CN109668930A - The test method of gas-particle two-phase combustible material minimum ignition energy - Google Patents
The test method of gas-particle two-phase combustible material minimum ignition energy Download PDFInfo
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- CN109668930A CN109668930A CN201710965479.6A CN201710965479A CN109668930A CN 109668930 A CN109668930 A CN 109668930A CN 201710965479 A CN201710965479 A CN 201710965479A CN 109668930 A CN109668930 A CN 109668930A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
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Abstract
The present invention relates to a kind of test method of gas-particle two-phase combustible material minimum ignition energy, mainly solve the problems, such as to there is no the minimum ignition energy test method for gas-particle two-phase in the prior art.The present invention by using a kind of gas-particle two-phase combustible material minimum ignition energy test method, the minimum ignition energy test of gas-particle two-phase combustible material is carried out using device for testing minimum ignition energy, described device main body is spherical test chamber, vacuum pump, surge tank are connected on cavity, ignitor is mounted on the flange on the upside of cavity, Precision EDM generator one end is connect with ignitor, the technical solution that the other end is connect with computer preferably solves the above problem, can be used in the test of gas-particle two-phase combustible material minimum ignition energy.
Description
Technical field
The present invention relates to a kind of test methods of gas-particle two-phase combustible material minimum ignition energy.The invention patent is mainly applied
In the production storage art of three big synthetic material plastics, rubber and synthetic fibers, in order to prevent from producing and storing process
Middle gas-particle two-phase systematic collaboration acts on the generation of lower fire explosion.
Background technique
Three big synthetic materials are all to obtain macromolecule product by addition polymerization by small-molecule starting material in process of production, small
Molecular raw material such as ethylene, butylene etc. is gaseous state, and macromolecule product is solid-state, when Gaseous materials and solid material concentration are below
When lower explosion limit, blast accident will not occur for one-component, but the mixture of the two has the risk fired.
The minimum ignition energy of substance is with the minimum ignition energy of the solid matter, minimum ignition energy of fuel gas, dense after mixing
Degree is related with the sensitive concentration that gas fires, and finds through investigation, has corresponding survey for the minimum ignition energy of single phase at present
Trial assembly is set, and the minimum ignition energy for gas-particle two-phase is it is not yet found that test device and test method.
Summary of the invention
The technical problem to be solved by the present invention is to there is no the minimum ignition energy test for gas-particle two-phase in the prior art
The problem of method, provides a kind of test method of new gas-particle two-phase combustible material minimum ignition energy.This method has operation letter
Single, reproducible advantage.
To solve the above problems, The technical solution adopted by the invention is as follows: a kind of gas-particle two-phase combustible material minimum ignition
The test method of energy is tested using the minimum ignition energy that device for testing minimum ignition energy carries out gas-particle two-phase combustible material, described
Apparatus main body is spherical test chamber, and vacuum pump, surge tank are connected on cavity, and ignitor is mounted on the flange on the upside of cavity
On, Precision EDM generator one end is connect with ignitor, and the other end is connect with computer；When test, include the following steps:
(1) fuel gas and air are configured to gaseous mixture according to operating condition ratio and enter mixer；(2) combustible dust is placed in fugitive dust
On device, open vacuum pump, test cavity vacuumized, a part of mixed gas in mixer enters cavity, another part into
Enter high pressure tank, the dust on fugitive dust device can all be blown afloat and form turbulent flow by the gas of high pressure tank；(3) adjustment precision
Sparker energy is controlled by computer after fugitive dust and is lighted a fire, records ignition conditions by observation window；(4) test chamber is cleared up
After body, according to ignition conditions, ignition energy size is adjusted, above-mentioned experiment is repeated, obtains certain gas phase concentration fuel gas condition
The minimum ignition energy that lower dust fires.
In above-mentioned technical proposal, it is preferable that have vacuum meter on test cavity.
In above-mentioned technical proposal, it is preferable that the sum of the gas flow into cavity and the gas flow into high pressure tank are just
Maintaining cavity well is normal pressure.
In above-mentioned technical proposal, it is preferable that mixer is equipped with mixing plant.
In above-mentioned technical proposal, it is preferable that the gas in high pressure tank is connected after solenoid valve with fugitive dust device, fugitive dust device
It is within the cavity.
In above-mentioned technical proposal, it is preferable that observation window is located at cavity side.
In above-mentioned technical proposal, it is preferable that Precision EDM generator is connected with ignitor, and ignitor is located at cavity
It is interior.
