Coal mine coalbed methane well testing detection device

Abstract

The utility model discloses a coal mine coalbed methane well test detection device, and particularly relates to the technical field of well test safety detection, which comprises a fixed frame, a plurality of gas detectors are arranged in the fixed frame, and a gas inlet part is arranged on the plurality of gas detectors; the air outlet end and the air inlet end of the air suction pump are fixedly connected with an air outlet pipe and an air inlet pipe respectively; a rotating pipe is arranged on the inner side of the fixing plate, the other end of the rotating pipe is fixedly connected with a rotating rod, and an extending pipe is wound around the outer end of the rotating pipe. According to the multi-gas detector, the multi-gas detector is clamped and fixed in the fixing frame, then the gas inlet part and the gas outlet pipe are connected together, and the extension pipe is retracted and released by rotating the rotating pipe, so that the extension length of the extension pipe can be adjusted, gas at different depths in a test well can be directly detected, and the detection efficiency is improved. And the situation that harmful gas in the test well harms the body health of workers is effectively avoided, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of well test safety testing technology, specifically to a coalbed methane well test testing device for coal mines. Background Technology

[0002] Coalbed methane (CBM) refers to hydrocarbon gases stored in coal seams, primarily composed of methane. These gases are mainly adsorbed onto the surface of coal matrix particles, with some remaining free in coal pores or dissolved in coal seam water. It is a by-product of coal mining and belongs to unconventional natural gas. It has emerged as a clean and high-quality energy source and chemical feedstock internationally in the last one or two decades. Well testing is required during CBM extraction.

[0003] Currently, when testing coalbed methane in coal mines, gas detection is mostly carried out using multi-gas detectors. Since these detectors are mostly handheld, workers often have to hold them while testing the gas inside the well, which may lead to the inhalation of harmful gases and affect their health. Utility Model Content

[0004] The purpose of this invention is to provide a coalbed methane well testing device for coal mines to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coalbed methane well testing and detection device for coal mines, comprising:

[0006] A fixed frame, inside which a multi-gas detector is provided, and the multi-gas detector is provided with an air inlet;

[0007] An air pump is embedded in the bottom of a fixed frame. The air pump's outlet and inlet ends are respectively fixedly connected to an outlet pipe and an inlet pipe. The bottom end of the inlet part is inserted into the outlet pipe.

[0008] A fixed plate is fixedly installed on one side of the bottom of the fixed frame. A rotating tube is provided inside the fixed plate. One end of the air inlet pipe passes through one end of the rotating tube and is rotatably connected to the rotating tube through a sealed bearing. A rotating rod is fixedly connected to the other end of the rotating tube. One end of the rotating rod passes through the fixed plate and is rotatably connected to the fixed plate. An extension tube is wound around the outer end of the rotating tube. One end of the extension tube passes through the rotating tube and is connected to the inside of the rotating tube. A counterweight is fixedly installed at one end of the extension tube.

[0009] Preferably, one end of the rotating rod is provided with a rotating block, the rotating block is located on the outside of the fixed plate, one end of the rotating rod is fixedly provided with a square connecting rod, one end of the rotating block is provided with a square connecting groove, the square connecting rod is located inside the square connecting groove, one end of the square connecting rod is fixedly connected with a spring, and one end of the spring is fixedly connected to one end inside the square connecting groove, so as to facilitate the rotation of the rotating rod and the rotating tube.

[0010] Preferably, one end of the rotating block is integrally connected to a limiting rod, and the outer side of the fixing plate is provided with multiple limiting grooves. One end of the limiting rod is inserted into one of the limiting grooves to facilitate limiting and fixing the rotating block.

[0011] Preferably, the fixed frame is provided with two clamping plates inside, which clamp the two clamping plates on both sides of the multi-gas detector respectively. Threaded rods are rotatably connected to the outside of the clamping plates. One end of each of the two threaded rods passes through both sides of the fixed frame and is threadedly connected to both sides of the fixed frame. A throttle handle is fixedly provided at one end of each threaded rod to facilitate clamping and fixing the multi-gas detector.

[0012] Preferably, the clamping plate has a U-shaped cross-section.

