CN115201282A - Methane sensor detection system and use method - Google Patents
Methane sensor detection system and use method Download PDFInfo
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- CN115201282A CN115201282A CN202210896121.3A CN202210896121A CN115201282A CN 115201282 A CN115201282 A CN 115201282A CN 202210896121 A CN202210896121 A CN 202210896121A CN 115201282 A CN115201282 A CN 115201282A
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- methane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
Abstract
The invention discloses a methane sensor detection system and a using method, relates to the technical field of methane sensors, and solves the technical problem of low detection efficiency of a manual detection mode of a catalytic combustion type methane sensor.
Description
Technical Field
The invention relates to the technical field of methane sensors, in particular to the technical field of a methane sensor detection system.
Background
The methane sensor is a component used for monitoring methane concentration in a coal mine safety monitoring system, and can be fixedly arranged at a coal mine roadway, a mining working face, a goaf, an air return roadway, an electromechanical chamber and the like on one hand, and workers such as coal mine underground operators, methane detection personnel, underground managers and the like can carry about to use on the other hand, and when the methane concentration exceeds the limit, an audible and visual alarm can be automatically sent out.
At present, a methane sensor for a coal mine safety monitoring system is mainly a catalytic combustion methane sensor based on a catalytic combustion principle, the catalytic combustion methane sensor usually needs to be subjected to quality inspection before leaving a factory, the existing quality inspection is mainly carried out in a manual mode, the inspection efficiency is low, and inspection errors exist.
Disclosure of Invention
The invention aims to: the invention provides a methane sensor detection system, which aims to solve the technical problem of low detection efficiency of a manual detection mode of a catalytic combustion type methane sensor.
The invention specifically adopts the following technical scheme for realizing the purpose:
methane sensor detecting system, including ratio case, gaseous appearance and the control box of annotating, ratio case intercommunication has two air inlet pipeline, all is equipped with one-way solenoid valve on every air inlet pipeline, and one air inlet pipeline intercommunication has the high-pressure air holding vessel, and another air inlet pipeline is connected with the high-pressure methane holding vessel, gaseous appearance and the one-way solenoid valve electricity of annotating is connected, the collection component has been placed to ratio incasement, be equipped with a plurality of methane sensors that wait to detect on the collection component, ratio case intercommunication has the methane analysis appearance, methane analysis appearance and gaseous appearance electricity of annotating are connected, be equipped with the controller in the control box, controller and collection component electricity are connected, controller and methane analysis appearance electricity are connected.
Further, the device also comprises an upper computer, and the upper computer is electrically connected with the controller.
Further, the upper computer is electrically connected with a display.
Further, the methane concentration of the high pressure methane storage tank was 99.99%.
The use method of the methane sensor detection system comprises the following steps:
(1) Preheating a methane sensor to be detected, and acquiring initial output voltage of the methane sensor by an acquisition element and sending the initial output voltage to a controller;
(2) The gas sample injection instrument, the proportioning box and the methane analyzer are matched to complete the gas distribution work of the proportioning box;
(3) The acquisition element acquires the real-time output voltage of the methane sensor and sends the real-time output voltage to the controller;
(4) The methane analyzer detects the methane concentration of the proportioning box and sends the detection result to the controller;
(5) The controller calculates to obtain a detection result of the methane sensor according to the real-time output voltage and the initial output voltage;
(6) The controller compares the detection result of the methane sensor with the detection result of the methane analyzer;
(7) The gas sample injector controls a one-way electromagnetic valve on an air inlet pipeline connected with the high-pressure methane storage tank, so that the one-way electromagnetic valve is closed after being opened for a period of time;
(8) Repeating steps (3) - (7) at least twice;
(9) And (4) judging whether the methane sensor is qualified or not according to the multiple comparison results in the step (6), if the multiple comparisons are equal, determining that the methane sensor is qualified, and if not, determining that the methane sensor is unqualified. .
Specifically, the one-way electromagnetic valve is opened for a period of time so as to increase the concentration of methane in the proportioning tank, so that the detection capability of the methane sensor in the methane environment with different concentrations can be tested.
