A shale gas wellhead air source supply device

Abstract

This application provides a shale gas wellhead air supply device, relating to the field of shale gas wellhead air supply technology. It includes a device base, on the top of which an air source unit is fixedly installed. The screw air compressor of the air source unit, in conjunction with an air storage tank, provides continuous and stable compressed air. A pressure relief valve prevents overpressure risks, and a pressure sensor in the air distribution box monitors the air pressure in real time. The control box adjusts the operating status of the screw air compressor to ensure stable output pressure. This constant pressure supply mode meets the air source stability requirements of wellhead valves, instruments, and other equipment, reducing malfunctions caused by pressure fluctuations. The filtration and purification components, including a pre-filter, dryer, and precision filter, sequentially perform dust removal, water removal, and fine filtration on the compressed air. The primary filter material and high-efficiency filter membrane effectively remove dust, oil mist, and moisture, preventing impurities from entering the wellhead equipment and causing wear or blockage, thus extending the equipment maintenance cycle and service life.

Description

Technical Field

[0001] This utility model relates to the field of shale gas wellhead air supply technology, and in particular to a shale gas wellhead air supply device. Background Technology

[0002] In shale gas extraction, the normal operation of wellhead equipment depends on a stable and clean air supply. This air supply is primarily used for critical processes such as wellhead valve operation, instrument purging, and equipment cooling. Currently, there are numerous problems with the air supply to shale gas wellheads.

[0003] Existing technologies suffer from insufficient air source stability. Traditional air compressors exhibit large output pressure fluctuations, making it difficult to meet the constant pressure air source requirements of wellhead equipment. This can easily lead to valve opening and closing failures or instrument measurement errors. Secondly, the cleanliness of the air source is low. The wellhead environment is often dusty and humid. Impurities and moisture in untreated air sources can wear down equipment components, clog pipelines, and shorten equipment lifespan. These problems restrict the efficiency and safety of shale gas extraction. Therefore, we propose a shale gas wellhead air source supply device. Utility Model Content

[0004] In view of this, this application provides a shale gas wellhead air supply device, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A shale gas wellhead air supply device includes a device base, an air source unit fixedly installed on the top of the device base, a main gas transmission pipe fixedly installed at the output end of the air source unit, a filter and purification assembly provided on the outside of the main gas transmission pipe, a gas distribution box fixedly installed at the end of the main gas transmission pipe, multiple sets of branch gas transmission pipes fixedly installed on the gas distribution box, a protective fence fixedly installed on the top of the device base, and a control box fixedly installed on the top of the protective fence, the control box being electrically connected to the air source unit.

[0007] Preferably, the air source unit includes a screw air compressor, an air tank, a pressure relief valve, and an air pump. The screw air compressor and the air tank are fixedly installed on the top of the device base. The output end of the screw air compressor is connected to the air tank. The pressure relief valve is fixedly installed on the top of the air tank. The air tank is connected to the main air supply pipe. The air pump is fixedly installed on the top of the air tank. The suction end of the air pump is connected to the air tank. The main air supply pipe is fixedly installed on the output end of the air pump.

[0008] Preferably, the filtration and purification assembly includes a pre-filter, a dryer, and a precision filter. The pre-filter, dryer, and precision filter are sequentially fixedly installed on the outside of the main gas supply pipe. The inner side of the pre-filter is provided with a primary filter material, and the inner side of the precision filter is provided with a high-efficiency filter membrane.

[0009] Preferably, a pressure sensor and a pressure gauge are fixedly installed on the inner side of the gas distribution box, and a flow control valve and a check valve are fixedly installed on the outer side of the branch gas transmission pipe, wherein the flow control valve is electrically connected to the control box.

[0010] Preferably, a movable wheel is fixedly installed at the bottom of the device base, a wheel lock is provided on the outer side of the movable wheel, and a push-pull handrail is fixedly installed on one side of the protective fence.

[0011] Preferably, the surface of the control box is provided with a touch screen, start / stop buttons and an emergency stop switch, and the inside of the control box is fixedly installed with a PLC controller and a data logger, and the PLC controller is electrically connected to the touch screen and the data logger respectively.

[0012] Preferably, a soundproof cover is fixedly installed on the outside of the screw air compressor, sound-absorbing cotton is fixedly installed on the inside of the soundproof cover, and a level gauge and a drain valve are fixedly installed on the outside of the air tank.

