Coal bed gas dissipation speed measuring device
The coalbed methane escape velocity measuring device addresses measurement inaccuracies by using a telescopic design and stabilization mechanisms to ensure precise coal seam gas velocity readings, improving safety and accuracy in coal mining operations.
Patent Information
- Application Number
- CN202411243590.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2024-12-27
AI Technical Summary
Existing coal seam gas measurement devices fail to accurately measure escape velocity due to interference from outside air and cable deviation during the measurement process, compromising safety planning and accuracy.
A coalbed methane escape velocity measuring device with a telescopic design, rollers to flatten the cable, positioning plates to stabilize the cable, and a threaded rod system to ensure vertical insertion and accurate measurement within the coal seam borehole.
Ensures accurate measurement of coalbed methane escape velocity by preventing external air interference and cable deviation, enhancing safety and precision in coal seam mining operations.
Smart Images
Figure CN119195751A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of coal bed gas measurement, in particular to a coal bed gas escape velocity measurement device. Background Art
[0002] When mining a coal seam, if the coal body is damaged or affected by mining, some of the gas stored in the coal body will leave the coal body and flow into the mining space, affecting the safety of the workers working in the mining space. Before mining the coal seam, during the coal seam drilling exploration, it is necessary to measure the escape velocity of the coal seam gas after the coal seam drilling is completed. By measuring the escape velocity of the coal seam gas, it is easier to formulate mining plans and safety measures for subsequent coal seam mining, and to ensure that accidents are avoided during the coal seam mining process.
[0003] Therefore, we propose a device for measuring the coalbed methane escape velocity. Summary of the invention
[0004] The purpose of the present invention is to provide a coalbed methane escape velocity measuring device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coalbed methane escape velocity measuring device, comprising a workbench, telescopic legs, feet, cables and a measuring device, wherein the measuring device is connected to the bottom end of the cable (11), a first support rod is arranged on the top of the workbench, a wire wheel is arranged on the first support rod, a second support rod is arranged on the left side of the first support rod, a fixing block is arranged on the second support rod, a roller is arranged on the fixing block, a first through hole is arranged in the middle of the workbench, a first sleeve is arranged in the middle of the bottom of the workbench, a second sleeve is sleeved on the first sleeve, a positioning plate is arranged in the lower part of the second sleeve, a fixing rod is arranged on the top left side of the second sleeve, a threaded rod and a guide rod are arranged on the fixing rod, the threaded rod extends upward through the workbench, a mounting hole matching the threaded rod is arranged on the workbench, a limiting groove is arranged on the inner wall of the mounting hole, and a limiting block is arranged in the limiting groove.
[0006] Furthermore, two groups of positioning plates are provided, and a second through hole is provided in the middle of the two groups of positioning plates. A mounting groove is provided on the inner wall of the second through hole, and a ball is provided in the mounting groove.
[0007] Furthermore, the mounting grooves and balls are provided in three groups, and the three groups of mounting grooves and balls are evenly distributed on the inner wall of the second through hole.
[0008] Furthermore, an arc groove is provided in the middle of the roller side, a connecting shaft is provided in the middle of the roller, the connecting shaft extends upward through the fixed block, and a reduction motor is provided at the top of the connecting shaft.
[0009] Furthermore, a hole matching with the connecting shaft is arranged in the middle of the fixing block, and a bracket is arranged on the reduction motor, and the bracket is connected to the fixing block.
[0010] Furthermore, the cross-sections of the limiting groove and the limiting block are both circular, and the limiting block is fixedly connected to the threaded rod.
[0011] Furthermore, a portion of the surface of the threaded rod below the workbench is provided with threads, and a handle is provided at the top of the threaded rod.
[0012] Furthermore, the fixing rod is provided with a threaded hole matching with the threaded rod.
[0013] Furthermore, the top end of the guide rod is fixedly connected to the bottom of the workbench, and the guide rod passes through the fixed rod and is movably connected to the fixed rod.
[0014] Furthermore, the support foot is connected to the bottom of the telescopic support leg through a pin.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Rotate the threaded rod, the fixed rod drives the second casing to move downward, and the guide rod guides and stabilizes the movement of the second casing at the fixed rod level. After the second casing is extended into the coal seam rotary hole, the second casing goes deep into the coal seam borehole, so that the outside air cannot pass through the top of the coal seam borehole, and will not affect the measurement of the coal seam gas escape rate by the measuring device.
[0016] 2. Two groups of rollers exert pressure on the cable. The rollers for practicing Guzheng flatten the cable wound on the wheel, so that the measuring device set at the bottom of the cable can fall vertically without deviation and touching the inner wall of the coal seam borehole, ensuring that the measuring device can smoothly move down into the coal seam borehole and accurately measure the escape velocity of coalbed methane. The cable passes through the positioning plate, and three groups of mounting grooves and balls are evenly distributed on the inner wall of the second through hole. The cable passes through the second through hole set in the middle of the positioning plate. The three groups of balls set on the inner wall of the second through hole stabilize the cable, so that the cable will not shake during the process of moving down with the measuring device, thereby ensuring the accuracy of the measurement data of the measuring device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the threaded rod installation structure of the present invention; Figure 3 A top view of the positioning plate of the present invention; Figure 4 It is a cross-sectional view of the positioning plate of the present invention; Figure 5 This is a schematic diagram of the roller installation structure of the present invention; Figure 6It is a schematic diagram of the wire wheel structure of the present invention.
