CN210239642U

CN210239642U - Coal mine gas extraction drilling hole sealing device

Info

Publication number: CN210239642U
Application number: CN201921257101.1U
Authority: CN
Inventors: Jie Wu; 武捷; Xiaobo Guo; 郭晓波; Hongchao Fu; 付红超
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-03
Anticipated expiration: 2029-08-06

Abstract

The utility model relates to a coal mine gas extraction drilling hole sealing device, which belongs to the technical field of gas extraction, and particularly comprises a conical guide head arranged at the front end of a core bar, a sliding section arranged at the middle part of the core bar, a threaded connection pipe arranged at the rear end of the core bar, an air exhaust channel arranged at the center of the core bar, an air suction pipe joint arranged on the air exhaust channel, an air suction pipe screwed on the air suction pipe joint, a plurality of air suction holes arranged on the circumference of the air suction pipe, an adjusting sliding sleeve arranged at the sliding section of the core bar, a first capsule connecting seat arranged at the front end of the adjusting sliding sleeve, a second capsule connecting seat arranged at the rear end of the conical guide head, an expansion capsule arranged between the first capsule connecting seat and the second capsule connecting seat, a medium channel arranged in the core bar, an outlet end of the medium channel communicated, the utility model discloses simple structure, convenient operation can guarantee that capsule internal pressure is even, and sealing area is big, and is sealed reliable.

Description

Coal mine gas extraction drilling hole sealing device

Technical Field

The utility model relates to a colliery gas drainage drilling hole sealing device belongs to gas drainage technical field.

Background

At present, the hole sealing of the coal mine gas drainage hole inserts a drainage pipe into the gas drainage hole, and then the periphery of the drainage pipe is sealed by cement mortar or polyurethane, and the like. The quick hole packer of water pressure formula, vapour-pressure type etc. in addition on the existing market, no matter water pressure formula, still the quick hole packer of vapour-pressure type, its hole sealing principle mainly seals up drilling through the inflation of pressure drive capsule, but because the both ends of capsule adopt fixed structure, capsule length can't go on, leads to the capsule when the inflation, and capsule internal pressure is inhomogeneous, by middle part to both sides gradual expansion deformation, just so appears following problem easily: first, the pressure in the capsule is not uniform, and the pressure in the capsule is large to achieve a sufficient sealing area, so that the water and air pipelines are easy to burst. And two sides of the capsule are in a tapered structure, so that the sealing area between the capsule and the drill hole is reduced, and the air leakage is easy to occur.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that prior art exists, the utility model provides a simple structure, convenient operation can guarantee that the capsule internal pressure is even, and sealing area is big, and sealed reliable colliery gas takes out and adopts drilling hole sealing device.

In order to achieve the purpose, the technical scheme adopted by the utility model is that the coal mine gas extraction drilling hole sealing device comprises a core bar and an air suction pipe, wherein the front end of the core bar is provided with a conical guide head, the middle part of the core bar is provided with a sliding section, the rear end of the core bar is provided with a threaded connecting pipe, the center of the core bar is provided with an air suction channel, one end of the air suction channel is provided with an air outlet, the other end of the air suction channel is provided with an air suction pipe joint, the air suction pipe is in threaded connection with the air suction pipe joint, the circumference of the air suction pipe is provided with a plurality of air suction holes, the sliding section of the core bar is also provided with an adjusting sliding sleeve, a plurality of sealing rings are arranged between the adjusting sliding sleeve and the core bar, the front end of the adjusting sliding sleeve is provided with a first capsule connecting seat, the, the two ends of the expansion capsule are respectively fixed on the first capsule connecting seat and the second capsule connecting seat through pipe clamps, a medium channel is further arranged in the core rod, the medium channel is parallel to the air exhaust channel, the outlet end of the medium channel is communicated with the expansion capsule, a jacking limiting device is further mounted on the threaded connecting pipe, and the jacking limiting device is used for preventing or driving the adjusting sliding sleeve to move.

Preferably, be provided with multichannel non-slip raised on the circumference of first capsule connecting seat and second capsule connecting seat, the both ends of inflation capsule are overlapped respectively on the non-slip raised, and install the pipe clamp between the non-slip raised.

