Full-automatic multi-channel coal gas constant-temperature adsorption and desorption simulation test device

Abstract

The utility model relates to the technical field of coal mine gas prevention and control, and discloses a full-automatic multi-channel coal gas constant-temperature adsorption and desorption simulation test device. Comprising a pneumatic assembly, an inflation assembly, an exhaust assembly, a vacuum assembly, a gas assembly, an adsorption assembly, a gas circuit bus assembly, a water bath tank, an environment assembly and an electromagnetic valve control panel. According to the scheme, the desorption tank pressure measuring method is adopted to calculate the coal sample gas desorption amount, the test results of the adsorption stage and the desorption stage can be optimized through environment pressure and environment temperature feedback, the test results are closer to the actual situation, and the method has higher use value. The volume of a test instrument is saved, and the risk of gas leakage in the whole test process is avoided; in addition, the number of channels is increased, so that the time required by a single test can be greatly saved, the test efficiency is improved, and the time cost required by the test is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas prevention and control, in particular to a full-automatic multi-channel coal body gas constant temperature adsorption and desorption simulation test device. Background Art

[0002] The mining of coal resources is often accompanied by dangers. The causes of accidents include roof, water seepage, gas explosion, impact ground pressure, etc. Among them, coal and gas disasters often cause a large number of casualties and property losses; this shows that the hazards of coal and gas outbursts are very large, so the study of outburst indicators applicable to mines is of great significance for preventing outbursts. However, due to the complexity of the coal body structure, there is still no unified consensus on the research on the occurrence mechanism of coal and gas outburst accidents; adsorption and desorption experiments on single mine coal bodies by laboratory means can reflect the characteristics of the coal seam area to a certain extent. However, the existing laboratory desorption test equipment often takes a long time in the test time, and the experimental method of measuring only theoretical data ignores the influence of ambient temperature and atmospheric pressure on the experimental results, which is easy to cause inaccurate experimental results, and the data relies on manual readings and is prone to errors.

[0003] Based on this, a fully automatic multi-channel coal sample adsorption and desorption test device is designed to remedy the above problems. Utility Model Content

[0004] In view of the fact that the existing coal gas constant temperature adsorption and desorption simulation test device takes a long time to test, and the experimental method of only measuring theoretical data ignores the influence of the environment on the experimental results, which easily leads to inaccurate experimental results, the utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device, which can optimize the test results of the adsorption stage and the desorption stage through the feedback of the ambient pressure and ambient temperature, so that the test results are closer to the actual situation.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device, comprising a pneumatic component, an inflation component, an exhaust component, a vacuum component, a degassing component, an adsorption component and an air bus component; the inflation component fills adsorption gas into N groups of adsorption components in parallel through the air bus component, the adsorption component is connected with the degassing component through the air bus component, the vacuum component evacuates the adsorption component through the air bus component, the degassing component and the adsorption component are connected with the exhaust component through the air bus component, and N is a natural number greater than or equal to 1; the pneumatic component provides control gas for each pneumatic ball valve of the inflation component, the exhaust component, the vacuum component, the degassing component, the adsorption component and the air bus component.

[0007] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the pneumatic component includes an air pump inlet, a pressure regulating filter, a pressure switch, a manifold and a solenoid valve; the air pump inlet, the pressure regulating filter, the pressure switch and the manifold are connected in sequence through pipelines, the manifold is electrically connected to the solenoid valve, and the solenoid valve is electrically connected to the solenoid valve control board.

[0008] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the inflation component includes a gas inlet, a first pneumatic ball valve, a high-pressure gas tank and a first pressure acquisition sensor; the gas inlet, the first pneumatic ball valve and the high-pressure gas tank are connected in sequence through pipelines; the first pressure acquisition sensor is installed on the high-pressure gas tank; the solenoid valve provides control gas for the first pneumatic ball valve.

[0009] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the exhaust component includes a gas exhaust port and a second pneumatic ball valve; the gas exhaust port and the second pneumatic ball valve are connected through a pipeline; the solenoid valve provides control gas for the second pneumatic ball valve.

