A kind of gas emission detection equipment of extraction borehole

Abstract

The utility model provides a kind of extraction drilling gushing gas detection equipment, it is related to mine gas detection technical field, including equipment shell, air inlet subassembly and gas detector body, gas detector body and air inlet subassembly are installed in equipment shell interior, air inlet subassembly includes peristaltic pump, winding wheel and connecting pipe, motor output end is equipped with round bar, winding wheel is connected with round bar, end cap is rotatably equipped with ring plate, ring plate is fixedly connected with winding wheel one end, the air extraction end of peristaltic pump is equipped with air extraction pipe, connecting pipe is equipped on winding wheel, fixed pipe one end is connected with connecting pipe, and fixed pipe other end extends to air inlet cavity interior, the free end of connecting pipe is equipped with air inlet head;The utility model can be by controlling winding wheel action to drive connecting pipe winding or release, and the air inlet head of one end of connecting pipe is used to send air of different position height to equipment shell interior to be detected by gas detector body, so as to detect the content of gas in different height air.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology in mining, and in particular to a gas detection device for gas emerging from extraction boreholes. Background Technology

[0002] During borehole mining, the free space created in the borehole allows for the rapid release of gas from the coal seam. Adsorbed gas can also quickly transform into free gas, causing a sudden influx of large amounts of gas into the borehole, which may then enter the mining roadways. This could seriously affect the safety of miners and mining efficiency.

[0003] Gas detection equipment is commonly used in borehole mining to monitor the gas concentration inside the mining tunnels. However, existing gas detection equipment is generally installed on the wall surface inside the shaft, with a fixed installation location, resulting in a fixed detection range and poor practicality. Therefore, this utility model proposes a gas detection device for extraction boreholes to overcome the shortcomings of the existing technology. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a gas detection device for extraction boreholes. This device can control the operation of the winding wheel to drive the connecting pipe to wind up or unwind, thereby using the air inlet at one end of the connecting pipe to deliver air at different heights into the device housing for detection by the gas detector body. This allows for the detection of the gas content in the air at different heights, facilitating the determination of the gas outburst location.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas detection device for extraction boreholes includes a housing, an air intake assembly, and a gas detector body. The gas detector body and air intake assembly are installed inside the housing. Exhaust holes are provided on both side walls of the housing, each with a first filter screen and a sealing assembly. The air intake assembly includes a peristaltic pump, a winding reel, and a connecting pipe. The winding reel has a cavity structure, and a motor is installed inside the cavity. The motor is mounted to the inner wall of the housing, and a circular... The device housing has an end cover inside, and a ring plate is rotatably mounted inside the end cover. The ring plate is fixedly connected to one end of the winding wheel, and an air inlet chamber is formed between the ring plate and the end cover. The peristaltic pump has an air extraction pipe at its suction end, and one end of the air extraction pipe is connected to the inside of the air inlet chamber. The winding wheel has a connecting pipe, and a fixed pipe is located inside the winding wheel. One end of the fixed pipe is connected to the connecting pipe, and the other end of the fixed pipe extends into the air inlet chamber. An air inlet head is located on the free end of the connecting pipe.

[0007] A further improvement is that a mounting plate is provided on the rear side wall of the equipment housing, and bolt holes are provided at the four corners of the mounting plate.

[0008] A further improvement is that the sealing assembly includes a fixed shell, a sealing plate, and a spring. The fixed shell is provided on the equipment housing at the vent hole. The sealing plate is hinged inside the fixed shell. The fixed shell is provided with a spring. Multiple sets of springs are provided. One end of each set of springs is connected to the upper sidewall of the sealing plate.

[0009] A further improvement is that the device housing has an opening, the position of which is adapted to the installation position of the gas detector body, a baffle is provided at the opening, and a transparent window is provided on the baffle.

[0010] A further improvement is that the baffle is provided with a threaded hole, a positioning bolt is provided in the threaded hole, and a rubber sleeve is provided at one end of the positioning bolt.

