Intelligent monitoring anti-overrun dust falling equipment for drilling process of mine

Abstract

The utility model discloses intelligent monitoring anti-overrun dust falling equipment for a mining drilling process. The intelligent monitoring anti-overrun dust falling equipment comprises a bin body base, a dust falling water bin, a dust falling filter screen, a pressurizing extraction device and a methane monitoring and alarming device, wherein the dust-falling water sump is divided into a gas extraction space and a dust-falling space by the dust-falling filter screen; by means of the mode, the dust problem is solved, and gas overflowing from the drill hole can be extracted; after the drilling process is completed, waste water can be transferred to a waste water collecting position through the bin body base and the moving wheels, and the problem that traditional equipment is difficult to carry and move after drilling is completed is effectively solved; in addition, the methane monitoring and alarming device can monitor the gas concentration value in the gas extraction space in real time, if the gas concentration value exceeds a threshold value, it is indicated that the hole spraying phenomenon occurs, at the moment, the methane monitoring and alarming device can give an alarm prompt, then workers stop drilling in time and start the pressurization extraction device to accelerate the gas extraction speed, gas over-limit accidents are effectively reduced, and the safety of gas extraction is improved. And the safety in the outburst coal seam drilling gas extraction operation is improved.

Description

Technical Field

[0001] The utility model relates to an intelligent monitoring and over-limit dust reduction device for a mining drilling process, belonging to the technical field of mine gas disaster prevention and control. Background Art

[0002] Coal will remain the main energy source and basic energy source in my country in the long term. With the increase in mining depth and the increasing degree of mining intensification, the threat of coal and gas outbursts faced by outburst mines is becoming more and more serious. Therefore, drilling underground in coal mines to pre-extract coal seam gas, thereby reducing the pressure and content of coal seam gas, is one of the important measures for gas control. However, a large amount of dust and coal powder are often generated during the drilling process. Excessive dust and coal powder pouring into the tunnel will not only increase the risk of explosion. In addition, when the gas pressure of the coal seam is high, drilling is prone to cause blowouts (that is, the gas concentration in the gushing gas mixture is high), which in turn causes gas over-limit accidents. The existing gas blowout prevention equipment cannot take into account the problems of dust reduction and gas extraction. The industry mainly uses a combination of multiple equipment. This not only makes the equipment larger, but also makes the collected dust inconvenient to carry.

[0003] Therefore, how to provide a new equipment that can not only collect the dust and coal powder generated during the drilling process, but also increase the gas extraction efficiency in time if a blowout phenomenon occurs, thereby avoiding gas over-limit accidents and improving the safety of drilling and gas extraction operations in protruding coal seams, is the problem that the utility model needs to solve. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides an intelligent monitoring and anti-overlimit dust reduction device for the mining drilling process, which can not only collect the dust and coal powder generated during the drilling process, but also promptly increase the gas extraction efficiency when a blowout phenomenon occurs, thereby avoiding gas overlimit accidents and improving the safety of drilling and gas extraction operations in protruding coal seams; in addition, it is convenient for the transportation of the collected dust and coal powder.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an intelligent monitoring and anti-overlimit dust reduction device for mining drilling process, including a bin base, a dust reduction water bin, a dust reduction filter, a pressurized extraction device and a methane monitoring and alarm device;

[0006] The dust reduction water bin is fixed on the upper part of the bin base, and a plurality of moving wheels are installed at the lower part of the bin base for moving the bin base relative to the ground; the dust reduction filter is installed in the dust reduction water bin, and the interior of the dust reduction water bin is divided into a dust reduction space and a gas extraction space, and a certain amount of water is contained in the dust reduction space; a slag inlet is provided on the side of the dust reduction water bin, and a gas extraction port is provided on the upper part, the slag inlet is connected with the dust reduction space, and is connected with the borehole through a pipeline, so as to transport the dust, coal powder and gas mixture generated during the drilling process to the dust reduction space through the slag inlet, the dust reduction filter blocks the dust and coal powder and makes them fall into the water for sedimentation, and the gas mixture enters the gas extraction space through the dust reduction filter; the gas extraction port is connected with one end of the gas extraction pipe, and the other end of the gas extraction pipe is connected with the underground gas extraction pipeline, so as to extract the gas mixture in the gas extraction space from the gas extraction port;

