Method for detecting residual harmful gas protection capability of carbon layer based on built-in sampling gas path

Abstract

The invention discloses a device and a method for detecting residual gas defense capability of a carbon layer based on a built-in sampling gas circuit, an adsorption unit of the device comprises N sampling probes, the N sampling probes are suitable for sampling gas in an area where the probes are located, the depths of carbon layers where the probes are located are different, and atmosphere concentrations under different carbon layer depths can be measured; the carbon zero gas adsorption module is suitable for carrying out zero calibration on the detection module, so that the detection module can obtain a stable relative baseline value at the beginning of each detection period; the sampling gas path control module is suitable for controlling each gas path and the adsorbed carbon zero gas module to periodically form a path with the detection module so as to circularly detect the atmosphere concentration under different carbon layer depths; and the detection module is suitable for detecting the atmosphere concentration under different carbon layer depths, so that a fitted curve is formed to lay a foundation for subsequent calculation, and the test efficiency and the reliability of the sensor are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of target gas detection, and in particular relates to a device and method for detecting the residual anti-poisoning ability of a carbon layer based on a built-in sampling gas path. Background Art

[0002] In recent years, factory workers have been poisoned by harmful gases frequently. On the premise of personal protection, strict requirements are also required for the filtering effect of the environment. Although large gas filter canisters currently have excellent filtering capabilities for harmful gases in open spaces, with continuous use, the protective performance of the adsorption layer will gradually decrease, and eventually reach the threshold and be penetrated.

[0003] At present, there is a built-in probe detection method, that is, the sensor is directly inserted into the protective layer to detect the atmosphere concentration in the current area. However, this method has some disadvantages. When the sensor is inserted into the protective layer for a long time, due to the influence of the environment on the sensor, the sensor needs to be heated for a period of time before it starts working to desorb the impurities adsorbed on the surface, resulting in a long preheating time, which will affect the adaptability of use in actual application. At the same time, the zero point of the metal oxide semiconductor sensor itself drifts with the influence of environmental, temperature and other factors. The zero point cannot be determined in the built-in detection mode, resulting in inaccurate detection results. Therefore, it is urgent to develop a detection device that can solve the above-mentioned problems. A detection method is proposed for the detection of the residual filtering capacity of the filter. Summary of the invention

[0004] The present invention provides a device and method for detecting the residual anti-poisoning ability of a carbon layer based on a built-in sampling gas path, which determines the zero point by sampling and avoids excessive impurity adsorption in the sensor by means of an external sensor, thereby shortening the preheating time.

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] The embodiment of the present invention provides a device for detecting the residual anti-toxic ability of a carbon layer based on a built-in sampling gas circuit, comprising an adsorption unit, a filtering unit, a sampling gas circuit control module, an adsorption carbon zero gas module and a detection module; a carbon layer is installed in the adsorption unit, the filtering unit is connected to the adsorption unit, the adsorption unit comprises N sampling probes, the N sampling probes are connected to the sampling gas circuit control module through N gas circuits, and N is a positive integer ≥ 1; the adsorption carbon zero gas module is connected to the sampling gas circuit control module through a zero gas gas circuit, and the sampling gas circuit control module is connected to the detection module;

[0007] N sampling probes are suitable for sampling the gas in the area where the probes are located. Each probe is located at a different carbon layer depth, and can measure the atmosphere concentration at different carbon layer depths; the adsorbed carbon zero gas module is suitable for performing zero point calibration on the detection module, so that the detection module can obtain a stable relative baseline value at the beginning of each detection cycle; the sampling gas path control module is suitable for controlling each gas path and the adsorbed carbon zero gas module to periodically form a passage with the detection module, so as to realize cyclic detection of the atmosphere concentration at different carbon layer depths; the detection module is suitable for detecting the atmosphere concentration at different carbon layer depths, thereby forming a fitting curve to pave the way for subsequent calculations.

