Gas extraction pipe network anti-blocking self-cleaning device

Abstract

The utility model belongs to coal mine gas extraction equipment technical field, concretely relates to a kind of coal mine gas extraction pipe network anti-blocking self-cleaning equipment.The equipment includes extraction pipe, block monitoring component, self-cleaning component, control module and blowdown device.The block monitoring component is composed of pressure sensor and ultrasonic sensor, for real-time monitoring pipeline internal pressure and coal slime deposition thickness;The self-cleaning component includes the cleaning seat and rotary blade sliding along guide rail, can realize pipeline inner wall full coverage cleaning;Control module is connected with monitoring component, driving mechanism, can automatically trigger cleaning and blowdown process after block detection.The utility model realizes the block positioning of gas extraction pipe network, automatic cleaning and dirt discharge integration, improves the continuity and security of pipe network operation, and is applicable to long-term stable operation of coal mine gas extraction system.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine gas extraction equipment, and in particular relates to a self-cleaning device for preventing blockage in coal mine gas extraction pipelines. Background Technology

[0002] In the process of coal mine gas drainage, the gas drainage pipeline network is one of the key pieces of equipment to ensure the stable operation of the system. Its smoothness directly affects the gas drainage efficiency and the level of safe production in the mine.

[0003] Because the gas extraction medium often contains coal slurry, dust and water, coal slurry deposition and water retention are likely to occur in the pipeline during long-term operation, especially in low-lying sections, which can easily lead to blockage, increased extraction resistance or even pipeline interruption.

[0004] Currently, the blockage problem in gas extraction pipelines is mainly solved through the following two methods: First, regular manual inspections and cleaning require stopping the machine and dismantling the pipeline, which is not only labor-intensive and costly, but also affects the continuity of gas extraction. Secondly, a fixed-position flushing device is used, but its cleaning range is limited, and it can only clean local areas. It is difficult to effectively deal with blockages in the middle or bends of the pipe.

[0005] In addition, the existing system lacks accurate monitoring of the location of blockages, often resulting in "blind cleaning" or "delayed processing," leading to low cleaning efficiency and high operational risks.

[0006] Therefore, there is an urgent need for an intelligent device that can monitor and automatically clear blockages in real time to improve the continuity and safety of gas extraction systems. Utility Model Content

[0007] This invention aims to solve the problems of easy clogging, low cleaning efficiency, and reliance on manual labor in existing gas extraction pipelines. It provides a device that can monitor the clogging status in real time and automatically complete precise cleaning to improve the continuity and efficiency of gas extraction and reduce safety hazards.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A self-cleaning device for preventing blockage in coal mine gas extraction pipelines, comprising extraction pipes; The inner wall of the extraction pipe is provided with several sets of blockage monitoring components at intervals along the axial direction. The blockage monitoring components include pressure sensors and ultrasonic sensors. A pressure sensor is embedded in the inner wall of the extraction pipe to detect changes in the pressure of the medium inside the pipe; an ultrasonic sensor is fixed to the outer wall of the extraction pipe to transmit and receive reflected signals from inside the pipe, thereby determining the thickness of the coal slime deposit.

[0009] The extraction tube is equipped with a self-cleaning component, which includes a guide rail extending along the tube axis and a cleaning seat slidably connected to the guide rail. A rotating scraper is arranged around the outside of the cleaning seat, and the rotating scraper is connected to the cleaning seat through a drive shaft for scraping off deposits.

[0010] A drive mechanism is fixed to the outer wall of the extraction pipe. The drive mechanism drives the cleaning seat to move along the guide rail through the transmission steel cable, so as to realize the reciprocating operation of the cleaning seat in the pipe.

[0011] The outer wall of the extraction tube is equipped with a control module, which is connected to the blockage monitoring component, the drive mechanism and the motor of the rotating scraper, respectively, and is used to receive monitoring signals and automatically control the cleaning process.

[0012] The bottom of the extraction pipe has a sewage outlet at the corresponding position of each monitoring component, which is connected to the sewage collection box. The liquid level sensor inside is electrically connected to the control module to monitor the sewage level and provide sewage discharge reminders.

