Temperature-adjustable gas desorption coal sample tank

Abstract

A temperature-adjustable gas desorption coal sample tank comprises a tank body and a tank cover matched with the upper end of the tank body, and a gas outlet with a valve is formed in the top of the tank cover; the tank body is provided with two layers, copper powder is filled between the outer wall of the tank body and the inner wall of the tank body, spiral grooves are uniformly formed in the outer wall of the tank body from top to bottom, the resistance wire is uniformly wound in the spiral grooves, one end of the resistance wire is connected with the resistance wire temperature regulator, and the resistance wire temperature regulator can control the temperature of the resistance wire; the thermocouples are evenly arranged in the copper powder from top to bottom along the tank body, the adjacent thermocouples are connected in series through wires, and one end of each thermocouple is connected with a thermocouple temperature displayer through a wire. The coal sample gas desorption device is simple in structure and convenient in temperature regulation, the temperature of the tank body is visualized, and the temperature can be controlled in the coal sample gas desorption process through linkage of the resistance wire temperature regulator and the thermocouple temperature display.

Description

Technical Field

[0001] The utility model relates to a gas desorption coal sample tank, in particular to a temperature-adjustable gas desorption coal sample tank, belonging to the technical field of coal sample gas content determination. Background Art

[0002] In the process of determining the gas content of coal seams underground, coal sample cans are widely used in coal mines. Coal samples are usually collected by drilling holes using a drill rig underground to obtain the coal samples to be tested. During the forward drilling process of the drill rig, the friction between the drill rod and the coal wall generates a large amount of heat. Before the coal sample is collected in the coal sample can, it will be affected by the high temperature of the drill rod and desorb part of the gas, resulting in inaccurate final determination of the gas content in the coal seam. Therefore, in order to obtain quantitative data on the impact of high temperature on coal sample gas desorption during the drilling process, it is necessary to design a temperature-adjustable gas desorption coal sample can. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a temperature-adjustable gas desorption coal sample tank with simple structure, convenient temperature adjustment, and visualized tank temperature. Through the linkage of a resistance wire temperature regulator and a thermocouple temperature display, temperature control can be achieved during the coal sample gas desorption process.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a temperature-adjustable gas desorption coal sample tank, comprising a tank body and a tank cover adapted to the upper end of the tank body, and also comprising a resistance wire, a thermocouple, a thermocouple temperature display, and a resistance wire temperature regulator. An air outlet with a valve is arranged on the top of the tank cover; the tank body is arranged to be double-layered, and copper powder is filled between the outer wall and the inner wall of the tank body, spiral grooves are evenly arranged from top to bottom along the outer wall of the tank body, the resistance wire is evenly wound in the spiral grooves, one end of the resistance wire is connected to the resistance wire temperature regulator, and the resistance wire temperature regulator can control the temperature of the resistance wire; the thermocouples are evenly arranged in the copper powder along the tank body from top to bottom, and adjacent thermocouples are connected in series with wires, and one end of the thermocouple is connected to the thermocouple temperature display through the wire.

[0005] In order to provide a uniform heat source for the coal sample tank, the outer diameter of the resistance wire of the utility model is matched with the width of the spiral groove.

[0006] In order to improve the accuracy of tank temperature measurement, the utility model sets the number of spiral grooves to n, n = [L / 4], where L is the height of the tank; the number of thermocouples arranged vertically along the tank is set to a, a = [L / 7], and the number of thermocouples arranged horizontally along the bottom of the tank is set to b, b = [R / 5], where R is the diameter of the tank.

[0007] Compared with the prior art, the utility model sets the tank body as a double-layer, and copper powder is filled between the outer wall and the inner wall of the tank body, spiral grooves are evenly arranged along the outer wall of the tank body from top to bottom, the resistance wire is evenly wound in the spiral grooves, and the thermocouples are evenly arranged in the copper powder along the tank body from top to bottom, and adjacent thermocouples are connected in series with wires, and one end of the thermocouple is connected to the thermocouple temperature display through the wire; the utility model adopts a double-layer coal sample tank with grooves, and uses an adjustable temperature resistance wire as a heat source, copper powder as a heat transfer medium, and a thermocouple as a temperature sensor, and realizes the purpose of temperature control during coal sample gas desorption through the linkage of a resistance wire temperature regulator and a thermocouple temperature display. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model;

[0009] Figure 2 yes Figure 1 Sectional view of the tank body.

[0010] In the figure: 1. air outlet, 2. valve, 3. tank cover, 4. inner wall of tank, 5. outer wall of tank, 6. resistance wire, 7. spiral groove, 8. wire, 9. thermocouple temperature display, 10. resistance wire temperature regulator, 11. copper powder, 12. thermocouple, 13. tank body. DETAILED DESCRIPTION

[0011] The utility model will be further described below in conjunction with the accompanying drawings.

