Gas hole sealing device with real-time drill hole blockage judging and dredging functions

Abstract

The utility model discloses a gas hole sealing device with real-time drill hole blockage identification and desilting functions, which comprises an extraction pipe, a grouting pipe, a water injection pipe and a water drainage pipe, three bags are sleeved on the extraction pipe, the water injection pipe and the water drainage pipe, one end of the extraction pipe is provided with an electric butterfly valve and an extraction meter, one end of the water injection pipe is provided with a water injection pump, and the other end of the water injection pipe is provided with a drainage pipe. A water pump is installed at one end of the drainage pipe, a grouting pipe sequentially penetrates through the two bags, a grouting pump is installed at one end of the grouting pipe, a grouting plug is installed at the other end of the grouting pipe, and the electric butterfly valve, the extraction meter, the grouting pump, the water pump and the grouting pump are all connected to a PLC control box. The gas hole sealing device with the real-time drill hole blockage judging and recognizing function and the dredging function solves the problem that an extraction pipe opening is blocked due to hole sealing materials and broken coal in a drill hole, and slurry can be supplemented to a sealed hole in time.

Description

Technical Field

[0001] The utility model is applied to the technical field of gas extraction and hole sealing, and relates to a gas hole sealing device with the functions of real-time identification of borehole blockage and silt removal. Background Art

[0002] In recent years, with the rapid development of negative pressure gas extraction equipment, negative pressure extraction has become the main method of gas extraction in underground coal mines in my country. Negative pressure extraction requires the use of extraction pipes in the borehole to extract the gas, and to prevent air leakage, the borehole mouth needs to be sealed.

[0003] At present, most sealing materials are semi-fluid materials. As time goes by, semi-fluid materials will flow to the extraction port, causing the problem of blockage of the extraction port, and will also cause the sealing material between the bags to decrease, and then the problem of air leakage will occur. At the same time, the broken coal formed by the collapse of the borehole will also cause the extraction port to be blocked, and the gas in the borehole cannot flow into the extraction pipe. When the borehole blockage problem occurs, if it is not discovered in time and effective solutions are not taken, the gas extraction efficiency will be greatly reduced, affecting coal mine production. The purpose of this utility model is to provide a gas sealing device with real-time identification and silt removal functions of borehole blockage, which solves the existing problem of blockage near the extraction port caused by blockages formed by gas sealing materials and borehole collapse, and can timely fill grout to prevent air leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a gas hole sealing device with the functions of real-time identification of borehole blockage and silt removal, which solves the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a gas sealing device with the functions of real-time identification of borehole blockage and silt removal, comprising an extraction pipe, a grouting pipe, a water injection pipe and a drainage pipe, wherein the extraction pipe, the water injection pipe and the drainage pipe are covered with three bags, one end of the extraction pipe is equipped with an electric butterfly valve and an extraction meter, one end of the water injection pipe is equipped with a water injection pump, one end of the drainage pipe is equipped with a water extraction pump, the grouting pipe passes through the two bags in sequence, one end of the grouting pipe is equipped with a grouting pump, and the other end is equipped with a grouting plug, the electric butterfly valve, extraction meter, water injection pump, water extraction pump and grouting pump are all connected to a PLC control box.

[0007] Furthermore, the extraction tube is provided with a sieve opening at the right end.

[0008] Furthermore, the grouting pipe is provided with a grouting valve at the left end and a grouting plug at the right end, and two one-way grouting plugs are provided on the grouting pipe.

[0009] Furthermore, a water injection pump is installed at the left end of the water injection pipe, and a pressure nozzle is installed at the right end.

[0010] Furthermore, a one-way discharge valve is installed at the left end of the drainage pipe, and a discharge port is installed at the right end.

[0011] Furthermore, a pressure sensor is installed between the three bags, a flow rate sensor is installed near the sieve opening, and the pressure sensor and the flow rate sensor are connected to a PLC control box.