[0008] In an optional embodiment of the present invention, the detection module includes an air pump, a failure warning chip chamber, a power module and a working status indication module; the failure warning chip chamber is connected to the sampling gas path control module through an air inlet, the failure warning chip chamber is connected to the air pump through an air path, and the power module supplies power to the air pump, the failure warning chip chamber and the working status indication module; wherein the air pump is used to quickly extract sampling gas, the failure warning chip in the failure warning chip chamber provides a stable detection environment, and the working status indication module visualizes the detection status of the device.

[0009] In an optional embodiment of the present invention, the sampling gas circuit control module includes a switch control module and a gas circuit switching valve, N sampling probes are connected to the gas circuit switching valve through N gas circuits, the gas circuit switching valve is connected to the detection module through the gas circuit, and the switch control module is used to open or close the gas circuit switching valve.

[0010] In an optional embodiment of the present invention, the N sampling probes are 6 sampling probes, and the N gas paths are 6 gas paths; the first to sixth sampling probes are connected to the sampling gas path control module through the first to sixth gas paths, respectively.

[0011] In an optional embodiment of the present invention, the gas circuit switching valve includes first to sixth cut-off electromagnetics and first to sixth three-way joints; the first sampling probe is connected to the first three-way joint through the first cut-off electromagnetic, and the second sampling probe is connected to the first three-way joint through the second cut-off electromagnetic; the third sampling probe is connected to the second three-way joint through the third cut-off electromagnetic, and the fourth sampling probe is connected to the second three-way joint through the fourth cut-off electromagnetic; the fifth sampling probe is connected to the third three-way joint through the fifth cut-off electromagnetic, and the sixth sampling probe is connected to the third three-way joint through the sixth cut-off electromagnetic; the adsorbed carbon zero gas module is connected to the fifth three-way joint through the seventh cut-off electromagnetic;

[0012] The first three-way connector and the second three-way connector are connected to the sixth three-way connector through the fourth three-way connector, the third three-way connector is connected to the sixth three-way connector through the fifth three-way connector, and the sixth three-way connector is connected to the detection module.

[0013] In an optional embodiment of the present invention, the switch control module is used to open or close the first to sixth cut-off solenoids, and the first to sixth cut-off solenoids are channel rotary switching valves, external pilot air control valves and air switching valves.

[0014] The embodiment of the present invention further provides a method for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas path, which is implemented by using a device for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas path of the above embodiment, and includes the following steps:

[0015] Step 1: First install the sampling probe in the adsorption unit, then install the carbon layer in the adsorption unit, then connect the sampling gas path control module and the detection module with each sampling probe, turn on the device switch to start working;

[0016] Step 2: The sampling gas circuit control module turns on the switch of the zero gas circuit, and the air pump in the detection module extracts gas from the adsorbed carbon zero gas module. The gas enters the failure warning chip chamber in the detection module, and performs zero point calibration on the failure warning chip. After 10 seconds of extraction, the sampling gas circuit control module controls the zero gas circuit to close.

[0017] Step 3: The sampling gas circuit control module turns on the switch of the sixth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the sixth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the sixth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0018] Step 4: The sampling gas circuit control module turns on the switch of the fifth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fifth sampling probe is located, and the gas enters the failure warning chip chamber in the detection module. The failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fifth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0019] Step 5: The sampling gas circuit control module turns on the switch of the fourth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fourth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fourth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0020] Step 6: The sampling gas circuit control module turns on the switch of the third gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the third sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the third gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0021] Step 7: The sampling gas circuit control module turns on the switch of the second gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the second sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the second gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0022] Step 8: The sampling gas circuit control module turns on the switch of the first gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the first sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the first gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0023] Step 9, looping through steps 2 to 8, the detection module summarizes the atmosphere concentrations of each step to derive a concentration fitting curve.

[0024] In an optional embodiment of the present invention, the types of gases detected by the failure warning chip include ammonia, hydrogen sulfide, and benzene series, and the detected gas concentration range includes ppb level concentration, ppm level concentration, and percentage level concentration.