[0007] The methane monitoring and alarm device includes a methane sensor and an alarm. The methane sensor is installed on the upper part of the dust reduction water bin, and its detection end extends into the gas extraction space, and is used to monitor the real-time gas concentration value in the gas extraction space; the alarm is installed on the upper part of the dust reduction water bin and connected to the methane sensor, and is used to issue an alarm prompt when the real-time gas concentration value exceeds a threshold value; the booster extraction device is installed on the gas extraction pipe, and when the alarm prompts an alarm prompt, the booster extraction device is started to increase the extraction negative pressure of the gas extraction pipe.

[0008] Furthermore, the dust reduction water bin is composed of a rectangular shell and a right-angled trapezoidal shell which are connected to each other. The rectangular shell is located on the upper part of the right-angled trapezoidal shell. A dust baffle is provided in the right-angled trapezoidal shell. The upper end of the dust baffle is connected to the lower end of the rectangular shell, and the lower end of the dust baffle is in contact with the water surface, so as to prevent the dust and coal powder that have not settled in the water from floating to other locations.

[0009] Furthermore, a drainage groove is provided on the upper portion of the hypotenuse of the right-angled trapezoidal shell for injecting water into the dust reduction water bin and discharging the water after dust reduction.

[0010] Furthermore, the moving wheels are universal wheels, and each universal wheel is equipped with a locking mechanism. The universal wheels are used to facilitate movement during transportation, and the locking mechanism can lock the universal wheels to maintain stability when the device stops working.

[0011] Furthermore, the booster extraction device is a booster pump, which is easy to install and has good working stability.

[0012] Furthermore, the dust filter is made of metal material, which can increase the service life of the dust filter.

[0013] Compared with the prior art, the utility model adopts a combination of a bin base, a dust-reducing water bin, a dust-reducing filter, a pressurized extraction device and a methane monitoring and alarm device, wherein the dust-reducing filter divides the dust-reducing water bin into a gas extraction space and a dust-reducing space, which can block dust and coal powder and allow them to fall into the water and settle, and the gas mixture enters the gas extraction space through the dust-reducing filter; the dust is effectively settled by water, which not only solves the dust problem, but also can extract the gas overflowing from the borehole; and the dust and coal powder can be stored in the water in the dust-reducing water bin without affecting the surrounding environment; after the drilling process is completed, the dust and coal powder can be conveniently moved to the gas extraction space through the bin base and the moving wheels. The wastewater is transported to the wastewater collection point for collection, which effectively solves the problem that traditional equipment is difficult to carry and move during the drill bit removal process after drilling is completed; in addition, the methane monitoring and alarm device in the utility model can monitor the gas concentration value in the gas extraction space in real time, and compare it with the threshold value set in advance. If it exceeds the threshold, it means that a blowout phenomenon has occurred during the drilling process. At this time, it can issue an alarm prompt, and then the staff will stop drilling in time and start the booster extraction device to speed up the gas extraction speed. It can effectively guide the drillers to perceive the danger of gas exceeding the limit in advance, and conduct human intervention in time, effectively reduce the occurrence of gas exceeding the limit accidents, and improve the safety of drilling and gas extraction operations in protruding coal seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 yes Figure 1 Top view rotated 90°.

[0016] In the figure: 1-slag inlet, 2-methane monitoring and alarm device, 3-gas extraction pipe, 4-dust reduction filter, 5-dust reduction water tank, 6-pressurized extraction device, 7-drainage trough, 8-bin base, 9-universal wheel, 10-dust baffle. DETAILED DESCRIPTION

[0017] The utility model will be further described below.