[0012] The beneficial effects of the utility model are:

[0013] (1) The utility model provides a gas sealing device with the functions of real-time identification of borehole blockage and silt removal. The extraction meter installed at the left end of the extraction pipe can collect the gas extraction flow of the extraction borehole in real time and transmit it to the PLC control box. When the extraction pipe is blocked, the extraction flow data will begin to show abnormalities. The PLC control box will identify the blockage of the extraction borehole based on the abnormal values, thereby realizing the function of real-time identification of borehole blockage.

[0014] (2) The utility model provides a gas sealing device with the functions of real-time identification of borehole blockage and silt removal. The water injection pump and the water extraction pump are connected to the PLC control box. When the PLC control box identifies that the borehole is blocked, the PLC control box controls the water injection pump and the water extraction pump to start. The water injection pump injects water into the borehole through the water injection pipe. The sealing material and crushed coal that block the extraction port in the borehole are pumped out from the drainage pipe along with the water flow by the water extraction pump, thereby realizing automatic silt removal in the borehole.

[0015] (3) The utility model provides a gas hole sealing device with the functions of real-time identification of borehole blockage and silt removal. The grouting valve is connected to the PLC control box. When the pressure sensor between the bags detects that the pressure is lower than the set pressure, the PLC control box will control the grouting valve to inject grout between the bags to realize automatic grouting.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a gas hole sealing device with the functions of real-time identification of borehole blockage and silt removal.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0019] In the figure, 1. extraction pipe, 2. grouting pipe, 3. water injection pipe, 4. drainage pipe, 5. one-way grouting port, 6. grouting plug, 7. sieve, 8. pressurized nozzle, 9. discharge port, 10. bladder, 11. pressure sensor, 12. flow rate sensor, 13. water injection pump, 14. water injection valve, 15. water pump, 16. one-way discharge valve, 17. electric butterfly valve, 18. extraction metering, 19. grouting pump, 20. grouting valve, 21. PLC control box DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] In the description of the present invention, it should be understood that the directional words "left end", "right end", "upper", "inside", "between" and the like indicating directions or positional relationships are only for the purpose of describing the present invention, rather than indicating that components or parts must have specific directions and positions, specific directional structures and operations, and therefore cannot be understood as limitations on the present invention.

[0022] The utility model provides a gas sealing device with the function of real-time identification of borehole blockage and silt removal, comprising an extraction pipe 1, a grouting pipe 2, a water injection pipe 3 and a drainage pipe 4, wherein three bags 10 are sleeved on the extraction pipe 1, the water injection pipe 3 and the drainage pipe 4, the left end of the extraction pipe 1 is equipped with an electric butterfly valve 17 and an extraction meter 18, the right end is equipped with a sieve mouth 7, the left end of the water injection pipe 3 is equipped with a water injection pump 13, a water injection valve 14 is installed near the water injection pump 13, a pressurized nozzle 8 is installed on the right end, a water pump 15 is installed on the left end of the drainage pipe 4, and a water meter 18 is installed near the left end of the drainage pipe 4. A one-way discharge valve 16 is installed at the position of the water pump 15, and a discharge port 9 is installed at the right end. The grouting pipe 2 passes through the two bags 10 in sequence. A grouting pump 19 is installed at the left end of the grouting pipe 2, and a grouting valve 20 is installed near the grouting pump 19. A one-way grouting port 5 is installed between the two bags 10, and a grouting plug 6 is installed at the right end. The pressure sensor 11, flow rate sensor 12, water injection pump 13, water pump 15, electric butterfly valve and grouting pump 18 are all connected to the PLC control box 20, and the drain pipe 4 is made of stainless steel pipe.

[0023] The electric butterfly valve 17 and the extraction meter 18 at the left end of the extraction pipe 1 are connected to the PLC control box 21. When the PLC control box 21 detects an abnormal value in the drilling extraction flow through the extraction meter 18, the PLC control box 21 determines that the extraction drilling has a blockage problem. The PLC control box 21 automatically controls the electric butterfly valve 17 to close and controls the water injection pump 13 to open. The water injection pump 13 injects water into the borehole through the pressurized nozzle 8 at the right end of the water injection pipe 3. A flow rate sensor 12 is installed near the sieve mouth 7. The flow rate sensor 12 is connected to the PLC control box 20. When the flow rate sensor 12 detects an increase in the flow rate near the sieve mouth 7, it indicates that the borehole blockage has been cleared. At this time, the PLC control box 21 controls the water injection pump 13 to close and the water injection ends.