[0025] Compared with the prior art, the embodiment of the present invention provides a device and method for detecting the residual anti-poison ability of the carbon layer based on the built-in sampling gas path, which has the following beneficial effects: the probe scheme of the present invention is lower in cost than the built-in probe scheme, because the external probe first installs the purely structural gas path into the filter absorber and then installs the carbon, and the insertion detection will destroy the uniformity of the carbon layer, so it has good applicability with the filter absorber; in the external scheme, the difference between each gas path is reflected by using the difference in detection signals, so the detection can be started without waiting for the sensor to be preheated and stabilized, and an absolute baseline value is not required, so it has better penetration start detection capability; the external probe can avoid the problem of long-term insertion into the protective layer causing the front sensor to adsorb a large amount of harmful gas molecules, thereby prolonging the sensor's response time, thereby greatly improving the test efficiency and sensor reliability; the external scheme only requires a single sensor, and the probability of failure is much lower than the probability of failure of a multi-path sensor probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments or 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a device for detecting the remaining anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application.

[0028] Figure 2 A schematic diagram of a detection module of a device for detecting the remaining anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application.

[0029] Figure 3 A schematic diagram of a sampling gas circuit control module of a device for detecting the remaining anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application.

[0030] Figure 4 A schematic diagram of a device for detecting the remaining anti-poisoning ability of a carbon layer based on six built-in sampling gas paths provided in an embodiment of the present application.

[0031] Figure 5 A schematic diagram of a sampling gas path control module of a device for detecting the remaining anti-poisoning ability of a carbon layer based on six built-in sampling gas paths provided in an embodiment of the present application.

[0032] Figure 6 A flow chart of a method for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application.

[0033] Figure 7 The original data of the detection results of a device for detecting the remaining anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application.

[0034] Figure 8 A fitting curve of detection results of a device for detecting the residual anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] like Figure 1As shown, an embodiment of the present invention provides a device for detecting the residual anti-toxic ability of a carbon layer based on a built-in sampling gas circuit, comprising an adsorption unit, a filtration unit, a sampling gas circuit control module, an adsorption carbon zero gas module and a detection module; a carbon layer is installed in the adsorption unit, the filtration unit is connected to the adsorption unit, the adsorption unit comprises N sampling probes, the N sampling probes are connected to the sampling gas circuit control module through N gas circuits, and N is a positive integer ≥ 1; the adsorption carbon zero gas module is connected to the sampling gas circuit control module through a zero gas gas circuit, and the sampling gas circuit control module is connected to the detection module.

[0037] N sampling probes are suitable for sampling the gas in the area where the probes are located. Each probe is located at a different carbon layer depth, and can measure the atmosphere concentration at different carbon layer depths; the adsorbed carbon zero gas module is suitable for performing zero point calibration on the detection module, so that the detection module can obtain a stable relative baseline value at the beginning of each detection cycle; the sampling gas path control module is suitable for controlling each gas path and the adsorbed carbon zero gas module to periodically form a passage with the detection module, so as to realize cyclic detection of the atmosphere concentration at different carbon layer depths; the detection module is suitable for detecting the atmosphere concentration at different carbon layer depths, thereby forming a fitting curve to pave the way for subsequent calculations.

[0038] like Figure 2 As shown, the detection module includes an air pump, a failure warning chip chamber, a power module and a working status indication module; the failure warning chip chamber is connected to the sampling gas circuit control module through an air inlet, the failure warning chip chamber is connected to the air pump through an air circuit, and the power module supplies power to the air pump, the failure warning chip chamber and the working status indication module; wherein the air pump is used to quickly extract the sampling gas, the failure warning chip in the failure warning chip chamber provides a stable detection environment, and the working status indication module visualizes the detection status of the current device. The types of gases detected by the failure warning chip include ammonia, hydrogen sulfide, and benzene series, and the detected gas concentration range includes ppb level concentration, ppm level concentration, and percentage level concentration.

