CN209838362U

CN209838362U - Deep hole water injection hole packer

Info

Publication number: CN209838362U
Application number: CN201821995133.7U
Authority: CN
Inventors: 杨威; 路长征; 林明华
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2019-12-24
Anticipated expiration: 2028-11-29

Abstract

The utility model provides a deep hole water injection hole packer, including outer rubber tube, drilling water injection pipe and capsule water injection pipe, the both ends of outer rubber tube are fixed on the capsule end cap, the outer rubber tube constitutes the closed cavity with the capsule end cap at both ends, the both ends of drilling water injection pipe pass two capsule end caps respectively and fix respectively on two capsule end caps, the part that drilling water injection pipe is located the closed cavity has one section to be scalable pipe, the part that drilling water injection pipe both ends are close to two capsule end caps is hard pipe, the capsule water injection pipe is located one of them capsule end cap, the one end of capsule water injection pipe stretches into in the closed cavity. The utility model discloses a deep hole water injection hole packer, the middle section of drilling water injection pipe in the hole packer is the hose, changes bending deformation, makes the hole packer can adapt to various drilling; the part of the drilling water injection pipe close to the rubber pipe plug is directly welded with the rubber pipe plug, the processing is convenient, the water leakage point is reduced, the sealing performance during high-pressure water injection is ensured, and the performance is more stable.

Description

Deep hole water injection hole packer

Technical Field

The utility model relates to a mining equipment especially relates to a deep hole water injection hole packer.

Background

Accidents such as gas ejection, coal and gas outburst, gas explosion and the like occur frequently in China. The technologies of coal seam water injection, loosening blasting, coal seam hydraulic fracturing and the like are effective means for preventing and controlling gas disasters. Effective hole sealing is the primary condition for realizing high-efficiency water injection, safe loose blasting and high-efficiency hydraulic fracturing. The conventional hole drilling and sealing method can adopt a rubber tube hole sealing device to seal holes besides adopting cement mortar, yellow mud and the like to seal holes. The conventional coal seam water injection rubber pipe hole packer is divided into two types: one is that the pressure-bearing check valve is installed inside the rubber tube to realize coal seam water injection, and this receives the restriction of coal seam water injection pressure, and the inside pressure of rubber tube is generally not high, and the pressure-bearing check valve precision is unsatisfactory in addition, and this all leads to the hole sealing effect unsatisfactory. Particularly, when the rubber tube is used for plugging a blast hole, if the internal pressure of the rubber tube is insufficient, the rubber tube is easily thrown out at the moment of blasting. The other is that a sealing slideway is arranged at one end of the rubber tube to adapt to the length contraction of the rubber tube after the rubber tube is inflated by water injection, so that the rubber tube is prevented from being damaged by the inner pipeline. Because the sealing effect of the sealing slideway is not ideal, water is easy to leak under high pressure and is easy to damage; in addition, because the pipelines inside the rubber tube are generally hard pipelines, the contractibility is poor, and the rubber tube is easily damaged in the water injection process after the sealing slide way is damaged.

Disclosure of Invention

An object of the utility model is to provide a middle part telescopic deep hole water injection hole sealing device is fixed at both ends.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a deep hole water injection hole packer, including outer rubber tube, drilling water injection pipe and capsule water injection pipe, the both ends of outer rubber tube are fixed on the capsule end cap, the outer rubber tube constitutes the closed cavity with the capsule end cap at both ends, the both ends of drilling water injection pipe pass two capsule end caps respectively and fix respectively on two capsule end caps, the part that drilling water injection pipe is located the closed cavity has one section to be scalable pipe, the part that drilling water injection pipe both ends are close to two capsule end caps is hard pipe, the capsule water injection pipe is located one of them capsule end cap, the one end of capsule water injection pipe stretches into in the closed cavity.

As a further improved technical scheme of the utility model, the hard pipe is welded on the capsule plug.

As a further improved technical scheme of the utility model, the hard pipe with the capsule end cap is the metal.

As a further improved technical proposal of the utility model, the metal is iron, stainless steel or aluminum alloy.

As a further improved technical scheme of the utility model, the hard tube with the capsule end cap is rigid plastic.

As a further improved technical proposal of the utility model, the telescopic pipe is a hose.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a deep hole water injection hole packer, drilling water injection pipe divide into three-section in the hole packer, and the middle section is the hose, and adaptable rubber tube shrinkage deformation, compared with current tubular metal resonator, its weight is lighter, also bending deformation more easily for whole hole packer can bend adaptable drilling of various shapes;

2. the utility model discloses a deep hole water injection hole packer, when the assembly, the part that the drilling water injection pipe is close to the rubber tube end cap is directly welded together with the rubber tube end cap, has reduced the water leakage point, has ensured the leakproofness when high-pressure water injection, and has saved traditional sealed slide, has overcome the easy damaged defect of slide, and the performance is more stable, more is applicable to the hole sealing operation of blasting drilling and water injection drilling;

3. the utility model discloses a deep hole water injection hole packer, the inside hose that is of hole packer has alleviateed weight greatly, has reduced hole packer's weight by a wide margin to reduce the hole sealing part, processing is convenient.

