CN115962185A - Novel split type high-frequency reversing decompression cylinder for hydraulic drive diaphragm compressor - Google Patents
Novel split type high-frequency reversing decompression cylinder for hydraulic drive diaphragm compressor Download PDFInfo
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- 230000006837 decompression Effects 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 6
- 230000004313 glare Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000012827 research and development Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 25
- 239000010720 hydraulic oil Substances 0.000 description 21
- 238000013461 design Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
The invention discloses a novel high-frequency reversing decompression cylinder for a split type liquid-driven diaphragm compressor, and relates to the technical field of decompression cylinders, wherein the decompression cylinder comprises a movable part and a static part, the static part comprises a low-pressure side cylinder body, a low-pressure side bushing, a screw, a high-pressure side cylinder body, a high-pressure side bushing, an oil injection port and an end cover, and the low-pressure side cylinder body is detachably connected with one end of the high-pressure side cylinder body. Can change specific implementation scheme according to the demand of difference is nimble, and need not redesign cylinder body, effectual research and development cost and the manufacturing cost of having reduced.
Description
Technical Field
The invention relates to the technical field of decompression cylinders, in particular to a novel high-frequency reversing decompression cylinder for a split type liquid-driven diaphragm compressor.
Background
A decompression cylinder for a liquid-driven diaphragm compressor is a hydraulic actuator for converting high-pressure small-flow hydraulic oil into low-pressure large-flow hydraulic oil. Is limited by the difficulty of research and development, research and development costs, and the manufacturing costs after the batch production of the large displacement hydraulic pump.
In the process of developing the liquid-driven diaphragm compressor with different displacement, the pressure reducing cylinder is designed again, so that the design time and cost are necessarily consumed, and in addition, the test verification is required to be carried out again. Existing liquid-driven diaphragm compressors tend to use mature small displacement hydraulic pumps as the pressure source. Therefore, in order to match the requirement of large displacement on the air side of the compressor, the small-displacement hydraulic pump needs to use a decompression cylinder as an intermediate mechanism to convert high-pressure small-flow hydraulic oil into large-flow hydraulic oil to push a diaphragm in the diaphragm compressor to do work.
When the decompression cylinder is used, one end of the decompression cylinder is connected with a hydraulic pump, and the other end of the decompression cylinder is connected with a membrane head. The plunger is used on the side connected to the hydraulic pump, the piston is used on the side connected to the diaphragm head, the sectional area of the piston is larger than that of the plunger, and the ratio of the sectional area of the piston to that of the plunger is called a decompression ratio.
Designing compressors of different displacement requires different decompression ratios, and if the same displacement hydraulic pump is used for compression, the structure of the plunger connecting the side of the hydraulic pump is completely similar, and the piston needs to be designed into different sectional areas.
At present, a high-pressure plunger and a low-pressure side piston of a decompression cylinder share one cylinder body, the high-pressure side plunger and the low-pressure side piston are assembled and then are installed in the cylinder body together, and when the decompression cylinder is used, the low-pressure side cylinder body on one side of a hydraulic cylinder is inconvenient to disassemble and replace, so that the decompression ratio between the cross section area of the piston and the cross section area of the plunger is changed, a new cylinder body needs to be manufactured, and the cost is high.
In addition, if the conventional decompression cylinder uses a static pressure support structure, hydraulic oil on the high-pressure side may leak to the static pressure support position, so that the effect of the static pressure support is affected. The high-pressure side of the decompression cylinder is generally sealed by two methods, one is sealed by a Gray ring, and the other is sealed by a gap. Both methods have advantages and disadvantages. With the use of the greige ring seal, leakage is small, but the seal is easily worn, and additionally, additional cost is added when the seal is purchased, and the risk of the oil temperature being higher when the seal is used for sealing the hydraulic oil on the high-pressure side exists. The oil temperature can be reduced by using clearance sealing, the cost for purchasing the sealing element can be reduced, and the problems of abrasion of the dynamic sealing element, limited service life and the like are solved. The decompression cylinders of the two sealing methods need different decompression cylinder bodies and cannot be compatible.