[0010] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the vacuum component includes a vacuum exhaust port and a third pneumatic ball valve; the vacuum exhaust port and the third pneumatic ball valve are connected through a pipeline; the solenoid valve provides control gas for the third pneumatic ball valve.

[0011] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the degassing component includes a degassing tank, a second pressure collection sensor and a fourth pneumatic ball valve; the degassing tank and the fourth pneumatic ball valve are connected by a pipeline; the second pressure collection sensor is installed on the degassing tank; the solenoid valve is connected to the fourth pneumatic ball valve through a pipeline.

[0012] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the adsorption component includes a fifth pneumatic ball valve and an adsorption tank connected by a pipeline; the third pressure acquisition sensor is installed on the pipeline between the fifth pneumatic ball valve and the adsorption tank; the solenoid valve provides control gas for the fifth pneumatic ball valve, and the adsorption tank is placed in a water bath.

[0013] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device of the utility model, wherein: the gas circuit bus assembly includes a sixth pneumatic ball valve and a gas circuit bus;

[0014] The second pneumatic ball valve, the third pneumatic ball valve, the fourth pneumatic ball valve, the fifth pneumatic ball valve and the sixth pneumatic ball valve are all connected to the gas bus through pipelines; the high-pressure gas tank is connected to the gas bus through the sixth pneumatic ball valve; the first pressure acquisition sensor is installed on the pipeline between the high-pressure gas tank and the sixth pneumatic ball valve.

[0015] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, it also includes an environmental component and a solenoid valve control panel; the atmospheric pressure acquisition sensor and the environmental temperature acquisition sensor of the environmental component compensate for the pressure and temperature of the adsorption tank in the environment.

[0016] As a preferred solution of the fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device described in the utility model, wherein: the first pressure acquisition sensor, the second pressure acquisition sensor, the third pressure acquisition sensor, the atmospheric pressure acquisition sensor, the ambient temperature acquisition sensor and the solenoid valve control board are data connected, and the connections have no order of priority.

[0017] Beneficial effects of the utility model: 1. This scheme adopts the desorption tank pressure measurement method to estimate the gas desorption amount of the coal sample, and can optimize the test results of the adsorption stage and the desorption stage through the feedback of the ambient pressure and ambient temperature, so that the test results are closer to the actual situation and more valuable. The volume of the test instrument is saved, and the risk of gas leakage is eliminated during the entire test process.

[0018] This solution increases the number of channels, which can significantly save the time required for a single test, improve test efficiency, and reduce the time cost required for the test.

[0019] , provide abnormal situation handling solutions, improve the emergency handling capabilities of the equipment, and do not need to restart the test from the beginning when a power outage occurs. In addition, this solution uses electronic sensors to obtain the test parameters required for the test throughout the entire process, and can automatically record data and generate test reports, thereby ensuring data accuracy and reducing manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 This is a schematic diagram of the connection structure of a fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device of the utility model;

[0022] Figure 2 This is a gas flow diagram of the utility model in the gas adsorption gas charging stage;

[0023] Figure 3 This is the gas flow diagram of the exhaust stage of the utility model;

[0024] Figure 4 This is the first gas flow diagram of the degassing stage of the utility model

[0025] Figure 5 This is the second gas flow diagram of the degassing stage of the utility model. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1

[0031] Reference Figure 1 , which is the first embodiment of the utility model, provides a fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device, including a pneumatic component 100, an inflation component 200, an exhaust component 300, a vacuum component 400, a degassing component 500, an adsorption component 600 and a gas circuit bus component 700;

[0032] The charging component 200 charges the adsorption gas into the N groups of adsorption components 600 connected in parallel through the gas bus component 700, the adsorption component 600 is connected to the degassing component 500 through the gas bus component 700, the vacuum component 400 evacuates the adsorption component 600 through the gas bus component 700, the degassing component 500 and the adsorption component 600 are connected to the exhaust component 300 through the gas bus component 700, and N is a natural number greater than or equal to 1;

[0033] The pneumatic assembly 100 provides control gas for each pneumatic ball valve of the inflation assembly 200 , the exhaust assembly 300 , the vacuum assembly 400 , the degassing assembly 500 , the adsorption assembly 600 and the gas bus assembly 700 .

