CN207048813U

CN207048813U - Sealing and leakage plugging device for gas pumping

Info

Publication number: CN207048813U
Application number: CN201721025732.1U
Authority: CN
Inventors: 谷成锡; 郭春生; 周建斌; 左胜; 郑鑫; 吕鸿明; 李丽
Original assignee: Yangquan Kehui Gas Detection Technology Co Ltd
Current assignee: Yangquan Kehui Gas Detection Technology Co Ltd
Priority date: 2017-08-16
Filing date: 2017-08-16
Publication date: 2018-02-27
Anticipated expiration: 2027-08-16

Abstract

The utility model discloses a kind of sealing for gas pumping and leakage plugging device, grouting bag I, grouting bag II and grouting bag III are sequentially fixed from outside to inside in gas pumping pipe outer wall, one end of Grouting Pipe is grouting port and the top in grouting bag I, Grouting Pipe sequentially passes through grouting bag I, its other end seals after grouting bag II and grouting bag III, the Grouting Pipe is respectively at grouting bag I, slurry outlet is equipped with pipeline in grouting bag II and grouting bag III, the pipeline that the Grouting Pipe is between grouting bag II and grouting bag III is provided with slurry pressure valve；One end of the liquid injection pipe is in the outside of grouting bag I, and the other end of liquid injection pipe is in grouting bag I and grouting bag II through grouting bag I.Quickly gas pumping repeatedly can be blocked without extras, so as to cost-effective and improve closure speed；In addition repeatedly closure using liquid closure can effective filling fracture, ensure the sealing effectiveness that repeatedly blocks.

Description

Sealing and leakage plugging device for gas pumping

Technical field

It the utility model is related to a kind of sealing for gas pumping and leakage plugging device.

Background technology

Gas pumping is that gaseous mine carries out one of necessary work before coal mining, and it leaks during yet with mash gas extraction The problem of the occurrence of gas is so as to cause extraction rate low, this production capacity that not only limit colliery also bring certain safety and asked Topic.One of the main reason for gas drainage efficiency is low is that gas hole closure quality is low；Prior art is all the side wall in stope drift active workings Setting after gas pumping hole is then placed in gas pumping pipe will be blocked between gas pumping pipe and gas pumping hole, current Method for blocking mainly includes polyurethane sealing of hole method and " a two stifled notes " method of pore sealing, and the plugging device that these methods use is completed to take out The initial stage of closure is adopted, its plugging effect is preferable, and gas pumping rate is higher, but can cause coal and rock around with the exploitation in colliery Be caving, due to above-mentioned method for blocking all be using the cement solidifies or polyurethane solidification with surrounding coal and rock seal, with coal petrography Body being caving or deforming, and due to being rigidly connected after the theing cement solidifies of plugging device between coal and rock, therefore works as the coal petrography bodily form Crack will be produced after change between plugging device and coal and rock, these cracks ultimately result in air and enter gas pumping hole from crack It is interior, and then gas pumping rate is persistently reduced.Producing the situation that gas leakage occurs for crack to above-mentioned this plugging device at present has It is effective to block mode again.

The content of the invention

In view of the above-mentioned problems of the prior art, the utility model provides a kind of sealing and leakage for gas pumping Plugging device, quickly gas pumping repeatedly can be blocked without extras, so as to it is cost-effective and improve closure speed Degree；In addition first block after multiple closure using viscous liquid closure can effective filling fracture, guarantee repeatedly block it is close Seal effect.

To achieve these goals, the technical solution adopted in the utility model is：A kind of sealing for gas pumping and Leakage plugging device, including gas pumping pipe, grouting bag I, grouting bag II, grouting bag III, Grouting Pipe and liquid injection pipe, note Pouch I, grouting bag II and grouting bag III are starched in gas pumping pipe outer wall from being fixed outside from interior order, one end of Grouting Pipe is Grouting port and the outside in grouting bag I, after Grouting Pipe sequentially passes through grouting bag I, grouting bag II and grouting bag III Its other end seals, and is all provided with the pipeline that the Grouting Pipe is respectively in grouting bag I, grouting bag II and grouting bag III There is slurry outlet, the pipeline that the Grouting Pipe is between grouting bag II and grouting bag III is provided with slurry pressure valve；It is described One end of liquid injection pipe is in the outside of grouting bag I, and the other end of liquid injection pipe is in grouting bag I and note through grouting bag I Between slurry pouch II.

