CN210599299U - Gas-liquid mixed transportation booster station - Google Patents

Gas-liquid mixed transportation booster station Download PDF

Info

Publication number
CN210599299U
CN210599299U CN201921274377.0U CN201921274377U CN210599299U CN 210599299 U CN210599299 U CN 210599299U CN 201921274377 U CN201921274377 U CN 201921274377U CN 210599299 U CN210599299 U CN 210599299U
Authority
CN
China
Prior art keywords
gas
liquid
pneumatic
hydraulic
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201921274377.0U
Other languages
Chinese (zh)
Inventor
王荣强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bengbu Rongqiang Compressor Manufacturing Co ltd
Original Assignee
Bengbu Rongqiang Compressor Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bengbu Rongqiang Compressor Manufacturing Co ltd filed Critical Bengbu Rongqiang Compressor Manufacturing Co ltd
Priority to CN201921274377.0U priority Critical patent/CN210599299U/en
Application granted granted Critical
Publication of CN210599299U publication Critical patent/CN210599299U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

The utility model discloses a gas-liquid thoughtlessly defeated booster station, including the booster compressor, wherein: the supercharger comprises a hydraulic cylinder, a first pneumatic-hydraulic cylinder, a hydraulic system and a second pneumatic-hydraulic cylinder, wherein the first pneumatic-hydraulic cylinder and the second pneumatic-hydraulic cylinder are respectively arranged at two ends of the hydraulic cylinder and are communicated with the hydraulic cylinder; be equipped with hydraulic piston in the pneumatic cylinder, hydraulic system and pneumatic cylinder intercommunication are used for driving hydraulic piston and move, are equipped with first pneumatic-hydraulic piston and second pneumatic-hydraulic piston in first pneumatic-hydraulic cylinder and the second pneumatic-hydraulic cylinder respectively, and first pneumatic-hydraulic piston and second pneumatic-hydraulic piston are connected with hydraulic piston respectively. The utility model provides a gas-liquid mixed transportation booster station, which is used for transporting crude oil and associated gas produced by oil well exploitation to the downstream by using the original oil pipeline; the working efficiency is high, the vibration is small, the starting is carried out at any time, the equipment is started and stopped at any time, the natural gas is not required to be emptied, and the running cost is reduced.