[0018] like Figure 1 and 2 As shown, the utility model includes a bin base 8, a dust suppression water bin 5, a dust suppression filter 4, a pressurized extraction device 6 and a methane monitoring and alarm device 2;

[0019] The dust reduction water bin 5 is fixed to the upper part of the bin base 8, and a plurality of moving wheels are installed at the lower part of the bin base 8 for moving the bin base 8 relative to the ground; the moving wheels are universal wheels 9, and each universal wheel 9 is equipped with a locking mechanism; the universal wheels 9 are used to facilitate movement during transportation, and the locking mechanism can lock the universal wheels 9 to maintain stability when the device stops working; the dust reduction filter 4 is installed in the dust reduction water bin 5, and the interior of the dust reduction water bin 5 is divided into a dust reduction space and a gas extraction space, and a certain amount of water is contained in the dust reduction space; the dust reduction water bin 5 is provided with a slag inlet on the side and a gas extraction port on the top, the slag inlet is connected to the dust reduction space, and is connected to the drill hole through a pipeline, and is used to pass the dust, coal powder and gas mixed gas generated during the drilling process It is transported to the dust reduction space through the slag inlet, and the dust reduction filter 4 blocks the dust and coal powder and makes them fall into the water for sedimentation, and the gas mixture enters the gas extraction space through the dust reduction filter 4; the gas extraction port is connected with one end of the gas extraction pipe 3, and the other end of the gas extraction pipe 3 is connected with the underground gas extraction pipeline, which is used to extract the gas mixture in the gas extraction space from the gas extraction port; the dust reduction water tank 5 is composed of a rectangular shell and a right-angled trapezoidal shell that are connected to each other, the rectangular shell is located at the upper part of the right-angled trapezoidal shell, and a dust baffle 10 is arranged in the right-angled trapezoidal shell, the upper end of the dust baffle 10 is connected to the lower end of the rectangular shell, and the lower end of the dust baffle 10 is in contact with the water surface, which is used to prevent the dust and coal powder that have not settled in the water from floating to other positions;

[0020] The methane monitoring and alarm device 2 includes a methane sensor and an alarm. The methane sensor is installed on the upper part of the dust suppression water tank 5, and its detection end extends into the gas extraction space, which is used to monitor the real-time gas concentration value in the gas extraction space; the alarm is installed on the upper part of the dust suppression water tank 5 and connected to the methane sensor, which is used to issue an alarm when the real-time gas concentration value exceeds the threshold; the booster extraction device 6 is installed on the gas extraction pipe 3, and when the alarm issues an alarm, the booster extraction device 6 is started to increase the extraction negative pressure of the gas extraction pipe 3; the booster extraction device 6 is a booster pump. This is easy to install and has good working stability.

[0021] As an improvement of the utility model, a drainage groove 7 is provided on the upper part of the hypotenuse of the right-angled trapezoidal shell for filling water into the dust reduction water bin and discharging the water after dust reduction.

[0022] As another improvement of the present invention, the dust filter 4 is made of metal material. The use of this material can increase the service life of the dust filter 4.

[0023] The above-mentioned dust reduction filter 4, pressurized extraction device 6, methane monitoring and alarm device 2 and mobile wheels are all existing equipment or components and can be purchased on the market; among them, the methane monitoring and alarm device 2 has a threshold setting function, that is, if the real-time detected gas concentration value exceeds the threshold, an alarm will be issued.

