CN220929671U

CN220929671U - Natural gas compressor

Info

Publication number: CN220929671U
Application number: CN202322657898.7U
Authority: CN
Inventors: 叶宗健
Original assignee: Dragon Force Shenzhen Energy Equipment Co ltd
Current assignee: Dragon Force Shenzhen Energy Equipment Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-10
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to the technical field of compressors, and mainly relates to a natural gas compressor which comprises a compression device, an oil-gas separation device, a control system and a cooling device, wherein the compression device comprises an air inlet valve, a screw host and a main motor, the air inlet valve is connected with the screw host, the air inlet valve is connected with an air inlet, an air inlet filter is connected between the air inlet and the air inlet valve, and the screw host is connected with the main motor through a coupling; the oil-gas separation device is connected with the screw host through an oil-gas mixing pipe; the control system is communicated with the air inlet valve and the oil-gas separation device, and comprises a plurality of valves for preventing the control system from leaking air, and the cooling device is connected with the oil-gas separation device and the screw host and is connected with an air supply port. The utility model aims to keep the air pressure in the equipment in a safe state all the time.

Description

Natural gas compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a natural gas compressor.

Background

Natural gas is colorless, odorless and nontoxic, has the advantages of stable combustion, high heat value, environment-friendly use, low price and the like, is widely used as an alternative fuel for buses and taxis, and needs to be compressed in order to store more natural gas for a corresponding engine, so that a natural gas compressor is needed during engine detection.

The patent with the publication number of CN216407167U discloses a permanent magnet variable frequency medium pressure oil-free double-screw air compressor, which comprises an air inlet structure, a pneumatic control loop, a compression structure, an oil-gas separation structure and a cooling structure, wherein the pneumatic control loop only controls an air inlet valve by detecting the exhaust pressure to achieve the effect of saving energy, the whole equipment is not provided with the exhaust structure, and after the equipment stops working, residual air in the equipment cannot be discharged rapidly, so that threat is easily caused.

Disclosure of utility model

The main purpose of the utility model is to provide a natural gas compressor, which aims to ensure that the gas pressure in the equipment can be always in a safe state.

In order to achieve the above object, the present utility model provides a natural gas compressor comprising a compression device, an oil-gas separation device, a control system and a cooling device:

The compression device comprises an air inlet valve, a screw host and a main motor, wherein the air inlet valve is connected with the screw host, the air inlet valve is connected with an air inlet, an air inlet filter is connected between the air inlet and the air inlet valve, and the screw host is connected with the main motor through a coupler;

The oil-gas separation device is connected with the screw host through an oil-gas mixing pipe;

The control system is communicated with the air inlet valve and the oil-gas separation device and comprises a plurality of valves for avoiding air leakage of the control system; and

The cooling device is connected with the oil-gas separation device and the screw main machine and is connected with an air supply port.

In one embodiment of the present application, the control system includes a communication pipe, a blow-down pipe, and a valve:

The communicating pipe is connected with the air inlet valve and the oil-gas separation device;

the air vent pipe is connected with the communicating pipe, one end of the air vent pipe is connected with the oil-gas separation device, and the other end of the air vent pipe is communicated with the atmosphere and is used for helping equipment to release pressure; and

The valve is arranged on the communicating pipe in a penetrating way and is used for blocking the blow-down pipe, the air inlet valve and the oil-gas separation device.

In an embodiment of the present application, the valve includes a first vent valve, a second vent valve, a first solenoid valve, a second solenoid valve, and a ball valve, the first vent valve is connected between the intake valve and the oil-gas separation device and connected to the first solenoid valve, the first solenoid valve is connected to the intake valve, the vent pipe, and the second vent valve and connected to the oil-gas separation device, the second vent valve is connected to the first solenoid valve, the second solenoid valve, and the vent pipe and connected to the oil-gas separation device, the second solenoid valve is connected between the first solenoid valve, the second vent valve, and the vent pipe and connected to the oil-gas separation device, and the ball valve is connected between the oil-gas separation device and the vent pipe.

In an embodiment of the present application, the oil-gas separation device includes an oil tank, a minimum pressure valve, a relief valve, and an oil return pipe:

The oil barrel is connected to the screw host through the oil-gas mixing pipe and is communicated with the first electromagnetic valve, the second electromagnetic valve and the second emptying valve;

The minimum pressure valve is communicated with the first emptying valve and the ball valve, is connected with the oil content barrel and is connected with the cooling device;

the safety valve is connected to the oil content barrel and communicated with the blow-down pipe and is used for relieving pressure when the internal pressure of the oil content barrel is excessive; and

The oil return pipe is communicated with the oil content barrel and the screw main machine, and an oil return filter is arranged on the oil return pipe in a penetrating mode.

