The invention relates to a safety device (1), in particular for a cylinder for holding gaseous fluids under pressure for a self-propulsion gas system, comprising a device body (2 3), in which a passage (8, 40) is defined for a fluid, said passage extending from an entry aperture (6), suitable for being placed in fluidic communication with said cylinder, to an exit aperture (7). An obturator (10) airtightly engages said passage, said obturator being movable from a first position, in which it indicates the presence of fluid at a pressure below a first predefined pressure threshold value, inside said cylinder, and a second position, in which it indicates the presence of fluid at a pressure above said first predefined pressure threshold value inside said cylinder. At least one temperature and/or pressure- sensitive relief device (12) is positioned in said obturator in such a way that, upon exceeding a predefined temperature threshold or upon exceeding a second predefined pressure threshold, said relief device opens the passage for the fluid and permits the flow of fluid from said entry aperture towards said exit aperture.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 17/16 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side with fracturing member with fracturing diaphragm
F16K 17/40 - Safety valvesEqualising valves with fracturing member, e.g. fracturing diaphragm, fusible joint
A gas filtering device for a self-propulsion gas system, comprises a gas inlet duct, a gas outlet duct, a first passive-technology filtering element, for example a microfibre cartridge, and a second, active-technology filtering element, such as activated carbon, fluidically connected in series to said passive-technology filtering element along a gas path between said inlet duct and said outlet duct.
The present invention relates to a thermal safety device (100) comprising a device body (1) which comprises an inlet duct (12) and at least one outlet hole (9) in communication with the atmosphere, a shut-off device mounted in the device body and movable between a closed position and an open position, in which it allows the fluid flow from the inlet duct (12) to the outlet hole (9), and a retaining element operatively associated to the shut-off device to keep it in the closed position. The retaining element comprises a casing 21) containing a heat sensitive substance (6) suitable to expand upon reaching a first predetermined temperature to lead to the breakage of said casing (21) and allow the displacement of the valve to the open position. A yielding support element (8) is also provided for supporting said casing (21)and protecting said casing (21) until the temperature reached by said support element is lower than a second predetermined temperature higher than the first. The support element (8) consists of a material suitable for yielding upon reaching the second predetermined temperature to allow the displacement of the shut-off device to the open position.
F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
4.
FLUID FLOW REGULATING DEVICE, PARTICULARLY FOR AUTOMOTIVE GAS SYSTEMS, HAVING HIGH RESISTANCE TO CORROSION
The device (10) comprises a body (12) made of a first material, for example aluminium, and a component (14) coupled to the body (12) and made of a second material different from the first. The device (10) further comprises, between the body (12) and the component (14), a spacer element (32) of annular shape arranged around the component (14) so as to be in contact on the one hand against the body (12) and on the other against an abutment surface (24) of such component ( 14 ), preventing the direct contact between the latter and the body (12). The spacer element (32) is made of a third material having an electric potential value between the first two. Preferably, the first material is aluminium and the second material is stainless steel, in which case the third material may be for example brass or copper.
A coupling device comprises a body in which a passageway is formed which extends from an end aperture of such body to receive a pipe. A collar is positioned partially within the passageway to allow axial translation and has an annular flange outside the end aperture and flexible arms which extend in the passageway. The coupling device further comprises a safety mechanism having a cylindrical portion capable of being fitted on the portion of pipe straddling the end aperture so as to position the cylindrical portion between the pipe and the collar. The safety mechanism also has a safety fork connected to the cylindrical portion and which accommodates positioning of the collar between the body and the annular flange of the collar to inhibit axial movement of the collar towards the body of the device.
F16L 21/06 - Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe ends
F16L 37/133 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members using flexible hooks
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
An injection rail for automotive systems with engine fuelled by a gas engine, especially dual-fuelled diesel-natural gas systems, comprising a main body including a gas inlet duct, a mixing chamber and a plurality of gas outlet nozzles communicating with said mixing chamber and suitable for being connected to the engine. A plurality of gas interception injectors are associated with said inlet duct. Each injector has an inlet passage communicating with said gas inlet duct and an outlet passage leading into said mixing chamber.
The present invention relates to a relief device for a pressurised gas tank, in particular for gas cylinders for self -propulsion comprising a device bod (14) y which defines an inner chamber (10) in fluidic communication with said gas tank through an entry duct (9) and with the atmosphere through at least one exit hole (6), a shut-off device (7) is housed at least partially in said inner chamber and movable between a closed position, and an open position of the entry duct, and retaining devices associated with said shut-off device movable between an active position blocking the shut-off device in the closed position, and an inactive position releasing said shut-off device. At least one solid, heat - sensitive element (13) interacts with said retaining devices to keep them normally in said active blocking position. Said element is suitable to melt at a predefined temperature to enable the shifting of the retaining devices into said inactive release position. Moreover, said heat - sensitive element is housed in a respective seat (32) made in the stem (24) of a retaining screw (16) screwed into a threaded hole (50) made in a wall of the device body defining the inner chamber.
F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
Relief device, in particular for self -propulsion gas systems, comprising a device body ( 14, 18 ) in which a passage for a fluid towards an aeration duct coming out into the atmosphere, is defined. A shut-off device ( 8 ) is housed in said body and comprises an obturator element ( 9 ). Said shut-off device is movable between a closed position wherein said obturator element closes the passage stopping the flow of fluid and an open position allowing the flow of fluid towards the atmosphere, in response to a pressure difference. A heat - sensitive element ( 5 ) is positioned in the body of the device so that, below a predefined temperature threshold, it engages said shut-off device to keep it in the closed position and, above said predefined temperature, it allows the movement of said device from said closed position to the open position.
F16K 17/38 - Safety valvesEqualising valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
A coupling device comprises a device body (10) in which a hole (12) is made which extends from an end aperture (14) of such body to receive a pipe, a collar (16) positioned partially inside said hole with the possibility of axial translation and having an annular flange (18) outside said end aperture and flexible arms (20) which extend in said hole. The coupling device further comprises a safety device (40) comprising a cylindrical portion suitable to be fitted on the portion of pipe straddling the end aperture so as to position itself between the pipe and the collar and a safety fork (44) connected to said cylindrical portion and suitable to embrace the collar positioning itself between the device body and the annular flange of said collar to prevent axial shifting of the collar towards the device body.
F16L 37/133 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members using flexible hooks
F16L 37/14 - Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
10.
VAPORIZER AND PRESSURE REDUCER DEVICE IN SELF - PROPULSION GAS SYSTEMS
A gasifier/pressure reducer device in self-propulsion systems with gas-fuelled motor, particularly LPG, comprises a main body, in which an entrance passage of a fluid communicating with a tank of fluid under pressure and an exit passage of gas at the required pressure, connected to a utility, shut-off devices of the fluid associated with the entrance passage, a gasifier circuit made in a first portion of said body and comprising a heat exchanger able to transform, in a gasification duct, the fluid entering into a gaseous state suitable to fuel the engine, and a regulator stage of the pressure of the gas supplied housed in a second portion of the main body, downstream of the gasification circuit, are made. The regulator stage comprises a piston pressure regulator. An obturator body of a valve seat placed between the gasification duct and the exit passage of the gas is operatively connected to the piston in such a way that said obturator body opens or closes said valve seat depending on the pressure value of the gas present in the exit duct and acting on the piston.
This invention concerns an injection bar for dosing fuel to each individual internal combustion engine cylinder powered by both LPG or methane gas, under the control of an electronic controller. It is characterised by the fact that it comprises at least a heating means for its thermoregulation and to heat the gaseous internal residue before the engine starts.
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