A gas monitoring device for oil field well site operations

Abstract

The present invention relates to the technical field of gas monitoring equipment, and in particular to a gas monitoring device for oilfield well site operations, comprising a tracked vehicle and a monitoring box arranged on the tracked vehicle, an angle adjustment mechanism is arranged on the top of the monitoring box, an air intake pipe is arranged on the rotating end of the angle adjustment mechanism, one end of the air intake pipe is connected with the gas monitoring mechanism on the monitoring box through a rotating joint, the other end of the air intake pipe is fixedly connected with a rectangular cylinder, an isolation plate for isolating particulate matter and dust in the inhaled gas is arranged on the inner side of the rectangular cylinder, a cylinder is fixedly connected with the front side of the rectangular cylinder, an air inlet is opened on the side wall of the cylinder, and an outer frame is fixedly connected between the cylinder and the outer wall of the rectangular cylinder. The present invention can automatically clean the dust adhering to the inner wall of the cylinder while cleaning the dust on the surface of the isolation plate through the mutual cooperation of the cleaning mechanism and the driving mechanism, thereby greatly improving the automation efficiency of the device and increasing the gas monitoring effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of gas monitoring equipment, and in particular to a gas monitoring device for oilfield well site operations. Background Art

[0002] During the construction process at the oil field operation site, there may be some toxic gases, such as combustible gases, hydrogen sulfide, carbon monoxide and other toxic and harmful gases. Effectively detecting toxic and harmful gases at the operation site and taking precautions are important means to ensure the life and health of on-site workers. Therefore, it is necessary to monitor and analyze the gas composition and concentration through detection instruments to ensure the safety of oil field site workers.

[0003] An isolation plate is installed inside the existing monitoring device to filter the drawn gas, so as to prevent dust in the air of the oil field well site from entering the monitoring box and affecting the service life of the monitoring equipment, and to improve the monitoring effect of the device.

[0004] However, there are still some defects in the existing monitoring process. Since the existing monitoring device can only automatically clean the isolation plate, during the cleaning process and the air intake monitoring process, the dust and impurities in the inhaled air and the cleaned dust and impurities are easily adhered to the air intake pipe. However, the device cannot automatically clean. Therefore, under long-term operation, thick dust and impurities will accumulate on the inner wall of the pipe on the front side of the isolation plate, which will not only affect the exhaust effect, but sometimes will follow the drawn gas into the isolation plate and be filtered again, greatly reducing the monitoring effect of the device.

[0005] Therefore, a gas monitoring device for oil field well site operation is proposed to solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a gas monitoring device for oil field well site operations.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a gas monitoring device for oilfield well site operation, comprising a crawler vehicle and a monitoring box arranged on the crawler vehicle, an angle adjustment mechanism is arranged on the top of the monitoring box, an air intake pipe is arranged on the rotating end of the angle adjustment mechanism, one end of the air intake pipe is connected with the gas monitoring mechanism on the monitoring box through a rotating joint, the other end of the air intake pipe is fixedly connected with a rectangular cylinder, an isolation plate for isolating particulate matter and dust in the inhaled gas is arranged on the inner side of the rectangular cylinder, a cylinder is fixedly connected to the front side of the rectangular cylinder, an air inlet is opened on the side wall of the cylinder, an outer frame is fixedly connected between the cylinder and the outer wall of the rectangular cylinder, and a cleaning mechanism for cleaning the isolation plate and the inner wall of the cylinder is arranged on the outer frame;

[0008] The cleaning mechanism includes an annular scraper, which is arranged on the inner side of the cylinder, the isolation plate is slidably connected to the inner side of the rectangular cylinder, the side wall of the isolation plate is fixedly connected to the side plate and is arranged through the outer wall of the rectangular cylinder, the upper and lower ends of the side wall of the annular scraper are fixedly connected to pull ropes, the other ends of the pull ropes pass through the outer wall of the cylinder and are fixedly connected to connecting plates, a return spring is fixedly connected between the side wall of the annular scraper and the inner side of the cylinder, an outlet is opened through the bottom end of the outer wall of the cylinder, and a driving mechanism for simultaneously pulling the isolation plate and the connecting plate to move is provided on the outer frame, and a cleaning brush for cleaning dust on the surface of the isolation plate is fixedly connected to the top end of the inner side of the outer frame.