In above-mentioned technical proposal, it is preferable that high pressure tank is equipped with pressure gauge.
In above-mentioned technical proposal, it is preferable that vacuum pump outlet is connected with surge tank, and surge tank is connected with test cavity.
In above-mentioned technical proposal, it is preferable that solenoid valve is connected with control computer.
This patent has effectively filled up existing test hand for the mixed minimum ignition energy test of gas-particle two-phase combustible material
The deficiency of section, has the advantages that easy to operate, reproducible, achieves preferable technical effect.
Detailed description of the invention
Fig. 1 is the flow diagram of device of the present invention.
In Fig. 1,1. vacuum pumps；2. surge tank；3A. vacuum meter；4. ignitor of 3B. pressure gauge；5. Precision EDM is sent out
Raw device；6. computer；7. testing cavity；8. fugitive dust device；9. solenoid valve；10 high pressure admission tanks；11 mixers；12. fuel gas steel
Bottle；13. air steel cylinder；14 mixed gas are into cavity pipeline；15. observation window.
The present invention will be further described below by way of examples, but is not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
A kind of test method of gas-particle two-phase combustible material minimum ignition energy, using device for testing minimum ignition energy (such as Fig. 1
It is shown) carry out the minimum ignition energy test of gas-particle two-phase combustible material, described device main body is spherical test chamber, vacuum pump, slow
It rushes tank to be connected on cavity, ignitor is mounted on the flange on the upside of cavity, Precision EDM generator one end and ignition power
Pole connection, the other end are connect with computer；When test, include the following steps: (1) by fuel gas steel cylinder and air steel cylinder according to work
Condition ratio is configured to gaseous mixture and enters mixer；(2) combustible dust is placed on fugitive dust device, vacuum pump is opened, by test chamber
Body vacuumizes, and a part of mixed gas in mixer enters cavity, and another part enters high pressure tank, high pressure tank
Dust on fugitive dust device can all be blown afloat and form turbulent flow by gas；(3) adjustment precision sparker energy, after fugitive dust
It is controlled and is lighted a fire by computer, ignition conditions are recorded by observation window；(4) after cleaning test cavity, according to ignition conditions, igniting is adjusted
Energy size repeats above-mentioned experiment, obtains the minimum ignition energy that dust under the conditions of certain gas phase concentration fuel gas fires
Amount.
There is vacuum meter on test cavity.Gas flow into cavity is just tieed up with the sum of the gas flow for entering high pressure tank
Holding cavity is normal pressure.Mixer is equipped with mixing plant.Gas in high pressure tank is connected after solenoid valve with fugitive dust device, raises
Dirt device is within the cavity.Observation window is located at cavity side.Precision EDM generator is connected with ignitor, and ignitor is located at
In cavity.High pressure tank is equipped with pressure gauge.Vacuum pump outlet is connected with surge tank, and surge tank is connected with test cavity.Electromagnetism
Valve is connected with control computer.
Polyethylene (solid phase), the test of the minimum ignition energy of ethylene (gas phase) are carried out using method of the invention.
Ethylene contents 1% in polyethylene feed bin, dust concentration is in 30~100g/m3, test obtains two-phase system and do not occur
The minimum ignition energy of fire explosion, to instruct electrostatic prevention and control.
Operating method:
1. ethylene steel cylinder and air steel cylinder are entered mixer stirring according to the gaseous mixture that operating condition ratio prepares 1% concentration
It is even spare.
2. according to 30g/m3Concentration, quantitative polythylene dust is placed on fugitive dust device.Vacuum pump is opened, will be tested
Cavity vacuumizes, and part mixed gas enters cavity by pipeline in mixer, and another part enters high pressure tank, and cavity is
Normal pressure, meanwhile, it should ensure that the dust on fugitive dust device can all be blown afloat when passing through solenoid valve and be formed properly by high pressure tank
Turbulent flow.
3. adjustment precision sparker energy is controlled by computer after fugitive dust 60ms and is lighted a fire, recorded by observation window
Ignition conditions.
4. according to ignition conditions, adjusting ignition energy size after cleaning test cavity, repeating above-mentioned experiment, obtain 1% second
Under the conditions of alkene concentration combustible gas, 30g/m3The minimum ignition energy that polythylene dust fires.
