Biological comprehensive prevention and control device with function of simulating disaster gas environment in goaf
By designing a comprehensive biological control device to simulate the gas and temperature environment in the coal mine goaf, the research problem of the relationship between microbial flora and disaster gas is solved, the advantageous flora of rapidly metabolizing disaster gases is found, and the high-pressure geological environment is adapted to the high-pressure geological environment to prevent pollution.
Patent Information
- Application Number
- CN202421907919.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing technology is difficult to simulate the complex gas and temperature environment in coal mine goaf under laboratory conditions, which affects the study of the relationship between microbial flora and disaster gases, resulting in the inability to effectively find the dominant flora that rapidly metabolizes disaster gases.
A comprehensive biological control device was designed, including a temperature control box, reactor, heating equipment, refrigeration equipment, gas chromatograph, etc., to simulate the gas and temperature environment in the goaf area, and to process excess exhaust gas through the exhaust gas treatment equipment, and install a flow meter and pressure gauge to control the gas flow and pressure.
It simulates the complex gas and temperature environment of the goaf under laboratory conditions, helps to find the dominant bacterial flora that rapidly metabolizes disaster gases, prevents external pollution, and adapts to the high-pressure geological environment.
Smart Images
Figure CN223292550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prevention and control devices, in particular to a biological comprehensive prevention and control device capable of simulating the gas environment of disasters in goaf areas. Background Art
[0002] As coal mining depth and intensity increase, the risk of spontaneous combustion in goaf areas increases. Fires can lead to significant waste of coal resources and economic losses. The resulting wind pressure can also affect and disrupt airflow within the mine, causing the disaster to spread. Furthermore, the spontaneous combustion of coal oxidation produces combustible gases such as CH4 and CO, which are explosive and, if accumulated, pose a serious threat to coal mine safety.
[0003] How to simulate the microbial metabolism of hazardous gases in the complex gas environment of goaf under laboratory conditions, master the ability of microbial flora to metabolize hazardous gases, and obtain dominant bacterial flora that can quickly metabolize hazardous gases is of great significance to ensuring safe and green mining of coal mines.
[0004] Therefore, it is necessary to provide a biological integrated prevention and control device that simulates the gas environment of goaf disasters to solve the above technical problems. Utility Model Content
[0005] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a biological integrated prevention and control device that simulates the disaster gas environment of the goaf. It can simulate the complex gas and temperature environment of the goaf, and facilitate the design of experiments on the relationship between biological flora and disaster gases.
[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:
[0007] A biological integrated prevention and control device capable of simulating a gaseous environment in a goaf is provided, comprising: a temperature control box, a reactor installed within the temperature control box, heating and cooling equipment mounted on the temperature control box, an airflow channel within the reactor, at least one airflow channel, a circulating fan and multiple thermal sensors mounted within the airflow channel, the multiple thermal sensors positioned at different depths within the reactor, multiple thermal sensors at the same depth pointing in different directions, the thermal sensors connected to a temperature measuring instrument positioned outside the temperature control box, the temperature measuring instrument mounted distally to the thermal sensors, and the temperature of coal samples within the reactor detected by the multiple thermal sensors. The reactor is equipped with a feed pipe, a liquid outlet pipe, an exhaust pipe, and a return pipe, a gas chromatograph mounted at one end of the exhaust pipe, a return pipe mounted between the exhaust pipe and the return pipe, a first three-way valve mounted between the exhaust pipe and the return pipe, a second three-way valve mounted between the return pipe and the return pipe, an air pump mounted on the return pipe, a connecting pipe mounted at one end of the second three-way valve, and an air generator mounted at one end of the connecting pipe. Valves are mounted on both the feed pipe and the liquid outlet pipe.
[0008] Preferably, an exhaust gas treatment device is installed at one end of the exhaust pipe.
[0009] Preferably, a flow meter is installed on the connecting pipe.
