A kind of quick detection processing device for coal mine gas extraction pipeline blockage

Abstract

The utility model discloses a kind of for coal mine gas extraction pipeline block's rapid detection processing device, belong to coal mine gas extraction technical field;Including extraction pipe, the both ends of extraction pipe are provided with flange, and extraction pipe is connected in series with gas extraction pipeline by connecting bolt and flange;Gas outlet port inside extraction pipe is equipped with filter element, and filter element two sides are limited fixed using detachable file pole and fixed annular baffle;Two lifting hooks are symmetrically set in the upper portion of extraction pipe, and two through gas guide pipes are spaced apart in radial direction and set on the upper portion of extraction pipe between two lifting hooks, and two gas guide pipes are communicated outside extraction pipe by flowmeter, and the inside of two gas guide pipes is respectively communicated with extraction pipe and filter element located on the both sides of detachable file pole.The utility model device can determine blockage position and reflect blockage condition in time by setting filter element and flowmeter on extraction pipeline, realize the rapid detection of extraction pipeline blockage.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine gas extraction technology, specifically relating to a rapid detection and treatment device for blockage in coal mine gas extraction pipelines. Background Technology

[0002] Methane gas is a major hazard threatening safe production in coal mines, but it is also an important clean energy source. The purpose of coal mine methane drainage is to prevent and mitigate disasters, ensure national energy security, and reduce greenhouse gas emissions. During the coal mine methane drainage process, under negative pressure, impurities and slag enter the drainage pipeline, causing blockages and reducing the negative pressure and drainage efficiency.

[0003] Currently, the use of electronic products in underground coal mines must comply with relevant laws and regulations. The use of electronic devices that require external power supplies in the main return airway and dedicated return airway is strictly restricted. Therefore, the location of blockages is not easy to determine, and disposal is difficult. Manual inspection is labor-intensive, time-consuming, and inefficient.

[0004] Therefore, there is an urgent need to design a rapid detection and treatment device for blockages in coal mine gas drainage pipelines in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to solve the problem that impurities and slag in the mine are pumped into the pipeline during the existing gas extraction process, causing local pipeline blockage and reducing gas extraction efficiency. The invention provides a rapid detection and treatment device for blockage in coal mine gas extraction pipelines. By installing a filter element and a flow meter on the extraction pipeline, the location of the blockage can be clearly identified and the blockage situation can be reflected in a timely manner, thus achieving rapid detection and treatment of blockage in the extraction pipeline.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rapid detection and treatment device for blockage in coal mine gas extraction pipelines, comprising an extraction pipe, both ends of which are provided with flanges; a filter element is sleeved inside the gas outlet of the extraction pipe, the outer end face of the filter element is connected to the flange by a fixed annular baffle for limiting, a detachable baffle is provided on the inner end face of the filter element, and the filter element is fixedly connected inside the extraction pipe by the detachable baffle and the fixed annular baffle for limiting; two lifting hooks are symmetrically arranged at both ends of the upper part of the extraction pipe, and two through-hole gas guide pipes are arranged radially at intervals between the two lifting hooks on the upper part of the extraction pipe, and the two gas guide pipes are connected to the outside of the extraction pipe by a flow meter, and the interior of the two gas guide pipes are respectively connected to the extraction pipe and the filter element located on both sides of the detachable baffle.

[0007] Furthermore, the extraction pipe and the gas extraction pipeline have the same diameter, and the flange is fixed to both the extraction pipe and the gas extraction pipeline by bolts to form a series pipeline.

[0008] Furthermore, the detachable stop bar and the fixed annular baffle are interference-fitted with the extraction pipe, and the outer diameter of the filter element is the same as the inner diameter of the extraction pipe.

[0009] Furthermore, the filter element is made of PVC.

[0010] Furthermore, the flow meter is a glass rotor flow meter, model LZB-80.

[0011] The beneficial effects of this utility model are:

[0012] 1) In this utility model device, by setting a filter element in the extraction pipe, impurities and mineral debris accumulate in the extraction pipe due to the limitation of the filter element, which can transform passive random disordered blockage into active fixed-position filtration; and by setting a flow meter on the extraction pipe to measure the flow difference between the filter element section and the non-filter element section, the accumulation of impurities and mineral debris reduces the effective cross-sectional area of ​​the pipe, and the gas flow velocity increases compared with the non-blocked section, which can clearly identify the blockage location and reflect the blockage situation in a timely manner, making the blockage situation easy to monitor, reducing the workload of manual investigation, and improving work efficiency.

[0013] 2) The device of this utility model is equipped with a pair of lifting hooks, which are connected to the lifting equipment by steel wire rope, so as to facilitate the installation and disassembly of the extraction pipe, realize the rapid installation and disassembly of the device, and improve work efficiency.

[0014] 3) In this utility model device, the filter element is limited and fixed by a detachable baffle and a fixed retaining ring. When cleaning the clogged filter element, the extraction tube can be removed, the detachable baffle can be removed from the air inlet, the filter element can be extracted, and it can be reinstalled after cleaning. The design structure is simple, the filter element is easy to disassemble and install, and it can be reused after a simple rinse, reducing the cost of use.

[0015] 4) The entire device of this utility model has no electrical components, does not require a power supply, is not restricted by relevant laws and regulations, and can be installed and used in all roadways in coal mines. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] In the diagram, 1-extraction pipe, 2-removable baffle, 3-filter element, 4-fixed annular baffle, 5-flange, 6-lifting hook, 7-air guide pipe, 8-flow meter. Detailed Implementation

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0019] Example: Figure 1As shown, this utility model provides a rapid detection and treatment device for blockage of coal mine gas drainage pipelines, including a drainage pipe 1, with flanges 5 at both ends of the drainage pipe 1; the drainage pipe 1 and the gas drainage pipeline have the same diameter, and the flanges 5 are fixed to the drainage pipe 1 and the gas drainage pipeline in series by bolts to form a series pipeline.

