Roadway coal wall CO gas release rate measuring device

Abstract

The utility model discloses a device for measuring the CO gas release rate of a roadway coal wall. The device comprises a sealing frame, a fixing assembly, a CO concentration detector, an air inlet air inducing cover and an air outlet air inducing cover, the sealing frame is of a rectangular frame structure with an opening in one side, the sealing frame is fixed to the coal wall through the fixing assembly, the opening side of the sealing frame abuts against the coal wall, and a closed cavity is formed by the sealing frame and the coal wall; an air inlet and an air outlet are formed in the two sides of the sealing frame respectively, the CO concentration detectors are arranged on the two sides of the sealing frame, and the detection ends of the CO concentration detectors on the two sides are located in the air inlet and the air outlet respectively; the air inlet is provided with the air inlet induced draft cover, and the air outlet is provided with the air outlet induced draft cover. The device solves the problem that there is no appropriate measuring device for measuring the CO gas release rate of the roadway coal wall in the prior art.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of CO gas concentration measurement, and particularly relates to a roadway coal wall CO gas release rate measuring device. BACKGROUND

[0002] In the process of developing a roadway in a coal seam, the coal body is broken by mechanical energy and stress of surrounding rock, the exposed coal wall is unstable, and anchor support needs to be carried out by drilling a hole in the coal wall. After the coal is broken under stress, some groups on the surface of coal molecules will be adsorbed with oxygen in the air, and then chemical reaction is carried out to release CO gas. This result has been verified in the laboratory, and the release rate of CO gas can be measured in the laboratory. However, in actual engineering, the stress damage of the coal wall is diverse, there is no unified formula to characterize the CO gas release rate of the roadway coal wall, and there is no measuring device to measure the CO gas release rate of the roadway coal wall, so it is difficult to meet the existing roadway development needs. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the application provides a roadway coal wall CO gas release rate measuring device, and solves the problem that there is no suitable measuring device to measure the CO gas release rate of the roadway coal wall in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model embodiment provides a kind of roadway coal wall CO gas release rate measuring device, including sealing frame, fixed component, CO concentration detector, air inlet air scoop and air outlet air scoop;

[0005] The sealing frame is a rectangular frame structure with one side open, the sealing frame is fixed to the coal wall by the fixed component, the open side of the sealing frame abuts against the coal wall, and the sealing frame and the coal wall form a closed cavity;

[0006] The two sides of the sealing frame are respectively provided with air inlet and air outlet, and the two sides of the sealing frame are provided with the CO concentration detector, and the detection end of the CO concentration detector on the two sides is located in the air inlet and the air outlet respectively;

[0007] The air inlet is provided with the air inlet air scoop, and the air outlet is provided with the air outlet air scoop.

[0008] In a possible implementation manner, the sealing frame includes a limiting frame plate, the limiting frame plate is a rectangular frame structure, and a sealing layer is arranged on the surface of the limiting frame plate away from the coal wall.

[0009] In a possible implementation manner, a reinforcing plate is vertically arranged at the middle part of the limiting frame plate, limiting ropes are arranged on the two sides of the reinforcing plate, and the sealing layer is connected with the reinforcing plate and the limiting ropes.

[0010] In a possible implementation, the material of the limiting frame plate and the reinforcing plate is wood, and the sealing layer is a wind tube cloth.

[0011] In a possible implementation, the fixing assembly comprises a plurality of fastening nails, the plurality of fastening nails are arranged on the periphery of the limiting frame plate, and the limiting frame plate is connected to the coal wall through the fastening nails.

[0012] In a possible implementation, the length of the closed cavity is 2 m, the height is 1 m, and the width is 8 cm.

[0013] In a possible implementation, the width of the air inlet and the air outlet is 2-5 cm.

[0014] In a possible implementation, the air inlet hood and the air outlet hood have the same structure, and the air inlet hood and the air outlet hood each comprise a hood and a mounting seat.

[0015] The hood is a horn-shaped structure, the width of the hood is smaller than the width of the sealing frame, the mounting seat is arranged on the periphery of the small end of the hood, the mounting seat is arranged on the side wall of the sealing frame, and the air passage of the small end of the hood is connected to the air inlet or the air outlet.

[0016] The one or more technical solutions provided in the embodiments of the utility model have at least the following technical effects or advantages:

[0017] The device is installed on the coal wall during use, the airflow of the air return channel enters the closed cavity from the air inlet hood, the CO gas released by the coal wall in the closed cavity is discharged from the air outlet hood along the airflow, the CO concentration detector detects the CO concentration at the air inlet and the air outlet, and then the rate of the CO gas released by the coal wall in the closed cavity can be calculated. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] Figure 1The structural schematic view of the roadway coal wall CO gas release rate measuring device provided by the embodiment one of the utility model.