Preferably, the tight stop device in top mainly comprises internal thread drive tube, driving sleeve, the internal thread drive tube is installed on threaded connection pipe, driving sleeve body coupling is at the front end of internal thread drive tube, and driving sleeve and internal thread drive tube set up with one heart, the internal diameter of driving sleeve is greater than the internal diameter of adjusting the sliding sleeve, and the driving sleeve contacts with the terminal surface of adjusting the sliding sleeve.

Preferably, the outside of the sliding section of the core bar is further provided with a protective cylinder, the rear part of the conical guide head is provided with an annular clamping groove, the inner wall of the protective cylinder slides along the outer wall of the adjusting sliding sleeve, one end close to the adjusting sliding sleeve is provided with a limiting check ring, one end far away from the adjusting sliding sleeve is sleeved on the annular clamping groove, and the outside of the limiting check ring is provided with a pulling handle.

Compared with the prior art, the utility model discloses following technological effect has: the utility model has simple structure and convenient use, adopts the expansion capsule sleeved on the core bar, one end of the expansion capsule is fixed on the core bar, the other end is fixed on the adjusting sliding sleeve, when in inflation, the expansion capsule can be deformed through the adjusting sliding sleeve firstly, so that the pressure in the expansion capsule is uniformly distributed, the expansion capsule can be rapidly expanded to form a cylinder shape, the sealing area between the expansion capsule and the drilled hole is lower, the sealing effect is better, and the air leakage is not easy to occur; meanwhile, the pressure in the expansion capsule is uniform, and the expansion crack of water and air pipelines can be avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention during operation.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, a coal mine gas extraction drilling and hole sealing device comprises a core bar 1 and an air suction pipe 2, a conical guide head 3 is arranged at the front end of the core bar 1, a sliding section 4 is arranged in the middle of the core bar 1, a threaded connection pipe 5 is arranged at the rear end of the core bar 1, an air suction channel 6 is arranged at the center of the core bar 1, an air outlet 7 is arranged at one end of the air suction channel 6, an air suction pipe joint 8 is arranged at the other end of the air suction pipe 1, the air suction pipe is in threaded connection with the air suction pipe joint 8, a plurality of air suction holes 9 are arranged on the circumference of the air suction pipe 2, an adjusting sliding sleeve 10 is further installed at the sliding section of the core bar 1, a plurality of sealing rings 11 are arranged between the adjusting sliding sleeve 10 and the core bar 1, a first capsule connection seat 12 is arranged at the front end of the, the two ends of the expansion capsule 14 are respectively fixed on the first capsule connecting seat 12 and the second capsule connecting seat 13 through the pipe clamps 15, the core rod 1 is further internally provided with a medium channel 16, the medium channel 16 is arranged in parallel with the air exhaust channel 6, the outlet end of the medium channel 16 is communicated with the expansion capsule 14, the threaded connecting pipe 5 is further provided with a jacking limiting device, and the jacking limiting device is used for preventing or driving the adjusting sliding sleeve to move.

The utility model discloses simple structure, high durability and convenient use, take out and adopt drilling construction and sweep the completion back, with the direct cartridge of core bar in the drilling, air exhaust passage's gas outlet has through the connecting pipe to take out and adopts the trunk line to connect, the medium passageway is connected with pump or liquid pump through the pipeline, then adjust the sliding sleeve to removing through the tight stop device drive in top, make the regulation sliding sleeve warp inflation capsule in advance, like this when aerifing or filling up, the inside atmospheric pressure of capsule is even, the capsule becomes cylindrically, the sealed area of capsule and drilling is bigger, it is sealed more reliable.

Wherein, the tight stop device in top mainly comprises internal thread drive tube 22, driving sleeve 23, and internal thread drive tube 22 installs on threaded connection pipe 5, and driving sleeve 23 body coupling is at the front end of internal thread drive tube 22, and driving sleeve 23 and internal thread drive tube 22 set up with one heart, and the internal diameter of driving sleeve 23 is greater than the internal diameter of adjusting sliding sleeve 10, and driving sleeve 23 and the end face contact of adjusting sliding sleeve 10. By adopting the structure, the structure is simple and reliable, the internal thread driving pipe can be directly driven by the pipe tongs, and can move rightwards along the threaded connecting pipe 5 while rotating, the adjusting sliding sleeve is driven to move, the operation is simple, and the moving distance is convenient to control. A plurality of anti-skid protrusions 17 are arranged on the circumferences of the first capsule connecting seat 12 and the second capsule connecting seat 13, two ends of the expansion capsule 14 are respectively sleeved on the anti-skid protrusions 17, and a pipe clamp 15 is arranged between the anti-skid protrusions 17. The anti-slip bulge can ensure that the pipe clamp is more reliably fixed, the capsule and the connecting seat are more tightly fixed, the sealing is reliable, and the leakage is prevented.