[0010] Preferably, a pressure gauge is installed on the reaction furnace.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] (1) The utility model can conveniently simulate the complex gas and temperature environment of the goaf in the reactor by setting up a temperature control box, a reactor, installing an air generator, a gas chromatograph, a heating device and a refrigeration device, and conveniently conduct experiments on the relationship between biological flora and disaster gases, which is conducive to finding the dominant flora that can quickly metabolize disaster gases;
[0013] (2) The utility model installs an exhaust gas treatment device at one end of the exhaust pipe, and uses the exhaust gas treatment device to perform harmless treatment on the excess exhaust gas, thereby preventing pollution to the outside world;
[0014] (3) The utility model can conveniently calculate the gas flow rate and flow rate into the reactor by installing a flow meter on the connecting pipe;
[0015] (4) The utility model installs a pressure gauge on the reactor to facilitate checking the gas pressure inside the reactor so as to simulate a high-pressure geological environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the front structure of the biological integrated prevention and control device provided by the utility model, which has the function of simulating the gas environment of the goaf disaster;
[0017] Figure 2 for Figure 1 The diagram shows the structure of the reactor in the integrated biological prevention and control device with a simulated goaf disaster gas environment.
[0018] Among them, the names corresponding to the figure marks are: 1-temperature control box, 2-reaction furnace, 3-air generator, 4-gas chromatograph, 5-waste gas treatment equipment, 6-heating equipment, 7-refrigeration equipment, 8-air flow channel, 9-circulation fan, 10-thermal sensor, 11-feed pipe, 12-liquid outlet pipe, 13-exhaust pipe, 14-first three-way valve, 15-reflux pipe, 16-second three-way valve, 17-return air pipe, 18-connecting pipe, 19-flow meter, 20-air pump. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.
[0020] Example 1:
[0021] like Figure 1-2 As shown, the present invention provides a biological integrated prevention and control device with a simulated goaf disaster gas environment, comprising: a temperature control box 1, a reactor 2 installed in the temperature control box 1, a heating device 6 and a cooling device 7 installed on the temperature control box 1, the heating device 6 and the cooling device 7 are respectively used to heat and cool the temperature control box 1, thereby controlling the temperature in the box, thereby simulating the temperature environment of the goaf, a blocking net is installed near the bottom of the reactor 2, the blocking net divides the reactor 2 into two parts, a coal sample is placed on the blocking net, so that the coal sample will not leak, and water and gas can pass through the blocking net normally, and at least one air flow channel 8 is provided in the reactor 2 ( Figure 2Taking multiple air flow channels 8 as an example, the size and position of the air flow channels 8 do not affect the normal flow of gas in the reaction furnace 2. A circulation fan 9 and multiple thermal sensors 10 are installed in the air flow channel 8. The multiple thermal sensors 10 are arranged at different depths of the reaction furnace 2. The multiple thermal sensors 10 at the same depth point in different directions. The thermal sensors 10 are connected to a temperature measuring instrument arranged outside the temperature control box 1, so that a temperature measuring instrument is installed at the far end of the thermal sensor 10. The temperature of the coal sample in the furnace is detected by the multiple thermal sensors 10. To facilitate determining whether the coal sample is heated evenly, the reactor 2 is equipped with a feed pipe 11, a liquid outlet pipe 12, an exhaust pipe 13, and a return pipe 17. A gas chromatograph 4 is installed at one end of the exhaust pipe 13. A return pipe 15 is installed between the exhaust pipe 13 and the return pipe 17. A first three-way valve 14 is installed between the exhaust pipe 13 and the return pipe 15. A second three-way valve 16 is installed between the return pipe 15 and the return pipe 17. An air pump 20 is installed on the return pipe 15. A connecting pipe 18 is installed at one end of the second three-way valve 16. An air generator 3 is installed at one end of the connecting pipe 18. Valves are installed on both the feed pipe 11 and the liquid outlet pipe 12.When in use, open