Underground gas detection device for well maintenance

Abstract

The utility model discloses an underground gas detection device for well maintenance, which relates to the technical field of gas detection, and comprises a rolling mechanism and a protective frame, the rolling mechanism is connected with a lifting rope, the other end of the lifting rope is connected with a protective cover, the protective frame is provided with a limiting frame, the protective cover is in threaded connection with a threaded rod, and the threaded rod is connected with the lifting rope. A clamping frame is rotatably connected to one end of the threaded rod, a gas detector is clamped between the clamping frame and the limiting frame, a detection head is arranged on the gas detector, a protective net cover is mounted at one end of the limiting frame, an inflatable cushion is arranged in the protective frame, and the protective frame is connected with the protective cover through mounting bolts. The protection frame is connected with an arc-shaped protection plate through a buffer assembly; according to the gas detector, through the arrangement of the protective cover, effective protective measures are provided while the use of the detection head is not influenced, and through the arrangement of the buffer assembly, the gas detector can be subjected to buffer protection.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a downhole gas detection device for well maintenance. Background Technology

[0002] Various harmful gases may accumulate inside the well, such as methane (marsh gas), carbon monoxide, carbon dioxide, hydrogen sulfide, and ammonia. These gases can reach dangerous concentrations in a confined space. Therefore, gas detection devices are needed to detect and control the concentration of these harmful gases in a timely manner, thereby preventing workers from being harmed by gas poisoning or suffocation.

[0003] In related technologies, when detecting gas in wells, the detection method involves personnel wearing gas masks and carrying detection devices into the well for detection. When personnel carry the detection equipment into the well, they may face dangers such as suffocation, poisoning, and explosion.

[0004] Furthermore, an air pump can be used to extract gas from the bottom of the well for testing. However, during the gas extraction process, there may be changes in gas quality, leading to inaccurate test results.

[0005] When using a gas detector to detect gas, the detector is easily damaged by impacts when entering the well. Furthermore, existing gas detectors use protective boxes for protection, which can obstruct the detector and affect the accuracy of gas detection. Therefore, those skilled in the art have provided a downhole gas detection device for well maintenance to solve the problems mentioned in the background section. Utility Model Content

[0006] The purpose of this invention is to provide a downhole gas detection device for well maintenance, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A downhole gas detection device for well maintenance includes:

[0009] A winding mechanism, wherein the winding mechanism is connected to a lifting rope, and the other end of the lifting rope is connected to a protective cover;

[0010] A protective frame is provided with a limiting frame. A threaded rod is threadedly connected to the protective cover. A clamping frame is rotatably connected to one end of the threaded rod. A gas detector is clamped between the clamping frame and the limiting frame. The gas detector is provided with a detection head. A through hole for the detection head to pass through is opened on the clamping frame. A protective mesh cover is installed at one end of the limiting frame. An air-filled pad is provided inside the protective frame. The protective frame and the protective cover are connected by mounting bolts.

[0011] The protective frame is connected to an arc-shaped protective plate via a buffer assembly.

[0012] Preferably, the winding mechanism includes a servo motor, a winding roller, a connecting rod, and a telescopic rod. Both ends of the winding roller are connected to the connecting rod and the telescopic rod, respectively. The other ends of the connecting rod and the telescopic rod are rotatably connected to a support frame. The servo motor is mounted on the support frame, and the output end of the servo motor is connected to the extension end of the connecting rod that passes through the support frame. The suspension rope is wound onto the winding roller.

[0013] Preferably, a mounting plate is fixedly provided on the support frame, and each mounting plate is provided with a mounting thread hole.

[0014] Preferably, a rotating handle is fixedly provided at the end of the threaded rod away from the clamping frame, and the rotating handle is provided with an anti-slip layer.

[0015] Preferably, the protective net cover is provided with an installation ring, which is fixedly connected to the limiting frame by fixing bolts, and the protective net cover is provided with several reinforcing ribs.

[0016] Preferably, both the limiting frame and the clamping frame are provided with a rubber layer, and the rubber layer is in contact with the gas detector.

[0017] Preferably, the buffer assembly includes a buffer spring and a damper, the buffer spring being sleeved on the outside of the damper, and both ends of the buffer spring and the damper being connected to the protective frame and the arc-shaped protective plate, respectively.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, through the setting of the winding mechanism, allows the gas detector to detect gases at different depths in the well. Since the environment inside the well is complex and variable, the types and concentrations of gases may also vary with depth, thus meeting the detection needs of different depths and different gases.

