A quick deflation and structure protection collaborative device based on a mine sealing air wall

Abstract

The application discloses a kind of based on the quick deflation and structure protection coordination device of mining plugging air wall, belong to mine gas disaster prevention technical field.This kind of based on the quick deflation and structure protection coordination device of mining plugging air wall, including air wall body, including inner bag and outer bag, the outer side of outer shell is equipped with a pair of horizontal slide rail channel and a pair of vertical slide rail channel, air wall body is equipped with inflation hole and deflation hole, further including air wall protection assembly, including horizontal protection assembly and vertical protection assembly, further including deflation assembly, including delivery pipeline and clamp, delivery pipeline one end deflation hole screw connection, other end inserts the borehole of gas extraction pipeline and is fixed by clamp, by the horizontal protection assembly and vertical protection assembly of being set, air wall body is protected, avoid when air wall body is moved, it is collided with sharp object to cause air wall body damage, utilize the negative pressure environment of gas extraction pipeline to air wall body is deflated quickly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine gas disaster prevention, and in particular to a rapid air release and structure protection collaborative device based on a mine sealing air wall. BACKGROUND

[0002] China's energy endowment presents the obvious characteristics of "rich in coal, poor in oil and little gas", which determines the core position of coal in the energy system. Based on the energy transition period of the next 20-30 years, the strategic value of coal will further highlight - as the "bottom protection" of energy security, its irreplaceability has been deeply integrated into the national energy strategy planning. Based on this realistic picture, China's energy structure will maintain a pattern dominated by coal for a long time, continue to bear the dual mission of ensuring energy security and driving economic development, and become a stable cornerstone supporting social progress.

[0003] With the continuous deepening of coal resource exploitation, complex and variable geological conditions have become a major challenge in the field of coal production. Many mines are experiencing a significant shift from low gas to high gas, which not only greatly increases the difficulty coefficient of mining, but also causes a series of serious safety hazards, such as upper corner gas overrun, sudden increase in gas emission, and local gas accumulation. Especially the problem of upper corner gas overrun, if not timely and effective control, will have a very adverse effect on the gas concentration of the working face, and thus pose a serious threat to the safe operation environment of the entire mine.

[0004] In view of this, the industry generally recognizes and adopts the advanced technology of mine sealing air wall to implement precise and efficient sealing of the upper corner gas overrun area. The implementation of this strategy not only effectively cuts off the diffusion path of gas in the overrun area to the working face, ensuring that the gas concentration in the operating area always remains within the safety standard, providing indispensable protection for the life safety of personnel underground and the stable operation of equipment; at the same time, precise sealing of the mine air wall is also an important cornerstone for improving the efficiency of mine exploitation and promoting efficient and green production. However, in actual operation, the current mine sealing air wall still has deficiencies. On the one hand, there is a lack of perfect air wall protection facilities, and because the professionalism of mine workers is not strong, workers start to advance the air wall when it still retains most of the gas, causing the air wall to be torn by some sharp objects in the roadway during the advancing process, resulting in loss of the air wall and greatly affecting the production efficiency of the coal mine. On the other hand, the sealing air wall takes too long to release air, which seriously affects the production progress in actual use. SUMMARY

[0005] The purpose of the present application is to overcome the problems in the prior art and provide a rapid air release and structure protection collaborative device based on a mine sealing air wall to prevent damage to the air wall body during movement and affect the construction progress.

[0006] The application provides a quick gas leakage and structure protection collaborative device based on a mine sealing air wall, which comprises an air wall body, an inner container and an outer container, a pair of horizontal sliding rail grooves and a pair of vertical sliding rail grooves are arranged between the inner container and the outer container, the horizontal sliding rail groove is a ladder-shaped notch without a baffle, the vertical sliding rail groove is a ladder-shaped notch with a baffle, the air wall body is provided with an inflation hole and a gas leakage hole, and the device further comprises an air wall protection assembly, which comprises a horizontal protection assembly and a vertical protection assembly, the horizontal protection assembly is in sliding connection with the horizontal sliding rail groove, the vertical protection assembly is in sliding connection with the vertical sliding rail groove, the horizontal protection assembly and the vertical protection assembly wrap the air wall body, adjacent horizontal protection assemblies and vertical protection assemblies are connected through positioning devices, and the device further comprises a gas leakage assembly, which comprises a conveying pipeline and a clamp, one end of the conveying pipeline is in threaded connection with the gas leakage hole, a hole is drilled on a gas extraction pipeline, and the other end of the conveying pipeline is inserted into the hole drilled on the gas extraction pipeline and is fixed through the clamp.

