WO2009023011A1 - Springless compressor valve - Google Patents
Springless compressor valve Download PDFInfo
- Publication number
- WO2009023011A1 WO2009023011A1 PCT/US2007/018170 US2007018170W WO2009023011A1 WO 2009023011 A1 WO2009023011 A1 WO 2009023011A1 US 2007018170 W US2007018170 W US 2007018170W WO 2009023011 A1 WO2009023011 A1 WO 2009023011A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- mounting member
- poppet
- valve
- disposed
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 33
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 6
- 230000001846 repelling effect Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—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 F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
- F04B39/1026—Adaptations or arrangements of distribution members the members being disc valves without spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
- B23P15/002—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings poppet valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/084—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves
Definitions
- fluids are compressed and conveyed through a compressor valve.
- the fluid pressure is periodically elevated, e.g., by an oscillating piston.
- the valve opens to allow flow of the compressed fluid to the other side of the valve.
- this continues until the pressure of the fluid drops, and the valve closes, thereby sealing the compressed fluid on the other side of the valve.
- this cycle is typically repeated a large number of times. For example, some reciprocating compressors run at 300-1800 RPM, which cycles their valves at between 5-30 times per second.
- the compressor valves often include components that wear, among which, in particular, are springs.
- a spring pushes the valve closed when the force from the pressure difference across the valve is less than the spring force. Over the life of such valves, the spring may cycle from a compressed state to a relaxed state a large number of times, and this cycling may cause the spring to fatigue. Due to this wear, the compressor valves are often subject to expensive maintenance.
- FIG. 1 is a section view of an embodiment of a magnet-actuated, concentric-ring valve
- FIG. 2 is a section view of an embodiment of a magnet-actuated, ported-plate valve in a compressor
- FIG. 3 is a section view of an embodiment of a magnet-actuated, poppet valve in a compressor
- FIG. 4 is a section view of an embodiment of a magnet magnet- actuated, ring valve which uses either a single ring or a multitude of generally identical rings (which are not necessarily concentric) in a compressor;
- FIG. 5 is a cross-section of a poppet;
- FIG. 6 is a cross-section of another embodiment of a poppet
- FIGS. 7 and 8 are exploded, perspective views of the poppet of
- FIG. 6 is a diagrammatic representation of FIG. 6
- FIG. 9 is a partial cross-section of another embodiment of a poppet valve
- FIG. 10 is a perspective view of an embodiment of a compressor that includes one or more of the features illustrated in FIGS. 1-9;
- FIG. 11 is a cross-section of the compressor of FIG. 10.
- valve closure system An exemplary valve closure system is described below. Some embodiments of this system are particularly suited to reciprocating compressors that, in some embodiments, employ no springs and urge the valve in the closed direction by the force generated from magnets positioned to repel each other. Other applications are envisioned, and different techniques for replacing the spring component in such valve assemblies are a lso contemplated .
- the seat 10 has passages 12 that lead to a seating surface 14. Flow represented by arrow 16 progresses on pressure buildup to push against the valve member 18 to displace it from the seating surface 14, whereupon the flow passes through guard 20 via passages 22, as represented by arrow 24. Aligned with the valve member 18 and extending in guard 20 is a small bore 26 leading into a larger bore 28. A shoe 30 having a bore 32 is secured or mounted in bore 28. A magnet 34 that has a bore 36 aligned in fluid communication with bore 32 is mounted in shoe 30. A button 38 rides over a portion of the shoe 30 and is slidably retained to it to limit its stroke and to keep the two from being detached in ported plate and ring valves.
- valve member 18 can be any one of a number of designs.
- a concentric ring design is illustrated in FIG. 1 and a ported plate design is shown in FIG. 2, a poppet valve is shown is FIG. 3, and a ring, either single ring or multiple same size non-concentric rings for the valve member 18 is shown in FIG. 4.
- FIGS. 1 , 2 and 4 work in generally the same way.
- the presently discussed embodiment also works the same way, but there is no button (the magnet is in the poppet) in FlG. 3, and the poppet is not slidably retained.
