CN204827335U

CN204827335U - Self -expanding hole packer

Info

Publication number: CN204827335U
Application number: CN201520405625.6U
Authority: CN
Inventors: 田晓健
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-14
Filing date: 2015-06-14
Publication date: 2015-12-02
Anticipated expiration: 2025-06-14

Abstract

The utility model discloses a solve present colliery when gas drainage drilling slip casting hole sealing, not only technology is complicated, workman intensity of labour is big, need consume a large amount of thick liquids in addition, thick liquids solidify the back, the crack that the change produced to the earth pressure will lose the problem of sealed effect, provide a self -expanding hole packer, a self -expanding hole packer, including certainly the expand sponge of cover on gas drainage pipe, expand sponge shrink back certainly with the free accommodation of aluminium membrane, gas drainage drilling in the in -service use, is put into with self -expanding gas hole packer to the pre -buried lead wire of tearing in the aluminium membrane, pulls open and tears the lead wire, the sponge of expanding the certainly hole sealing of expanding rapidly reaches the quick hole sealing of labour saving and time saving, moreover simple structure, use simple and convenient, the cost is lower, through practice has proved, the hole sealing is effectual, is applicable to the hole sealing that colliery gas drainage drilld.

Description

Self-expanding hole packer

Technical field

The utility model relates to a kind of hole packer, specifically a kind of self-expanding hole packer of coal mine gas extraction borehole.

Background technology

In coal mine gas drainage process, the sealing of hole of mash gas pumping drilling is carry out sealing of hole with slip casting, complex process during slip casting always, labor strength is large, and needs to consume a large amount of slurry, after slurry solidifies, the crack that pressure variation produces over the ground will lose sealing function, can have a strong impact on gas pumping effect.

Summary of the invention

The utility model is in order to solve existing colliery when mash gas pumping drilling injection hole sealing, complex process, and labor strength is large, and need to consume a large amount of slurry, after slurry solidifies, the crack that pressure variation produces over the ground will lose the problem of sealing function, provide a kind of Self-expansion type gas hole packer.

For solving above technical problem, the technical solution adopted in the utility model is:

A kind of Self-expansion type gas hole packer, comprise be enclosed within gas pumping pipe have flame-retardant and anti-static performance from swollen sponge, it is characterized in that: from swollen sponge vacuum constriction to when being less than gas pumping bore dia, wrapped with aluminium film, pre-buriedly on aluminium film tear lead-in wire, diameter after swollen sponge distending is more than 1.5 times of mash gas pumping drilling diameter, self-expanding hole packer length can according to field demand, socket lengthens, during sealing of hole, Self-expansion type gas hole packer is put into mash gas pumping drilling, pull open and tear lead-in wire, from swollen sponge energy undergoes rapid expansion, be adjacent to hole wall, seal mash gas pumping drilling.

Complex process when Self-expansion type gas hole packer described in the utility model solves injection hole sealing, labor strength is large, and need to consume a large amount of slurry, after slurry solidifies, the crack that pressure variation produces over the ground loses the problem of sealing function, and structure is simple, easy to use, cost is lower, is proven, sealing of hole is effective, is applicable to the sealing of hole of coal mine gas extraction drill hole.

Accompanying drawing explanation

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

In figure, 1-gas pumping pipe, 2-is from swollen sponge, and 3-aluminium film, 4-tears lead-in wire.

Detailed description of the invention

In order to make those skilled in the art better understand the utility model, below in conjunction with accompanying drawing, explanation clear, complete is further done to the utility model.

A kind of Self-expansion type gas hole packer shown in Fig. 1, comprise be enclosed within gas pumping pipe 1 have flame-retardant and anti-static performance from swollen sponge 2, encase with aluminium film 3 after swollen sponge vacuum constriction, be embedded with in aluminium film 3 and tear lead-in wire 4.

In actual use, Self-expansion type gas hole packer is put into mash gas pumping drilling, sealed borehole length can adjust according to field requirement, as length can extend not in adjunction, during sealing of hole, pull open and tear lead-in wire 4, from swollen sponge 2 undergoes rapid expansion sealing of hole, because of more than 1.5 times that the diameter after swollen sponge 2 distending is mash gas pumping drilling diameter, so have pressure to act on hole wall all the time from swollen sponge, reach time saving and energy saving rapid hole sealing.

The claimed scope of the utility model is not limited to above detailed description of the invention; to those skilled in the art; the utility model can have various deformation and change, all in design of the present utility model and any amendment, the improvement done within principle be equal to replacement and all should be included within protection domain of the present utility model.

Claims

1. a self-expanding hole packer, comprise be enclosed within gas pumping pipe (1) have the performance of flame-retardant and anti-static from swollen sponge (2), it is characterized in that: from swollen sponge (2) vacuum constriction to when being less than gas pumping bore dia, wrapped with aluminium film (3), pre-buriedly on aluminium film torn lead-in wire (4).