[0007] Preferably, the inner container and the outer container are made of aramid fiber reinforced nitrile rubber composite material.

[0008] Preferably, the horizontal protection assembly comprises a pair of horizontally arranged first protection air walls, and each of the pair of first protection air walls is provided with a first sliding block close to one side of the outer container, and the first sliding block is in sliding connection with the horizontal sliding rail groove.

[0009] Preferably, the vertical protection assembly comprises a pair of vertically arranged second protection air walls, each of the pair of second protection air walls is provided with a second sliding block close to one side of the outer container, the second sliding block is in sliding connection with the vertical sliding rail groove, the upper end of the vertical sliding rail groove is provided with a first limiting baffle, the second protection air wall is provided with a second limiting baffle at the joint with the first protection air wall, the second sliding block slides into the top end of the vertical sliding rail groove from top to bottom and is attached to the first limiting baffle, and the first sliding block slides into the horizontal sliding rail groove and is attached to the second limiting baffle at one end.

[0010] Preferably, the positioning device comprises an outer sleeve, a positioning cylinder, a starting button, an in-situ clamping groove, a clamping device, a reset button and a telescopic fixing ball, the top of the second protection air wall is provided with a positioning circular hole matched with the positioning cylinder, the positioning cylinder is inserted into the outer sleeve, the end of the positioning cylinder is fixedly connected with the starting button, a reset spring is sleeved on the positioning cylinder, the end of the positioning cylinder away from the starting button is provided with the telescopic fixing ball, the clamping device is arranged on the positioning cylinder, the outer sleeve is provided with a positioning clamping groove, and the reset button is vertically and slidably inserted into the positioning clamping groove.

[0011] Preferably, the clamp selects a DN50 clamp, and the conveying pipeline adopts a PE hose with an inner diameter of 50 mm; after the deflation is completed, a safety valve is installed at the drill hole formed on the extraction pipeline.

[0012] Preferably, the inner diameter of the deflation hole is greater than the inner diameter of the inflation hole.

[0013] Preferably, the thickness of the inner container of the air wall body, the horizontal protection air wall and the vertical protection air wall is 5-8 cm.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: the quick deflation and structure protection cooperative device based on a mine sealing air wall of the present application protects the air wall body through the horizontal protection assembly and the vertical protection assembly, avoids damage to the air wall body caused by collision with sharp objects during movement of the air wall body, and the horizontal protection assembly and the vertical protection assembly are respectively detachably installed through the horizontal sliding rail groove and the vertical sliding rail groove, so as to facilitate replacement at any time; first, a drill hole is formed in the gas extraction pipeline; then, a hollow threaded pipeline joint is threadedly connected with the deflation hole of the main body type mine sealing air wall; then, another pipeline is inserted into the drill hole and connected through a clamp; and simultaneously, the negative pressure environment of the gas extraction pipeline is utilized to quickly deflate the main body type mine sealing air wall. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a use schematic view of the quick deflation and structure protection cooperative device based on a mine sealing air wall of the present application.

[0016] Figure 2 It is an explosion structure schematic view of the horizontal protection assembly, the vertical protection assembly and the air wall body of the present application.

[0017] Figure 3 It is a structure schematic view of the horizontal protection assembly of the present application.

[0018] Figure 4 It is a structure schematic view of the vertical protection assembly of the present application.

[0019] Figure 5 It is a structure schematic view of the positioning device of the present application.

[0020] Figure 6 It is a structure schematic view of the deflation assembly of the present application.

[0021] Explanation of reference numerals in the attached drawings: 1. Air wall body; 101. Inner liner; 102. Outer liner; 2. Horizontal slide rail channel; 3. Vertical slide rail channel; 4. Horizontal protective component; 41. First protective air wall; 42. First slider; 5. Vertical protective component; 51. Second protective air wall; 52. Second slider; 53. First limiting baffle; 54. Second limiting baffle; 6. Positioning device; 61. Outer sleeve; 62. Positioning cylinder; 63. Start button; 64. In-situ slot; 65. Positioning device; 66. Reset button; 67. Telescopic fixing ball; 68. Reset spring; 610. Positioning slot; 69. Positioning hole; 7. Air venting component; 71. Conveying pipe; 72. Clamp; 8. Air vent; 9. Inflation hole. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-6 To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0023] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" or "including" indicate that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.

