CN103742104B

CN103742104B - Hole packer

Info

Publication number: CN103742104B
Application number: CN201410005514.6A
Authority: CN
Inventors: 贺昌雨
Original assignee: HUINAN TECHNOLOGY VENTURE CO LTD
Current assignee: HUINAN TECHNOLOGY VENTURE CO LTD
Priority date: 2014-01-06
Filing date: 2014-01-06
Publication date: 2017-01-25
Anticipated expiration: 2034-01-06
Also published as: CN103742104A

Abstract

The invention discloses a hole packer. The hole packer comprises an oil pump drainage pipeline, wherein a grouting channel is formed outside a pipe wall of the pump drainage pipeline; rubber expansion bags are arranged at two ends of the pump drainage pipeline; the grouting channel is respectively communicated with the rubber expansion bags; a grout outlet is formed in the grouting channel and communicated with outside of the pipe wall of the pump drainage pipeline; three pistons are arranged in the grouting channel; a first piston and a second piston are respectively used for forming a material storage cavity with a sealing membrane; the grout outlet is blocked by a third piston; the material storage cavity is separated into two areas by the sealing membrane; foaming materials are arranged in two areas of the material storage cavity respectively; when the grout is injected into the grouting channel, the rubber expansion bags at two ends expand firstly, then a coal hole is blocked; then the grout overflows out of the grout outlet and flows to a coal hole wall, so that joints of the coal hole wall are filled, the grout is prevented from flowing to the hole bottom, thereby ensuring effectively hole sealing.

Description

A kind of hole packer

Technical field

The present invention relates to a kind of gas pumping technology, particularly to a kind of hole packer.

Background technology

Domestic mine has been carried out the research and experiment of drilling and sealing aspect at present, but still there is sealing quality difference and become This high problem.Due to the reason such as crack around boring, there is small gas leakage in most borings, hole pumping and mining gas density cannot It is improved, under long-time negative pressure extraction, outer air of holing enters coal body through lane side crack and borehole fissure and forms micro- oxygen supply, Coal body may be led to occur spontaneous combustion to result in greater loss.In addition, being continuously increased with the depth of excavation, under high-ground stress and loose In soft seam, the extraction borehole of construction occurs collapse hole phenomenon quickly, hinders gas channel, substantially reduces extraction amount, drilling construction Effective length is can be utilized to shorten afterwards.

Content of the invention

The technical problem to be solved is to provide a kind of hole packer being capable of effective sealing of hole.

For achieving the above object, the present invention provides a kind of following technical scheme: hole packer, including evacuation duct, pump drainage Slip casting passage is set outside the tube wall of pipeline, and slip casting passage is parallel with evacuation duct, and the two ends of evacuation duct are respectively provided with swelling bag, Slip casting passage is respectively provided with first passage and second channel, and first passage is communicated to the first swelling bag, and second channel is communicated to Two swelling bags, position setting grout outlet between the first swelling bag and the second swelling bag for the slip casting passage is communicated to slip casting passage Outside tube wall, three pistons of setting in slip casting passage, wherein first piston are located in first passage, and described first passage is near the Setting sealing barrier film at one swelling bag, the 3rd piston is fixed on the junction of slip casting passage and grout outlet, and the closure of the 3rd piston Grout outlet, the 3rd piston setting through hole, through hole is parallel with slip casting passage, and second channel is in setting sealing at the second swelling bag Barrier film, second piston is arranged in the slip casting passage between the 3rd piston and first piston, first piston with sealing barrier film group Become material storage chamber, second piston forms another material storage chamber with sealing barrier film, two material storage chambeies, point Be not separated into two regions by sealing barrier film, two material storage chambeies, two regions in place foaming material respectively Material, two material storage chambeies, length consistent.

Using technique scheme, when carrying out sealing of hole, after to injecting slurry in slip casting passage, two ends swelling bag is first Expand, coal hole is blocked, then slurry overflows from grout outlet, flow to coal hole wall, fill coal hole wall gap, it is to avoid pulp flow To bottom hole, thus ensureing effective sealing of hole.

Brief description

Fig. 1 is present configuration schematic diagram；

Fig. 2 is the structural representation of the present invention the 3rd piston.

Wherein, 1. evacuation duct 2. slip casting passage 3. first swelling bag 4. second swelling bag 5. grout outlet 6. first Piston 7. first passage 8. sealing barrier film 9. the 3rd piston 10. through hole, 11. second channel 12. sealing barrier film 13. Material storage chamber 14. second piston, 15. material storage chamber 16. seals barrier film 17. coal hole.

