An oil overflow assembly comprises a valve subassembly (110) and a control subassembly (130). The valve subassembly (110) is configured to be operably coupled to an oil side of a diaphragm head of a diaphragm compressor and includes a valve cone (112) configured to selectively seal a valve seat (114). The control subassembly (130) includes a diaphragm (138) and a diaphragm spring (146). The diaphragm (138) is operably coupled to the valve cone (112) and configured to move the valve cone (112) into and out of engagement from the valve seat (114). The diaphragm spring (146) engages with the diaphragm (138) and biases the diaphragm (138) into a sealed position where the diaphragm (138) maintains the valve cone (112) in engagement with the valve seat (114). The diaphragm spring (146) improves the response time of the oil overflow assembly and extends the lifetime of a diaphragm compressor to which the oil overflow assembly is connected.
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
F16K 31/126 - Operating meansReleasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
The present disclosure generally relates to a clamping arrangement for a valve assembly (e.g., a suction or discharge valve) of a reciprocating compressor. More specifically, the present disclosure describes a clamping arrangement for clamping a valve assembly to a cylinder. The clamping arrangement may include a valve assembly, a clamping mechanism and a plurality of fasteners for directly securing the valve assembly to a cylinder of the compressor. The clamping mechanism has no direct contact or interaction with a valve cover which seals a valve cage from the surrounding environment. As such, the need for a valve gland is negated. In use, the clamping mechanism may be in the form of a clamping ring or an integrated flange for securing the valve assembly directly to the cylinder by the plurality of fasteners. The clamping arrangement may further include an improved seal located between the valve assembly and the cylinder.
F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
F16K 7/02 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm
F04B 39/10 - Adaptation or arrangement of distribution members
F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids
3.
CLAMPING ARRANGEMENT FOR VALVES IN RECIPROCATING COMPRESSOR CYLINDERS
The present disclosure generally relates to a clamping arrangement for a valve assembly (e.g., a suction or discharge valve) of a reciprocating compressor. More specifically, the present disclosure describes a clamping arrangement for clamping a valve assembly to a cylinder. The clamping arrangement may include a valve assembly, a clamping mechanism and a plurality of fasteners for directly securing the valve assembly to a cylinder of the compressor. The clamping mechanism has no direct contact or interaction with a valve cover which seals a valve cage from the surrounding environment. As such, the need for a valve gland is negated. In use, the clamping mechanism may be in the form of a clamping ring or an integrated flange for securing the valve assembly directly to the cylinder by the plurality of fasteners. The clamping arrangement may further include an improved seal located between the valve assembly and the cylinder.
F04B 3/00 - Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
F04B 39/10 - Adaptation or arrangement of distribution members
A seal arrangement for use in a reciprocating piston compressor includes first and second seal rings engaged along respective side surfaces, and first and second cover rings disposed around the first and second seal rings such that the outside diameters of the first and second seal rings engage the inside diameters of the first and second cover rings, respectively. A support ring is engaged with the first seal ring and the first cover ring. A backup ring is engaged with the second seal ring and the second cover ring. In some embodiments, the first seal ring has a width that is smaller than a width of the second seal ring. In other embodiments the second seal ring has a circumferential groove formed on an inside surface thereof, the groove disposed directly adjacent the first seal ring. In further embodiments, the seal rings are formed of PEEK with a nano-material additive.
A connecting rod (24) has a modified end adapted to ensure that a lubricant film of sufficient thickness exists in an end bearing thereof when the connecting rod is placed in both tension and compression. The connecting rod includes an elongated body portion or shaft (40), a big end (42) defining a first coupling bore (44) at a first longitudinal end of the body portion (40), and a small end (46) defining a second coupling bore (48) at a second longitudinal end of the body portion (40). The small end (46) and the big end (42) each have a proximal side (50,52) nearest the shaft (40) and a distal side (54,56) furthest from the shaft (40). An opening (100) is formed in the shaft (40) adjacent the proximal side (52) for adjusting a stiffness of the proximal side (52).
F01B 9/00 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F16J 7/00 - Piston-rods, i.e. rods rigidly connected to the piston
F16C 7/02 - Constructions of connecting-rods with constant length
F04B 53/14 - Pistons, piston-rods or piston-rod connections
A seal arrangement for use in a reciprocating piston compressor includes first and second seal rings (44,46) engaged along respective side surfaces, and first and second cover rings (40,42) disposed around the first and second seal rings (44,46) such that the outside diameters (OD5,OD6) of the first and second seal rings (44,46) engage the inside diameters (ID3,ID4) of the first and second cover rings (40,42), respectively. A support ring (36) is engaged with the first seal ring (44) and the first cover ring (40). A backup ring (38) is engaged with the second seal ring (46) and the second cover ring (42). In some embodiments, the first seal ring (44) has a width (W5) that is smaller than a width (W6) of the second seal ring (46). In other embodiments the second seal ring (146) has a circumferential groove (149) formed on an inside surface thereof, the groove (149) disposed directly adjacent the first seal ring (144). In further embodiments, the seal rings (44,46) are formed of PEEK with a nano-material additive.
A horizontal piston compressor is disclosed, including a frame with a cylinder, and a piston reciprocably received in the cylinder. The has piston h an inner chamber and first and second end walls. The piston and the cylinder form a compression chamber for compressing the gas. A valve and an orifice are disposed in the first end wall, and are configured to supply gas from the compression chamber to the inner chamber during a compression stroke of the piston. A gas bearing supports the piston relative to the frame. The gas bearing includes an opening for supplying gas from the inner chamber to a space between the piston and the cylinder such that the gas supplied to the space exerts an upward pressure on the piston. The valve may be a spring-loaded valve, and the orifice may be an orifice insert positioned between the valve and the compression chamber.