- the springs on valves can be eliminated using the magnets.
- the magnets can be permanent or electromagnets or combinations of both.
- the magnets represent just one embodiment that eliminates springs to close the valves.
- the problem addressed by some embodiments of the present invention is to present a valve design that can provide an economical construction and a reliably long service life. That objective is accomplished, in certain embodiments, by elimination of the spring and the use of a force that preferably has a longer life cycle by using components that are less affected or are configured to better withstand the cycling duty of a valve.
- the closing force is provided by the alignment of like poles of permanent magnets.
- Other embodiments are contemplated that deliver a closing force through a device that is not prone to fatigue or wear as would be experienced in an application involving a spring.
- rapid acceleration and deceleration of the button 38, poppet, or other valve components causes damaging inertial forces.
- the illustrated button 38 translates back and forth within the guard 20. In certain embodiments, this cycle occurs relatively frequently, for example once per cycle of a compressor.
- This impact rapidly decelerates the button 38, and the rapid deceleration may give rise to relatively large inertial forces within the button 38.
- large inertial forces may be applied to the button 38 by the magnet 34, which may have a large mass compared to the rest of the button 38. Thus, the magnet 34 may stress the button 38 during an impact.
- FIG. 5 illustrates a poppet 50 and a shoe 52 that is believed to be resistant to some types of fatigue.
- these components 50 and 52 have features that are generally rotationally symmetric and concentric about the axis 57, but in other embodiments, these components, or a subset of their features, may not be concentric or rotationally symmetric, e.g., they may have an elliptical horizontal cross-section.
- the poppet 50 and shoe 52 may be used in a variety of types of valves, including the valves described above and the valve 44 described below with reference to FIG. 9.
- the illustrated poppet 50 includes a body 70 and a magnet 72.
- the body 70 features a sprue tip 74, a head 76, a leg 78, and a shelf 80.
- the sprue tip 74 is an artifact of an injection molding process by which the body 70 is formed, and which is described below. In some embodiments, this feature 74 may be removed by machining.
- the illustrated head 76 defines a contact surface 82 against which a seat seals (e.g., the seat 46 shown in FIG. 9), and in this embodiment, the contact surface 82 is angled downward to delimit a generally frusto-conical volume on the upstream side of the head 76.
- the illustrated leg 78 extends from a downstream side of the head 76 and defines a distal surface 84.
- the leg 78 has a generally circular, tubular shape and demarcates a frusto-conical interior volume 86.
- the leg 78 has a leg length 88 that is defined as the distance between the bottom of the magnet 72 and the distal surface 84, and a leg angle 90 that is defined as the angle between a side of the leg 78 and the axis 57.
- the leg angle 90 may be formed by an interior side of the leg 78 (as illustrated), an exterior side of the leg 78, or both. In some embodiments, the leg angle 90 is greater than or approximately equal to 0 degrees, 5 degrees, or 15 degrees.
- the shelf 80 may extend under the magnet 72 to retain the magnet 72.
- the shelf 80 meets the leg 78 at a fillet 92, and the shelf 80 extends along a shelf distance 94.
- the fillet 92 may have a radius that is relatively large compared to the shelf distance 94.
- the fillet radius 92 may be larger than 20%, 50%, 80%, 120%, or 150% of the shelf distance 94.
- a large fillet radius 92 is believed to diffuse stress in the body 70 and mitigate fatigue from inertial forces applied by the magnet 72.
- the magnet 72 has a generally frusto-conical shape, with a magnet angle 96 defined as the angle between a side of the magnet 72 and the axis 57.
- the magnet 72 may be any of a variety of types of magnets, such as a neodymium magnet or other rare earth magnet, and the magnet angle 90 may have a positive, negative, or generally zero value (e.g., the angle may be acute or the sides may be parallel).
- the illustrated magnet 72 is believed to distribute part of its inertial load to the portion of the body 70 along its sides, thereby potentially further reducing stress concentrations in the body 70.
