Gas extraction parameter inspection regulation and control device

Abstract

The utility model discloses a gas extraction parameter routing inspection regulation and control device which comprises receiving and extracting pipes, a confluence sampler, a gas guide pipe rotating shaft group, a rotating gas guide pipe and a rotating arm, and the side face of the confluence sampler is connected with the corresponding receiving and extracting pipes. One end of the gas-guide tube rotating shaft group is connected with a driving device, and the other end of the gas-guide tube rotating shaft group is communicated with a measuring device. One end of the rotary gas-guide tube is fixed and communicated with the gas-guide tube rotating shaft group, and the other end of the rotary gas-guide tube is communicated with any receiving and pumping tube along with the rotation of the gas-guide tube rotating shaft group. And when the rotary air guide pipe in the same direction as the rotary arm is communicated with the receiving and pumping pipe, the valve regulation and control device of the rotary arm acts on the mechanical valve of the receiving and pumping pipe. According to the utility model, the circulating conduction of each drilling hole and the confluence cavity with the measuring device and the synchronous regulation and control of the valves are realized, and the device has the advantages of high automation degree, simple structure, convenience in installation and the like.

Description

Technical Field

[0001] This utility model relates to the field of gas extraction borehole measurement, and in particular to a device for inspecting and controlling extracted gas parameters. Background Technology

[0002] Coal, as my country's main fossil energy source, is prone to accidents such as mine gas explosions and outbursts during mining due to the desorption and release of harmful gases such as methane. To ensure safe coal mine production, it is necessary to construct gas drainage boreholes to effectively extract methane from coal seams. The extracted methane can be utilized as a clean energy source, improving the comprehensive utilization rate of coal resources and reducing environmental pollution. Article 47 of the "Detailed Rules for the Prevention and Control of Coal and Gas Outbursts" (2019) stipulates that the concentration, negative pressure, flow rate, temperature, and carbon monoxide levels in gas drainage boreholes must be measured regularly. Currently, drainage boreholes are measured and recorded by workers carrying measuring devices, with the testing cycle generally not exceeding 7 days, allowing for manual inspection and adjustment of the drainage status of each borehole.

[0003] Because the gas parameters extracted from boreholes can change over time, manual monitoring can only be performed once a week, and this is prone to false alarms, missed alarms, or misreporting. Therefore, it can only provide a vague reference for judging the effectiveness of borehole extraction and cannot achieve precise monitoring, measurement, and control of the extraction area at the borehole level. Installing multi-parameter sensors and electrically controlled valves in each extraction borehole presents problems such as a huge number of sensors and valves, difficulties in installation, debugging, and maintenance, complex power supply and communication systems, high costs, and limitations on large-scale deployment.

[0004] To solve the above problems, there is an urgent need for a gas extraction parameter inspection and control device to realize the automatic cyclic collection, measurement and control of gas extraction parameters in each borehole, and to have a simple structure, be easy to install, have low cost and be suitable for widespread use. Utility Model Content

[0005] This invention solves the problems of existing technologies by installing a patrol and control device in the extraction area to achieve cyclical communication between each borehole, the manifold, and the measuring device, and by using a valve-controlled rotating arm to achieve synchronous control of the mechanical valves in the borehole extraction pipeline. This device is highly automated, simple in structure, low in cost, small in size, easy to install, and suitable for widespread application.

[0006] This utility model discloses a gas extraction parameter inspection and control device, including: a connecting pipe for connecting to the borehole sealing pipeline, a manifold sampler with a hollow manifold cavity inside, a gas guide pipe rotating shaft assembly, a rotating gas guide pipe, and a rotating arm.

[0007] Several air inlets connected to the manifold cavity are arranged sequentially along the side of the manifold sampler. Each air inlet is connected to a corresponding suction pipe, and each suction pipe is equipped with a mechanical valve. The air guide tube rotating shaft assembly passes through the top and bottom surfaces of the manifold sampler and can rotate relative to each other. One end of the air guide tube rotating shaft assembly is connected to a drive device, and the other end is connected to the measuring device.

