CN212207288U - Methane detecting instrument stability test device - Google Patents
Methane detecting instrument stability test device Download PDFInfo
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- CN212207288U CN212207288U CN202020951945.2U CN202020951945U CN212207288U CN 212207288 U CN212207288 U CN 212207288U CN 202020951945 U CN202020951945 U CN 202020951945U CN 212207288 U CN212207288 U CN 212207288U
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Abstract
The utility model discloses a methane detection instrument stability test device, which comprises a computer, an industrial control system, a working air chamber, an infrared gas analyzer and a power supply, wherein the computer is connected and arranged with the industrial control system in a control way; the industrial control system is connected with the computer working air chamber and the infrared gas analyzer; the working gas chamber is connected with the infrared gas analyzer, and is also provided with a standard gas sample inlet; the infrared gas analyzer is connected with the industrial control system, and the power supply is connected with the computer, the industrial control system and the infrared gas analyzer. The utility model provides a test device is under computer control, mutually supports through infrared gas analysis appearance, industrial control system and accomplishes whole test process high-efficiently, and easy operation, experimental accuracy are high, alleviateed testing personnel's intensity of labour, have extended the range of application of equipment moreover furthest, have increased the application flexibility of equipment.
Description
Technical Field
The utility model belongs to gaseous detection area, concretely relates to methane detecting instrument stability test device.
Background
The methane detection instrument used in the current China coal mine production has large application quantity and various product types, and comprises various methane sensors such as low-concentration, high-low concentration, infrared non-dispersion, gas drainage, thermal conductivity type, optical interference and the like which are matched with a monitoring system, and a methane detection alarm instrument, an optical interference methane determinator and the like which are portable, wherein a detection element of the low-concentration methane detection instrument mainly comprises a carrier catalytic element, and the performance stability of the low-concentration methane detection instrument becomes an important factor for whether the instrument can play a monitoring role.
According to the requirements of the coal mine industry standard, the methane detection instrument needs to be subjected to a stability test, namely, the instrument is placed in a methane gas and air environment with specified concentration and continuously operated for a certain period, and then the error deviation condition of the instrument is tested. The operating cycle is typically specified for 15 days. The traditional test method is mainly carried out manually, firstly methane gas is introduced into a sealed gas chamber, then the gas in the gas chamber is uniformly distributed by stirring, then methane test instruments such as a light interference methane tester and the like are used for testing whether the methane concentration in the gas chamber is in a specified range, if the methane concentration is not in the specified range, the gas is required to be discharged or continuously introduced for repeated adjustment, after the methane concentration is adjusted, a power supply of a test sample is started for running for a time specified by a standard, and then the test sample is placed in the air for a time specified by the standard; and then repeating the steps for the next period.
Because the test period is long, the working gas chamber may slightly leak in the test process, the test sample may consume part of methane gas, the gas in the gas chamber needs to be frequently adjusted to keep the concentration of methane in the gas chamber in accordance with the requirement, the adjustment process is complicated, the labor intensity of manual operation is high, and the accuracy of test control is poor.
Therefore, the methane detection instrument device which is easy to operate and accurate in test process control is an urgent problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
To the complicated operation of present methane detecting instrument device, the poor problem of testing process control accuracy, the utility model aims to provide a methane detecting instrument stability test device to overcome the problem that prior art exists.
In order to achieve the above object, the utility model provides a methane detection instrument stability test device mainly includes:
the computer is in control connection with the industrial control system;
the input port of the industrial control system is connected with the computer, and the output port of the industrial control system is respectively connected with the working air chamber and the infrared gas analyzer;
the working air chamber is connected with the infrared gas analyzer and is also provided with an air inlet of a standard gas sample;
the infrared gas analyzer is connected with the industrial control system;
and the power supply is connected with the computer, the industrial control system and the infrared gas analyzer.
Furthermore, the industrial control system is connected with a computer through an RS232 interface.
Further, industry control system includes gas flow control circuit, signal processing circuit and power control circuit, gas flow control circuit is connected the setting with standard gas appearance and working air chamber, signal processing circuit is connected with the computer, signal processing circuit still is connected the setting with gas flow control circuit, power control circuit and infrared gas analysis, power control circuit is connected the setting with infrared gas analysis appearance.
Furthermore, a fan device is arranged at the top of the working air chamber.
Further, the power supply is a UPS power supply.
Further, the utility model discloses still be provided with the printer on above-mentioned test device's basis, the printer is connected the setting with the computer.
Further, the utility model discloses still be provided with the database on above-mentioned test device's basis, the database is connected the setting with the computer.
The utility model provides a methane detecting instrument stability test device is under computer control, through the concentration of infrared gas analysis appearance indoor methane, the concentration of industrial control system methane in the work air chamber is adjusted high-efficiently through admitting air exhaust for methane concentration accords with the test condition in the work air chamber, whole test process, easy operation, experimental accuracy is high, the intensity of labour who has alleviateed testing personnel, and furthest has extended the range of application of equipment, the application flexibility of equipment has been increased.