- poppet 50 is formed by injection molding the body 70 around the magnet 72.
- the magnet 72 is initially positioned within a mold that is complementary to the body 70, and a plastic, such as a carbon fiber infused thermoplastic, or other material, is injected into the mold, around the magnet 72.
- a plastic such as a carbon fiber infused thermoplastic, or other material
- the poppet body 70 secures the magnet 72 without an intermediate member or substance.
- Other embodiments, such as those described below in reference to FIGS. 6-7, may support the magnet 72 with an intermediate member.
- the shoe 52 in the present embodiment, includes a repelling magnet 98, a shoe body.100, a shock absorber 102, and a fluid-drainage passage 104.
- the repelling magnet 98 may be oriented relative to the magnet 72 such that it drives the magnet 72 away from the shoe 52 with a magnetic force.
- the shoe body 100 may be injection molded around the repelling magnet 98.
- the shape of the illustrated shoe body 100 is complementary to the interior volume 86 defined by the leg 78 and defines an impact surface 106.
- the shock absorber 102 is disposed adjacent shoe body 100 opposite the impact surface 106.
- the shock absorber 102 may be positioned on the other side, between the impact surface 106 and the distal surface 84 of the leg 78.
- the shock absorber 102 may be made of nylon, elastomer, or other appropriate, resiliently-compressible materials.
- an elevated fluid pressure e.g., a gas pressure, such as air pressure
- a gas pressure such as air pressure
- the poppet 50 may drive the poppet 50 toward the shoe 52. This movement is indicated by arrow 108.
- fluid in the interior volume 86 escapes through the fluid-drainage passage 104.
- the poppet 50 translates into the poppet receptacle 64 until the distal surface 84 of the leg 78 reaches the impact surface 106, and while it is translating, the poppet receptacle 64 and/or the shoe 52 guide the poppet's movement 108.
- shock absorber 102 may flex, e.g., resiliently compress, to gradually slow its movement 108.
- the length of the leg 78 and thickness of the shock absorber 102 may be selected with a desired degree of resiliency in mind.
- the components may also dissipate the impact energy by, for example, dampening the impact and converting kinetic energy into heat or sound.
- the fluid flows through the intake passage 56, between the seating surface 62 and the contact surface 82 of the poppet 50, and out through the outlet passage 68. Fluid continues to flow until the pressure on either side of the poppet 50 equalizes to some degree determined, in part, by the strength and separation of the magnets 72 and 98.
- the magnets 72 and 98 return the poppet 50 to its original position. At this time, the poppet 50 translates back through the poppet receptacle 64, away from the shoe 52, as indicated by arrow 110.
- the poppet 50 continues moving until the contact surface 82 of the head 76 reaches the seating surface 62 of the seat 46. When they contact, the seating surface 62 and contact surface 82 seal the intake passage 56 from the outlet passage 68. In some embodiments, the magnets 72 and 98 bias the poppet 50 against the seating surface 62.
- certain features of the poppet 50 are believed to reduce the magnitude of its inertial forces by decreasing the deceleration of the poppet 50.
- Some components may gradually slow the poppet 50 when it impacts the shoe 52.
- the shock absorber 102 may resiliently compress during an impact, and lengthen the time period over which the poppet 50 is brought to a stop.
- the leg 78 may also resiliently compress and reduce deceleration.
- the leg length 88 may be relatively long to accentuate strain (e.g., non-plastic deformation) within the body 70.
- the long leg 78 may still act like a spring to some degree. This reduction in acceleration reduces the forces applied to the poppet 50, which may tend to limit fatigue and extend the useful life of the poppet 50.
- the poppet body 70 is injection molded around the magnet 72.
- This may cause problems.
- the injection molding process may expose the magnet to high temperatures, which may degrade the field strength of the magnet.
- the injection molding process may result in high built-in stresses near structurally critical areas of the poppet.
- this problem may be mitigated by the embodiment described below, which attaches the magnet to the poppet with a mounting member.
- FIG.6 illustrates another embodiment of a poppet 112.