[0012] like Figure 1 and Figure 2 As shown, a temperature-adjustable gas desorption coal sample tank comprises a tank body 13 and a tank cover 3 adapted to the upper end of the tank body 13, the tank cover 3 is tightly matched with the upper end opening of the tank body 13 to prevent gas leakage during the desorption of coal sample gas; the utility model also comprises a resistance wire 6, a thermocouple 12, a thermocouple temperature display 9, and a resistance wire temperature regulator 10, and an air outlet 1 with a valve 2 is arranged on the top of the tank cover 3; in order to fill the heat transfer medium copper powder 11 between the outer wall 5 of the tank body and the inner wall 4 of the tank body so that the inner wall 4 of the tank body is evenly heated, the utility model sets the tank body 13 as a double-layer, and the outer wall 5 of the tank body and the inner wall 4 of the tank body are connected to each other. Copper powder 11 is filled between the walls 4, spiral grooves 7 are evenly arranged along the outer wall 5 of the tank body from top to bottom, resistance wire 6 is evenly wound in the spiral groove 7, the outer diameter of the resistance wire 6 is adapted to the width of the spiral groove 7, one end of the resistance wire 6 is connected to a resistance wire temperature regulator 10, in order to provide a temperature-adjustable heat source for the coal sample tank, the resistance wire temperature regulator 10 of the utility model is capable of controlling the temperature of the resistance wire 6; thermocouples 12 are evenly arranged in the copper powder 11 along the tank body from top to bottom, and adjacent thermocouples 12 are connected in series with wires 8, and one end of the thermocouple 12 is connected to a thermocouple temperature display 9 via the wire 8.

[0013] The number of layers of the spiral groove 7 of the utility model is n, n = [L / 4], wherein L is the height of the tank body 13, the number of thermocouples 12 arranged vertically along the tank body is a, a = [L / 7], the number of thermocouples 12 arranged at the bottom of the tank body is b, b = [R / 5], wherein R is the diameter of the tank body.

[0014] When the utility model is in use, the specific operations are as follows:

[0015] First, load the coal sample into the tank body 13, then fasten the tank cover 3 on the tank body 13, connect the valve 2 on the gas outlet 1 to the gas content measuring device, evenly wind the resistance wire 6 in the spiral groove 7 of the tank body 13, open the valve 2, control the resistance wire temperature regulator 10, increase the temperature of the resistance wire 6, observe the reading of the thermocouple temperature display 9, and obtain the temperature of the tank body 13, thereby controlling the temperature of the tank body 13 through the linkage of the resistance wire temperature regulator 10 and the thermocouple temperature display 9.

[0016] The utility model has a simple structure, adopts a double-layer coal sample tank with grooves, an adjustable temperature resistance wire 6 as a heat source, copper powder 11 as a heat transfer medium, and a thermocouple 12 as a temperature sensor. The temperature adjustment is convenient, and the temperature of the tank body 13 is visualized. Through the linkage of the resistance wire temperature regulator 10 and the thermocouple temperature display 9, the purpose of temperature control during the coal sample gas desorption process is achieved.

Claims

1. A temperature-adjustable gas desorption coal sample tank, comprising a tank body (13) and a tank cover (3) adapted to the upper end of the tank body (13), characterized in that: The invention also comprises a resistance wire (6), a thermocouple (12), a thermocouple temperature display (9), and a resistance wire temperature regulator (10); an air outlet (1) with a valve (2) is arranged on the top of the tank cover (3); the tank body (13) is arranged to be double-layered, and copper powder (11) is filled between the tank body outer wall (5) and the tank body inner wall (4); spiral grooves (7) are evenly arranged from top to bottom along the tank body outer wall (5); the resistance wire (6) is evenly wound in the spiral grooves (7); one end of the resistance wire (6) is connected to the resistance wire temperature regulator (10); and the resistance wire temperature regulator (10) can control the temperature of the resistance wire (6); the thermocouples (12) are evenly arranged in the copper powder (11) along the tank body from top to bottom, and adjacent thermocouples (12) are connected in series by wires (8); one end of the thermocouple (12) is connected to the thermocouple temperature display (9) through the wire (8).

2. The temperature-adjustable gas desorption coal sample tank according to claim 1, characterized in that: The outer diameter of the resistance wire (6) is matched with the width of the spiral groove (7).

3. The temperature-adjustable gas desorption coal sample tank according to claim 2, characterized in that: The number of layers of the spiral groove (7) is n, where n=[L / 4], wherein L is the height of the tank body (13).

4. The temperature-adjustable gas desorption coal sample tank according to claim 3, characterized in that: The number of thermocouples (12) arranged vertically along the tank body is a, where a=[L / 7], and the number of thermocouples (12) arranged at the bottom of the tank body is b, where b=[R / 5], where R is the diameter of the tank body.

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