[0020] 2. This utility model allows for the adjustment and clamping of different gas detectors by using a threaded rod. The protective cover provides effective protection without affecting the use of the detection head. The inflatable pad cushions the gas detector in the event of a collision. The buffer assembly further protects the gas detector. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a downhole gas detection device for well maintenance in an embodiment of this application;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of a downhole gas detection device for well maintenance according to an embodiment of this application;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] In the diagram: 1. Suspension rope; 2. Protective cover; 3. Protective frame; 4. Limiting frame; 5. Threaded rod; 6. Clamping frame; 7. Gas detector; 8. Detection head; 9. Through hole; 10. Protective net cover; 11. Inflatable cushion; 12. Arc-shaped protective plate; 13. Servo motor; 14. Take-up roller; 15. Telescopic rod; 16. Support frame; 17. Mounting plate; 18. Mounting threaded hole; 19. Rotary handle; 20. Anti-slip layer; 21. Mounting ring; 22. Fixing bolt; 23. Reinforcing rib; 24. Rubber layer; 25. Mounting bolt; 26. Buffer spring; 27. Damper; 28. Connecting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-3 This utility model provides a technical solution:

[0027] A downhole gas detection device for well maintenance includes:

[0028] The winding mechanism is connected to a lifting rope 1, and the other end of the lifting rope 1 is connected to a protective cover 2. The winding mechanism includes a servo motor 13, a winding roller 14, a connecting rod 28, and a telescopic rod 15. The two ends of the winding roller 14 are respectively connected to the connecting rod 28 and the telescopic rod 15. The other ends of the connecting rod 28 and the telescopic rod 15 are rotatably connected to a support frame 16. The servo motor 13 is mounted on the support frame 16, and the output end of the servo motor 13 is connected to the extension end of the connecting rod 28 that passes through the support frame 16. The lifting rope 1 is wound on the winding roller 14.

[0029] When the gas detector 7 is lowered into the well, the servo motor 13 drives the winding roller 14 to rotate via the connecting rod 28, thereby controlling the winding of the hoisting rope 1 and controlling the detection height of the gas detector 7. The gas detector 7 can be adjusted to detect gases at different depths in the well. Since the environment inside the well is complex and variable, the types and concentrations of gases may also vary with depth, thus meeting the detection needs of different depths and different gases. The telescopic rod 15 can adjust the distance between the two support frames 16, thereby adjusting the installation at the wellhead.

[0030] Furthermore, a mounting plate 17 is fixedly provided on the support frame 16, and each mounting plate 17 is provided with a mounting thread hole 18.

[0031] When installing the support frame 16 at the wellhead, use bolts to connect it to the mounting threaded holes 18 to install and fix the mounting plate 17.

[0032] The protective frame 3 has a limiting frame 4 on it. The protective cover 2 is threadedly connected to a threaded rod 5. One end of the threaded rod 5 is rotatably connected to a clamping frame 6. The end of the threaded rod 5 away from the clamping frame 6 is fixedly provided with a handle 19. The handle 19 is provided with an anti-slip layer 20. A gas detector 7 is clamped between the clamping frame 6 and the limiting frame 4. The gas detector 7 is provided with a detection head 8. The clamping frame 6 has a through hole 9 for the detection head 8 to pass through. A protective net cover 10 is installed at one end of the limiting frame 4. An air cushion 11 is provided inside the protective frame 3.

[0033] When fixing the gas detector 7, place the gas detector 7 inside the protective frame 3, with one end of the gas detector 7 engaged in the limiting frame 4, and the detection head 8 passing through the through hole 9. Then, rotate the handle 19, which can drive the clamping frame 6 to move through the threaded rod 5. The clamping frame 6 and the limiting frame 4 clamp and fix the gas detector 7, and the threaded rod 5 can adjust the movement of the clamping frame 6, thereby adjusting and clamping different gas detectors 7.

[0034] The anti-slip layer 20 can increase the friction of the handle 19, making it easier to rotate the handle 19. The protective net cover 10 can protect the detection head 8 and reduce the impact of the detection head 8. In addition, the inflatable pad 11 can buffer the impact when the protective frame 3 is hit, reducing the impact of the gas detector 7.

