CN211144564U

CN211144564U - Energy-saving gas drainage pipeline based on pressure difference

Info

Publication number: CN211144564U
Application number: CN201921330186.1U
Authority: CN
Inventors: 郝富强; 李维柱; 王姣; 程建斌; 杨海燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-07-31
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses an energy-saving gas drainage pipeline based on pressure differential, take out and take out pipe, load control tube coupling and transmission line including pipeline body, mesh screen, the pipeline body takes out and takes out pipe, load control tube coupling and transmission line by the mesh screen and constitute, the mesh screen takes out the output end of taking out the pipe and separates dirt mesh screen fixed connection, the outside terminal surface of mesh screen and the medial surface fixed connection that separates the dirt mesh screen, the mesh screen takes out the output end of taking out the pipe and communicates with the one end of switching pipe is fixed, and the other end of switching pipe and the fixed intercommunication of one end of vary voltage conveyer pipe. This energy-saving gas drainage pipeline based on pressure differential realizes taking out debris such as in-process impurity dust and get into the pipeline and cause the pipeline to block and reduce life through setting up the mesh screen drainage pipe, sets up the load and adjusts the tube coupling and realize negative pressure formula gas extraction, has characteristics such as simple structure energy-concerving and environment-protective assembly strong adaptability, utilizes the gas that the transmission pipeline carried the extraction to collection equipment at last.

Description

Energy-saving gas drainage pipeline based on pressure difference

Technical Field

The utility model relates to a gas extraction technical field, concretely relates to energy-saving gas takes out and adopts pipeline based on pressure differential.

Background

During the formation of coal, a large amount of hydrocarbon gas mainly containing methane, commonly called gas or coal bed gas, is associated. The formation, storage and release of gas is always accompanied by the whole coal-forming process. In the lengthy geologic age, as coal-bearing formations are subjected to various tectonic movements, most of the gas has heretofore escaped to the atmosphere, with only a portion remaining in the coal and rock formations. Underground gas disasters are one of the most serious disasters in the coal mine production process. After comprehensive investigation, the gas extraction operation is generally considered to effectively reduce the gas concentration of the coal bed, avoid outburst disasters of coal and gas, and provide a novel energy source. The method can adopt special equipment to pump out or discharge combustible gas in the coal bed, the rock stratum and the goaf and collect and utilize the combustible gas. There are many methods for intensifying, pumping and exploiting coal seam gas, such as high and medium pressure water injection, hydraulic fracturing, hydraulic slotting, loosening blasting, large diameter (hole-expanding) drilling, grid type dense hole distribution, presplitting control blasting, cross hole distribution and so on. Among these methods, most of them achieve the effect of improving the gas extraction amount in the test area.

The gas extraction in the existing mine mostly utilizes the negative pressure principle, but most negative pressure pipelines have simpler structures, are incomplete in gas extraction, and have the defects of uneven negative pressure distribution and lower efficiency. Therefore, a novel energy-saving gas extraction pipeline based on pressure difference is urgently needed to be provided, so that efficient, energy-saving and safe gas extraction work is effectively realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, the utility model aims at providing an energy-saving gas drainage pipeline based on pressure differential, take out pipe, load control tube joint and transmission line including pipeline body, mesh screen, the pipeline body takes out pipe, load control tube joint and transmission line by the mesh screen and constitutes, the mesh screen takes out the output end and the dust separation mesh screen fixed connection of taking out the pipe, and the inner chamber that the pipe was taken out to the mesh screen is equipped with two-layer mesh screen, the outside terminal surface of mesh screen and the medial extremity fixed connection of dust separation mesh screen, the output end that the pipe was taken out to the mesh screen is with the fixed intercommunication of the one end of switching pipe, and the other end of switching pipe and the fixed intercommunication of one end of vary voltage conveyer pipe.

Preferably, the other end of the variable-pressure conveying pipe is fixedly connected with the input end of the load adjusting pipe joint, a stepped cavity is formed in the middle of the variable-pressure conveying pipe, and the inner diameters of two ends of the stepped cavity are the same and are smaller than the diameter of the middle cavity.

Preferably, a sealing and fixing device is arranged at the fixed connection position of the load adjusting pipe joint and the variable pressure conveying pipe, and the diameter of the input end of the load adjusting pipe joint is the same as that of the output end of the stepped cavity channel.