[0008] One end of the rotating air guide tube in the manifold is fixed and connected to the rotating shaft assembly of the air guide tube, and the other end is used to connect to any suction tube as the rotating shaft assembly of the air guide tube rotates.

[0009] One end of the rotating arm is fixedly connected to the rotating shaft assembly of the air guide tube outside the manifold sampler, and the other end is equipped with a valve control device. The rotating arm and the rotating air guide tube point in the same direction, so that the rotating air guide tube can be connected to any connecting pipe. At the same time, the valve control device of the rotating arm acts on the mechanical valve of the connecting pipe.

[0010] Furthermore, the side of the manifold sampler is also provided with a manifold measuring gas outlet chamber that communicates with the manifold cavity; the other end of the rotating air guide tube is also used to rotate with the rotating shaft assembly of the air guide tube, pointing towards the manifold measuring gas outlet chamber to connect with the manifold cavity.

[0011] The bottom surface of the manifold sampler is provided with a manifold outlet, and a lower sealing scraper is provided below the rotating air guide tube. When the rotating air guide tube is pointed towards the manifold measurement outlet chamber, the lower sealing scraper will block the manifold outlet.

[0012] Furthermore, one end of the rotating air guide tube is provided with an air guide tube outlet, and the rotating air guide tube is connected to the air guide tube rotating shaft assembly through the air guide tube outlet;

[0013] The other end of the rotating air guide tube is provided with an air guide tube inlet; the rotating air guide tube is provided with an air guide tube inlet seal on the outside of the air guide tube inlet, so that the air guide tube inlet is connected to the inner wall of the manifold through the air guide tube inlet seal.

[0014] Furthermore, the lower sealing scraper is equipped with a lower sealing scraper seal, which is used to block the gas outlet of the confluence through the lower sealing scraper.

[0015] Furthermore, the upper end of the air tube rotating shaft assembly is provided with a drive connection end, and the drive device is connected to the air tube rotating shaft assembly through the drive connection end;

[0016] The lower end of the rotating shaft assembly of the air guide tube is provided with an air guide outlet end, and the rotating shaft assembly of the air guide tube is connected to the measuring device through the air guide outlet end.

[0017] Furthermore, the manifold sampler is provided with a drive connection end bearing located above the manifold cavity. The drive connection end passes through the drive connection end bearing and is sealed to the top surface of the manifold cavity. The manifold sampler is also provided with an outlet end bearing located below the manifold cavity. The air outlet end of the rotating shaft assembly passes through the outlet end bearing and is sealed to the bottom surface of the manifold cavity.

[0018] Furthermore, the driving device is a pneumatic motor.

[0019] Furthermore, the valve control device on the rotating arm includes a control wrench and a motor, wherein the motor is connected to the control wrench and is used to drive the control wrench.

[0020] Furthermore, a limit switch is provided on the bottom surface of the rotating arm, and a positioning block is provided on the upper part of the junction cavity of the junction sampler, which is uniquely associated with each sampling pipe. This allows the control wrench to act on the mechanical valve on the sampling pipe corresponding to the positioning block when the limit switch contacts and positions any positioning switch.

[0021] This utility model has at least the following beneficial effects:

[0022] By installing the inspection and control device of this invention in the extraction area, the circulation between each borehole and the manifold cavity and the measuring device is realized. Furthermore, the mechanical valves of the borehole extraction pipeline are synchronously controlled via the valve-controlled rotating arm, effectively solving the problems existing in the prior art. This invention features a high degree of automation, simple structure, low cost, small size, convenient installation, and is suitable for widespread application.

[0023] Other beneficial effects of this invention will be described in detail in the specific embodiments section. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a top view of the extracted gas parameter inspection and control device disclosed in a preferred embodiment of this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the gas extraction parameter inspection and control device disclosed in a preferred embodiment of this utility model.