In an embodiment of the application, the cooling device comprises a temperature control valve, an essential oil filter and an oil gas cooler:

the temperature control valve is connected to the oil content barrel;

The essential oil filter is connected to the temperature control valve and is communicated with the screw host through a first oil pipe; and

And a second oil pipe and a third oil pipe are connected between the oil gas cooler and the temperature control valve, and the minimum pressure valve is connected with the oil gas cooler.

In an embodiment of the present application, the oil-gas cooler includes an oil cooling portion, an air cooling portion, and an air supply port:

The oil cooling part is communicated with the second oil pipe and the third oil pipe;

The minimum pressure valve is connected with the gas cooling part and is used for cooling the compressed natural gas; and

The air supply port is connected to the air cooling part and used for guiding out compressed natural gas.

In an embodiment of the present application, a check valve is connected between the gas supply port and the gas cooling portion, so as to avoid a gas return phenomenon during gas transmission.

According to the technical scheme, the air inlet filter is arranged between the air inlet valve and the air inlet of the compression device, so that impurities of gas entering the compressor are reduced, the damage to the inside of the compressor can be avoided, the gas enters the screw host machine and is compressed, lubricating oil is required to be injected into the screw host machine for assisting in compressing the gas, the oil can be used for cooling the gas, and the oil and gas can be used for protecting equipment in a skidding mode, after being mixed and compressed, the oil and gas enters the oil and gas separation device through the oil and gas mixing pipe, the separated oil and gas are separated into oil and gas again through the oil and gas separation device, the separated oil and gas all need to pass through the cooling device, the oil is cooled and then enters the screw host machine through the first oil pipe for assisting in compressing the gas, and the cooled natural gas enters the air supply port through the one-way valve.

Further, be equipped with control system between compression device and the oil gas separation device, control system includes communicating pipe, blow-down pipe and valve, communicating pipe connection admission valve, oil content bucket, minimum pressure valve and blow-down pipe, and blow-down pipe one end is connected on the relief valve of oil content bucket, the other end communicates the atmosphere for open automatically after the oil content bucket is too high in pressure, help the device pressure release, avoid damaging the machine, the valve is connected in between admission valve, oil content bucket, minimum pressure valve and blow-down pipe for produce the effect of cut off to these structures, avoid equipment to take place gas leakage waste resource when not needing the uninstallation.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a natural gas compressor according to the present utility model;

FIG. 2 is another side view of the natural gas compressor of the present utility model;

fig. 3 is a flow chart of the operation of the natural gas compressor of the present utility model.

Reference numerals illustrate:

1. A compression device; 11. an intake valve; 12. an air inlet; 13. an intake air filter; 14. a screw host; 141. a coupling; 15. a main motor; 2. an oil-gas separation device; 21. an oil-gas mixing pipe; 22. an oil content barrel; 23. a minimum pressure valve; 24. a safety valve; 25. an oil return pipe; 251. an oil return filter; 3. a control system; 31. a communicating pipe; 32. blow-down pipe; 33. a valve; 331. a first vent valve; 332. a second vent valve; 333. a first electromagnetic valve; 334. a second electromagnetic valve; 335. a ball valve; 4. a cooling device; 41. a temperature control valve; 42. filtering essential oil; 421. a first oil pipe; 43. an oil gas cooler; 431. a second oil pipe; 432. a third oil pipe; 433. an oil cooling unit; 434. a gas cooling section; 5. an air supply port; 51. a one-way valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 3, in one embodiment of the present utility model, a natural gas compressor is provided, which includes a compression device 1, an oil-gas separation device 2, a control system 3, and a cooling device 4, wherein the compression device 1 includes an intake valve 11, a screw main machine 14, and a main motor 15, the intake valve 11 is connected to the screw main machine 14, the intake valve 11 is connected to an intake port 12, an intake filter 13 is connected between the intake port 12 and the intake valve 11, and the screw main machine 14 is connected to the main motor 15 through a coupling 141; the oil-gas separation device 2 is connected with the screw host 14 through an oil-gas mixing pipe 21; the control system 3 is communicated with the air inlet valve 11 and the oil-gas separation device 2, and the control system 3 comprises a plurality of valves 33 for avoiding air leakage of the control system 3; the cooling device 4 is connected to the oil-gas separation device 2 and the screw main machine 14, and is connected to the air supply port 5.