From the above, we have designed a novel split type liquid drive diaphragm compressor for the high frequency switching decompression cylinder solve above problem for this reason.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a novel high-frequency reversing decompression cylinder for a split type liquid-driven diaphragm compressor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-frequency reversing decompression cylinder for a novel split type liquid-driven diaphragm compressor comprises a movable part and a static part, wherein the static part comprises a low-pressure side cylinder body, a low-pressure side bushing, a screw, a high-pressure side cylinder body, a high-pressure side bushing, an oil injection port and an end cover,
the low-pressure side cylinder body is detachably connected with one end of the high-pressure side cylinder body, the other end of the high-pressure side cylinder body is detachably connected with the end cover, the low-pressure side bushing is installed in the low-pressure side cylinder body in an interference fit mode, and the high-pressure side bushing is installed in the high-pressure side cylinder body in an interference fit mode;
the movable part comprises a high-pressure side plunger assembly, a low-pressure side piston and a ball head, the low-pressure side piston is arranged in a low-pressure side bushing, the high-pressure side plunger assembly is arranged in a high-pressure side bushing, one end of the high-pressure side plunger assembly is fixedly connected with the ball head, and the other side of the ball head is detachably connected with the low-pressure side piston;
the high-pressure side plunger assembly comprises a high-pressure side plunger and a sealing structure arranged between the high-pressure side plunger and the high-pressure side cylinder body.
Preferably, the one end of low pressure side cylinder body is passed through screw and high pressure side cylinder body fixed connection, there is the membrane head other end of low pressure side cylinder body through bolted connection, one side that the high pressure side cylinder body is close to the low pressure side cylinder body is provided with first tang, one side that the end cover is close to the high pressure side cylinder body is provided with the second tang, the junction between low pressure side cylinder body and the high pressure side cylinder body the junction between the high pressure side cylinder body and between the end cover all installs O type sealing washer.
Preferably, the inside of high pressure side cylinder body includes small aperture hollow structure and large aperture hollow structure, small aperture hollow structure and large aperture hollow structure through connection, small aperture hollow structure is close to the one end of low pressure side cylinder body, the high pressure side bush is installed inside large aperture hollow structure.
Preferably, the low pressure side piston moves in a low pressure side bushing and the high pressure side piston moves in a high pressure side bushing, and the sealing structure includes one or more of a guide bush installed inside the small bore hollow structure or a gurley ring installed outside the high pressure side piston inside the large bore hollow structure.
Preferably, when the sealing structure is a guide rod bushing installed inside the small-aperture hollow structure, the guide rod bushing is installed outside the high-pressure side plunger, a gap is formed between the high-pressure side plunger and the guide rod bushing, and a circular oil drainage channel communicated with the large-aperture hollow structure is arranged inside the high-pressure side cylinder below the guide rod bushing.
Preferably, when the sealing structure is a large-aperture hollow structure, and the GREEN is arranged outside the high-pressure side plunger, a through structure is arranged between the small-aperture hollow structure and the outside of the high-pressure side plunger.
Preferably, a low-pressure side oil drainage cavity is formed in the low-pressure side cylinder body, and a high-pressure side oil drainage cavity is formed in the high-pressure side cylinder body.
Preferably, the movable part further comprises a sliding shoe, a sliding shoe gland, a sliding shoe cushion block, a Glare ring and a guide belt, the sliding shoe cushion block is installed in the low-pressure side piston in an interference fit mode, the sliding shoe is installed in the sliding shoe cushion block, a gap for the sliding shoe to slide in the sliding shoe cushion block is arranged between the sliding shoe and the sliding shoe cushion block, the ball head is connected with one end of the high-pressure side plunger through a screw, the ball head is installed in the sliding shoe, and the sliding shoe gland is connected with the low-pressure side piston through a screw.