the temperature control box 1 and the reactor 2, put an appropriate amount of coal sample into the reactor 2, the coal sample exceeds the height of the thermal sensor 10, and inject coal seam analysis gas (CH4, CO, etc. used to simulate the composition of various gases in the goaf) into the furnace through the feeding pipe 11, then close the furnace door and the box door, start the heating device 6, heat the air inside the temperature control box 1, and start the circulation fan 9 at the same time, so that the air in the box passes through the air flow channel 8, strengthen the air circulation in the box, and make the coal sample in the reactor 2 more evenly heated (the inside and outside are heated at the same time). The temperature of the coal sample at multiple positions and depths of the coal sample is detected by the thermal sensor 10, which is convenient for judging whether the coal sample is heated evenly. By increasing or decreasing the speed of the circulation fan 9, the local air circulation speed is accelerated or decreased, and the lower or higher temperature parts are heated or cooled, so that the temperature of each point of the coal sample tends to be consistent and the heating is more even. Turn off the air pump 20, turn the first three-way valve 14 and the second three-way valve 16, and start the air generator 3. The air generator 3 processes external air and feeds it into the reactor 2 through the return air pipe 17. The air then enters the gas chromatograph 4 through the exhaust pipe 13. This process simulates the air environment flowing in the goaf. The gas chromatograph 4 measures the composition and concentration of the gases in the furnace every time the coal sample temperature rises by one unit. When the coal sample temperature reaches 180 degrees Celsius, all valves and the circulation fan are closed, sealing the reactor 2 and allowing the coal sample to cool down in a sealed state. After the coal sample temperature drops to the coal mine ambient temperature (underground temperature), a pre-cultured bacterial solution is injected into the reactor 2 through the feed pipe 11 using a syringe, allowing the bacterial solution to contact the coal sample. The gas in the reactor is measured at regular intervals using the gas chromatograph 4, and the bacterial solution discharged from the liquid outlet pipe 12 at the lower end of the reactor is measured using a liquid chromatograph. The measurement data is recorded and analyzed to determine the metabolic patterns of the microorganisms in response to the simulated goaf combustible gas (coal seam desorbed gas) and the patterns of bacterial population changes, thereby identifying suitable bacterial species or populations for use.
[0022] By setting up a temperature control box 1, a reactor 2, installing an air generator 3, a gas chromatograph 4, a heating device 6 and a refrigeration device 7, the complex gas and temperature environment of the goaf can be easily simulated in the reactor 2, which facilitates the design of experiments on the relationship between biological flora and disaster gases, and is conducive to finding dominant flora that can quickly metabolize disaster gases.
[0023] Example 2:
[0024] like Figure 1 As shown, an exhaust gas treatment device 5 is installed at one end of the exhaust pipe 13, and the excess exhaust gas discharged from the exhaust pipe 13 is treated by the exhaust gas treatment device 5 to prevent pollution to the outside world.
[0025] By installing the exhaust gas treatment device 5 at one end of the exhaust pipe 13, the exhaust gas treatment device 5 is used to perform harmless treatment on the excess exhaust gas, thereby preventing pollution to the outside world.
[0026] Example 3:
[0027] like Figure 2 As shown, a flow meter 19 is installed on the connecting pipe 18 , and the flow rate and flow velocity of the gas introduced into the reaction furnace 2 can be conveniently calculated by the flow meter 19 .
[0028] By installing a flow meter 19 on the connecting pipe 18 , the flow rate and flow velocity of the gas introduced into the reaction furnace 2 can be conveniently calculated.
[0029] Example 4:
[0030] A pressure gauge is installed on the reactor 2 to detect the pressure inside the reactor 2, so that air can be introduced into the furnace using the air generator 3 to increase the pressure of the reactor 2 in order to simulate a high-pressure underground environment.
[0031] By installing a pressure gauge on the reactor 2, it is convenient to check the gas pressure in the reactor 2 so as to simulate a high-pressure geological environment.
