Explosion-proof double-screw oil injection compressor for inert gas pressurization

Abstract

The utility model discloses an anti-explosion double-screw oil injection compressor for inert gas pressurization, and relates to the technical field of compressors. The anti-explosion double-screw oil injection compressor for inert gas pressurization comprises a gas inlet assembly, a main engine compression assembly, an oil-gas separation assembly, a filtering assembly, a heat dissipation assembly, a control assembly and a shell. The air inlet assembly is arranged on the shell and comprises a ball valve, a one-way valve, a release anti-explosion electromagnetic valve, an anti-explosion electromagnetic stop valve, a pressure reducing valve, an air filter, an anti-explosion pressure controller, an air inlet safety valve, an air inlet connecting hose, an air inlet valve, an air inlet valve electromagnetic valve and an air inlet pipe. The explosion-proof gas inlet valve can be used in cooperation with a conventional gas inlet valve on a gas compressor, specific functions are achieved, due to the fact that the explosion-proof gas inlet valve is provided with various protection devices (the pressure reducing valve, the explosion-proof pressure controller and the gas inlet safety valve), the application range is wide, and the explosion-proof gas inlet valve is suitable for being used in the explosive environment.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to an explosion-proof twin-screw oil-injected compressor for inert gas pressurization. Background Art

[0002] Inert gas compressors are suitable for pressurizing most inert gases such as compressed air, nitrogen, helium, argon, oxygen, hydrogen, methane, natural gas, etc. Their working principle is to drive the large-area end piston through compressed air, thereby obtaining high-pressure gas output at the small-area end.

[0003] The inert gas boosting equipment market has long been dominated by piston machines, especially the explosion-proof inert gas boosting equipment market. Piston machines naturally have the characteristics of large vibration, high noise, and many wearing parts. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an explosion-proof twin-screw oil-injected compressor for inert gas boosting, which can solve the problem that the inert gas boosting equipment market has long been occupied by piston machines, especially the explosion-proof inert gas boosting equipment market. Piston machines naturally have problems such as large vibration, high noise, and many wearing parts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof twin-screw oil-injected compressor for inert gas boosting, comprising an air intake assembly, a main engine compression assembly, an oil-gas separation assembly, a filter assembly, a heat dissipation assembly, a control assembly and a housing;

[0006] An air intake assembly is arranged on the housing, and the air intake assembly includes a ball valve, a one-way valve, a discharge explosion-proof solenoid valve, an explosion-proof solenoid stop valve, a pressure reducing valve, an air filter, an explosion-proof pressure controller, an air intake safety valve, an air intake connecting hose, an air intake valve, an air intake valve solenoid valve and an air intake pipe. The air intake pipe is fixedly connected to the housing, one end of the air intake pipe is connected to the pressure reducing valve, the other end of the pressure reducing valve is connected to the explosion-proof solenoid stop valve, the other end of the explosion-proof solenoid stop valve is connected to the discharge explosion-proof solenoid valve, the other end of the discharge explosion-proof solenoid valve is connected to the one-way valve, and the other end of the one-way valve is connected to the ball valve;

[0007] The main engine compression assembly is arranged in the shell, and the main engine compression assembly includes an injection pipe, a coupling, a center bracket, a shock-absorbing pad, an explosion-proof main motor and a supercharged main engine. The supercharged main engine is installed inside the shell, the output shaft of the explosion-proof main motor is connected with the coupling, and the other end of the coupling is connected with the input end of the supercharged main engine. One end of the center bracket supports the coupling, and the other end of the center bracket is fixed in the shell. The lower end of the explosion-proof main motor is paved with a shock-absorbing pad;

[0008] The oil-gas separation component is arranged in the shell, and the oil-gas separation component includes an oil-gas barrel assembly and a pressure maintaining valve. The oil-gas barrel assembly is installed inside the shell, and the pressure maintaining valve is installed on the oil-gas barrel assembly. One end of the oil injection pipe is connected to the oil-gas barrel assembly.

[0009] The filter assembly is arranged on the oil and gas barrel assembly, and the filter assembly includes an oil filter assembly, and the oil filter assembly is fixed on the oil and gas barrel assembly, and the oil filter assembly is connected with the oil and gas barrel assembly;

[0010] The heat dissipation component is arranged in the shell, and the heat dissipation component includes an explosion-proof fan and a radiator. The explosion-proof fan is installed inside the shell, and the radiator is installed on the shell by screws;

[0011] The control component is arranged in the shell, and the control component includes an explosion-proof control cabinet, an emergency stop button, a start switch, an explosion-proof temperature sensor and an explosion-proof pressure sensor. The explosion-proof control cabinet is installed inside the shell by screws, the explosion-proof temperature sensor is installed on the injection pipe, the explosion-proof pressure sensor is installed on the explosion-proof pressure controller, and the pressure maintaining valve is connected to the explosion-proof pressure sensor.