[0035] Specifically, the protective frame 3 and the protective cover 2 are connected by mounting bolts 25. The protective net cover 10 is provided with a mounting ring 21. The mounting ring 21 is fixedly connected to the limiting frame 4 by fixing bolts 22. The protective net cover 10 is provided with several reinforcing ribs 23. The limiting frame 4 and the clamping frame 6 are both provided with rubber layers 24. The rubber layers 24 are in contact with the gas detector 7.

[0036] When installing the protective cover 2, use the mounting bolts 25 to fix the protective cover 2 to the protective frame 3. The installation ring 21 and fixing bolts 22 make it easy to replace and disassemble the protective net cover 10. The setting of several reinforcing ribs 23 can improve the strength of the protective net cover 10, reduce the deformation of the protective net cover 10 when it is hit, and improve the protective effect of the protective net cover 10.

[0037] The rubber layer 24 reduces wear on the gas detector 7 when the limiting frame 4 and the clamping frame 6 clamp and fix the gas detector 7.

[0038] The protective frame 3 is connected to the arc-shaped protective plate 12 through a buffer assembly. The buffer assembly includes a buffer spring 26 and a damper 27. The buffer spring 26 is sleeved on the outside of the damper 27. The two ends of the buffer spring 26 and the damper 27 are respectively connected to the protective frame 3 and the arc-shaped protective plate 12.

[0039] When the arc-shaped protective plate 12 is impacted, the buffer spring 26 and the damper 27 can buffer the protective plate and further protect the gas detector 7.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 downhole gas detection device for well maintenance, characterized in that, include: A winding mechanism is connected to a lifting rope (1), and a protective cover (2) is connected to the other end of the lifting rope (1). A protective frame (3) is provided with a limiting frame (4). A threaded rod (5) is threadedly connected to the protective cover (2). A clamping frame (6) is rotatably connected to one end of the threaded rod (5). A gas detector (7) is clamped between the clamping frame (6) and the limiting frame (4). A detection head (8) is provided on the gas detector (7). A through hole (9) for the detection head (8) to pass through is opened on the clamping frame (6). A protective mesh cover (10) is installed at one end of the limiting frame (4). An air cushion (11) is provided inside the protective frame (3). The protective frame (3) and the protective cover (2) are connected by mounting bolts (25). The protective frame (3) is connected to an arc-shaped protective plate (12) via a buffer assembly.

2. The downhole gas detection device for well maintenance according to claim 1, characterized in that: The winding mechanism includes a servo motor (13), a winding roller (14), a connecting rod (28), and a telescopic rod (15). The two ends of the winding roller (14) are connected to the connecting rod (28) and the telescopic rod (15) respectively. The other ends of the connecting rod (28) and the telescopic rod (15) are rotatably connected to a support frame (16). The servo motor (13) is mounted on the support frame (16), and the output end of the servo motor (13) is connected to the extension end of the connecting rod through the support frame (16). The suspension rope (1) is wound on the winding roller (14).

3. The downhole gas detection device for well maintenance according to claim 2, characterized in that: The support frame (16) is fixedly provided with a mounting plate (17), and each mounting plate (17) is provided with a mounting thread hole (18).

4. The downhole gas detection device for well maintenance according to claim 1, characterized in that: The threaded rod (5) is fixedly provided with a handle (19) at one end away from the clamping frame (6), and the handle (19) is provided with an anti-slip layer (20).

5. The downhole gas detection device for well maintenance according to claim 1, characterized in that: The protective mesh cover (10) is provided with an installation ring (21), which is fixedly connected to the limiting frame (4) by a fixing bolt (22). The protective mesh cover (10) is provided with a number of reinforcing ribs (23).

6. The downhole gas detection device for well maintenance according to claim 1, characterized in that: Both the limiting frame (4) and the clamping frame (6) are provided with a rubber layer (24), and the rubber layer (24) is in contact with the gas detector (7).

7. The downhole gas detection device for well maintenance according to claim 1, characterized in that: The buffer assembly includes a buffer spring (26) and a damper (27). The buffer spring (26) is sleeved on the outside of the damper (27). The buffer spring (26) and the damper (27) are respectively connected to the protective frame (3) and the arc-shaped protective plate (12).

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