[0034] Furthermore, the pneumatic component 100 includes an air pump air inlet 101, a pressure regulating filter 102, a pressure switch 103, a manifold 104 and a solenoid valve 105; the air pump air inlet 101, the pressure regulating filter 102, the pressure switch 103 and the manifold 104 are connected in sequence through pipelines, the manifold 104 is electrically connected to the solenoid valve 105, and the solenoid valve 105 is electrically connected to the solenoid valve control board 1000.

[0035] The gas charging assembly 200 includes a gas inlet 201, a first pneumatic ball valve 202, a high-pressure gas tank 203 and a first pressure collection sensor 204; the gas inlet 201, the first pneumatic ball valve 202 and the high-pressure gas tank 203 are connected in sequence through pipelines; the first pressure collection sensor 204 is installed on the high-pressure gas tank 203;

[0036] The electromagnetic valve 105 provides control gas for the first pneumatic ball valve 202. The exhaust assembly 300 includes a gas exhaust port 301 and a second pneumatic ball valve 302; the gas exhaust port 301 and the second pneumatic ball valve 302 are connected through a pipeline; the electromagnetic valve 105 provides control gas for the second pneumatic ball valve 302.

[0037] The vacuum assembly 400 includes a vacuum suction port 401 and a third pneumatic ball valve 402 ; the vacuum suction port 401 and the third pneumatic ball valve 402 are connected through a pipeline; and the solenoid valve 105 provides control gas for the third pneumatic ball valve 402 .

[0038] The degassing assembly 500 includes a degassing tank 501, a second pressure collection sensor 502 and a fourth pneumatic ball valve 503; the degassing tank 501 and the fourth pneumatic ball valve 503 are connected through a pipeline; the second pressure collection sensor 502 is installed on the degassing tank 501; the solenoid valve 105 is connected to the fourth pneumatic ball valve 503 through a pipeline.

[0039] The adsorption assembly 600 includes a fifth pneumatic ball valve 601 and an adsorption tank 603 connected by a pipeline; the third pressure acquisition sensor 602 is installed on the pipeline between the fifth pneumatic ball valve 601 and the adsorption tank 603; the solenoid valve 105 provides control gas for the fifth pneumatic ball valve 601, and the adsorption tank 603 is placed in a water bath 800.

[0040] The gas circuit bus assembly 700 includes a sixth pneumatic ball valve 701 and a gas circuit bus 702; the second pneumatic ball valve 302, the third pneumatic ball valve 402, the fourth pneumatic ball valve 503, the fifth pneumatic ball valve 601 and the sixth pneumatic ball valve 701 are all connected to the gas circuit bus 702 through pipelines; the high-pressure gas tank 203 is connected to the gas circuit bus 702 through the sixth pneumatic ball valve 701; the first pressure acquisition sensor 204 is installed on the pipeline between the high-pressure gas tank 203 and the sixth pneumatic ball valve 701.

[0041] It also includes an environmental component 900 and a solenoid valve control board 1000; the atmospheric pressure acquisition sensor 901 and the environmental temperature acquisition sensor 902 of the environmental component 900 compensate for the pressure and temperature of the adsorption tank 603 in the environment.

[0042] The first pressure acquisition sensor 204, the second pressure acquisition sensor 502, the third pressure acquisition sensor 602, the atmospheric pressure acquisition sensor 901, the ambient temperature acquisition sensor 902 and the solenoid valve control board 1000 are data connected in no particular order.

[0043] The atmospheric pressure sensor 901 is provided because the pressure acquisition sensor provides relative air pressure data rather than absolute air pressure. The software needs to use the atmospheric pressure sensor 901 to compensate when analyzing the data.

