Water and slag storage multifunctional device for extraction pipeline and construction method of water and slag storage multifunctional device

Abstract

The water and slag storage multifunctional device comprises a box body, a main pipe connector flange plate and a high-pressure water connector are arranged on the top and the left side of the box body respectively, the main pipe connector flange plate is connected to a valve, and the valve is installed at a low-lying point in a gas extraction pipeline or communicated with an extraction flow divider. The right side of the box body is provided with a slag discharge port and a water discharge port, the water discharge port is higher than the slag discharge port, the water discharge port is connected to an automatic water discharge device, the top of the box body is also provided with a pressure switching port, the pressure switching port is connected to a switching three-way valve, and one port of the switching three-way valve is connected to a negative pressure extraction system. The internal space of the box body is used for providing a storage space for water, slag and the like in a pipeline, the high-pressure water connector is communicated with high-pressure water, and the box body is flushed through the slag discharging opening for slag discharging.

Description

Technical Field

[0001] The invention relates to the technical field of water and slag storage equipment for extraction pipelines, and in particular to a multifunctional device for storing water and slag in extraction pipelines and a construction method thereof. Background Art

[0002] Under the current social development, coal will remain the main energy source in my country for a considerable period of time in the future. With the depletion of shallow resources and their transfer to deep areas, the importance of mine outburst prevention is increasing day by day. Coal and gas outburst is an abnormal dynamic phenomenon in which a large amount of coal and gas are suddenly thrown into the mining space under the combined action of ground stress and gas pressure. In the gas-dominated coal and gas outburst theory, it is believed that the coal body has a high gas content and a fast decomposition speed, which leads to a sharp increase in gas pressure in a limited space, and finally causes coal body destruction and outburst. Therefore, reducing the gas in the free and adsorbed state in the coal rock body is the key to ensuring the effective implementation of outburst prevention work.

[0003] Most of the mines in southwest my country are close-range coal seam groups, and most of them are coal and gas outburst coal seams. The geological structure of coal mines is complex, with high gas pressure, high gas content, low permeability and strong risk of outburst. When preventing coal and gas outburst accidents in coal seam mining, it is necessary to take into account the gas control of overlying and underlying coal seams. At this stage, the gas in the coal body is mainly extracted through construction drilling. Gas extraction has become an important basis for judging the implementation of "one mine, one policy" and "one face, one policy", and it is also an important link to ensure safe production.

[0004] In the implementation of the "eight measures" for gas control, it is emphasized that the goals of "zero gas over-limit" and "zero coal seam outburst" must be achieved. It is necessary to promote the refinement of gas extraction, improve the level of gas extraction, conduct refined management of gas extraction work, improve the effect of gas extraction, and ensure the negative pressure and pipe diameter of the extraction system, which is the basis for ensuring the amount of gas extraction. At present, under the existing drilling construction process conditions, when high-pressure gas is used as the drilling construction slag removal process, some drill cuttings or dust enter the extraction pipeline under the influence of the negative pressure of the extraction during construction, water accumulates in the completed borehole (downhole), or enters the extraction pipeline under the high negative pressure extraction state when the slag is not completely removed. These factors cause slag accumulation in the extraction system, affecting the gas extraction mixing volume, and water accumulation causes the negative pressure of gas extraction to decrease, which becomes the main reason for the poor extraction effect. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional device for storing water and slag in an extraction pipeline and a construction method thereof, so as to solve the technical problems existing in the prior art.

[0006] The technical solution adopted by the present invention is: a multifunctional device for storing water and slag in an extraction pipeline, comprising a box body, a main pipe interface flange and a high-pressure water interface are respectively arranged on the top and the left side of the box body, the main pipe interface flange is connected to a valve, the valve is installed at a low point in the gas extraction pipeline or is connected to the extraction diverter, the high-pressure water interface is connected to a high-pressure water pipe, a slag discharge port and a water drain port are arranged on the right side of the box body, the height of the water drain port is higher than the slag discharge port, the water drain port is connected to an automatic water drain device, and a pressure switching port is also arranged on the top of the box body, the pressure switching port is connected to a switching three-way valve, and one port of the switching three-way valve is connected to a negative pressure extraction system.

[0007] Furthermore, the above-mentioned slag discharge port is connected to an automatic water discharge device through a three-way valve.

[0008] Furthermore, a sealing flange is arranged on the front side of the box body, and the sealing flange is detachably and sealingly connected to a sealing disc.

