CN102809519A - Gas chemical instability intelligent test device - Google Patents
Gas chemical instability intelligent test device Download PDFInfo
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- CN102809519A CN102809519A CN2012103182708A CN201210318270A CN102809519A CN 102809519 A CN102809519 A CN 102809519A CN 2012103182708 A CN2012103182708 A CN 2012103182708A CN 201210318270 A CN201210318270 A CN 201210318270A CN 102809519 A CN102809519 A CN 102809519A
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Abstract
The invention relates to a gas chemical instability intelligent test device, comprising a test container, an electronic ignition device, a temperature control module, a pressure control module, an energy recording module and a control terminal, wherein a gas inlet and a gas outlet are arranged at the top of the test container, a closed test space is formed in the test container by fixing bolts, an electric heater and a heat-insulation layer are sequentially arranged outside the test container and are connected with a pressure sensor and an in-container temperature sensor, and the in-container temperature sensor and a heater sensor regulate test temperature under the control of a temperature sensing control module. After ignition, gas chemical instability can be determined through recording of pressure in the test container. A T-shaped gas guide pipe is connected with the gas outlet, one end of the T-shaped gas guide pipe is connected with an explosion disk fixing nut, and the other end of the T-shaped gas guide pipe is connected with a gas outlet pipeline; and the gas outlet pipeline is provided with a direct exhaust branch and an exhaust branch with a vacuum pump. After reaction, the pressure of test gas in the test container rises up, and when the pressure is higher than a safe pressure value, an explosion disk is exploded automatically to release pressure.
Description
Technical field
The invention belongs to chemicals class test device, the particularly a kind of test unit that can accomplish the intelligence test of aerochemistry stability.
Background technology
For reducing the harm that chemicals produces; Guarantee the safety of the people's lies and property; The United Nations has released " GHS " (GHS), thereby makes it become various countries scientifically dispose chemicals by global unified viewpoint guiding text.It is 3 big types totally 28 that the GHS system is divided into physics harm, health hazard and environment with the harm of chemicals; Wherein the aerochemistry instability is meant that gas is under the situation that has no the association condition (like air or oxygen) that reacts; Cause temperature and/or pressure to raise through self decomposing, and then the reaction of causing danger.For this reason, must require to classify, confirm its chemical instability, and then guarantee it and producing, packing, transport, use and the safety of process such as storage according to the GHS system to gas.The related decomposing gas of aerochemistry instability tendency depends on pressure and temperature to a great extent, if gaseous mixture, also depends on the concentration of unstable chemcial property composition.General through gas under environment temperature and pressure, and 65 ℃ with corresponding original pressure under chemical property whether stablize and judge.Corresponding original pressure described here refers to the pressure when making an experiment for 65 ℃.For the test gas that is gaseous state fully, corresponding original pressure is the pressure of gas in the time of 65 ℃ during maximum load pressure at ambient temperature; For liquid pilot gas, corresponding original pressure is the vapor pressure in the time of 65 ℃.At present, about mostly gas security pick-up unit is to accomplish the test relevant with the flammable gas explosion limit, promptly through gas after even the mixing, is lighted a fire and confirmed explosion limits in the finite concentration scope with air (or oxygen).Chemical instability is the newly-increased classification item of GHS system; Aerochemistry instability test unit is many both at home and abroad at present reequips on explosion limits test decorum basis; Adopt manual record to differentiate the method for pressure change rate; Shortage is to intelligent control such as test gas sample introduction, reaction cylinder internal pressure record, gas discharge and judge, also possibly in experimentation, directly adopt manually-operated simultaneously and increases the danger of test.
Summary of the invention
In order to improve the security and the Based Intelligent Control property of the test of aerochemistry instability; The present invention provides the test unit of gas mixture ignition in a kind of closed container that can accomplish under the certain environment temperature and pressure; Accomplish the pressure rising through pressure transducer record pressure changing and intelligence and surpass 20% judgement, thereby confirm whether the gas potpourri has chemical instability.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of aerochemistry instability intelligent test device; It is characterized in that: pick-up unit comprises test chamber, electronic ignition device, temperature control modules, pressure control module, energy logging modle and computer control terminal; The test chamber top is provided with air intake opening and gas outlet; Form the blocking test space through set bolt, the test chamber outside is provided with electric heater and thermal insulating warm-keeping layer successively, and connects temperature sensor in pressure transducer and the container; Temperature sensor and heater sensor are regulated test temperature in the container under the control of TEMP control module; The electronic ignition device igniting, incendiary source is lighted test gas, pressure transducer testing experiment container pressure, energy logging modle record ignition energy; Temperature control modules, pressure control module, energy logging modle and computer control terminal are connected, through the instable Intelligent Measurement of pressure variation realization aerochemistry of monitoring course of reaction.