Preferably, the low-pressure side cylinder body further comprises a check valve with a guide rod, the check valve with the guide rod is installed inside the low-pressure side piston and comprises a valve cover, a spring, a valve seat, a valve core, a push rod, a guide bushing and a cushion block, and the cushion block is installed on the high-pressure side cylinder body.
Preferably, the valve cover and the valve seat are fixedly connected to form a shell structure of the one-way valve, the spring is installed inside the valve seat, one end of the spring is abutted to one side inside the valve seat, the other end of the spring is connected with the valve core, the other end of the valve core is connected with the ejector rod, and guide bushings are installed on the outer portion of the ejector rod and one side inside the valve seat.
Compared with the prior art, the invention has the beneficial effects that:
1. the pressure reducing ratio of the pressure reducing cylinder in the scheme is changed by only redesigning the low-pressure side piston, the low-pressure side cylinder body and the low-pressure side bushing, and the high-pressure side cylinder body, the high-pressure side bushing, the end cover and the plunger can be the same as the original scheme. Therefore, more than half of design time and verification test time can be saved, the manufacturing cost is reduced, and the high universality of parts can be realized.
2. In this arrangement, the low pressure side liner and the high pressure side liner can be replaced if they are worn to some extent during long term use. The design can avoid replacing the cylinder body, thereby saving the manufacturing cost and the maintenance cost.
3. In the scheme, the pressure reducing cylinder realizes the compatibility of two schemes of using clearance seal and guide rod static pressure support for the high-pressure side plunger and using Glare ring seal for the high-pressure side plunger. The method has the advantages that the specific embodiment can be flexibly changed according to different requirements without redesigning the cylinder body; the decompression cylinder block is the one with the highest manufacturing cost and the longest manufacturing time among all the components of the decompression cylinder; therefore, the scheme can effectively reduce the research and development cost and the manufacturing cost. Meanwhile, the static pressure support can avoid the influence of hydraulic oil on the high-pressure side, and the static pressure support effect is better.
4. Through low pressure side cylinder body still including installing the check valve of taking the guide arm in low pressure side piston inside, when high pressure side plunger moved to high pressure side dead center, ejector pin and the cushion contact of installing on the high pressure side cylinder body, the check valve is opened, and the hydraulic oil between membrane head and the decompression cylinder can leak through this check valve this moment to play the effect that high temperature hydraulic oil reduces system's oil temperature in the replacement system.
Drawings
FIG. 1 is a schematic structural view of a high-frequency reversing decompression cylinder for a novel split type liquid-driven diaphragm compressor, which is provided by the invention;
FIG. 2 is a sectional view of a high-frequency reversing decompression cylinder for a novel split type hydraulic-driven diaphragm compressor, which is provided by the invention;
FIG. 3 is a sectional view of a second embodiment of the high-frequency reversing decompression cylinder for the novel split-type hydraulic-driven diaphragm compressor according to the present invention;
fig. 4 is a schematic structural diagram of a third embodiment of the high-frequency reversing decompression cylinder for the novel split-type liquid-driven diaphragm compressor provided by the invention.
In the figure: 1 high-pressure side plunger assembly, 101 high-pressure side plunger, 2 low-pressure side piston, 3 ball heads, 4 low-pressure side cylinder body, 5 low-pressure side bushing, 6 high-pressure side cylinder body, 7 high-pressure side bushing, 8 sliding shoe, 9 sliding shoe gland, 10 sliding shoe cushion block, 11 end cover, 12 one-way valve, 13 guide rod bushing, 14 Glae ring, 15 guide belt, 16 first spigot, 17 oil drainage channel, 18 low-pressure side oil drainage cavity, 19 high-pressure side oil drainage cavity, 20 cushion block, 21 valve cover, 22 valve cover, 23 spring, 24 valve seat, 25 valve core, 26 ejector rod, 27 guide bushing and 28 oil filling port.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the technical scheme in the embodiment of the invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the invention, and obviously, the embodiment described is only a part of the embodiment of the invention, but not all the embodiment.