[0009] Furthermore, a negative pressure observation hole is provided on the top of the box body, and a negative pressure gauge is installed in the negative pressure observation hole.

[0010] Furthermore, a transparent observation window is installed on the front side of the box.

[0011] Furthermore, the transparent observation window comprises a vertical strip hole arranged on the front side of the box body and a transparent blocking plate blocking the vertical strip hole.

[0012] Furthermore, the box body is also provided with a transverse compressed air pipe, and compressed air pipeline interfaces are provided at both outer ends of the compressed air pipe, and the compressed air pipeline interfaces are used to detachably connect the compressed air water blowing pipe of the compressed air system.

[0013] A construction method of a multifunctional device for storing water and slag in an extraction pipeline is as follows: after the extraction pipeline is laid, a valve is left at a low point in the extraction pipeline or at the lower end of a extraction diverter, the valve is connected to the main pipe interface flange on the top of the box body when the valve is closed, and a transparent sealing plate and a sealing disc are installed on the vertical strip hole and the sealing flange. During the slag cleaning operation, the high-pressure water interface is connected to the high-pressure water pipe of the high-pressure water supply system, and a switching three-way valve is installed at the slag discharge port to realize the closed slag discharge switching, and the slag accumulation is visually managed and observed through a transparent observation window. When the slag accumulation reaches the set During quantitative measurement, flush the box and discharge slag, close the valve on the top of the box, open the three-way valve installed at the slag discharge port, turn on high-pressure water, and enter the box through the high-pressure water interface to flush and discharge slag; when the accumulated slag in the pipeline is solidified and cannot be discharged, remove the blocking disc for cleaning; when draining water, connect the automatic water discharge device with the water discharge port for automatic water discharge. When the amount of accumulated slag in the pipeline is small and the amount of water gushing is large, the slag discharge port is connected to the automatic water discharge device through the switching three-way invention installed to increase the water discharge channel. When the automatic water discharge device cannot discharge water, close the switching three-way valve of the pressure switching port above the box.

[0014] Beneficial effects of the invention: Compared with the prior art, the present invention reduces the accumulation of water and slag in the pipeline by designing a water and slag storage device for the extraction pipeline, and discharges the accumulated water and slag out of the extraction pipeline by connecting the water discharge equipment and reserving the slag removal port, thereby overcoming the problems of water and slag accumulation in the extraction pipeline affecting the negative pressure and extraction volume of gas extraction, achieving normal operation of underground gas extraction, reducing the subsequent maintenance workload and difficulty of the extraction system, and ensuring that mine gas control is in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a multifunctional device for storing water and slag in the extraction pipeline; Figure 2 It is a schematic diagram of the three-dimensional structure of the multifunctional device for storing water and slag in the extraction pipeline (excluding the sealing disc and the sealing plate); Figure 3 It is a schematic diagram of the three-dimensional structure of the multifunctional device for storing water and slag in the extraction pipeline from another perspective. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with specific embodiments.

[0017] Example 1: Figure 1-3 As shown, a multifunctional device for storing water and slag in an extraction pipeline comprises a box body 1. A main pipe interface flange 2 and a high-pressure water interface 3 are respectively arranged on the top and left side of the box body 1. The main pipe interface flange 2 is connected to a valve, and the valve is installed at a low point in the gas extraction pipeline or is connected to the extraction diverter. The high-pressure water interface 3 is connected to a high-pressure water pipe. A slag discharge port 4 and a water discharge port 5 are arranged on the right side of the box body 1. The water discharge port 5 is higher than the slag discharge port 4. The water discharge port 5 is connected to an automatic water discharge device. A pressure switching port 6 is also arranged on the top of the box body 1. The pressure switching port 6 is connected to a switching three-way valve. The switch One port of the three-way valve is connected to the negative pressure extraction system. After being connected to the extraction pipeline system, the internal space of the box is used to provide storage space for water, slag, etc. in the pipeline, and the high-pressure water interface is connected to high-pressure water, and the box is flushed and slag is discharged through the slag discharge port. When the accumulated slag in the pipeline cannot be discharged, the side sealing disc can be removed for cleaning. The pressure switching port can be connected to the negative pressure extraction system by switching the three-way valve to ensure that a negative pressure environment is formed inside the pipeline, speeding up the speed at which water and slag enter the device. When the water volume increases and manual water discharge is required, switching the three-way valve can achieve rapid pressure relief, water discharge and slag discharge.