[0018] In the figure: 1, workbench; 2, telescopic legs; 201, supporting feet; 3, first support rod; 4, wire wheel; 5, second support rod; 6, fixing block; 7, roller; 8, first through hole; 9, first sleeve; 10, second sleeve; 11, cable; 12, positioning plate; 13, measuring device; 14, fixing rod; 15, threaded rod; 16, guide rod; 17, mounting hole; 18, limiting groove; 19, limiting block; 20, second through hole; 21, mounting groove; 22, ball; 23, arc groove; 24, connecting shaft; 25, reduction motor. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] See also Figure 1-6The present invention provides a technical solution: a coalbed methane escape velocity measuring device, comprising a workbench 1, a telescopic leg 2, a foot 201, a cable 11 and a measuring device 13, wherein the measuring device 13 is connected to the bottom end of the cable 11, a first support rod 3 is arranged on the top of the workbench 1, a wire wheel 4 is arranged on the first support rod 3, a second support rod 5 is arranged on the left side of the first support rod 3, a fixing block 6 is arranged on the second support rod 5, a roller 7 is arranged on the fixing block 6, a first through hole 8 is arranged in the middle of the workbench 1, a first sleeve 9 is arranged in the middle of the bottom of the workbench 1, and a roller 7 is arranged on the first sleeve 9. A second sleeve 10 is sleeved, a positioning plate 12 is arranged at the lower part of the second sleeve 10, a fixing rod 14 is arranged at the top of the left side of the second sleeve 10, a threaded rod 15 and a guide rod 16 are arranged on the fixing rod 14, the threaded rod 15 extends upward through the workbench 1, a mounting hole 17 matching with the threaded rod 15 is arranged on the workbench 1, a limiting groove 18 is arranged on the inner wall of the mounting hole 17, and a limiting block 19 is arranged in the limiting groove 18. To measure coalbed methane, the device is installed above the drilling position of the coal seam to align the drilling hole with the second sleeve 10, and the threaded rod 15 is rotated to fix The rod 14 is provided with a threaded hole matched with the threaded rod 15. During the rotation of the threaded rod 15, the fixed rod 14 drives the second sleeve 10 to move downward, and the guide rod 16 plays a guiding and stabilizing role in the movement of the fixed rod 14 and the second sleeve 10. After the second sleeve 10 is extended into the coal seam rotary hole, the second sleeve 9 goes deep into the coal seam borehole, so that the outside air cannot pass through the top of the coal seam borehole, and will not affect the measurement of the coal seam gas escape speed by the measuring device. The reduction motor 25 is started, and the reduction motor 25 drives the roller 7 to rotate through the connecting shaft 24. The roller 7 is provided with two groups, two The roller group 7 exerts pressure on the cable 11, and the roller group 7 flattens the cable 11 wound on the reel 4, so that the measuring device 13 arranged at the bottom end of the cable 11 can fall vertically without deviation and touching the inner wall of the coal seam borehole, thereby ensuring that the measuring device 13 can smoothly move downward into the coal seam borehole and accurately measure the escape velocity of coalbed methane. The cable 11 passes through the positioning plate 12, and the positioning plate 12 is provided with two groups. The two groups of positioning rods 12 stabilize the moving cable 11 and prevent the cable from shaking, thereby further improving the accuracy of the measurement data of the measuring device.
[0021] Reference embodiment: Two groups of positioning plates 12 are provided, and a second through hole 20 is provided in the middle of the two groups of positioning plates 12. A mounting groove 21 is provided on the inner wall of the second through hole 20, and a ball 22 is provided in the mounting groove 21. Three groups of mounting grooves 21 and balls 22 are provided, and the three groups of mounting grooves 21 and balls 22 are evenly distributed on the inner wall of the second through hole 20. The cable 11 passes through the second through hole 20 provided in the middle of the positioning plate 12, and the three groups of balls 22 provided on the inner wall of the second through hole 20 stabilize the cable 11, so that the cable 11 will not shake when the cable 11 moves downward with the measuring device 13, thereby ensuring the accuracy of the measurement data of the measuring device 13.
[0022] Reference embodiment: an arc groove 23 is provided in the middle of the side of the roller 7, a connecting shaft 24 is provided in the middle of the roller 7, the connecting shaft 24 extends upward through the fixed block 6, a reduction motor 25 is provided at the top of the connecting shaft 24, a hole matching the connecting shaft 24 is provided in the middle of the fixed block 6, a bracket is provided on the reduction motor 25, the bracket is connected to the fixed block 6, the transmission shaft of the reduction motor 25 is fixedly connected to the connecting shaft 24, the reduction motor 25 drives the roller 7 to rotate through the connecting shaft 24, the rotation of the two groups of rollers 7 not only drives the cable 11, but also flattens the bend caused by the cable 11 being wound around the wire wheel 4, thereby ensuring that the cable 11 drives the measuring device 13 to move vertically downward without deviation.
