Comprehensive gas distribution device and gas distribution method for explosion-proof tests

A test tank and explosion-proof tank technology, applied in gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., can solve the problem of increased inspection volume of mine explosion-proof electrical products, and achieve high gas distribution accuracy and success rate. The effect of fast response and high degree of automation control

Active Publication Date: 2012-04-25
FUSHUN CHINA COAL SCI & ENG TESTING CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many reasons have led to a huge increase in the inspection volume of new, old and foreign-used mining explosion-proof electrical

Method used

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  • Comprehensive gas distribution device and gas distribution method for explosion-proof tests
  • Comprehensive gas distribution device and gas distribution method for explosion-proof tests
  • Comprehensive gas distribution device and gas distribution method for explosion-proof tests

Examples

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Effect test

no. 1 example

[0024] Such as figure 1 , figure 2 , image 3 , an explosion-proof test comprehensive gas distribution device for hydrogen, air and methane ternary gas distribution, which consists of gas source unit 1, flow control unit 2, gas mixer 3, test tank unit 4 and pressure transmitter 5, The gas analysis unit 6, the data collector 7, and the computer 8 are characterized in that: it also includes a programmable controller that controls the flow control unit 2, the test tank unit 4, the pressure transmitter 5, and the gas analysis unit 6 through the computer 8. PLC control cabinet 9.

[0025] Wherein: the gas mixer 3 is fixed side by side by one end in the gas mixer shell 333, the hydrogen endless inlet pipe 351 with the hydrogen endless inlet pipe side hole 352, the air endless inlet pipe 341 with the air endless inlet pipe side hole 342, the The methane endless inlet pipe 361 of the side hole 362 of the endless inlet pipe is connected to the funnel-shaped first-stage mixed gas ac...

no. 2 example

[0033] see figure 1 , figure 2 , image 3 , an explosion-proof test comprehensive gas distribution device for binary gas distribution of air and methane, which consists of gas source unit 1, flow control unit 2, gas mixer 3, test tank unit 4, pressure transmitter 5, gas analysis Unit 6, data collector 7, computer 8 constitute, it is characterized in that: also comprise the programmable controller PLC that controls flow control unit 2, test tank unit 4, pressure transmitter 5, gas analysis unit 6 through computer 8 control cabinet9.

[0034] Wherein: the gas mixer 3 is fixed side by side by one end in the gas mixer shell 333, the hydrogen endless inlet pipe 351 with the hydrogen endless inlet pipe side hole 352, the air endless inlet pipe 341 with the air endless inlet pipe side hole 342, the The methane endless inlet pipe 361 of the side hole 362 of the endless inlet pipe is connected to the funnel-shaped first-stage mixed gas acceleration chamber 371, followed by the firs...

no. 3 example

[0043] refer to figure 1 , figure 2 , image 3 And the first embodiment, an explosion-proof test comprehensive gas distribution device ternary i.e. hydrogen, air, methane gas distribution method, including starting air compressor 54, hydrogen cylinder 12, methane gas cylinder 13 manual valve opening, air storage tank 11 After the medium gas pressure reaches a fixed value, the manual valve is opened. The feature is: the computer 8 sends a start command to the programmable logic controller PLC control cabinet 9 to test the gas distribution, and the air electromagnetic switch 21 is turned on, and then the feeding electromagnetic valve 48 and the exhaust electromagnetic valve are opened. 47 Clean the residual gas in the main pipeline and discharge it from the exhaust port 463, close the feeding solenoid valve 48 and exhaust solenoid valve 47 after 3 minutes, open the raw material intake solenoid valve 45 and piece intake solenoid valve 461 in sequence, and turn on the vacuum pum...

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Abstract

The invention relates to a comprehensive gas distribution device and a gas distribution method for explosion-proof tests for mine explosion-proof electric appliances. The device sequentially consists of a gas source unit, a flow control unit, a gas mixer, a test tank unit, a pressure transmitter, a gas analysis unit, a data acquisition apparatus and a computer. The device is characterized by also comprising a programmable logic controller (PLC) control cabinet for controlling the flow control unit, the test tank unit, the pressure transmitter and the gas analysis unit through the computer. By fully using modern means of PLC process control, ternary and binary effective mixing proportion of test mixed gases specified by national related standards is effectively finished; the system can acquire and analyze the data in real time in the gas distribution test process; meanwhile, by adopting a three-stage gas mixer, the gas distribution accuracy and the success rate are high, and the system has high response speed and high automation control degree; and by the gas distribution method, the inspection efficiency is improved on the basis of ensuring the inspection accuracy and the success rate.

Description

technical field [0001] The invention relates to a comprehensive gas distribution inspection device and a gas distribution method for explosion-proof tests of explosion-proof electrical appliances, in particular to a comprehensive gas distribution device and a gas distribution method for explosion-proof tests of explosion-proof electrical appliances used in coal mines. technical background [0002] The biggest characteristic of coal mines containing gas and other explosive gases is the existence of a large amount of flammable and explosive gases such as gas. When the content of methane in the air reaches (5-15)%, encountering a large heat source with a high temperature above 650°C or a spark with sufficient energy will cause an explosion, resulting in mine accidents. Therefore, mine explosion-proof electrical equipment must take explosion-proof safety measures to ensure its safe use in a certain explosion-hazardous environment. The judgment of whether it can be used safely m...

Claims

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Application Information

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IPC IPC(8): F17D1/04F17D3/01
Inventor 石磊李冰范光杨光鹆王慧林娜康丽莹任楠耿彦波温禄纯
Owner FUSHUN CHINA COAL SCI & ENG TESTING CENT CO LTD
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