[0020] A filter element 3 is installed inside the outlet port of the extraction pipe 1. The filter element 3 is made of PVC.

[0021] The outer end face of the filter element 3 is connected to the flange 5 by a fixed annular baffle 4. A detachable baffle 2 is connected to the inner end face of the filter element 3. The filter element 3 is fixedly connected to the extraction pipe 1 by the detachable baffle 2 and the fixed annular baffle 4. The detachable baffle 2 and the fixed annular baffle 4 are interference-fitted with the extraction pipe 1. The outer diameter of the filter element 3 is the same as the inner diameter of the extraction pipe 1.

[0022] Two lifting hooks 6 are symmetrically arranged at both ends of the upper part of the extraction pipe 1. Two through air pipes 7 are arranged radially at intervals on the upper part of the extraction pipe 1 between the two lifting hooks 6. The two air pipes 7 are connected to the outside of the extraction pipe 1 through a flow meter 8. The inside of the two air pipes 7 are respectively connected to the extraction pipe 1 and the filter element 3 located on both sides of the detachable baffle 2.

[0023] The flow meter 8 is a glass rotor flow meter, model LZB-80.

[0024] The specific usage method includes the following steps:

[0025] S1. Connect flange 5 in series with the gas extraction pipeline. After the pipeline is in normal use, read the value of glass rotor flow meter 8 as the initial reading and record it. Regularly inspect and record the readings. If a large deviation is found between the reading of flow meter 8 and the initial reading, it is determined that the filter element 3 is blocked and needs to be dealt with.

[0026] S2. Close the valve of the gas extraction pipeline section, use a wire rope to connect the lifting hook 6 to the lifting equipment, rotate and remove the connecting bolt, and remove the filter detector.

[0027] S3. Clean the large impurities and mineral chips in front of filter element 3, remove the detachable baffle 2, and pull out and clean filter element 3.

[0028] S4. After the filter element is dry, install the filter element 3 in place and fix it with the stop bar 2. Raise the filter detector to the installation position, rotate the bolt to connect and fix it to the gas extraction pipeline, check the airtightness of the connection, and open the extraction pipeline valve.

[0029] Working principle:

[0030] When gas passes through the filter element in the extraction pipe, impurities and slag accumulate in front of and inside the filter element, which can prevent blockage at other locations in the gas extraction pipeline and transform passive, random, and disorderly blockage into active, fixed-position accumulation.

[0031] The accumulation of impurities and slag reduces the cross-sectional area of ​​the extraction pipe, increases the flow velocity, and increases the reading of the glass rotor flowmeter, which can directly reflect the blockage in the extraction pipe. With the help of lifting equipment, the extraction pipe and filter element can be quickly disassembled and installed, enabling rapid detection and treatment of blockages in the extraction pipeline.

[0032] This invention utilizes a filter element installed within the extraction pipeline. Due to the filter element's limitations, impurities and mineral debris accumulate within the extraction pipeline, transforming passive, random, and disorderly blockage into active, fixed-position filtration. Furthermore, by installing a flow meter on the extraction pipeline, the flow difference between the filter element section and the non-filter element section is measured. The accumulation of impurities and mineral debris reduces the effective cross-sectional area of ​​the pipeline, resulting in an increased gas flow velocity compared to the unblocked section. This allows for the identification of blockage locations and timely reporting of blockage conditions, making blockage monitoring easier, reducing manual inspection workload, and improving work efficiency.

[0033] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A rapid detection and treatment device for blockage in coal mine gas drainage pipelines, characterized in that: The system includes an extraction pipe (1), with flanges (5) at both ends. A filter element (3) is fitted inside the outlet port of the extraction pipe (1). The outer end face of the filter element (3) is connected to the flange (5) by a fixed annular baffle (4). A detachable baffle (2) is provided on the inner end face of the filter element (3). The filter element (3) is fixedly connected to the extraction pipe (1) by the detachable baffle (2) and the fixed annular baffle (4). Two lifting hooks (6) are symmetrically arranged at both ends of the upper part of the extraction pipe (1). Two through-hole air guide pipes (7) are arranged radially at intervals on the upper part of the extraction pipe (1) between the two lifting hooks (6). The two air guide pipes (7) are connected to the outside of the extraction pipe (1) by a flow meter (8). The interior of the two air guide pipes (7) is connected to the extraction pipe (1) and the filter element (3) located on both sides of the detachable baffle (2).

2. The rapid detection and treatment device for blockage in coal mine gas drainage pipelines according to claim 1, characterized in that: The extraction pipe (1) has the same diameter as the gas extraction pipeline, and the flange (5) is fixed to the extraction pipe (1) and the gas extraction pipeline by bolts to form a series pipeline.

3. The rapid detection and treatment device for blockage in coal mine gas drainage pipelines according to claim 1, characterized in that: The detachable baffle (2) and the fixed annular baffle (4) are interference-fitted with the extraction pipe (1), and the outer diameter of the filter element (3) is the same as the inner diameter of the extraction pipe (1).

4. The rapid detection and treatment device for blockage in coal mine gas drainage pipelines according to claim 1, characterized in that: The filter element (3) is made of PVC.

5. A rapid detection and treatment device for blockage in coal mine gas drainage pipelines according to claim 1, characterized in that: The flow meter (8) is a glass rotor flow meter, model LZB-80.

Images