[0027] Figure 3 This is a schematic diagram of the borehole gas extraction parameter inspection and control status of the gas extraction parameter inspection and control device disclosed in a preferred embodiment of this utility model.

[0028] Figure 4 This is a schematic diagram of the borehole confluence extraction gas parameter measurement status of the gas parameter inspection and control device disclosed in the preferred embodiment of this utility model.

[0029] Figure 5 This is a bottom view of the borehole confluence gas extraction parameter measurement status of the gas extraction parameter inspection and control device disclosed in the preferred embodiment of this utility model.

[0030] In the diagram, 1-drawing tube assembly, 2-manifold sampler, 3-valve control rotating arm, 4-drive device, 5-measuring device, 101-drawing tube assembly, 102-mechanical valve, 201-manifold cavity, 202-air inlet, 203-manifold measuring outlet chamber, 204-rotating air guide tube, 205-air guide tube rotating shaft assembly, 206-manifold outlet, 2041-air guide tube inlet, 2042-air guide tube inlet seal. 2043-Air outlet of the air duct, 2044-Lower sealing scraper, 2045-Lower sealing scraper seal, 2051-Drive connection end, 2052-Drive connection end bearing, 2053-Air outlet end of the rotating shaft assembly, 2054-Outlet end bearing, 301-Rotating arm, 302-Valve control device, 303-Limit switch, 3021-Motor, 3022-Control wrench, 3031-Positioning stop. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] like Figures 1 to 5 As shown, this utility model discloses a gas extraction parameter inspection and control device, which mainly includes: a gas extraction pipe assembly 1, a manifold sampler 2, a valve control rotating arm 3, a drive device 4, and a measuring device 5. The above components are described in detail below.

[0033] The sampling pipe assembly 1 mainly includes a sampling pipe 101 and a mechanical valve 102. The mechanical valve 102 is installed on the sampling pipe 101 to control its opening and closing. One end of the sampling pipe 101 is connected to the manifold sampler 2, and the other end is connected to the borehole sealing pipeline. In this embodiment, the sampling pipe 101 is an L-shaped pipe, with one end horizontally positioned and connected to the manifold sampler 2, and the other end vertically positioned and connected to the borehole sealing pipeline. The mechanical valve 102 is installed on the vertically positioned pipe section.

[0034] The manifold sampler 2 includes a manifold cavity 201, an air inlet 202, a manifold measuring outlet cavity 203, a rotating air guide tube 204, an air guide tube rotating shaft assembly 205, and a manifold outlet 206. The manifold sampler 2 is approximately cylindrical in structure, with the hollow interior portion being the manifold cavity 201. Multiple air inlets 202 are located on the sidewall of the manifold sampler 2, one end of which connects to the suction pipe 101, and the other end connects to the manifold cavity 201. The inner sidewall of the manifold sampler 2 also has a manifold measuring outlet cavity 203 communicating with the manifold cavity 201. The rotating air guide tube 204 and the air guide tube rotating shaft assembly 205 are located in the middle of the manifold cavity 201.

[0035] The rotating air guide tube 204 is provided with an air guide tube inlet 2041, an air guide tube inlet seal 2042, an air guide tube outlet 2043, a lower sealing scraper 2044, and a lower sealing scraper seal 2045. The air guide tube inlet 2041 is connected to the inner wall of the manifold 201 via the air guide tube inlet seal 2042. The air guide tube outlet 2043 is fixed to and communicates with the rotating shaft assembly 205. A lower sealing scraper 2044 is fixed to the lower part of the rotating air guide tube 204, and the lower sealing scraper 2044 is connected to the inner wall of the bottom surface of the manifold 201 via the lower sealing scraper seal 2045.