[0044] Furthermore, the measuring range of the first pressure acquisition sensor 204 is -0.1 to 20 MPa, the measuring range of the second pressure acquisition sensor 502 is -0.1 to 10 MPa, and the measuring range of the third pressure acquisition sensor 602 is -100 to 30 KPa.

[0045] When in use, first perform a device test reset, first open the pressure switch 103, and pre-inflate the pneumatic system; close the first pneumatic ball valve 202, the second pneumatic ball valve 302, the third pneumatic ball valve 402, the fourth pneumatic ball valve 503, the fifth pneumatic ball valve 601 and the sixth pneumatic ball valve 701 (hereinafter referred to as all pneumatic ball valves).

[0046] The second step is to enter the vacuum pumping stage of the device: open all pneumatic ball valves, turn on the external vacuum machine to vacuum pump the gas circuit of the device, and further, after reaching the preset vacuum pumping time, close all pneumatic ball valves.

[0047] The third step is to enter the water bath heating stage of the device: according to the preset water bath temperature value, turn on the power supply of the water bath heater and the water bath motor. Furthermore, the host computer reads the current water bath temperature through the water bath temperature sensor. After reaching the preset value, turn off the power supply of the water bath heater. It should be noted that during the entire test process, when the water bath temperature is lower than the preset value, the water bath heater power supply needs to be reconnected. Until the end of the test process, turn off the power supply of the water bath heater and the water bath motor.

[0048] The fourth step is to enter the gas charging stage of the device: the specific operation is to first open the first pneumatic ball valve 202, and the external gas is input from the gas inlet 201 in turn, and the high-pressure gas tank 203 is charged through the first pneumatic ball valve 202. Furthermore, the upper computer reads the pressure value of the high-pressure gas tank 203 through the first pressure acquisition sensor 204, and after reaching the preset pressure value, the first pneumatic ball valve 202 is closed.

[0049] The fifth step is to enter the gas injection stage of the device's adsorption tank: specifically, open the sixth pneumatic ball valve 701 to connect the high-pressure gas tank 203 and the gas bus 702; further, open any fifth pneumatic ball valve 601 in the adsorption assembly 600, and the gas in the high-pressure gas tank 203 is injected into an adsorption tank 603 corresponding to the opened fifth pneumatic ball valve 601 through the gas bus 702.

[0050] Furthermore, the host computer reads the pressure value of the adsorption tank 603 through the third pressure acquisition sensor 602, and after reaching the preset pressure value of the channel, closes the fifth pneumatic ball valve 601 corresponding to the channel.

[0051] The process of injecting high-pressure gas into the remaining channels of the adsorption assembly 600 is the same as the above process, which will not be described in detail here.

[0052] Preferably, after the adsorption tank 603 reaches adsorption equilibrium, the inflation process is repeated to achieve the purpose of multiple adsorptions.

[0053] Step 5: Enter the stage of exhausting the adsorption tank of the device: Specifically, close the sixth pneumatic ball valve 701, disconnect the passage between the high-pressure gas tank 203 and the gas bus 702, and further open the second pneumatic ball valve 302 and any one of the fifth pneumatic ball valves 601 to exhaust the adsorption tank 603. After the preset exhaust time is reached, close the sixth pneumatic ball valve 701.

[0054] Preferably, the device provides two ways to exhaust the adsorption tank 603, namely: 1. preset exhaust time; 2. preset pressure threshold.

[0055] The exhaust process of the remaining channels of the adsorption assembly 600 is the same as the above process and will not be described in detail here.

[0056] Step 6: Enter the degassing stage of the device: Specifically, open the fourth pneumatic ball valve 503 and any one of the fifth pneumatic ball valves 601, so that the degassing tank 501 is connected to the adsorption tank 603 through the gas bus 702, and further, the adsorbed gas in the adsorption tank 603 diffuses into the degassing tank 501 through the gas bus. The upper computer reads the gas pressure value released from the adsorption tank 603 through the second pressure acquisition sensor 502.