When the decompression cylinder is used, one end of the decompression cylinder is connected with a hydraulic pump, and the other end of the decompression cylinder is connected with a membrane head. The plunger is used on the side connected to the hydraulic pump, the piston is used on the side connected to the diaphragm head, the sectional area of the piston is larger than that of the plunger, and the ratio of the sectional area of the piston to that of the plunger is called a decompression ratio.
The compressor of the different discharge capacities of design needs different decompression than, if the hydraulic pump of same discharge capacity is used in the compression, the plunger structure of connecting that side of hydraulic pump is similar completely, and the piston need design into different sectional areas, this scheme mainly is to dismantle the change through the low pressure side cylinder body 4 to pneumatic cylinder one side to change the decompression ratio between the sectional area of piston and the sectional area of plunger, reach the purpose of practicing thrift design time more than half and verification test time, also can realize the effect such as high versatility of part.
Example one
Referring to fig. 1-2, the high-frequency reversing decompression cylinder for the novel split type liquid-driven diaphragm compressor comprises a movable part and a static part, wherein the static part comprises a low-pressure side cylinder body 4, a low-pressure side bushing 5, a screw, a high-pressure side cylinder body 6, a high-pressure side bushing 7, an oil injection port 28 and an end cover 11, the low-pressure side cylinder body 4 is detachably connected with one end of the high-pressure side cylinder body 6, the other end of the high-pressure side cylinder body 6 is detachably connected with the end cover 11, the low-pressure side bushing 5 is installed in the low-pressure side cylinder body 4 in an interference fit mode, and the high-pressure side bushing 7 is installed in the high-pressure side cylinder body 6 in an interference fit mode;
the high-pressure side cylinder body 6 comprises a small-aperture hollow structure and a large-aperture hollow structure, the diameter of the small-aperture hollow structure is smaller than that of the large-aperture hollow structure, the small-aperture hollow structure is communicated with the large-aperture hollow structure, the small-aperture hollow structure is close to one end of the low-pressure side cylinder body 4, the high-pressure side bush 7 is installed inside the large-aperture hollow structure, the GREEN 14 is installed on the outer side of the high-pressure side plunger 101 inside the large-aperture hollow structure, and a through structure is arranged between the small-aperture hollow structure and the outer side of the high-pressure side plunger 101; when the decompression cylinder is operated, the low pressure side piston 2 moves in the low pressure side bush 5, and the high pressure side plunger 101 moves in the high pressure side bush 7. The low-pressure side liner 5 and the high-pressure side liner 7 may be worn away during a long period of use, and if the wear is so great that the low-pressure side liner 5 or the high-pressure side liner 7 can be directly replaced. The design can avoid replacing the whole cylinder body, thereby saving the manufacturing cost and the maintenance cost.
More specifically, one end of the low-pressure side cylinder body 4 is fixedly connected with the high-pressure side cylinder body 6 through a screw, the other end of the low-pressure side cylinder body 4 is connected to the membrane head through a screw, a first spigot 16 is arranged on one side, close to the low-pressure side cylinder body 4, of the high-pressure side cylinder body 6, and the first spigot 16 is matched with the low-pressure side cylinder body 4, so that the installation precision can be improved; one side of the end cover 11 close to the high-pressure side cylinder body 6 is provided with a second spigot, and the end cover 11 is matched with the high-pressure side cylinder body 6 through the second spigot. O-shaped sealing rings are arranged at the joints between the low-pressure side cylinder body 4 and the high-pressure side cylinder body 6 and between the high-pressure side cylinder body 6 and the end cover 11 for sealing, the O-shaped sealing rings are made of rubber materials, and the O-shaped sealing rings can be arranged at a first spigot 16 and a second spigot at the joints at the two sides of the high-pressure side cylinder body 6.