[0011] A further improvement is that the air intake head includes an air intake shroud, a second filter screen, and a counterweight ring. The free end of the connecting pipe is connected to the air intake shroud. The second filter screen is located in the middle of the air intake shroud, and the counterweight ring is located at the bottom of the air intake shroud.

[0012] The beneficial effects of this utility model are as follows: By setting an air intake component and a gas detector body inside the equipment housing, the air intake component consists of a peristaltic pump, a winding wheel, and a connecting pipe. By controlling the movement of the winding wheel to drive the connecting pipe to wind or unwind, air at different heights can be transported to the inside of the equipment housing through the air intake head at one end of the connecting pipe and detected by the gas detector body. This allows for the detection of the gas content in the air at different heights, facilitating the determination of the gas emission location. Furthermore, the air extraction position can be adjusted according to changes in the borehole position, ensuring that the air intake component can always extract air around the borehole to determine whether gas is emanating. This improves the detection range of the gas emission detection equipment for extraction boreholes and makes the equipment more convenient to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the sealing component structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the baffle structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the air intake assembly structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the air intake head structure of this utility model.

[0019] The components include: 1. Equipment housing; 2. Gas detector body; 3. Exhaust port; 4. First filter screen; 5. ; 6. Rewinding reel; 7. Connecting pipe; 8. Motor; 9. End cap; 10. Ring plate; 11. Suction pipe; 12. Round rod; 13. Fixing pipe; 14. Air inlet head; 1401. Air inlet hood; 1402. Second filter screen; 1403. Counterweight ring; 15. Mounting plate; 16. Bolt hole; 17. Fixing shell; 18. Sealing plate; 19. Spring; 20. Baffle; 21. Transparent window; 22. Threaded hole; 23. Positioning bolt; 24. Rubber sleeve. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] according to Figure 1-6As shown, this embodiment proposes a gas detection device for extraction boreholes, including a housing 1, an air intake assembly, and a gas detector body 2. The gas detector body 2 and the air intake assembly are installed inside the housing 1. In this invention, the gas detector 1 is a CJT4 type gas detector. The gas detector 1 utilizes the catalytic combustion principle. Its internal detection element is coated with a catalyst. When gas containing methane comes into contact with the detection element, the methane undergoes flameless combustion under the action of the catalyst, releasing heat and raising the temperature of the detection element, thus increasing its resistance. The corresponding compensation element does not react with the methane and is used to offset the influence of environmental factors on the detection results. The detection element and the compensation element form a Wheatstone bridge. Changes in resistance cause the bridge to become unbalanced, generating an electrical signal proportional to the methane concentration. By processing and converting the electrical signal, the methane concentration value is obtained. (CJT4) This type of gas detector has high detection accuracy, capable of detecting gas in the 0-4% CH4 concentration range. The basic error can be controlled within a certain range; for example, in the 0-1% CH4 range, the error is less than ±0.1%. It also has the advantage of fast response speed, detecting changes in gas concentration and responding quickly, typically within 20 seconds. It has explosion-proof functionality and is suitable for flammable and explosive hazardous environments such as underground coal mines. The equipment housing 1 has exhaust holes 3 on both side walls, with a first filter 4 installed inside each exhaust hole 3. The first filter 4 isolates external impurities when the exhaust hole 3 is open. A sealing assembly is also provided at the exhaust hole 3. The air intake assembly includes a peristaltic pump 5, a winding wheel 6, and a connecting pipe 7. The winding wheel 6 has an internal cavity structure. A motor 8 is installed inside the cavity and mounted on the inner wall of the equipment housing 1. A round rod 12 is provided at the output end of the motor 8, and a take-up reel 6 is connected to the round rod 12. An end cover 9 is provided inside the equipment housing 1, and a ring plate 10 is rotatably mounted inside the end cover 9. The ring plate 10 is fixedly connected to one end of the take-up reel 6, forming an air intake chamber between the ring plate 10 and the end cover 9. An air extraction pipe 11 is provided at the suction end of the peristaltic pump 5, and one end of the air extraction pipe 11 is connected to the inside of the air intake chamber. A connecting pipe 7 is provided on the take-up reel 6, and a fixed pipe 13 is provided inside the take-up reel 6. One end of the fixed pipe 13 is connected to the connecting pipe 7, and the other end of the fixed pipe 13 extends into the air intake chamber. An air inlet head 14 is provided on the free end of the connecting pipe 7. In this utility model… The peristaltic pump model 5 is BT100S-1. This model of peristaltic pump can achieve precise flow control (flow range 0.0001-350ml / min) by adjusting the speed, which can meet the equipment's stable air extraction requirements at different heights, ensuring that the gas enters the detection area at a uniform speed and avoiding the impact of airflow fluctuations on detection accuracy. The pump head adopts a modular design, which can be adapted to the pipe diameter requirements of connecting pipe 7 (flexible hose) in the document. It has good anti-interference ability, and the shell material is wear-resistant and corrosion-resistant, which can adapt to the dusty and humid environment of underground coal mines. At the same time, the operating noise is low (≤50dB), which will not cause additional interference to underground operations.