[0013] Furthermore, the guide rail consists of two parallel slide rails, symmetrically fixed to the bottom of the inner wall of the extraction tube, and the top of the cleaning seat is provided with a slider structure that cooperates with the slide rails.

[0014] Furthermore, the rotating scraper is made of wear-resistant rubber, with a rotation angle of 0 to 360°, and the rotation speed is adjusted by the control module to adapt to different degrees of blockage.

[0015] Furthermore, the driving mechanism is a servo motor, the transmission component is a high-strength steel cable, and the output end of the servo motor is equipped with a drum structure for winding and unwinding the steel cable to achieve smooth movement of the cleaning seat.

[0016] Furthermore, a position sensor is installed inside the cleaning seat to monitor the position of the cleaning seat on the guide rail in real time and feed the position information back to the control module.

[0017] Furthermore, the control module integrates a wireless communication unit, which can transmit the blockage status, cleaning progress, and equipment operation data to the remote monitoring terminal in real time, enabling remote intelligent management.

[0018] Furthermore, a detachable sludge collection box is connected below the sewage outlet. The bottom of the sludge collection box is equipped with a liquid level sensor, which is electrically connected to the control module to monitor the sewage level and issue a cleaning prompt. Beneficial effects

[0019] Compared with the prior art, the present invention has the following advantages and positive effects: Precise monitoring of blockage status: By combining pressure sensors and ultrasonic sensors, abnormal pressure and changes in deposit thickness inside the pipe can be captured in real time, enabling precise location of blockages and avoiding the delays and blind cleaning of manual inspections.

[0020] High efficiency of automated cleaning: The self-cleaning component adopts a guide rail sliding design, which can cover the entire length of the pipe; the rotating scraper realizes physical scraping and removal of deposits, solving the problem of limited cleaning range of fixed cleaning devices.

[0021] Significantly reduces manual intervention: The system automatically completes the detection, cleaning and sewage discharge process through the control module, eliminating the need for manual pipe disassembly, reducing labor intensity and maintaining continuous sampling.

[0022] Intelligent management and enhanced safety: The control module has wireless communication and liquid level monitoring functions, which can realize remote data acquisition and intelligent control, reduce the risk of gas accumulation caused by blockage, and improve the safety of system operation.

[0023] Stable structure and strong adaptability: It adopts a double guide rail and high-strength steel cable transmission structure, combined with wear-resistant rubber scrapers, to adapt to complex working conditions such as high humidity and dust in coal mines, and extend the service life of the equipment.

[0024] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the assembly structure of the self-cleaning component and the extraction pipe; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Extraction pipe; 2. Pressure sensor; 3. Ultrasonic sensor; 4. Servo motor; 5. Control module; 6. Drain outlet; 7. Sewage collection box; 8. Rotary scraper; 9. Cleaning seat; 10. Guide rail; 11. Transmission cable. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] This utility model is a self-cleaning device for preventing blockage in coal mine gas drainage pipelines. It includes a drainage pipe 1. A set of blockage monitoring components is installed on the inner wall of the drainage pipe 1 every 2 meters along the axial direction. Each set of blockage monitoring components includes a pressure sensor 2 embedded in the inner wall of the drainage pipe 1 and an ultrasonic sensor 3 fixed to the outer wall. The pressure sensor 2 detects the pressure change of the medium in the pipe in real time (the pressure will rise abnormally when blocked). The ultrasonic sensor 3 determines the thickness of coal slime deposit in the pipeline by emitting ultrasonic waves and receiving reflected signals.

[0029] The extraction tube 1 is equipped with a self-cleaning component, which includes two parallel guide rails 10 fixed to the top of the inner wall of the extraction tube 1. A cleaning seat 9 is slidably connected to the guide rails 10. The outer side of the cleaning seat 9 is surrounded by a wear-resistant rubber rotating scraper 8. The edge of the scraper is tightly fitted to the inner wall of the extraction tube 1. The rotating scraper 8 is connected to a micro motor in the cleaning seat 9 through a drive shaft, which can achieve 0-360° rotation.