Drawings
The invention is further described with reference to the following drawings and detailed description.
FIG. 1 is a schematic structural view of a stability testing apparatus of a methane detecting instrument in this example;
FIG. 2 is a schematic diagram of a structural block of the apparatus for testing the stability of a methane detection instrument in this example;
FIG. 3 is a schematic view of the operation surface of the test bed of the stability test device of the methane detecting instrument in this example.
The reference numbers in the figures mean:
the system comprises a computer 100, an industrial control system 200, a gas flow control circuit 210, a signal processing circuit 220, a power supply control circuit 230, a working gas chamber 300, a standard gas sample 310, an infrared gas analyzer 400, a UPS 500, a printer 600, a database 700 and a test bed operation surface 800.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
The whole test process is completed by the infrared gas analyzer and the industrial control system under the control of the computer, the operation is simple, the test accuracy is high, the labor intensity of testers is reduced, the application range of the equipment is expanded to the maximum extent, and the application flexibility of the equipment is improved.
Specifically, referring to fig. 1 and fig. 2, as shown in the figure, the methane detection instrument stability test apparatus provided in this embodiment mainly includes a computer 100, an industrial control system 200, a working gas chamber 300, an infrared gas analyzer 400, and a UPS power supply 500.
The computer 100 is connected to the industrial control system 200 through an RS232 interface, and the industrial control system 200 completes the test process of the test apparatus in this example through the control of the computer 100.
The industrial control system 200 is the hardware core of the testing device, one end of the industrial control system unit is connected with the computer 100 through an RS232 interface, and the other end is connected with the working gas chamber 300, and is used for adjusting the concentration of methane in the working gas chamber 300 to achieve the testing condition.
The industrial control system 200 here mainly includes a gas flow control circuit 210, a signal processing circuit 220, and a power supply control circuit 230.
Wherein, the gas flow control circuit 210 is connected with the working air chamber 300, and the purpose of adjusting the methane concentration in the working air chamber 300 is realized by controlling the opening and closing of the electromagnetic valve, in order to avoid the too large fluctuation of the concentration range during adjustment, the embodiment adopts the pulse multi-harmonic vibrator to adjust the opening and closing time ratio of the electromagnetic valve, so as to achieve the purpose of stably adjusting the methane concentration and keep the concentration in dynamic balance.
The specific implementation scheme of the gas flow control circuit is not limited herein, and may be determined according to actual requirements. Such as existing stable and reliable gas flow control circuits.
The signal processing circuit 220 is connected to the infrared gas analyzer 400, and is configured to collect an output signal of the infrared gas analyzer 400, and is in communication connection with the computer 100.
Meanwhile, the signal processing circuit 220 is also connected to the gas flow control circuit 210 and the power control circuit 230.
The specific implementation scheme of the signal processing circuit is not limited herein, and may be determined according to actual requirements. Such as existing robust signal processing circuits may be employed.
The power control circuit 230 is connected to the infrared gas analyzer 400 and the product power supply, and controls the timing switches of the infrared gas analyzer 400, the product power supply, and the like mainly according to the running time set by the computer 100.
The specific implementation scheme of the power control circuit is not limited herein, and may be determined according to actual requirements. For example, the existing stable and reliable power supply control circuit can be adopted.
The working gas chamber 300 is used to provide the hermetic test environment required for the test.
The working gas chamber 300 is provided with a standard gas sample 310 inlet, and the standard gas sample in the working gas chamber 300 is mainly fed by controlling the opening and closing of the electromagnetic valve through the gas flow control circuit 210.
The working air chamber 300 is further provided with an air outlet, and air path connection is realized through the air outlet of the working air chamber 300 and the air inlet of the infrared gas analyzer 400.
Meanwhile, the working air chamber 300 can be simultaneously provided with at least 6 sensors or 10 portable instruments for stability test, and three groups of power outputs with different voltages (3.7V, 5V and 18V) are provided.
Further, a fan is disposed on the top of the working chamber 300 for stirring the gas to make the concentration of methane uniform.
The infrared gas analyzer 400 is connected with the working gas chamber 300 and used for monitoring the methane concentration in the working gas chamber 300 in real time and outputting a corresponding electric signal to the industrial control system 200, and after the methane concentration is compared with the methane concentration set by the computer 100, the computer 100 and the industrial control system 200 control the working gas chamber 300 to intake and exhaust.
The UPS power supply 500 is connected to the computer 100, the industrial control system 200, and the infrared gas analyzer 400, and is configured to prevent the test from restarting due to an unexpected power outage interruption test.
The present embodiment is further provided with a printer 600 on the basis of the above-mentioned testing device, and the printer 600 is connected to the computer 100 for printing the testing data.
The present embodiment is further provided with a database 700 on the basis of the above-mentioned testing device, and the database 700 is connected with the computer 100 for storing the testing data.
