CN105092641A - Test device and test method of spontaneous ignition point of gas or liquid in high pressure oxygen-enriched environment - Google Patents
Test device and test method of spontaneous ignition point of gas or liquid in high pressure oxygen-enriched environment Download PDFInfo
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- CN105092641A CN105092641A CN201510500831.XA CN201510500831A CN105092641A CN 105092641 A CN105092641 A CN 105092641A CN 201510500831 A CN201510500831 A CN 201510500831A CN 105092641 A CN105092641 A CN 105092641A
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Abstract
The invention provides a test device and a test method of a spontaneous ignition point of gas or liquid in high pressure oxygen-enriched environment. The test device comprises a test chamber, a controller, an oxygen-enriched air bottle and a to-be-tested sample bottle, wherein a stirrer is arranged in the test chamber; the oxygen-enriched air bottle is connected with the test chamber by a first solenoid valve; the to-be-tested sample bottle is connected with a high pressure sample feeding pump; the high pressure sample feeding pump is connected with a second solenoid valve; the second solenoid valve is connected with a check valve, and the check valve is connected with the test chamber; the test chamber is connected with a vacuum pump by a third solenoid valve; the vacuum pump is connected with a discharge pipe, and the test chamber is further connected with a pressure tester and a temperature tester; the first solenoid valve, the second solenoid valve, the third solenoid valve, the pressure tester and the temperature tester are all connected with the controller. The test device and the test method of the spontaneous ignition point of the gas or liquid in high pressure oxygen-enriched environment are high in test result accuracy, safe and reliable, and good in repeatability.
Description
Technical field
The present invention relates to gas or liquid spontaneous ignition temperature field tests, to particularly relate under high-pressure oxygen-enriched environment gas or liquid spontaneous ignition temperature proving installation and method of testing.
Background technology
Self-ignition temperature also claims flashing temperature, be material under given conditions, under causing without external flame or spark, material because of the exothermic speed of exothermic oxidation reaction higher than heat emission rate time, temperature raises the minimum temperature causing burning.The self-ignition temperature of gas and environmental pressure, oxygen content and container dimensional have much relations.
At present, the device of test gas or liquid spontaneous ignition temperature is more, but there is many problems in existing method of testing, in test inflammable gas process, there is oxidation reaction slowly in the oxygen in inflammable gas and air, cause inflammable gas to be oxidized when arriving spontaneous ignition temperature complete, temperature and pressure is not undergone mutation, and tests less than spontaneous ignition temperature.Oxygen content in self-ignition temperature and atmosphere has much relations, and heated together with inflammable gas is from normal temperature by oxygen, oxygen and inflammable gas will unavoidably react in advance before arriving self-ignition temperature, causes spontaneous ignition temperature to test inaccurate.
Summary of the invention
The first object of the present invention is the inaccurate problem of method for existing test gas or liquid spontaneous ignition temperature, provides gas or liquid spontaneous ignition temperature proving installation under a kind of high-pressure oxygen-enriched environment.
The present invention adopts following technical scheme:
Gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment, comprise test cavity, controller, oxygen-enriched air bottle and testing sample bottle, oxygen-enriched air bottle is connected with test cavity by the first solenoid valve, testing sample bottle is connected with high pressure sampling pump, high pressure sampling pump is connected with the second solenoid valve, second solenoid valve is connected with retaining valve, and retaining valve is connected with test cavity; Test cavity is connected with vacuum pump by the 3rd solenoid valve, vacuum pump is connected with delivery pipe, test cavity is also connected with pressure detecting instrument and temperature monitor, and described first solenoid valve, the second solenoid valve, the 3rd solenoid valve, pressure detecting instrument and temperature monitor are all connected with controller.
Preferably, also stirrer is provided with in described test cavity.
Preferably, described test cavity is also connected to safety valve and rupture disk, and safety valve is all connected with delivery pipe with rupture disk.
Another object of the present invention is to provide the method for testing of gas or liquid spontaneous ignition temperature proving installation under the high-pressure oxygen-enriched environment described in more than one.
The method of testing of gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment, comprising:
Step 1: open vacuum pump, and by controller open the 3rd solenoid valve, vacuum pump is evacuated in test cavity, after close vacuum pump and the 3rd solenoid valve;
Step 2: open oxygen-enriched air bottle, and open the first solenoid valve by controller, is filled with oxygen-enriched air and turn on agitator, closes oxygen-enriched air bottle and the first solenoid valve after being filled with in test cavity;
Step 3: test cavity is heated, is warming up to design temperature, simultaneously opening pressure detector and temperature monitor record temperature and pressure signal;
Step 4: open testing sample bottle and high pressure sampling pump after design temperature, and open the second solenoid valve by controller, testing sample is made to enter in test cavity, temperature and pressure situation of change afterwards in observation test cavity, when temperature rise sharply more than 20 DEG C time, represent testing sample there occurs burning, when completely burning and after being no less than 3 minutes burning time, open delivery pipe to discharge, stop heating simultaneously, wait for instrument cooling; Be protection instrument safety when temperature, pressure sharply raise, safety valve can be opened and be discharged in test cavity by gas;
Step 5: if test cavity inner temperature does not rise suddenly, then illustrate that design temperature not yet reaches the self-ignition temperature of sample, now, gas is drained, design temperature is improved, repeat step 1 to step 4; If there is test chamber vivo sample to there occurs burning, then after being reduced by target temperature, repeat step 1 to step 4, until find self-ignition temperature;
Step 6: after being completed, stops heating, drains gas, takes upper flange plate cleaning inside when instrument is cooled to room temperature apart, dry, prepares test use next time.