[0023] Reference embodiment: The cross-sections of the limit groove 18 and the limit block 19 are both circular, and the limit block 19 is fixedly connected to the threaded rod 15 to limit the threaded rod 15 so that the threaded rod 15 itself will not move when it rotates. The surface of the threaded rod 15 below the workbench 1 is provided with threads, and a handle is provided at the top of the threaded rod 15, which makes it easier to rotate the threaded rod 15. A threaded hole matching the threaded rod 15 is provided on the fixed rod 14. The threaded rod 15 drives the fixed rod 14 to move during rotation, and the fixed rod 14 drives the second sleeve 10 to move downward.
[0024] Reference embodiment: The top end of the guide rod 16 is fixedly connected to the bottom of the workbench 1, the guide rod 16 passes through the fixed rod 14, and is movably connected to the fixed rod 14, and the guide rod 16 guides the movement of the fixed rod 14 and stabilizes the movement of the fixed rod 14.
[0025] Reference embodiment: the support leg 201 is connected to the bottom of the telescopic support leg 2 through a pin shaft, and the support leg 201 rotates through the pin shaft, so that the device can adjust itself according to the slope of the ground, ensuring that the device can be placed stably.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A coalbed methane escape velocity measuring device, comprising a workbench (1), a telescopic support leg (2), a support foot (201), a cable (11) and a measuring device (13), characterized in that: The measuring device (13) is connected to the bottom end of the cable (11); a first support rod (3) is arranged on the top of the workbench (1); a wire wheel (4) is arranged on the first support rod (3); a second support rod (5) is arranged on the left side of the first support rod (3); a fixing block (6) is arranged on the second support rod (5); a roller (7) is arranged on the fixing block (6); a first through hole (8) is arranged in the middle of the workbench (1); a first sleeve (9) is arranged in the middle of the bottom of the workbench (1); a second sleeve (9) is sleeved on the first sleeve (9); A sleeve (10), a positioning plate (12) is arranged at the lower part of the second sleeve (10), a fixing rod (14) is arranged at the top of the left side of the second sleeve (10), a threaded rod (15) and a guide rod (16) are arranged on the fixing rod (14), the threaded rod (15) extends upward through the workbench (1), the workbench (1) is provided with a mounting hole (17) matching with the threaded rod (15), a limiting groove (18) is arranged on the inner wall of the mounting hole (17), and a limiting block (19) is arranged in the limiting groove (18).
2. A coalbed methane escape velocity measuring device according to claim 1, characterized in that: Two groups of positioning plates (12) are provided, and a second through hole (20) is provided in the middle of each of the two groups of positioning plates (12). An installation groove (21) is provided on the inner wall of the second through hole (20), and a ball (22) is provided in the installation groove (21).
3. A coalbed methane escape velocity measuring device according to claim 2, characterized in that: The mounting grooves (21) and the balls (22) are each provided in three groups, and the three groups of mounting grooves (21) and balls (22) are evenly distributed on the inner wall of the second through hole (20).
4. A coalbed methane escape velocity measuring device according to claim 1, characterized in that: An arc-shaped groove (23) is provided in the middle of the side surface of the roller (7), a connecting shaft (24) is provided in the middle of the roller (7), the connecting shaft (24) extends upward through the fixing block (6), and a reduction motor (25) is provided at the top end of the connecting shaft (24).
5. A coal bed gas escape velocity measuring device according to claim 4, characterized in that: A hole matching the connecting shaft (24) is provided in the middle of the fixing block (6), and a bracket is provided on the reduction motor (25), and the bracket is connected to the fixing block (6).
6. The coalbed methane escape velocity measuring device according to claim 1, characterized in that: The limiting groove (18) and the limiting block (19) are both circular in cross section, and the limiting block (19) is fixedly connected to the threaded rod (15).
7. The coalbed methane escape velocity measuring device according to claim 1, characterized in that: The surface of the threaded rod (15) below the workbench (1) is provided with threads, and a handle is provided at the top of the threaded rod (15).
8. The coalbed methane escape velocity measuring device according to claim 1, characterized in that: The fixing rod (14) is provided with a threaded hole which matches the threaded rod (15).
9. The coalbed methane escape velocity measuring device according to claim 1, characterized in that: The top end of the guide rod (16) is fixedly connected to the bottom of the workbench (1); the guide rod (16) passes through the fixed rod (14) and is movably connected to the fixed rod (14).
10. The coalbed methane escape velocity measuring device according to claim 1, characterized in that: The support foot (201) is connected to the bottom of the telescopic support leg (2) via a pin shaft.