[0013] Preferably, both the main gas pipeline and the branch gas pipeline are fixedly equipped with an insulation layer on their outer sides, and the end of the branch gas pipeline is fixedly equipped with a quick connector, with a dust cover provided on the outer side of the quick connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) The present invention provides a shale gas wellhead air supply device. The screw air compressor of the air source unit, together with the air storage tank, can provide continuous and stable compressed air. The pressure relief valve avoids the risk of overpressure. The pressure sensor of the air distribution box monitors the air pressure in real time. The operating status of the screw air compressor is adjusted by the control box to ensure stable output pressure. This constant pressure supply mode meets the requirements of wellhead valves, instruments and other equipment for air source stability and reduces failures caused by pressure fluctuations. The pre-filter, dryer and precision filter of the filtration and purification component perform dust removal, water removal and fine filtration treatment on the compressed air in sequence. The primary filter material and high efficiency filter membrane effectively remove dust, oil mist and moisture, prevent impurities from entering the wellhead equipment and causing wear or blockage, and extend the equipment maintenance cycle and service life.

[0016] (2) The present invention provides a shale gas wellhead air supply device. The gas distribution box realizes multi-way air supply distribution through multiple sets of branch gas transmission pipes. The flow control valve can adjust the air supply of each branch individually to meet the differentiated needs of different wellhead equipment. The quick connector facilitates quick connection or replacement of equipment. The moving wheels and push-pull handles enable the device to be flexibly moved to different wellhead positions, improving the supply flexibility. The PLC controller of the control box receives signals from the pressure sensor and the flow control valve, and displays parameters such as air pressure and flow rate in real time through the touch screen. The data logger stores the operating data, which is convenient for traceability and analysis. The emergency stop switch and the buzzer warning function respond in time when the parameters are abnormal, reducing the risk of omissions in manual monitoring and ensuring the safety of wellhead operations.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a shale gas wellhead air supply device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of a three-dimensional view of a partial structure of a shale gas wellhead air supply device according to an embodiment of this application;

[0020] Figure 3 A schematic diagram showing a three-dimensional view of a portion of the structure of a fan source unit provided according to an embodiment of this application is provided;

[0021] Figure 4 A schematic diagram showing a three-dimensional view of a portion of the structure of a filtration and purification component provided according to an embodiment of this application is shown.

[0022] Figure label:

[0023] 1. Device base; 2. Air source unit; 21. Screw air compressor; 22. Air tank; 23. Pressure relief valve; 24. Sound insulation cover; 25. Sound-absorbing cotton; 26. Liquid level gauge; 27. Drain valve; 28. Air pump; 3. Main air supply pipe; 4. Filtration and purification components; 41. Pre-filter; 42. Dryer; 43. Precision filter; 44. Primary filter media; 45. High-efficiency filter membrane; 5. Air distribution box; 51. Pressure sensor; 52. Pressure gauge; 6. Branch air supply pipe; 61. Flow control valve; 62. Check valve; 7. Control box; 71. Touch screen; 72. Start / stop button; 73. Emergency stop switch; 74. PLC controller; 75. Data logger; 8. Casters; 81. Wheel lock; 9. Protective fence; 10. Push-pull handrail; 11. Insulation layer; 12. Quick connector; 13. Dust cover. Detailed Implementation

[0024] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0025] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] refer to Figure 1-4 A shale gas wellhead air supply device includes a device base 1, an air source unit 2 fixedly installed on the top of the device base 1, a main gas transmission pipe 3 fixedly installed at the output end of the air source unit 2, a filter purification component 4 provided on the outside of the main gas transmission pipe 3, a gas distribution box 5 fixedly installed at the end of the main gas transmission pipe 3, multiple sets of branch gas transmission pipes 6 fixedly installed on the gas distribution box 5, a protective fence 9 fixedly installed on the top of the device base 1, a control box 7 fixedly installed on the top of the protective fence 9, and the control box 7 is electrically connected to the air source unit 2.

[0027] In this embodiment, the air source unit 2 includes a screw air compressor 21, an air tank 22, a pressure relief valve 23, and an air pump 28. The screw air compressor 21 and the air tank 22 are fixedly installed on the top of the device base 1. The output end of the screw air compressor 21 is connected to the air tank 22. The pressure relief valve 23 is fixedly installed on the top of the air tank 22. The air tank 22 is connected to the main air supply pipe 3. The air pump 28 is fixedly installed on the top of the air tank 22. The suction end of the air pump 28 is connected to the air tank 22. The main air supply pipe 3 is fixedly installed on the output end of the air pump 28. The screw air compressor 21 of the air source unit 2, together with the air tank 22, can provide continuous and stable compressed air. The pressure relief valve 23 avoids the risk of overpressure. The pressure sensor 51 of the air distribution box 5 monitors the air pressure in real time. The operating status of the screw air compressor 21 is adjusted through the control box 7 to ensure stable output pressure. This constant pressure supply mode meets the requirements of wellhead valves, instruments, and other equipment for air source stability and reduces failures caused by pressure fluctuations.

