Mining methane sensor power-off test tool

Abstract

The utility model provides a mining methane sensor power-off test tool comprising a test tool body and a simulation assembly, the upper side of the test tool body is provided with the simulation assembly, and the left side and the right side of the test tool body are respectively welded with a junction box. According to the technical scheme of the utility model, by means of the arrangement of the test tool body, when the simulation assembly simulates that methane gas reaches an over-limit state, the control circuit, the processing circuit and the single-chip microcomputer which are arranged inside the test tool body cooperate with each other, and a power-off signal is transmitted to the power-off controller. The power-off controller connected with the test tool body through the wiring terminal completes a power-off instruction and returns a power-off completion signal to the test tool body, so that the power-off test work when the methane gas exceeds the limit is completed, and the simulation assembly is arranged, so that the concentration environment of the methane gas under the mine can be effectively simulated; therefore, the whole test tool body can effectively complete the power-off test of the methane sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of power-off testing, and particularly relates to a power-off testing tool for a mining methane sensor. Background Art

[0002] Coal mines, coal preparation plants and other production areas have complex conditions. In some poorly ventilated or unventilated areas, gas is very easy to gather, causing the gas concentration to increase. Once the gas concentration reaches a certain concentration, it is easy to cause harm to the workers, endangering their health and life safety. If the gas concentration in the air is between 5.5% and 16%, it will explode when it encounters an open flame, causing serious production safety accidents. Therefore, in coal mine production, it is necessary to strictly monitor the gas concentration in the air. Once it reaches a certain concentration, it is necessary to quickly cut off all non-intrinsically safe electrical equipment in the production area to avoid safety liability accidents.

[0003] In order to ensure the health and life safety of workers in mines, strict requirements are made on power-off conditions in the Coal Mine Safety Regulations and relevant national industry standards. Once the power-off conditions are met, the power must be quickly cut off within 2 seconds to ensure the safety of personnel and equipment. The existing technology lacks relevant power-off test tooling. Therefore, we hope to design a methane sensor power-off test tooling with a new structure to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a power-off test tool for a mining methane sensor to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical scheme: a power-off test tool for a mining methane sensor, comprising: a test tool body and a simulation component, the simulation component is installed on the upper side of the test tool body, and a junction box is welded on the left and right sides of the test tool body respectively;

[0006] Each of the junction boxes is equipped with a plurality of connection terminals.

[0007] A digital display tube is installed on the left front side of the test fixture body, and the simulation component includes a simulation tank, a control part and an adjustment part;

[0008] A control component for controlling the air intake volume is installed on the upper side of the simulation tank, and a regulating component for regulating the methane output volume is installed on the upper end of the control component.

[0009] As a preferred embodiment, the junction box includes a box body and a movable door. The lower side of the box body is designed to be open, and the outer end of the box body is hinged with a movable door that can be movably opened through a hinge.

[0010] As a preferred embodiment, a plurality of vertically aligned magnetic blocks are embedded and fixed on the front inner wall of the movable door, and the front inner wall of the movable door is magnetically connected to the front inner wall of the box body through the magnetic blocks;

[0011] The left and right sides of the test tool body are respectively provided with multiple wiring holes, and the multiple wiring holes for wiring are connected with the lower end of the box body. In actual use, the test tool body is connected to the monitoring system in real time through the wiring terminals on its left side, and the test tool body is connected to the power-off controller through the wiring terminals on its right side. An analog switch is installed on the front side of the test tool body, and the analog switch is connected to the digital display tube. A timer, a control circuit, a processing circuit and a single-chip microcomputer are also installed inside the test tool body, which can ensure that the entire test tool body meets the requirements of simulating the power-off simulation when the methane exceeds the limit in the mine.

[0012] As a preferred embodiment, the simulation tank for simulating a methane concentration environment comprises a tank body 1, a wiring pipe, a methane sensor and a joint pipe, wherein a methane sensor is installed inside the tank body 1;

[0013] A wiring pipe for laying out a methane sensor connection line is arranged on the right side of a lower end of the tank body, and a joint pipe is welded to an upper end of the tank body.