[0013] Preferably, two guide rods are fixedly provided on the outer side of the clamping plate. The two guide rods are respectively located at the top and bottom of the threaded rod. One end of each of the four guide rods passes through both sides of the fixed frame and extends to the outer side of the fixed frame. A limiting plate is fixedly provided on one end of each guide rod to facilitate limiting and guiding the clamping plate.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] By clamping and fixing the multi-gas detector inside the fixed frame, and then connecting the air inlet and outlet pipes together, the extension pipe can be extended and retracted by rotating the rotating tube. This allows for adjustment of the extension length of the extension pipe, enabling direct detection of gases at different depths inside the well. This effectively avoids the situation where harmful gases inside the well harm the health of workers, and the usage effect is good. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a three-dimensional structural diagram of the multi-gas detector of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall three-dimensional sectional structure of this utility model;

[0021] Figure 5 This is a three-dimensional cross-sectional view of the rotating tube and rotating block of this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the fixing plate of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fixed frame; 2. Multi-gas detector; 3. Air inlet; 4. Intake pump; 5. Air outlet pipe; 6. Air inlet pipe; 7. Fixed plate; 8. Rotating tube; 9. Rotating rod; 10. Extension tube; 11. Counterweight; 12. Rotating block; 13. Square connecting rod; 14. Square connecting groove; 15. Spring; 16. Limiting rod; 17. Limiting groove; 18. Clamping plate; 19. Threaded rod; 20. Turning handle; 21. Guide rod; 22. Limiting plate. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1 to 6 The coalbed methane well testing and detection device shown includes:

[0027] A fixed frame 1 is provided, and a multi-gas detector 2 is provided inside the fixed frame 1. An air inlet 3 is provided on the multi-gas detector 2.

[0028] The suction pump 4 is embedded at the bottom of the fixed frame 1. The air outlet and air inlet of the suction pump 4 are respectively fixedly connected to the air outlet pipe 5 and the air inlet pipe 6. The bottom of the air inlet part 3 is inserted into the air outlet pipe 5.

[0029] A fixed plate 7 is fixedly installed on one side of the bottom end of the fixed frame 1. A rotating tube 8 is provided inside the fixed plate 7. One end of the air inlet pipe 6 passes through one end of the rotating tube 8 and is rotatably connected to the rotating tube 8 through a sealed bearing. A rotating rod 9 is fixedly connected to the other end of the rotating tube 8. One end of the rotating rod 9 passes through the fixed plate 7 and is rotatably connected to the fixed plate 7. An extension tube 10 is wound around the outer end of the rotating tube 8. One end of the extension tube 10 passes through the rotating tube 8 and is connected to the inside of the rotating tube 8. A counterweight 11 is fixedly provided at one end of the extension tube 10.

[0030] One end of the rotating rod 9 is provided with a rotating block 12, which is located on the outside of the fixed plate 7. One end of the rotating rod 9 is fixedly provided with a square connecting rod 13. One end of the rotating block 12 is provided with a square connecting groove 14. The square connecting rod 13 is located inside the square connecting groove 14. One end of the square connecting rod 13 is fixedly connected with a spring 15. One end of the spring 15 is fixedly connected to one end inside the square connecting groove 14. One end of the rotating block 12 is integrally connected with a limiting rod 16. Multiple limiting grooves 17 are provided on the outside of the fixed plate 7. One end of the limiting rod 16 is inserted into one of the limiting grooves 17.

[0031] The fixed frame 1 has two clamping plates 18 inside, which are clamped on both sides of the multi-gas detector 2. The clamping plates 18 are rotatably connected to threaded rods 19 on the outside. One end of each threaded rod 19 passes through both sides of the fixed frame 1 and is threadedly connected to both sides of the fixed frame 1. One end of each threaded rod 19 is fixedly equipped with a handle 20. The clamping plate 18 has a U-shaped cross-section. Two guide rods 21 are fixedly equipped on the outside of the clamping plate 18. The two guide rods 21 are respectively located at the top and bottom of the threaded rods 19. One end of each of the four guide rods 21 passes through both sides of the fixed frame 1 and extends to the outside of the fixed frame 1. One end of each guide rod 21 is fixedly equipped with a limiting plate 22.

[0032] Insert the air inlet 3 on the multi-gas detector 2 into the air outlet pipe 5, turn the handle 20, and the handle 20 drives the threaded rod 19 to rotate. Since the threaded rod 19 is connected to the fixed frame 1 by a thread, the threaded rod 19 moves inward as it rotates. The threaded rod 19 drives the clamping plate 18 to move inward, so that the two clamping plates 18 can clamp and fix the multi-gas detector 2.