In a natural gas compressor of the present application, the compression device 1 is composed of an air inlet valve 11, a screw main machine 14, a coupling 141 and a main motor 15, the main motor 15 provides power, the coupling 141 is responsible for connection, the screw main machine 14 is mainly used for compressing natural gas, the air inlet valve 11 is connected with the screw main machine 14, natural gas can be introduced into the screw main machine 14, the air inlet valve 11 is connected with an air inlet 12 for inputting natural gas, an air inlet filter 13 is arranged between the air inlet 12 and the air inlet valve 11 to avoid the damage of the machine caused by the entry of impurities in the natural gas into the compressor, in order to avoid too high temperature of the compressed natural gas, and to better enable the machine to have longer service life, oil is injected into the screw main machine 14 through a first oil pipe 421 to assist the compressed gas, natural gas is mixed with the oil after being compressed, the natural gas is injected into an oil barrel 22 in the oil-gas separation device 2 through an oil-gas mixing pipe 21, the oil barrel 22 is utilized to separate the oil and the oil, the top end of the oil barrel 22 is provided with a minimum pressure valve 23, the minimum pressure valve 23 can be used as a buffer and prevent pressure leakage, the natural gas can be cooled through a minimum pressure valve 23 and a cooling device 4 and a cooling device is used for cooling the air inlet 51, and finally, the air is cooled through a cooling device is provided at an air inlet port 51.

Further, in order to ensure safety, the safety valve 24 is connected to the oil barrel 22, when the internal pressure of the oil barrel 22 is too high, the safety valve 24 is automatically started, the safety valve 24 is communicated with the blow-down pipe 32, excessive gas is discharged through the blow-down pipe 32 to be unloaded for equipment, safety of personnel is ensured, the oil barrel 22 is provided with the oil return pipe 25, the oil return pipe 25 is communicated with the screw host 14, when oil return occurs to the oil barrel 22, oil can be guided back through the oil return pipe 25, the oil return pipe 25 is provided with the oil return filter 251, and possible impurities are prevented from entering the screw host 14.

Further, the compressed and separated natural gas and oil will be heated, in order to make the use safer, the natural gas will enter the gas cooling part 434 after passing through the minimum pressure valve 23, the oil to be cooled will first need to enter the temperature control valve 41 connected to the oil barrel 22, after the temperature control valve 41 detects that the temperature is too high, the oil will enter the oil cooling part 433 of the oil gas cooler 43 through the second oil pipe 431, after the temperature is lowered, the oil will reenter the temperature control valve 41 through the third oil pipe 432 to detect the temperature, when the temperature is unsuitable, the oil will enter the oil cooler through the second oil pipe 431 again, when the temperature is suitable, the oil will be filtered through the essential oil filter 42 connected to the temperature control valve 41, and the filtered oil will be led into the screw host 14 through the first oil pipe 421.

Further, in order to control natural gas and to timely unload the machine after finishing working, the compressor is provided with a control system 3 to realize the function, the control system 3 is composed of a communicating pipe 31, an emptying pipe 32 and a valve 33, the communicating pipe 31 mainly connects the air inlet valve 11, the oil content barrel 22, the minimum pressure valve 23 and the emptying pipe 32 together, so that when the device needs to be unloaded, gas in the device is discharged through the emptying pipe 32 through the communicating pipe 31, but in order to enable the device to be better loaded and not to be depressurized, the communicating pipe 31 is provided with a plurality of valves 33, a first emptying valve 331 is connected between the air inlet valve 11 and the minimum pressure valve 23, the communicating pipe 31 between the two valves can be depressurized through the emptying valve when the pressure of the minimum pressure valve 23 is too large, the communicating pipe 31 between the two valves is additionally connected on the emptying pipe 32, a ball valve 335 is penetratingly arranged on the communicating pipe for assisting the unloading, the first electromagnetic valve 333 is connected with the air inlet valve 11, a second emptying valve 332 and the emptying pipe 32, the second electromagnetic valve 334 can assist the pressure release, the second electromagnetic valve 332 is connected between the first electromagnetic valve 333, the second electromagnetic valve 334 and the emptying pipe 32, the device can better load and the second electromagnetic valve 334 or the second electromagnetic valve 332 and the two electromagnetic valve 32 are well loaded and the two electromagnetic valve 332 and the empty valve 32 are well or well unloaded through the first electromagnetic valve 332 and the second electromagnetic valve 332 and the two electromagnetic valve 332 and the second electromagnetic valve 32.