[0009] In the above technical solution, further, guide blocks are fixedly connected to the upper and lower ends of the inner wall of the cylinder and one side close to the rectangular cylinder, an L-shaped groove is opened through the inner side of the guide block, and the corners of the L-shaped groove are set to smooth arc surfaces, and the pull ropes pass through the inner side of the L-shaped groove, and the outlet is set below the front side of the guide block.

[0010] In the above technical solution, further, the driving mechanism includes an electric telescopic cylinder, which is fixedly connected to the side wall of the outer frame, a connecting block is fixedly connected between the connecting plate and the side wall of the isolation plate, and the output end of the electric telescopic cylinder passes through the inner side of the outer frame and is fixedly connected to the side wall of the connecting block.

[0011] In the above technical solution, further, a baffle is provided inside the outlet, and the side wall of the baffle is fixedly connected to the side wall of the connecting plate, and a material guide frame with an inclined bottom is fixedly connected to the side wall of the outer frame and located below the outlet.

[0012] In the above technical solution, further, an upper sealing ring for sealing is fixedly connected to the outer wall of the isolation plate away from the side plate, and a lower sealing ring is fixedly connected to the side wall of the isolation plate and located outside the side plate.

[0013] In the above technical solution, further, a pair of guide grooves are opened on the inner side of the cylinder, and guide blocks are fixedly connected to the outer wall of the annular scraper and at positions corresponding to the guide grooves, and the guide blocks are slidably connected to the inner side of the guide grooves.

[0014] In the above technical solution, further, a discharge port is opened at the bottom end of the rear side of the outer frame, a storage seat for storing the air inlet pipe is fixedly connected to the top of the monitoring box, a support plate is fixedly connected to the rear side of the top end of the monitoring box and at a position corresponding to the discharge port, a top frame is fixedly connected to the rear side of the outer frame and above the discharge port, a rear plate for covering the discharge port is slidably connected to the inner side of the top frame, a right-angle block is fixedly connected to the rear side of the rear plate, and an extrusion rod for extruding the inclined surface of the right-angle block is fixedly connected to the top of the support plate.

[0015] In the above technical solution, further, the top of the extrusion rod is set to a smooth arc surface, a pair of upper springs are fixedly connected between the inner side of the top frame and the top of the rear plate, and a sliding groove is opened on the side wall of the top frame at a position corresponding to the right-angle block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can automatically clean the dust adhering to the inner wall of the cylinder while cleaning the dust on the surface of the isolation plate through the cooperation between the cleaning mechanism and the driving mechanism, thereby greatly improving the automation efficiency of the device and increasing the gas monitoring effect of the device.

[0018] 2. The present invention, through the arrangement of the discharge port, the extrusion rod, the top frame and other structures, can automatically open the discharge port when the air inlet pipe is retracted, and discharge the dust cleaned in the outer frame to the ground, thereby preventing the cleaned dust from falling on the device and affecting the service life of the electrical equipment in the device, and further improving the convenience performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front three-dimensional structure of the gas monitoring device of the present invention;

[0020] Figure 2 It is a rear perspective structural schematic diagram of the gas monitoring device of the present invention;

[0021] Figure 3 The appended Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 4 It is a schematic diagram of a three-dimensional structure of a rectangular tube in full cross-section on the side of the present invention;

[0023] Figure 5 The appended Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the front side of the outer frame of the present invention;

[0025] Figure 7 It is a schematic diagram of the overall appearance structure of the electric telescopic cylinder, the side plate and the isolation plate of the present invention;

[0026] Figure 8 It is a schematic diagram of the overall appearance structure of the pull rope, the annular scraper and the connecting plate of the present invention;

[0027] Fig. 9 It is a schematic diagram of the overall appearance structure of the top frame and the rear plate of the present invention.