When in use, if the compressors with different displacements use the same hydraulic pump, only the decompression cylinders with different decompression ratios need to be designed. And the newly designed pressure reducing cylinder needs to change the pressure reducing ratio only by redesigning the low pressure side piston 2 and the low pressure side cylinder 4 and the low pressure side bush 5, and the high pressure side cylinder 6, the high pressure side bush 7, the end cover 11 and the high pressure side plunger 101 can be the same as the original scheme. Therefore, more than half of design time and verification test time can be saved, and high universality of the part can be realized.
The movable part comprises a high-pressure side plunger assembly 1, a low-pressure side piston 2 and a ball head 3, the low-pressure side piston 2 is installed in a low-pressure side bushing 5, the high-pressure side plunger assembly 1 is installed in a high-pressure side bushing 7, one end of the high-pressure side plunger assembly 1 is fixedly connected with the ball head 3, and the other side of the ball head 3 is detachably connected with the low-pressure side piston 2;
more specifically, the movable part further comprises a sliding shoe 8, a sliding shoe gland 9, a sliding shoe cushion block 10, a Glare ring 14 and a guide belt 15, wherein the sliding shoe cushion block 10 is arranged in the low-pressure side piston 2 in an interference fit mode, the sliding shoe 8 is arranged in the sliding shoe cushion block 10, a gap for the sliding shoe 8 to slide in the sliding shoe cushion block 10 is formed between the sliding shoe 8 and the sliding shoe cushion block 10, and the sliding shoe 8 can slide in the sliding shoe cushion block 10, so that the design can compensate the position deviation of the low-pressure side piston 2 and the high-pressure side plunger 101 in the working process, and the low-pressure side piston 2 and the high-pressure side plunger 101 are prevented from being clamped in a cylinder body and cannot move;
the ball 3 is connected to one end of the high-pressure plunger 101 by a screw, the ball 3 is mounted in the slipper 8, and the slipper pressure cover 9 is connected to the low-pressure piston 2 by a screw, so that the separation of the slipper 8, the ball 3 and the low-pressure piston 2 can be prevented. The ball 3 and the shoe 8 are designed to allow the high-pressure plunger 101 to have a certain degree of freedom in the rotation angle, and compared with a structure in which the high-pressure plunger 101 is rigidly connected to the low-pressure plunger 2, the design enables the movements of the low-pressure plunger 2 and the high-pressure plunger 101 not to be influenced by each other, enables the high-pressure plunger 101 to adjust the movement attitude more flexibly, and reduces the risk of deflection or failure, in addition to the above-mentioned position compensation.
More specifically, the high-pressure side plunger 1 and the ball 3 are connected through only one screw, which utilizes the characteristic that the high-pressure side plunger 101 is only pressed during the movement process, and the screw can prevent the ball 3 and the high-pressure side plunger 101 from being separated, and meanwhile, the screw is basically not pressed during the movement process. The design greatly reduces the installation difficulty, and meanwhile, the high-pressure side plunger 101 and the ball head 3 can bear larger load and ensure the simple and reliable structure through simple clearance fit and screw connection.
It should be noted that, during the installation of the decompression cylinder, the low pressure side piston 2 may be installed in the low pressure side cylinder 4, then the high pressure side plunger 101 is installed in the high pressure side cylinder 6, then the high pressure side plunger 101 is connected to the ball 3, and finally the ball 3 is connected to the low pressure side piston 2. The installation mode can avoid the damage to the bushing caused by the fact that the high-pressure side plunger 1 runs too long in the high-pressure side bushing 7 during installation.
Example two
As shown in fig. 3, in embodiment 1, a guide rod bush 13 is attached to the inside of a small-bore hollow structure inside the high-pressure side cylinder 6, and the high-pressure side plunger 101 is replaced with the high-pressure side plunger assembly 1 that is gap-sealed by the guide rod bush 13.
