CN211422602U

CN211422602U - Underground gas extraction device with higher safety factor

Info

Publication number: CN211422602U
Application number: CN201922026858.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-04
Anticipated expiration: 2029-11-22

Abstract

The utility model provides an underground gas extraction device with higher safety factor, which comprises a main extraction pipe; and a plurality of shielding nets are fixedly embedded and arranged in an annular manner outside the main extraction pipe. The setting of latex lasso and visor, be favorable to improving sealed effect and bleed efficiency, the one end of taking out the pipe tape visor with the owner during use stretches into in the drilling, also inlay in the hole until gasbag position, at this moment aerify for the gasbag through the inflating valve, can make the latex lasso and the inside in close contact with of drilling in its outside after the gasbag inflation, and because latex lasso material is softer and there is fine elasticity, so can imbed in the unable narrow and small gap that infiltrates of gasbag, consequently just can greatly reduced these narrow and small gap gas leakage's possibility, take out the in-process protecting cover that the pipe promoted in to the drilling and shelter from the net can block outside grit and get into and take out the pipe with sheltering from, the visor can play the guard action to sheltering from the net again, the grit is difficult to get into inside or block up, the.

Description

Underground gas extraction device with higher safety factor

Technical Field

The utility model belongs to the technical field of colliery borehole operation instrument, more specifically say, in particular to possess higher factor of safety's downhole gas drainage device.

Background

Mine gas seriously threatens the safe production of coal mines. Gas explosion and gas outburst are one of the main disasters of the current coal mine, cause many casualties and huge property loss every year, prevent the gas disaster and reduce the coal mine accident and guarantee the healthy and continuous development of the coal industry, and have important significance.

For example, patent No. 201920318208.6 discloses a hole sealing structure for opening and closing the inside and outside of an extraction channel by bidirectional contraction and expansion of a supporting air bag. Simple structure, the gasbag can be dismantled, is convenient for maintain and nourish. Its characterized in that it has the ring channel to open on the induction pipe, the ring channel runs through leading-in pipe wall, it is the loop configuration to support the gasbag, and supports the gasbag inner circle cover and arrange in on the induction pipe, it is corresponding to support the ring channel on gasbag and the induction pipe, two lateral wall snap rings have been put on the lateral wall of induction pipe, and lie in the both sides that support the gasbag respectively, two outer snap rings block respectively and arrange in on two lateral wall snap rings, two outer snap rings are arranged respectively in at the both ends that support the gasbag, and lie in respectively between outer snap ring and the induction pipe outer wall, spacing arch has been put to outer snap ring inboard, it has the spacing groove to support gasbag both ends outer lane to open respectively, and respectively with correspond the inboard spacing arch of.

Based on the above search, the above patent also combines with most of the gas extraction hole sealing devices in the prior art, and the following problems exist when the device is used: the closed position of present gas drainage hole sealing device adopts the gasbag to seal a bit, but the gasbag is narrow and small gap in a bit after the inflation is difficult to get into, and these small gaps just have the possibility of gas leakage, stretch into the inside body of drilling in addition and directly be equipped with the bleeder vent that exposes more, stretch into the in-process and have the grit to leak into or block up in inside during operation inwards, are difficult to clear up, also influence air exhaust efficiency.

Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and an underground gas extraction device with a higher safety coefficient is provided, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a possess higher factor of safety's downhole gas drainage device to solve present gas drainage hole sealing device's enclosed position and adopt the gasbag to seal a bit, but the gasbag is difficult to get into in narrow and small gap a bit after the inflation, these small gaps just have the possibility of gas leakage, and stretch into the inside body of drilling and more directly be equipped with the bleeder vent that exposes moreover, inwards stretch into in-process and have the grit to leak into or block up in inside during operation, be difficult to clear up, also influence the problem of pumping efficiency.