- the poppet 112 includes the features of the previously described poppet 50, except that in this embodiment, the magnet 72 is mounted to the body 70 by a mounting member 114, which may be made from metal, high- strength plastic, or other appropriate materials.
- the mounting member 114 transfers forces from the magnet 72 to the body 70.
- the mounting member 114 may either be disposed between the two, as an intermediate member, or interlock the two in some other manner.
- the mounting member 114 includes several features that cooperate to secure the magnet 72.
- the mounting member 114 has a downstream restraint 116 and a downstream restraint 118, which overlap opposing sides of the magnet 72 to secure the magnet 72.
- the mounting member 114 couples to the magnet 72 along its sides with an adhesive layer 120. Threads 122 on the exterior sides of the mounting member 114 interface with complementary threads 124 in the inner volume 86 of the poppet 112. The threads 124 may extend along a portion of the leg 78.
- FIGS. 7 and 8 illustrate exploded views of the poppet 112 from different perspectives.
- the downstream restraint 118 includes one or more plastically-deformable members that are bent over the magnet 72 after the magnet 72 is inserted within the mounting member 114.
- Other embodiments may not include the downstream restraint 118 and may, instead, use an adhesive layer 120 and/or the body 70 to restrain the magnet 72 on the upstream side of the mounting member 114.
- the body 70 and the mounting member 114 are independently formed.
- the poppet body 70 may be injection molded in a process similar to the process described above, and the mounting member 114 may be formed from plastic, metal, or other appropriate materials by casting, injection molding, forging, welding, machining, or a combination thereof.
- the poppet body 70 may be injection molded around the mounting member 114, before inserting the magnet into the mounting member 114.
- the orientation of the mounting member 114 is reversed, and the downstream side of the mounting member 114 includes the deformable members 118.
- Adhesive layer 120 may be applied to the interior of the mounting member 114 (as noted, though, some embodiments may not include the adhesive layer 120), and the magnet 72 is inserted into the interior of the mounting member 114. After the magnet 72 is inserted, the downstream restraint 118 may be bent over the magnet 72, as indicated by arrows 128. Then mounting member 114, with the magnet 72 inside, is placed in the interior volume 86 of the poppet body 70, and a tool rotates the mounting member 114 by applying a torque to the tool interface 126. As the mounting member 114 rotates, it threads on to complementary thread 124, thereby securing the magnet 72 in the body 70 of the poppet 112. [0043]
- the 112 may be formed without exposing the magnet 72 to high temperatures during the injection molding process.
- the magnet 72 is introduced to the poppet body 70 after it is injection molded.
- the magnet 72 avoids the heat from the injection molding process. Avoiding these high temperatures is believed to protect the magnet 72 from being degraded by heat, thus potentially avoiding a processing step to re- magnetize the magnet.
- Forming the body 70 in the absence of the magnet 72 may also avoid stresses from different thermal expansion in the magnet 72 and the body 70.
- some embodiments may reduce internal stresses in the body 70 of the poppet 112.
- the mass of the magnet 72 is relatively large compared to the mass of the body 70.
- inertial forces from the magnet 72 may apply substantial loads to the body 70.
- the threads 122 and 124 may distribute the inertial load over an area of the body 70, thereby potentially reducing stress concentrations at any one point within the body 70. Reducing these stress concentrations is believed to extend the useful life of the poppet 112 by reducing fatigue.
- some embodiments may include other types of mounting members.
- some embodiments may include an elastically deformable mounting member with one or more slots along its sides. To insert the magnet 72, the mounting member may be deformed so the slot is wider, and the magnet 72 may be placed inside the deformed mounting member. Then, the mounting member relaxes around the magnet 72 and the assembly may be attached to the body 70.
- FIG. 9 illustrates another example of a valve 44, which may include one or more of the poppets or other valve members described above.
- the illustrated valve 44 includes a seat 46, a guard 48, a plurality of poppets 50, and a plurality of shoes 52.