5. increasing polyethylene powder dust concentration, step 1-4 is repeated, 1% ethylene concentration fuel gas, the poly- second of various concentration are obtained
Under the conditions of alkene dust, the minimum ignition energy that fires.Table 1 is the comparison of several groups of experimental results:
Influence of the 1 differing ethylene concentration of table to mixed material minimum ignition energy
Note: ethylene minimum ignition energy is literature value, remaining result is experiment value
According to the experimental results, after being mixed into ethylene gas inside polyethylene powder, the minimum ignition energy of mixed system is wanted
Lower than the minimum ignition energy of polyethylene powder, and it is higher than the minimum ignition energy of ethylene；As ethylene gas content increases, mixture
It is that ignition energy decline is obvious, when ethylene gas content reaches 1%, ignition energy about reduces half.
Claims (10)
1. a kind of test method of gas-particle two-phase combustible material minimum ignition energy carries out gas-solid using device for testing minimum ignition energy
The minimum ignition energy of two-phase combustible material is tested, and described device main body is spherical test chamber, and vacuum pump, surge tank are connected to cavity
On, ignitor is mounted on the flange on the upside of cavity, and Precision EDM generator one end is connect with ignitor, the other end with
Computer connection；When test, include the following steps: that fuel gas and air are configured to gaseous mixture according to operating condition ratio and entered by (1)
Mixer；(2) combustible dust is placed on fugitive dust device, opens vacuum pump, test cavity vacuumized, one in mixer
Point mixed gas enters cavity, and another part enters high pressure tank, and the gas of high pressure tank can be by the dust on fugitive dust device
All blows afloat and form turbulent flow；(3) adjustment precision sparker energy is controlled by computer after fugitive dust and is lighted a fire, passes through sight
Examine window record ignition conditions；(4) after cleaning test cavity, according to ignition conditions, ignition energy size is adjusted, repeats above-mentioned reality
It tests, obtains the minimum ignition energy that dust under the conditions of certain gas phase concentration fuel gas fires.
2. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that test chamber
There is vacuum meter on body.
3. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that enter chamber
It is normal pressure that the sum of the gas flow of body and the gas flow for entering high pressure tank, which just maintain cavity,.
4. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that mixer
It is equipped with mixing plant.
5. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that high pressure storage
Gas in gas tank is connected after solenoid valve with fugitive dust device, and fugitive dust device is within the cavity.
6. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that observation window
Positioned at cavity side.
7. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that accurate electricity
Spark generator is connected with ignitor, and ignitor is within the cavity.
8. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that high pressure storage
Gas tank is equipped with pressure gauge.
9. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 1, it is characterised in that vacuum pump
Outlet is connected with surge tank, and surge tank is connected with test cavity.
10. the test method of gas-particle two-phase combustible material minimum ignition energy according to claim 5, it is characterised in that solenoid valve
It is connected with control computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710965479.6A CN109668930B (en) | 2017-10-17 | 2017-10-17 | Method for testing minimum ignition energy of gas-solid two-phase combustible material |
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| CN201710965479.6A CN109668930B (en) | 2017-10-17 | 2017-10-17 | Method for testing minimum ignition energy of gas-solid two-phase combustible material |
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| CN109668930A true CN109668930A (en) | 2019-04-23 |
| CN109668930B CN109668930B (en) | 2022-06-17 |
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Cited By (2)
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| CN110297012A (en) * | 2019-06-24 | 2019-10-01 | 北京理工大学 | A kind of detection system and its method of combustible dust cloud cluster dispersion ability fuming-off temperature |
| CN116297674A (en) * | 2022-09-09 | 2023-06-23 | 冰轮环境技术股份有限公司 | System and method for simulating and calculating minimum ignition energy of combustible explosive working medium |
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| CN110297012A (en) * | 2019-06-24 | 2019-10-01 | 北京理工大学 | A kind of detection system and its method of combustible dust cloud cluster dispersion ability fuming-off temperature |
| CN110297012B (en) * | 2019-06-24 | 2020-11-27 | 北京理工大学 | System and method for detecting diffusion dynamic deflagration temperature of combustible dust cloud cluster |
| CN116297674A (en) * | 2022-09-09 | 2023-06-23 | 冰轮环境技术股份有限公司 | System and method for simulating and calculating minimum ignition energy of combustible explosive working medium |
| CN116297674B (en) * | 2022-09-09 | 2023-10-10 | 冰轮环境技术股份有限公司 | System and method for simulating and calculating minimum ignition energy of combustible explosive working medium |
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Effective date of registration: 20220525 Address after: No.218, Yan'an Third Road, Shinan District, Qingdao City, Shandong Province 266101 Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec |
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