Further, the Grouting Pipe and liquid injection pipe are polyvinyl chloride pipe.

Further, the grouting bag I, grouting bag II and grouting bag III are that known plastic cement material is made.

Compared with prior art, the utility model is using gas pumping pipe, grouting bag I, grouting bag II, grouting bag IIIth, the mode that Grouting Pipe and liquid injection pipe are combined, by Grouting Pipe first by grouting bag I, grouting bag II and grouting bag III Cause grouting bag I, grouting bag II and grouting bag III to first between gas pumping pipe and mash gas pumping drilling after filling up Step sealing, then by persistently injected between grouting bag II and grouting bag III sealing of hole slurries and solidify after, one can be played The effect of secondary closure；Then in the case of gas leakage occurring such as plugging device during the gas pumping, the now sky of stope Gas will be entered in gas pumping hole by crack, and the gas for causing to extract out out of gas pumping hole is mixed with the air of entrance, drop The gas density that low extraction goes out, viscous liquid is then injected between grouting bag I and grouting bag II by liquid injection pipe, passed through Negative pressure is produced in the lasting mash gas extraction drainage holes of drainage tube, and then atmospheric pressure can promote crack caused by viscous liquid entrance, Secondary plugging is carried out, the final air for completely cutting off stope enters in gas pumping hole；Because viscous liquid can be prolonged Not curdled appearance is kept, therefore as gas leakage situation subsequently occurs again, viscous liquid can be re-injected and blocked again.This practicality It is new that quickly gas pumping repeatedly can be blocked without extras, so as to cost-effective and improve closure speed；Separately Outside first block after multiple closure using viscous liquid closure can effective filling fracture, ensure repeatedly block sealing effect Fruit.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the schematic diagram of the utility model implementation process.

In figure：1st, grouting port, 2, liquid injection pipe, 3, grouting bag I, 4, gas pumping pipe, 5, Grouting Pipe, 6, slurry outlet, 7, Grouting bag II, 8, slurry pressure valve, 9, grouting bag III, 10, gas pumping hole.

Embodiment

The utility model is described in further detail below.

Using the left in Fig. 1 as outside, right is described for inner side：As shown in Figure 1 to Figure 2, it is a kind of to be taken out for gas The sealing adopted and leakage plugging device, including gas pumping pipe 4, grouting bag I 3, grouting bag II 7, grouting bag III 9, note Pipe 5 and liquid injection pipe 2 are starched, grouting bag I 3, grouting bag II 7 and grouting bag III 9 are in the outer wall of gas pumping pipe 4 from outside from interior suitable Sequence is fixed, and one end of Grouting Pipe 5 for grouting port 1 and is in the outside of grouting bag I 3, and Grouting Pipe 5 sequentially passes through grouting bag I 3rd, its other end seals after grouting bag II 7 and grouting bag III 9, and the Grouting Pipe 5 is respectively at grouting bag I 3, slip casting bag Slurry outlet 6 is equipped with pipeline in bag II 7 and grouting bag III 9, the Grouting Pipe 5 is in grouting bag II 7 and slip casting bag Pipeline between bag III 9 is provided with slurry pressure valve 8；One end of the liquid injection pipe 2 is in the outside of grouting bag I 3, liquid injection pipe 2 other end is in grouting bag I 3 and grouting bag II 7 through grouting bag I 3.

Further, the Grouting Pipe 5 and liquid injection pipe 2 are polyvinyl chloride pipe.

Further, the grouting bag I 3, grouting bag II 7 and grouting bag III 9 are that known plastic cement material is made.