[0039] like Figure 3 As shown, the sampling gas circuit control module includes a switch control module and a gas circuit switching valve, N sampling probes are connected to the gas circuit switching valve through N gas circuits, the gas circuit switching valve is connected to the detection module through the gas circuit, and the switch control module is used to open or close the gas circuit switching valve.

[0040] Figure 4 Combination Figure 1 , N sampling probes are 6 sampling probes, and N gas paths are 6 gas paths; the first to sixth sampling probes are connected to the sampling gas path control module through the first to sixth gas paths respectively.

[0041] Figure 5 Combination Figure 4 and Figure 3 The gas circuit switching valve includes the first to sixth cut-off electromagnetics and the first to sixth three-way joints; the first sampling probe is connected to the first three-way joint through the first cut-off electromagnetic, and the second sampling probe is connected to the first three-way joint through the second cut-off electromagnetic; the third sampling probe is connected to the second three-way joint through the third cut-off electromagnetic, and the fourth sampling probe is connected to the second three-way joint through the fourth cut-off electromagnetic; the fifth sampling probe is connected to the third three-way joint through the fifth cut-off electromagnetic, and the sixth sampling probe is connected to the third three-way joint through the sixth cut-off electromagnetic; the adsorbed carbon zero gas module is connected to the fifth three-way joint through the seventh cut-off electromagnetic; the first three-way joint and the second three-way joint are connected to the sixth three-way joint through the fourth three-way joint, the third three-way joint is connected to the sixth three-way joint through the fifth three-way joint, and the sixth three-way joint is connected to the detection module.

[0042] The switch control module is used to open or close the first to sixth cut-off electromagnetics, which are channel rotary switching valves, external pilot air control valves and air switching valves.

[0043] The working process of the device of the present invention is as follows: first, a carbon layer is installed on the adsorption unit, the zero gas circuit is opened, and the gas in the adsorption carbon zero gas module is extracted by pumping, and the detection module is calibrated at zero point. After 10 seconds of air extraction, the sampling gas circuit control module controls the zero gas circuit to be closed, and then the sampling gas circuit control switch controls the gas circuit N to be opened, and the gas in the adsorption unit is sucked by pumping. The gas enters the detection module for detection. After 10 seconds of air extraction, the sampling gas circuit control module controls the gas circuit N to be closed, and then, the same working method is adopted until all sampling probes have completed collection, and finally a concentration fitting curve is obtained based on the response atmosphere concentration obtained by the above gas circuits.

[0044] The device of this embodiment is as follows Figure 4 and Figure 5 As shown, the six sampling probes and the adsorbed carbon zero gas module are connected to the corresponding cut-off solenoid valves, and the switch control module is used to control the regulation of each cut-off solenoid valve, so as to achieve the effect of periodically and automatically switching each gas path. Then the other end of each cut-off solenoid valve is connected with a multi-stage three-way connector to achieve multi-port input and single-port output, and the sample gas of different sampling gas paths is passed into the detection module through one gas path.

[0045] like Figure 6 As shown, an embodiment of the present invention provides a method for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas path, which is implemented by a device for detecting the remaining anti-poison capability of a carbon layer based on six built-in sampling gas paths, and includes the following steps:

[0046] Step 1: First install the sampling probe on the adsorption unit, install the carbon layer on the adsorption unit, then connect the sampling gas path control module and the detection module with each sampling probe, turn on the device switch to start working;

[0047] Step 2: The sampling gas circuit control module turns on the switch of the zero gas circuit, and the air pump in the detection module extracts gas from the adsorbed carbon zero gas module. The gas enters the failure warning chip chamber in the detection module, and performs zero point calibration on the failure warning chip. After 10 seconds of extraction, the sampling gas circuit control module controls the zero gas circuit to close.

