CN105092641B - Gas or liquid self-ignition point test device and test method under high-pressure oxygen-enriched environment - Google Patents
Gas or liquid self-ignition point test device and test method under high-pressure oxygen-enriched environment Download PDFInfo
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- CN105092641B CN105092641B CN201510500831.XA CN201510500831A CN105092641B CN 105092641 B CN105092641 B CN 105092641B CN 201510500831 A CN201510500831 A CN 201510500831A CN 105092641 B CN105092641 B CN 105092641B
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Abstract
The present invention provides gas under a kind of high-pressure oxygen-enriched environment or liquid self-ignition point test device and test method, including test cavity, controller, oxygen-enriched air bottle and sample to be tested bottle, blender is provided in test chamber body.Oxygen-enriched air bottle is connect by the first solenoid valve with test cavity, and sample to be tested bottle is connected with high pressure sampling pump, and high pressure sampling pump is connected with second solenoid valve, and second solenoid valve is connected with check valve, and check valve is connect with test cavity.Test cavity is connected by third solenoid valve with vacuum pump, and vacuum pump is connected with delivery pipe, is tested on cavity and is also connected with pressure detecting instrument and temperature monitor.First solenoid valve, second solenoid valve, third solenoid valve, pressure detecting instrument and temperature monitor are connected with controller.Gas or liquid self-ignition point test device and test method under high-pressure oxygen-enriched environment provided by the invention, test result accuracy is high, securely and reliably, reproducible.
Description
Technical field
The present invention relates to gas under gas or liquid self-ignition point testing field more particularly to high-pressure oxygen-enriched environment or liquid certainly
Burning point test device and test method.
Background technique
Autoignition temperature is also referred to as flashing temperature, be substance under given conditions, under no external flame or spark cause, substance
When being higher than heat emission rate because of the exothermic rate of exothermic oxidation reaction, temperature increases the minimum temperature for causing burning.Gas
The autoignition temperature and environmental pressure, oxygen content and container dimensional of body have much relations.
Currently, the device of test gas or liquid self-ignition point is more, but existing test method is there are many problems,
It tests during fuel gas, slow oxidation reaction occurs for the oxygen in fuel gas and air, and fuel gas is caused to arrive
It has aoxidized and has finished when up to self-ignition point, temperature and pressure does not mutate, and tests less than self-ignition point.In autoignition temperature and atmosphere
Oxygen content has much relations, and oxygen is heated since room temperature together with fuel gas, and oxygen and fuel gas reach spontaneous combustion
It will unavoidably react in advance before temperature, cause self-ignition point test inaccuracy.
Summary of the invention
The first object of the present invention is mentioned for the problem of the method inaccuracy of existing test gas or liquid self-ignition point
Gas or liquid self-ignition point test device under a kind of high-pressure oxygen-enriched environment are supplied.
The following technical solution is employed by the present invention:
Gas or liquid self-ignition point test device under high-pressure oxygen-enriched environment, including test cavity, controller, oxygen-enriched air bottle
And sample to be tested bottle, oxygen-enriched air bottle by the first solenoid valve with test cavity be connected, sample to be tested bottle be connected with high pressure into
Sample pump, high pressure sampling pump are connected with second solenoid valve, and second solenoid valve is connected with check valve, and check valve is connect with test cavity；
Test cavity is connected by third solenoid valve with vacuum pump, and vacuum pump is connected with delivery pipe, is tested on cavity and is also connected with pressure
Tension gauge and temperature monitor, first solenoid valve, second solenoid valve, third solenoid valve, pressure detecting instrument and temperature inspection
Instrument is surveyed to be connected with controller.
Preferably, blender is additionally provided in the test chamber body.
Preferably, the test cavity is also respectively connected safety valve and rupture disk, safety valve and rupture disk with discharge
Pipe is connected.
It is a further object to provide gas or liquid self-ignition points under the high-pressure oxygen-enriched environment described in more than one
The test method of test device.
The test method of gas or liquid self-ignition point test device under high-pressure oxygen-enriched environment, comprising:
Step 1: opening vacuum pump, and third solenoid valve is opened by controller, vacuum pump will be pumped into very in test chamber body
Sky, after close vacuum pump and third solenoid valve；
Step 2: opening oxygen-enriched air bottle, and the first solenoid valve is opened by controller, be filled with into test chamber body oxygen-enriched
Air and turn on agitator close oxygen-enriched air bottle and the first solenoid valve after being filled with；
Step 3: test cavity being heated, set temperature, while cracking pressure detector and temperature detection are warming up to
Instrument records temperature and pressure signal；
Step 4: opening sample to be tested bottle and high pressure sampling pump after to set temperature, and the second electromagnetism is opened by controller
Valve enters sample to be tested in test chamber body, the intracorporal temperature and pressure situation of change of test chamber is observed later, when temperature rises sharply
It at 20 DEG C or more, indicates that sample to be tested is burnt, when completely burned and after burning time is no less than 3 minutes, opens discharge
Pipe is discharged, and heating is simultaneously stopped, and waits instrument cooling；It is protection instrument safety, safety when temperature, pressure sharply increase
Valve can be opened, and gas is discharged out of test chamber body；
Step 5: if test cavity inner temperature does not rise suddenly, illustrating that the spontaneous combustion of sample has not yet been reached in set temperature
Temperature improves set temperature at this point, exhausting gas, repeats step 1 to step 4；It is sent out in case of test chamber vivo sample
Burning has been given birth to, then after reducing target temperature, has repeated step 1 to step 4, until finding autoignition temperature；
Step 6: after being completed, stopping heating, drain gas, upper flange plate cleaning is dismantled when instrument is cooled to room temperature
Inside, it is dry, prepare test next time and uses.