[0024] Before use, the utility model is first transported to the vicinity of the desired drilling position by means of the mobile wheels, and then a certain amount of water is injected into the dust reduction water tank 5, and the gas concentration threshold is set in the methane sensor, and then the slag inlet is connected to the drilled hole through a pipeline, and the gas extraction pipe 3 is connected to the underground gas extraction pipeline; the dust, coal powder and gas mixture generated during the drilling process are transported to the dust reduction space through the slag inlet, and the dust reduction filter 4 blocks the dust and coal powder and causes them to fall into the water and settle, and the gas mixture passes through the dust reduction filter 4 into the gas extraction space; and then the gas mixture is extracted through the gas extraction port; the methane sensor of the methane monitoring and alarm device 2 detects the gas in the gas extraction space in real time. Concentration value, and compare it with the threshold. If the real-time gas concentration value exceeds the threshold, it means that a blowhole phenomenon has occurred in the borehole. At this time, the alarm will sound an alarm prompt, and the staff will stop drilling and promptly turn on the booster extraction device 6 to increase the extraction negative pressure of the gas extraction pipe 3, thereby increasing the extraction flow of the gas mixture, so that the gas mixture in the gas extraction space is quickly extracted until the real-time gas concentration value is lower than the threshold. At this time, the booster extraction device 6 is closed to complete the blowhole protection process; continue drilling, complete the drilling process at the current position, and finally transport the utility model to the wastewater collection position through the moving wheel, and discharge the water containing settled dust and coal powder from the dust removal water bin 5 for subsequent use.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent monitoring and dust reduction device for mining drilling process, characterized in that: It includes a silo base, a dust suppression water silo, a dust suppression filter, a pressurized extraction device, and a methane monitoring and alarm device; The dust reduction water bin is fixed on the upper part of the bin base, and a plurality of moving wheels are installed at the lower part of the bin base for moving the bin base relative to the ground; the dust reduction filter is installed in the dust reduction water bin, and the interior of the dust reduction water bin is divided into a dust reduction space and a gas extraction space, and a certain amount of water is contained in the dust reduction space; a slag inlet is provided on the side of the dust reduction water bin, and a gas extraction port is provided on the upper part, the slag inlet is connected with the dust reduction space, and is connected with the borehole through a pipeline, so as to transport the dust, coal powder and gas mixture generated during the drilling process to the dust reduction space through the slag inlet, the dust reduction filter blocks the dust and coal powder and makes them fall into the water for sedimentation, and the gas mixture enters the gas extraction space through the dust reduction filter; the gas extraction port is connected with one end of the gas extraction pipe, and the other end of the gas extraction pipe is connected with the underground gas extraction pipeline, so as to extract the gas mixture in the gas extraction space from the gas extraction port; The methane monitoring and alarm device includes a methane sensor and an alarm. The methane sensor is installed on the upper part of the dust reduction water bin, and its detection end extends into the gas extraction space, and is used to monitor the real-time gas concentration value in the gas extraction space; the alarm is installed on the upper part of the dust reduction water bin and connected to the methane sensor, and is used to issue an alarm prompt when the real-time gas concentration value exceeds a threshold value; the booster extraction device is installed on the gas extraction pipe, and when the alarm prompts an alarm prompt, the booster extraction device is started to increase the extraction negative pressure of the gas extraction pipe.

2. The mining drilling process intelligent monitoring and dust reduction prevention equipment according to claim 1 is characterized in that: The dust reduction water bin is composed of a rectangular shell and a right-angled trapezoidal shell which are connected to each other. The rectangular shell is located on the upper part of the right-angled trapezoidal shell. A dust baffle is provided in the right-angled trapezoidal shell. The upper end of the dust baffle is connected to the lower end of the rectangular shell, and the lower end of the dust baffle is in contact with the water surface to prevent dust and coal powder that have not settled in the water from floating out of the dust reduction water bin.

3. According to claim 2, the mining drilling process intelligent monitoring and dust reduction prevention equipment is characterized in that: A drainage groove is provided on the upper part of the hypotenuse of the right-angled trapezoidal shell, which is used to inject water into the dust reduction water tank and discharge the water after dust reduction.

4. The mining drilling process intelligent monitoring and dust reduction prevention equipment according to claim 1 is characterized in that: The moving wheels are universal wheels, and each universal wheel is equipped with a locking mechanism.

5. The mining drilling process intelligent monitoring and dust reduction prevention equipment according to claim 1 is characterized in that: The booster extraction device is a booster pump.

6. The mining drilling process intelligent monitoring and dust reduction prevention equipment according to claim 1 is characterized in that: The dust reduction filter is made of metal material.

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