Description

Gas-liquid mixed transportation booster station
Technical Field
The utility model relates to a gas field supercharging equipment technical field especially relates to a gas-liquid is defeated pressure boost station thoughtlessly.
Background
The traditional mechanical reciprocating compressor adopts a crank connecting rod mechanism, a crank drives a piston to run at a high speed, a filler is arranged in the machine body, a piston ring must have a gap, and the filler is sealed to prevent gas in a cylinder from leaking outwards along the gap between the cylinder and the outer surface of a moving piston rod, but natural gas leakage under a high-pressure state cannot be avoided. And when the conventional compressor is started for the second time, the high-pressure gas behind the compressor must be discharged, and the motor can drive the 'empty' load compressor to start, so that the compressor is very inconvenient. If a malfunction occurs, the motor may be burned.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides a gas-liquid thoughtlessly defeated booster station.
The utility model provides a gas-liquid thoughtlessly defeated booster station, including the booster compressor, wherein:
the supercharger comprises a hydraulic cylinder, a first pneumatic-hydraulic cylinder, a hydraulic system and a second pneumatic-hydraulic cylinder, wherein the first pneumatic-hydraulic cylinder and the second pneumatic-hydraulic cylinder are respectively arranged at two ends of the hydraulic cylinder and are communicated with the hydraulic cylinder;
be equipped with hydraulic piston in the pneumatic cylinder, hydraulic system and pneumatic cylinder intercommunication are used for driving hydraulic piston and move, are equipped with first pneumatic-hydraulic piston and second pneumatic-hydraulic piston in first pneumatic-hydraulic cylinder and the second pneumatic-hydraulic cylinder respectively, and first pneumatic-hydraulic piston and second pneumatic-hydraulic piston are connected with hydraulic piston respectively.
As a further optimized proposal of the utility model, a first air inlet one-way valve and a second air inlet one-way valve are respectively arranged on the first air inlet pipe and the second air inlet pipe; and the second exhaust pipe are respectively provided with a first exhaust one-way valve and a second exhaust one-way valve.
As a further optimized scheme of the present invention, when the hydraulic piston drives the first gas-liquid piston and the second gas-liquid piston to move toward the first gas-liquid cylinder, the second gas inlet check valve is opened, the first gas inlet check valve and the second gas exhaust check valve are closed, and the first gas exhaust check valve is opened when the pressure in the first gas-liquid cylinder reaches a certain value;
when the hydraulic piston drives the first gas-liquid piston and the second gas-liquid piston to move towards the second gas-liquid cylinder, the first gas inlet one-way valve is opened, the second gas inlet one-way valve and the first gas exhaust one-way valve are closed, and the second gas exhaust one-way valve is opened when the pressure in the second gas-liquid cylinder reaches a certain value.
As the utility model discloses the scheme of further optimization, hydraulic system includes oil pump motor, pipeline, oil tank and return oil filter, wherein:
the oil tank is communicated with the hydraulic cylinder through an oil pump motor and a pipeline, and the oil pump motor is used for conveying oil in the oil tank into the hydraulic cylinder;
the hydraulic cylinder is communicated with the oil tank through a pipeline and an oil return filter.
As a further optimized scheme of the utility model, be equipped with the oil cooler between pneumatic cylinder and the oil return filter.
As the utility model discloses the scheme of further optimization still includes leading buffer and rearmounted buffer, leading buffer and first intake pipe and second intake pipe intercommunication, rearmounted buffer and first blast pipe and second blast pipe intercommunication.
As the utility model discloses the scheme of further optimization still includes the desander, desander and leading buffer intercommunication for carry out the desanding to the gas-liquid of draining into leading buffer and handle.
As the utility model discloses the scheme of further optimization, the drain has all been opened to the below of first pneumatic-hydraulic cylinder and second pneumatic-hydraulic cylinder.
In the gas-liquid mixed transportation pressurizing station, crude oil and associated gas produced by oil well exploitation are conveyed to downstream by the device by utilizing the original oil conveying pipeline; on one hand, the hydraulic system is adopted to control the hydraulic plug, the first gas-liquid plug and the second gas-liquid plug to move, and the gas is compressed and pressurized by changing the continuous change of the gas volumes in the first gas-liquid cylinder and the second gas-liquid cylinder, so that the working efficiency is high, the vibration is small, the noise is low, and the compression ratio is large; on the other hand, the loads of the first pneumatic-hydraulic cylinder and the second pneumatic-hydraulic cylinder do not directly act on the motor, the motor is started at any time without unloading, and the equipment is started or stopped without emptying natural gas, so that resources are saved, and the running cost is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the structural schematic diagram of the supercharger of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
A gas-liquid mixture delivery booster station as shown in fig. 1-2, comprising a booster 25, wherein:
the supercharger 25 comprises a hydraulic cylinder 1, a first pneumatic-hydraulic cylinder 2, a hydraulic system and a second pneumatic-hydraulic cylinder 3, wherein the first pneumatic-hydraulic cylinder 2 and the second pneumatic-hydraulic cylinder 3 are respectively installed at two ends of the hydraulic cylinder 1 and are communicated with the hydraulic cylinder 1, the first pneumatic-hydraulic cylinder 2 is communicated with a first air inlet pipe 5 and a first exhaust pipe 6, and the second pneumatic-hydraulic cylinder 3 is communicated with a second air inlet pipe 7 and a second exhaust pipe 8;