[0033] At this point, the counterweight 11 at one end of the extension tube 10 is placed into the well, and the rotating block 12 is pulled outward. The rotating block 12 drives the limiting rod 16 to move outward and stretches the spring 15. When one end of the limiting rod 16 leaves the inside of a limiting groove 17, the rotating block 12 is rotated. The rotating block 12 drives the square connecting rod 13 and the rotating rod 9 to rotate. The rotating rod 9 drives the rotating tube 8 to rotate. The extension tube 10 wrapped around the outer end of the rotating tube 8 will be released. In this way, one end of the extension tube 10 and the counterweight 11 will gradually enter the well. The air pump 4 is started. The gas inside the well will enter the rotating tube 8 through one end of the extension tube 10, then enter the air outlet pipe 5 through the air inlet pipe 6, and finally enter the detection chamber of the multi-gas detector 2 through the air inlet 3. In this way, the multi-gas detector 2 will detect the gas composition inside the well. The multi-gas detector 2 is existing technology, and its working principle will not be described in detail here.

[0034] This invention clamps and fixes the multi-gas detector 2 inside the fixed frame 1, connects the air inlet 3 to the air outlet pipe 5, and extends and retracts the extension pipe 10 by rotating the rotating pipe 8. This allows for adjustment of the extension length of the extension pipe 10, enabling direct detection of gases at different depths inside the well. This effectively avoids the health risks of harmful gases inside the well harming workers, resulting in good performance. This embodiment specifically solves the problem that in the prior art, gas detection in coalbed methane well testing in coal mines is mostly done using multi-gas detectors, which are mostly handheld. This often requires workers to hold the detector by hand, which could lead to workers inhaling harmful gases and affecting their health.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A coal bed methane well testing device for coal mines, characterized in that, Include: Fixed frame (1), the fixed frame (1) is internally provided with multi-gas detector (2), the multi-gas detector (2) is provided with air inlet part (3); Suction pump (4), the suction pump (4) is embedded in the bottom end of fixed frame (1), the air outlet end and the air inlet end of the suction pump (4) are fixedly connected with air outlet pipe (5) and air inlet pipe (6) respectively, the bottom end of the air inlet part (3) is inserted into the inside of the air outlet pipe (5); Fixed plate (7), the fixed plate (7) is fixedly arranged on one side of the bottom end of the fixed frame (1), the inside of the fixed plate (7) is provided with rotating pipe (8), one end of the air inlet pipe (6) passes through one end of the rotating pipe (8) and is rotatably connected between the rotating pipe (8), the other end of the rotating pipe (8) is fixedly connected with rotating rod (9), one end of the rotating rod (9) passes through the fixed plate (7) and is rotatably connected between the fixed plate (7), the outer end of the rotating pipe (8) is wound with extension pipe (10), one end of the extension pipe (10) passes through the rotating pipe (8) and is connected with the inside of the rotating pipe (8), one end of the extension pipe (10) is fixedly provided with counterweight (11).

2. The coal-bed methane well testing device of claim 1, wherein: One end of the rotating rod (9) is provided with rotating block (12), the rotating block (12) is arranged on the outside of the fixed plate (7), one end of the rotating rod (9) is fixedly provided with square connecting rod (13), one end of the rotating block (12) is provided with square connecting groove (14), the square connecting rod (13) is arranged in the square connecting groove (14), one end of the square connecting rod (13) is fixedly connected with spring (15), one end of the spring (15) is fixedly connected with one end inside the square connecting groove (14).

3. The coal-bed methane well testing device of claim 2, wherein: One end of the rotating block (12) is integrally connected with limiting rod (16), a plurality of limiting grooves (17) are arranged on the outside of the fixed plate (7), one end of the limiting rod (16) is inserted into one of the limiting grooves (17).

4. The coal-bed methane well testing device of claim 1, wherein: The inside of the fixed frame (1) is provided with two clamping plates (18), the two clamping plates (18) are clamped on both sides of the multi-gas detector (2), respectively, the outside of the clamping plate (18) is rotatably connected with threaded rod (19), one end of the two threaded rods (19) passes through both sides of the fixed frame (1) and is threadedly connected between both sides of the fixed frame (1), respectively, one end of the threaded rod (19) is fixedly provided with rotating handle (20).

5. The coal-bed methane well testing device of claim 4, wherein: The cross section of the clamping plate (18) is U-shaped.

6. The coal-bed methane well testing device of claim 4, wherein: Two guide rods (21) are fixedly arranged on the outside of the clamping plate (18), the two guide rods (21) are arranged on the top and bottom of the threaded rod (19), respectively, one end of the four guide rods (21) passes through both sides of the fixed frame (1) and extends to the outside of the fixed frame (1), respectively, one end of the guide rod (21) is fixedly provided with limiting plate (22).

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