The beneficial effect that the present invention has is:
Gas or liquid spontaneous ignition temperature proving installation and method under high-pressure oxygen-enriched environment provided by the invention, in test process, first oxygen-enriched air is filled with in test cavity, then cavity is heated, after reaching design temperature, be filled with test cavity through testing sample again, this mode can effectively avoid testing sample just to react with oxygen before test, thus can test out the self-ignition temperature of gas or liquid under high-pressure oxygen-enriched environment accurately.In addition, safety valve and rupture disk can ensure the safe operation of whole device.Gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment provided by the invention, test result accuracy is high, safe and reliable, reproducible.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment.
Embodiment
Below in conjunction with accompanying drawing, the present invention is specifically described:
Embodiment 1
Composition graphs 1, gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment, comprise test cavity 1, controller 16, oxygen-enriched air bottle 2 and testing sample bottle 4, is provided with stirrer 13 in test cavity 1.
Wherein, oxygen-enriched air bottle 2 is connected with test cavity 1 by the first solenoid valve 3, and testing sample bottle 4 is connected with high pressure sampling pump 5, and high pressure sampling pump 5 is connected with the second solenoid valve 6, second solenoid valve 6 and is connected with retaining valve 7, and retaining valve 7 is connected with test cavity 1.
Test cavity 1 is connected with vacuum pump 8 by the 3rd solenoid valve 9, vacuum pump 8 is connected with delivery pipe 10, test cavity is also connected with pressure detecting instrument 14 and temperature monitor 15, test cavity is also connected to safety valve 12 and rupture disk 11, safety valve 12 is all connected with delivery pipe 10 with rupture disk 11, and safety valve and rupture disk can ensure the safe operation of whole device.
First solenoid valve 3, second solenoid valve 6, the 3rd solenoid valve 9, pressure detecting instrument 14 and temperature monitor 15 are all connected with controller 16.
Embodiment 2
The method of testing of gas or liquid spontaneous ignition temperature proving installation under the high-pressure oxygen-enriched environment of above-described embodiment 1, comprising:
Step 1: open vacuum pump 8, and open the 3rd solenoid valve 9 by controller 16, vacuum pump 8 is evacuated in test cavity 1, after close vacuum pump 8 and the 3rd solenoid valve 9;
Step 2: open oxygen-enriched air bottle 2, and open the first solenoid valve 3 by controller 16, is filled with oxygen-enriched air and turn on agitator 13, closes oxygen-enriched air bottle 2 and the first solenoid valve 3 after being filled with in test cavity 1;
Step 3: heat test cavity 1, be warming up to design temperature, opening pressure detector 14 and temperature monitor 15 record temperature and pressure signal simultaneously;
Step 4: open testing sample bottle 4 and high pressure sampling pump 5 after design temperature, and open the second solenoid valve 6 by controller 16, testing sample is made to enter in test cavity 1, afterwards in observation test cavity 1 temperature and pressure situation of change, when temperature rise sharply more than 20 DEG C time, represent testing sample there occurs burning, when completely burning and after being no less than 3 minutes burning time, open delivery pipe 10 to discharge, stop heating simultaneously, wait for instrument cooling; Be protection instrument safety when temperature, pressure sharply raise, safety valve 12 can be opened and be discharged in test cavity by gas;
Step 5: if test cavity inner temperature does not rise suddenly, then illustrate that design temperature not yet reaches the self-ignition temperature of sample, now, gas is drained, design temperature is improved, repeat step 1 to step 4; If there is test chamber vivo sample to there occurs burning, then after being reduced by target temperature, repeat step 1 to step 4, until find self-ignition temperature;
Step 6: after being completed, stops heating, drains gas, takes upper flange plate cleaning inside when instrument is cooled to room temperature apart, dry, prepares test use next time.
Gas or liquid spontaneous ignition temperature proving installation and method under high-pressure oxygen-enriched environment provided by the invention, in test process, first oxygen-enriched air is filled with in test cavity 1, then cavity is heated, after reaching design temperature, be filled with test cavity through testing sample again, this mode can effectively avoid testing sample just to react with oxygen before test, thus can test out the self-ignition temperature of gas or liquid under high-pressure oxygen-enriched environment accurately.
Gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment provided by the invention, test result accuracy is high, safe and reliable, reproducible.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (4)
1. gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment, it is characterized in that, comprise test cavity, controller, oxygen-enriched air bottle and testing sample bottle, oxygen-enriched air bottle is connected with test cavity by the first solenoid valve, testing sample bottle is connected with high pressure sampling pump, high pressure sampling pump is connected with the second solenoid valve, and the second solenoid valve is connected with retaining valve, and retaining valve is connected with test cavity; Test cavity is connected with vacuum pump by the 3rd solenoid valve, vacuum pump is connected with delivery pipe, test cavity is also connected with pressure detecting instrument and temperature monitor, and described first solenoid valve, the second solenoid valve, the 3rd solenoid valve, pressure detecting instrument and temperature monitor are connected respectively with controller.
2. gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment according to claim 1, is characterized in that, be also provided with stirrer in described test cavity.
3. gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment according to claim 2, it is characterized in that, described test cavity is also connected to safety valve and rupture disk, and safety valve is all connected with delivery pipe with rupture disk.
4. the method for testing of gas or liquid spontaneous ignition temperature proving installation under high-pressure oxygen-enriched environment according to claim 3, is characterized in that, comprising:
Step 1: open vacuum pump, and by controller open the 3rd solenoid valve, vacuum pump is evacuated in test cavity, after close vacuum pump and the 3rd solenoid valve;
Step 2: open oxygen-enriched air bottle, and open the first solenoid valve by controller, is filled with oxygen-enriched air and turn on agitator, closes oxygen-enriched air bottle and the first solenoid valve after being filled with in test cavity;
Step 3: test cavity is heated, is warming up to design temperature, simultaneously opening pressure detector and temperature monitor record temperature and pressure signal;
Step 4: open testing sample bottle and high pressure sampling pump after design temperature, and open the second solenoid valve by controller, testing sample is made to enter in test cavity, temperature and pressure situation of change afterwards in observation test cavity, when temperature rise sharply more than 20 DEG C time, represent testing sample there occurs burning, when completely burning and after being no less than 3 minutes burning time, open delivery pipe to discharge, stop heating simultaneously, wait for instrument cooling; Be protection instrument safety when temperature, pressure sharply raise, safety valve can be opened and be discharged in test cavity by gas;
Step 5: if test cavity inner temperature does not rise suddenly, then illustrate that design temperature not yet reaches the self-ignition temperature of sample, now, gas is drained, design temperature is improved, repeat step 1 to step 4; If there is test chamber vivo sample to there occurs burning, then after being reduced by target temperature, repeat step 1 to step 4, until find self-ignition temperature;
Step 6: after being completed, stops heating, drains gas, takes upper flange plate cleaning inside when instrument is cooled to room temperature apart, dry, prepares test use next time.
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Cited By (7)
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| CN107356471A (en) * | 2017-08-15 | 2017-11-17 | 塔里木大学 | A kind of and the supporting simple low temperature intelligent temperature control device of direct shear apparatus and method |
| EP3476469A1 (en) * | 2017-08-29 | 2019-05-01 | Instytut Chemii Organicznej Polskiej Akademii Nauk | Flow equipment for high-pressure processing in continuous mode |
| CN110596564A (en) * | 2019-10-21 | 2019-12-20 | 山东大学 | Multipurpose photoelectric performance combined in-situ test pool and application thereof |
| CN111650245A (en) * | 2020-07-10 | 2020-09-11 | 天津大学 | System and method for testing flameless combustion spontaneous combustion temperature of combustible gas in high-pressure environment |
| CN111796051A (en) * | 2020-07-10 | 2020-10-20 | 天津大学 | Flameless combustion spontaneous combustion temperature testing device, system and method |
| CN112578072A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Device for measuring ignition delay time of combustible gas |
| CN112578073A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Experimental device for survey gaseous spontaneous combustion induction time |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356471A (en) * | 2017-08-15 | 2017-11-17 | 塔里木大学 | A kind of and the supporting simple low temperature intelligent temperature control device of direct shear apparatus and method |
| EP3476469A1 (en) * | 2017-08-29 | 2019-05-01 | Instytut Chemii Organicznej Polskiej Akademii Nauk | Flow equipment for high-pressure processing in continuous mode |
| CN112578072A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Device for measuring ignition delay time of combustible gas |
| CN112578073A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Experimental device for survey gaseous spontaneous combustion induction time |
| CN110596564A (en) * | 2019-10-21 | 2019-12-20 | 山东大学 | Multipurpose photoelectric performance combined in-situ test pool and application thereof |
| CN111650245A (en) * | 2020-07-10 | 2020-09-11 | 天津大学 | System and method for testing flameless combustion spontaneous combustion temperature of combustible gas in high-pressure environment |
| CN111796051A (en) * | 2020-07-10 | 2020-10-20 | 天津大学 | Flameless combustion spontaneous combustion temperature testing device, system and method |
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| CN105092641B (en) | 2019-01-08 |
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