Further, the opening time of the one-way solenoid valve was 30s.
Further, the initial output voltage and the real-time output voltage are sent to the upper computer through the controller, the upper computer calculates the detection result of the methane sensor according to the real-time output voltage and the initial output voltage, then the detection result of the methane sensor is compared with the detection result of the methane analyzer, and then whether the methane sensor is qualified or not is judged according to multiple comparison results.
The invention has the following beneficial effects:
(1) The output voltages of the plurality of methane sensors are collected through the collecting element, the methane concentration detection result of the methane sensors is calculated, the detection result is compared with the detection result of a standard methane analyzer, if the detection result is equal to the detection result of the standard methane analyzer, the methane sensors are qualified, so that the plurality of methane sensors are detected at one time, the comparison of the detection results is completed through the controller or the upper computer, the degree of manual participation is reduced, the working efficiency is improved, and meanwhile, the detection error is reduced;
(2) The detection results of the methane sensors in the methane environments with different concentrations are detected, so that the detection error is further reduced, and the yield of factory products is guaranteed.
Drawings
FIG. 1 is a schematic view of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, this embodiment provides a methane sensor detecting system, including ratio case, gaseous appearance and the control box of annotating, ratio case intercommunication has two air inlet pipeline, all is equipped with one-way solenoid valve on every air inlet pipeline, and one air inlet pipeline intercommunication has the high-pressure air holding vessel, and another air inlet pipeline is connected with the high-pressure methane holding vessel, gaseous appearance and the one-way solenoid valve electricity of annotating is connected, the collection component has been placed to the ratio incasement, be equipped with a plurality of methane sensors that wait to detect on the collection component, ratio case intercommunication has the methane analyzer, methane analyzer and gaseous appearance electricity of annotating are connected, be equipped with the controller in the control box, controller and collection component electricity are connected, controller and methane analyzer electricity are connected, and is concrete, and gaseous appearance control one-way solenoid valve is annotated to control high-pressure air and high-pressure methane's input volume.
Preferably, the system also comprises an upper computer, wherein the upper computer is electrically connected with the controller and adopts a PC computer.
Preferably, the upper computer is electrically connected with a display.
Preferably, the high pressure methane storage tank has a methane concentration of 99.99%.
Preferably, the controller adopts SIMATIC 300, the acquisition element is ET200SP, ET200SP communication module, AI module, DQ module, DI module and server module, the communication module is equipped with a plurality of analog input modules, every analog input module and methane sensor correspond and connect for the output voltage of acquisition methane sensor, the DQ module includes the digital quantity module, the digital quantity module is connected with the one-way solenoid valve electricity, is used for controlling the one-way solenoid valve.
The use method of the methane sensor detection system comprises the following steps:
(1) Preheating a methane sensor to be detected, and acquiring initial output voltage of the methane sensor by an acquisition element and sending the initial output voltage to a controller;
(2) The gas sample injection instrument, the proportioning box and the methane analyzer are matched to complete the gas distribution work of the proportioning box;
(3) The acquisition element acquires the real-time output voltage of the methane sensor and sends the real-time output voltage to the controller;
(4) The methane analyzer detects the methane concentration of the proportioning box and sends the detection result to the controller;
(5) The controller calculates to obtain a detection result of the methane sensor according to the real-time output voltage and the initial output voltage;
(6) The controller compares the detection result of the methane sensor with the detection result of the methane analyzer;
(7) The gas sample injector controls a one-way electromagnetic valve connected with an air inlet pipeline of the high-pressure methane storage tank, so that the one-way electromagnetic valve is opened for a period of time and then is closed;
(8) Repeating steps (3) - (7) at least twice;
(9) And (5) judging whether the methane sensor is qualified or not according to the multiple comparison results in the step (6), if the multiple comparisons are equal, determining that the methane sensor is qualified, otherwise, determining that the methane sensor is unqualified. .
Specifically, the one-way electromagnetic valve is opened for a period of time so as to increase the concentration of methane in the proportioning tank, and the detection capability of the methane sensor in the methane environment with different concentrations can be tested.