[0024] This invention provides a rapid venting and structural protection synergistic device based on a mine-use sealing gas wall, such as... Figures 1-6As shown, including: air wall body 1, including inner bag 101 and outer bag 102, a pair of horizontal slide rail groove 2 and a pair of vertical slide rail groove 3 are arranged outside the outer bag 102, the horizontal slide rail groove 2 is a ladder notch without baffle, the vertical slide rail groove 3 is a ladder notch with baffle, the outer bag 102 is provided with inflation hole 9 and deflation hole 8, further comprising air wall protection assembly, including horizontal protection assembly 4 and vertical protection assembly 5, the horizontal protection assembly 4 is connected with the horizontal slide rail groove 2, the vertical protection assembly 5 is connected with the vertical slide rail groove 3, the horizontal protection assembly 4 and the vertical protection assembly 5 wrap the outer bag 102, the adjacent horizontal protection assembly 4 and vertical protection assembly 5 are connected through positioning device 6, further comprising deflation assembly 7, including conveying pipeline 71 and clamp 72, one end of the conveying pipeline 71 is connected with the deflation hole 8 through screw thread, drilling hole is arranged on the gas extraction pipeline, the other end of the conveying pipeline 71 is inserted into the drilling hole of the gas extraction pipeline and fixed through the clamp 72.

[0025] In the embodiment, the horizontal protection assembly 4 and the vertical protection assembly 5 are arranged to protect the air wall body 1, so as to avoid damage of the air wall body 1 caused by sharp objects when the air wall body 1 is moved, so as to be replaced at any time, which is equivalent to connecting a protective sleeve to the wall body, when the sharp object appears, even if it is scratched, only the horizontal protection assembly 4 and the vertical protection assembly 5 are damaged, and the air wall body 1 is not damaged, and the damaged part can be replaced by a spare part;

[0026] And the horizontal protection assembly 4 and the vertical protection assembly 5 are respectively detachably installed through the horizontal slide rail groove 2 and the vertical slide rail groove 3, and are connected through the positioning device 6 of the main body part and the structural protection device, so that the air wall has good air tightness, and the operation of the replacement device is convenient and simple;

[0027] In the application, the gas extraction pipeline is first drilled, then the hollow threaded pipe joint is screwed with the deflation hole 8 of the outer bag 102, and then another pipe is inserted into the drilling hole and connected through the clamp 72, and the negative pressure environment of the gas extraction pipeline is used to quickly deflate the main body type mine sealing air wall.

[0028] Preferably, as shown in the figure, Figure 1 The inner bag 101 and the outer bag 102 are made of aramid fiber reinforced nitrile rubber composite material.

[0029] The inner liner 101 adopts a common mine gas wall structure that has been proven mature and reliable through long-term practice. It can stably bear the internal gas pressure and ensure that the basic sealing function of the gas wall is realized. The outer liner 102 is made of aramid fiber reinforced nitrile rubber with high friction coefficient and super wear resistance after multiple rigorous screenings. The high strength and high modulus of aramid fiber combined with the good elasticity and oil resistance of nitrile rubber gives the outer liner 102 sufficient flexibility to adapt to the deformation requirements of the gas wall during installation and use, and also has an extremely high friction coefficient. It can maintain stable friction on the rough and irregular roadway wall surface underground, preventing the gas wall from shifting due to external forces. At the same time, its super wear resistance ensures that the outer liner 102 can remain intact for a long time under harsh working conditions such as frequent friction with the roadway wall and possible impact from gangue, effectively extending the service life of the gas wall and reducing maintenance costs.

[0030] Preferred, such as Figure 3 As shown, the horizontal protection component 4 includes a pair of horizontally arranged first protective air walls 41. Each pair of first protective air walls 41 is provided with a first slider 42 on the side near the outer liner 102. The first slider 42 is slidably connected to the horizontal slide rail channel 2.

[0031] In this embodiment, the horizontal protective component 4 is installed on the air wall body 1 via the horizontal slide rail channel 2. Because the opening of the horizontal slide rail channel 2 is trapezoidal, its characteristics enable it to provide a three-dimensional positioning and guiding function for the horizontal protective component 4. The horizontal slide rail channel 2 adopts a symmetrical layout, located on both sides of the air wall. The track spacing depends on the thickness of the air wall body 1. No limiting baffles are installed on either side of the channel. Furthermore, the materials selected for the double-rail slide rail channel should consider factors such as lightweight and corrosion resistance.