Preferably, the sealing and fixing device consists of a sealing sleeve and a fastening bolt, a threaded cavity sleeve is fixedly arranged at the top end of the sealing sleeve, a bolt embedded column is fixedly arranged at the top end of the fastening bolt, and the middle part of the bolt embedded column is rotatably connected with the fastening bolt.

Preferably, the threaded cavity sleeve and the bolt embedded column are mutually nested and are in internal threaded connection, the sealing sleeve and the output end face of the fastening bolt are both fixedly provided with sealing rings, and the two sealing rings are in contact connection.

Preferably, the outer surface of the load adjusting pipe joint is fixedly provided with a partial pressure sleeve column, a negative pressure cavity is formed in the load adjusting pipe joint, and a plurality of partial pressure branches are formed between the input end and the output end of the load adjusting pipe joint by the partial pressure sleeve column.

Preferably, the front end of the negative pressure cavity is provided with a sealing ball, the rear end of the negative pressure cavity is fixedly provided with supporting springs which are different in size, opposite in rotation direction and mutually nested, the sealing ball is in sealing contact with the input port of the negative pressure cavity, and extrusion pressure exists between the sealing ball and the supporting springs.

Preferably, the specific number of the voltage dividing branches is two, and the side ends of the voltage dividing branches are provided with through holes connected with the input end of the flowmeter.

Preferably, a sealing and fixing device is arranged between the output end of the load adjusting pipe joint and the transmission pipeline and fixedly connected with the output end of the load adjusting pipe joint.

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

1. this energy-saving gas drainage pipeline based on pressure differential realizes taking out debris such as in-process impurity dust and get into the pipeline and cause the pipeline to block and reduce life through setting up the mesh screen drainage pipe, sets up the load and adjusts the tube coupling and realize negative pressure formula gas extraction, has characteristics such as simple structure energy-concerving and environment-protective assembly strong adaptability, utilizes the gas that the transmission pipeline carried the extraction to collection equipment at last.

2. This energy-saving gas drainage pipeline based on pressure differential, play absolute debris function of preventing through dust proof mesh screen and double-deck mesh screen, the switching pipe is adopted the mesh screen and is adopted the pipe and link firmly with the good transition of vary voltage conveyer pipe, the vary voltage conveyer pipe realizes carrying the pressurization of gas through setting up the ladder chamber way that the internal diameter differs, and the nested and threaded connection of seal cover and fastening bolt of sealed fixing device, the leak protection sealing function of junction is accomplished to the collocation sealing washer, has the security performance more, set up two partial pressure branch roads thin and long in addition, the input and the output of intercommunication tube head can realize being taken out when gas concentration is very little, the gas of heavy concentration, be transmitted under the negative pressure of following sealed ball and supporting spring, nested supporting spring performance transmission is more stable.

Drawings

FIG. 1 is the overall structure diagram of the energy-saving gas extraction pipeline based on pressure difference of the utility model;

FIG. 2 is the overall appearance structure diagram of the energy-saving gas extraction pipeline based on the pressure difference of the utility model;

FIG. 3 is a partial structure view of a mesh screen extraction pipe of the energy-saving gas extraction pipeline based on pressure difference;

FIG. 4 is a partial structure view of the sealing and fixing device of the energy-saving gas extraction pipeline based on pressure difference;

fig. 5 is the utility model relates to a load control pipe section structure chart of energy-saving gas drainage pipeline based on pressure differential.