[0032] Working principle: When in use, first check the air tightness of the device, and feed an appropriate amount of coal sample into the reactor 2 through the feeding port (the feeding port can be set at the top of the reactor 2 or near the top). The coal sample exceeds the height of the thermal sensor 10, and the coal seam analysis gas is injected into the furnace through the feeding pipe 11. Then the furnace door and the box door are closed, and the heating device 6 is started to heat the air inside the temperature control box 1. At the same time, the circulation fan 9 is started to make the air in the box pass through the air flow channel 8, thereby strengthening the air circulation in the box and making the coal sample in the reactor 2 more evenly heated (the inside and outside are heated at the same time). The temperature of the coal sample at multiple positions and depths is detected by the thermal sensor 10, which is convenient for judging whether the coal sample is heated evenly. By increasing or decreasing the rotation speed of the circulation fan 9, the local air circulation speed is accelerated or reduced, thereby causing the lower or higher temperature parts to heat up or cool down, so that the temperature of each point of the coal sample tends to be consistent and the heating is more even.
[0033] The air pump 20 is turned off, the first three-way valve 14 and the second three-way valve 16 are turned, and the air generator 3 is started. The air generator 3 processes the outside air and inputs it into the reactor 2 through the return air pipe 17, and then enters the gas chromatograph 4 through the exhaust pipe 13. This process simulates the air environment flowing in the goaf (the air pump 20 is turned on, and the first three-way valve 14 and the second three-way valve 16 are adjusted to make the gas in the furnace flow along the exhaust pipe 13, the return pipe 15, and the return air pipe 17, thereby simulating the air circulation in a small range under a closed environment). Every time the temperature of the coal sample increases by one temperature unit, the gas composition and concentration in the furnace are detected by the gas chromatograph 4. When the temperature of the coal sample reaches 180 degrees Celsius, all valves and circulation fans are closed to put the reactor 2 in a closed state, so that the coal sample is cooled in a closed state.
[0034] After the temperature of the coal sample drops to the ambient temperature of the coal mine, a syringe is used to inject the pre-cultured bacterial solution into the reactor 2 through the feed pipe 11 so that the bacterial solution contacts the coal sample. The gas in the reactor 2 is detected by the gas chromatograph 4 at regular intervals, and the bacterial solution discharged from the liquid outlet pipe 12 at the lower end of the reactor is detected by the liquid chromatograph. The detection data is recorded and analyzed to obtain the metabolic patterns of microorganisms on the combustible gas (coal seam desorbed gas) in the simulated goaf and the changes in the bacterial community, so as to find the appropriate bacterial species or bacterial community to use.
Claims
1. A biological integrated prevention and control device that simulates the gas environment of goaf disasters, characterized by: include: Temperature control box (1), air generator (3) and gas chromatograph (4); The temperature control box (1) is equipped with a reaction furnace (2), a heating device (6) and a refrigeration device (7); The reactor (2) is provided with an air flow channel (8), a circulation fan (9) and a plurality of thermal sensors (10) are installed in the air flow channel (8), a feed pipe (11), a liquid outlet pipe (12), an exhaust pipe (13) and a return pipe (17) are installed on the reactor (2), one end of the exhaust pipe (13) is connected to the gas chromatograph (4), a return pipe (15) is installed between the exhaust pipe (13) and the return pipe (17), a first three-way valve (14) is installed between the exhaust pipe (13) and the return pipe (15), a second three-way valve (16) is installed between the return pipe (15) and the return pipe (17), an air pump (20) is installed on the return pipe (15), one end of the second three-way valve (16) is installed with a connecting pipe (18), and one end of the connecting pipe (18) is connected to the air generator (3).
2. The biological integrated prevention and control device with a simulated goaf disaster gas environment according to claim 1 is characterized in that: Valves are installed on the feed pipe (11) and the liquid outlet pipe (12).
3. The biological integrated prevention and control device with a simulated goaf disaster gas environment according to claim 1 is characterized in that: An exhaust gas treatment device (5) is installed at one end of the exhaust pipe (13).
4. The biological integrated prevention and control device with a simulated goaf disaster gas environment according to claim 1 is characterized in that: A flow meter (19) is installed on the connecting pipe (18).
5. The biological integrated prevention and control device with a simulated goaf disaster gas environment according to claim 1 is characterized in that: A pressure gauge is installed on the reaction furnace (2).
6. The biological integrated prevention and control device with a simulated goaf disaster gas environment according to claim 1 is characterized in that: A temperature measuring instrument is installed at the far end of the thermal sensor (10).