Gas inlet is connected with the test gas storer through gas line, injects test chamber down through the control of manually operated control valve and autocontrol valve; Gas outlet is connected with T shape wireway through gas line, and T shape wireway one end is connected with the explosion disk hold-down nut, and the other end connects outlet pipe; Outlet pipe is provided with two bronchus roads, promptly direct exhaust branch pipe and band vacuum pump exhaust branch pipe; Bronchus is equipped with autocontrol valve on the road, the unlatching of computer control terminal control autocontrol valve.
T shape wireway one end is connected fixedly explosion disk with the explosion disk hold-down nut, nut thickening and top boring, and held O grommet type seal circle on the explosion disk, the explosion disk hold-down nut is connected fixedly explosion disk through screw thread with T shape wireway; Test gas reaction back pressure raises in the test chamber, when surpassing the safe pressure value, and the automatic explosion pressure release of explosion disk.
The invention has the beneficial effects as follows; Automatically control the controls such as air inlet, heating, igniting and pressure acquisition of accomplishing entire test through control terminal; Can accomplish the mensuration of decomposing gas tendency under environment temperature and pressure, 65 ℃ and the corresponding original pressure; Control terminal and testing equipment can fully shield, and explosion disk links to each other abundant warranty test process safety with gas outlet.
Description of drawings
Fig. 1 aerochemistry instability intelligent test device structural representation.
Fig. 2 T shape wireway and explosion disk hold-down nut connection layout.
Fig. 3 explosion disk hold-down nut vertical view.
Label title in the accompanying drawing: 1. test gas storer, 2. test chamber, 3. electric heater, 4. thermal insulating warm-keeping layer, 5. incendiary source; 6. electronic ignition device, 7. air intake opening, 8. gas outlet, 9. pressure transducer, 10. temperature sensor in the container; 11. heater sensor, 12. set bolts, 13. energy logging modles, 14. TEMP control modules, 15. pressure sensings show and logging modle; 16.T the shape wireway, 17. explosion disk hold-down nuts, 18. autocontrol valves, 1,19. autocontrol valve, 2,20. manually operated control valves; 21. vacuum pump, 22. autocontrol valves, 3,23. autocontrol valves, 4,24. waste gas; 25. the computer control terminal, 26. explosion disks, 27.O type packing ring, 28. screw threads.The each several part annexation is seen Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment 1: aerochemistry instability intelligent detection device.
A kind of aerochemistry instability intelligent detection device as shown in Figure 1; Device comprises test chamber (2), electronic ignition device (6), temperature control modules (14), pressure control module (15), energy logging modle (13) and computer control terminal (25); Test chamber (2) top is provided with air intake opening (7) and gas outlet (8); Form the blocking test space through set bolt (12); Test chamber (2) outside is provided with electric heater (3) and thermal insulating warm-keeping layer (4) successively, and connects temperature sensor (10) in pressure transducer (9) and the container; Temperature sensor (10) and heater sensor (11) are regulated test temperature in the container under the control of TEMP control module (14); Electronic ignition device (6) igniting, incendiary source (5) is lighted test gas, pressure transducer (9) testing experiment container (2) pressure, energy logging modle (13) record ignition energy; Gas inlet (7) is connected with test gas storer (1) through gas line, injects test chamber (2) down through the control of manually operated control valve and autocontrol valve 2 (19); Gas outlet (8) is connected with T shape wireway (16) through gas line, and T shape wireway (16) one ends are connected with explosion disk hold-down nut (17), and the other end connects outlet pipe; Outlet pipe is provided with two bronchus roads, promptly direct exhaust branch pipe and band vacuum pump (21) exhaust branch pipe; Bronchus is equipped with autocontrol valve on the road.
Temperature control modules (14), pressure control module (15), energy logging modle (13) are connected with computer control terminal (25), the unlatching of computer control terminal (25) control autocontrol valve.Pressure through the monitoring course of reaction changes the instable Intelligent Measurement of realization aerochemistry.
Embodiment 2:T shape wireway and explosion disk hold-down nut syndeton.
T shape wireway as shown in Figure 2 and explosion disk hold-down nut syndeton; T shape wireway (16) one ends are connected fixedly explosion disk (26) with explosion disk hold-down nut (17); Explosion disk (26) is gone up held O grommet type seal circle, and explosion disk hold-down nut (17) is connected fixedly explosion disk (26) through screw thread (28) with T shape wireway (16); The interior test gas reaction of test chamber (2) back pressure raises, when surpassing the safe pressure value, and explosion disk (26) explosion pressure release automatically.