[0036] The air guide tube rotating shaft assembly 205 is provided with a drive connection end 2051 and a rotating shaft assembly air outlet end 2053. The drive connection end 2051 is connected to the drive device 4, which is preferably a pneumatic motor. The manifold sampler 2 is provided with a drive connection end bearing 2052 located above the manifold cavity 201. The drive connection end 2051 is sealed to the top surface of the manifold cavity 201 through the drive connection end bearing 2052 and can rotate relative to it. The rotating shaft assembly air outlet end 2053 is connected to the measuring device 5. The manifold sampler 2 is also provided with an outlet end bearing 2054 located below the manifold cavity 201. The rotating shaft assembly air outlet end 2053 is sealed to the bottom surface of the manifold cavity 201 through the outlet end bearing 2054.

[0037] The valve control rotating arm 3 mainly includes: a rotating arm 301, a valve control device 302, and a limit switch 303. The valve control device 302 mainly consists of a motor 3021 and a control wrench 3022. One end of the rotating arm 301 is fixedly connected to the air outlet end 2053 of the rotating shaft assembly, and the other end is fixed with the valve control device 302 and the limit switch 303. The motor 3021 is preferably a pneumatic motor.

[0038] The upper part of the manifold 201 is provided with multiple positioning blocks 3031, which cooperate with the limit switch 303 to realize the positioning of the rotating arm 301.

[0039] Based on the gas extraction parameter inspection and control device disclosed in the above embodiments, the borehole gas extraction parameter inspection and control can be realized. Specifically, it includes: controlling the drive device 4 through the control box to drive the valve control rotating arm 3 and the rotating gas guide pipe 204 to rotate, and positioning through the limit switch 303 and the positioning block 3031. After the limit switch 303 contacts the positioning block 3031, the control box receives the limit switch switch change signal and counts, controls the drive device 4 to stop driving, and the valve control rotating arm 3 stops at the position of the connection and extraction pipe group 1 of a certain borehole. At this time, the valve control device 302 is located in front of the mechanical valve 102. The output shaft of the motor 3021 can be rotated through the control box to drive the control wrench 3022 to rotate, and then the control wrench 3022 controls the mechanical valve 102 to rotate, thereby realizing the control of the opening degree of the mechanical valve 102 and achieving the control effect of the connection and extraction pipe group 1 conduction state.

[0040] Meanwhile, the air inlet 2041 of the rotating air pipe 204 is sealed and connected to the borehole connecting pipe assembly 1. The borehole gas flows through the connecting pipe assembly 1, the air inlet 202, the air inlet 2041 of the air pipe, the air outlet 2043 of the air pipe, and the air outlet end 2053 of the rotating shaft assembly to the measuring device 5. The measuring device 5 is used to measure the parameters of the extracted gas in the borehole.

[0041] Based on the gas extraction parameter inspection and control device disclosed in the above embodiments, it can also realize the measurement of the gas flow parameters, specifically including: controlling the rotating gas guide tube 204 to stop at the position of the gas flow chamber 201, at which time the gas guide tube inlet 2041 is connected to the gas flow measurement outlet chamber 203. When measuring the gas flow parameters, because it is necessary to connect the gas flow chamber 201 and the rotating gas guide tube 204 separately, and then measure the gas flow parameters through the measuring device 5, it is necessary to block the gas flow outlet 206 used for gas flow extraction in the non-measuring state of each borehole. In this embodiment, when the rotating gas guide pipe 204 stops at the position of the manifold 201, the lower sealing scraper 2044 seals and blocks the manifold outlet 206, and the manifold outlet 206 is no longer connected to the manifold 201. After the gas from each borehole flows through the extraction pipe group 1 into the manifold 201, it flows through the gas guide pipe inlet 2041 and then through the measuring device 5. The measuring device 5 is used to measure the total extracted gas parameters after the gas from each borehole is merged.

