CN113757090A - Novel high-pressure diaphragm compressor - Google Patents
Novel high-pressure diaphragm compressor Download PDFInfo
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- CN113757090A CN113757090A CN202111151215.XA CN202111151215A CN113757090A CN 113757090 A CN113757090 A CN 113757090A CN 202111151215 A CN202111151215 A CN 202111151215A CN 113757090 A CN113757090 A CN 113757090A
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- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/053—Pumps having fluid drive
- F04B45/0536—Pumps having fluid drive the actuating fluid being controlled by one or more valves
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- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
Abstract
The invention relates to a novel high-pressure diaphragm compressor, which comprises a diaphragm head, a hydraulic pump, a reversing valve and a pressure cylinder, wherein the diaphragm head is connected with the hydraulic pump; the reversing valve is communicated with an oil outlet and an oil inlet of the hydraulic pump through a first oil path and a second oil path and communicated with the membrane head through a third oil path, and the third oil path is alternatively communicated with the first oil path and the second oil path through the reversing valve; the diaphragm head comprises a cylinder body, a cylinder cover and a diaphragm, the cylinder body is connected with the cylinder cover, the cylinder cover is provided with a gas circuit, the diaphragm is arranged in a cavity between the cylinder body and the cylinder cover, the cavity is divided into a gas cavity and an oil cavity, and the gas cavity is communicated with the gas circuit on the cylinder cover; the pressure cylinder is arranged in the cylinder body, the high-pressure side of the pressure cylinder is connected with the oil cavity, and the low-pressure side of the pressure cylinder is communicated with the third oil way. Compared with the prior art, the invention carries out pressurization through the pressurization cylinder, can use a hydraulic pump with lower pressure, realizes higher gas compression pressure, greatly reduces the requirement on the hydraulic pump, and enables a high-pressure diaphragm compressor driven by the hydraulic pump to be realized.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a novel high-pressure diaphragm type compressor.
Background
A diaphragm compressor is a reciprocating displacement compressor that completely isolates a hydraulic oil system from a gas compression system by a diaphragm. The gas compression system in the film cavity is completely sealed with the outside, and no leakage and no pollution of gas are ensured in the gas compression process.
The working principle of the traditional diaphragm type compressor is as follows: the motor drives the crankshaft connecting rod to drive the piston to reciprocate so as to realize pressurization and pressure relief of hydraulic oil, and then the hydraulic oil pushes the diaphragm to realize compression and discharge of gas. The working principle and structure of the traditional diaphragm compressor determine that a relatively complex mechanical transmission part and a piston assembly are required to be arranged, the problems of abrasion and aging of the mechanical transmission part and service life are difficult to solve, the whole machine occupies large space, the weight is large, and the arrangement mode is inflexible.
In order to solve the problems of the traditional compressor, a novel diaphragm compressor driven by a hydraulic pump appears in recent years, such as the diaphragm compressor disclosed in chinese patent CN201921894163.3, the structure is simple and compact, and the service life is longer. The principle of a diaphragm compressor driven by a hydraulic pump is that the hydraulic pump drives a diaphragm to compress a gas. However, the diaphragm compressor driven by the hydraulic pump has technical difficulties, and the gas compression pressure is limited by the pressure which can be provided by the hydraulic pump. The hydraulic pump can generally be realized to provide a maximum pressure of about 40MPa, but the high-pressure diaphragm compressor requires a gas compression pressure of not less than 90 MPa. A high-pressure diaphragm compressor driven by a hydraulic pump is difficult to achieve without such a high-pressure, large-displacement hydraulic pump.
Disclosure of Invention
The present invention is directed to a novel high pressure diaphragm compressor for overcoming the above-mentioned disadvantages of the prior art.
