CN-117368436-B - Underground coal mine gas concentration monitoring device and gas concentration control system

CN117368436BCN 117368436 BCN117368436 BCN 117368436BCN-117368436-B

Abstract

The invention relates to the field of monitoring alarm devices, and particularly discloses a coal mine underground gas concentration monitoring device and a gas concentration control system, which comprise an alarm arranged at the top of a gas detector body, a fan connected with one side of the gas detector body in a sealing manner, a connecting pipe connected with one end of the fan in a sealing manner through a flange, and a rectangular pipe connected with the end part of the connecting pipe in a fixed manner; the gas detector is characterized in that a plurality of sealing sleeve frames are arranged, the sealing sleeve frames are vertically and fixedly connected with the bottom tube body of the rectangular tube, the inside of each sealing sleeve frame is slidably connected with a sliding block, one side of each sliding block is provided with an air channel, the guide rails are fixedly connected to the top of the rectangular tube, the lower parts of the guide rails are communicated with the inside of the rectangular tube, the inner walls of the guide rails are slidably connected with sliding mounting seats, the bottoms of the sliding mounting seats are fixedly connected with travelling frames, the bottoms of the travelling frames are rotatably connected with rollers, the rollers are in intermittent type matching rolling connection with the top of each sliding block, and the problem that the monitoring range is small when the existing gas concentration is monitored is solved.

Inventors

LV YOUCHANG
WANG ZHEN
WANG JINQIANG
ZHANG MINGJIE
YANG JIANSHAN
TAO YUNQI
Zhang chuangye
LI HONG
LI ZHENXING
ZHANG FAN
WANG SHENGWEI
GUO BINGBING

Assignees

平顶山天安煤业股份有限公司十二矿
河南工程学院

Dates

Publication Date: 20260512
Application Date: 20231009

Claims (8)

1. The underground coal mine gas concentration monitoring device is characterized by comprising: The gas detector comprises a gas detector body (1), wherein an alarm (2) is arranged at the top of the gas detector body (1), a fan (3) is connected to one side of the gas detector body (1) in a sealing manner, one end of the fan (3) is connected with a connecting pipe (4) in a sealing manner through a flange, and a rectangular pipe (5) is fixedly connected to the end part of the connecting pipe (4); The air duct type air conditioner comprises a plurality of sealing sleeve frames (8), wherein the sealing sleeve frames (8) are vertically and fixedly connected with the bottom pipe body of a rectangular pipe (5), sliding blocks (9) are connected inside the sealing sleeve frames (8) in a sliding mode, and an air duct (18) is formed in one side of each sliding block (9); The guide rail (6), guide rail (6) fixed connection is at rectangular pipe (5) top, and guide rail (6) below and rectangular pipe (5) inside intercommunication, guide rail (6) inner wall sliding connection have slide mounting seat (12), slide mounting seat (12) bottom fixedly connected with crane frame (13), crane frame (13) bottom rotates and is connected with cylinder (15), cylinder (15) and slider (9) top intermittent type formula roll connection; The sealing sleeve is characterized in that a limiting plate (16) is fixedly connected to the bottom of the sealing sleeve frame (8), the whole structure of the limiting plate (16) is 匚 -shaped, a mounting groove (19) is formed in one side, far away from the bottom opening of the air duct (18), of the sliding block (9), the cross section of the mounting groove (19) is of a 匚 -shaped structure, the cross section of the mounting groove is matched with the limiting plate (16) and complements with the mounting groove (19), the limiting plate (16) is in sliding connection with the mounting groove (19), springs (17) are vertically and fixedly connected to the top of the limiting plate (16), the four springs (17) are vertically and evenly distributed above the limiting plate (16), and the top of each spring (17) is in tight contact with the groove wall at the top of the mounting groove (19).
2. The underground coal mine gas concentration monitoring device according to claim 1, wherein a plurality of sealing sleeve frames (8) are distributed at the bottom of the rectangular pipe (5) at equal intervals, sealing treatment is carried out at the joint of the sealing sleeve frames (8) and the rectangular pipe (5), and the sealing sleeve frames (8) are of rectangular frame structures and are used for communicating the inside of the rectangular pipe (5) with the external environment.
3. The underground coal mine gas concentration monitoring device according to claim 1, wherein the sliding block (9) is of a cuboid structure, the side wall of the sliding block (9) is tightly matched with the sealing sleeve frame (8), round corners are formed in two sides, perpendicular to the wiring of the rectangular pipe (5), of the top of the sliding block (9), and the whole top of the sliding block (9) is of an arch structure.
4. The underground coal mine gas concentration monitoring device according to claim 1, wherein the air duct (18) is of an L-shaped structure, the top opening of the air duct (18) is positioned at one side of the top arched surface of the sliding block (9) near the center, and the bottom opening of the air duct (18) is positioned at one side wall of the sliding block (9) near the lower position.
5. The underground coal mine gas concentration monitoring device is characterized in that the guide rail (6) is of a rectangular box-packed structure and is reversely connected to the top of the rectangular pipe (5), reciprocating screw rods (10) are rotatably connected to the end walls of the two ends inside the guide rail (6), a motor (7) is fixedly connected to the outer side of the end wall, close to the fan (3), of the guide rail (6), and one end of each reciprocating screw rod (10) penetrates through the end wall of the guide rail (6) and is fixedly connected with the output end of the motor (7).
6. The underground coal mine gas concentration monitoring device according to claim 1, wherein the sliding mounting seat (12) is provided with a mounting hole which is in threaded connection with the reciprocating screw rod (10), and the sliding mounting seat (12) is in threaded connection with the reciprocating screw rod (10).
7. The underground coal mine gas concentration monitoring device according to claim 1, wherein the travelling crane frame (13) is of an inverted-buckle-shaped 匚 -shaped structure, fixed shafts (14) are vertically and fixedly connected to side walls of two sides of the bottom of the travelling crane frame (13), the roller (15) is rotatably connected with a shaft body of the fixed shafts (14) located at the groove position of the bottom of the travelling crane frame (13), limit strips (11) are fixedly connected to the side walls of the inside of the rectangular pipe (5), the limit strips (11) are arranged in four, the limit strips (11) are matched with each other in pairs to form limit grooves, and the end parts of two ends of the fixed shafts (14) are in sliding connection with the limit grooves formed by the two groups of limit strips (11).
8. A gas concentration control system is characterized by comprising the underground coal mine gas concentration monitoring device according to any one of claims 1-7.

