A system for preventing and/or extinguishing a fire in an enclosed target area in a vehicle. The system having a central compressed air source for supplying compressed air to a load circuit. A supply of compressed air is provided in a compressed air buffer tank is supplied to a gas separation device from the compressed air buffer tank. A nitrogen-enriched gas mixture is provided at an outlet of the gas separation device, and introduced into the target area. An inlet of the compressed air buffer tank is at least temporarily fluidically connected to an outlet of a central compressed air source, wherein compressed air can be supplied to the compressed air buffer tank. A fluidic connection is provided between the central compressed air source and the compressed air buffer tank if a load circuit is not drawing any compressed air from the central compressed air source.
The present invention relates to an oxygen reduction plant (100) which has at least one gas separation system (102) and a compressed gas store (105; 105a to 105f). The compressed gas store (105; 105a-f) is or can be fluidically connected, via a line system, to at least one enclosed region (107; 107a, 107b) in order to supply to the enclosed region (107; 107a, 107b), as required, the gas mixture or inert gas contained in the compressed gas store (105; 105a-f). The outlet of the gas separation system (102) is or can be fluidically connected, as desired, to an inlet of the compressed gas store (105; 105a-f) or to the at least one enclosed region (107; 107a, 107b) in order to supply, as required, the gas mixture provided at the outlet of the gas separation system (102) either to the compressed gas store (105; 105a-f) or to the at least one enclosed region (107; 107a, 107b).
The invention relates to a plant for reducing the oxygen content in the atmosphere of an enclosed space and/or for maintaining a reduced oxygen content in the atmosphere of an enclosed space, below a preset operating concentration that is reduced in comparison to the oxygen concentration in normal ambient air. To that end, the plant has a gas separation system whose outlet is fluidically connected to the enclosed space for the continuous supply of an oxygen-reduced gas mixture or oxygen-displacing gas. The gas separation system is configured such that, during continuous operation of the gas separation system, the oxygen concentration in the atmosphere of the enclosed space is always in a range between the preset operating concentration and a preset or settable lower limit concentration.
The invention relates to a method and a system for preventing and/or extinguishing a fire in an enclosed target area (101) in a vehicle, in particular in a track-bound vehicle (100), having a central compressed air source (102) for supplying compressed air to a load circuit (114) as required. In the method, a supply of compressed air is provided in a compressed air buffer tank (130), and compressed air is supplied to a gas separation device (140) from the compressed air buffer tank (130). A nitrogen-enriched gas mixture is provided at an outlet (140b) of the gas separation device (140), and the gas mixture is introduced into the target area (101) as required. In order to provide the supply of compressed air, an inlet (130a) of the compressed air buffer tank (130) is at least temporarily fluidically connected to an outlet (102a) of a central compressed air source (102) such that compressed air can be supplied to the compressed air buffer tank (130). A fluidic connection is provided between the central compressed air source (102) and the compressed air buffer tank (130) if a load circuit (114) is not drawing any compressed air from the central compressed air source (102).
System for oxygen reduction in a target space (2), in particular for the purpose of fighting fire or preventing fire, wherein the system has an enclosed buffer space (1) which is or can be connected to the target space (2) in terms of flow for introducing, as required, at least one part of the ambient air of the buffer space (1) into the target space (2). The system further comprises an oxygen reduction system (5) associated with the buffer space (1) for setting and maintaining an oxygen content, reduced in comparison to the normal earth atmosphere, in the ambient atmosphere of the buffer space (1), such that the oxygen content in the ambient atmosphere of the buffer space (1) is lower than the oxygen content in the ambient atmosphere of the target space (2). The system, furthermore, comprises a device (3) for introducing ambient air from the buffer space (1) into the target space (2) as required.
The invention relates to a gas extinguishing system (1) for a specified protection region (14), in particular a small parts warehouse, wherein the gas extinguishing system (1) has an inert gas source (2) and a diffuser system (4) which is flow-connected to the inert gas source (2) via a pipeline system (3). According to the invention, the diffuser system (4) has a diffuser pipe (7) having a plurality of bores (13) in the shell surface of the diffuser pipe (7) and a pressure reducer (8) allocated to the diffuser pipe (7). In order to achieve an absence of reaction in respect of the diffuser system (4) from the design view of the gas extinguishing system (1), according to the invention the diffuser system (4) is designed such that, during the flood time designed in respect of the protection region (14), an aperture pre-pressure measured absolutely in bar is at least twice as high as the interior pressure of the diffuser pipe (7), and that, during the designed flood time, the interior pressure of the diffuser pipe (7) equals 2 bar absolute at maximum.