The purpose of the invention can be realized by the following technical scheme:
a novel high-pressure diaphragm compressor comprises a diaphragm head, a hydraulic pump, a reversing valve and a pressure cylinder;
the reversing valve is communicated with an oil outlet of the hydraulic pump through a first oil path, is communicated with an oil inlet of the hydraulic pump through a second oil path, is communicated with the membrane head through a third oil path, and the third oil path is alternately communicated with the first oil path and the second oil path under the action of the reversing valve;
the diaphragm head comprises a cylinder body, a cylinder cover and a diaphragm, wherein a first end of the cylinder body is communicated with a third oil way, a second end of the cylinder body is connected with the cylinder cover, an air passage is arranged on the cylinder cover, the diaphragm is arranged in a cavity between the cylinder body and the cylinder cover and divides the cavity into an air cavity and an oil cavity, and the air cavity is communicated with the air passage on the cylinder cover;
the pressure cylinder is detachably mounted in the cylinder body, the high-pressure side of the pressure cylinder is connected with the oil cavity, and the low-pressure side of the pressure cylinder is communicated with the third oil way.
Preferably, the number of the membrane heads is 2, the number of the third oil paths is 2, the two membrane heads are internally provided with a pressure cylinder, the two third oil paths are respectively communicated with the two membrane heads, and under the action of the reversing valve, when one third oil path is communicated with the first oil path, the other third oil path is communicated with the second oil path.
Preferably, the air passage includes an exhaust passage and an air suction passage, the exhaust passage discharges compressed air when the diaphragm moves from the oil chamber to the air chamber, and the air suction passage sucks air when the diaphragm moves from the air chamber to the oil chamber.
Preferably, the number of the membrane heads is 2, the membrane heads are respectively a first membrane head and a second membrane head, the number of the third oil paths is 2, a booster cylinder is installed in the first membrane head, the booster cylinder is not installed in the second membrane head, the two third oil paths are respectively communicated with the two membrane heads, an exhaust channel of the second membrane head is connected to an air suction channel of the first membrane head, and under the action of a reversing valve, when one third oil path is communicated with the first oil path, the other third oil path is communicated with the second oil path.
Preferably, the number of the membrane heads is 2, the membrane heads are respectively a first membrane head and a second membrane head, the number of the third oil paths is 2, the pressure cylinders are respectively arranged in the first membrane head and the second membrane head, the two third oil paths are respectively communicated with the two membrane heads, the exhaust passage of the second membrane head is connected to the air suction passage of the first membrane head, and under the action of the reversing valve, when one third oil path is communicated with the first oil path, the other third oil path is communicated with the second oil path.
Preferably, the system also comprises a first oil supplementing branch, a second oil supplementing branch and an oil tank, wherein a first oil supplementing pump, a first oil supplementing one-way valve, a first oil supplementing energy accumulator and a first oil supplementing overflow valve are arranged on the first oil supplementing branch; and a second oil supplementing pump, a second oil supplementing one-way valve, a second oil supplementing energy accumulator and a second oil supplementing overflow valve are arranged on the second oil supplementing branch, an oil inlet of the second oil supplementing pump is communicated with the oil tank, and an oil outlet of the second oil supplementing pump is connected to the high-pressure side of the pressure cylinder through the second oil supplementing one-way valve.
Preferably, still include the filter, the filter is arranged between the oil tank and the oil feed end of mend oily system, can filter the impurity in the hydraulic oil, and then prolongs novel high pressure diaphragm compressor's life.
Preferably, an overflow branch is arranged on the first oil path, and an overflow valve is arranged on the overflow branch.
Preferably, the pressure cylinder is a pressure cylinder with the piston action frequency not lower than 5 Hz.
Preferably, the hydraulic pump further comprises a motor, and an output shaft of the motor is in transmission connection with the hydraulic pump.
Preferably, the oil outlet and/or the oil inlet of the hydraulic pump are/is provided with a one-way valve, and the one-way valve can ensure the correct flow direction of the hydraulic oil and prevent the backflow of the high-pressure hydraulic oil.