When the testing device with the structure is applied specifically, the working air chamber 300 and the industrial control system 200 in the testing device are combined to form a testing stand which is compact in structure and convenient to control. While a corresponding test stand operative surface 800 (shown in fig. 3) is provided on the test stand. The test bed operation surface 800 is connected to the three circuits of the gas flow rate control circuit 210, the signal processing circuit 220, and the power supply control circuit 230 in the industrial control system 200 under control, thereby completing the test.
The following is an example of the procedure of the test apparatus in practical use. It should be noted that the following examples are merely illustrative of one practical application or process of the test apparatus, and do not affect the structural configuration of the test apparatus.
For example, in a specific test, a methane detection instrument for the test is placed in the working air chamber 300 and powered by the power supply output by the test bed unit, and the whole test device is operated under the control of the computer 100.
After the operation is started, under the control of the computer 100, the industrial control system controls to open the air inlet valve and the small fan of the working air chamber 300, the standard methane gas is introduced into the working air chamber 300, the gas is uniformly stirred, and the gas flow rate can be adjusted through the corresponding knob on the operation surface 800 of the test bed.
The infrared gas analyzer 400 is communicated with the working gas chamber 300 through a gas path, analyzes the methane concentration in the experimental working gas chamber 300 in real time and outputs a corresponding electric signal to the industrial control system 200. When the methane concentration meets the requirement, the industrial control system 200 drives the electromagnetic valve to close the methane gas input into the working gas chamber 300, and the operation is carried out according to the set time.
In the operation process, when the concentration of methane in the working air chamber 300 is lower than a required value, the industrial control system 200 controls to open the methane gas inlet electromagnetic valve and introduce methane gas; when the concentration of methane is higher than the required value, the industrial control system controls and starts the exhaust electromagnetic valve of the working chamber 300, and the partial gas in the working chamber 300 is exhausted out of the working chamber 300.
When the set methane environment running time is reached, the industrial control system controls the starting electromagnetic valve to discharge the methane mixed gas in the working gas chamber 300 to the outside of the working gas chamber 300 until the working gas chamber 300 does not contain methane any more, and the industrial control system operates according to the set air placing time of the computer 100.
And the next cycle is continued after the completion of the one cycle until the test period is completed.
If power failure occurs during the test, the UPS will provide no less than 4 hours of power for the device.
The utility model provides a methane detecting instrument stability test device is under computer control, through the concentration of infrared gas analysis appearance indoor methane, the concentration of industrial control system methane in the work air chamber is adjusted high-efficiently through admitting air exhaust for methane concentration accords with the test condition in the work air chamber, whole test process, easy operation, experimental accuracy is high, the intensity of labour who has alleviateed testing personnel, and furthest has extended the range of application of equipment, the application flexibility of equipment has been increased.
The utility model provides a methane detecting instrument stability test device can be used to methane detecting instruments job stabilization nature such as methane alarm appearance, methane catalytic element, light interference measurement ware, low concentration methane sensor, high low concentration methane sensor, outage appearance experimental.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A methane detection instrument stability test device mainly comprises:
the computer is in control connection with the industrial control system;
the input port of the industrial control system is connected with the computer, and the output port of the industrial control system is respectively connected with the working air chamber and the infrared gas analyzer;
the working air chamber is connected with the infrared gas analyzer and is also provided with an air inlet of a standard gas sample;
the infrared gas analyzer is connected with the industrial control system;
and the power supply is connected with the computer, the industrial control system and the infrared gas analyzer.
2. The methane detection instrument stability test device of claim 1, wherein the industrial control system is connected to the computer through an RS232 interface.
3. The methane detection instrument stability test device of claim 1, wherein the industrial control system comprises a gas flow control circuit, a signal processing circuit and a power supply control circuit, the gas flow control circuit is connected with the standard gas sample and the working gas chamber, the signal processing circuit is connected with a computer, the signal processing circuit is further connected with the gas flow control circuit, the power supply control circuit and the infrared gas analyzer, and the power supply control circuit is connected with the infrared gas analyzer.
4. The methane detecting instrument stability testing device of claim 1, wherein a fan device is further provided at the top of the working chamber.
5. The methane detection instrument stability test device of claim 1, wherein the power source is a UPS power source.
6. The methane detecting instrument stability testing device of claim 1, further comprising a printer, wherein the printer is connected to the computer.
7. The methane detecting instrument stability testing device of claim 1, further comprising a database, wherein the database is connected to a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951945.2U CN212207288U (en) | 2020-05-29 | 2020-05-29 | Methane detecting instrument stability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951945.2U CN212207288U (en) | 2020-05-29 | 2020-05-29 | Methane detecting instrument stability test device |
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| Publication Number | Publication Date |
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| CN212207288U true CN212207288U (en) | 2020-12-22 |
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| CN202020951945.2U Active CN212207288U (en) | 2020-05-29 | 2020-05-29 | Methane detecting instrument stability test device |
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| CN (1) | CN212207288U (en) |
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- 2020-05-29 CN CN202020951945.2U patent/CN212207288U/en active Active
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