[0024] The water pump 15 is connected to the PLC control box 20. After the water injection pump 13 is turned on, the PLC control box 20 controls the water pump to start 20 seconds later. The blockage flows into the drain pipe 4 through the discharge port 9 with the water flow, and is then pumped out of the drain pipe 4 by the water pump 13. The one-way discharge valve 16 near the water pump 15 will open under the action of the water pump 15 pumping water, and will close under the action of the negative pressure of extraction to prevent gas from flowing into the drain pipe. In order to prevent water from remaining in the borehole, the water pump 15 will automatically shut down under the action of the PLC control box 30 seconds after the water injection pump 13 is turned off.

[0025] The electric butterfly valve 17 at the left end of the extraction pipe 1 is connected to the PLC control box 20. When the water injection pump 13 and the water pump 15 are turned on, the PLC control box 20 controls the electric butterfly valve 17 to close automatically to prevent water from entering the extraction pipe. After the water injection pump 13 and the water pump 15 are turned off, the PLC control box 20 controls the electric butterfly valve 17 to open automatically to resume normal gas extraction. The flow rate sensor 12 continues to monitor the flow rate near the sieve mouth. The electric butterfly valve 17, the water injection pump 13 and the water pump 15 cannot be opened at the same time under the control of the PLC control box 20.

[0026] The grouting pump 19 and the pressure sensor 11 are both connected to the PLC control box 20. When the PLC control box 20 detects through the pressure sensor 11 that the pressure between the bags 10 is less than the set value, the grouting valve 20 opens and the PLC control box 20 controls the grouting pump 19 to automatically grout between the bags.

[0027] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A gas hole sealing device with real-time identification of borehole blockage and silt removal functions, characterized in that: The invention comprises an extraction pipe (1), a grouting pipe (2), a water injection pipe (3) and a drainage pipe (4), wherein the extraction pipe (1), the water injection pipe (3) and the drainage pipe (4) are covered with three bags (10), one end of the extraction pipe (1) is equipped with an electric butterfly valve (17) and an extraction meter (18), one end of the water injection pipe (3) is equipped with a water injection pump (13), one end of the drainage pipe is equipped with a water extraction pump (15), the grouting pipe passes through the two bags (10) in sequence, one end of the grouting pipe (2) is equipped with a grouting pump (19), and the other end is equipped with a grouting plug (6), the water injection pump (13), the water extraction pump (15), the electric butterfly valve (17), the extraction meter (18) and the grouting pump (19) are all connected to a PLC control box (21).

2. A gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1, characterized in that: The left end of the extraction pipe (1) is equipped with an electric butterfly valve, and the electric butterfly valve (17) is connected to the PLC control box (21).

3. The gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1 is characterized in that: The left end of the extraction pipe (1) is equipped with an extraction meter (18), and the extraction meter (18) is connected to the PLC control box (21).

4. The gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1 is characterized in that: The grouting pipe (2) is provided with a grouting pump (19) and a grouting valve (20) at the left end, and a grouting plug (6) at the right end. Two one-way grouting plugs (5) are provided on the grouting pipe (2).

5. The gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1 is characterized in that: The left end of the water injection pipe (3) is equipped with a water injection pump (13) and a water injection valve (14), and the right end is equipped with a pressurized nozzle (8).

6. The gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1 is characterized in that: The left end of the drainage pipe is equipped with a water pump (15) and a one-way discharge valve (16), and the right end is equipped with a discharge port (9).

7. The gas hole sealing device with the function of real-time identification of borehole blockage and silt removal according to claim 1 is characterized in that: A pressure sensor (11) is installed between the three bags (10), and a flow rate sensor (12) is installed near the sieve opening (7). The pressure sensor (11) and the flow rate sensor (12) are connected to a PLC control box (21).

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