The working principle of the invention is as follows: when the reversing valve controls the third oil way to be communicated with the first oil way, the hydraulic pump pumps hydraulic oil to the membrane head, the hydraulic oil enters the low-pressure side of the pressure cylinder after entering the membrane head through the third oil way and pushes the piston of the pressure cylinder to move, so that the high-pressure side of the pressure cylinder generates high pressure, the membrane in the membrane head is pushed to move to the air cavity, the air is compressed, and the compressed air is discharged out of the membrane head through the exhaust channel;
when the reversing valve controls the third oil way to be communicated with the second oil way, the diaphragm in the diaphragm head moves towards the oil cavity due to gas pressure, so that hydraulic oil on the high-pressure side of the pressure cylinder is driven to push a piston of the pressure cylinder to move towards the low-pressure side of the pressure cylinder, the hydraulic oil on the low-pressure side of the pressure cylinder flows through the reversing valve and the second oil way to enter an oil inlet of the hydraulic pump through the third oil way, and along with the discharge of the hydraulic oil in the oil cavity in the diaphragm head, gas enters the diaphragm head through a gas suction channel to realize gas suction;
the reversing valve enables the third oil way to be alternately communicated with the first oil way and the second oil way, and the membrane head alternately sucks and exhausts air.
Compared with the prior art, the invention has the following beneficial effects:
(1) the pressure cylinder is installed in the cylinder body of the membrane head, the pressure is increased through the pressure cylinder, the hydraulic pump with lower pressure can be used, higher gas compression pressure is achieved, and for the high-pressure diaphragm type compressor, the requirements for the hydraulic pump can be greatly reduced, so that the high-pressure diaphragm type compressor driven by the hydraulic pump can be achieved.
(2) The reversing valve is communicated with an oil outlet of the hydraulic pump through the first oil way, is communicated with an oil inlet of the hydraulic pump through the second oil way, and is communicated with the membrane head through the third oil way, and the third oil way is alternately communicated with the first oil way and the second oil way under the action of the reversing valve, so that the membrane head alternately performs air suction and air exhaust. This application replaces complicated transmission part and piston assembly such as bent axle, connecting rod, crosshead in the current diaphragm compressor through using hydraulic pump and switching-over valve, and simple structure is compact, has avoided the wearing and tearing of mechanical transmission part, piston ring etc. has prolonged high pressure diaphragm compressor's life, has also avoided design difficult problems such as bent axle bearing seal, piston seal.
(3) The cascade membrane heads are designed, the exhaust channel of one membrane head is connected to the suction channel of the other membrane head, so that multistage compression of gas is realized, the requirements of the high-pressure diaphragm type compressor on a hydraulic pump can be further reduced, and the compression grade can be flexibly adjusted.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the system of the present invention, illustrating two independent membrane heads;
FIG. 3 is a schematic diagram of the system of the present invention, taking two cascaded membrane heads as an example;
reference numerals: 10. the hydraulic control system comprises a membrane head, a membrane head 10a, a first membrane head 10b, a second membrane head, 11, a cylinder body, 12, a cylinder cover, 13, a membrane, 14, an exhaust channel, 15, an air suction channel, 20, a hydraulic pump, 21, an oil outlet of the hydraulic pump, 22, an oil inlet of the hydraulic pump, 30, a reversing valve, 40, a pressure cylinder, 41, a high-pressure side of the pressure cylinder, 42, a low-pressure side of the pressure cylinder, 51, a first oil supplementing pump, 52, a first oil supplementing one-way valve, 53, a first oil supplementing accumulator, 54, a first oil supplementing overflow valve, 61, a second oil supplementing pump, 62, a second oil supplementing one-way valve, 63, a second oil supplementing accumulator, 64, a second oil supplementing overflow valve, 70, an oil tank, 71, a filter, 80a, a first oil path, 80a-1, an overflow valve, 80b, a second oil path, 80c and a third oil path.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. In the drawings, components have been enlarged where appropriate to make the drawings clearer.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1:
a novel high-pressure diaphragm compressor is shown in figure 1 and comprises a diaphragm head 10, a hydraulic pump 20, a reversing valve 30 and a pressure cylinder 40;
the reversing valve 30 is communicated with an oil outlet 21 of the hydraulic pump 20 through a first oil path 80a, is communicated with an oil inlet 22 of the hydraulic pump 20 through a second oil path 80b, is communicated with the membrane head 10 through a third oil path 80c, the third oil path 80c is alternately communicated with the first oil path 80a and the second oil path 80b under the action of the reversing valve 30, and the reversing valve 30 can be an electromagnetic valve;
the membrane head 10 comprises a cylinder body 11, a cylinder cover 12 and a membrane 13, wherein a first end of the cylinder body 11 is communicated with a third oil way 80c, a second end of the cylinder body 11 is connected with the cylinder cover 12, an air passage is arranged on the cylinder cover 12, the membrane 13 is arranged in a cavity between the cylinder body 11 and the cylinder cover 12 and divides the cavity into an air cavity and an oil cavity, and the air cavity is communicated with the air passage on the cylinder cover 12;
the pressure-increasing cylinder 40 is installed in the cylinder block 11, the high-pressure side 41 of the pressure-increasing cylinder 40 is connected to the oil chamber, and the low-pressure side 42 of the pressure-increasing cylinder 40 communicates with the third oil passage 80 c. The pressure cylinder 40 is an actuator for converting input low-pressure oil into high-pressure oil or ultrahigh-pressure oil by using unequal piston action areas of two cavities. The frequency of the piston operation of the pressure cylinder 40 affects the performance of the diaphragm compressor, and a pressure cylinder with a high frequency is preferable, and in the present embodiment, the frequency of the piston operation of the pressure cylinder 40 is not less than 5 Hz.
The air passage in the cylinder head 12 includes an exhaust passage 14 and an intake passage 15, the exhaust passage 14 discharging compressed air when the diaphragm 13 moves from the oil chamber to the gas chamber, and the intake passage 15 sucking air when the diaphragm 13 moves from the gas chamber to the oil chamber. The diaphragm 13 of the diaphragm compressor is matched with the exhaust passage 14 and the suction passage 15, which are not described in detail herein for the prior art and can be understood by practitioners.
In this embodiment, the number of the membrane heads 10 is 1, and the working principle is as follows:
when the reversing valve 30 controls the third oil path 80c to be communicated with the first oil path 80a, the hydraulic pump 20 pumps hydraulic oil to the membrane head 10, the hydraulic oil enters the low-pressure side 42 of the pressure cylinder 40 after entering the membrane head 10 through the third oil path 80c, and pushes the piston of the pressure cylinder 40 to move, so that the high-pressure side 41 of the pressure cylinder 40 generates high pressure, meanwhile, the diaphragm 13 in the membrane head 10 is pushed to compress gas, and the compressed gas is discharged out of the membrane head 10 through the exhaust channel 14;
when the reversing valve 30 controls the third oil path 80c to be communicated with the second oil path 80b, the diaphragm 13 in the diaphragm head 10 moves towards the oil cavity due to gas pressure, so that hydraulic oil on the high-pressure side 41 of the pressure cylinder is driven to push the piston of the pressure cylinder 40 to move towards the low-pressure side 42 of the pressure cylinder, the hydraulic oil on the low-pressure side 42 of the pressure cylinder passes through the third oil path 80c, flows through the reversing valve 30 and the second oil path 80b to enter the oil inlet 22 of the hydraulic pump 20, and along with the discharge of the hydraulic oil in the oil cavity in the diaphragm head 10, gas enters the diaphragm head 10 through the air suction channel 15 to realize air suction;
the direction change valve 30 alternately connects the third oil passage 80c to the first oil passage 80a and the second oil passage 80b, and alternately sucks and discharges the gas from the membrane head 10.