[0014] As a preferred embodiment, the control component includes a solenoid valve, a connecting pipe 1, and a connecting pipe 2, and the lower side of the left end of the solenoid valve is connected to the joint pipe through the connecting pipe 1;

[0015] A second connecting pipe is fixed on the upper side of the left end of the solenoid valve, and the first connecting pipe is communicated with the inside of the second connecting pipe.

[0016] As a preferred embodiment, the adjusting part includes a tank body 2, a docking tube, a guide tube and a movable plug. The middle of the lower side of the tank body 2 is connected to the upper end of the connecting tube 2. A docking tube for connecting to a methane supply tank is welded on the right side of the lower end of the tank body 2. The setting of the adjusting part enables the operator to inject a certain amount of methane gas into the simulation tank as needed.

[0017] As a preferred embodiment, a piston is movably installed inside the second tank body, a guide tube is welded to the upper end of the second tank body, the guide tube is slidably connected to the lower end of the adjusting rod, and the lower end of the adjusting rod is threadedly connected to the middle of the upper end of the piston.

[0018] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by setting the test fixture body, when the simulation component simulates that the methane gas reaches an over-limit state, the control circuit, processing circuit and single-chip microcomputer set inside the test fixture body cooperate to transmit the power-off signal to the power-off controller, and the power-off controller connected to the test fixture body through the wiring terminal completes the power-off instruction, and returns the power-off completion signal to the test fixture body, thereby completing the power-off test when the methane gas exceeds the limit;

[0019] The setting of the simulation components can effectively simulate the methane gas concentration environment underground in the mine, so that the entire test tool body can effectively complete the power-off test of the methane sensor. After the test is completed, all the methane gas in tank body two is pressed into tank body one, and then the external methane recovery and suction equipment is connected to the docking pipe, and then the piston is pulled back to allow the methane gas in tank body one to be sucked away. The closed tank body one and tank body two can prevent methane gas leakage, making the entire test tool body more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of a power-off test tool for a methane sensor for mining.

[0022] Figure 2 The utility model is a schematic diagram of a movable door structure of a power-off testing tool for a methane sensor used in a mine.

[0023] Figure 3 The utility model is a schematic diagram of a simulation component structure of a power-off test tool for a methane sensor used in a mine.

[0024] Figure 4 The utility model is a schematic diagram of the connection between the adjustment rod and the piston of a power-off test tool for a mining methane sensor.

[0025] In the figure, 100 is a test tool body, 110 is a junction box, 111 is a box body, 112 is a movable door, 113 is a magnetic block, and 120 is a digital display tube;

[0026] 200-simulation component, 210-simulation tank, 211-tank body 1, 212-wiring pipe, 213-connecting pipe, 220-control part, 221-solenoid valve, 222-connecting pipe 1, 223-connecting pipe 2, 230-adjusting part, 231-butt joint pipe, 232-tank body 2, 233-guide pipe, 234-adjusting rod, 235-piston. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 4 The utility model provides a technical solution: a power-off test tool for a mining methane sensor, comprising: a test tool body 100 and a simulation component 200, the simulation component 200 is installed on the upper side of the test tool body 100, and a junction box 110 is welded on the left and right sides of the test tool body 100;

[0029] Each junction box 110 is equipped with a plurality of connection terminals.

[0030] A digital display tube 120 is installed on the left front side of the test tool body 100, and the simulation component 200 includes a simulation tank 210, a control component 220 and an adjustment component 230;

[0031] A control component 220 for controlling the air intake amount is installed on the upper side of the simulation tank 210 , and a regulating component 230 for adjusting the methane output amount is installed on the upper end of the control component 220 .

[0032] See also Figures 1 to 3 The junction box 110 includes a box body 111 and a movable door 112. The lower side of the box body 111 is designed to be open, and the outer end of the box body 111 is hinged with a movable door 112 that can be opened.

[0033] A plurality of vertically aligned magnetic blocks 113 are embedded and fixed on the front inner wall of the movable door 112, and the front inner wall of the movable door 112 is magnetically connected to the front inner wall of the box body 111 through the magnetic blocks 113;

[0034] The left and right sides of the test tool body 100 are respectively provided with multiple wiring holes, and the multiple wiring holes for wiring are connected to the lower end of the box body 111. In actual use, the test tool body 100 is connected to the monitoring system in real time through the wiring terminals on its left side, and the test tool body 100 is connected to the power-off controller through the wiring terminals on its right side. An analog switch is installed on the front side of the test tool body 100, and the analog switch is connected to the digital display tube 120. A timer, a control circuit, a processing circuit and a single-chip microcomputer are also installed inside the test tool body 100, which can ensure that the entire test tool body 100 meets the requirements of simulating the power-off simulation of excessive methane in the mine.