When the guide rod bush 13 is mounted inside the small-aperture hollow structure of the sealing structure, the guide rod bush 13 is mounted outside the high-pressure side plunger 101, a gap is formed between the high-pressure side plunger 101 and the guide rod bush 13, and a circular oil drainage channel 17 communicated with the large-aperture hollow structure is arranged inside the high-pressure side cylinder 6 below the guide rod bush 13.
More specifically, a low-pressure side oil drainage cavity 18 is arranged in the low-pressure side cylinder body 4, and a high-pressure side oil drainage cavity 19 is arranged in the high-pressure side cylinder body 6.
In example 1, the high-pressure side cylinder 6 is divided into two parts by the difference in the inner bore diameter, and the part with the smaller bore diameter is used for hydrostatic support and the part with the larger bore diameter is used for movement of the high-pressure side plunger 101. The high-pressure side cylinder block 6 is provided with an oil filling port 28, and hydraulic oil under pressure is introduced into a gap between the high-pressure side plunger 101 and the guide rod bush 13 through the oil filling port 28, thereby performing a static pressure supporting function on the high-pressure side plunger 101. A low-pressure side oil drainage cavity 18 is formed in the low-pressure side cylinder body 4, a high-pressure side oil drainage cavity 19 is formed in the high-pressure side cylinder body 6, and the low-pressure side oil drainage cavity 18 and the high-pressure side oil drainage cavity 19 are connected through a circular oil drainage channel 17. The hydraulic oil for the hydrostatic bearing can leak into the low-pressure side drain chamber 18 and the high-pressure side drain chamber 19, and this design completely separates the high-pressure hydraulic oil on the high-pressure side plunger 101 side from the hydraulic oil for the hydrostatic bearing, which is completely unaffected by the high-pressure hydraulic oil on the high-pressure side plunger 101 side.
Further, it can be seen from examples 1 and 2 that the decompression cylinder achieves compatibility between the two schemes of using the clearance seal + the guide rod hydrostatic bearing for the high-pressure side plunger 101 and the gurley 14 seal for the high-pressure side plunger 101. When the rod guide bushing 13 is not installed in the high-pressure side cylinder 6, a scheme in which the high-pressure side plunger 101 is sealed with the greige ring 14 may be adopted; when the guide rod bushing 13 is installed in the high pressure side cylinder 6, a scheme of using a clearance seal + guide rod hydrostatic bearing for the high pressure side plunger 101 may be used. The advantage of this is that the specific embodiment can be flexibly changed according to different requirements without redesigning the cylinder body. The decompression cylinder block is the component that is the most expensive and the longest in manufacturing time of all the components of the decompression cylinder. Therefore, the scheme can effectively reduce the research and development cost and the manufacturing cost.
EXAMPLE III
Because the sealing effect of the GREEN 14 is better, the leakage of the hydraulic oil between the low-pressure side of the decompression cylinder and the membrane head is less, and the working temperature of the hydraulic oil is increased due to the compressed gas. For the case that the oil temperature of the compressor system is high, the problem can be solved through the third embodiment.
Referring to fig. 4, in the third embodiment, in addition to the first embodiment, the low-pressure side cylinder 4 further includes a check valve 12 with a guide rod installed inside the low-pressure side piston 2, the check valve 12 with the guide rod includes a valve cover 21, a valve cover 22, a spring 23, a valve seat 24, a valve core 25, a push rod 26, a guide bush 27, and a cushion block 20, and the cushion block 20 is installed on the high-pressure side cylinder 6.