[0030] A servo motor 4 (drive mechanism) is fixed at one end of the outer wall of the extraction tube 1. The output end of the servo motor 4 is connected to a high-strength steel cable 11 and connected to the cleaning seat 9. The cleaning seat 9 is driven to move back and forth along the guide rail 10 by the forward and reverse rotation of the motor. A control module 5 is fixed in the middle of the outer wall of the extraction tube 1. The control module 5 is connected to the pressure sensor 2, the ultrasonic sensor 3, and the servo motor 4 respectively. It is used to receive monitoring signals and control the operation of each component.

[0031] At the bottom of the extraction pipe 1, a drain port 6 is provided corresponding to the position of each group of blockage monitoring components. The drain port 6 is detachably connected to the sludge collection box 7. The liquid level sensor in the sludge collection box 7 can monitor the sewage volume in real time and feed it back to the control module 5 to remind it to clean in time.

[0032] In this specific application, the pressure sensor 2 and ultrasonic sensor 3 collect data in real time and transmit it to the control module 5 during equipment operation. When an abnormal increase in pressure is detected in a certain section of the pipeline or the thickness of the coal sludge exceeds a threshold (e.g., 5cm), the control module 5 determines that there is a blockage. Subsequently, the servo motor 4 is started, which drives the cleaning seat 9 to move along the guide rail 10 to the blockage position via the steel cable 11. After the position sensor feeds back the positioning signal, the control module 5 starts the rotating scraper 8 to rotate and scrape off the coal sludge. The dirt generated during cleaning is discharged into the sludge collection box 7. After cleaning is completed, the cleaning seat 9 is reset. The control module 5 synchronizes the data to the remote terminal through the wireless communication unit to achieve unmanned monitoring.

[0033] This invention achieves automatic detection and self-cleaning of gas extraction pipelines through a four-step closed-loop control system of "monitoring, cleaning, sewage discharge, and feedback," significantly improving the continuity and safety of pipeline operation.

Claims

1. A self-cleaning device for preventing blockage in a gas extraction pipeline network, comprising an extraction pipe (1), characterized in that: The inner wall of the extraction pipe (1) is provided with several sets of blockage monitoring components at intervals along the axial direction. The blockage monitoring components are composed of pressure sensors (2) and ultrasonic sensors (3). The extraction pipe (1) is provided with a self-cleaning component, which includes a cleaning seat (9) that slides along the guide rail (10) and a rotating scraper (8) on its outer side. The outer wall of the extraction pipe (1) is fixed with a drive mechanism (4), which drives the cleaning seat (9) to move through a transmission steel cable (11). The bottom of the extraction pipe (1) is provided with a drain port (6), which is connected to a detachable sludge collection box (7). The outer wall of the extraction pipe (1) is equipped with a control module (5), which is connected to the pressure sensor (2), ultrasonic sensor (3), and drive mechanism (4).

2. The device according to claim 1, characterized in that: The control module (5) integrates a wireless communication unit for transmitting monitoring data and cleaning status to a remote terminal in real time.

3. The device according to claim 1, characterized in that: The guide rail (10) consists of two parallel slide rails, which are symmetrically fixed to the bottom of the inner wall of the extraction tube (1). The top of the cleaning seat (9) is provided with a slider that matches the slide rail.

4. The device according to claim 1, characterized in that: The rotating scraper (8) is made of wear-resistant rubber, with a rotation angle of 0 to 360°, and the rotation speed can be adjusted by the control module (5).

5. The device according to claim 1, characterized in that: The drive mechanism (4) is a servo motor, the transmission steel cable (11) is a high-strength steel cable, and the output end of the servo motor is provided with a drum for winding and unwinding the steel cable.

6. The device according to claim 1, characterized in that: The sludge collection box (7) is equipped with a liquid level sensor, which is electrically connected to the control module (5) to monitor the sewage level and provide sewage discharge reminders.

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