The invention has the advantages that:
Gas or liquid self-ignition point test device and method under high-pressure oxygen-enriched environment provided by the invention, in test process,
First oxygen-enriched air is filled in test cavity, then cavity is heated, is filled after reaching set temperature, then through sample to be tested
Entering and tests cavity, this mode can effectively avoid sample to be tested from just reacting before test with oxygen, so as to
Accurately test out the autoignition temperature of gas or liquid under high-pressure oxygen-enriched environment.In addition, safety valve and rupture disk can guarantee
The safe operation of whole device.Gas or liquid self-ignition point test device under high-pressure oxygen-enriched environment provided by the invention, test knot
Fruit accuracy is high, securely and reliably, reproducible.
Detailed description of the invention
Fig. 1 is gas or the structural schematic diagram of liquid self-ignition point test device under high-pressure oxygen-enriched environment.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing:
Embodiment 1
In conjunction with Fig. 1, gas or liquid self-ignition point test device under high-pressure oxygen-enriched environment, including test cavity 1, controller
16, oxygen-enriched air bottle 2 and sample to be tested bottle 4 are tested in cavity 1 and are provided with blender 13.
Wherein, oxygen-enriched air bottle 2 is connected by the first solenoid valve 3 with test cavity 1, and sample to be tested bottle 4 is connected with height
Sampling pump 5 is pressed, high pressure sampling pump 5 is connected with second solenoid valve 6, and second solenoid valve 6 is connected with check valve 7, check valve 7 and test
Cavity 1 connects.
Test cavity 1 is connected by third solenoid valve 9 with vacuum pump 8, and vacuum pump 8 is connected with delivery pipe 10, test chamber
Pressure detecting instrument 14 and temperature monitor 15 are also connected on body, safety valve 12 and rupture disk is also respectively connected in test cavity
11, safety valve 12 and rupture disk 11 are connected with delivery pipe 10, and safety valve and rupture disk can guarantee that the safety of whole device is transported
Row.
First solenoid valve 3, second solenoid valve 6, third solenoid valve 9, pressure detecting instrument 14 and temperature monitor 15 with control
Device 16 processed is connected.
Embodiment 2
The test method of gas or liquid self-ignition point test device under the high-pressure oxygen-enriched environment of above-described embodiment 1, comprising:
Step 1: opening vacuum pump 8, and third solenoid valve 9 is opened by controller 16, vacuum pump 8 will be tested in cavity 1
Be evacuated, after close vacuum pump 8 and third solenoid valve 9；
Step 2: opening oxygen-enriched air bottle 2, and the first solenoid valve 3 is opened by controller 16, be filled with into test cavity 1
Oxygen-enriched air and turn on agitator 13 close oxygen-enriched air bottle 2 and the first solenoid valve 3 after being filled with；
Step 3: test cavity 1 being heated, set temperature, while cracking pressure detector 14 and temperature inspection are warming up to
It surveys instrument 15 and records temperature and pressure signal；
Step 4: opening sample to be tested bottle 4 and high pressure sampling pump 5 after to set temperature, and open second by controller 16
Solenoid valve 6, enters sample to be tested in test cavity 1, observes in test chamber body 1 temperature and pressure situation of change later, when
Temperature rise sharply 20 DEG C or more when, indicate that sample to be tested is burnt, when completely burned and after burning time is no less than 3 minutes,
It opens delivery pipe 10 to be discharged, is simultaneously stopped heating, wait instrument cooling；It is protection instrument when temperature, pressure sharply increase
Device safety, safety valve 12 can be opened, and gas is discharged out of test chamber body；
Step 5: if test cavity inner temperature does not rise suddenly, illustrating that the spontaneous combustion of sample has not yet been reached in set temperature
Temperature improves set temperature at this point, exhausting gas, repeats step 1 to step 4；It is sent out in case of test chamber vivo sample
Burning has been given birth to, then after reducing target temperature, has repeated step 1 to step 4, until finding autoignition temperature；
Step 6: after being completed, stopping heating, drain gas, upper flange plate cleaning is dismantled when instrument is cooled to room temperature
Inside, it is dry, prepare test next time and uses.
