Gas drilling extraction and gas leakage real-time detection device

Abstract

The utility model discloses a gas drilling extraction and gas leakage real-time detection device, and particularly relates to the technical field of gas extraction. The gas drilling extraction and gas leakage real-time detection device comprises an extraction pipe installed in an extraction drilling hole, the part, extending out of the extraction drilling hole, of the extraction pipe is provided with a connecting pipe connected with a gas extraction and drainage pipe, gas in a coal seam enters the connecting pipe through the extraction pipe and then enters the gas extraction and drainage pipe through the connecting pipe, and the gas extraction and drainage pipe is connected with the extraction drilling hole. Partition assemblies are arranged in the extraction pipe and divide the interior of the extraction pipe into a plurality of independent spaces. According to the gas drilling extraction and gas leakage real-time detection device, abnormal gas concentration can be found in time, the approximate position of a gas leakage point can be rapidly positioned according to data of the sensor, and workers can conveniently carry out accurate detection, grouting and leaking stoppage.

Description

Technical Field

[0001] This utility model relates to the field of gas extraction technology, and in particular to a gas drilling extraction and real-time leakage detection device. Background Technology

[0002] Methane gas poses a significant hazard in coal mining, often accumulating in the fissures of coal seams. Before mining, it needs to be extracted. This is typically done by drilling holes and then using a gas extraction pump station. However, as stress constantly changes during mining, the fissures around the extraction holes gradually enlarge. When these fissures reach a certain size, air can enter the extraction pipe through these larger fissures, reducing extraction efficiency. Therefore, regular inspections of the gas extraction holes are necessary to check for leaks.

[0003] Currently, detection is done manually. However, with the establishment of smart mines, manual detection methods, which are cumbersome, inefficient, and unable to reflect the real-time gas extraction situation in boreholes, are no longer sufficient to meet the requirements of smart mine management.

[0004] Therefore, it is necessary to provide a gas borehole extraction and real-time leakage detection device to solve the above-mentioned technical problems. Utility Model Content

[0005] In response to the above situation and to overcome the shortcomings of existing technology, this utility model provides a gas drilling extraction and real-time leak detection device that can promptly detect abnormal gas concentrations and quickly locate the approximate location of leaks based on sensor data, facilitating accurate detection and grouting for leak sealing by staff.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A gas borehole extraction and real-time leakage detection device includes: an extraction pipe installed in the extraction borehole; a connecting pipe connected to a gas drainage pipe is installed on the portion of the extraction pipe extending outside the extraction borehole; gas in the coal seam enters the connecting pipe through the extraction pipe, and then enters the gas drainage pipe through the connecting pipe; a partition component is provided in the extraction pipe, which divides the interior of the extraction pipe into multiple independent spaces, each of which is used to transport gas; multiple sensors are installed on the portion of the extraction pipe outside the extraction borehole, the sensors being gas concentration detection sensors; the number of the multiple sensors is consistent with the number of independent spaces divided by the extraction pipe, and each independent space is equipped with one sensor for real-time detection of its internal gas concentration.

[0008] Preferably, the separating component includes multiple partitions, which slide and seal in contact with the inner wall of the extraction pipe. Multiple vent holes are opened along the direction of the extraction pipe, and a certain distance is left between two adjacent vent holes. The position where the partition contacts the extraction pipe is located within this distance.

[0009] Preferably, the partition assembly has an end piece and multiple connector assemblies. The end piece can be spliced ​​with any connector or any two connectors. Both the end piece and the connectors include connecting posts, and multiple partitions are fixed to the connecting posts.

[0010] Preferably, one end of the end piece and one end of the connector are provided with a slot, and the other end of the connector is fixedly provided with a plug. The plug is adapted to the slot. The connecting post is provided with a fixing hole communicating with the slot. The plug is provided with a slot. When the plug is located inside the slot, the fixing hole and the slot are in the same direction, and the same fixing pin is inserted inside the fixing hole and the slot.

[0011] Preferably, a sealing ring is installed at one end of each of the plurality of connectors.

[0012] Preferably, each of the partitions is fixed with a sealing gasket.

[0013] Preferably, a filter screen is fixedly installed at one end of the end piece.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By dividing the extraction pipe into multiple independent spaces and setting multiple sensors, the gas concentration of each independent space can be monitored in real time, and abnormal gas concentration can be detected in time. Based on the sensor data, the approximate location of the leak point can be quickly located, which is convenient for staff to carry out accurate detection and grouting.

[0016] (2) By dividing the inside of the extraction pipe into multiple independent spaces through the partition component, the leakage point can be accurately located, avoiding large-area grouting and saving grouting materials and time.

[0017] (3) The separator consists of end pieces and multiple connectors, which can be flexibly spliced ​​according to the length of the extraction tube to meet the extraction needs of different lengths.

[0018] (4) The design of the slots and inserts between the connectors and end pieces, as well as the design of the fixing holes and fixing pins, makes the installation and disassembly of the connectors and end pieces easier, and facilitates the maintenance and replacement of the equipment. Attached Figure Description

[0019] Figure 1 A front view schematic diagram of the gas borehole extraction and real-time leakage detection device provided by this utility model;

[0020] Figure 2 A schematic diagram of the gas borehole extraction and real-time leakage detection device provided by this utility model.

[0021] Figure 3 A partial structural schematic diagram of the gas borehole extraction and real-time leakage detection device provided by this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the partition component in the gas borehole extraction and real-time leakage detection device provided by this utility model.

[0023] Figure 5 This is a schematic diagram of the connecting component in the gas borehole extraction and real-time leakage detection device provided by this utility model.

[0024] Figure 6 This is a partial structural diagram of the connecting component in the gas borehole extraction and real-time leakage detection device provided by this utility model.

[0025] The corresponding names of the reference numerals in the attached drawings are as follows: 1. Extraction pipe; 2. Connecting pipe; 3. Separating component; 4. End piece; 5. Connector; 6. Connecting post; 7. Partition; 8. Slot; 9. Fixing hole; 10. Insert block; 11. Slot; 12. Fixing pin; 13. Sealing ring; 14. Sealing gasket; 15. Sensor; 16. Filter screen. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0027] Example 1

[0028] like Figure 1-6As shown, the gas borehole extraction and real-time leakage detection device provided by this utility model includes: an extraction pipe 1 installed in the extraction borehole; a connecting pipe 2 connected to a gas drainage pipe (which extends to a gas extraction pump station) installed on the portion of the extraction pipe 1 extending outside the extraction borehole; gas in the coal seam enters the connecting pipe 2 through the extraction pipe 1, and then enters the gas drainage pipe through the connecting pipe 2; a partition component 3 is provided in the extraction pipe 1, which divides the interior of the extraction pipe 1 into multiple independent spaces, each of which is used to transport gas; multiple sensors 15 are installed on the portion of the extraction pipe 1 located outside the extraction borehole, and the sensors 15 are gas concentration detection sensors; the number of sensors 15 is consistent with the number of independent spaces divided in the extraction pipe 1, and each independent space is equipped with a sensor. Sensor 15 is used to detect the gas concentration inside the extraction pipe 1 in real time. During use, sensor 15 is connected to the ground control center, which can monitor the gas concentration in each independent space within the extraction pipe 1 in real time. When the gas concentration is abnormal, i.e., the gas concentration decreases too rapidly, a large crack may appear in the coal wall near that independent space, resulting in air leakage. In this case, personnel need to be dispatched to a designated location for on-site inspection to determine if the anomaly is caused by the expansion of coal wall cracks. If it is caused by the expansion of coal wall cracks, manual grouting is required to plug the cracks. Since the purpose of grouting is to plug the leak, large-area grouting is not necessary; precise grouting is required. This embodiment sets up multiple independent spaces, and the specific independent space can be determined according to the different numbers of sensor 15, thus facilitating the rapid and accurate location of the leak point for precise grouting. This embodiment can not only detect the gas concentration inside each independent space in real time but also accurately locate the approximate position of the leak point based on abnormal conditions, enabling personnel to quickly and accurately perform grouting to plug the enlarged cracks.

[0029] Example 2

[0030] The separation component 3 includes multiple partitions 7, which slide and seal against the inner wall of the extraction pipe 1. Multiple vent holes are opened along the direction of the extraction pipe 1, and a certain distance is left between two adjacent vent holes. The position where the partition 7 contacts the extraction pipe 1 is located at this distance. This can ensure the independence of each independent space, so as to accurately detect the approximate direction of the leakage later.

[0031] Example 3

[0032] like Figure 5As shown, the separating component 3 has an end piece 4 and multiple connectors 5. The end piece 4 can be spliced ​​with any connector 5, or two arbitrary connectors 5, to increase the length to accommodate the length of the extraction pipe 1. Since the roadway width is limited, while the length of the extraction pipe 1 can reach several meters or even tens of meters, it is difficult to meet the length requirement if a single component is used. Therefore, an end piece 4 and multiple connectors 5 are required to work together. Both the end piece 4 and the connectors 5 include connecting posts 6, and multiple partitions 7 are fixed to the connecting posts 6. During installation, the end piece 4 is first inserted into the extraction pipe 1, and then a connector 5 is spliced. Both are pushed into the extraction pipe 1. Then, the next connector 5 is installed. After installation, the connector 5 is installed again. This cycle continues until a suitable length is reached. This embodiment allows the separating component to be spliced ​​to extend its length and meet the length requirements of the extraction pipe 1.

[0033] Furthermore, both the end piece 4 and the connector 5 have a slot 8 at one end, and a plug 10 is fixedly provided at the other end of the connector 5. The plug 10 is adapted to the slot 8, and the two cooperate to limit the connector 5, so that the connector 5 is connected to the end piece 4 in a predetermined direction. The connecting post 6 has a fixing hole 9 communicating with the slot 8, and the plug 10 has a slot 11. When the plug 10 is located inside the slot 8, the fixing hole 9 and the slot 11 are aligned. In the same direction, and with the same fixing pin 12 inserted into the fixing hole 9 and the slot 11, the insert block 10 is firmly fixed in the slot 8 under the action of the fixing pin. The fixing pin 12 plays a role in fixing the end piece 4, the connector 5, and the two connectors 5. The fixing hole 9 also facilitates the removal of the end piece 4 and the connector 5. When it is necessary to remove the end piece 4 and the connector 5, insert the hook into the slot 8 and hook the fixing hole 9, and pull it outward with force to pull out the connector 5 and the end piece 4.

[0034] Example 4

[0035] like Figure 5 As shown, a sealing ring 13 is installed at one end of each of the multiple connectors 5. When the end piece 4 is connected to the connector 5 or two connectors 5 are connected, the sealing ring 13 plays a sealing role to ensure the independence of each independent space.

[0036] Furthermore, each of the partitions 7 is fixed with a sealing gasket 14, which serves to seal and ensure the independence of each independent space.

[0037] Example 5

[0038] like Figure 2As shown, a filter screen 16 is fixedly installed at one end of the end piece 4. The function of the filter screen 16 is to block larger coal blocks or gangue from entering the independent space and to block the flow of gas.

Claims

1. A gas borehole extraction and real-time leakage detection device, characterized in that, include: An extraction pipe (1) is installed in the extraction borehole. The part of the extraction pipe (1) extending outside the extraction borehole is equipped with a connecting pipe (2) connected to the gas extraction pipe. A partition component (3) is provided in the extraction pipe (1). The partition component (3) divides the interior of the extraction pipe (1) into multiple independent spaces. Each independent space is used to transport gas. Multiple sensors (15) are installed on the part of the extraction pipe (1) located outside the extraction borehole. The sensors (15) are gas concentration detection sensors (15). The number of multiple sensors (15) is consistent with the number of independent spaces divided by the extraction pipe (1). Each independent space is equipped with a sensor (15) for real-time detection of the gas concentration inside it.

2. The gas drilling extraction and leakage real-time detection device according to claim 1, characterized in that, The separation component (3) includes multiple partitions (7), which slide and seal in contact with the inner wall of the extraction pipe (1). Multiple exhaust holes are opened along the direction of the extraction pipe (1), and a certain distance is left between two adjacent exhaust holes. The position where the partition (7) contacts the extraction pipe (1) is located on this distance.

3. The gas drilling extraction and leakage real-time detection device according to claim 2, characterized in that, The partition component (3) has an end piece (4) and multiple connectors (5) components. The end piece (4) can be spliced ​​with any connector (5) and any two connectors (5). The end piece (4) and the connectors (5) both include connecting posts (6), and multiple partitions (7) are fixed to the connecting posts (6).

4. The gas drilling extraction and leakage real-time detection device according to claim 3, characterized in that, Both the end piece (4) and the connector (5) have a slot (8) at one end. The other end of the connector (5) is fixedly provided with a plug (10). The plug (10) is adapted to the slot (8). The connecting post (6) has a fixing hole (9) communicating with the slot (8). The plug (10) has a slot (11). When the plug (10) is inside the slot (8), the fixing hole (9) and the slot (11) are in the same direction, and the same fixing pin (12) is inserted inside the fixing hole (9) and the slot (11).

5. The device according to claim 3, characterized in that, A sealing ring (13) is installed at one end of each of the connectors (5).

6. The gas drilling extraction and leakage real-time detection device according to claim 2, characterized in that, Each of the partitions (7) is fixed with a sealing gasket (14).

7. The device according to claim 3, characterized in that, A filter screen (16) is fixedly installed at one end of the end piece (4).

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