In other embodiments, 2 or more membrane heads 10 may be further provided, and a pressure cylinder 40 may be installed in each membrane head 10 as needed, and as special needs exist in practical engineering, a certain membrane head may not be installed with a pressure cylinder 40, a plurality of third oil paths 80c are correspondingly provided, and a corresponding reversing valve 30 with a corresponding interface may be correspondingly used, and oil paths are switched through the reversing valve 30, so that for each membrane head 10, the membrane head 10 may be alternately communicated with the first oil path 80a and the second oil path 80b through the third oil paths 80 c.
In addition, an overflow branch can be further arranged on the first oil path 80a, an overflow valve 80a-1 is arranged on the overflow branch, when the oil pressure of the hydraulic oil flowing out of the oil outlet 21 of the hydraulic pump 20 is greater than the overflow threshold value of the overflow valve 80a-1, the hydraulic oil will push the overflow valve 80a-1 open, and part of the hydraulic oil flows out, so that ultrahigh pressure protection is performed on the novel high-pressure diaphragm compressor, and leakage or pipeline breakage caused by overhigh oil pressure is prevented.
One-way valves can be further disposed at the oil outlet 21 and/or the oil inlet 22 of the hydraulic pump 20, and the one-way valves can ensure the correct flow direction of the hydraulic oil and prevent the backflow of the high-pressure hydraulic oil.
A novel high-pressure diaphragm compressor is shown in figures 2 and 3, and further comprises an oil supplementing system and an oil tank 70, wherein an oil inlet end of the oil supplementing system is communicated with the oil tank 70, an oil outlet end of the oil supplementing system is connected to an oil inlet 22 of a hydraulic pump 20 and a high-pressure side 41 of a pressure cylinder 40, and the oil tank 70 and the oil supplementing system are used for supplementing hydraulic oil to a loop of the hydraulic pump 20, a reversing valve 30, a membrane head 10 and the hydraulic pump 20.
The oil supplementing system comprises a first oil supplementing branch and a second oil supplementing branch, a first oil supplementing pump 51, a first oil supplementing check valve 52, a first oil supplementing energy accumulator 53 and a first oil supplementing overflow valve 54 are arranged on the first oil supplementing branch, an oil inlet of the first oil supplementing pump 51 is communicated with the oil tank 70, an oil outlet of the first oil supplementing pump 51 is connected to an oil inlet 22 of the hydraulic pump 20 through the first oil supplementing check valve 52, the first oil supplementing check valve 52 can ensure the correct flow direction of hydraulic oil and prevent the backflow of high-pressure hydraulic oil, and the first oil supplementing energy accumulator 53 and the first oil supplementing overflow valve 54 are used for ensuring oil supplementing pressure;
and a second oil supplementing pump 61, a second oil supplementing one-way valve 62, a second oil supplementing energy accumulator 63 and a second oil supplementing overflow valve 64 are arranged on the second oil supplementing branch, an oil inlet of the second oil supplementing pump 61 is communicated with an oil tank, an oil outlet of the second oil supplementing pump 61 is connected to the high-pressure side 41 of the pressure cylinder 40 through the second oil supplementing one-way valve 62, the second oil supplementing one-way valve 62 can guarantee the correct flow direction of hydraulic oil, the backflow of the high-pressure hydraulic oil is prevented, and the second oil supplementing energy accumulator 63 and the second oil supplementing overflow valve 64 are used for guaranteeing the oil supplementing pressure.
When the number of the membrane heads 10 mounted with the pressurizing cylinders 40 is plural, the second oil-replenishing branch may be provided in plural, respectively connected to the high-pressure sides 41 of the pressurizing cylinders 40 of the respective membrane heads 10.
A novel high-pressure diaphragm type compressor is shown in figures 2 and 3 and further comprises a filter 71, wherein the filter 71 is arranged between an oil tank 70 and an oil inlet end of an oil supplementing system, impurities in hydraulic oil can be filtered, and the service life of the novel high-pressure diaphragm type compressor is prolonged.