Further, the whole compressor is arranged on the frame, besides the mechanism, an explosion-proof electric control cabinet is additionally arranged, and the safety of operators can be further ensured.

Referring to fig. 1 in combination, in an embodiment of the present application, the control system 3 includes a communication pipe 31, a blow-down pipe 32, and a valve 33, wherein the communication pipe 31 is connected to the intake valve 11 and the oil-gas separation device 2; the blow-down pipe 32 is connected with a communicating pipe 31, one end of the blow-down pipe 32 is connected with the oil-gas separation device 2, and the other end is communicated with the atmosphere for helping the equipment to release pressure; the valve 33 is disposed on the communicating pipe 31 in a penetrating manner and is used for blocking the blow-down pipe 32, the air inlet valve 11 and the oil-gas separation device 2.

In order to load or unload the device in time, the control system 3 is arranged on the compressor to realize the function, the control system 3 is composed of a communicating pipe 31, an emptying pipe 32 and a valve 33, the communicating pipe 31 mainly connects the air inlet valve 11, the oil tank 22, the minimum pressure valve 23 and the emptying pipe 32 together, so that when the device needs to be unloaded, the communicating pipe 31 is convenient for exhausting the gas in the device through the emptying pipe 32, but in order to enable the device to be loaded better and not to be unloaded, the communicating pipe 31 is provided with a plurality of valves 33, a first emptying valve 331 is connected between the air inlet valve 11 and the minimum pressure valve 23, the communicating pipe 31 between the two valves is connected to the emptying pipe 32 in addition, a ball valve is arranged on the communicating pipe 31 in a penetrating mode for assisting the unloading, the first electromagnetic valve 333 is connected to the air inlet valve 11, a second emptying valve 332 and the emptying pipe 32, the second emptying valve 332 can assist the decompression, the second emptying valve 332 is connected between the first electromagnetic valve 333, the second electromagnetic valve 334 and the emptying pipe 32, the first electromagnetic valve 334 is connected between the first electromagnetic valve 332 and the emptying valve 32, the second electromagnetic valve 332 and the second electromagnetic valve 332 can be well loaded or the emptying valve 332 and the emptying valve 32 are well matched with each other, and the second electromagnetic valve 332 is connected between the second electromagnetic valve 32 and the emptying valve 32.

Referring to fig. 3 in combination, in an embodiment of the present application, the valve 33 includes a first vent valve 331, a second vent valve 332, a first solenoid valve 333, a second solenoid valve 334, and a ball valve 335, the first vent valve 331 is connected between the intake valve 11 and the oil-gas separation device 2 and connected to the first solenoid valve 333, the first solenoid valve 333 is connected to the intake valve 11, the vent pipe 32, and the second vent valve 332 and connected to the oil-gas separation device 2, the second vent valve 332 is connected to the first solenoid valve 333, the second solenoid valve 334, and the vent pipe 32 and connected to the oil-gas separation device 2, the second solenoid valve 334 is connected between the first solenoid valve 333, the second vent valve 332, and the vent pipe 32 and connected to the oil-gas separation device 2, and the ball valve 335 is connected between the oil-gas separation device 2 and the vent pipe 32.

In the natural gas compressor of the present application, a plurality of valves 33 are provided on the communicating pipe 31, wherein the solenoid valve is 2 pins not 3 pins, 1 pins not 2 pins, 2 pins not 3 pins when the solenoid valve is in a channel, the first vent valve 331 is connected between the air inlet valve 11 and the minimum pressure valve 23, the pressure of the minimum pressure valve 23 can be relieved through the vent valve when the pressure is too high, the communicating pipe 31 between the two is additionally connected on the vent pipe 32, a ball valve 335 is penetrated on the communicating pipe 31 for assisting in unloading, the first solenoid valve 333 is connected between the air inlet valve 11, the second vent valve 332 and the vent pipe 32, the pressure relief can be assisted, the second vent valve 332 is connected between the first solenoid valve 333, the second solenoid valve 334 and the vent pipe 32, the second solenoid valve 334 is also used for regulating and controlling the pressure relief, the second solenoid valve 332, the vent pipe 32 and the first solenoid valve 333, the oil drum 22 is also connected between the first solenoid valve 333, the second solenoid valve 334 and the second vent valve 332 through the vent valve 31, the first solenoid valve 334 and the first solenoid valve 333, when the compressor 7 is in operation, the first solenoid valve 334 and the first solenoid valve is in need to be stopped or the emergency valve 3 is in a more delayed mode after the first solenoid valve is started or the emergency valve is stopped, the first solenoid valve 3 is in operation, and the emergency valve is stopped, and the emergency system is unloaded.