[0022] When using the gas detection device for extraction boreholes of this utility model, the entire device is first fixedly installed at a high position. During detection, the motor 8 is started to drive the winding wheel 6 to rotate, thereby unwinding the connecting pipe 7 wound on the winding wheel 6. Then, the air is drawn into the device housing 1 from different heights through the air inlet head 14 at the free end of the connecting pipe 7. Specifically, the peristaltic pump 5 is started and the air extraction pipe 11 draws air into the air inlet chamber. The air inside the air inlet chamber is drawn in from the outside through the passage formed by the air inlet head 14, the connecting pipe 7, and the fixed pipe 13. The drawn-in air is detected in real time by the gas detector body.

[0023] The equipment housing 1 is provided with a mounting plate 15 on its rear side wall, and bolt holes 16 are provided at the four corners of the mounting plate 15. When the equipment housing 1 of this utility model is fixedly installed, the mounting plate 15 can be fixed to the installation foundation by arranging bolts in the bolt holes 16 on the mounting plate 15.

[0024] The sealing assembly includes a fixed shell 17, a sealing plate 18, and a spring 19. The fixed shell 17 is located on the equipment housing 1 at the exhaust port 3. The sealing plate 18 is hinged inside the fixed shell 17. Multiple sets of springs 19 are located inside the fixed shell 17, with one end connected to the upper sidewall of the sealing plate 18. In this invention, when the peristaltic pump 5 starts, external air is drawn into the equipment housing 1, expelling the existing air and causing the sealing plate 18 to rotate and open. If the peristaltic pump 5 is turned off and no more air enters the equipment housing 1, the spring 19 allows the sealing plate 18 to return to its original position, thus sealing the exhaust port 3 and preventing other air from entering the equipment housing 1 and affecting the detection results of the gas detector body 2.

[0025] The device housing 1 has an opening, the position of which is adapted to the installation position of the gas detector body 2. A baffle 20 is provided at the opening, and a transparent window 21 is provided on the baffle 20. This utility model allows for easy removal of the gas detector body 2 by providing the baffle 20, while the transparent window 21 facilitates observation of the detection results of the gas detector body 2 inside the device housing 1.

[0026] The baffle 20 is provided with a threaded hole 22, and a positioning bolt 23 is provided in the threaded hole 22. A rubber sleeve 24 is rotatably provided at one end of the positioning bolt 23. By setting the positioning bolt 23 and the rubber sleeve 24, the gas detector body 2 can be pressed and fixed by rotating the positioning bolt 23, thereby improving the installation stability of the gas detector body 2.

[0027] The air intake head 14 includes an air intake shroud 1401, a second filter 1402, and a counterweight ring 1403. The free end of the connecting pipe 7 is connected to the air intake shroud 1401. The second filter 1402 is located in the middle of the interior of the air intake shroud 1401, and the counterweight ring 1403 is located at the lower part of the interior of the air intake shroud 1401. When the air intake head 14 of this invention draws in external air, the counterweight ring 1403 keeps the air intake head 14 in a vertically downward position, while the second filter 1402 filters solid impurities from the drawn-in air, preventing impurities from entering the pipeline and ensuring its normal operation.

[0028] This invention features an air intake assembly and a gas detector body 2 installed inside the equipment housing 1. The air intake assembly consists of a peristaltic pump 5, a winding wheel 6, and a connecting pipe 7. By controlling the movement of the winding wheel 6, the connecting pipe 7 can be wound or unwound, allowing air at different heights to be transported into the equipment housing 1 via an air intake head at one end of the connecting pipe 7. This air is then detected by the gas detector body 2, thus detecting the gas content in the air at different heights. This facilitates the determination of the gas emission location and allows the air extraction position to be adjusted according to changes in the borehole location. This ensures that the air intake assembly can always extract air around the borehole to determine whether gas is emanating, thereby increasing the detection range of the gas emission detection equipment and making the equipment more convenient to use.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas detection device for extraction boreholes, characterized in that: The device includes a housing (1), an air intake assembly, and a gas detector body (2). The gas detector body (2) and the air intake assembly are installed inside the housing (1). Exhaust holes (3) are provided on both sides of the housing (1). A first filter screen (4) is provided inside the exhaust hole (3), and a sealing assembly is provided at the exhaust hole (3). The air intake assembly includes a peristaltic pump (5), a winding wheel (6), and a connecting pipe (7). The winding wheel (6) has a cavity structure inside. A motor (8) is provided inside the cavity. The motor (8) is installed on the inner wall of the housing (1). A round rod (12) is provided at the output end of the motor (8). The winding wheel (6) is connected to the round rod (12). Next, the equipment housing (1) is provided with an end cover (9) inside, and an annular plate (10) is rotatably provided inside the end cover (9). The annular plate (10) is fixedly connected to one end of the winding wheel (6). An air inlet chamber is formed between the annular plate (10) and the end cover (9). The peristaltic pump (5) is provided with an air extraction pipe (11) at the air extraction end. One end of the air extraction pipe (11) is connected to the inside of the air inlet chamber. A connecting pipe (7) is provided on the winding wheel (6). A fixed pipe (13) is provided inside the winding wheel (6). One end of the fixed pipe (13) is connected to the connecting pipe (7), and the other end of the fixed pipe (13) extends into the inside of the air inlet chamber. An air inlet head (14) is provided on the free end of the connecting pipe (7).

2. The gas detection device for extraction boreholes according to claim 1, characterized in that: The device housing (1) has a mounting plate (15) on its rear side wall, and bolt holes (16) are provided at the four corners of the mounting plate (15).

3. The gas detection device for extraction boreholes according to claim 1, characterized in that: The sealing assembly includes a fixed shell (17), a sealing plate (18), and a spring (19). The fixed shell (17) is provided on the equipment housing (1) at the exhaust hole (3). The sealing plate (18) is hinged inside the fixed shell (17). The fixed shell (17) is provided with a spring (19). There are multiple sets of springs (19), and one end of each set of springs (19) is connected to the upper side wall of the sealing plate (18).

4. The gas detection device for extraction boreholes according to claim 1, characterized in that: The device housing (1) has an opening, the position of which is adapted to the installation position of the gas detector body (2), and a baffle (20) is provided at the opening, and a transparent window (21) is provided on the baffle (20).

5. The gas detection device for extraction boreholes according to claim 4, characterized in that: The baffle (20) is provided with a threaded hole (22), and a positioning bolt (23) is provided in the threaded hole (22). One end of the positioning bolt (23) is provided with a rubber sleeve (24).

6. The gas detection device for extraction boreholes according to claim 1, characterized in that: The air intake head (14) includes an air intake shroud (1401), a second filter (1402) and a counterweight ring (1403). The free end of the connecting pipe (7) is connected to the air intake shroud (1401). The second filter (1402) is provided in the middle of the air intake shroud (1401), and the counterweight ring (1403) is provided at the bottom of the air intake shroud (1401).

Images