The utility model provides a novel high pressure diaphragm compressor, still includes the motor, and the output shaft and the hydraulic pump 20 transmission of motor are connected, are equipped with the flywheel on the output shaft of motor, and the flywheel has great inertia of rotation to the rotation of the output shaft that makes the motor is more stable, and motor drive hydraulic pump 20's structure is prior art, and relevant practitioner can understand, no longer gives unnecessary details here.
Example 2:
in this embodiment, as shown in fig. 2, the number of the membrane heads 10 is 2, the number of the third oil paths 80c is 2, the two membrane heads 10 are each provided with a pressure cylinder therein, the two third oil paths 80c are respectively communicated with the two membrane heads 10, and under the action of the reversing valve 30, when one third oil path 80c is communicated with the first oil path 80a, the other third oil path 80c is communicated with the second oil path 80 b.
When one membrane head 10 is communicated with the first oil path 80a through the third oil path 80c, the other membrane head 10 is communicated with the second oil path 80b through the other third oil path 80c, so that when the membrane head 10 communicated with the first oil path 80a exhausts air, the membrane head 10 communicated with the second oil path 80b sucks air; next, the selector valve 30 switches the oil passages such that one of the film heads 10 communicates with the second oil passage 80b through the third oil passage 80c, and the other film head 10 communicates with the first oil passage 80a through the third oil passage 80 c. This allows the two film heads 10 to operate simultaneously, one film head 10 sucks air, the other film head 10 exhausts air, and the suction and exhaust of each film head 10 are alternately performed.
As shown in fig. 2, in order to fit the two membrane heads 10, the second oil supply branch is branched into two, and is connected to the high pressure side 41 of the booster cylinders 40 of the two membrane heads 10, respectively.
Example 3:
in this embodiment, the number of the membrane heads 10 is 2, which is referred to as a first membrane head 10a and a second membrane head 10b, the number of the third oil paths 80c is 2, the pressure cylinder 40 is installed in the first membrane head 10a, the pressure cylinder 40 is not installed in the second membrane head 10b, the two third oil paths 80c are respectively communicated with the two membrane heads 10, as shown in fig. 3, the exhaust passage 14 of the membrane head 10 of the second membrane head 10b is connected to the suction passage 15 of the first membrane head 10a, and when one third oil path 80c is communicated with the first oil path 80a under the action of the reversing valve 30, the other third oil path 80c is communicated with the second oil path 80 b. As shown in fig. 3, in order to fit two membrane heads 10, since the pressure cylinder 40 is not installed in the second membrane head 10b, the second oil-replenishing branch is connected to the high-pressure side 41 of the pressure cylinder 40 of the first membrane head 10 a.
When the second film head 10b is communicated with the first oil path 80a through one third oil path 80c, the first film head 10a is communicated with the second oil path 80b through the other third oil path 80c, the second film head 10b exhausts air, the first film head 10a sucks air, and thus the air compressed by the second film head 10b is sent to the first film head 10 a; next, the change valve 30 switches the oil paths so that the second film head 10b communicates with the second oil path 80b through the third oil path 80c, the first film head 10a communicates with the first oil path 80a through the third oil path 80c, the second film head 10b sucks air, the first film head 10a exhausts air, and the air after two-stage compression is discharged from the exhaust passage 14 of the first film head 10 a.
Two-stage compression of gas is realized by cascading the first membrane head 10a and the second membrane head 10b, the two membrane heads 10 work simultaneously, when one membrane head 10 inhales, the other membrane head 10 exhausts, and the inhaling and exhausting of each membrane head 10 are alternately performed, and the compressed gas exhausted by the second membrane head 10b is inhaled into the first membrane head 10a and compressed again.