Description

Underground coal mine gas concentration monitoring device and gas concentration control system Technical Field The invention relates to the field of monitoring and alarming devices, in particular to a coal mine underground gas concentration monitoring device and a gas concentration control system. Background In the coal mining work, when in construction, the unavoidable tunneling of an underground mine can pass through a gas area, and once the concentration of the gas in the mine is too high, the explosion is easy to cause safety accidents, so that the monitoring of the gas is particularly important in the coal mining process. Chinese patent CN213298056U discloses a tunnel gas concentration monitoring and early warning device, which comprises a housin, the inner back end of casing is fixed and is provided with the gas pipe, the upper and lower both ends of gas pipe run through the upper and lower both ends of casing respectively, the casing inner is provided with central controller, gas concentration sensor and buzzer, fixedly on the casing front wall is provided with data display screen, gas concentration sensor's sensing end passes through the trachea lateral wall and leads to the gas pipe inner, gas concentration sensor's output and central controller electric connection, central controller's output and buzzer and data display screen's input electric connection. However, when monitoring the gas concentration in the tunnel, the gas monitoring device is usually fixed at one place, and only the gas concentration at the place is monitored, and the monitoring mode can only monitor the gas concentration in a smaller range. Disclosure of Invention The invention aims to provide a coal mine underground gas concentration monitoring device so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the underground coal mine gas concentration monitoring device comprises: the gas detector comprises a gas detector body, wherein an alarm is arranged at the top of the gas detector body, a fan is connected to one side of the gas detector body in a sealing manner, one end of the fan is connected with a connecting pipe in a sealing manner through a flange, and the end part of the connecting pipe is fixedly connected with a rectangular pipe; the sealing sleeve frames are provided with a plurality of sealing sleeve frames, the sealing sleeve frames are vertically and fixedly connected with the rectangular pipe bottom body, the inside of the sealing sleeve frames is connected with a sliding block in a sliding manner, and one side of the sliding block is provided with an air duct; The guide rail, guide rail fixed connection is at rectangular pipe top, and guide rail below and rectangular pipe inside intercommunication, guide rail inner wall sliding connection have a sliding mounting seat, sliding mounting seat bottom fixedly connected with driving frame, driving frame bottom rotation is connected with the cylinder, cylinder and slider top intermittent type formula cooperation roll connection. Preferably, the sealing sleeve frames are distributed at equal intervals at the bottom of the rectangular pipe, sealing treatment is carried out at the joint of the sealing sleeve frames and the rectangular pipe, and the sealing sleeve frames are of rectangular frame body structures and are communicated with the inside of the rectangular pipe and the external environment. Preferably, the slider is cuboid structure, and slider lateral wall and seal cover frame close fit, and the fillet has been seted up with rectangular pipe wiring vertically two sides at slider top, and the slider top is whole to be the arch structure. Preferably, the air duct is of an L-shaped structure, the top opening of the air duct is positioned at one side of the arched surface at the top of the sliding block and is close to the center, and the bottom opening of the air duct is positioned at one side wall of the sliding block and is close to the lower position. Preferably, the seal cover frame bottom fixedly connected with limiting plate, limiting plate overall structure is 匚 style of calligraphy, the mounting groove has been seted up to one side that keeps away from wind channel bottom open-ended on the slider, mounting groove cross-section shape is 匚 style of calligraphy structure equally, and mutually support complementarily with the limiting plate, limiting plate and mounting groove sliding connection. Preferably, the top of the limiting plate is vertically and fixedly connected with springs, the four springs are vertically and uniformly distributed above the limiting plate, and the top of the springs is in close contact with the groove wall at the top of the mounting groove. Preferably, the guide rail is back-off type fixed connection at rectangular pipe top, and the inside both ends end wall rotation of guide rail is connected with reciprocating lead screw, and the guide