The invention relates to a device (100) for providing a crossover point between a first region (1) and a second region (2) hermetically delimited from the first region (1) by means of a wall (10), wherein the device comprises: - a lock chamber (12), which can be inserted into an opening (11) provided in the wall and which has a first opening (13) forming a crossover point between the first region and the lock chamber and which has a second opening (14) forming a crossover point between the second region and the lock chamber; - at least one peripherally circulating element (15), which has at least one passage opening (15.1; 19.1; 15.2; 19.2) and can be moved in relation to the first and the second opening of the lock chamber so that at least a first state, in which the at least one passage opening is substantially aligned with the first opening of the lock chamber and enables access from the first region into the lock chamber and the peripherally circulating element covers the second opening of the lock chamber substantially completely, and a second state, in which the at least one passage opening is substantially aligned with the second opening of the lock chamber and enables access from the second region into the lock chamber and the peripherally circulating element covers the first opening of the lock chamber substantially completely, can be selectively effected.
The invention relates to an arrangement (100) for attenuating impinging light of a beam with finite expansion. The solution according to the invention aims to achieve reliable attenuation of, in particular, directly impinging light and suggests that the arrangement comprises: a light source (10) for producing a beam of unpolarised light, preferably unpolarised monochromatic light; a useful light region (50) through which said unpolarised light passes, preferably passing through in a straight line proceeding from the light source (10); as well as an absorption device (30) that is arranged downstream of said useful light region (50) and preferably downstream in the direct beam radiation direction, for the purpose of at least partially absorbing impinging light, said absorption device (30) comprising at least one polarisation device (31, 32) that is arranged in the direction of the light beam.
The invention relates to an inerting method as well as an inerting system (1) to set and/or maintain a reduced oxygen content in an enclosed room (2), wherein a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) is provided which separates off at least a portion of the oxygen from an initial gas mixture provided in a mixing chamber (6) and by so doing, provides a nitrogen-enriched gas mixture. In order to optimize the operation of the inerting system (1), the invention provides for a portion of the air to be withdrawn from the enclosed room (2) and admixed with fresh air in the mixing chamber (6).
A62C 3/00 - Fire prevention, containment or extinguishing specially adapted for particular objects or places
A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
A62C 99/00 - Subject matter not provided for in other groups of this subclass
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
10.
OXYGEN-REDUCING INSTALLATION AND METHOD FOR OPERATING AN OXYGEN-REDUCING INSTALLATION
The invention relates to an oxygen-reducing installation and to a method for operating an oxygen-reducing installation (1). The oxygen-reducing installation (1) has an inert-gas source (2, 3) and a line system (7; 7.1, 7.2, 7.3, 7.4), which is or can be connected to the inert-gas source (2, 3) and to at least one surrounded region (20.1, 20.2) with regard to flow in order to feed gas provided by the inert-gas source (2, 3) to the at least one surrounded region (20.1, 20.2) as needed. According to the invention, a tightness test of at least one region of the line system (7.1, 7.2, 7.3, 7.4) is performed by performing a pressure test of the line region to be tested with regard to tightness by means of at least part of the gas mixture or gas provided by the inert-gas source (2, 3).
A62C 99/00 - Subject matter not provided for in other groups of this subclass
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
11.
BUS SYSTEM, AND METHOD FOR OPERATING SUCH A BUS SYSTEM
The invention relates to a bus system (1) that has a control unit (2) and at least one bus subscriber (3.1, 3.2, 3.3). The control unit (2) has at least two associated data communication interfaces (2.1, 2.2) that are each designed to send and receive data. The at least one bus subscriber (3.1, 3.2, 3.3) has a bus coupler having at least two data communication interfaces (3.11, 3.12; 3.21, 3.22; 3.31, 3.32) that are each designed to send and receive data. The control unit (2) and the at least one bus subscriber (3.1, 3.2, 3.3) are connected to one another via their respective data communication interfaces and corresponding two-point connections (8) to form a ring topology. The bus coupler of the at least one bus subscriber is designed to send and hence forward data that are received on one of its at least two data communication interfaces via its other data communication interface directly and without delay.