Explosion disk hold-down nut as shown in Figure 3, nut thickening and top boring, fixedly explosion disk (26).
Embodiment 3: the method for application of aerochemistry instability intelligent detection device.
Before the test beginning, test gas is classified, confirm as pure gas or blended gaseous mixture; React for causing danger between the gas with various in the gaseous mixture; Like inflammable gas and oxidizing gas, do not think should not carry out this type of test by unstable chemcial property.Usually gas contains triple bond, adjacent double bond or conjugated double bond, the two keys of halogenation and tension link etc., all can consider to carry out the chemical instability test.Here with 65 ℃ with corresponding original pressure under chemical instability test be that example describes.At first, confirm original pressure, the pressure of (gas is in the time of 65 ℃) when being maximum at ambient temperature (loadings) pressure of gas can be through calculating or the test acquisition.Before the gas injection test container; By original gas (air) in the vacuum pump emptying receptacles, the control of back through autocontrol valve is to the internal tank gas injection, the contiguous original pressure numerical value 90% of pressure the time; Stop gas injection through the autocontrol valve gate control; Test chamber inside is warming up to 65 ℃, and the back makes the interior gas of test chamber reach 65 ℃ and corresponding original pressure under the acting in conjunction of pressure control module and temperature control modules.Temperature is through two temperature sensors difference HEATER FOR MEASURING and test chamber internal temperature in the test chamber, and temperature control modules links to each other with the two and accomplishes temperature auto control in the container.Cut off the test gas storage tank valve through manual control valve before the igniting.The electronic ignition device igniting, ignition energy is controlled between 15 joules ± 3 joules, by energy logging modle record.The computer control terminal shows and record test chamber internal pressure numerical value, when judging that test gas pressure rises above after the certain numerical value, can stop test.After test stops, gas in the emptying receptacles, on the one hand; If container inner pressure reaches explosion disk pressure release pressure, can make waste gas safety discharge through breaking of explosion disk, on the other hand; Container inner pressure does not reach explosion disk pressure release pressure, then can discharge through blow off valve gate control waste gas.After test finishes,, pressure is raise percent as the foundation of judging that the aerochemistry instability is judged through the pressure rising situation of computer control terminal records.
Claims (5)
1. aerochemistry instability intelligent detection device; It is characterized in that: pick-up unit comprises test chamber, electronic ignition device, temperature control modules, pressure control module, energy logging modle and computer control terminal; The test chamber top is provided with air intake opening and gas outlet; Form the blocking test space through set bolt, the test chamber outside is provided with electric heater and thermal insulating warm-keeping layer successively, and connects temperature sensor in pressure transducer and the container; Temperature sensor and heater sensor are regulated test temperature in the container under the control of TEMP control module; The electronic ignition device igniting, incendiary source is lighted test gas, pressure transducer testing experiment container pressure, energy logging modle record ignition energy; Temperature control modules, pressure control module, energy logging modle and computer control terminal are connected, through the instable Intelligent Measurement of pressure variation realization aerochemistry of monitoring course of reaction.
2. the described aerochemistry instability of claim 1 intelligent detection device is characterized in that: gas inlet is connected with the test gas storer through gas line, through the control time injection test chamber of manually operated control valve and autocontrol valve; Gas outlet is connected with T shape wireway through gas line, and T shape wireway one end is connected with the explosion disk hold-down nut, and the other end connects outlet pipe; Outlet pipe is provided with two bronchus roads, promptly direct exhaust branch pipe and band vacuum pump exhaust branch pipe; Bronchus is equipped with autocontrol valve on the road, the unlatching of computer control terminal control autocontrol valve.
3. the described aerochemistry instability of claim 2 intelligent detection device; It is characterized in that: T shape wireway one end is connected fixedly explosion disk with the explosion disk hold-down nut; Nut thickening and top boring; Held O grommet type seal circle on the explosion disk, the explosion disk hold-down nut is connected fixedly explosion disk through screw thread with T shape wireway; Test gas reaction back pressure raises in the test chamber, when surpassing the safe pressure value, and the automatic explosion pressure release of explosion disk.