[0028] In the figure: 1. crawler vehicle; 2. monitoring box; 3. angle adjustment mechanism; 4. air inlet pipe; 5. rectangular cylinder; 6. isolation plate; 7. cylinder; 8. air inlet; 9. outer frame; 10. annular scraper; 11. side plate; 12. pull rope; 13. connecting plate; 14. reset spring; 15. outlet; 16. cleaning brush; 17. guide block; 18. L-shaped groove; 19. electric telescopic cylinder; 20. connecting block; 21. baffle; 22. material guide frame; 23. upper sealing ring; 24. lower sealing ring; 25. guide groove; 26. guide block; 27. material outlet; 28. storage seat; 29. ​​support plate; 30. top frame; 31. rear plate; 32. right-angle block; 33. extrusion rod; 34. upper spring; 35. slide groove. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figure 1-9 The gas monitoring device for oilfield well site operation shown in the figure comprises a crawler vehicle 1 and a monitoring box 2 arranged on the crawler vehicle 1. The monitoring box 2 is a mature technology in the prior art and has functions such as remote control, gas monitoring and control of the crawler vehicle 1. It will not be described in detail here. An angle adjustment mechanism 3 is arranged on the top of the monitoring box 2. The angle adjustment mechanism 3 can mainly adjust the suction monitoring position of the air intake pipe 4, and can flip the air intake pipe 4 to reduce the overall volume of the device and make it more convenient for transportation. The rotating end of the angle adjustment mechanism 3 is provided with an air intake pipe 4. The air intake pipe 4 One end is connected to the gas monitoring mechanism on the monitoring box 2 through a rotating joint, and is connected through a rotating joint to prevent the intake pipe 4 from being folded when rotating on the angle adjustment mechanism 3. The other end of the intake pipe 4 is fixedly connected to a rectangular cylinder 5, and an isolation plate 6 for isolating particulate matter and dust in the inhaled gas is provided on the inner side of the rectangular cylinder 5. A cylinder 7 is fixedly connected to the front side of the rectangular cylinder 5, and an air inlet 8 is provided on the side wall of the cylinder 7. An outer frame 9 is fixedly connected between the cylinder 7 and the outer wall of the rectangular cylinder 5, and a cleaning mechanism for cleaning the isolation plate 6 and the inner wall of the cylinder 7 is provided on the outer frame 9;

[0032] The cleaning mechanism includes an annular scraper 10, which is arranged on the inner side of the cylinder 7. The isolation plate 6 penetrates and slides to be connected to the inner side of the rectangular cylinder 5. The side wall of the isolation plate 6 is fixedly connected to a side plate 11 and penetrates the outer wall of the rectangular cylinder 5. Through the setting of the side plate 11, when the isolation plate 6 is pulled out for cleaning, the inside of the rectangular cylinder 5 can be blocked to prevent excessive dust from being discharged. The upper and lower ends of the side wall of the annular scraper 10 are fixedly connected to a pull rope 12, and the other end of the pull rope 12 passes through the outer wall of the cylinder 7 and is fixedly connected to a connecting plate 13. The side wall of the annular scraper 10 and the inner wall of the cylinder 7 are fixedly connected to each other. A reset spring 14 is fixedly connected between them, and the reset spring 14 facilitates the quick reset of the annular scraper 10. An outlet 15 is provided at the bottom end of the outer wall of the cylinder 7. The outlet 15 facilitates the discharge of dust cleaned by the annular scraper 10. A driving mechanism for simultaneously pulling the isolation plate 6 and the connecting plate 13 to move is provided on the outer frame 9. A cleaning brush 16 for cleaning dust on the surface of the isolation plate 6 is fixedly connected to the top of the inner side of the outer frame 9. The cleaning brush 16 is arranged on the inner side of the outer frame 9, and the pull rope 12 passes through the brush on the cleaning brush 16, which will not hinder the normal pulling of the pull rope 12;

[0033] The driving mechanism includes an electric telescopic cylinder 19, which is fixedly connected to the side wall of the outer frame 9, and a connecting block 20 is fixedly connected between the connecting plate 13 and the side wall of the isolation plate 6, and the output end of the electric telescopic cylinder 19 passes through the inner side of the outer frame 9 and is fixedly connected to the side wall of the connecting block 20;

[0034] During the underground operation of the gas monitoring device, the crawler vehicle 1 is first controlled to move to the position to be monitored at the oil field site, and then the angle adjustment mechanism 3 is controlled to turn the air intake pipe 4 over and adjust the air intake pipe 4 to the designated monitoring position. Then the gas monitoring mechanism in the monitoring box 2 is controlled to start, and the air at the position to be monitored is sucked in through the air inlet 8, and then passes through the cylinder 7, the rectangular cylinder 5 and the air intake pipe 4 to enter the harmful gas content measuring instrument in the gas monitoring mechanism for measurement. In this process, the drawn gas will enter after filtering the dust through the isolation plate 6. After the monitoring is completed, when it is necessary to clean the dust on the surface of the isolation plate 6, the electric telescopic cylinder 19 of the driving mechanism can be controlled to operate, thereby pulling the connecting block 20, the isolation plate 6 and the connecting plate 13 to move, and then gradually pulling the isolation plate 6 out of the rectangular cylinder 5, so that the isolation plate 6 passes through the cleaning brush 16 in the outer frame 9 to sweep away the surface dust and impurities, and the swept dust falls into the outer frame 9 for centralized collection and treatment. At the same time, when the isolation plate 6 is pulled, the side plate 11 will be gradually pulled into the rectangular cylinder 5 to play a role as a barrier.