[0018] In order to improve the drainage efficiency, the slag discharge port 4 is connected to the automatic water discharge device through a three-way valve to increase the drainage channel and improve the drainage efficiency.

[0019] In order to avoid excessive slag accumulation inside that cannot be cleaned, a sealing flange 7 is provided on the front side of the box body 1. The sealing flange 7 is detachably sealed and connected to a sealing disc 8 by a screw 13. After the sealing disc is removed, timely cleaning is carried out. The diameter of the hole blocked by the sealing disc is larger than half the size of the front side of the box body. The sealing flange 7 protrudes from the front side of the box body to form a boss. The end face of the boss is provided with an annular sealing ring to improve the sealing effect.

[0020] In order to facilitate the understanding of the negative pressure inside the box, a negative pressure observation hole 10 is also provided on the top of the box 1. The negative pressure observation hole 10 is installed with a negative pressure gauge. The negative pressure gauge can be used to quickly understand the size of the negative pressure in the box. It is installed on the top and does not affect its use. The height of the water accumulation inside the box can be judged according to the change of negative pressure.

[0021] In order to conveniently observe the amount of slag accumulated inside the box, a transparent observation window 9 is installed on the front side of the box 1. By looking through the transparent observation window, the slag accumulation situation inside the box can be conveniently and quickly understood.

[0022] In order to facilitate the production and observation of internal slag accumulation problems, the transparent observation window 9 includes a vertical strip hole 901 arranged on the front side of the box body 1 and a transparent sealing plate 902 sealed on the vertical strip hole 901 with a screw 903. This structure is convenient for observing the slag accumulation inside the box body, has a simple structure, low cost, and is easy to assemble and disassemble. The vertical strip hole 901 protrudes forward around a circle to form an annular boss, and the annular boss is provided with an annular groove for installing a sealing ring. After the sealing ring is installed, the sealing effect can be improved.

[0023] The box body 1 is also provided with a transverse compressed air pipe 11, and compressed air pipeline interfaces 12 are provided at both outer ends of the compressed air pipe 11. The compressed air pipeline interface 12 is used for detachably connecting the compressed air water blowing pipe of the compressed air system. When there is a downward hole in the extraction system, it is necessary to blow water in the hole regularly. Although the compressed air pipe 11 and the box body 1 are integrated, they are closed and isolated from each other. They are connected to the compressed air system through the compressed air pipe interface and connected to the compressed air water blowing pipe, which simplifies the pipeline laying project in the tunnel, integrates the compressed air water blowing pipeline of the descending drilling hole, and reduces the extension and maintenance project of the descending drilling hole water blowing pipeline.

[0024] A switching three-way valve is installed at the pressure switching port. One end of the switching three-way valve is connected to the extraction system to form a negative pressure environment inside the pipeline, which speeds up the entry of water and slag into the device. When the automatic water discharge device fails, the control valve above the device is manually closed, and the negative pressure entry end is closed by switching the three-way valve, and the negative pressure in the device is quickly released to speed up the water discharge.

[0025] A negative pressure gauge is installed at the negative pressure observation hole, and the end of the negative pressure gauge is adjusted according to actual conditions, but it must be higher than the drain port. When the automatic drain device operates normally, the water level in the device is lower than the end of the negative pressure gauge, and the negative pressure is displayed normally. When the automatic drain device fails or the amount of water in the pipe increases, the water level in the device gradually rises and is higher than the end of the negative pressure gauge, causing the negative pressure to return to zero. According to the display of the negative pressure gauge, the automatic drain device is inspected and maintained or a drain channel is added, so as to give full play to the maintenance and management level of the extraction pipeline.

[0026] Embodiment 2: A construction method of a multifunctional device for storing water and slag in an extraction pipeline is as follows: after the extraction pipeline is laid, a valve is left at a low point in the extraction pipeline or at the lower end of the extraction diverter, and the valve is connected to the main pipe interface flange on the top of the box body when the valve is closed, and a transparent sealing plate and a sealing disc are installed on the vertical strip hole and the sealing flange. During the slag cleaning operation, the high-pressure water interface is connected to the high-pressure water pipe of the high-pressure water supply system, and a switching three-way valve is installed at the slag discharge port to realize the closed slag discharge switch, and the slag accumulation is visually managed and observed through a transparent observation window. When the set amount is reached, the box is flushed and the slag is discharged. The valve on the top of the box is closed, the three-way valve installed at the slag discharge port is opened, and high-pressure water is turned on to enter the box through the high-pressure water interface to flush and discharge the slag. When the accumulated slag in the pipeline is solidified and cannot be discharged, the sealing disc is removed for cleaning. During the water discharge operation, the automatic water discharge device is connected to the water discharge port for automatic water discharge. When the amount of accumulated slag in the pipeline is small and the amount of water gushing is large, the slag discharge port is connected to the automatic water discharge device through the switching three-way invention installed to increase the water discharge channel. When the automatic water discharge device cannot discharge water, close the switching three-way valve of the pressure switching port above the box.

