CN203655223U

CN203655223U - Hole packer

Info

Publication number: CN203655223U
Application number: CN201420007343.6U
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: 2014-06-18
Anticipated expiration: 2024-01-06

Abstract

The utility model discloses a hole packer which comprises an extraction pipe. A slurry injection channel is arranged in the pipe wall of the extraction pipe, rubber expansion bags are arranged at two ends of the extraction channel, the slurry injection channel is communicated with the rubber expansion bags, a slurry outlet is arranged in the slurry injection channel and communicated with the outside of the pipe wall of the extraction channel, three pistons are arranged in the slurry injection channel, a first piston and a second piston and a sealing diaphragm form a material storage cavity, a third piston blocks the slurry outlet, the material storage cavity is separated into two areas through the sealing diaphragm, and foaming materials are arranged in two areas of the material storage cavities. After slurry is injected into the slurry injection channel, the rubber expansion bags at the two ends expand first to block coal holes, then the slurry is overflowed from the slurry outlet and flow to the coal hole wall to fill gaps in the coal hole wall, the slurry is prevented from flowing to the hole bottom, and the hole packing is effectively ensured.

Description

A kind of hole packer

Technical field

The utility model relates to a kind of gas pumping technology, particularly a kind of hole packer.

Background technology

Current domestic mine has carried out the research and experiment of drilling and sealing aspect, but still has the problem that sealing quality is poor and cost is high.Due to reasons such as cracks around boring, there is small gas leakage in most boring, hole pumping and mining gas density cannot be improved, under long-time negative pressure extraction, boring outer air enters coal body and forms micro-oxygen supply through lane side crack and boring crack, may cause coal body generation spontaneous combustion and results in greater loss.In addition, with the continuous increase of the depth of excavation, the extraction borehole of constructing under high-ground stress and in weak seam there will be collapse hole phenomenon very soon, hinders gas channel, greatly reduces extraction amount, can utilize effective length to shorten after drilling construction.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of effectively hole packer of sealing of hole.

For achieving the above object, the utility model provides following technical scheme: a kind of hole packer, comprise pump drainage pipeline, the tube wall of pump drainage pipeline arranges slip casting passage outward, slip casting passage is parallel with pump drainage pipeline, the two ends of pump drainage pipeline arrange respectively swelling bag, slip casting passage arranges respectively first passage and second channel, first passage is connected to the first swelling bag, second channel is connected to the second swelling bag, the position of slip casting passage between the first swelling bag and the second swelling bag arranges outside the tube wall that grout outlet is communicated to slip casting passage, three pistons are set in slip casting passage, wherein first piston is positioned at first passage, described first passage is arranging seal dissepiment near the first swelling bag place, the 3rd piston is slightly fixed on the junction of slip casting passage and grout outlet, and the 3rd piston shutoff grout outlet, the 3rd piston arranges through hole, through hole and slip casting channel parallel, second channel is arranging seal dissepiment near the second swelling bag place, the second piston is arranged in the slip casting passage between the 3rd piston and first piston, first piston and seal dissepiment component material reservoir, the second piston and seal dissepiment form another material reservoir, two material reservoir are separated into two regions by seal dissepiment respectively, in two regions of two material reservoir, place respectively expanded material, the length of two material reservoir is consistent.

Adopt technique scheme, in the time carrying out sealing of hole, when after injecting slurry in slip casting passage, first two ends swelling bag expands, shutoff is carried out in coal hole, and then slurry overflows from grout outlet, flows to coal hole wall, fill coal hole wall gap, avoid pulp flow at the bottom of hole, thereby ensure effective sealing of hole.

Brief description of the drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of the utility model the 3rd piston.

Wherein, 1. pump drainage pipeline 2. slip casting passage 3. first swelling bag 4. second swelling bag 5. grout outlet 6. first piston 7. first passage 8. seal dissepiments 9. the 3rd piston 10. through hole 11. second channel 12. seal dissepiment 13. material reservoir 14. second piston 15. material reservoir 16. seal dissepiment 17. coal holes.