A connecting rod (24) has a modified end adapted to ensure that a lubricant film of sufficient thickness exists in an end bearing thereof when the connecting rod is placed in both tension and compression. The connecting rod includes an elongated body portion or shaft (40), a big end (42) defining a first coupling bore (44) at a first longitudinal end of the body portion (40), and a small end (46) defining a second coupling bore (48) at a second longitudinal end of the body portion (40). The small end (46) and the big end (42) each have a proximal side (50,52) nearest the shaft (40) and a distal side (54,56) furthest from the shaft (40). An opening (100) is formed in the shaft (40) adjacent the proximal side (52) for adjusting a stiffness of the proximal side (52).
F16J 7/00 - Piston-rods, i.e. rods rigidly connected to the piston
F16C 7/02 - Constructions of connecting-rods with constant length
F15B 15/02 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
A seal arrangement for use in a reciprocating piston compressor includes first and second seal rings (44,46) engaged along respective side surfaces, and first and second cover rings (40,42) disposed around the first and second seal rings (44,46) such that the outside diameters (OD5,OD6) of the first and second seal rings (44,46) engage the inside diameters (ID3,ID4) of the first and second cover rings (40,42), respectively. A support ring (36) is engaged with the first seal ring (44) and the first cover ring (40). A backup ring (38) is engaged with the second seal ring (46) and the second cover ring (42). In some embodiments, the first seal ring (44) has a width (W5) that is smaller than a width (W6) of the second seal ring (46). In other embodiments the second seal ring (146) has a circumferential groove (149) formed on an inside surface thereof, the groove (149) disposed directly adjacent the first seal ring (144). In further embodiments, the seal rings (44,46) are formed of PEEK with a nano-material additive.
A horizontal piston compressor is disclosed, including a frame with a cylinder, and a piston reciprocably received in the cylinder. The piston has an inner chamber and first and second end walls. The piston and the cylinder form a compression chamber for compressing the gas. A valve and an orifice are disposed in the first end wall, and are configured to supply gas from the compression chamber to the inner chamber during a compression stroke of the piston. A gas bearing supports the piston relative to the frame. The gas bearing includes an opening for supplying gas from the inner chamber to a space between the piston and the cylinder such that the gas supplied to the space exerts an upward pressure on the piston. The valve may be a spring-loaded valve, and the orifice may be an orifice insert positioned between the valve and the compression chamber.
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F04B 53/12 - ValvesArrangement of valves arranged in or on pistons
The invention pertains to a horizontal piston compressor, which is provided with a piston rod external surface cooling system for cooling the piston rod external surface with a cooling liquid, which cooling system comprises: - a piston rod cooling unit (60;200), that is arranged adjacent the side of the set of one or more packing rings (51) remote from the first compression chamber, - a cooling liquid source (61) that is adapted to provide a flow of cooling liquid to the cooling unit; wherein the piston rod cooling unit comprises: -a housing (70;210), -a ring member (75;205) having a bore (76;206) through which the piston rod (30) extends, the diameter of said bore being larger than the diameter of the piston rod, such that an annular space (77;207) is present between the piston rod and the ring member, -a cooling liquid supply channel (80,85;220), which extends from an inlet (81;221) thereof to one or more supply ports (86;226) in communication with the bore (76;206) so as to pass the cooling liquid to the annular space (77;207) between the ring member and the piston rod, thereby allowing to establish a flow of cooling liquid in contact with the external surface of the piston rod (30) and through said annular space causing the removal of heat from the external surface of the piston rod, wherein the ring member (75;205) is movably supported relative to the housing (70;210) such as to allow for motions of the ring member (75;205) in radial directions that follow and/or compensate for piston rod motions and deflections in radial directions in order to maintain the annular space.
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
Goods & Services
Measuring, controlling and regulating apparatus; rider ring wear monitoring apparatus. Maintenance, repair, re-conditioning and installation of engines, rider ring wear monitoring apparatus, compressors, pumps and measuring, controlling and regulating apparatus.
A horizontal piston compressor is disclosed, including a frame with a cylinder, and a piston reciprocably received in the cylinder. The piston has an inner chamber and first and second end walls. The piston and the cylinder form a compression chamber for compressing the gas. A valve and an orifice are disposed in the first end wall, and are configured to supply gas from the compression chamber to the inner chamber during a compression stroke of the piston. A gas bearing supports the piston relative to the frame. The gas bearing includes an opening for supplying gas from the inner chamber to a space between the piston and the cylinder such that the gas supplied to the space exerts an upward pressure on the piston. The valve may be a spring-loaded valve, and the orifice may be an orifice insert positioned between the valve and the compression chamber.
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F04B 53/12 - ValvesArrangement of valves arranged in or on pistons
A seal arrangement for use in a reciprocating piston compressor Includes first and second seal rings (44,46) engaged along respective side surfaces, and first and second cover rings (40,42) disposed around the first and second seal rings (44,46) such that the outside diameters (0D5,0D6) of the first and second seal rings (44,46) engage the inside diameters (ID3,ID4) of the first and second cover rings (40,42), respectively A support rmg (36) is engaged with the first seal nng (44) and the first cover ring (40) A backup rmg (38) is engaged with the second seal ring (46) and the second cover rmg (42) In some embodiments, the first seal rmg (44) has a width (W5) that is smaller than a width (W6) of the second seal ring (46) In other embodiments the second seal ring (146) has a circumferential groove (149) formed on an inside surface thereof, the groove (149) disposed directly adjacent the first seal nag (144) In further embodiments, the seal rings (44,46) arc formed of PEEK with a nano-material additive.