Specific works method of the present utility model is：

A, mash gas pumping drilling is carried out after the wall chosen position of stope；

B, plugging device is put into the gas pumping hole 10 being drilled to；

C, sealing of hole slurries are injected into Grouting Pipe 5 by grouting port 1, sealing of hole slurries are respectively by slurry outlet 6 to slip casting bag Filled in bag I 3, grouting bag II 7 and grouting bag III 9, until grouting bag I 3, grouting bag II 7 and grouting bag III 9 hole wall respectively with gas pumping hole 10 compresses sealing；Formed and held so between grouting bag II 7 and grouting bag III 9 Receive chamber, when being easy to be subsequently implanted into sealing of hole slurries sealing of hole slurries can be made to stablize relatively in accommodating chamber and solidified, prevent it to underground Flowing causes the plugging effect after sealing of hole grout cures；

D, sealing of hole slurries are persistently injected in Grouting Pipe 5, when the pressure in Grouting Pipe 5 is more than the unlatching pressure of slurry pressure valve 8 During power, sealing of hole slurries are entered between grouting bag II 7, grouting bag III 9 and gas pumping hole 10 by slurry pressure valve 8 to be formed Accommodating chamber, until Grouting Pipe 5 fills stoppings, the once closure in completion gas pumping hole 10 after sealing of hole grout cures；Slurry Hydraulic coupling valve 8 act as first making sealing of hole slurries now to be noted full of after grouting bag I 3, grouting bag II 7 and grouting bag III 9 In slurry pipe 5 there is certain pressure rear slurry pressure valve 8 to open, then sealing of hole slurries start to grouting bag II 7 and slip casting bag again Filled between bag III 9, so due to forming accommodating chamber sealing of hole slurries are relatively fixed, consequently facilitating the envelope after solidification It is stifled；The sealing of hole slurries are existing mining sealing material；

If E, gas extraction concentration persistently reduces during gas pumping, between gas pumping pipe 4 and coal and rock Gas leakage situation occurs for closure, now by liquid injection pipe 2 to shape between grouting bag I 3, grouting bag II 7 and gas pumping hole 10 Into accommodating chamber in inject viscous liquid, while gas pumping pipe 4 persistently carries out extraction and caused inside gas pumping hole in negative Pressure condition, after viscous liquid is entered coal and rock and once blocked by atmospheric pressure effect in caused crack, viscous liquid is persistently noted Enter and stop after the gas density rise of extraction in gas pumping pipe 4 and block the port of liquid injection pipe 2, complete gas pumping Secondary plugging；The viscous liquid is the existing macromolecule viscosity sealing agent with not coagulating property；

F, gas leakage situation occurs again for such as gas pumping hole, and repeat step E is blocked again to the crack that gas leakage occurs.

Claims

1. a kind of sealing and leakage plugging device for gas pumping, including gas pumping pipe (4), it is characterised in that also wrap Include grouting bag I (3), grouting bag II (7), grouting bag III (9), Grouting Pipe (5) and liquid injection pipe (2), grouting bag I (3), Grouting bag II (7) and grouting bag III (9) in gas pumping pipe (4) outer wall from being fixed outside from interior order, the one of Grouting Pipe (5) Hold as grouting port (1) and the outside in grouting bag I (3), Grouting Pipe (5) sequentially pass through grouting bag I (3), grouting bag Its other end seals afterwards for II (7) and grouting bag III (9), and the Grouting Pipe (5) is respectively at grouting bag I (3), grouting bag Slurry outlet (6) is equipped with pipeline in II (7) and grouting bag III (9), the Grouting Pipe (5) is in grouting bag II (7) Pipeline between grouting bag III (9) is provided with slurry pressure valve (8)；One end of the liquid injection pipe (2) is in grouting bag I (3) outside, the other end of liquid injection pipe (2) through grouting bag I (3) be in grouting bag I (3) and grouting bag II (7) it Between.

2. the sealing and leakage plugging device according to claim 1 for gas pumping, it is characterised in that the slip casting It is polyvinyl chloride pipe to manage (5) and liquid injection pipe (2).

3. the sealing and leakage plugging device according to claim 1 for gas pumping, it is characterised in that the slip casting Pouch I (3), grouting bag II (7) and grouting bag III (9) are that known plastic cement material is made.