The utility model discloses the purpose and the efficiency of the underground gas drainage device that possesses higher factor of safety are reached by following specific technological means:

an underground gas extraction device with a higher safety coefficient comprises a main extraction pipe; one end of the main extraction pipe is fixedly connected with a connecting pipe; an air bag is fixedly arranged on the outer side of the main extraction pipe; an annular latex ferrule is fixedly arranged on the outer side of the air bag; one side of the air bag is fixedly embedded with an inflating valve; a plurality of shielding nets are fixedly embedded and arranged outside the main extraction pipe in a ring shape; and the outer sides of the shielding nets are fixedly provided with protective covers fixedly connected with the main extraction pipe.

Further, the latex ferrule is a latex ring with the thickness of 0.6cm, and is adhered to the outer side of the air bag through strong double-faced adhesive.

Furthermore, a plurality of round holes are fixedly arranged on the outer side of the main extraction pipe in an annular arrangement mode, and shielding nets are respectively installed in the round holes.

Furthermore, the protective covers are of umbrella-shaped structures, are fixedly connected with the outer sides of the main extraction pipes through four support columns, and are provided with 0.3cm gaps with the main extraction pipes.

Furthermore, one end of the main extraction pipe is of a closed structure, and when the gas-liquid separator is used, gas enters the inner side of the main extraction pipe through a circular hole in the outer side of the main extraction pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

the setting of latex lasso and visor, be favorable to improving sealed effect and bleed efficiency, the one end of taking out the pipe tape visor with the owner during use stretches into in the drilling, also inlay in the hole until gasbag position, at this moment aerify for the gasbag through the inflating valve, can make the latex lasso and the inside in close contact with of drilling in its outside after the gasbag inflation, and because latex lasso material is softer and there is fine elasticity, so can imbed in the unable narrow and small gap that infiltrates of gasbag, consequently just can greatly reduced these narrow and small gap gas leakage's possibility, take out the in-process protecting cover that the pipe promoted in to the drilling and shelter from the net can block outside grit and get into and take out the pipe with sheltering from, the visor can play the guard action to sheltering from the net again, the grit is difficult to get into inside or block up, the.

Drawings

Fig. 1 is a schematic diagram of the left-side structure of the present invention.

Fig. 2 is a schematic diagram of the right-side structure of the present invention.

Fig. 3 is the schematic axial side structure after the cutting of the utility model.

Fig. 4 is a schematic diagram of a partially enlarged structure in fig. 3 according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a main extraction pipe; 2. an air bag; 3. a latex ferrule; 4. an air valve; 5. a protective cover; 6. a connecting pipe; 7. a screen.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 4:

the utility model provides an underground gas extraction device with higher safety factor, which comprises a main extraction pipe 1; one end of the main extraction pipe 1 is fixedly connected with a connecting pipe 6; a plurality of circular holes are fixedly arranged on the outer side of the main extraction pipe 1 in an annular manner, the shielding nets 7 are respectively installed in the circular holes, the protective cover 5 and the shielding nets 7 can prevent external sand and stones from entering the main extraction pipe 1 in the process that the main extraction pipe 1 is pushed into a drill hole, the protective cover 5 can also play a role in protecting the shielding nets 7, and the sand and stones are not easy to enter the main extraction pipe or be blocked; an air bag 2 is fixedly arranged on the outer side of the main extraction pipe 1; the outer side of the air bag 2 is also fixedly provided with an annular latex ferrule 3; one side of the air bag 2 is fixedly embedded with an inflating valve 4; a plurality of shielding nets 7 are fixedly embedded and arranged on the outer side of the main extraction pipe 1 in a ring shape; the outer sides of the blocking nets 7 are fixedly provided with protective covers 5 fixedly connected with the main extraction pipe 1; the protective cover 5 is of an umbrella-shaped structure, the protective cover 5 is fixedly connected with the outer side of the main extraction pipe 1 through four support columns, and a gap of 0.3cm is reserved between the protective cover 5 and the main extraction pipe 1, gas can firstly pass through a gap between the protective cover 5 and the main extraction pipe 1 and pass through the shielding net 7 to enter the main extraction pipe 1 during air extraction, then the gas is discharged outwards through the connecting pipe 6, in addition, in the process that the main extraction pipe 1 pushes the hole, the protective cover 5 and the shielding net 7 can block external sand and stone from entering the main extraction pipe 1, the protective cover 5 can play a role in protecting the shielding net 7, sand and stone are not easy to enter the inside or block, and the air extraction efficiency is improved.