In addition, the outside of the sliding section of the core bar 1 is also provided with a protective cylinder 18, the rear part of the conical guide head 3 is provided with an annular clamping groove 19, the inner wall of the protective cylinder 18 slides along the outer wall of the adjusting sliding sleeve 10, one end close to the adjusting sliding sleeve 10 is provided with a limiting check ring 20, one end far away from the adjusting sliding sleeve 10 is sleeved on the annular clamping groove 19, and the outside of the limiting check ring 20 is provided with a pulling handle 21. In consideration of avoiding damage to the capsule caused by the inner wall of the drilled hole in the insertion process, a sliding protective cylinder is arranged outside the capsule, the protective cylinder is inserted into the drilled hole along with the core rod, then the adjusting sliding sleeve is adjusted, and the protective cylinder is pulled out by pulling the moving handle, so that the next operation can be carried out; meanwhile, the protective cylinder can also clear large-particle sundries in the drilled hole, and the smooth and flat sealing surface of the drilled hole is ensured, so that the sealing reliability is ensured.

The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a colliery gas drainage drilling hole sealing device which characterized in that: the air suction pipe comprises a core rod and an air suction pipe, wherein a conical guide head is arranged at the front end of the core rod, a sliding section is arranged in the middle of the core rod, a threaded connecting pipe is arranged at the rear end of the core rod, an air suction channel is arranged in the center of the core rod, an air outlet is arranged at one end of the air suction channel, an air suction pipe joint is arranged at the other end of the air suction channel, the air suction pipe is in threaded connection with the air suction pipe joint, a plurality of air suction holes are formed in the circumference of the air suction pipe, an adjusting sliding sleeve is further installed at the sliding section of the core rod, a plurality of sealing rings are arranged between the adjusting sliding sleeve and the core rod, a first capsule connecting seat is arranged at the front end of the adjusting sliding sleeve, a second capsule connecting seat is arranged at the rear end of the conical guide head, an expansion capsule, the core rod is internally provided with a medium channel, the medium channel is arranged in parallel with the air exhaust channel, the outlet end of the medium channel is communicated with the expansion capsule, the threaded connecting pipe is further provided with a jacking limiting device, and the jacking limiting device is used for preventing or driving the adjusting sliding sleeve to move.

2. The coal mine gas extraction drilling and sealing device according to claim 1, characterized in that: be provided with multichannel non-slip raised on the circumference of first capsule connecting seat and second capsule connecting seat, the both ends of inflation capsule are overlapped respectively on the non-slip raised, and install the pipe clamp between the non-slip raised.

3. The coal mine gas extraction drilling and sealing device according to claim 1, characterized in that: the tight stop device in top mainly comprises internal thread drive tube, driving sleeve, the internal thread drive tube is installed on the threaded connection pipe, driving sleeve body coupling is at the front end of internal thread drive tube, and driving sleeve and internal thread drive tube set up with one heart, the internal diameter of driving sleeve is greater than the internal diameter of adjusting the sliding sleeve, and the driving sleeve contacts with the terminal surface of adjusting the sliding sleeve.

4. The coal mine gas extraction drilling and sealing device according to claim 1, characterized in that: the outer portion of the sliding section of the core rod is further provided with a protective cylinder, the rear portion of the conical guide head is provided with an annular clamping groove, the inner wall of the protective cylinder slides along the outer wall of the adjusting sliding sleeve, a limiting check ring is arranged at one end close to the adjusting sliding sleeve, one end far away from the adjusting sliding sleeve is sleeved on the annular clamping groove, and a pulling handle is arranged outside the limiting check ring.