In the figure: 1. the pipeline comprises a pipeline body, 2, a mesh screen extraction pipe, 3, a load adjusting pipe joint, 4, a transmission pipeline, 5, a dust separation mesh screen, 6, a mesh screen, 7, a switching pipe, 8, a variable pressure conveying pipe, 9, a step cavity channel, 10, a sealing and fixing device, 11, a sealing sleeve, 12, a fastening bolt, 13, a thread cavity sleeve, 14, a bolt embedded column, 15, a fastening bolt, 16, a sealing ring, 17, a partial pressure sleeve column, 18, a partial pressure branch, 19, a sealing ball, 20, a supporting spring, 21 and a flowmeter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an energy-saving gas extraction pipeline based on pressure difference comprises a pipeline body 1, a mesh screen extraction pipe 2, a load adjusting pipe section 3 and a transmission pipeline 4, wherein the pipeline body 1 consists of the mesh screen extraction pipe 2, the load adjusting pipe section 3 and the transmission pipeline 4, the output tail end of the mesh screen extraction pipe 2 is fixedly connected with a dust-proof mesh screen 5, two layers of mesh screens 6 are arranged in an inner cavity of the mesh screen extraction pipe 2, the outer end face of each mesh screen 6 is fixedly connected with the inner side end face of the dust-proof mesh screen 5, the output tail end of the mesh screen extraction pipe 2 is fixedly communicated with one end of an adapter pipe 7, the other end of the adapter pipe 7 is fixedly communicated with one end of a variable-pressure transmission pipe 8, the other end of the variable-pressure transmission pipe 8 is fixedly connected with the input end of the load adjusting pipe section 3, the dust-proof mesh screen 5 and the double-layer mesh screens 6 play an absolute sundry prevention function, the adapter pipe 7 enables the extraction pipe 2 to, the middle part of the variable pressure conveying pipe 8 is provided with a stepped cavity channel 9, the inner diameters of two ends of the stepped cavity channel 9 are the same and are smaller than the diameter of the middle cavity, the variable pressure conveying pipe 8 realizes the pressurized conveying of gas by arranging the stepped cavity channels 9 with different inner diameters, the fixedly connected part of the load adjusting pipe joint 3 and the variable pressure conveying pipe 8 is provided with a sealing and fixing device 10, the input end diameter of the load adjusting pipe joint 3 is the same as the output end diameter of the stepped cavity channel 9, the sealing and fixing device 10 consists of a sealing sleeve 11 and a fastening bolt 12, the sealing sleeve 11 of the sealing and fixing device 10 is nested and in threaded connection with the fastening bolt 12, the top end of the sealing sleeve 11 is fixedly provided with a threaded cavity sleeve 13, the top end of the fastening bolt 12 is fixedly provided with a bolt embedded column 14, the middle part of the bolt embedded column 14 is rotationally connected with a fastening bolt 15, the threaded cavity sleeve 13 is mutually nested and, the sealing sleeve 11 and the output end face of the fastening bolt 12 are both fixedly provided with a sealing ring 16, the two sealing rings 16 are in contact connection, the sealing ring 16 completes the leak-proof sealing function of the joint and has better safety performance, the outer surface of the load adjusting pipe joint 3 is fixedly provided with a partial pressure sleeve column 17, a negative pressure cavity is formed in the load adjusting pipe joint 3, a plurality of partial pressure branches 18 are formed between the input end and the output end of the load adjusting pipe joint 3 by the partial pressure sleeve column 17, the two partial pressure branches 18 are thin and long, the input end and the output end of the communicating pipe head can be extracted when the gas concentration is very small, the front end of the negative pressure cavity is provided with a sealing ball 19, the rear end of the negative pressure cavity is fixedly provided with supporting springs 20 which are different in size and opposite in rotation direction and are nested with each other, the sealing ball 19 is in sealing contact with the input port of the negative pressure cavity, and the extrusion pressure, the specific number of the pressure dividing branch pipes 18 is two, the side ends of the pressure dividing branch pipes 18 are provided with through holes to be connected with the input end of the flowmeter 21, the sealing and fixing device 10 is fixedly connected between the output end of the load adjusting pipe section 3 and the transmission pipeline 4, high-concentration gas is transmitted under the negative pressure of the sealing ball 19 and the supporting spring 20, and the nested supporting spring 20 is more stable in performance transmission.