[0048] Step 3: The sampling gas circuit control module turns on the switch of the sixth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the sixth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the sixth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0049] Step 4: The sampling gas circuit control module turns on the switch of the fifth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fifth sampling probe is located, and the gas enters the failure warning chip chamber in the detection module. The failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fifth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0050] Step 5: The sampling gas circuit control module turns on the switch of the fourth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fourth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fourth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0051] Step 6: The sampling gas circuit control module turns on the switch of the third gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the third sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the third gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0052] Step 7: The sampling gas circuit control module turns on the switch of the second gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the second sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the second gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0053] Step 8: The sampling gas circuit control module turns on the switch of the first gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the first sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the first gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth.

[0054] Step 9, looping through steps 2 to 8, the detection module summarizes the atmosphere concentrations of each step to derive a concentration fitting curve.

[0055] Preferably, the types of gases detected by the failure warning chip include ammonia, hydrogen sulfide, and benzene series, and the detected gas concentration range includes ppb level concentration, ppm level concentration, and percentage level concentration.

[0056] Based on the above steps, take a period of resistance data such as Figure 7 As shown, R0 is the resistance change result after extracting gas from gas path 7, R6 is the resistance change result after extracting gas from gas path 6, R5 is the resistance change result after extracting gas from gas path 5, R4 is the resistance change result after extracting gas from gas path 4, R3 is the resistance change result after extracting gas from gas path 3, R2 is the resistance change result after extracting gas from gas path 2, and R1 is the resistance change result after extracting gas from gas path 1. According to the resistance change results, the fitting curve of the current carbon layer atmosphere concentration and the carbon layer depth is obtained as follows: Figure 8 As shown, the remaining protection capability of the carbon layer can be judged based on the current fitting curve.

[0057] Although the present invention has been described according to a limited number of embodiments, it will be apparent to those skilled in the art, with the benefit of the above description, that other embodiments may be envisioned within the scope of the invention thus described. In addition, it should be noted that the language used in this specification is selected primarily for readability and teaching purposes, rather than for explaining or defining the subject matter of the present invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, not restrictive, with respect to the scope of the present invention being defined by the appended claims.

Claims

1. A device for detecting the residual anti-poisoning ability of a carbon layer based on a built-in sampling gas path, characterized in that: It includes an adsorption unit, a filtration unit, a sampling gas circuit control module, a carbon adsorption zero gas module and a detection module; a carbon layer is installed in the adsorption unit, the filtration unit is connected to the adsorption unit, the adsorption unit includes N sampling probes, the N sampling probes are connected to the sampling gas circuit control module through N gas circuits, and N is a positive integer ≥ 1; the carbon adsorption zero gas module is connected to the sampling gas circuit control module through a zero gas gas circuit, and the sampling gas circuit control module is connected to the detection module; N sampling probes are suitable for sampling the gas in the area where the probes are located. Each probe is located at a different carbon layer depth, and can measure the atmosphere concentration at different carbon layer depths; the adsorbed carbon zero gas module is suitable for performing zero point calibration on the detection module, so that the detection module can obtain a stable relative baseline value at the beginning of each detection cycle; The sampling gas path control module is suitable for controlling each gas path and the adsorbed carbon zero gas module to periodically form a passage with the detection module to realize cyclic detection of the atmosphere concentration at different carbon layer depths; the detection module is suitable for detecting the atmosphere concentration at different carbon layer depths, thereby forming a fitting curve to pave the way for subsequent calculations.

2. The device for detecting the residual anti-poisoning ability of the carbon layer based on the built-in sampling gas circuit according to claim 1 is characterized in that: The detection module includes an air pump, a failure warning chip chamber, a power module and a working status indication module; the failure warning chip chamber is connected to the sampling gas path control module through an air inlet, the failure warning chip chamber is connected to the air pump through an air path, and the power module supplies power to the air pump, the failure warning chip chamber and the working status indication module; wherein the air pump is used to quickly extract sampling gas, the failure warning chip in the failure warning chip chamber provides a stable detection environment, and the working status indication module visualizes the detection status of the device.

3. The device for detecting the residual anti-poisoning ability of the carbon layer based on the built-in sampling gas circuit according to claim 2 is characterized in that: The sampling gas circuit control module includes a switch control module and a gas circuit switching valve. N sampling probes are connected to the gas circuit switching valve through N gas circuits. The gas circuit switching valve is connected to the detection module through the gas circuit. The switch control module is used to open or close the gas circuit switching valve.