[0035] At the same time, through the movement of the connecting plate 13, the two pull ropes 12 will be pulled, and under the guidance of the L-shaped groove 18, the annular scraper 10 will be driven to slide on the inside of the cylinder 7, thereby scraping off the dust adhered to the inner wall of the cylinder 7, and gradually stretching the reset spring 14, and then the annular scraper 10 moves to above the outlet 15, and pushes the scraped dust into the outlet 15, and then the scraped dust falls into the guide frame 22 under its own gravity, and then slides into the outer frame 9 for centralized collection and treatment. Finally, after the cleaning is completed, the electric telescopic cylinder 19 can be controlled to drive in reverse to push back the isolation plate 6 and the connecting plate 13, so as to repeat the above operation in reverse for reset, so that the dust adhered to the inner wall of the cylinder 7 can be automatically cleaned while cleaning the dust on the surface of the isolation plate 6, thereby greatly improving the automation efficiency of the device and greatly increasing the gas monitoring effect of the device.

[0036] In order to improve the stability of the device during operation, guide blocks 17 are fixedly connected to the upper and lower ends of the inner wall of the cylinder 7 and the side close to the rectangular cylinder 5. An L-shaped groove 18 is opened through the inner side of the guide block 17, and the corner of the L-shaped groove 18 is set as a smooth arc surface to avoid long-term friction between the pull rope 12 and the corner of the L-shaped groove 18, thereby increasing the service life of the pull rope 12 and improving the smoothness of the device during operation. The pull rope 12 passes through the inside of the L-shaped groove 18, and the outlet 15 is set at the bottom of the front side of the guide block 17. Through the setting of the guide block 17 and the L-shaped groove 18, the sliding of the pull rope 12 can be guided, ensuring that when the connecting plate 13 moves, the annular scraper 10 can be pulled to slide on the inside of the cylinder 7 to clean dust, thereby improving the stability of the device during operation.

[0037] In order to prevent the dust collected in the outer frame 9 from being sucked out during the gas monitoring and exhaust process, a baffle 21 is provided on the inner side of the outlet 15, and the side wall of the baffle 21 is fixedly connected to the side wall of the connecting plate 13. Through the setting of the baffle 21, the outlet 15 can be blocked when the cleaning mechanism is not running, so as to prevent the dust collected in the outer frame 9 from being sucked out during the gas monitoring and exhaust process, thereby affecting the suction effect of the device. At the same time, the baffle 21 is connected to the connecting plate 13, and the baffle 21 can be driven to move simultaneously when the cleaning mechanism is running, so as to open the outlet 15 to ensure that the dust cleaned by the annular scraper 10 can be discharged. A guide frame 22 with an inclined bottom is fixedly connected to the side wall of the outer frame 9 and located below the outlet 15. Through the setting of the guide frame 22, it is convenient to guide the dust cleaned from the cylinder 7 into the outer frame 9, thereby avoiding subsequent unified discharge and avoiding falling on the monitoring device to affect the service life of the electrical equipment in the device.

[0038] In order to further improve the monitoring effect of the device, an upper sealing ring 23 for sealing is fixedly connected to the outer wall of the isolation plate 6 away from the side plate 11. Through the setting of the upper sealing ring 23, when the isolation plate 6 is pushed back, the upper sealing ring 23 can be squeezed against the outer wall of the rectangular tube 5, thereby sealing the groove where the isolation plate 6 moves, thereby improving the gas monitoring effect of the device. A lower sealing ring 24 is fixedly connected to the side wall of the isolation plate 6 and located on the outside of the side plate 11. Through the setting of the lower sealing ring 24, the other side of the isolation plate 6 can be sealed, further improving the gas monitoring effect of the device.