4. the method for application of the described aerochemistry instability of one of claim 1-3 intelligent detection device is characterized in that: at first, confirm original pressure, be the pressure of gas in the time of 65 ℃, can obtain through calculating or testing; Before the gas injection test container; By original gas in the vacuum pump emptying receptacles; The control of back through autocontrol valve is to the internal tank gas injection, the contiguous original pressure numerical value 90% of pressure the time, stop gas injection through the autocontrol valve gate control; Test chamber inside is warming up to 65 ℃; The back under the acting in conjunction of pressure control module and temperature control modules, make in the test chamber gas reach 65 ℃ with corresponding original pressure test chamber in temperature through two temperature sensors HEATER FOR MEASURING and test chamber internal temperature respectively, the temperature control modules temperature auto control in the completion container that links to each other with the two; Cut off the test gas storage tank valve through manual control valve before the igniting; The electronic ignition device igniting, ignition energy is controlled between 15 joules ± 3 joules, by energy logging modle record; The computer control terminal shows and record test chamber internal pressure numerical value, when judging that test gas pressure rises above after the certain numerical value, can stop test; After test finishes,, pressure is raise percent as the foundation of judging that the aerochemistry instability is judged through the pressure rising situation of computer control terminal records.
5. the method for application of the described aerochemistry instability of claim 4 intelligent detection device, it is characterized in that: container inner pressure reaches explosion disk pressure release pressure, makes waste gas safety discharge through breaking of explosion disk; Container inner pressure does not reach explosion disk pressure release pressure, then can discharge through blow off valve gate control waste gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210318270.8A CN102809519B (en) | 2012-09-02 | 2012-09-02 | Usage method of gas chemical instability intelligent test device |
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| CN201210318270.8A CN102809519B (en) | 2012-09-02 | 2012-09-02 | Usage method of gas chemical instability intelligent test device |
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| CN102809519A true CN102809519A (en) | 2012-12-05 |
| CN102809519B CN102809519B (en) | 2015-04-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983533A (en) * | 2014-04-30 | 2014-08-13 | 东北大学 | Test device and test method for crack evolution and seepage characteristic of gas-containing shale |
| CN107101676A (en) * | 2017-06-29 | 2017-08-29 | 湖北三江航天江河化工科技有限公司 | A kind of mine carbon dioxide demolition set test system |
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| US6715338B1 (en) * | 1998-08-28 | 2004-04-06 | Taiwan Semiconductor Manufacturing Co., Ltd | Apparatus and method for detecting flammable gas in a gas mixture |
| CN101692081A (en) * | 2009-09-28 | 2010-04-07 | 中国石油化工股份有限公司 | Device for testing minimum ignition energy of combustible gas or vapor |
| CN101726573A (en) * | 2009-11-30 | 2010-06-09 | 浙江工业大学 | Combustible gas explosion experiment system |
| CN101876655A (en) * | 2009-12-01 | 2010-11-03 | 中国检验检疫科学研究院 | Gas inflammability tester |
| CN101975717A (en) * | 2010-10-18 | 2011-02-16 | 南京工业大学 | Combustible gas explosion limit test system in non-standard state |
| CN101995419A (en) * | 2009-08-21 | 2011-03-30 | 中国石油化工股份有限公司 | Device for testing air phase combustion and explosion characteristics of equipment under working conditions |
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2012
- 2012-09-02 CN CN201210318270.8A patent/CN102809519B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6715338B1 (en) * | 1998-08-28 | 2004-04-06 | Taiwan Semiconductor Manufacturing Co., Ltd | Apparatus and method for detecting flammable gas in a gas mixture |
| CN101995419A (en) * | 2009-08-21 | 2011-03-30 | 中国石油化工股份有限公司 | Device for testing air phase combustion and explosion characteristics of equipment under working conditions |
| CN101692081A (en) * | 2009-09-28 | 2010-04-07 | 中国石油化工股份有限公司 | Device for testing minimum ignition energy of combustible gas or vapor |
| CN101726573A (en) * | 2009-11-30 | 2010-06-09 | 浙江工业大学 | Combustible gas explosion experiment system |
| CN101876655A (en) * | 2009-12-01 | 2010-11-03 | 中国检验检疫科学研究院 | Gas inflammability tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983533A (en) * | 2014-04-30 | 2014-08-13 | 东北大学 | Test device and test method for crack evolution and seepage characteristic of gas-containing shale |
| CN103983533B (en) * | 2014-04-30 | 2016-06-22 | 东北大学 | A kind of gas bearing shale crack develops and seepage flow characteristics test device and method |
| CN107101676A (en) * | 2017-06-29 | 2017-08-29 | 湖北三江航天江河化工科技有限公司 | A kind of mine carbon dioxide demolition set test system |
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| CN102809519B (en) | 2015-04-22 |
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