Since the pressure of the gas compressed in the first stage tends to be low in the two-stage compression, the second diaphragm head 10b may not be provided with the pressure-increasing cylinder 40; the pressure of the gas compressed in the second stage tends to be high, and therefore the first diaphragm head 10a needs to be equipped with the pressure-increasing cylinder 40 to obtain a hydraulic pressure that meets the requirements. In other embodiments, the pressure cylinders 40 may be installed in both the first and second die heads 10a and 10b, as required.
Through the cascade mode, through gaseous multistage compression, can further reduce the requirement of high pressure diaphragm compressor to the hydraulic pump, can realize great gas pressure through simple hydraulic pump 20. In another embodiment, more than 2 membrane heads 10 can be cascaded, and the gas enters the suction channel 15 of another membrane head 10 from the exhaust channel 14 of one membrane head 10, and is compressed again, and then the suction channel 15 of the next membrane head 10 is performed again from the exhaust channel 14 of the membrane head 10, so that different compression levels can be flexibly realized.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A novel high-pressure diaphragm compressor is characterized by comprising a diaphragm head, a hydraulic pump, a reversing valve and a pressure cylinder;
the reversing valve is communicated with an oil outlet of the hydraulic pump through a first oil path, is communicated with an oil inlet of the hydraulic pump through a second oil path, is communicated with the membrane head through a third oil path, and the third oil path is alternately communicated with the first oil path and the second oil path under the action of the reversing valve;
the diaphragm head comprises a cylinder body, a cylinder cover and a diaphragm, wherein a first end of the cylinder body is communicated with a third oil way, a second end of the cylinder body is connected with the cylinder cover, an air passage is arranged on the cylinder cover, the diaphragm is arranged in a cavity between the cylinder body and the cylinder cover and divides the cavity into an air cavity and an oil cavity, and the air cavity is communicated with the air passage on the cylinder cover;
the pressure cylinder is arranged in the cylinder body, the high-pressure side of the pressure cylinder is connected with the oil cavity, and the low-pressure side of the pressure cylinder is communicated with the third oil way.
2. The novel high-pressure diaphragm compressor according to claim 1, wherein the number of the diaphragm heads is 2, the number of the third oil paths is 2, the two diaphragm heads are provided with the pressure cylinders, the two third oil paths are respectively communicated with the two diaphragm heads, and one third oil path is communicated with the first oil path and the other third oil path is communicated with the second oil path when the third oil path is communicated with the first oil path under the action of the reversing valve.
3. The novel high-pressure diaphragm compressor of claim 1, wherein the air passage comprises an exhaust passage and an intake passage, wherein the exhaust passage exhausts compressed air when the diaphragm moves from the oil chamber to the air chamber, and the intake passage sucks air when the diaphragm moves from the air chamber to the oil chamber.
4. A novel high-pressure diaphragm compressor according to claim 3, wherein the number of the diaphragm heads is 2, and the first diaphragm head and the second diaphragm head are respectively provided, the number of the third oil paths is 2, the first diaphragm head is provided with a booster cylinder, the second diaphragm head is not provided with a booster cylinder, the two third oil paths are respectively communicated with the two diaphragm heads, the exhaust passage of the second diaphragm head is connected to the suction passage of the first diaphragm head, and under the action of the reversing valve, when one third oil path is communicated with the first oil path, the other third oil path is communicated with the second oil path.
5. A novel high-pressure diaphragm compressor according to claim 3, wherein the number of the diaphragm heads is 2, and the first diaphragm head and the second diaphragm head are respectively provided, the number of the third oil paths is 2, the first diaphragm head and the second diaphragm head are respectively provided with a booster cylinder, the two third oil paths are respectively communicated with the two diaphragm heads, the exhaust passage of the second diaphragm head is connected to the suction passage of the first diaphragm head, and under the action of the reversing valve, when one third oil path is communicated with the first oil path, the other third oil path is communicated with the second oil path.