The working principle is as follows: the utility model discloses energy-saving gas drainage pipeline based on pressure difference, through setting up the mesh screen and taking out pipe 2 and realize that debris such as impurity dust gets into the pipeline and cause the pipeline to block and reduce life in taking out the in-process, set up load control tube coupling 3 and realize negative pressure formula gas extraction, have characteristics such as simple structure energy-concerving and environment-protective assembly strong adaptability, utilize transmission line 4 to carry the gas of extraction to collection equipment at last, wherein the concrete structure function is, dust-proof mesh screen 5 and double-deck mesh screen 6 play absolute debris prevention function, switching pipe 7 takes out the mesh screen and takes out pipe 2 and the good transition of vary voltage conveyer pipe 8 to link firmly, vary voltage conveyer pipe 8 realizes the pressurization of gas through setting up the ladder chamber way 9 that the internal diameter is different, and the nested and threaded connection of seal cover 11 and anchorage 12 of sealed fixing device 10, sealing washer 16 accomplishes the leak protection sealed function of junction, the gas extraction device has better safety performance, and in addition, two pressure-dividing branches 18 are arranged to be thin and long, so that the input end and the output end of the communicating pipe head can be used for extracting gas with small gas concentration, the gas with large concentration is transmitted under the negative pressure of the sealing ball 19 and the supporting spring 20, and the nested supporting spring 20 has more stable performance transmission.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an energy-saving gas drainage pipeline based on pressure differential, includes pipeline body (1), mesh screen drainage pipe (2), load control tube coupling (3) and transmission line (4), its characterized in that, pipeline body (1) is taken out by the mesh screen and is taken out pipe (2), load control tube coupling (3) and transmission line (4) and constitute, the output end and the dust separation mesh screen (5) fixed connection of mesh screen drainage pipe (2), and the inner chamber of mesh screen drainage pipe (2) is equipped with two-layer mesh screen (6), the outside terminal surface of mesh screen (6) and the medial surface fixed connection of dust separation mesh screen (5), the output end of mesh screen drainage pipe (2) is fixed the intercommunication with the one end of switching pipe (7), and the other end of switching pipe (7) is fixed the intercommunication with the one end of vary voltage conveyer pipe (8).

2. The energy-saving gas extraction pipeline based on the pressure difference as claimed in claim 1, wherein the other end of the variable pressure conveying pipe (8) is fixedly connected with the input end of the load adjusting pipe joint (3), a stepped cavity (9) is formed in the middle of the variable pressure conveying pipe (8), and the inner diameters of two ends of the stepped cavity (9) are the same and are smaller than the diameter of the middle cavity.

3. The energy-saving gas extraction pipeline based on the pressure difference as claimed in claim 1, wherein a sealing and fixing device (10) is arranged at the fixedly connected position of the load adjusting pipe joint (3) and the variable pressure conveying pipe (8), and the diameter of the input end of the load adjusting pipe joint (3) is the same as that of the output end of the stepped cavity channel (9).

4. The energy-saving gas extraction pipeline based on the pressure difference as claimed in claim 3, wherein the sealing and fixing device (10) is composed of a sealing sleeve (11) and a fastening bolt (12), a threaded cavity sleeve (13) is fixedly arranged at the top end of the sealing sleeve (11), a bolt embedded column (14) is fixedly arranged at the top end of the fastening bolt (12), and the middle part of the bolt embedded column (14) is rotatably connected with the fastening bolt (15).

5. The energy-saving gas extraction pipeline based on the pressure difference as claimed in claim 4, wherein the threaded cavity sleeve (13) and the bolt embedded column (14) are mutually nested and are in threaded connection inside, the sealing sleeve (11) and the output end face of the fastening bolt (12) are both fixedly provided with a sealing ring (16), and the two sealing rings (16) are in contact connection.

6. The energy-saving gas extraction pipeline based on the pressure difference as recited in claim 1, wherein a partial pressure casing string (17) is fixedly arranged on the outer surface of the load adjusting pipe joint (3), a negative pressure cavity is formed in the load adjusting pipe joint (3), and a plurality of partial pressure branches (18) are formed between the input end and the output end of the load adjusting pipe joint (3) through the partial pressure casing string (17).

7. The energy-saving gas extraction pipeline based on the pressure difference as recited in claim 6, characterized in that a sealing ball (19) is arranged at the front end of the negative pressure cavity, supporting springs (20) which are opposite in rotation direction and are nested with each other are fixedly arranged at the rear end of the negative pressure cavity, the sealing ball (19) is in sealing contact with the input port of the negative pressure cavity, and extrusion pressure exists between the sealing ball (19) and the supporting springs (20).

8. The energy-saving gas extraction pipeline based on the pressure difference as recited in claim 1, wherein a sealing and fixing device (10) is arranged between the output end of the load adjusting pipe joint (3) and the transmission pipeline (4) for fixing connection.