[0032] The vertical air wall structure protection device is equipped with a slider for sliding rail connection in the main body of the mine sealing air wall. At the same time, one side of the vertical air wall structure protection device also has a large double-rail sliding rail channel and 62 positioning cylinder holes, while the other side is equipped with a limit baffle to prevent the horizontal air wall structure protection device from sliding.

[0033] Preferred, such as Figure 4 As shown, the vertical protective component 5 includes a pair of vertically arranged second protective air walls 51. Each pair of second protective air walls 51 is provided with a second slider 52 on the side near the air wall body 1. The second slider 52 is slidably connected to the vertical slide rail groove 3. A first limiting baffle 53 is provided at the upper end of the vertical slide rail groove. A second limiting baffle 54 is provided at the junction of the second protective air wall 51 and the first protective air wall 41. The second slider 52 slides into the vertical slide rail groove from top to bottom and its top end is in contact with the first limiting baffle 53. The first slider 42 slides into the horizontal slide rail groove 2 and one end is in contact with the second limiting baffle 54.

[0034] In this embodiment, the vertical protection component 5 is installed on the air wall body 1 through the vertical slide rail channel 3. The groove of the vertical slide rail channel 3 is a trapezoidal groove, and the bottom length of the lower trapezoidal groove is slightly smaller than the upper bottom of the horizontal double-rail slide rail channel, so that the vertical slide rail connection is not affected by the horizontal direction. The rail spacing depends on the thickness of the air wall body 1. At the same time, a limiting baffle is provided on one side of the vertical double-rail slide rail channel to restrict the sliding of the vertical protection component 5. When selecting materials for the double-rail slide rail channel, factors such as lightness and corrosion resistance should be considered. The vertical protection component 5 and the horizontal protection component 4 are often spared for replacement.

[0035] Preferred, such as Figure 5 As shown, the positioning device 6 includes an outer sleeve 61, a positioning cylinder 62, a start button 63, an in-situ slot 64, a locking device 65, a reset button 66, and a retractable fixing ball 67. The top of the second protective air wall is provided with a positioning hole that matches the positioning cylinder 62. The positioning cylinder 62 is inserted into the outer sleeve 61. The start button 63 is fixedly connected to the end of the positioning cylinder 62. A reset spring 68 is sleeved on the positioning cylinder 62. A retractable fixing ball 67 is provided at the end of the positioning cylinder 62 away from the start button 63. The locking device 65 is provided on the positioning cylinder 62. The outer sleeve 61 is provided with a positioning slot 610. The reset button 66 is vertically slidably inserted into the positioning slot 610.

[0036] In this embodiment, when installing the horizontal protection component 4 and the vertical protection component 5, the start button 63 is pressed to push the positioning cylinder 62 forward. At this time, the locking device 65 moves from the original slot 64 to the positioning slot 610, and at the same time, part of the positioning cylinder 62 enters the positioning hole and pops out the retractable fixing ball 67 (the ball is made of TPE material), thereby completing the connection.

[0037] When the horizontal protective component 4 or the vertical protective component 5 is damaged, press the reset button 66 to cause the inner sleeve of the positioning device 6 to retract rapidly, the locking device 65 to return to its original position in the slot 64, and the fixing ball to retract into the inner sleeve, so that the damaged air wall structure protective device can be removed and replaced immediately.

[0038] Preferred, such as Figure 6 As shown, clamp 72 is selected as DN50 type clamp 72, and the conveying pipeline 71 adopts PE hose with an inner diameter of 50mm. After the gas is released, a safety valve is installed at the drill hole opened on the extraction pipeline. The inner diameter of the vent hole 8 is larger than the inner diameter of the inflation hole 9. The thickness of the inner liner 101 of the air wall body 1, the horizontal protective air wall and the vertical protective air wall is 5cm-8cm.