[0020] Figure 2 The installation schematic view of the roadway coal wall CO gas release rate measuring device provided by the embodiment one of the utility model.

[0021] Figure 3 For Figure 2 The left view.

[0022] Figure 4 The structural schematic view of the roadway coal wall CO gas release rate measuring device provided by the embodiment two of the utility model.

[0023] Figure 5 The arrangement position schematic view of the roadway coal wall CO gas release rate measuring device provided by the embodiment of the utility model in the roadway.

[0024] Reference signs: 1-sealing frame; 2-fixing assembly; 3-coal wall; 4-CO concentration detector; 5-detecting end; 6-inlet air inlet hood; 7-outlet air inlet hood; 8-limiting frame plate; 9-sealing layer; 10-stiffening plate; 11-limiting rope; 12-fastening nail; 13-hood; 14-mounting seat; 15-sleeve; 16-screw rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] In the description of the embodiments of the utility model, it needs to be explained that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0027] As shown in Figures 1 to 5 Embodiments one and two of the utility model provide a roadway coal wall CO gas release rate measuring device, which comprises a sealing frame 1, a fixing assembly 2, a CO concentration detector 4, an air inlet air inlet hood 6 and an air outlet air inlet hood 7.

[0028] The sealing frame 1 is a rectangular frame structure with one side opening, the sealing frame 1 is fixed on the coal wall 3 through the fixing assembly 2, the opening side of the sealing frame 1 abuts against the coal wall 3, and the sealing frame 1 and the coal wall 3 form a closed cavity.

[0029] The two sides of the sealing frame 1 are respectively provided with air inlets and air outlets, and the two sides of the sealing frame 1 are provided with CO concentration detectors 4, and the detection ends 5 of the CO concentration detectors 4 on the two sides are located in the air inlets and the air outlets respectively.

[0030] The air inlet is provided with an air inlet air inlet hood 6, and the air outlet is provided with an air outlet air inlet hood 7.

[0031] It needs to be explained that, when the device is used, the device is installed on the coal wall 3, the device is arranged as shown in Figure 5 The air flow of the air return channel enters the closed cavity from the air inlet air inlet hood 6, the CO gas released by the coal wall 3 in the closed cavity is discharged from the air outlet air inlet hood 7 along with the air flow, and the CO concentration detector 4 detects the CO concentration at the air inlets and the air outlets, so as to calculate the release rate of the CO gas released by the coal wall 3 in the closed cavity. The device utilizes the roadway air flow to calculate the CO gas concentration, and therefore has simple structure and strong practicability. The release rate of the CO gas released by the coal wall 3 obtained by the device can guide the prevention of CO gas poisoning and other events in coal mines.

[0032] In the embodiment, the sealing frame 1 comprises a limiting frame plate 8, which is a rectangular frame structure, and the limiting frame plate 8 is provided with a sealing layer 9 away from the surface of the coal wall 3.

[0033] It should be noted that the sealing frame 1 has a simple structure and is easy to process and manufacture.

[0034] In the embodiment, the middle part of the limiting frame plate 8 is vertically provided with a reinforcing plate 10, the limiting frame plate 8 is provided with a limiting rope 11 on both sides of the reinforcing plate 10, and the sealing layer 9 is connected with the reinforcing plate 10 and the limiting rope 11.

[0035] It should be noted that the reinforcing plate 10 is arranged in a spaced manner with the coal wall 3, and the reinforcing plate 10 is used to improve the strength of the limiting frame plate 8, and the reinforcing plate 10 and the limiting rope 11 are used to support the sealing layer 9.

[0036] In the embodiment, the limiting frame plate 8 and the reinforcing plate 10 are made of wood, and the sealing layer 9 is made of wind tube cloth.

[0037] It should be noted that wood and wind tube cloth are light in weight, easy to process and manufacture, and low in cost.

[0038] In the embodiment, the fixing assembly 2 comprises a plurality of fastening nails 12, the plurality of fastening nails 12 are arranged in a circumferential direction of the limiting frame plate 8, and the limiting frame plate 8 is connected with the coal wall 3 through the fastening nails 12.

[0039] It should be noted that the fastening nail 12 has high installation efficiency and is easy to disassemble.

[0040] In the second embodiment, the fixing assembly 2 further comprises a clamping assembly, the number of the clamping assembly is four, and the four clamping assemblies are respectively located at the upper part and the lower part of the two sides of the sealing frame 1. The clamping assembly comprises a sleeve 15 and a screw rod 16, one end of the sleeve 15 is connected with the sealing frame 1, the other end of the sleeve 15 is threadedly connected with the screw rod 16, the other end of the screw rod 16 is a sharp end, the sharp end is inserted into the roof or the floor of the roadway, and a locking nut is abutted to the screw rod 16 after being screwed into the side wall of the sleeve 15.