- each poppet 50 and corresponding shoe 52 are housed by the seat 46 and the guard 48, which abut one-another and have a generally circular, cylindrical shape. Below, these components are described individually, in greater detail.
- the seat 46 includes a cylindrical lip 54 and a plurality of intake passages 56 in a hexagonal packing arrangement.
- the illustrated intake passages 56 define generally circular, cylindrical volumes, which are concentric about respective axes 57. These axes 57 are generally parallel to both each other and a central axis 58 of the valve 44.
- An upstream portion of the intake passages 56 includes a concentric radius 60, and a downstream portion includes a concentric, chamfered seating surface 62.
- Other embodiments may include intake passages 56 with different shapes, arrangements, or orientations.
- the downstream side of the seat 46 seals against the guard 48, which in this embodiment, includes a plurality of poppet receptacles 64, fluid-drainage apertures 66, and outlet passages 68.
- the poppet receptacles 64 are generally circular, cylindrical volumes that are also concentric about the respective axes 57.
- the poppet receptacles 64 are sized to match the poppet 50, so that the poppet 50 may translate within the poppet receptacle 64 along a generally linear path. Consequently, these poppets 50 may be characterized as having a single degree of freedom, which, as an example, in this embodiment, is their position along the axis 57. Other embodiments may have additional degrees of freedom that correspond to different types of movement.
- the fluid-drainage apertures 66 are disposed under shoe 52 and are in fluid communication with a volume 86 (FIG. 5) between the poppet 50 and shoe 52.
- the illustrated outlet passages 68 are generally parallel to both one another and the intake passages 56. In this embodiment, the outlet passages 68 are disposed off-axis from the intake passages 56, beside the poppets 50, and extend through the guard 48 to its downstream side. Other embodiments may not include the poppet receptacles 64.
- the shoe 52 may guide the movement of the poppet 50.
- the various valves described above may be employed in a variety of fluid-handling systems, including fluid compressors.
- An exemplary compressor 210 is provided in FIG. 10.
- the compressor 210 includes a pair of compression cylinders 212 coupled to a frame 214.
- a variety of internal components may be disposed within the cylinders 212 and the frame 214 to enable compression of fluids within the cylinders 212.
- the compressor 210 may be utilized to compress natural gas.
- the compressor 210 may be configured and/or used to compress other fluids.
- a mechanical power source or driver 216 such as an engine or an electric motor, may be coupled to the compressor 210 to provide mechanical power to the various internal components and to enable compression of the fluid within the cylinders 212.
- openings in the frame 214 may be provided and selectively accessed via removable covers disposed over the openings.
- the exemplary cylinders 212 include capped recesses 218 configured to receive valve assemblies, such as valve assembly 220.
- the valve assembly 220 may include one or more of the various valve embodiments discussed above. While only a single valve assembly 220 is illustrated, it will be appreciated that, in various embodiments, additional valve assemblies are included within some or all of the other capped recesses 218.
- the cylinders 212 may include internal fluid conduits between the recesses 218 and the valve assemblies 220 to facilitate flow of a fluid into and out of the cylinders 212 through such valve assemblies. Additionally, various installation components, such as cages or fasteners, may be employed to facilitate mounting of the valve assemblies 220 within the recesses 218.
- the exemplary compressor 210 is illustrated as a two- throw reciprocating compressor, other compressor configurations may also employ and benefit from the presently disclosed techniques.
- the compressor 210 may include a different number of cylinder throws, such as a four-throw compressor, a six-throw compressor, a couple-free reciprocating compressor, a screw compressor, or the like.
- other variations are also envisaged, including variations in the length of stroke, the operating speed, and the size, to name but a few.
- FIG. 11 A cross-sectional view of the exemplary compressor 210 is provided in FIG. 11 , which illustrates a number of exemplary internal components of the compressor of FIG. 10.
- the frame 214 of the exemplary compressor 210 includes a hollow central body or housing 222 that generally defines an interior volume 224 in which various internal components may be received, such as a crankshaft 226.