[0039] In this embodiment, the vent hole 8 adopts a threaded design and connects to the vent pipe for rapid venting of gas inside the gas wall; the inflation hole 9 is a common gas wall vent setting for inflation. The materials of the inner and outer liner 102 in the horizontal protection component 4 and the vertical protection component 5 are consistent with the conventional inner and outer liner 102 materials of the gas wall body 1. In terms of structural parameters, the thickness of the inner liner 101 is optimized to a range of 5-8cm by consulting data. This design not only meets the needs of roadway deformation compensation, but also protects the main type of mine sealing gas wall. Inflation is carried out by connecting the inflation pump in the mine to the inflation hole 9. Venting is carried out by first drilling a hole in the gas extraction pipeline, then threading the hollow threaded pipe joint to the vent hole 8, and then inserting another section of pipe into the drilled hole and connecting it with the clamp 72. At the same time, the negative pressure environment of the gas extraction pipeline is used for rapid venting.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid venting and structural protection synergistic device based on a mine-use sealing gas wall, characterized in that, include: The air wall body (1) includes an inner liner (101) and an outer liner (102). The outer liner (102) is provided with a pair of horizontal slide rail channels (2) and a pair of vertical slide rail channels (3) on its outer side. The horizontal slide rail channels (2) are trapezoidal slots without baffles, and the vertical slide rail channels (3) are trapezoidal slots with baffles. The outer liner (102) is provided with an inflation hole (9) and an vent hole (8). The air wall protection assembly includes a horizontal protection assembly (4) and a vertical protection assembly (5). The horizontal protection assembly (4) is slidably connected to the horizontal slide rail channel (2), and the vertical protection assembly (5) is slidably connected to the vertical slide rail channel (3). The horizontal protection assembly (4) and the vertical protection assembly (5) enclose the outer liner (102). The positioning device (6) connects the interface of the horizontal protection component (4) and the vertical protection component (5); The venting assembly (7) includes a delivery pipe (71) and a clamp (72). One end of the delivery pipe (71) is threaded to the venting hole (8) and a hole is drilled in the gas extraction pipeline. The other end of the delivery pipe (71) is inserted into the hole and fixed by the clamp (72). The horizontal protective component (4) includes a pair of horizontally arranged first protective air walls (41), and each pair of first protective air walls (41) is provided with a first slider (42) on the side near the outer shell (102). The first slider (42) is slidably connected to the horizontal slide rail channel (2). The vertical protective component (5) includes a pair of vertically arranged second protective air walls (51). Each pair of second protective air walls (51) is provided with a second slider (52) on the side near the outer shell (102). The second slider (52) is slidably connected to the vertical slide rail channel (3). The upper end of the vertical slide rail channel (3) is provided with a first limiting baffle (53). The second protective air wall (51) and the first protective air wall (41) are provided with a second limiting baffle (54). The second slider (52) slides into the vertical slide rail channel (3) from top to bottom and its top end is in contact with the first limiting baffle (53). The first slider (42) slides into the horizontal slide rail channel (2) and one end is in contact with the second limiting baffle (54). The positioning device (6) includes an outer sleeve (61), a positioning cylinder (62), a start button (63), an in-situ slot (64), a positioning device (65), a reset button (66), and a retractable fixing ball (67). The top of the second protective air wall is provided with a positioning hole that matches the positioning cylinder (62). The positioning cylinder (62) is inserted into the outer sleeve (61). The start button (63) is fixedly connected to the end of the positioning cylinder (62). A reset spring (68) is sleeved on the positioning cylinder (62). A retractable fixing ball (67) is provided at the end of the positioning cylinder (62) away from the start button (63). The positioning device (65) is provided on the positioning cylinder (62). The positioning slot (610) is provided on the outer sleeve (610). The reset button (66) is vertically slidably inserted into the positioning slot (610).

2. The rapid venting and structural protection synergistic device based on a mine-use sealing gas wall as described in claim 1, characterized in that, The inner liner (101) and outer liner (102) are made of aramid fiber reinforced nitrile rubber composite material.

3. The rapid venting and structural protection synergistic device based on a mine-use sealing gas wall as described in claim 1, characterized in that, The clamp (72) is selected as DN50 type clamp (72), and the conveying pipeline (71) adopts PE hose with an inner diameter of 50mm. After the gas is released, a safety valve is installed at the borehole opened on the extraction pipeline.

4. The rapid venting and structural protection synergistic device based on a mine-use sealing gas wall as described in claim 1, characterized in that, The inner diameter of the vent hole (8) is larger than the inner diameter of the inflation hole (9).

5. The rapid venting and structural protection synergistic device based on a mine-use sealing gas wall as described in claim 1, characterized in that, The thickness of the inner liner (101) of the air wall body (1), the horizontal protection component (4), and the vertical protection component (5) is 5cm-8cm.

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