Drawings

Fig. 1 is an external contour diagram of a deep hole water injection hole packer in an embodiment of the present invention;

fig. 2 is a sectional view of a deep hole water injection hole packer in an embodiment of the present invention;

in FIGS. 1-2: 1. the rubber tube comprises an outer rubber tube 2, a rubber tube plug 3, a rubber tube plug 4, a drilling water injection tube 5, a hose 6, a hard tube 7, a hard tube 8, a welding part 9, a welding part 10 and a capsule water injection tube.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

Examples

As shown in fig. 1 and 2, the deep hole water injection hole packer comprises an outer rubber pipe 1, a drilling water injection pipe 4 and a capsule water injection pipe 10. The outer rubber tube 1 can expand when bearing pressure inside, two ends of the outer rubber tube 1 are respectively fixed on the capsule plugs (2, 3), and the outer rubber tube 1 and the capsule plugs (2, 3) at the two ends form a closed cavity. Two ends of the drilling water injection pipe 4 respectively penetrate through the two capsule plugs (2 and 3) and are respectively fixed on the two capsule plugs (2 and 3). The part of the drilling water injection pipe 1 in the closed cavity is provided with a section of flexible pipe 5 which is telescopic, the parts of the two ends of the drilling water injection pipe 4 close to the two capsule plugs (2 and 3) are hard pipes (6 and 7), the capsule water injection pipe 10 is positioned on one of the capsule plugs, and one end of the capsule water injection pipe 10 extends into the closed cavity. The rubber pipe plugs (2, 3) and the hard pipes (6, 7) can be made of metal materials such as steel, stainless steel, aluminum alloy and the like, and can also be made of hard plastics.

During assembly, the drilling water injection pipe 4 penetrates through the outer rubber pipe 1, the hard pipes (6 and 7) at two ends of the drilling water injection pipe 4 respectively penetrate through the rubber pipe plugs (2 and 3), the hose 5 is located inside the outer rubber pipe 1, then the hard pipes (6 and 7) and the rubber pipe plugs (2 and 3) are respectively welded, and the welding position 8 and the welding position 9 can enable the whole hole packer to have good sealing performance under the condition of guaranteeing the sealing effect. In the design process of a conventional similar hole packer, a hard metal pipeline is generally adopted in the hole packer, and the length of the hole packer can be contracted when water is injected into the hole packer to expand, so that an inner metal pipe can be contracted, the inner metal pipe is generally realized by connecting a telescopic slideway in series, the telescopic slideway is generally arranged at the position of a rubber pipe plug, only one end of the inner pipe is welded with the rubber pipe plug, and the other end of the inner pipe slides in a sealing manner. The slide way needs to be connected in a sealing mode, water leakage cannot happen when high-pressure water is injected, and the slide way is easy to damage after long-time use, so that the whole hole packer is damaged. The utility model discloses an it is hose 5 that deep hole water injection hole packer is inside, can warp along with hole packer's flexible, consequently its inside slide that does not need to install, the rubber tube end cap (2, 3) direct welding at the both ends of drilling water injection pipe 4 and 1 both ends of outer rubber tube, processing is convenient and has reduced the water leakage point, has improved sealed effect greatly, is applicable to very much the hole sealing operation of blasting drilling and water injection drilling. In addition, the weight of the hose 5 is light, and the overall weight of the hole packer is greatly reduced.

Claims

1. A deep hole water injection hole packer is characterized by comprising an outer rubber pipe, a drilling water injection pipe and a capsule water injection pipe, wherein two ends of the outer rubber pipe are fixed on capsule plugs, the outer rubber pipe and the capsule plugs at the two ends form a closed cavity, two ends of the drilling water injection pipe respectively penetrate through the two capsule plugs and are respectively fixed on the two capsule plugs, one section of the drilling water injection pipe in the closed cavity is a telescopic pipe, the parts of the two ends of the drilling water injection pipe close to the two capsule plugs are hard pipes, the capsule water injection pipe is positioned on one of the capsule plugs, and one end of the capsule water injection pipe extends into the closed cavity; the hard tube is welded on the capsule plug; the hard tube and the capsule plug are both made of metal.

2. A deep-hole water injection hole packer according to claim 1, wherein the metal is iron, stainless steel, or an aluminum alloy.

3. A deep hole water injection hole packer according to claim 1, wherein the telescopic pipe is a hose.