a hydraulic piston 9 is arranged in the hydraulic cylinder 1, a hydraulic system is communicated with the hydraulic cylinder 1 and is used for driving the hydraulic piston 9 to move, a first gas-liquid piston 10 and a second gas-liquid piston 11 are respectively arranged in the first gas-liquid cylinder 2 and the second gas-liquid cylinder 3, and the first gas-liquid piston 10 and the second gas-liquid piston 11 are respectively connected with the hydraulic piston 9;
a first air inlet one-way valve 12 and a second air inlet one-way valve 13 are respectively arranged on the first air inlet pipe 5 and the second air inlet pipe 7; a first exhaust check valve 14 and a second exhaust check valve 15 are respectively arranged on the second exhaust pipe 8 and the second exhaust pipe 8;
when the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move towards the first gas-liquid cylinder 2, the second gas inlet one-way valve 13 is opened, the first gas inlet one-way valve 12 and the second gas exhaust one-way valve 15 are closed, and the first gas exhaust one-way valve 14 is opened when the pressure in the first gas-liquid cylinder 2 reaches a certain value;
when the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move towards the second gas-liquid cylinder 3, the first gas inlet one-way valve 12 is opened, the second gas inlet one-way valve 13 and the first gas exhaust one-way valve 14 are closed, and the second gas exhaust one-way valve 15 is opened when the pressure in the second gas-liquid cylinder 3 reaches a certain value;
the hydraulic system comprises an oil pump motor 16, a pipeline 17, an oil tank 18 and an oil return filter 19, wherein:
the oil tank 18 is communicated with the hydraulic cylinder 1 through an oil pump motor 16 and a pipeline 17, and the oil pump motor 16 is used for conveying oil in the oil tank 18 to the hydraulic cylinder 1;
the hydraulic cylinder 1 is communicated with an oil tank 18 through a pipeline 17 and an oil return filter 19;
an oil cooler 20 is arranged between the hydraulic cylinder 1 and the return oil filter 19;
the exhaust gas purification device further comprises a front buffer 21 and a rear buffer 22, wherein the front buffer 21 is communicated with the first air inlet pipe 5 and the second air inlet pipe 7, and the rear buffer 22 is communicated with the first exhaust pipe 6 and the second exhaust pipe 8;
the device also comprises a desander 23, wherein the desander 23 is communicated with the front buffer 21 and is used for desanding the gas-liquid discharged into the front buffer 21;
and drain outlets 24 are formed below the first pneumatic-hydraulic cylinder 2 and the second pneumatic-hydraulic cylinder 3.
In the working process of the embodiment, after raw material gas and liquid in a gas well are subjected to desanding treatment through a desander 23, a gas-liquid mixture enters a pre-buffer 21 for pressure stabilization, and then enters a first gas cylinder 2 or a second gas cylinder 3 through a first gas inlet pipe 5 and a second gas inlet pipe 7, a hydraulic piston 9 of a hydraulic system moves in a hydraulic cylinder 1, the hydraulic piston 9 simultaneously drives a first gas-liquid piston 10 and a second gas-liquid piston 11 to move in the first gas cylinder 2 and the second gas cylinder 3 in the moving process, when the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move towards the first gas cylinder 2, a second gas inlet check valve 13 is opened, a first gas inlet check valve 12 and a second gas outlet check valve 15 are closed, the gas-liquid mixture in the pre-buffer 21 enters the second gas cylinder 3 from the second gas inlet pipe 7, the pressure in the second gas cylinder 3 is reduced, pressure increases in the first pneumatic and hydraulic cylinder 2, and first exhaust check valve 14 opens when the pressure reaches a definite value in the first pneumatic and hydraulic cylinder 2, realizes discharging the gaseous discharge after the pressure boost to rearmounted buffer 22 in the first pneumatic and hydraulic cylinder 2, and the gaseous in rearmounted buffer 22 is carried to gas collection device again in, realizes discharging the liquid in first pneumatic and hydraulic cylinder 2 and the second pneumatic and hydraulic cylinder 3 through opening drain 24.
In the present embodiment, preferably, the first intake pipe 5 and the second intake pipe 7 are respectively provided with a first intake check valve 12 and a second intake check valve 13; a first exhaust check valve 14 and a second exhaust check valve 15 are respectively arranged on the second exhaust pipe 8 and the second exhaust pipe 8, so that the phenomenon of gas backflow in the process that the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move is avoided.
In the embodiment, preferably, when the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move towards the first gas-liquid cylinder 2, the second gas inlet check valve 13 is opened, the first gas inlet check valve 12 and the second gas outlet check valve 15 are closed, and the first gas outlet check valve 14 is opened when the pressure in the first gas-liquid cylinder 2 reaches a certain value;
when the hydraulic piston 9 drives the first gas-liquid piston 10 and the second gas-liquid piston 11 to move towards the second gas-liquid cylinder 3, the first gas inlet one-way valve 12 is opened, the second gas inlet one-way valve 13 and the first gas exhaust one-way valve 14 are closed, and the second gas exhaust one-way valve 15 is opened when the pressure in the second gas-liquid cylinder 3 reaches a certain value.
In the present embodiment, the hydraulic system preferably includes an oil pump motor 16, a pipeline 17, an oil tank 18, and an oil return filter 19, wherein:
the oil tank 18 is communicated with the hydraulic cylinder 1 through an oil pump motor 16 and a pipeline 17, and the oil pump motor 16 is used for conveying oil in the oil tank 18 to the hydraulic cylinder 1;
the hydraulic cylinder 1 is communicated with an oil tank 18 through a pipeline 17 and an oil return filter 19;