[0057] Furthermore, after the pressure value of the second pressure collection sensor 502 is balanced, the fourth pneumatic ball valve 503 and the fifth pneumatic ball valve 601 are closed.

[0058] Preferably, the degassing process of the remaining channels of the adsorption assembly 600 is the same as the above process and will not be described in detail here.

[0059] The last step is to enter the end stage of the device test: specifically, open the second pneumatic ball valve 302, the fourth pneumatic ball valve 503, the sixth pneumatic ball valve 701 and all the fifth pneumatic ball valves 601, so that the gas in the gas circuit is discharged to the outside through the exhaust interface to discharge the remaining gas in the gas circuit.

[0060] Furthermore, after the preset exhaust time is reached, the second pneumatic ball valve 302 , the fourth pneumatic ball valve 503 , the sixth pneumatic ball valve 701 and all the fifth pneumatic ball valves 601 are closed.

[0061] Example 2

[0062] Reference Figures 1 to 5 , which is the second embodiment of the utility model, and this embodiment also includes a device data analysis stage.

[0063] Specifically, the host computer obtains real-time pressure values ​​during the gas injection stage, exhaust stage and degassing stage of the adsorption tank of the device, and simultaneously obtains the corresponding current environmental data through the atmospheric pressure acquisition sensor 901 and the ambient temperature acquisition sensor 902 during this process.

[0064] Furthermore, this scheme uses the desorption tank pressure measurement method to estimate the gas desorption amount of the coal sample, and can optimize the test results of the adsorption stage and the desorption stage through the feedback of the ambient pressure and ambient temperature, so that the test results are closer to the actual situation and more valuable. The volume of the test instrument is saved, and the risk of gas leakage is eliminated during the entire test process.

[0065] Furthermore, this solution sets the number of channels to 4, which can save half of the time required for a single test, improve test efficiency, and reduce the time cost required for the test.

[0066] The above data are converted, filtered, optimized and other technical means to generate gas adsorption and desorption characteristic curves. The above data are saved in the output file for subsequent use.

[0067] Finally, the gas adsorption and desorption characteristic curves generated in the device data analysis phase are combined with the format of the report template to generate a gas adsorption and desorption test report.

[0068] This solution introduces an atmospheric pressure sensor 901 and an ambient temperature sensor 902, which can provide actual environmental parameter compensation for the test data, so that the device can not only measure the coal sample gas adsorption and desorption test parameters under theoretical conditions, but also measure the coal sample gas adsorption and desorption test parameters under actual (non-theoretical) conditions, making the test results more practical. In addition, since a single test process takes a long time, if a power outage occurs during the test, this device can automatically switch to a backup power supply, provide an abnormal situation handling plan, and improve the emergency handling capability of the equipment. When a power outage occurs, there is no need to restart the test from the beginning.

[0069] In addition, this solution uses electronic sensors throughout the entire process to obtain the test parameters required for the test, automatically record data, and generate test reports, thereby ensuring data accuracy and reducing labor intensity, saving current test data, and closing all pneumatic ball valves to further improve the safety of the test in the event of an accident. In addition, the device of this solution can use USB or WIFI to connect to the host computer for data transmission. Compared with the existing PCI-E board solution, the device of this solution has the characteristics of simple disassembly and assembly and diverse connection methods.

[0070] Example 3

[0071] Reference Figures 1 to 5 , which is the third embodiment of the utility model. This embodiment is different from the first embodiment in that it also includes specific product model specifications used in the utility model, as shown in the following table:

[0072]

[0073] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device, characterized in that: It comprises a pneumatic component (100), an inflation component (200), an exhaust component (300), a vacuum component (400), a degassing component (500), an adsorption component (600) and a gas circuit bus component (700); The charging component (200) charges adsorption gas into N groups of adsorption components (600) connected in parallel via the gas bus component (700); the adsorption component (600) is connected to the degassing component (500) via the gas bus component (700); the vacuum component (400) evacuates the adsorption component (600) via the gas bus component (700); the degassing component (500) and the adsorption component (600) are connected to the exhaust component (300) via the gas bus component (700); N is a natural number greater than or equal to 1; The pneumatic component (100) provides control gas for each pneumatic ball valve of the inflation component (200), the exhaust component (300), the vacuum component (400), the degassing component (500), the adsorption component (600) and the gas line bus component (700).

2. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 1 is characterized by: The pneumatic assembly (100) comprises an air pump air inlet (101), a pressure regulating filter (102), a pressure switch (103), a manifold (104) and a solenoid valve (105); The air pump air inlet (101), the pressure regulating filter (102), the pressure switch (103) and the manifold (104) are connected in sequence through pipelines; the manifold (104) is electrically connected to the solenoid valve (105); and the solenoid valve (105) is electrically connected to the solenoid valve control board (1000).

3. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 2 is characterized by: The inflation assembly (200) comprises a gas inlet (201), a first pneumatic ball valve (202), a high-pressure gas tank (203) and a first pressure acquisition sensor (204); The gas inlet (201), the first pneumatic ball valve (202) and the high-pressure gas tank (203) are connected in sequence through pipelines; The first pressure acquisition sensor (204) is installed on the high-pressure gas tank (203); The solenoid valve (105) provides control gas for the first pneumatic ball valve (202).

4. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 3 is characterized by: The exhaust assembly (300) comprises a gas exhaust port (301) and a second pneumatic ball valve (302); The gas exhaust port (301) and the second pneumatic ball valve (302) are connected via a pipeline; The solenoid valve (105) provides control gas for the second pneumatic ball valve (302).

5. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 4 is characterized in that: The vacuum assembly (400) comprises a vacuum suction port (401) and a third pneumatic ball valve (402); The vacuum pumping port (401) and the third pneumatic ball valve (402) are connected via a pipeline; The solenoid valve (105) provides control gas for the third pneumatic ball valve (402).

6. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 5 is characterized by: The degassing assembly (500) comprises a degassing tank (501), a second pressure collection sensor (502) and a fourth pneumatic ball valve (503); The degassing tank (501) and the fourth pneumatic ball valve (503) are connected via a pipeline; The second pressure acquisition sensor (502) is installed on the gas solution tank (501); The solenoid valve (105) is connected to the fourth pneumatic ball valve (503) through a pipeline.

7. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 6 is characterized by: The adsorption assembly (600) comprises a fifth pneumatic ball valve (601) and an adsorption tank (603) which are connected via a pipeline; The third pressure collection sensor (602) is installed on the pipeline between the fifth pneumatic ball valve (601) and the adsorption tank (603); The solenoid valve (105) provides control gas for the fifth pneumatic ball valve (601), and the adsorption tank (603) is placed in the water bath (800).

8. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 7 is characterized by: The gas circuit bus assembly (700) comprises a sixth pneumatic ball valve (701) and a gas circuit bus (702); The second pneumatic ball valve (302), the third pneumatic ball valve (402), the fourth pneumatic ball valve (503), the fifth pneumatic ball valve (601) and the sixth pneumatic ball valve (701) are all connected to the gas circuit bus (702) via pipelines; The high-pressure gas tank (203) is connected to the gas circuit bus (702) via a sixth pneumatic ball valve (701); The first pressure acquisition sensor (204) is installed on the pipeline between the high-pressure gas tank (203) and the sixth pneumatic ball valve (701).

9. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 8 is characterized by: Also includes an environmental component (900) and a solenoid valve control board (1000); The atmospheric pressure acquisition sensor (901) and the ambient temperature acquisition sensor (902) of the environmental component (900) compensate for the pressure and temperature of the adsorption tank (603) in the environment.

10. The fully automatic multi-channel coal gas constant temperature adsorption and desorption simulation test device according to claim 9 is characterized in that: The first pressure acquisition sensor (204), the second pressure acquisition sensor (502), the third pressure acquisition sensor (602), the atmospheric pressure acquisition sensor (901), the ambient temperature acquisition sensor (902) and the solenoid valve control board (1000) are data connected in no particular order.

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