More specifically, the valve cover 21, the valve cover 22 and the valve seat 24 are fixedly connected to form an outer shell structure of the check valve, the spring 23 is installed inside the valve seat 24, one end of the spring 23 is arranged to abut against one side inside the valve seat 24, the other end of the spring 23 is connected with the valve element 25, the other end of the valve element 25 is connected with the ejector rod 26, and the guide bush 27 is installed outside the ejector rod 26 and on one side inside the valve seat 24. When the plunger piston at the high pressure side 1 moves to a high pressure side dead center, the ejector rod 36 is contacted with the cushion block 20 arranged on the cylinder body 6 at the high pressure side, the one-way valve 12 is opened, and at the moment, hydraulic oil between the membrane head and the decompression cylinder can leak through the one-way valve 12, so that the function of replacing high-temperature hydraulic oil in the system to reduce the oil temperature of the system is achieved.
More specifically, the installation of the check valve 12 with a guide rod on the low-pressure side piston 2 can also play a role in increasing the damping of the decompression cylinder and reducing the impact. The specific mechanism is as follows: when liquid drive diaphragm compressor breathes in, under the effect of suction pressure, the movable part in the decompression cylinder can be followed low pressure side direction high pressure side and moved, when the movable part moves to and is close high pressure side dead center, check valve 12 opens, the hydraulic oil of low pressure side area pressure is because check valve 12 opens the back and passes through oiling mouth 28 and oil tank intercommunication, at this moment, the pressure of hydraulic oil can be let out, at this moment the atress of whole movable part will reduce fast, in addition because hydraulic oil blowout has a reverse thrust in the check valve 12 in the twinkling of an eye, thrust is exerted on cushion 20, thereby play a damping, reduce the effect that the movable part strikeed the cylinder body.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high-frequency reversing decompression cylinder for a novel split type liquid-driven diaphragm compressor comprises a movable part and a static part, wherein the static part comprises a low-pressure side cylinder body (4), a low-pressure side bush (5), a screw, a high-pressure side cylinder body (6), a high-pressure side bush (7), an oil injection port (28) and an end cover (11), and is characterized in that,
the low-pressure side cylinder body (4) is detachably connected with one end of the high-pressure side cylinder body (6), the other end of the high-pressure side cylinder body (6) is detachably connected with the end cover (11), the low-pressure side bushing (5) is installed in the low-pressure side cylinder body (4) in an interference fit mode, and the high-pressure side bushing (7) is installed in the high-pressure side cylinder body (6) in an interference fit mode;
the movable piece comprises a high-pressure side plunger assembly (1), a low-pressure side piston (2) and a ball head (3), the low-pressure side piston (2) is installed in a low-pressure side bushing (5), the high-pressure side plunger assembly (1) is installed in a high-pressure side bushing (7), one end of the high-pressure side plunger assembly (1) is fixedly connected with the ball head (3), and the other side of the ball head (3) is detachably connected with the low-pressure side piston (2);
the high-pressure side plunger assembly (1) comprises a high-pressure side plunger (101) and a sealing structure arranged between the high-pressure side plunger (101) and a high-pressure side cylinder body (6).
2. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor is characterized in that one end of the low-pressure side cylinder body (4) is fixedly connected with the high-pressure side cylinder body (6) through a screw, the other end of the low-pressure side cylinder body (4) is connected with a membrane head through a screw, a first spigot (16) is arranged on one side, close to the low-pressure side cylinder body (4), of the high-pressure side cylinder body (6), a second spigot is arranged on one side, close to the high-pressure side cylinder body (6), of the end cover (11), and O-shaped sealing rings are arranged at the connecting part between the low-pressure side cylinder body (4) and the high-pressure side cylinder body (6) and the connecting part between the high-pressure side cylinder body (6) and the end cover (11).
3. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor according to claim 1, wherein the high-pressure side cylinder body (6) comprises a small-aperture hollow structure and a large-aperture hollow structure, the small-aperture hollow structure and the large-aperture hollow structure are in through connection, the small-aperture hollow structure is close to one end of the low-pressure side cylinder body (4), and the high-pressure side bushing (7) is installed inside the large-aperture hollow structure.