as shown in fig. 2, when the hydraulic piston 9 moves towards the second pneumatic/hydraulic cylinder 3, the oil pump motor is operated to make the oil in the mail box enter the hydraulic cylinder 1 to push the hydraulic piston 9 to move, and when the hydraulic piston 9 moves to a certain position, the hydraulic oil in the hydraulic cylinder 1 flows back to the oil tank through the oil return filter 19.
In this embodiment, an oil cooler 20 is preferably provided between the hydraulic cylinder 1 and the return oil filter 19 to cool the hydraulic oil in the hydraulic system.
In the present embodiment, preferably, the turbocharger further comprises a front buffer 21 and a rear buffer 22, the front buffer 21 is communicated with the first intake pipe 5 and the second intake pipe 7, the rear buffer 22 is communicated with the first exhaust pipe 6 and the second exhaust pipe 8, and the front buffer 21 and the rear buffer 22 realize buffering of gas entering the supercharger and gas exiting the supercharger.
In the embodiment, the pneumatic-hydraulic separation device preferably further comprises a desander 23, wherein the desander 23 is communicated with the pre-buffer 21 and is used for desanding the gas and liquid discharged into the pre-buffer 21, so that a gas and liquid mixture containing sand is prevented from entering the first pneumatic-hydraulic cylinder 2 and the second pneumatic-hydraulic cylinder 3, and the service life of the pneumatic-hydraulic separation device is prolonged.
In this embodiment, preferably, drain outlets 24 are formed below the first pneumatic/hydraulic cylinder 2 and the second pneumatic/hydraulic cylinder 3, so as to facilitate discharging of impurities such as liquid in the first pneumatic/hydraulic cylinder 2 and the second pneumatic/hydraulic cylinder 3.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. A gas-liquid mixture delivery booster station, characterized by comprising a booster (25), wherein:
the supercharger (25) comprises a hydraulic cylinder (1), a first pneumatic-hydraulic cylinder (2), a hydraulic system and a second pneumatic-hydraulic cylinder (3), the first pneumatic-hydraulic cylinder (2) and the second pneumatic-hydraulic cylinder (3) are respectively installed at two ends of the hydraulic cylinder (1) and are communicated with the hydraulic cylinder (1), the first pneumatic-hydraulic cylinder (2) is communicated with a first air inlet pipe (5) and a first exhaust pipe (6), and the second pneumatic-hydraulic cylinder (3) is communicated with a second air inlet pipe (7) and a second exhaust pipe (8);
be equipped with hydraulic piston (9) in pneumatic cylinder (1), hydraulic system and pneumatic cylinder (1) intercommunication are used for driving hydraulic piston (9) and move, are equipped with first gas-liquid piston (10) and second gas-liquid piston (11) respectively in first gas-liquid cylinder (2) and second gas-liquid cylinder (3), and first gas-liquid piston (10) and second gas-liquid piston (11) are connected with hydraulic piston (9) respectively.
2. The gas-liquid mixed transportation booster station according to claim 1, characterized in that the first inlet pipe (5) and the second inlet pipe (7) are respectively provided with a first inlet check valve (12) and a second inlet check valve (13); a first exhaust check valve (14) and a second exhaust check valve (15) are respectively arranged on the second exhaust pipe (8) and the second exhaust pipe (8).
3. The gas-liquid mixed transportation booster station according to claim 2, characterized in that when the hydraulic piston (9) drives the first gas-liquid piston (10) and the second gas-liquid piston (11) to move towards the first gas-liquid cylinder (2), the second gas inlet check valve (13) is opened, the first gas inlet check valve (12) and the second gas outlet check valve (15) are closed, and when the pressure in the first gas-liquid cylinder (2) reaches a certain value, the first gas outlet check valve (14) is opened;
when the hydraulic piston (9) drives the first gas-liquid piston (10) and the second gas-liquid piston (11) to move towards the second gas-liquid cylinder (3), the first gas inlet one-way valve (12) is opened, the second gas inlet one-way valve (13) and the first gas exhaust one-way valve (14) are closed, and the second gas exhaust one-way valve (15) is opened when the pressure in the second gas-liquid cylinder (3) reaches a certain value.
4. The gas-liquid mixed transportation booster station according to claim 1, wherein the hydraulic system comprises an oil pump motor (16), a pipeline (17), an oil tank (18) and an oil return filter (19), wherein:
the oil tank (18) is communicated with the hydraulic cylinder (1) through an oil pump motor (16) and a pipeline (17), and the oil pump motor (16) is used for conveying oil in the oil tank (18) to the hydraulic cylinder (1);
the hydraulic cylinder (1) is communicated with an oil tank (18) through a pipeline (17) and an oil return filter (19).
5. The gas-liquid mixture delivery booster station according to claim 4, characterized in that an oil cooler (20) is provided between the hydraulic cylinder (1) and the return oil filter (19).
6. The gas-liquid mixed transportation booster station according to claim 1, further comprising a pre-buffer (21) and a post-buffer (22), wherein the pre-buffer (21) is communicated with the first gas inlet pipe (5) and the second gas inlet pipe (7), and the post-buffer (22) is communicated with the first gas outlet pipe (6) and the second gas outlet pipe (8).
7. The gas-liquid mixed transportation booster station according to claim 1, further comprising a desander (23), wherein the desander (23) is communicated with the pre-buffer (21) and is used for desanding the gas-liquid discharged into the pre-buffer (21).
8. The gas-liquid mixed transportation booster station according to claim 1, characterized in that a drain outlet (24) is arranged below each of the first gas-liquid cylinder (2) and the second gas-liquid cylinder (3).
CN201921274377.0U 2019-08-07 2019-08-07 Gas-liquid mixed transportation booster station Active CN210599299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921274377.0U CN210599299U (en) 2019-08-07 2019-08-07 Gas-liquid mixed transportation booster station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921274377.0U CN210599299U (en) 2019-08-07 2019-08-07 Gas-liquid mixed transportation booster station