Gas or liquid self-ignition point test device and method under high-pressure oxygen-enriched environment provided by the invention, in test process,
First oxygen-enriched air is filled in test cavity 1, then cavity is heated, after reaching set temperature, then through sample to be tested
It is filled with test cavity, this mode can effectively avoid sample to be tested from just reacting before test with oxygen, so as to
Accurately to test out the autoignition temperature of gas or liquid under high-pressure oxygen-enriched environment.
Gas or liquid self-ignition point test device under high-pressure oxygen-enriched environment provided by the invention, test result accuracy is high,
Securely and reliably, reproducible.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (1)
1. gas or liquid self-ignition point test method under high-pressure oxygen-enriched environment, which is characterized in that including gas under high-pressure oxygen-enriched environment
Body or liquid self-ignition point test device, which includes testing cavity, controller, oxygen-enriched air bottle and sample to be tested bottle, oxygen-enriched
Air bottle is connected by the first solenoid valve with test cavity, and sample to be tested bottle is connected with high pressure sampling pump, and high pressure sampling pump connects
It is connected to second solenoid valve, second solenoid valve is connected with check valve, and check valve is connect with test cavity；It tests cavity and passes through third electricity
Magnet valve is connected with vacuum pump, and vacuum pump is connected with delivery pipe, tests on cavity and is also connected with pressure detecting instrument and temperature detection
Instrument, first solenoid valve, second solenoid valve, third solenoid valve, pressure detecting instrument and temperature monitor distinguish phase with controller
Connection；
Blender is additionally provided in the test chamber body；
Safety valve and rupture disk is also respectively connected in the test cavity, and safety valve and rupture disk are connected with delivery pipe；
Method includes the following steps:
Step 1: opening vacuum pump, and third solenoid valve is opened by controller, vacuum pump will be evacuated in test chamber body, complete
Vacuum pump and third solenoid valve are closed after finishing；
Step 2: opening oxygen-enriched air bottle, and the first solenoid valve is opened by controller, be filled with oxygen-enriched air into test chamber body
And turn on agitator, oxygen-enriched air bottle and the first solenoid valve are closed after being filled with；
Step 3: test cavity being heated, set temperature, while cracking pressure detector and temperature monitor note are warming up to
Record temperature and pressure signal；
Step 4: sample to be tested bottle and high pressure sampling pump are opened after to set temperature, and second solenoid valve is opened by controller,
Enter sample to be tested in test chamber body, observe the intracorporal temperature and pressure situation of change of test chamber later, when temperature rises sharply 20
DEG C or more when, indicate that sample to be tested is burnt, when completely burned and after burning time is no less than 3 minutes, open delivery pipe
It is discharged, is simultaneously stopped heating, wait instrument cooling；It is protection instrument safety, safety valve when temperature, pressure sharply increase
It can open and gas is discharged out of test chamber body；
Step 5: if test cavity inner temperature does not rise suddenly, illustrating that the spontaneous combustion temperature of sample has not yet been reached in set temperature
Degree, at this point, gas is exhausted, set temperature is improved, repeats step 1 to step 4；Occur in case of test chamber vivo sample
Burning after then reducing target temperature, repeats step 1 to step 4, until finding autoignition temperature；
Step 6: after being completed, stopping heating, drain gas, dismantled when instrument is cooled to room temperature in upper flange plate cleaning
Portion, it is dry, prepare test next time and uses.
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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 |
| PL238324B1 (en) * | 2017-08-29 | 2021-08-09 | Inst Chemii Organicznej Polskiej Akademii Nauk | Flow apparatus intended to continuously conduct processes under high pressure |
| 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 |
| CN111650245B (en) * | 2020-07-10 | 2022-11-04 | 天津大学 | Combustible gas flameless combustion spontaneous combustion temperature testing system and method in high-pressure environment |
| CN111796051B (en) * | 2020-07-10 | 2022-09-16 | 天津大学 | Flameless combustion spontaneous combustion temperature testing device, system and method |
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|---|---|---|---|---|
| CN102353694A (en) * | 2011-08-22 | 2012-02-15 | 中国石油化工股份有限公司 | Automatic gas self-ignition temperature testing device |
| CN102928457A (en) * | 2012-10-15 | 2013-02-13 | 中国石油化工股份有限公司 | Experimental facility for testing autoignition temperature of gas in high-pressure oxygen-enriched environment |
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| CN104315332B (en) * | 2014-10-09 | 2016-09-14 | 江苏大学 | A kind of liquified natural gas aerating accurate measuring device |
| CN204241347U (en) * | 2014-11-29 | 2015-04-01 | 上海北分仪器技术开发有限责任公司 | A kind of Novel wet smoke on-line monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353694A (en) * | 2011-08-22 | 2012-02-15 | 中国石油化工股份有限公司 | Automatic gas self-ignition temperature testing device |
| CN102928457A (en) * | 2012-10-15 | 2013-02-13 | 中国石油化工股份有限公司 | Experimental facility for testing autoignition temperature of gas in high-pressure oxygen-enriched environment |
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