4. The high-frequency reversing decompression cylinder for the novel split type liquid-driven diaphragm compressor is characterized in that the low-pressure side piston (2) moves in a low-pressure side bushing (5), the high-pressure side plunger (101) moves in a high-pressure side bushing (7), and the sealing structure comprises one or more of a guide rod bushing (13) arranged inside a small-aperture hollow structure or a Glare ring (14) arranged outside the high-pressure side plunger (101) arranged inside a large-aperture hollow structure.
5. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor is characterized in that when the guide rod bushing (13) is installed inside the sealing structure which is of a small-aperture hollow structure, the guide rod bushing (13) is installed on the outer side of the high-pressure side plunger (101), a gap is formed between the high-pressure side plunger (101) and the guide rod bushing (13), and a circular oil drainage channel (17) communicated with the large-aperture hollow structure is formed inside the high-pressure side cylinder body (6) below the guide rod bushing (13).
6. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor is characterized in that when the GREEN (14) is arranged on the outer side of the high-pressure side plunger (101) in the large-aperture hollow structure, the small-aperture hollow structure is communicated with the outer side of the high-pressure side plunger (101).
7. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor as claimed in claim 6, wherein a low-pressure side oil drainage cavity (18) is formed in the low-pressure side cylinder body (4), and a high-pressure side oil drainage cavity (19) is formed in the high-pressure side cylinder body (6).
8. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor is characterized in that the movable part further comprises a sliding shoe (8), a sliding shoe gland (9), a sliding shoe cushion block (10), a Glare ring (14) and a guide belt (15), the sliding shoe cushion block (10) is installed in the low-pressure side piston (2) in an interference fit mode, the sliding shoe (8) is installed in the sliding shoe cushion block (10), a gap for the sliding shoe (8) to slide in the sliding shoe cushion block (10) is arranged between the sliding shoe (8) and the sliding shoe cushion block (10), the ball head (3) is connected with one end of the high-pressure side plunger (101) through a screw, the ball head (3) is installed in the sliding shoe (8), and the sliding shoe gland (9) is connected with the low-pressure side piston (2) through a screw.
9. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor as claimed in claim 7, wherein the low-pressure side cylinder body (4) further comprises a check valve (12) with a guide rod installed inside the low-pressure side piston (2), the check valve (12) with the guide rod comprises a valve cover (21), a valve bonnet (22), a spring (23), a valve seat (24), a valve core (25), a push rod (26), a guide bushing (27) and a cushion block (20), and the cushion block (20) is installed on the high-pressure side cylinder body (6).
10. The novel high-frequency reversing decompression cylinder for the split type liquid-driven diaphragm compressor is characterized in that the valve cover (21), the valve cover (22) and the valve seat (24) are fixedly connected to form a shell structure of a one-way valve, the spring (23) is installed inside the valve seat (24), one end of the spring (23) is abutted to one side of the inside of the valve seat (24), the other end of the spring (23) is connected with the valve core (25), the other end of the valve core (25) is connected with the ejector rod (26), and a guide bushing (27) is installed on one side of the outside of the ejector rod (26) and the inside of the valve seat (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211485108.5A CN115962185A (en) | 2022-11-24 | 2022-11-24 | Novel split type high-frequency reversing decompression cylinder for hydraulic drive diaphragm compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211485108.5A CN115962185A (en) | 2022-11-24 | 2022-11-24 | Novel split type high-frequency reversing decompression cylinder for hydraulic drive diaphragm compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117489573A (en) * | 2024-01-02 | 2024-02-02 | 上海羿弓氢能科技有限公司 | Oil side membrane head device and diaphragm type compressor |
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| CN117489573B (en) * | 2024-01-02 | 2024-04-05 | 上海羿弓氢能科技有限公司 | Oil side membrane head device and diaphragm type compressor |
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