[0028] In this embodiment, the filtration and purification assembly 4 includes a pre-filter 41, a dryer 42, and a precision filter 43. The pre-filter 41, dryer 42, and precision filter 43 are sequentially fixedly installed on the outside of the main air supply pipe 3. A primary filter material 44 is provided on the inside of the pre-filter 41, and a high-efficiency filter membrane 45 is provided on the inside of the precision filter 43. The pre-filter 41, dryer 42, and precision filter 43 of the filtration and purification assembly 4 sequentially perform dust removal, water removal, and fine filtration treatment on the compressed air. The primary filter material 44 and the high-efficiency filter membrane 45 effectively remove dust, oil mist, and moisture, preventing impurities from entering the wellhead equipment and causing wear or blockage, thus extending the equipment maintenance cycle and service life.

[0029] In this embodiment, a pressure sensor 51 and a pressure gauge 52 are fixedly installed on the inner side of the gas distribution box 5, and a flow control valve 61 and a one-way valve 62 are fixedly installed on the outer side of the branch gas pipeline 6. The flow control valve 61 is electrically connected to the control box 7. The gas distribution box 5 realizes multi-source air distribution through multiple sets of branch gas pipelines 6. The flow control valve 61 can adjust the gas supply of each branch individually to meet the differentiated needs of different wellhead equipment. The quick connector 12 facilitates quick connection or replacement of equipment.

[0030] In this embodiment, a movable wheel 8 is fixedly installed at the bottom of the device base 1, and a wheel lock 81 is provided on the outside of the movable wheel 8. A push-pull handrail 10 is fixedly installed on one side of the protective fence 9. The movable wheel 8 and the push-pull handrail 10 enable the device to be flexibly moved to different wellhead positions, improving the supply flexibility.

[0031] In this embodiment, the surface of the control box 7 is equipped with a touch screen 71, a start / stop button 72, and an emergency stop switch 73. A PLC controller 74 and a data logger 75 are fixedly installed inside the control box 7. The PLC controller 74 is electrically connected to the touch screen 71 and the data logger 75. The PLC controller 74 of the control box 7 receives signals from the pressure sensor 51 and the flow control valve 61, and displays parameters such as air pressure and flow rate in real time through the touch screen 71. The data logger 75 stores operating data for easy traceability and analysis. The emergency stop switch 73 and the buzzer warning function respond promptly when parameters are abnormal, reducing the risk of oversights in manual monitoring and ensuring the safety of wellhead operations.

[0032] In this embodiment, a soundproof cover 24 is fixedly installed on the outside of the screw air compressor 21, and a sound-absorbing cotton 25 is fixedly installed on the inside of the soundproof cover 24. A level gauge 26 and a drain valve 27 are fixedly installed on the outside of the air tank 22. The soundproof cover 24 and the sound-absorbing cotton 25 on the outside of the screw air compressor 21 significantly reduce operating noise and reduce hearing damage to on-site operators. The protective fence 9 prevents personnel from accidentally touching the equipment, and the insulation layer 11 prevents the pipeline from frosting in low-temperature environments, thus affecting the air supply and improving the safety and environmental adaptability of the device.

[0033] In this embodiment, insulation layers 11 are fixedly installed on the outer sides of both the main gas pipeline 3 and the branch gas pipeline 6, and quick connectors 12 are fixedly installed at the ends of the branch gas pipeline 6. Dust covers 13 are provided on the outer sides of the quick connectors 12. The insulation layers 11 of the main gas pipeline 3 and the branch gas pipeline 6 reduce heat loss and condensation. The drain valve 27 of the gas storage tank 22 facilitates regular cleaning of impurities, and the dust cover 13 protects the quick connectors 12 from contamination. The modular design of each component simplifies the maintenance process and reduces the maintenance cost for long-term use.

[0034] Specifically, the screw air compressor 21 of the air source unit 2, in conjunction with the air storage tank 22, can provide a continuous and stable supply of compressed air. The pressure relief valve 23 prevents the risk of overpressure. The pressure sensor 51 of the air distribution box 5 monitors the air pressure in real time. The operating status of the screw air compressor 21 is adjusted through the control box 7 to ensure stable output pressure. This constant pressure supply mode meets the requirements of wellhead valves, instruments and other equipment for air source stability and reduces failures caused by pressure fluctuations. The pre-filter 41, dryer 42 and precision filter 43 of the filtration and purification assembly 4 sequentially perform dust removal, water removal and fine filtration treatment on the compressed air. The primary filter material 44 and the high-efficiency filter membrane 45 effectively remove dust, oil mist and moisture, preventing impurities from entering the wellhead equipment and causing wear or blockage, thus extending the equipment maintenance cycle and service life.