[0035] As the first embodiment of the utility model, by setting the test tool body 100, in actual use, if wiring or maintenance is required, the movable door 112 connected by magnetic force allows the user to easily open the movable door 112 by simply pulling it outward, which is convenient for subsequent users to carry out wiring and maintenance, greatly improving the convenience of use of the device;

[0036] When the simulation component 200 simulates that the methane gas reaches an over-limit state, the control circuit, processing circuit and single-chip microcomputer arranged inside the test fixture body 100 work together (the solenoid valve 221 opens the methane gas to enter the tank with the methane sensor. After the methane sensor detects that the methane reaches a certain concentration, that is, when it is over-limit, the methane sensor transmits the detected data to the single-chip microcomputer in real time. When the single-chip microcomputer receives and determines that the methane concentration exceeds the limit, it sends a power-off signal to the control circuit. The control circuit controls the power-off controller connected to the right side of the device through the wiring terminal to power off. At the same time, the analog switch turns on the timer start signal, the timer starts timing, and displays the timing value on the digital display tube 120 until the power-off controller feeds back the power-off command. The timer can measure the time from when the power-off occurs to when the power-off controller returns the power-off command, thereby judging whether the system meets the power-off condition. The left side of the device The wiring terminal is connected to an external monitoring system and can communicate with the monitoring system in real time, and can transmit the information of the power-off test tool to the monitoring system in a timely manner) The power-off signal is transmitted to the power-off controller, and the power-off controller connected to the test tool body 100 through the wiring terminal completes the power-off instruction, and returns the power-off completion signal to the test tool body 100, thereby completing the methane gas over-limit power-off test (the above-mentioned monitoring system, power-off controller, control circuit, processing circuit and single-chip microcomputer all use existing mining power-off components to ensure the authenticity of the test. Their specific structure, connection method and signal transmission are all existing technologies and will not be repeated here. At the same time, the digital display tube 120, analog switch, wiring terminal and timer mentioned above all use product models available on the market, which can be selected according to actual testing needs. They are not limited to a specific model, as long as they are applicable).

[0037] See also Figure 1 , Figure 3 as well as Figure 4 The simulation tank 210 for simulating a methane concentration environment includes a tank body 211, a wiring tube 212, a methane sensor and a joint tube 213, and a methane sensor is installed inside the tank body 211;

[0038] A wiring tube 212 for laying out the methane sensor connection line is provided on the right side of the lower end of the tank body 1 211 , and a joint tube 213 is welded to the upper end of the tank body 1 211 .

[0039] The control member 220 includes a solenoid valve 221, a connecting pipe 1 222, and a connecting pipe 223. The lower side of the left end of the solenoid valve 221 is connected to the joint pipe 213 through the connecting pipe 1 222.

[0040] A second connecting pipe 223 is fixed to the upper side of the left end of the solenoid valve 221 , and the first connecting pipe 222 is communicated with the inside of the second connecting pipe 223 .

[0041] The adjusting part 230 includes a tank body 232, a docking pipe 231, a guide pipe 233 and a movable plug. The middle of the lower side of the tank body 232 is connected to the upper end of the connecting pipe 223. A docking pipe 231 for connecting to a methane supply tank is welded on the right side of the lower end of the tank body 232. The setting of the adjusting part 230 enables the operator to inject a certain amount of methane gas into the simulation tank 210 as needed.

[0042] A piston 235 is movably installed inside the second tank body 232. A guide tube 233 is welded to the upper end of the second tank body 232. The guide tube 233 is slidably connected to the lower end of the adjusting rod 234. The lower end of the adjusting rod 234 is threadedly connected to the middle of the upper end of the piston 235.