[0012] Preferably, the other end of the ball valve is connected to an explosion-proof pressure controller, the other end of the explosion-proof pressure controller is connected to an air filter, and the other end of the air filter is connected to an air intake safety valve.

[0013] Preferably, the other end of the air intake safety valve is connected to the air intake connecting hose, the other end of the air intake connecting hose is connected to the air intake valve, and the other end of the air intake valve is connected to the air intake valve solenoid valve.

[0014] Preferably, the emergency stop button is fixed on the housing, the emergency stop button is electrically connected to the explosion-proof control cabinet, the start switch is fixed on the housing, the start switch is electrically connected to the explosion-proof control cabinet, and the other end of the fuel injection pipe is connected to the explosion-proof control cabinet.

[0015] Preferably, the outlet pipe is fixed on the outer shell, the radiator is connected to the outlet pipe, the radiator is connected to the oil filter assembly, the exhaust pressure gauge is fixed on the outer shell, the exhaust pressure gauge is connected to the outlet pipe, the intake pressure gauge is fixed on the outer shell, and the intake pressure gauge is connected to the intake pipe.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The explosion-proof twin-screw oil-injected compressor for inert gas boosting has a special design for the air intake assembly. It can be used in conjunction with the conventional air intake valve on the gas compressor to achieve specific functions. In addition, it has a variety of protection devices (pressure reducing valve, explosion-proof pressure controller and air intake safety valve), so it has a wide range of applications. The electrical part adopts an explosion-proof design and is suitable for use in explosive environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a left side schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the back of the utility model;

[0022] Figure 4 This is a schematic diagram of the bottom of the utility model;

[0023] Figure 5 It is a right side schematic diagram of the utility model.

[0024] Figure numerals: 1. explosion-proof control cabinet; 2. oil filter assembly; 3. shell; 4. oil and gas barrel assembly; 5. pressure maintaining valve; 6. exhaust pressure gauge; 7. emergency stop button; 8. start switch; 9. ball valve; 10. one-way valve; 11. discharge explosion-proof solenoid valve; 12. explosion-proof solenoid stop valve; 13. pressure reducing valve; 14. explosion-proof temperature sensor; 15. fuel injection pipe; 16. air filter; 17. explosion-proof pressure controller; 18. explosion-proof pressure sensor; 19. coupling; 20. center bracket; 21. shock pad; 22. explosion-proof main motor; 23. explosion-proof fan; 24. intake safety valve; 25. intake connecting hose; 26. intake valve; 27. intake valve solenoid valve; 28. booster host; 29. ​​radiator; 30. intake pressure gauge; 31. intake pipe; 32. outlet pipe. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] See also Figure 1-5 , the utility model provides a technical solution: an explosion-proof twin-screw oil-injected compressor for inert gas boosting, comprising an air intake component, a main engine compression component, an oil-gas separation component, a filter component, a heat dissipation component, a control component and a housing 3;

[0030] The air intake assembly is arranged on the housing 3, and the air intake assembly includes a ball valve 9, a one-way valve 10, a discharge explosion-proof solenoid valve 11, an explosion-proof solenoid stop valve 12, a pressure reducing valve 13, an air filter 16, an explosion-proof pressure controller 17, an air intake safety valve 24, an air intake connecting hose 25, an air intake valve 26, an air intake valve solenoid valve 27 and an air intake pipe 31, the air intake pipe 31 is fixedly connected to the housing 3, one end of the air intake pipe 31 is connected to the pressure reducing valve 13, the other end of the pressure reducing valve 13 is connected to the explosion-proof solenoid stop valve 12, the other end of the explosion-proof solenoid stop valve 12 is connected to the discharge explosion-proof solenoid valve 11, the other end of the discharge explosion-proof solenoid valve 11 is connected to the one-way valve 10, and the other end of the one-way valve 10 is connected to the ball valve 9;

[0031] The main engine compression assembly is arranged in the housing 3, and the main engine compression assembly includes an injection pipe 15, a coupling 19, a center bracket 20, a shock-absorbing pad 21, an explosion-proof main motor 22 and a supercharger main engine 28. The supercharger main engine 28 is installed inside the housing 3, the output shaft of the explosion-proof main motor 22 is connected to the coupling 19, and the other end of the coupling 19 is connected to the input end of the supercharger main engine 28. One end of the center bracket 20 supports the coupling 19, and the other end of the center bracket 20 is fixed in the housing 3. The lower end of the explosion-proof main motor 22 is paved with a shock-absorbing pad 21;

[0032] The oil-gas separation component is arranged in the housing 3, and the oil-gas separation component includes an oil-gas barrel assembly 4 and a pressure maintaining valve 5. The oil-gas barrel assembly 4 is installed inside the housing 3, and the pressure maintaining valve 5 is installed on the oil-gas barrel assembly 4. One end of the oil injection pipe 15 is connected to the oil-gas barrel assembly 4.

[0033] The filter assembly is arranged on the oil and gas barrel assembly 4, and the filter assembly includes an oil filter assembly 2, and the oil filter assembly 2 is fixed on the oil and gas barrel assembly 4, and the oil filter assembly 2 is connected with the oil and gas barrel assembly 4;

[0034] The heat dissipation component is arranged in the housing 3, and the heat dissipation component includes an explosion-proof fan 23 and a radiator 29. The explosion-proof fan 23 is installed inside the housing 3, and the radiator 29 is installed on the housing 3 by screws;

[0035] The control component is arranged in the shell 3, and the control component includes an explosion-proof control cabinet 1, an emergency stop button 7, a start switch 8, an explosion-proof temperature sensor 14 and an explosion-proof pressure sensor 18. The explosion-proof control cabinet 1 is installed inside the shell 3 by screws, the explosion-proof temperature sensor 14 is installed on the injection pipe 15, the explosion-proof pressure sensor 18 is installed on the explosion-proof pressure controller 17, and the pressure maintaining valve 5 is connected to the explosion-proof pressure sensor 18.

[0036] The other end of the ball valve 9 is connected to an explosion-proof pressure controller 17 , the other end of the explosion-proof pressure controller 17 is connected to an air filter 16 , and the other end of the air filter 16 is connected to an intake safety valve 24 .

[0037] The other end of the intake safety valve 24 is connected to the intake connecting hose 25 , the other end of the intake connecting hose 25 is connected to the intake valve 26 , and the other end of the intake valve 26 is connected to the intake valve solenoid valve 27 .

[0038] The emergency stop button 7 is fixed on the housing 3 , and the emergency stop button 7 is electrically connected to the explosion-proof control cabinet 1 . The start switch 8 is fixed on the housing 3 , and the start switch 8 is electrically connected to the explosion-proof control cabinet 1 . The other end of the fuel injection pipe 15 is connected to the explosion-proof control cabinet 1 .

[0039] The outlet pipe 32 is fixed on the outer shell 3, the radiator 29 is connected to the outlet pipe 32, the radiator 29 is connected to the oil filter assembly 2, the exhaust pressure gauge 6 is fixed on the outer shell 3, the exhaust pressure gauge 6 is connected to the outlet pipe 32, the intake pressure gauge 30 is fixed on the outer shell 3, and the intake pressure gauge 30 is connected to the intake pipe 31.

[0040] When the supercharger is working, the external inert gas to be pressurized enters the interior of the housing 3 through the air inlet pipe 31, and the pressure reducing valve 13 can set the pressure of the gas to avoid pressure shock and limit the maximum inlet gas pressure;

[0041] The explosion-proof electromagnetic stop valve 12 controls the on-off of the air intake, and the release explosion-proof electromagnetic valve 11 plays the role of releasing the residual pressure when the machine is unloaded or shut down;

[0042] The one-way valve 10 ensures that external gas does not enter the air intake system when the machine is shut down or unloaded;

[0043] Ball valve 9 can manually cut off the air intake system for maintenance of explosion-proof equipment;

[0044] The explosion-proof pressure controller 17 is used to control the upper and lower limits of the pressure in the air intake system to prevent the air intake system from being over-pressurized due to large fluctuations in the air source or damage to other components in the air intake system.

[0045] The air filter 16 is a pressure-resistant structure and can work stably under a certain positive or negative pressure to ensure the cleanliness of the gas entering the compressor host;

[0046] The air intake safety valve 24 is a mechanical protection for the air intake system, ensuring that fluctuations in the external air source will not damage the supercharger.

[0047] The air intake connection hose 25 is used to reduce the vibration generated by the main engine and transmit it to the air filter;

[0048] The intake valve 26 and the intake valve solenoid valve 27 control the size of the intake passage and are the core of the intake assembly.

[0049] The main engine compression assembly is connected to the explosion-proof main motor 22 by the booster main engine 28 through the coupling 19 and the center bracket 20, and the shock-absorbing pad 21 plays a role in reducing vibration.

[0050] The oil-gas separation component is composed of an oil-gas barrel assembly 4 and a pressure maintaining valve 5. The oil-gas barrel assembly 4 includes a mechanical collision separation and a filter element fine separation structure (not shown in the figure), which can separate the oil-gas mixture.

[0051] The oil filter assembly 2 consists of an oil filter seat and an oil filter, which filters out impurities in the oil to ensure the cleanliness of the circulating oil.

[0052] The heat dissipation assembly is composed of an explosion-proof fan 23 and a radiator 29. The fan blows to force air to pass through the radiator to take away the heat generated during the operation of the machine.

[0053] The control box is the brain of the entire control system, which enables the supercharger to have various protections and work efficiently and reliably according to the program. The actuator is turned on and off by the instructions sent by the controller, so that the supercharger can achieve specific functions; the sensor element collects various parameters during operation, and the controller makes adjustments to the various operations of the supercharger after judgment.

[0054] When the supercharger starts working, the gas enters the air intake system through the air intake pipe 31 and is reduced to the required pressure through the pressure reducing valve 13; at this time, the explosion-proof electromagnetic stop valve 12 is opened, the discharge explosion-proof electromagnetic valve 11 is closed, and the gas enters the air filter 16 through the ball valve 9 and the explosion-proof pressure controller 17. After passing through the air filter 16, the impurities in the gas are filtered out and enter the supercharger main unit through the air intake connecting hose 25 and the air intake valve 26.

[0055] In this process, if the explosion-proof pressure controller 17 detects abnormal gas pressure, it transmits a signal to the control box, and the machine reports a fault and shuts down. If the gas pressure abnormally increases to a certain value at this time, the air intake safety valve 24 releases pressure.

[0056] The explosion-proof main motor 22 drives the explosion-proof pressure sensor 18 to rotate through the center bracket 20 and the coupling 19. The gas is mixed with the oil in the booster main unit 28. After being pressurized to a certain pressure, it flows to the oil and gas barrel assembly through the injection pipe 15. At this time, the explosion-proof temperature sensor 14 detects the temperature and transmits the temperature data to the control cabinet in real time. When the temperature is higher than the set value, the controller reports a fault and shuts down.

[0057] The oil-liquid mixture is separated in the oil-gas barrel assembly 4, wherein the pressurized gas passes through the pressure maintaining valve 5, the explosion-proof pressure sensor 18 and the corresponding pipelines, and reaches the outlet of the air outlet pipe 32 after being cooled in the radiator 29 for on-site use by customers; on the other hand, the lubricating oil reaches the radiator 29 through the oil filter assembly 2 and the related pipelines, and returns to the oil filter assembly 2 after being cooled to continue to participate in compression. The explosion-proof pressure sensor 18 adjusts the corresponding action of the machine according to the exhaust pressure.

[0058] When the explosion-proof pressure sensor 18 detects that the pressure rises to a certain value, the explosion-proof electromagnetic stop valve 12 and the air inlet valve 26 are closed, the discharge explosion-proof electromagnetic valve 11 is opened, and the machine enters the unloading state.

[0059] When shutting down, the explosion-proof electromagnetic stop valve 12 and the air inlet valve 26 are closed, the discharge explosion-proof electromagnetic valve 11 is opened, and the main engine is closed after idling for a period of time.

[0060] The utility model adopts a twin-screw oil-injected compressor, which has the characteristics of small vibration, low noise and high efficiency; fewer wearing parts, lower maintenance cost, and more stable and reliable.

[0061] The air intake assembly of the utility model is specially designed and can be used in conjunction with a conventional air intake valve on a gas compressor to achieve specific functions. Moreover, because it has multiple protection devices (pressure reducing valve 13, explosion-proof pressure controller 17 and air intake safety valve 24), it has a wide range of applications.

[0062] The electrical part of the utility model adopts explosion-proof design and is suitable for use in explosive environments.

[0063] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An explosion-proof twin-screw oil-injected compressor for inert gas boosting, characterized in that: include: Air intake assembly, main engine compression assembly, oil-gas separation assembly, filter assembly, heat dissipation assembly, control assembly and housing (3); The air intake assembly is arranged on the housing (3), and comprises a ball valve (9), a one-way valve (10), a discharge explosion-proof electromagnetic valve (11), an explosion-proof electromagnetic stop valve (12), a pressure reducing valve (13), an air filter (16), an explosion-proof pressure controller (17), an air intake safety valve (24), an air intake connecting hose (25), an air intake valve (26), an air intake valve electromagnetic valve (27) and an air intake pipe (31). The air intake pipe (31) is fixedly connected to the housing (3). One end of the air intake pipe (31) is connected to the pressure reducing valve (13), the other end of the pressure reducing valve (13) is connected to the explosion-proof electromagnetic stop valve (12), the other end of the explosion-proof electromagnetic stop valve (12) is connected to the discharge explosion-proof electromagnetic valve (11), the other end of the discharge explosion-proof electromagnetic valve (11) is connected to the one-way valve (10), and the other end of the one-way valve (10) is connected to the ball valve (9). The main engine compression assembly is arranged in the housing (3), and the main engine compression assembly comprises an oil injection pipe (15), a coupling (19), a center bracket (20), a shock absorbing pad (21), an explosion-proof main motor (22) and a supercharger main engine (28). The supercharger main engine (28) is installed inside the housing (3), the output shaft of the explosion-proof main motor (22) is connected to the coupling (19), the other end of the coupling (19) is connected to the input end of the supercharger main engine (28), one end of the center bracket (20) supports the coupling (19), the other end of the center bracket (20) is fixed in the housing (3), and the lower end of the explosion-proof main motor (22) is provided with a shock absorbing pad (21); The oil-gas separation component is arranged in the housing (3), and comprises an oil-gas barrel assembly (4) and a pressure maintaining valve (5). The oil-gas barrel assembly (4) is installed inside the housing (3), the pressure maintaining valve (5) is installed on the oil-gas barrel assembly (4), and one end of the oil injection pipe (15) is connected to the oil-gas barrel assembly (4); The filter assembly is arranged on the oil and gas barrel assembly (4), and the filter assembly comprises an oil filter assembly (2). The oil filter assembly (2) is fixed on the oil and gas barrel assembly (4), and the oil filter assembly (2) is connected to the oil and gas barrel assembly (4); The heat dissipation component is arranged in the housing (3), and the heat dissipation component comprises an explosion-proof fan (23) and a radiator (29), the explosion-proof fan (23) is installed inside the housing (3), and the radiator (29) is installed on the housing (3) by means of screws; The control assembly is arranged in the housing (3), and comprises an explosion-proof control cabinet (1), an emergency stop button (7), a start switch (8), an explosion-proof temperature sensor (14) and an explosion-proof pressure sensor (18). The explosion-proof control cabinet (1) is installed inside the housing (3) by means of screws, the explosion-proof temperature sensor (14) is installed on the fuel injection pipe (15), the explosion-proof pressure sensor (18) is installed on the explosion-proof pressure controller (17), and the pressure maintaining valve (5) is connected to the explosion-proof pressure sensor (18).

2. The explosion-proof twin-screw oil-injected compressor for inert gas boosting according to claim 1, characterized in that: The other end of the ball valve (9) is connected to an explosion-proof pressure controller (17), the other end of the explosion-proof pressure controller (17) is connected to an air filter (16), and the other end of the air filter (16) is connected to an air intake safety valve (24).

3. The explosion-proof twin-screw oil-injected compressor for inert gas boosting according to claim 1, characterized in that: The other end of the air intake safety valve (24) is connected to the air intake connecting hose (25), the other end of the air intake connecting hose (25) is connected to the air intake valve (26), and the other end of the air intake valve (26) is connected to the air intake valve solenoid valve (27).

4. The explosion-proof twin-screw oil-injected compressor for inert gas boosting according to claim 1, characterized in that: The emergency stop button (7) is fixed on the housing (3), the emergency stop button (7) is electrically connected to the explosion-proof control cabinet (1), the start switch (8) is fixed on the housing (3), the start switch (8) is electrically connected to the explosion-proof control cabinet (1), and the other end of the fuel injection pipe (15) is connected to the explosion-proof control cabinet (1).

5. The explosion-proof twin-screw oil-injected compressor for inert gas boosting according to claim 1, characterized in that: The outlet pipe (32) is fixed on the outer shell (3), the radiator (29) is connected to the outlet pipe (32), the radiator (29) is connected to the oil filter assembly (2), the exhaust pressure gauge (6) is fixed on the outer shell (3), the exhaust pressure gauge (6) is connected to the outlet pipe (32), the intake pressure gauge (30) is fixed on the outer shell (3), and the intake pressure gauge (30) is connected to the intake pipe (31).

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