Referring to fig. 3 in combination, in an embodiment of the present application, the oil-gas separation device 2 includes an oil tank 22, a minimum pressure valve 23, a safety valve 24 and an oil return pipe 25, wherein the oil tank 22 is connected to the screw main unit 14 through the oil-gas mixing pipe 21 and is communicated with a first solenoid valve 333, a second solenoid valve 334 and a second drain valve 332; the minimum pressure valve 23 is communicated with the first drain valve 331 and the ball valve 335, and the minimum pressure valve 23 is connected to the oil tank 22 and to the cooling device 4; the relief valve 24 is connected to the oil tank 22 and is communicated with the blow-down pipe 32 for releasing pressure when the internal pressure of the oil tank 22 is excessive; the oil return pipe 25 is communicated with the oil barrel 22 and the screw main unit 14, and an oil return filter 251 is arranged on the oil return pipe 25 in a penetrating manner.

In a natural gas compressor of the present application, natural gas is mixed with oil after being compressed, the natural gas is injected into an oil tank 22 in an oil-gas separation device 2 through an oil-gas mixing pipe 21, oil and gas are separated by the oil tank 22, a minimum pressure valve 23 is arranged at the top end of the oil tank 22, the minimum pressure valve 23 can be used as buffer and prevent pressure leakage, the separated compressed natural gas enters a gas cooling part 434 in a cooling device 4 through the minimum pressure valve 23, the compressed natural gas is finally led out through a one-way valve 51 and an air supply port 5 for convenient use, a safety valve 24 is connected to the oil tank 22 for ensuring safety, when the internal pressure of the oil tank 22 is too high, the safety valve 24 is automatically started, the safety valve 24 is communicated with a blow-down pipe 32, excessive gas is discharged through the blow-down pipe 32 for equipment unloading, personnel safety is ensured, an oil return pipe 25 is arranged on the oil tank 22, when the oil return pipe 25 is communicated with a screw host 14, oil return is conducted back through the oil return pipe 25, and possible impurities are prevented from entering the screw host 14 through the oil return pipe 25.

Referring to fig. 3 in combination, in an embodiment of the present application, the cooling device 4 includes a thermo valve 41, an essential oil filter 42, and an oil-gas cooler 43, where the thermo valve 41 is connected to the oil tank 22; the essential oil filter 42 is connected to the temperature control valve 41 and is communicated with the screw host 14 through a first oil pipe 421; a second oil pipe 431 and a third oil pipe 432 are connected between the oil gas cooler 43 and the temperature control valve 41, and the minimum pressure valve 23 is connected to the oil gas cooler 43.

In the natural gas compressor of the present application, both compressed and separated natural gas and oil are warmed up, in order to make the use thereof safer, the natural gas is introduced into the gas cooling part 434 after passing through the minimum pressure valve 23, and the oil to be cooled is firstly introduced into the thermo valve 41 connected to the oil tank 22, after the thermo valve 41 detects that the temperature is too high, the oil enters the oil cooling part 433 of the oil-gas cooler 43 through the second oil pipe 431, after the temperature is lowered, the oil enters the thermo valve 41 again through the third oil pipe 432 for temperature detection, when the temperature is unsuitable, the oil enters the oil cooler again through the second oil pipe 431, and when the temperature is suitable, the oil is filtered through the essential oil filter 42 connected to the thermo valve 41, and the filtered oil is introduced into the screw host 14 through the first oil pipe 421.

Referring to fig. 3 in combination, in an embodiment of the present application, the oil-gas cooler 43 includes an oil cooling portion 433, an air cooling portion 434, and an air supply port 5, where the oil cooling portion 433 is connected to a second oil pipe 431 and a third oil pipe 432; the minimum pressure valve 23 is connected to the gas cooling part 434 for cooling the compressed natural gas; the gas supply port 5 is connected to the gas cooling part 434 for discharging compressed natural gas.