[0042] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A gas extraction parameter inspection and control device, characterized in that: include: A connecting pipe for connecting with the drilling and sealing pipeline, a converging flow sampler with a hollow converging flow cavity inside, an air guide tube rotating shaft group, a rotating air guide tube, and a rotating arm; Several air inlets connected to the confluence cavity are arranged in sequence along the side of the confluence sampler, and the air inlets are respectively connected to corresponding suction pipes, and each suction pipe is provided with a mechanical valve; the air guide tube rotating shaft group passes through the top surface and the bottom surface of the confluence sampler and can rotate relatively; one end of the air guide tube rotating shaft group is connected to a driving device, and the other end is connected to a measuring device; One end of the rotating air guide tube in the confluence cavity is fixed to and communicated with the air guide tube rotating shaft group, and the other end is used to communicate with any connecting and extraction tube as the air guide tube rotating shaft group rotates; One end of the rotating arm is fixedly connected to the rotating axis group of the air tube outside the confluence sampler, and the other end is provided with a valve control device. The rotating arm and the rotating air tube point in the same direction, so that the rotating air tube is connected to any connecting tube and the valve control device of the rotating arm acts on the mechanical valve of the connecting tube.

2. The extraction gas parameter inspection and control device according to claim 1 is characterized in that: The side of the confluence sampler is also provided with a confluence measurement outlet cavity communicated with the confluence cavity; the other end of the rotating air guide tube is also used to rotate with the rotation axis group of the air guide tube, pointing to the confluence measurement outlet cavity to communicate with the confluence cavity; A confluence air outlet is arranged on the bottom of the confluence sampler, and a lower sealing scraper is arranged under the rotating air guide tube, so that when the rotating air guide tube points to the confluence measurement air outlet cavity, the lower sealing scraper blocks the confluence air outlet.

3. The extraction gas parameter inspection and control device according to claim 1 or 2, characterized in that: An air outlet is provided at one end of the rotating air pipe, and the rotating air pipe is connected to the air pipe rotating shaft assembly through the air outlet. An air duct inlet is provided at the other end of the rotating air duct; an air duct inlet seal is provided on the outside of the air duct inlet of the rotating air duct, so that the air duct inlet is connected to the inner wall of the confluence cavity through the air duct inlet seal.

4. The extraction gas parameter inspection and control device according to claim 2 is characterized in that: The lower sealing scraper is provided with a lower sealing scraper sealing member, which is used for sealing the converging air outlet through the lower sealing scraper.

5. The extraction gas parameter inspection and control device according to claim 1, characterized in that: A driving connection end is provided at the upper end of the airway tube rotating shaft group, and the driving device is connected to the airway tube rotating shaft group via the driving connection end; A rotating shaft group air guide outlet is provided at the lower end of the air guide tube rotating shaft group, and the air guide tube rotating shaft group is connected with the measuring device through the rotating shaft group air guide outlet.

6. The extraction gas parameter inspection and control device according to claim 5, characterized in that: The confluence sampler is provided with a driving connection end bearing located above the confluence cavity, and the driving connection end passes through the driving connection end bearing and is sealed to the top surface of the confluence cavity. The confluence sampler is also provided with an outlet end bearing located below the confluence cavity, and the air guide outlet end of the rotating shaft group passes through the outlet end bearing and is sealed to the bottom surface of the confluence cavity.

7. The extraction gas parameter inspection and control device according to claim 1, characterized in that: The driving device is a pneumatic motor.

8. The extraction gas parameter inspection and control device according to claim 1, characterized in that: The valve regulating device on the rotating arm comprises a regulating wrench and a motor, wherein the motor is connected to the regulating wrench and is used for driving the regulating wrench.

9. The extraction gas parameter inspection and control device according to claim 8, characterized in that: A limit switch is provided on the bottom surface of the rotating arm, and positioning blocks corresponding to each connecting pipe are provided on the upper part of the confluence cavity of the confluence sampler, so that when the limit switch contacts and positions any positioning switch, the regulating wrench can act on the mechanical valve on the connecting pipe corresponding to the positioning block.

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