[0039] In order to improve the stability of the device during operation, a pair of guide grooves 25 are opened on the inner side of the cylinder 7, and guide blocks 26 are fixedly connected to the outer wall of the annular scraper 10 and at positions corresponding to the guide grooves 25, and the guide blocks 26 are slidably connected to the inner side of the guide grooves 25. Through the arrangement of the guide grooves 25 and the guide blocks 26, the sliding of the annular scraper 10 can be guided, thereby preventing the annular scraper 10 from rotating at will and improving the stability of the device during the cleaning process.

[0040] In order to automatically open the discharge port 27 when the air inlet pipe 4 is folded up, and discharge the dust cleaned in the outer frame 9 to the ground, a discharge port 27 is opened at the bottom end of the rear side of the outer frame 9. It should be noted that the discharge port 27 is set at the rear side of the outer frame 9 because the outer frame 9 will be turned over during the flipping of the air inlet pipe 4, so that the discharge port 27 on the flipped outer frame 9 is located at the bottom, which is convenient for collecting and discharging dust. A storage seat 28 for storing the air inlet pipe 4 is fixedly connected to the top of the monitoring box 2. The storage seat 28 can support the air inlet pipe 4. A support plate 29 is fixedly connected to the rear side of the top of the box 2 and at a position corresponding to the discharge port 27, a top frame 30 is fixedly connected to the rear side of the outer frame 9 and located above the discharge port 27, a rear plate 31 for covering the discharge port 27 is slidably connected to the inner side of the top frame 30, a right-angle block 32 is fixedly connected to the rear side of the rear plate 31, and an extrusion rod 33 for extruding the inclined surface of the right-angle block 32 is fixedly connected to the top of the support plate 29, the extrusion rod 33 is set at a position where it can squeeze the right-angle block 32, and as the right-angle block 32 gradually turns downward, it will gradually squeeze the right-angle block 32 to slide and open the rear plate 31;

[0041] The top of the extrusion rod 33 is set as a smooth arc surface. The top of the extrusion rod 33 is set as a smooth arc surface, which can better squeeze the inclined surface of the right-angle block 32, push the right-angle block 32 and the rear plate 31 to slide, and improve the silkiness of the device during operation. A pair of upper springs 34 are fixedly connected between the inner side of the top frame 30 and the top of the rear plate 31. Through the setting of the upper springs 34, it is convenient to push the rear plate 31 to quickly reset. The side wall of the top frame 30 and the corresponding position of the right-angle block 32 are provided with a slide groove 35. Through the setting of the slide groove 35, it is avoided to hinder the normal sliding of the right-angle block 32, thereby affecting the normal opening of the discharge port 27;

[0042] When the monitoring device needs to be retracted after use, the angle adjustment mechanism 3 is controlled to start the air intake pipe 4 to rotate. In the process of flipping the air intake pipe 4 to the storage seat 28, the outer frame 9 will gradually flip over the support plate 29, and then the air intake pipe 4 will continue to flip, and the right-angle block 32 will gradually flip over to the squeezing rod 33, and then the squeezing rod 33 will squeeze the inclined surface of the right-angle block 32, thereby pushing the right-angle block 32 to move, thereby driving the rear plate 31 to gradually slide into the top frame 30 and gradually compress the upper spring 34, thereby opening the discharge port 27, so that the dust collected in the outer frame 9 will be discharged under its own gravity, which can not only prevent the cleaned dust from falling directly on the device and affecting the service life of the electrical equipment in the device, but also can automatically clean the collected dust when the air intake pipe 4 is folded, greatly improving the convenience of the device. Finally, when the air intake pipe 4 is flipped and reset, the above operation will be repeated in reverse, and the rear plate 31 will be pushed back to its original position under the elastic force of the upper spring 34 to keep the discharge port 27 blocked.

[0043] The basic principles, main features and advantages of the present invention are shown and described above.