4. The device for detecting the residual anti-poisoning ability of the carbon layer based on the built-in sampling gas circuit according to claim 3 is characterized in that: The N sampling probes are 6 sampling probes, and the N gas paths are 6 gas paths; the first to the sixth sampling probes are connected to the sampling gas path control module through the first to the sixth gas paths respectively.

5. The device for detecting the residual anti-poisoning ability of the carbon layer based on the built-in sampling gas circuit according to claim 4 is characterized in that: The gas circuit switching valve includes the first to sixth cut-off electromagnetics and the first to sixth three-way joints; the first sampling probe is connected to the first three-way joint through the first cut-off electromagnetic, and the second sampling probe is connected to the first three-way joint through the second cut-off electromagnetic; the third sampling probe is connected to the second three-way joint through the third cut-off electromagnetic, and the fourth sampling probe is connected to the second three-way joint through the fourth cut-off electromagnetic; the fifth sampling probe is connected to the third three-way joint through the fifth cut-off electromagnetic, and the sixth sampling probe is connected to the third three-way joint through the sixth cut-off electromagnetic; the adsorbed carbon zero gas module is connected to the fifth three-way joint through the seventh cut-off electromagnetic; The first three-way connector and the second three-way connector are connected to the sixth three-way connector through the fourth three-way connector, the third three-way connector is connected to the sixth three-way connector through the fifth three-way connector, and the sixth three-way connector is connected to the detection module.

6. The device for detecting the residual anti-poisoning ability of the carbon layer based on the built-in sampling gas circuit according to claim 5 is characterized in that: The switch control module is used to open or close the first to sixth cut-off electromagnetics, which are channel rotary switching valves, external pilot air control valves and air switching valves.

7. A method for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas path, implemented by using the device for detecting the remaining anti-poison capability of a carbon layer based on a built-in sampling gas path as claimed in claim 6, characterized in that: The following steps are involved: Step 1: First install the sampling probe in the adsorption unit, then install the carbon layer in the adsorption unit, then connect the sampling gas path control module and the detection module with each sampling probe, turn on the device switch to start working; Step 2: The sampling gas circuit control module turns on the switch of the zero gas circuit, and the air pump in the detection module extracts gas from the adsorbed carbon zero gas module. The gas enters the failure warning chip chamber in the detection module, and performs zero point calibration on the failure warning chip. After 10 seconds of extraction, the sampling gas circuit control module controls the zero gas circuit to close. Step 3: The sampling gas circuit control module turns on the switch of the sixth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the sixth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the sixth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 4: The sampling gas circuit control module turns on the switch of the fifth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fifth sampling probe is located, and the gas enters the failure warning chip chamber in the detection module. The failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fifth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 5: The sampling gas circuit control module turns on the switch of the fourth gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the fourth sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the fourth gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 6: The sampling gas circuit control module turns on the switch of the third gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the third sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the third gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 7: The sampling gas circuit control module turns on the switch of the second gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the second sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the second gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 8: The sampling gas circuit control module turns on the switch of the first gas circuit, and the air pump in the detection module extracts gas from the carbon layer area where the first sampling probe is located. The gas enters the failure warning chip chamber in the detection module, and the failure warning chip detects the gas. After 10 seconds of extraction, the sampling gas circuit control module controls the first gas circuit to close, and the detection module obtains the atmosphere concentration at the current carbon layer depth. Step 9, looping through steps 2 to 8, the detection module summarizes the atmosphere concentrations of each step to derive a concentration fitting curve.

8. A method for detecting the residual anti-poisoning ability of a carbon layer based on a built-in sampling gas circuit according to claim 7, characterized in that: The types of gases detected by the failure warning chip include ammonia, hydrogen sulfide, and benzene series, and the detected gas concentration range includes ppb level concentration, ppm level concentration, and percentage level concentration.

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