[0035] The gas distribution box 5 distributes multiple air sources through multiple branch gas pipelines 6. The flow control valve 61 can individually adjust the gas supply of each branch to meet the differentiated needs of different wellhead equipment. The quick connector 12 facilitates quick connection or replacement of equipment. The moving wheels 8 and push-pull handles 10 enable the device to be flexibly moved to different wellhead locations, improving supply flexibility. The PLC controller 74 of the control box 7 receives signals from the pressure sensor 51 and the flow control valve 61, and displays parameters such as air pressure and flow rate in real time through the touch screen 71. The data logger 75 stores operating data for easy traceability and analysis. The emergency stop switch 73 and the buzzer warning function respond promptly when parameters are abnormal, reducing the risk of oversight by manual monitoring and ensuring the safety of wellhead operations.

[0036] The soundproof cover 24 and sound-absorbing cotton 25 on the outside of the screw air compressor 21 significantly reduce operating noise and reduce hearing damage to on-site operators; the protective fence 9 prevents personnel from accidentally touching the equipment, and the insulation layer 11 prevents pipeline frost from affecting air supply in low-temperature environments, thereby improving the safety and environmental adaptability of the device.

[0037] The insulation layer 11 of the main gas pipeline 3 and the branch gas pipeline 6 reduces heat loss and condensation; the drain valve 27 of the gas storage tank 22 facilitates regular cleaning of impurities, and the dust cover 13 protects the quick connector 12 from contamination; the modular design of each component simplifies the maintenance process and reduces the maintenance cost for long-term use.

[0038] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shale gas wellhead air supply device, characterized in that, include: The device base (1) has a fan unit (2) fixedly installed on its top. The output end of the fan unit (2) has a main air supply pipe (3) fixedly installed. A filter purification component (4) is provided on the outside of the main air supply pipe (3). A gas distribution box (5) is fixedly installed at the end of the main air supply pipe (3). Multiple branch air supply pipes (6) are fixedly installed on the gas distribution box (5). A protective fence (9) is fixedly installed on the top of the device base (1). A control box (7) is fixedly installed on the top of the protective fence (9). The control box (7) is electrically connected to the fan unit (2).

2. The shale gas wellhead air supply device according to claim 1, characterized in that, The air source unit (2) includes a screw air compressor (21), an air tank (22), a pressure relief valve (23), and an air pump (28). The screw air compressor (21) and the air tank (22) are fixedly installed on the top of the device base (1). The output end of the screw air compressor (21) is connected to the air tank (22). The pressure relief valve (23) is fixedly installed on the top of the air tank (22). The air tank (22) is connected to the main air supply pipe (3). The air pump (28) is fixedly installed on the top of the air tank (22). The suction end of the air pump (28) is connected to the air tank (22). The main air supply pipe (3) is fixedly installed on the output end of the air pump (28).

3. The shale gas wellhead air supply device according to claim 1, characterized in that, The filtration and purification assembly (4) includes a pre-filter (41), a dryer (42), and a precision filter (43). The pre-filter (41), dryer (42), and precision filter (43) are sequentially fixedly installed on the outside of the main gas supply pipe (3). The pre-filter (41) is provided with a primary filter material (44) on its inner side, and the precision filter (43) is provided with a high-efficiency filter membrane (45) on its inner side.

4. The shale gas wellhead air supply device according to claim 1, characterized in that, A pressure sensor (51) and a pressure gauge (52) are fixedly installed on the inner side of the gas distribution box (5), and a flow control valve (61) and a check valve (62) are fixedly installed on the outer side of the branch gas transmission pipe (6). The flow control valve (61) is electrically connected to the control box (7).

5. The shale gas wellhead air supply device according to claim 1, characterized in that, The bottom of the device base (1) is fixedly equipped with a movable wheel (8), and a wheel lock (81) is provided on the outside of the movable wheel (8). A push-pull handrail (10) is fixedly installed on one side of the protective fence (9).

6. The shale gas wellhead air supply device according to claim 1, characterized in that, The surface of the control box (7) is provided with a touch screen (71), a start / stop button (72) and an emergency stop switch (73). A PLC controller (74) and a data logger (75) are fixedly installed inside the control box (7). The PLC controller (74) is electrically connected to the touch screen (71) and the data logger (75) respectively.

7. The shale gas wellhead air supply device according to claim 2, characterized in that, A soundproof cover (24) is fixedly installed on the outside of the screw air compressor (21), and a sound-absorbing cotton (25) is fixedly installed on the inside of the soundproof cover (24). A level gauge (26) and a drain valve (27) are fixedly installed on the outside of the air tank (22).

8. The shale gas wellhead air supply device according to claim 1, characterized in that, The main gas pipe (3) and the branch gas pipe (6) are both fixedly installed with a heat insulation layer (11). The end of the branch gas pipe (6) is fixedly installed with a quick connector (12). The quick connector (12) is provided with a dust cover (13) on its outside.

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