[0044] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A gas monitoring device for oilfield well site operation, comprising a crawler vehicle (1), and a monitoring box (2) arranged on the crawler vehicle (1), the top of the monitoring box (2) being provided with an angle adjustment mechanism (3), a rotating end of the angle adjustment mechanism (3) being provided with an air intake pipe (4), one end of the air intake pipe (4) being connected to the gas monitoring mechanism on the monitoring box (2) via a rotating joint, characterized in that: The other end of the air intake pipe (4) is fixedly connected to a rectangular cylinder (5), an isolation plate (6) for isolating particulate matter and dust in the inhaled gas is provided on the inner side of the rectangular cylinder (5), a cylinder (7) is fixedly connected to the front side of the rectangular cylinder (5), an air inlet (8) is provided on the side wall of the cylinder (7), an outer frame (9) is fixedly connected between the cylinder (7) and the outer wall of the rectangular cylinder (5), and a cleaning mechanism for cleaning the isolation plate (6) and the inner wall of the cylinder (7) is provided on the outer frame (9); The cleaning mechanism comprises an annular scraper (10), the annular scraper (10) being arranged on the inner side of the cylinder (7), the isolation plate (6) penetrating and slidably connected to the inner side of the rectangular cylinder (5), the side wall of the isolation plate (6) being fixedly connected to a side plate (11) and penetrating the outer wall of the rectangular cylinder (5), the upper and lower ends of the side wall of the annular scraper (10) being fixedly connected to a pull rope (12), the other ends of the pull rope (12) passing through the outer wall of the cylinder (7) being fixedly connected to a connecting plate (13), a return spring (14) being fixedly connected between the side wall of the annular scraper (10) and the inner side of the cylinder (7), an outlet (15) penetrating at the bottom end of the outer wall of the cylinder (7), a driving mechanism for simultaneously pulling the isolation plate (6) and the connecting plate (13) to move, and a cleaning brush (16) for cleaning dust on the surface of the isolation plate (6) being fixedly connected to the top end of the inner side of the outer frame (9); A pair of guide grooves (25) are formed on the inner side of the cylinder (7), and guide blocks (26) are fixedly connected to the outer wall of the annular scraper (10) at positions corresponding to the guide grooves (25), and the guide blocks (26) are slidably connected to the inner side of the guide grooves (25).

2. A gas monitoring device for oil field well site operation according to claim 1, characterized in that: Guide blocks (17) are fixedly connected at the upper and lower ends of the inner wall of the cylinder (7) and at the side close to the rectangular cylinder (5); an L-shaped groove (18) is provided through the inner side of the guide block (17); the corner of the L-shaped groove (18) is provided with a smooth arc surface; the pull rope (12) passes through the inner side of the L-shaped groove (18); and the outlet (15) is provided below the front side of the guide block (17).

3. A gas monitoring device for oilfield well site operations according to claim 1, characterized in that: The driving mechanism comprises an electric telescopic cylinder (19), the electric telescopic cylinder (19) being fixedly connected to a side wall of the outer frame (9), a connecting block (20) being fixedly connected between the connecting plate (13) and the side wall of the isolation plate (6), and an output end of the electric telescopic cylinder (19) passing through the inner side of the outer frame (9) and being fixedly connected to the side wall of the connecting block (20).

4. A gas monitoring device for oil field well site operation according to claim 1, characterized in that: A baffle (21) is provided inside the outlet (15), and a side wall of the baffle (21) is fixedly connected to a side wall of the connecting plate (13). A material guide frame (22) with an inclined bottom is fixedly connected to a side wall of the outer frame (9) and located below the outlet (15).

5. The gas monitoring device for oil field well site operation according to claim 1, characterized in that: An upper sealing ring (23) for sealing is fixedly connected to the outer wall of the isolation plate (6) on the side away from the side plate (11), and a lower sealing ring (24) is fixedly connected to the side wall of the isolation plate (6) and located outside the side plate (11).

6. A gas monitoring device for oil field well site operation according to claim 1, characterized in that: A discharge port (27) is provided at the bottom rear end of the outer frame (9); a storage seat (28) for storing an air inlet pipe (4) is fixedly connected to the top of the monitoring box (2); a support plate (29) is fixedly connected to the rear side of the top end of the monitoring box (2) and at a position corresponding to the discharge port (27); a top frame (30) is fixedly connected to the rear side of the outer frame (9) and above the discharge port (27); a rear plate (31) for shielding the discharge port (27) is slidably connected to the inner side of the top frame (30); a right-angle block (32) is fixedly connected to the rear side of the rear plate (31); and an extrusion rod (33) for extruding the inclined surface of the right-angle block (32) is fixedly connected to the top of the support plate (29).

7. A gas monitoring device for oil field well site operation according to claim 6, characterized in that: The top of the extrusion rod (33) is configured as a smooth arc surface, a pair of upper springs (34) are fixedly connected between the inner side of the top frame (30) and the top of the rear plate (31), and a sliding groove (35) is provided on the side wall of the top frame (30) at a position corresponding to the right-angle block (32).

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