Wherein, latex lasso 3 is the latex ring of thickness 0.6cm, and it glues in the outside of gasbag 2 through powerful double faced adhesive tape, during the use with the one end of taking out main extraction pipe 1 area visor 5 stretch into the drilling, also inlay in the hole until gasbag 2 position, at this moment aerify gasbag 2 through inflating valve 4, make the inside in close contact with of latex lasso 3 and the drilling in its outside after gasbag 2 inflation, and because latex lasso 3 material is softer and have fine elasticity, so can imbed in the narrow and small gap that gasbag 2 can't permeate.

Wherein, the one end of main extraction pipe 1 is closed structure, gas enters main extraction pipe 1 inboard through the round hole of main extraction pipe 1 outside during the use, gas can pass through the gap between visor 5 and the main extraction pipe 1 earlier and pass and block net 7 and get into main extraction pipe 1 when bleeding, then outwards discharge through connecting pipe 6 again, and in the in-process protecting cover 5 that main extraction pipe 1 promoted in to the drilling with block net 7 and can block outside grit and enter main extraction pipe 1, visor 5 can play the guard action again to blocking net 7, the grit is difficult to get into inside or block up, improve air extraction efficiency.

The specific use mode and function of the embodiment are as follows:

the utility model discloses in, when using this device to take out and take out the gas, at first in colliery wall drilling in the pit, then with main one end of taking out 1 area visor 5 of taking out and take out pipe stretch into the drilling, also inlay the hole up to gasbag 2 position, at this moment aerify for gasbag 2 through inflating valve 4, can make the latex lasso 3 and the inside in close contact with in drilling in its outside after gasbag 2 inflation, and because latex lasso 3 material is softer and there is fine elasticity, so can imbed in the narrow and small gap that gasbag 2 can't permeate into, consequently just so can greatly reduced the possibility of these narrow and small gap gas leakages, be connected connecting pipe 6 and outside exhaust pipe after fixed, then inside gas alright take out earlier through visor 5 and main gap of taking out between the pipe 1 and pass and block net 7 and get into main taking out and take out pipe 1, then through connecting pipe 6 outwards discharges again, and taking out the in-process protecting cover 5 that pipe 1 promoted in to the drilling and block out net 7 and block that outside entering main grit is taken In, visor 5 can play the guard action to sheltering from net 7 again, and the grit is difficult to get into inside or block up, improves the efficiency of bleeding.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a possess lower gas drainage device of higher factor of safety which characterized in that: comprises a main extraction pipe (1); one end of the main extraction pipe (1) is fixedly connected with a connecting pipe (6); an air bag (2) is fixedly arranged on the outer side of the main extraction pipe (1); an annular latex ferrule (3) is fixedly arranged on the outer side of the air bag (2); one side of the air bag (2) is fixedly embedded with an air valve (4); a plurality of shielding nets (7) are fixedly embedded and arranged in an annular shape at the outer side of the main extraction pipe (1); and the outer sides of the shielding nets (7) are fixedly provided with protective covers (5) fixedly connected with the main extraction pipes (1).

2. The underground gas extraction device with the higher safety factor of claim 1, which is characterized in that: the latex ferrule (3) is a latex ring with the thickness of 0.6cm and is adhered to the outer side of the air bag (2) through strong double-faced adhesive.

3. The underground gas extraction device with the higher safety factor of claim 1, which is characterized in that: the outer side of the main extraction pipe (1) is annularly and fixedly provided with a plurality of round holes, and shielding nets (7) are respectively installed in the round holes.

4. The underground gas extraction device with the higher safety factor of claim 1, which is characterized in that: the protective cover (5) is of an umbrella-shaped structure, is fixedly connected with the outer side of the main extraction pipe (1) through four support columns, and is provided with a 0.3cm gap with the main extraction pipe (1).

5. The underground gas extraction device with the higher safety factor of claim 1, which is characterized in that: one end of the main extraction pipe (1) is of a closed structure, and when the gas-liquid separator is used, gas enters the inner side of the main extraction pipe (1) through a circular hole in the outer side of the main extraction pipe (1).