Detailed description of the invention

Below in conjunction with accompanying drawing, by the description to embodiment, the utility model is described further:

Fig. 1 is structural representation of the present utility model, as shown in Figure 1, a kind of hole packer of the utility model, comprise pump drainage pipeline 1, slip casting passage 2 is set in the tube wall of described pump drainage pipeline 1, slip casting passage 2 is parallel with pump drainage pipeline 1, the two ends of pump drainage pipeline 1 are fixed expansion capsule respectively, slip casting passage 2 is drilled with respectively first passage 7 and second channel 11, wherein first passage 7 is connected to the first swelling bag 3, second channel 11 and the second rubber swelling capsule 4 UNICOMs, the position of slip casting passage 2 between the first swelling bag 3 and the second swelling bag 4 arranges outside the tube wall that grout outlet 5 is communicated to slip casting passage 2, slip casting passage 2 is interior arranges three pistons, wherein first piston 6 is positioned at first passage 7, first passage 7 is arranging seal dissepiment 8 near the first swelling bag 3 places, the 3rd piston 9 is slightly fixed on the junction of slip casting passage 2 and grout outlet 5, and the 3rd piston 9 shutoff grout outlets 5, the 3rd piston 9 arranges through hole 10, through hole 10 is parallel with slip casting passage 2, described second channel 11 is arranging seal dissepiment 12 near the second swelling bag 4 places, the second piston 14 is arranged in the slip casting passage 2 between the 3rd piston 9 and first piston 6, first piston 6 and seal dissepiment 8 component material reservoir 13, the second piston 14 and seal dissepiment 12 component material reservoir 15, described

material reservoir

13, 15 are separated into two regions by seal dissepiment 16 respectively, material reservoir 13, in two regions of 15, place respectively expanded material,

material reservoir

13, 15 length is consistent.

Described first piston 6 can slide along passage 7, and the second piston 14 slides along slip casting passage 2, and the 3rd piston 9 slides along passage 11.Slightly fixedly refer to the 3rd piston 9 is fixed on grout outlet 5 places to the 3rd piston 9, but in the time that being subject to the compression shock of the second piston 14, the 3rd piston 9 disconnects and being connected of grout outlet 5, slide with the second piston 14, remove the shutoff to grout outlet 5, for example, can adopt glue that the 3rd piston 9 is sticked on to grout outlet 5 places.

Adopt technique scheme, in the time carrying out sealing of hole, when after the interior injecting slurry of slip casting passage 2, pressure in slip casting passage 2 continues to increase, first piston 6 and the second piston 14 under the effect of pressure to front slide, and break through respectively seal dissepiment 16, make two material reservoir 13, after blowing agent hybrid reaction in 15 interior two regions, break through respectively seal dissepiment 8 and seal dissepiment 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 expansion plugging coal holes, while the second piston 14 continues to move ahead and clashes into the 3rd piston 9, the 3rd piston 9 disengagings are connected with grout outlet 5, slide to the second swelling bag 4 places together with the second piston 14, seal the second swelling bag 4, in like manner, first piston 6 seals the first swelling bag 3.Meanwhile, slurry flows out pump drainage pipelines 1 from grout outlet 5, flows to coal hole wall gap place, and due to before slip flows out exhaust pipe road 1, the swelling bag 3,4 at two ends has carried out shutoff to coal hole, thereby has avoided pulp flow at the bottom of hole, has ensured effective sealing of hole.

Above-described is only preferred embodiment of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a hole packer, comprise pump drainage pipeline (1), the tube wall of described pump drainage pipeline (1) arranges slip casting passage (2) outward, slip casting passage (2) is parallel with pump drainage pipeline (1), the two ends of pump drainage pipeline (1) arrange respectively swelling bag, described slip casting passage (2) arranges respectively first passage (7) and second channel (11), first passage (7) is connected to the first swelling bag (3), second channel (11) is connected to the second swelling bag (4), the position of slip casting passage (2) between the first swelling bag (3) and the second swelling bag (4) arranges grout outlet (5) and is communicated to outside the tube wall of slip casting passage (2), it is characterized in that: three pistons are set in described slip casting passage (2), wherein first piston (6) is positioned at first passage (7), described first passage (7) is locating to arrange seal dissepiment (8) near the first swelling bag (3), the 3rd piston (9) is slightly fixed on the junction of slip casting passage (2) and grout outlet (5), and the 3rd piston (9) shutoff grout outlet (5), described the 3rd piston (9) arranges through hole (10), through hole (10) is parallel with slip casting passage (2), described second channel (11) is locating to arrange seal dissepiment (12) near the second swelling bag (4), the second piston (14) is arranged in the slip casting passage (2) between the 3rd piston (9) and first piston (6), first piston (6) and seal dissepiment (8) component material reservoir (13), the second piston (14) and seal dissepiment (12) component material reservoir (15), described material reservoir (13, 15) be separated into two regions by seal dissepiment (16) respectively, material reservoir (13, 15) in two regions, place respectively expanded material, described material reservoir (13, 15) length is consistent.