In the natural gas compressor of the present application, the oil-gas cooler 43 includes an oil cooling part 433 and an air cooling part 434, the air cooling part 434 is communicated with the minimum pressure valve 23 for cooling compressed natural gas, and is output through the air supply port 5 connected to the air cooling part 434, the oil cooler includes an oil cooling circuit, firstly, the oil cooling circuit needs to enter the temperature control valve 41 connected to the oil barrel 22, after the temperature control valve 41 detects that the temperature is too high, the oil cooling circuit enters the oil cooling part 433 of the oil-gas cooler 43 through the second oil pipe 431, after cooling, the oil enters the oil cooler through the third oil pipe 432 again for temperature detection, when the temperature is not suitable, the oil is filtered through the essential oil filter 42 connected to the temperature control valve 41 again, and when the temperature is suitable, the filtered oil is led into the screw host 14 through the first oil pipe 421, in this way, the oil can be recycled, and the service life of the machine is effectively protected.

Referring to fig. 1 to 2 in combination, in an embodiment of the present application, a check valve 51 is connected between the gas supply port 5 and the gas cooling portion 434, so as to prevent the gas from returning during the transportation.

In the natural gas compressor, a one-way valve 51 and a ball valve 335 are connected between a gas supply port 5 and a gas cooling part 434, the ball valve 335 can be manually adjusted to switch, the one-way valve 51 is used for preventing compressed and cooled natural gas from generating back gas and returning back oil gas in the cooler 43, and the one-way valve 51 and the ball valve 335 can be installed on site by a customer as required, so that the natural gas compressor is convenient to adjust.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A natural gas compressor, comprising:

The compression device comprises an air inlet valve, a screw host and a main motor, wherein the air inlet valve is connected with the screw host, the air inlet valve is connected with an air inlet, an air inlet filter is connected between the air inlet and the air inlet valve, and the screw host is connected with the main motor through a coupling;

And the cooling device is connected with the oil-gas separation device and the screw main machine and is connected with an air supply port.

2. A natural gas compressor as defined in claim 1, wherein said control system comprises:

A communication pipe connected to the intake valve and the oil-gas separation device;

The blow-down pipe is connected with the communicating pipe, one end of the blow-down pipe is connected with the oil-gas separation device, and the other end of the blow-down pipe is communicated with the atmosphere and is used for helping equipment to release pressure; and

And the valve is arranged on the communicating pipe in a penetrating way and is used for blocking the blow-down pipe, the air inlet valve and the oil-gas separation device.

3. The natural gas compressor of claim 2, wherein the valve comprises a first vent valve, a second vent valve, a first solenoid valve, a second solenoid valve, and a ball valve, wherein the first vent valve is connected between the intake valve and the oil-gas separator and is connected to the first solenoid valve, the first solenoid valve is connected to the intake valve, the vent pipe, and the second vent valve and is connected to the oil-gas separator, and the second vent valve is connected to the first solenoid valve, the second solenoid valve, and the vent pipe and is connected to the oil-gas separator, the second solenoid valve is connected between the first solenoid valve, the second vent valve, and the vent pipe and is connected to the oil-gas separator, and the ball valve is connected between the oil-gas separator and the vent pipe.

4. A natural gas compressor as defined in claim 3, wherein said oil and gas separation device comprises:

The oil content barrel is connected to the screw host through the oil-gas mixing pipe and is communicated with the first electromagnetic valve, the second electromagnetic valve and the second emptying valve;

A minimum pressure valve, which is communicated with the first emptying valve and the ball valve, is connected with the oil content barrel and is connected with the cooling device;

5. A natural gas compressor as defined in claim 4, wherein said cooling means comprises:

the temperature control valve is connected to the oil content barrel;

The oil gas cooler is connected with a second oil pipe and a third oil pipe between the oil gas cooler and the temperature control valve, and the minimum pressure valve is connected with the oil gas cooler.

6. A natural gas compressor as defined in claim 5, wherein said oil and gas cooler comprises:

An oil cooling part, which is communicated with the second oil pipe and the third oil pipe;

The minimum pressure valve is connected to the gas cooling part and used for cooling the compressed natural gas; and

And the air supply port is connected with the air cooling part and used for guiding out compressed natural gas.

7. The natural gas compressor of claim 6, wherein a check valve is connected between the gas supply port and the gas cooling portion for preventing a gas from returning during the transfer.