H04L 12/423 - Loop networks with centralised control, e.g. polling
H04L 12/437 - Ring fault isolation or reconfiguration
G08B 25/04 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
G08B 29/06 - Monitoring of the line circuits, e.g. signalling of line faults
G08B 17/00 - Fire alarmsAlarms responsive to explosion
The invention relates to an inertization system and an inertization method for oxygen reduction, in which method a specifiable and, in comparison to normal environmental air, reduced oxygen content is adjusted and maintained in the chamber atmosphere of an enclosed chamber (2). To this end, the inertization system (1) has a compressor system (3) for compressing an initial gas mixture and a gas separation system (10) connected to the compressor system (3). In the gas separation system (10), at least some of the oxygen contained in the compressed initial gas mixture is separated. The gas separation system (10) is designed to be operated in a VPSA mode or in a PSA mode as desired.
The invention relates to a method for determining and/or monitoring the airtightness of an enclosed room (2) which is equipped with an oxygen reducing system (1) and in the atmosphere of which at least one oxygen content that can preferably be determined in advance and is reduced in comparison to the normal surrounding air can be set and maintained in order to prevent and/or extinguish fires by introducing an oxygen-displacing gas. The oxygen reducing system (1) has a compressor system (4; 4.1, 4.2) for compressing an initial gas mixture and a gas separation system (3; 3.1, 3.2) downstream of the compressor system (4; 4.1, 4.2) for separating at least one part of the oxygen contained in the initial gas mixture and for providing a nitrogen-enriched gas which is supplied to the enclosed room (2). The differential pressure set in the room (2) is ascertained and compared to a corresponding reference value, whereby information regarding the airtightness of the room (2) is provided.
A62C 99/00 - Subject matter not provided for in other groups of this subclass
G01M 3/26 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
14.
DEVICE AND METHOD FOR DETECTING SCATTERED LIGHT SIGNALS
A device and method for detecting scattered light signals is specified. A light source (10) shines light onto a scattered light zone (15), in which particles can be found. With the aim of reducing costs and improving detection accuracy, the device (100) has a plurality of optical sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) for detecting scattered light and an analyser device for analysing the signals detected by the optical sensors, wherein the sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) are each arranged at a sensor angle (W1, W2, W3, W4, W5, W6, W7, W8, W9, W10) relative to an incident axis (11) of the incident light to detect scattered light from the scattered light zone, wherein one of the plurality of optical sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) is a reference sensor, and wherein the analyser device is designed to relate waveforms from the remaining optical sensors to the waveform of the reference sensor, wherein the waveforms of the optical sensors (21, 22, 23, 24, 25, 26, 27, 28, 29, 30) are used to classify any particles found in the scattered light zone (15).
The invention refers to a system and a method for extinguishing a fire in an enclosed space (6), wherein the enclosed space (6) is flooded with extinguishing gas at least until an extinguishing gas concentration (a) suitable for having an extinguishing effect is reached in the flooding zone. In order to make it possible that a maximum extinguishing gas concentration (b) can be realized as quickly as possible without harming persons by flooding the room (6), according to the invention the flooding of the enclosed space (6) is divided into a pre-flooding phase and a subsequent main flooding phase. The pre-flooding phase is equal to a time span between the point in time (t1) when the initial alarm is sounded to warn persons of impending danger and a predetermined point in time (t2). The main flooding phase is equal to a time span between the predetermined point in time (t2) and the point in time (t4) when a maximum extinguishing gas concentration (b) is reached. The enclosed space (6) is flooded such that during the entire pre-flooding phase, the extinguishing gas concentration (b) in the enclosed space (6) does not exceed a predetermined or predeterminable value that is below the critical NOAEL (no-observed-adverse-effect-level) value.
The invention relates to an inerting method as well as an inerting system (1) to set and/or maintain a reduced oxygen content in an enclosed room (2), wherein a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) is provided which separates off at least a portion of the oxygen from an initial gas mixture provided in a mixing chamber (6) and by so doing, provides a nitrogen-enriched gas mixture. In order to optimize the operation of the inerting system (1), the invention provides for a portion of the air to be withdrawn from the enclosed room (2) and admixed with fresh air in the mixing chamber (6).
A62C 3/16 - Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
A62C 37/44 - Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
The invention relates to an inerting method as well as an inerting system (1) to set and/or maintain a reduced oxygen content in an enclosed room (2), wherein a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) is provided which separates off at least a portion of the oxygen from an initial gas mixture provided in a
mixing chamber (6) and by so doing, provides a nitrogen-enriched gas mixture. In order to optimize the operation of the inerting system (1), the invention provides for a portion of the air to be withdrawn from the enclosed room (2) and admixed with fresh air in the mixing chamber (6).
The invention relates to an inerting method and an inerting installation (1) for setting and/or maintaining a reduced oxygen content in an enclosed space (2), wherein a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) is provided and is used to separate at least part of the oxygen from an initial gas mixture provided in a mixing chamber (6) and thereby provide a gas mixture enriched with nitrogen. In order to optimize the operation of the inerting installation (1), it is provided according to the invention that part of the air in the enclosed space (2) is removed from it and mixed with fresh air in the mixing chamber (6).
The present invention relates to a measure for minimizing an undesired passage of fluid from a first sector (1) to a second sector (2) separated by a non-fluid-tight separation (3), wherein a first pressure (P1-1) prevails in the first sector (1) and a lower second pressure (P2-1) than the first pressure (P1-1) prevails in the second sector (2). An intermediate chamber (4) which separates the two sectors (1, 2) from one another is arranged at the separation (3). A conveyor mechanism (5) is further provided which is designed to convey fluid from the intermediate chamber (4) to the first sector (1) in order to generate a lower pressure in the intermediate chamber (4) than the first pressure (P1-1) prevailing in the first sector (1), wherein the pressure (P4-1) generated in the intermediate chamber (4) is just as high or higher than the second pressure (P2-1) prevailing in the second sector (2).
The invention relates to an inerting method and to an inerting system (1) for fire protection and/or fire extinguishing, wherein for the purposes of adjusting and/or maintaining a predefinable oxygen content, which is reduced in comparison to normal ambient air, in the room atmosphere of an enclosed room (2) a gas separation system (3, 4) is provided for separating at least a portion of the oxygen from an initial gas mixture containing nitrogen and oxygen, thereby producing a gas mixture enriched with nitrogen at the outlet (4a) of the gas separation system (3, 4). In order to achieve the adjusting and maintaining of a predefined inerting level with as little energy expenditure as possible, according to the invention a control unit (5) is provided, which is adapted to control the gas separation system (3, 4) in such a way that the oxygen residual content of the gas mixture enriched with nitrogen is changed as a function of the oxygen content currently in effect in the room atmosphere of the enclosed room (10).
The invention relates to an inert gas fire extinguisher (100) for reducing the risk and for extinguishing fires in a protected space (10, 10-1, 10-2). In order to ensure that the protected space (10, 10-1, 10-2) can be inerted according to different adjustable event sequences, the inert gas fire extinguisher (100) comprises a pressure reducing device (6) with at least two parallel branches (21, 31, 41), wherein each parallel branch (21, 31, 41) comprises a pressure reducing device (22, 32, 42). Each parallel branch (21, 31, 41) can be connected to a high pressure collecting line (3) and to a low-pressure extinguishing line (4, 4-1, 4-2) by way of a controllable valve (23, 33, 43), wherein each pressure reducing device (22, 32, 42) is adapted to reduce a high input pressure to a low output pressure according to a known pressure reducing characteristic.
The invention relates to a system for reducing the risk of fire and extinguishing fires in a closed room and a method for operating such a system comprising a rotating heat exchanger system (20) and a device (1) for adjusting a leakage rate of a leak (S, S1, S2) at a gap-like opening, wherein the device (1) comprises a sealing member (2) having at least one chamber (3, 3a, 3b) and a line system (9) connected to the at least one chamber (3, 3a, 3b), a fluid being fed to the chamber (3, 3a, 3b) by the line system in a controlled fashion. According to the invention, the sealing member (2) is formed at least in part from a flexible material and the cross section of the sealing member can expand in the direction of the leak (S, S1, S2) when fluid is fed to the at least one chamber (3, 3a, 3b). Also, the system comprises an apparatus for providing an oxygen-displacing gas. The design-dependent gap spaces (S1, S2) at the rotor (21) of the rotating heat exchanger system (20) can be at least partially sealed off in a controlled fashion using the device (1) according to the invention.
The invention relates to a system for reducing the risk of fire and extinguishing fires in a closed room and a method for operating such a system comprising a rotating heat exchanger system (20) and a device (1) for adjusting a leakage rate of a leak (S, S1, S2) at a gap-like opening, wherein the device (1) comprises a sealing member (2) having at least one chamber (3, 3a, 3b) and a line system (9) connected to the at least one chamber (3, 3a, 3b), a fluid being fed to the chamber (3, 3a, 3b) by the line system in a controlled fashion. According to the invention, the sealing member (2) is formed at least in part from a flexible material and the cross section of the sealing member can expand in the direction of the leak (S, S1, S2) when fluid is fed to the at least one chamber (3, 3a, 3b). Also, the system comprises an apparatus for providing an oxygen-displacing gas. The design-dependent gap spaces (S1, S2) at the rotor (21) of the rotating heat exchanger system (20) can be at least partially sealed off in a controlled fashion using the device (1) according to the invention.
24.
Device for minimizing an undesired passage of fluid from a first sector to a second sector as well as a heat exchanger system comprising such a device
The present invention relates to a measure for minimizing an undesired passage of fluid from a first sector (1) to a second sector (2) separated by a non-fluid-tight separation (3), wherein a first pressure (P1-1) prevails in the first sector (1) and a lower second pressure (P2-1) than the first pressure (P1-1) prevails in the second sector (2). An intermediate chamber (4) which separates the two sectors (1, 2) from one another is arranged at the separation (3).
A conveyor mechanism (5) is further provided which is designed to convey fluid from the intermediate chamber (4) to the first sector (1).
F28D 17/00 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
F24D 5/10 - Hot-air central heating systemsExhaust-gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through heat-exchange ducts in the walls, floor, or ceiling
F24D 3/16 - Tube and panel arrangements for ceiling, wall, or underfloor heating mounted on, or adjacent to, a ceiling, wall or floor
The invention relates to a measure for minimising an undesired fluid overflow from a first sector (1) to a second sector (2) that are separated by a non-fluid tight partition (3), a first pressure (P1-1) prevailing in the first sector (1) and a second pressure (P2-1) that is lower than the first pressure (P1-1) prevailing in the second sector (2). An intermediate chamber (4) is located next to the partition (3), said chamber separating the two sectors (1, 2). A delivery unit (5) is designed to deliver fluid from the intermediate chamber (4) to the first sector (1) in order to produce a negative pressure in the intermediate chamber (4) in relation to the first pressure (P1-1) that prevails in the first sector (1), the pressure (P4-1) produced in the intermediate chamber (4) being equal to or greater than the second pressure (P2-1) prevailing in the second sector (2).
F28D 19/04 - Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
The present invention relates to an inerting method for extinguishing a fire in a closed room in which the oxygen content in the closed room is reduced to a specific inerting level within a given time (x), as well as a device for carrying out the method. In order to achieve the most exacting design possible to the inert gas fire-extinguishing system used during the inerting method, and in particular the most precise dimensioning possible to the inert gas to be provided, while simultaneously adhering to the required fire-fighting stage and re-ignition prevention stage necessary when extinguishing fires, the invention provides for the inerting level to be kept to the re-ignition prevention level within a given regulation range.
The invention relates to a method and a device for fire-prevention and for extinguishing a fire in an enclosed area (10), in particular a laboratory area, in which a permanent negative pressure has been established, wherein the atmosphere of said area is supplied with fresh air in a controlled manner as incoming air and waste air is evacuated from the atmosphere of said area in a controlled manner and wherein in the event of fire or to prevent a fire, an extinguishing agent, which is gaseous under normal conditions, is fed into the atmosphere of the area as incoming air. The aim of the invention is to ensure pressure relief even when the area (10) is rapidly flooded with the gaseous extinguishing agent, without altering the established negative pressure. To achieve this, the volumetric flow of the incoming air that is fed in total to the atmosphere of the area as fresh air and/or as extinguishing agent is less than or equal to the volumetric flow of the waste air evacuated from the atmosphere of the area.
The invention relates to an inertization method for reducing the risk of fire in an enclosed area (10) and to a device for carrying out said method. The aim of the invention is to provide an inertization system for an enclosed area (10), by means of which an effective reduction of the risk of fire can be obtained as a result of a permanent inertization of the protection area (10) and by means of which said preventive fire-protection achieved by the permanent inertization can be restricted, if necessary, to spatially separate zones of the enclosed area, without requiring structural partitions. To achieve this, at least one inert gas, the gas density (ρGas) of which differs from the mean gas density (ρGas) of the ambient air atmosphere of the area (10) is introduced into the enclosed area (10) in such a way that in said area (10) gas layering of the first gas layer (A) and a second gas layer (B) occurs, the oxygen content of the first gas layer (A) corresponding substantially to the oxygen content of the ambient air atmosphere and the oxygen content of the second gas layer (B) corresponding to a specific establishable oxygen content that is reduced in relation to the oxygen content of the ambient air atmosphere.
The invention relates to a method and device for fire prevention and/or fire extinguishing in enclosed spaces (10), the ambient atmosphere of which is not permitted to exceed a prescribed temperature value. In order to ensure that the cooling capacity provided by an air conditioning system does not need to be increased, even if inert gas is continuously or regularly added to the ambient atmosphere in order to adjust or maintain a certain inertization level, the invention proposes a system for the controlled introduction of inert gas into the ambient atmosphere of the enclosed space (10). The system comprises a tank (1) for providing and storing the inert gas in liquefied form and an evaporator (16) connected to the tank (1) for evaporating at least a part of the inert gas provided in the tank (1) and for introducing the vaporized inert gas into the ambient atmosphere of the enclosed space (10). The evaporator (16) is designed to take the heat energy required for evaporating the liquid inert gas directly or indirectly from the ambient atmosphere of the enclosed space (10).
The invention relates to a preventing and extinguishing fires in enclosed spaces in which the internal air atmosphere is not permitted to exceed a predefined temperature value. In order not to have to increase the cooling capacity of an air conditioning system when inert gas is added to the internal air atmosphere to set or maintain a specific inertization level within an enclosed space, a system for the regulated discharging of inert gas into same is provided. The system includes a container for the provision and storage of the inert gas in liquified form, and a vaporizer connected to the container for vaporizing at least a portion of the inert gas and discharging same into the internal air atmosphere of the enclosed space. The vaporizer thereby directly or indirectly extracts the heat energy needed to vaporize the liquid inert gas from the internal air atmosphere of the enclosed space.
The invention relates to an inertization device for establishing and maintaining a presettable inertization level in a protective room. The inertization device has an inert gas system for providing inert gas, a supply pipe system connected to the inert gas system for supplying the inert gas to the protective room, and an inert gas system control unit for controlling the inert gas system. The rate the inert gas rate is provided determines a level of inertization inside the protective room. In order for the inert gas rate supplied to the protective room to be appropriately controlled, even in the event of a disruption in the control of the inert gas system or in the event of a failure of the inert gas system control unit, a safety device is provided.
The invention relates to an inertization device for establishing and maintaining an inertization level in a protective room. The inertization device has a controllable inert gas system for providing inert gas, a first supply pipe system connected to the inert gas system and the protective room to supply the inert gas to the protective room, and a control unit to control the inert gas system such that a presettable inertization level is established and maintained inside the protective room. In order to raise the inertization level inside the protective room rapidly to an accessibility level without requiring major structural measures, a valve controlled by the control unit is connected to the inert gas system and the first supply pipe system to supply the exhaust air prepared by the inert gas system as fresh air to the protective room.
A method and apparatus for the controlled feeding of added air into a permanently inertized room in which a predefined inertization level is or must be set and maintained within a certain control range provide for the volume flow rate at which an inert gas is fed into the room atmosphere to attain a value that is adequate for maintaining the predefined inertization level in the room atmosphere that will minimize fire risk. In addition, provisions are made whereby at all times just enough fresh air is injected into the room atmosphere as is necessary to remove from the room atmosphere that proportional concentration of hazardous substances that has not already been removed, via a corresponding return-air exhaust system as a result of the injection of inert gas.
The invention relates to a device and a method for the regulated supply of incoming air into a permanently inert area (10) in which a pre-defined inerting level is adjusted or to be adjusted and maintained in a certain regulating range. The aim of the invention is to be able to maintain the prescribed air regeneration rate for the permanently inert area (10), and to permanently effectively eliminate the risk of fire in the area (10), in the most effective and economical way possible. To this end, a value is associated with the volume flow rate (VN2) at which an inert gas is supplied to the air atmosphere in the area, which is sufficient to maintain the prescribed inerting level in the air atmosphere of the space. Furthermore, only as much fresh air is supplied to the air atmosphere of the area as is directly required to remove the pollutant part from said air atmosphere, which has not already been eliminated by the supply of the inert gas via a corresponding outgoing air discharge system (4).
The invention relates to an inerting arrangement (1) for setting and maintaining predeterminable inerting levels in a protective space (2) to be monitored. The inerting arrangement (1) comprises for this purpose a controllable inert gas system (10, 11, 12) for supplying inert gas, a feed pipe system (20), which is connected to the inert gas system (10, 11, 12) and can be connected to the protective space (2), in order to feed the inert gas supplied by the inert gas system (10, 11, 12) to the protective space (2), and an inert gas system control unit (30) which is designed to control the inert gas system (10, 11, 12) in such a way that an inert gas rate supplied by the inert gas system (10, 11, 12) assumes a value which is suitable for setting and/or maintaining a first predeterminable inerting level in the protective space (2). In order to ensure, even when there is a disruption in the control of the inert gas system (10, 11, 12) or when there is a failure of the inert gas system control unit (30), that the inert gas rate fed to the protective space (2) can in principle be regulated correspondingly such that a second predeterminable inerting level is set and/or maintained in the protective space (2), a correspondingly designed safety device (40, 41, 42, 43) is provided according to the invention.
The invention relates to an inertisation device (1) for adjusting and maintaining predefinable inertisation levels in a protected area (2) that is to be monitored. Said inertisation device (1) comprises a controllable inert gas arrangement (10, 11) for providing inert gas, a first supply pipe system (20) which is connected to the inert gas arrangement (10, 11) and which can be connected to the protected area (2) in order to guide the inert gas provided by the inert gas arrangement (10, 11), and a control unit (12) which is used to control the inert gas arrangement (10, 11) in such a manner that a predefinable inertisation level is controlled and maintained in the protected area (2). The aim of the invention is to rapidly increase the inertisation level in the protected area (2) to an accessibility level without large structural modifications, for example, installing ventilation flaps in the protected area (2). According to the invention, a valve (31) that can be switched by the control unit (12) is connected to the inert gas arrangement (10, 11) and to the first supply pipe system (20), in order to, according to requirements, guide the exit air to the protected area (2), said exit air provided by the inert gas arrangement (10, 11) by the outlet (Hb) as fresh air.
The invention relates to a method that enables the air tightness of an enclosed space to be determined in the most precise manner and without increasing expenditure. Said space is particularly suitable for use in the above mentioned inert gas fire extinction system. The invention relates to, in particular, a method in which the actual air tightness of the enclosed space can be determined, if required, at any particular time in an effective but simple manner without having to acquire a series of expensive measurements. According to the invention, a concentration gradient between the room air atmosphere of an enclosed space and the ambient air atmosphere is initially controlled, and in which the concentration of at least one component of the room air atmosphere, in particular oxygen, is adjusted to a value that is different from the corresponding value of the concentration of at least one component in the ambient air atmosphere. Subsequently, a concentration variation rate is determined in which the temporal modification of the concentration of at least one component is detected in the room-air atmosphere. Subsequently, an airtightness value of the enclosed space is calculated by taking into account the determined concentration modification rate.
A62C 99/00 - Subject matter not provided for in other groups of this subclass
G01F 17/00 - Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
G01M 3/20 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
38.
MULTISTAGE INERTING METHOD FOR PREVENTING AND EXTINGUISHING FIRES IN ENCLOSED SPACES
The invention relates to an inerting method for reducing the risk of fires and for extinguishing fires in a protective space, wherein the oxygen content in the protective space is first reduced to a set base inerting level and then continuously maintained on said set base inerting level. The aim of the invention is to be able to eliminate or at least lessen the need of a pressure relief in the protective space for using the inerting method and simultaneously to achieve that, in the event of fire, fire fighting can be carried out by introducing additional inert gas into the protective chamber depending on the extent of the fire. To this end, it is proposed that, in the event of fire in the protective space, the oxygen content is further reduced from the base inerting level to a first reduced level, that the oxygen content is then continuously maintained at a first reduced level for a first predetermined period of time and that the oxygen content is subsequently further reduced from a first reduced level to a complete inerting level if the fire has not yet been extinguished after the first predetermined period of time.
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