Preferably, the opening time of the one-way solenoid valve is 30s.
Preferably, the initial output voltage and the real-time output voltage are sent to the upper computer through the controller, the upper computer calculates a detection result of the methane sensor according to the real-time output voltage and the initial output voltage, then the detection result of the methane sensor is compared with a detection result of the methane analyzer, and then whether the methane sensor is qualified or not is judged according to multiple comparison results.
The working principle is as follows: the output voltages of the plurality of methane sensors are acquired through the acquisition element, the controller or the upper computer is adopted to calculate the methane concentration detection result of the methane sensors, the detection result is compared with the detection result of a standard methane analyzer, if the detection result is equal to the detection result of the standard methane analyzer, the methane sensors are qualified, so that the plurality of methane sensors are detected at one time, the comparison of the detection results is completed through the controller or the upper computer, the degree of manual participation is reduced, the working efficiency is improved, and meanwhile, the inspection error is reduced; the detection results of the methane sensors in the methane environments with different concentrations are detected, so that the detection error is further reduced, and the yield of factory products is guaranteed.
Claims (5)
1. The methane sensor detection system is characterized by comprising a proportioning box, a gas sample injection instrument and a control box, wherein the proportioning box is communicated with two gas inlet pipelines, each gas inlet pipeline is provided with a one-way solenoid valve, one gas inlet pipeline is communicated with a high-pressure air storage tank, the other gas inlet pipeline is connected with the high-pressure methane storage tank, the gas sample injection instrument is electrically connected with the one-way solenoid valves, a collecting element is placed in the proportioning box and provided with a plurality of methane sensors to be detected, the proportioning box is communicated with a methane analyzer, the methane analyzer is electrically connected with the gas sample injection instrument, a controller is arranged in the control box and electrically connected with the collecting element, and the controller is electrically connected with the methane analyzer.
2. The methane sensor detection system according to claim 1, further comprising an upper computer, said upper computer being electrically connected to the controller.
3. The methane sensor detection system of claim 2, wherein a display is electrically connected to the host computer.
4. A methane sensor testing system according to any of the claims 1-3 wherein the high pressure methane storage tank has a methane concentration of 99.99%.
5. The use method of the methane sensor detection system is characterized by comprising the following steps:
(1) Preheating a methane sensor to be detected, and acquiring initial output voltage of the methane sensor by an acquisition element and sending the initial output voltage to a controller;
(2) The gas sample injection instrument, the proportioning box and the methane analyzer are matched to complete the gas distribution work of the proportioning box;
(3) The acquisition element acquires the real-time output voltage of the methane sensor and sends the real-time output voltage to the controller;
(4) The methane analyzer detects the methane concentration of the proportioning box and sends the detection result to the controller;
(5) The controller calculates to obtain a detection result of the methane sensor according to the real-time output voltage and the initial output voltage;
(6) The controller compares the detection result of the methane sensor with the detection result of the methane analyzer;
(7) The gas sample injector controls a one-way electromagnetic valve on an air inlet pipeline connected with the high-pressure methane storage tank, so that the one-way electromagnetic valve is closed after being opened for a period of time;
(8) Repeating steps (3) - (7) at least twice;
(9) And (4) judging whether the methane sensor is qualified or not according to the multiple comparison results in the step (6), if the multiple comparisons are equal, determining that the methane sensor is qualified, and if not, determining that the methane sensor is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896121.3A CN115201282A (en) | 2022-07-27 | 2022-07-27 | Methane sensor detection system and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896121.3A CN115201282A (en) | 2022-07-27 | 2022-07-27 | Methane sensor detection system and use method |
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| Publication Number | Publication Date |
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| CN115201282A true CN115201282A (en) | 2022-10-18 |
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| CN202210896121.3A Pending CN115201282A (en) | 2022-07-27 | 2022-07-27 | Methane sensor detection system and use method |
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| CN (1) | CN115201282A (en) |
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- 2022-07-27 CN CN202210896121.3A patent/CN115201282A/en active Pending
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