- the central body 222 may have a generally curved or cylindrical shape. It should be noted, however, that the central body 222 may have other shapes or configurations in full accordance with the present techniques.
- the driver 216 rotates the crankshaft 226 supported within the interior volume 224 of the frame 214.
- the crankshaft 226 is coupled to crossheads 230 via connecting rods 228 and pins 232.
- the crossheads 230 are disposed within crosshead guides 234, which generally extend from the central body 222 and facilitate connection of the cylinders 212 to the compressor 210.
- the compressor 210 includes two crosshead guides 234 that extend generally perpendicularly from opposite sides of the central body or housing 222, although other configurations are also envisaged.
- the rotational motion of the crankshaft 226 is translated via the connecting rods 228 to reciprocal linear motion of the crossheads 230 within the crosshead guides 234.
- the cylinders 212 are configured to receive a fluid for compression.
- the crossheads 232 are coupled to pistons 236 disposed within the cylinders 212, and the reciprocating motion of the crossheads allows compression of fluid within the cylinders 212 via the pistons 236.
- the piston 236 is driven forward (i.e., outwardly from central body 222) into the cylinder 212, the piston 236 forces fluid within the cylinder into a smaller volume, thereby increasing the pressure of the fluid.
- a discharge valve such as valve assembly 220, may then open to allow the pressurized or compressed fluid to exit the cylinder 212.
- the piston 236 may then stroke backward, and additional fluid may enter the cylinder 212 through an inlet valve, which may also comprise the valve assembly 220, for compression in the same manner described above.
- the cylinders 212 can be configured to facilitate fluid compression on both the forward and the backward strokes of the piston 236. For instance, as the piston 236 moves forward in the manner discussed above to compress fluid on one side of the piston, additional fluid may be introduced into the cylinder on the opposite side of the piston. Such fluid would then be compressed on the backward stroke of the piston 236.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0721924-5A BRPI0721924A2 (en) | 2007-08-13 | 2007-08-15 | SPRING-FREE COMPRESSOR VALVE |
GB1002987A GB2465704B (en) | 2007-08-13 | 2007-08-15 | Springless compressor valve |
NO20100170A NO20100170L (en) | 2007-08-13 | 2010-02-03 | Springless compressor valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/838,123 US7533692B2 (en) | 2005-02-14 | 2007-08-13 | Springless compressor valve |
US11/838,123 | 2007-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009023011A1 true WO2009023011A1 (en) | 2009-02-19 |
Family
ID=40002918
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/018170 WO2009023011A1 (en) | 2007-08-13 | 2007-08-15 | Springless compressor valve |
PCT/US2008/070470 WO2009023405A1 (en) | 2007-08-13 | 2008-07-18 | Springless compressor valve |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/070470 WO2009023405A1 (en) | 2007-08-13 | 2008-07-18 | Springless compressor valve |
Country Status (4)
Country | Link |
---|---|
BR (1) | BRPI0721924A2 (en) |
GB (1) | GB2465704B (en) |
NO (1) | NO20100170L (en) |
WO (2) | WO2009023011A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012003777A1 (en) * | 2010-07-08 | 2012-01-12 | 厦门松霖科技有限公司 | Magnetic check valve |
ITCO20110072A1 (en) * | 2011-12-22 | 2013-06-23 | Nuovo Pignone Spa | VALVES WITH VALVE VALVE END CONNECTED TO THE ACTUAL COUNTERS AND RELATIVE METHODS |
CN110594128A (en) * | 2019-10-23 | 2019-12-20 | 江西三丰医药科技有限公司 | Vacuum pump |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2118540B1 (en) | 2007-02-12 | 2020-11-25 | Zahroof Valves, Inc. | Valve assembly and system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2367260A (en) * | 1942-05-02 | 1945-01-16 | Pacific Flush Tank Co | Pressure and vacuum relief device |