Specific embodiment

Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described:

Fig. 1 is the structural representation of the present invention, as shown in figure 1, a kind of hole packer of the present invention, including evacuation duct 1, described Slip casting passage 2 is set outside the tube wall of evacuation duct 1, and slip casting passage 2 is parallel with evacuation duct 1, the two ends of evacuation duct 1 are solid respectively Determine swelling bag, slip casting passage 2 is drilled with first passage 7 and second channel 11 respectively, wherein first passage 7 is communicated to the first swelling bag 3, second channel 11 is connected with the second rubber swelling capsule 4, position between the first swelling bag 3 and the second swelling bag 4 for the slip casting passage 2 Install grout outlet 5 to be communicated to outside the tube wall of slip casting passage 2, three pistons of setting, wherein first piston 6 in slip casting passage 2 In first passage 7, first passage 7 is fixed on slip casting in setting sealing barrier film 8 at the first swelling bag 3, the 3rd piston 9 Passage 2 and the junction of grout outlet 5, and the 3rd piston 9 closure grout outlet 5, the 3rd piston 9 arranges through hole 10, through hole 10 and note Slurry passage 2 is parallel, and described second channel 11 is arranged in setting sealing barrier film 12 at the second swelling bag 4, second piston 14 In the slip casting passage 2 between the 3rd piston 9 and first piston 6, first piston 6 and sealing barrier film 8 component material reservoir 13, second piston 14 and sealing barrier film 12 component material reservoir 15, described material storage chamber, 13,15 lead to respectively Overstocked packing film 16 is separated into two regions, places expanded material respectively in material storage chamber, 13,15 two regions, Material storage chamber, 13,15 length consistent.

Described first piston 6 can slide along passage 7, and second piston 14 is slided along slip casting passage 2, and the 3rd piston 9 is along logical Road 11 slides.3rd piston 9 is fixed at grout outlet 5, but disconnected when the 3rd piston 9 is subject to the compression shock of second piston 14 Open the connection with grout outlet 5, slide with second piston 14, release the closure to grout outlet 5, for example, can be incited somebody to action using glue 3rd piston 9 is pasted onto at grout outlet 5.

Using technique scheme, when carrying out sealing of hole, after to injecting slurry in slip casting passage 2, in slip casting passage 2 Pressure continues to increase, first piston 6 and second piston 14 forward slip under the effect of the pressure, and breaks through sealing barrier film respectively 16, make two material storage chambeies, break through sealing barrier film 8 respectively after the foaming agent hybrid reaction in 13,15 interior two regions With sealing barrier film 12, and flow in the first swelling bag 3 and the second swelling bag 4, make the first swelling bag 3 and the second swelling bag 4 swollen Swollen closure coal hole, simultaneously second piston 14 continue to move ahead and clash into the 3rd piston 9, the 3rd piston 9 departs from and the company of grout outlet 5 Connect, slide at the second swelling bag 4 together with second piston 14, seal the second swelling bag 4, in the same manner, first piston 6 sealing first Swelling bag 3.Meanwhile, slurry flows out evacuation duct 1 at grout outlet 5, flows at coal hole wall gap, due to flowing out pump drainage in slip Before pipeline 1, the swelling bag 3,4 at two ends is blocked to coal hole, thus avoiding slip to flow to bottom hole it is ensured that effectively Sealing of hole.

Above-described is only the preferred embodiment of the present invention it is noted that for those of ordinary skill in the art For, without departing from the concept of the premise of the invention, some deformation can also be made and improve, these broadly fall into the present invention Protection domain.

Claims

1. a kind of hole packer, including evacuation duct (1), setting slip casting passage (2), slip casting outside the tube wall of described evacuation duct (1) Passage (2) is parallel with evacuation duct (1), and the two ends of evacuation duct (1) are respectively provided with swelling bag, and described slip casting passage (2) is respectively Setting first passage (7) and second channel (11), first passage (7) is communicated to the first swelling bag (3), and second channel (11) connects To the second swelling bag (4), setting grout outlet in position between the first swelling bag (3) and the second swelling bag (4) for the slip casting passage (2) (5) tube wall being communicated to slip casting passage (2) outer it is characterised in that: three pistons of setting in described slip casting passage (2), wherein the One piston (6) is located in first passage (7), and described first passage (7) is near the first swelling bag (3) place setting sealing barrier film (8), the 3rd piston (9) is fixed on the junction of slip casting passage (2) and grout outlet (5), and the 3rd piston (9) closure grout outlet (5), described 3rd piston (9) setting through hole (10), through hole (10) is parallel with slip casting passage (2), and described second channel (11) exists Near the second swelling bag (4) place setting sealing barrier film (12), second piston (14) is arranged on the 3rd piston (9) and first piston (6) in slip casting passage (2) between, first piston (6) and sealing barrier film (8) component material reservoir (13), second piston (14) with sealing barrier film (12) component material reservoir (15), described material storage chamber, (13,15) are passed through respectively Sealing barrier film (16) is separated into two regions, places foaming material respectively in material storage chamber, two regions of (13,15) Material, described material storage chamber, (13,15) length consistent.