[0043] As a second embodiment of the utility model, based on the above-mentioned first embodiment, the setting of the simulation component 200 is simulated. In actual use, when the methane sensor over-limit power-off test is required, the external methane supply tank is first connected to the docking pipe 231 on the lower side of the second tank body 232, and then methane gas is transported to the inside of the second tank body 232. The solenoid valve 221 is opened according to demand, and the methane gas in the second tank body 232 enters the inside of the first tank body 211 through the connecting pipe 223, the solenoid valve 221 and the connecting pipe 1 222;

[0044] If it is necessary to speed up the speed at which methane enters tank body 1 211, the adjusting rod 234 located on the upper side of tank body 232 can be manually pressed. The downward movement of the adjusting rod 234 will drive the piston 235 to compress the methane gas in tank body 232, allowing it to quickly enter the interior of tank body 1 211, which can effectively simulate the methane gas concentration environment under the mine, so that the entire test tool body 100 can effectively complete the power-off test of the methane sensor. After the test is completed, all the methane gas in tank body 232 is pressed into tank body 1 211, and then the external methane recovery and suction equipment is connected to the docking pipe 231, and then the piston 235 is pulled back to allow the methane gas in tank body 1 211 to be sucked away. The sealed tank body 1 211 and tank body 2 232 can prevent the leakage of methane gas, making the entire test tool body 100 more environmentally friendly.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power-off test tool for a mining methane sensor, comprising: A test fixture body (100) and a simulation component (200), characterized in that the simulation component (200) is installed on the upper side of the test fixture body (100), and a junction box (110) is welded on the left and right sides of the test fixture body (100); Each of the junction boxes (110) is internally installed with a plurality of connection terminals. A digital display tube (120) is installed on the left front side of the test tool body (100), and the simulation component (200) includes a simulation tank (210), a control component (220) and an adjustment component (230); A control component (220) for controlling the air intake volume is installed on the upper side of the simulation tank (210), and a regulating component (230) for regulating the methane output volume is installed on the upper end of the control component (220).

2. A power-off test tool for a mining methane sensor as claimed in claim 1, characterized in that: The junction box (110) comprises a box body (111) and a movable door (112); the lower side of the box body (111) is designed to be open, and the outer end of the box body (111) is hinged with a movable door (112) that can be movably opened via a hinge.

3. A power-off test tool for a mining methane sensor as claimed in claim 2, characterized in that: A plurality of vertically aligned magnetic blocks (113) are embedded and fixed on the front inner wall of the movable door (112); the front inner wall of the movable door (112) is magnetically connected to the front inner wall of the box body (111) via the magnetic blocks (113); The left side and the right side of the test fixture body (100) are respectively provided with a plurality of wiring holes facing outwards, and the plurality of wiring holes for wiring are connected to the lower end of the box body (111).

4. A power-off test tool for a mining methane sensor as claimed in claim 1, characterized in that: The simulation tank (210) for simulating a methane concentration environment comprises a tank body (211), a wiring pipe (212), a methane sensor and a joint pipe (213), wherein the methane sensor is installed inside the tank body (211); A wiring tube (212) for laying out a methane sensor connection line is provided on the right side of the lower end of the tank body 1 (211), and a joint tube (213) is welded to the upper end of the tank body 1 (211).

5. A power-off test tool for a mining methane sensor as claimed in claim 4, characterized in that: The control component (220) comprises a solenoid valve (221), a connecting pipe 1 (222), and a connecting pipe 2 (223); the lower side of the left end of the solenoid valve (221) is connected to the joint pipe (213) through the connecting pipe 1 (222); A second connecting pipe (223) is fixed on the upper left end of the solenoid valve (221), and the first connecting pipe (222) is in communication with the interior of the second connecting pipe (223).

6. A power-off test tool for a mining methane sensor as claimed in claim 5, characterized in that: The regulating member (230) comprises a second tank body (232), a butt joint pipe (231), a guide pipe (233) and a movable plug. The middle of the lower side of the second tank body (232) is connected to the upper end of the second connecting pipe (223). A butt joint pipe (231) for connecting to a methane supply tank is welded to the right side of the lower end of the second tank body (232).

7. A power-off test tool for a mining methane sensor as claimed in claim 6, characterized in that: A piston (235) is movably installed inside the second tank body (232), a guide tube (233) is welded to the upper end of the second tank body (232), the guide tube (233) is slidably connected to the lower end of the adjustment rod (234), and the lower end of the adjustment rod (234) is threadedly connected to the middle of the upper end of the piston (235).

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