[0041] It should be noted that the clamping assembly can further fix the sealing frame 1, so as to avoid loosening or falling of the sealing frame 1.

[0042] In the embodiment, the length of the closed cavity is 2m, the height is 1m, and the width is 8cm.

[0043] It should be noted that the overall thickness of the device is about 10cm, so it does not affect the normal use of the roadway. The length of the closed cavity is 2m 2 The coal wall 3 of the roadway is measured for the CO gas release rate, and the obtained data is convenient for measuring the CO gas release rate of the whole roadway.

[0044] The width of the air inlet and the air outlet is 2-5cm.

[0045] It should be noted that the air inlet and the air outlet are small so as to obtain more accurate data by the CO concentration detector 4.

[0046] In the embodiment, the air inlet and the air outlet have the same structure, and the air inlet and the air outlet each include a hood and a mounting seat.

[0047] The hood is in a horn shape, the width of the hood is less than the width of the sealing frame, the mounting seat is mounted on the periphery of the small end of the hood, the mounting seat is mounted on the side wall of the sealing frame, and the air passage of the small end of the hood is connected with the air inlet or the air outlet.

[0048] It should be noted that the air inlet hood guides the positive airflow into the closed cavity, and the airflow in the tunnel forms a negative pressure at the air outlet hood, thereby guiding the gas in the closed cavity out. The air inlet hood and the air outlet hood can prevent the CO gas from gathering in a large amount and affecting the normal release of the CO gas.

[0049] In the embodiment, it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

Claims

1. A roadway coal wall CO gas release rate measuring device characterised by: The sealed frame (1), the fixed assembly (2), the CO concentration detector (4), the air inlet air guide cover (6) and the air outlet air guide cover (7) are included. The sealed frame (1) is a rectangular frame structure with one side open, and the sealed frame (1) is fixed on the coal wall (3) through the fixed assembly (2), the open side of the sealed frame (1) abuts against the coal wall (3), and the sealed frame (1) and the coal wall (3) form a closed cavity. The sealed frame (1) is provided with an air inlet and an air outlet on both sides, and the sealed frame (1) is provided with the CO concentration detector (4) on both sides, and the detection end (5) of the CO concentration detector (4) on both sides is located in the air inlet and the air outlet respectively. The air inlet is provided with the air inlet air guide cover (6), and the air outlet is provided with the air outlet air guide cover (7).

2. A roadway coal wall CO gas release rate measuring device according to claim 1 characterised in that: The sealed frame (1) includes a limiting frame plate (8), which is a rectangular frame structure, and the surface of the limiting frame plate (8) away from the coal wall (3) is provided with a sealing layer (9).

3. A roadway coal wall CO gas release rate measuring apparatus according to claim 2 characterised in that: The middle part of the limiting frame plate (8) is vertically provided with a reinforcing plate (10), the limiting frame plate (8) is provided with a limiting rope (11) on both sides of the reinforcing plate (10), and the sealing layer (9) is connected with the reinforcing plate (10) and the limiting rope (11).

4. A roadway coal wall CO gas release rate measuring apparatus according to claim 3 characterised in that: The material of the limiting frame plate (8) and the reinforcing plate (10) is wood, and the sealing layer (9) adopts air duct cloth.

5. The gassy roadway coal wall CO gas release rate measuring apparatus according to claim 2, characterized by: The fixed assembly (2) includes a plurality of fastening nails (12), and a plurality of fastening nails (12) are arranged on the circumference of the limiting frame plate (8), and the limiting frame plate (8) is connected with the coal wall (3) through the fastening nails (12).

6. The gassy roadway coal wall CO gas release rate measuring device according to claim 1, characterized by: The length of the closed cavity is 2m, the height is 1m, and the width is 8cm.

7. The gassy roadway coal wall CO gas release rate measuring device according to claim 1, characterized by: The width of the air inlet and the air outlet is 2-5cm.

8. The gassy roadway coal wall CO gas release rate measuring device according to claim 1, characterized by: The air inlet air guide cover (6) and the air outlet air guide cover (7) have the same structure, and the air inlet air guide cover (6) and the air outlet air guide cover (7) each include an air guide cover (13) and a mounting seat (14). The air guide cover (13) is a horn-shaped structure, the width of the air guide cover (13) is less than the width of the sealed frame (1), the mounting seat (14) is mounted on the circumference of the small end of the air guide cover (13), the mounting seat (14) is mounted on the side wall of the sealed frame (1), and the air passage of the small end of the air guide cover (13) is connected with the air inlet or the air outlet.

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