US3485441A (en) * | 1966-09-28 | 1969-12-23 | Texas Gas Transmission Corp | Magnetically biased compressor check valves |
US4273153A (en) * | 1979-10-09 | 1981-06-16 | Girard Equipment, Inc. | Vibration resistant pressure actuated vacuum breaker |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4016040A1 (en) * | 1990-05-18 | 1991-11-21 | Vortex Gmbh Dt | Stop valve with loaded plug |
US5320136A (en) * | 1993-03-19 | 1994-06-14 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Magnetically operated check valve |
US5366506A (en) * | 1993-04-05 | 1994-11-22 | Davis Phillip J | Proximity intraurethral valve using permanent magnet check |
WO2006045300A2 (en) * | 2004-10-29 | 2006-05-04 | Zimmer Gmbh Technische Werkstätten | Pilot valve with an enclosed magnetic or magnetisable valve body |
US7819131B2 (en) * | 2005-02-14 | 2010-10-26 | Cameron International Corporation | Springless compressor valve |
-
2007
- 2007-08-15 WO PCT/US2007/018170 patent/WO2009023011A1/en active Application Filing
- 2007-08-15 BR BRPI0721924-5A patent/BRPI0721924A2/en not_active IP Right Cessation
- 2007-08-15 GB GB1002987A patent/GB2465704B/en not_active Expired - Fee Related
-
2008
- 2008-07-18 WO PCT/US2008/070470 patent/WO2009023405A1/en active Application Filing
-
2010
- 2010-02-03 NO NO20100170A patent/NO20100170L/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2367260A (en) * | 1942-05-02 | 1945-01-16 | Pacific Flush Tank Co | Pressure and vacuum relief device |
US3485441A (en) * | 1966-09-28 | 1969-12-23 | Texas Gas Transmission Corp | Magnetically biased compressor check valves |
US4273153A (en) * | 1979-10-09 | 1981-06-16 | Girard Equipment, Inc. | Vibration resistant pressure actuated vacuum breaker |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012003777A1 (en) * | 2010-07-08 | 2012-01-12 | 厦门松霖科技有限公司 | Magnetic check valve |
ITCO20110072A1 (en) * | 2011-12-22 | 2013-06-23 | Nuovo Pignone Spa | VALVES WITH VALVE VALVE END CONNECTED TO THE ACTUAL COUNTERS AND RELATIVE METHODS |
EP2607698A3 (en) * | 2011-12-22 | 2016-03-02 | Nuovo Pignone S.p.A. | Valves with valve closing member attached to the actuated counter-seat and related methods |
US10253765B2 (en) | 2011-12-22 | 2019-04-09 | Nuovo Pignone S.P.A. | Valves with valve closing member attached to the actuated counter-seat and related methods |
CN110594128A (en) * | 2019-10-23 | 2019-12-20 | 江西三丰医药科技有限公司 | Vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
BRPI0721924A2 (en) | 2014-03-11 |
WO2009023405A1 (en) | 2009-02-19 |
GB201002987D0 (en) | 2010-04-07 |
GB2465704B (en) | 2011-10-19 |
NO20100170L (en) | 2010-05-11 |
GB2465704A (en) | 2010-06-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7533692B2 (en) | Springless compressor valve | |
US8485801B2 (en) | Poppet valve assembly | |
KR100697025B1 (en) | Linear Compressor | |
KR100673460B1 (en) | Linear Compressor | |
EP2150736B1 (en) | Caged poppet valve | |
AU2010322003B2 (en) | Systems and methods for a reed valve module and valve assembly | |
WO2009023405A1 (en) | Springless compressor valve | |
US9103335B2 (en) | System and devices including valves coupled to electric devices and methods of making, using, and operating the same | |
EP2118540B1 (en) | Valve assembly and system | |
KR20070054349A (en) | Pump for brake system | |
KR100597299B1 (en) | Oil pumping apparatus of reciprocating compressor | |
CN220849948U (en) | Air compressor and gas storage system | |
CN117028208A (en) | Air compressor and gas storage system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07836915 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 1002987 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20070815 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1002987.4 Country of ref document: GB |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07836915 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: PI0721924 Country of ref document: BR Kind code of ref document: A2 Effective date: 20100211 |