6. The novel high-pressure diaphragm compressor according to claim 1, further comprising a first oil supplementing branch, a second oil supplementing branch and an oil tank, wherein the first oil supplementing branch is provided with a first oil supplementing pump, a first oil supplementing check valve, a first oil supplementing accumulator and a first oil supplementing overflow valve, an oil inlet of the first oil supplementing pump is communicated with the oil tank, and an oil outlet of the first oil supplementing pump is connected to an oil inlet of the hydraulic pump through the first oil supplementing check valve; and a second oil supplementing pump, a second oil supplementing one-way valve, a second oil supplementing energy accumulator and a second oil supplementing overflow valve are arranged on the second oil supplementing branch, an oil inlet of the second oil supplementing pump is communicated with the oil tank, and an oil outlet of the second oil supplementing pump is connected to the high-pressure side of the pressure cylinder through the second oil supplementing one-way valve.
7. The novel high-pressure diaphragm compressor of claim 1, further comprising a filter disposed between the oil tank and the oil inlets of the first and second oil replenishment pumps.
8. The novel high-pressure diaphragm compressor according to claim 1, wherein an overflow branch is provided on the first oil passage, and an overflow valve is provided on the overflow branch.
9. A novel high-pressure diaphragm compressor according to claim 1 wherein said booster cylinder is a booster cylinder having a frequency of piston action of not less than 5 Hz.
10. The novel high-pressure diaphragm compressor of claim 1, wherein the oil outlet and/or the oil inlet of the hydraulic pump is provided with a check valve.
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| CN202111151215.XA CN113757090A (en) | 2021-09-29 | 2021-09-29 | Novel high-pressure diaphragm compressor |
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| CN202111151215.XA CN113757090A (en) | 2021-09-29 | 2021-09-29 | Novel high-pressure diaphragm compressor |
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| CN202111151215.XA Pending CN113757090A (en) | 2021-09-29 | 2021-09-29 | Novel high-pressure diaphragm compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215724A (en) * | 2021-12-28 | 2022-03-22 | 苏州强硕科技装备制造有限公司 | Two-stage compression diaphragm compressor structure |
| CN114688003A (en) * | 2022-02-22 | 2022-07-01 | 西安交通大学 | High-pressure diaphragm compressor |
| CN115405505A (en) * | 2022-09-28 | 2022-11-29 | 上海羿弓氢能科技有限公司 | Liquid-driven diaphragm type hydrogen filling compressor |
| CN117489572A (en) * | 2023-12-28 | 2024-02-02 | 上海羿弓氢能科技有限公司 | Hydraulic diaphragm compressor system |
| CN117489574A (en) * | 2024-01-02 | 2024-02-02 | 上海羿弓氢能科技有限公司 | Head assembly and liquid drive diaphragm type compressor |
| 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 |
-
2021
- 2021-09-29 CN CN202111151215.XA patent/CN113757090A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215724A (en) * | 2021-12-28 | 2022-03-22 | 苏州强硕科技装备制造有限公司 | Two-stage compression diaphragm compressor structure |
| CN114688003A (en) * | 2022-02-22 | 2022-07-01 | 西安交通大学 | High-pressure diaphragm compressor |
| CN114688003B (en) * | 2022-02-22 | 2023-01-24 | 西安交通大学 | High-pressure diaphragm compressor |
| CN115405505A (en) * | 2022-09-28 | 2022-11-29 | 上海羿弓氢能科技有限公司 | Liquid-driven diaphragm type hydrogen filling compressor |
| CN117489572A (en) * | 2023-12-28 | 2024-02-02 | 上海羿弓氢能科技有限公司 | Hydraulic diaphragm compressor system |
| CN117489572B (en) * | 2023-12-28 | 2024-03-01 | 上海羿弓氢能科技有限公司 | Hydraulic diaphragm compressor system |
| CN117489574A (en) * | 2024-01-02 | 2024-02-02 | 上海羿弓氢能科技有限公司 | Head assembly and liquid drive diaphragm type compressor |
| 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 |
| 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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