[0027] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multifunctional device for storing water and slag in a pumping pipeline, characterized in that: The invention comprises a box body (1), wherein the top and left sides of the box body (1) are respectively provided with a main pipe interface flange (2) and a high-pressure water interface (3), wherein the main pipe interface flange (2) is connected to a valve, and the valve is installed at a low point in the gas extraction pipeline or is connected to an extraction diverter, and the high-pressure water interface (3) is connected to a high-pressure water pipe. The right side of the box body (1) is provided with a slag discharge port (4) and a water discharge port (5), wherein the height of the water discharge port (5) is higher than that of the slag discharge port (4), and the water discharge port (5) is connected to an automatic water discharge device. The top of the box body (1) is also provided with a pressure switching port (6), wherein the pressure switching port (6) is connected to a switching three-way valve, and one port of the switching three-way valve is connected to a negative pressure extraction system.

2. A multifunctional device for storing water and slag in a pumping pipeline according to claim 1, characterized in that: The slag discharge port (4) is connected to an automatic water discharge device via a three-way valve.

3. A multifunctional device for storing water and slag in a pumping pipeline according to claim 1 or 2, characterized in that: A sealing flange (7) is provided on the front side of the box body (1), and the sealing flange (7) is detachably sealed and connected to a sealing disc (8).

4. A multifunctional device for storing water and slag in a pumping pipeline according to claim 1 or 2, characterized in that: A negative pressure observation hole (10) is also provided on the top of the box body (1), and a negative pressure gauge is installed in the negative pressure observation hole (10).

5. A multifunctional device for storing water and slag in a pumping pipeline according to claim 1 or 2, characterized in that: A transparent observation window (9) is installed on the front side of the box body (1).

6. A multifunctional device for storing water and slag in a pumping pipeline according to claim 4, characterized in that: The transparent observation window (9) comprises a vertical strip hole (901) arranged on the front side of the box body (1) and a transparent blocking plate (902) blocking the vertical strip hole (901).

7. A multifunctional device for storing water and slag in a pumping pipeline according to claim 1 or 2, characterized in that: The box body (1) is also provided with a transverse compressed air pipe (11), and compressed air pipeline interfaces (12) are provided at two outer ends of the compressed air pipe (11). The compressed air pipeline interfaces (12) are used to detachably connect a compressed air water blowing pipe of a compressed air system.

8. The construction method of a multifunctional device for storing water and slag in a pumping pipeline according to claim 1, characterized in that: The method is as follows: after the extraction pipeline is laid, a valve is left at the low point of the extraction pipeline or the lower end of the extraction diverter. When the valve is closed, the valve is connected to the main pipe interface flange on the top of the box, and a transparent sealing plate and a sealing disc are installed on the vertical strip hole and the sealing flange. During the slag cleaning operation, the high-pressure water interface is connected to the high-pressure water pipe of the high-pressure water supply system, and a switching three-way valve is installed at the slag discharge port to realize the closed slag discharge switch. The slag accumulation is visually managed and observed through a transparent observation window, and the box is flushed when the slag accumulation reaches the set amount. To discharge slag, close the valve on the top of the box, open the three-way valve installed at the slag discharge port, turn on the high-pressure water, and let it enter the box through the high-pressure water interface to flush the slag; when the accumulated slag in the pipeline is solidified and cannot be discharged, remove the sealing disc for cleaning; when draining water, connect the automatic water draining device with the water drain port for automatic water draining. When the amount of accumulated slag in the pipeline is small and the amount of water gushing is large, the slag discharge port is connected to the automatic water draining device through the switching three-way invention installed to increase the water draining channel. When the automatic water draining device cannot drain water, close the switching three-way valve of the pressure switching port above the box.

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