Publications (1)

Publication Number Publication Date
CN210599299U true CN210599299U (en) 2020-05-22

Family

ID=70688268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921274377.0U Active CN210599299U (en) 2019-08-07 2019-08-07 Gas-liquid mixed transportation booster station

Country Status (1)

Country Link
CN (1) CN210599299U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520305A (en) * 2020-07-06 2020-08-11 沈阳风正技术发展有限公司 Secondary booster pump for oilfield water injection
CN112628110A (en) * 2020-12-18 2021-04-09 保定市一禾电气有限公司 Large-tank gas-liquid co-pumping energy-saving environment-friendly device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520305A (en) * 2020-07-06 2020-08-11 沈阳风正技术发展有限公司 Secondary booster pump for oilfield water injection
CN112628110A (en) * 2020-12-18 2021-04-09 保定市一禾电气有限公司 Large-tank gas-liquid co-pumping energy-saving environment-friendly device

Similar Documents

Publication Publication Date Title
CN210599299U (en) Gas-liquid mixed transportation booster station
CN101915074B (en) Oil field well casing gas recovery device and process
CN116677918B (en) Well head gas conveying device of coal bed gas drainage and production well and using method
CN110282275B (en) Cement and powder material aggregate and unloading integrated tank and powder tank truck
CN202417889U (en) Natural gas compressor and recovery system
CN202417893U (en) Cylinder body of compressor
CN104329165B (en) Two-cylinder four-stroke hydraulic free piston engine
CN102822523A (en) Low oil consumption piston type air compressor with internal-cycle piping device
CN203403924U (en) Breathing system of engine
CN210259627U (en) Cement and powder particle material collecting and discharging integrated tank and powder tanker
CN201714356U (en) Casing gas recovery device for oil well in oil field
CN205297847U (en) Energy -saving pump
CN109027680A (en) A kind of Oil-gas Separation mixes defeated pressurization sledge and its technique
CN211230410U (en) Natural gas well head supercharging device that bleeds
CN210265055U (en) Noise-reduction double-cylinder synchronous air compressor
CN110778543B (en) Pneumatic pressurization system for hydraulic oil tank of engineering machinery
CN206129724U (en) Big mining pneumatic desilting dredge pump of suction
CN209324369U (en) A kind of vacuum sewerage vertical hoisting system
CN206582071U (en) Hydraulic free-piston multiphase mixed transportation device
CN111706506A (en) Pneumatic driven liquid flowing device for pneumatic liquid conveying mechanism
CN206562978U (en) Reciprocting piston compressor
CN110761752A (en) Natural gas wellhead pumping and pressurizing method and device
CN214734462U (en) Propylene unloading and conveying device system
CN104685204A (en) Injection device for an internal combustion engine
CN215259244U (en) Oil field well head gas and on-vehicle combustible gas recovery system that volatilizees

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant