CN105092642B - Liquid mixture explosion limit method of testing - Google Patents
Liquid mixture explosion limit method of testing Download PDFInfo
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- CN105092642B CN105092642B CN201510493529.6A CN201510493529A CN105092642B CN 105092642 B CN105092642 B CN 105092642B CN 201510493529 A CN201510493529 A CN 201510493529A CN 105092642 B CN105092642 B CN 105092642B
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Abstract
The present invention relates to a kind of liquid mixture explosion limit method of testing, mainly solves the problems, such as test result inaccuracy in the prior art.The present invention is by using a kind of liquid mixture explosion limit method of testing, liquid mixture explosion limit test is carried out using liquid mixture explosion limit test device, sample is added in the sample adding cup of the test device, control the temperature of sample adding cup and thermostatic chamber, the control to the gas phase of testing liquid and the mixture strength of air is realized by the control to temperature and time of volatilizing, then igniting is tested, the technical scheme for observing test result by observation window preferably solves above mentioned problem, in being tested available for liquid mixture explosion limit.
Description
Technical field
The present invention relates to a kind of liquid mixture explosion limit method of testing.
Background technology
Method currently used for testing explosion limit is mainly according to GBT 21844-2008《Compound (steam and gas)
The standard test method of inflammability concentration limit》、GB/T 12474-2008《Combustible gas explosion limit assay method in air》
With ASTM E 681-04《Chemicals (steam and gas) explosion limit standard method of test》Etc. method of testing, mainly for gas
Body or steam.CN201010509028.X is related to a kind of combustible gas explosion limit test system in non-standard state, its feature
It is that it includes air distributing device, destructor, temperature control device, data acquisition processing device；The destructor includes explosion-proof tank body
And heat insulation sheath, heating element heater is installed between explosion-proof tank body and heat insulation sheath, dividing plate is installed in explosion-proof tank body, dividing plate will be anti-
The inner chamber of quick-fried tank body is separated into gas buffer room and gas explosion chamber, and conducting gas buffer room and gas burst are provided with dividing plate
The magnetic valve of room, the input port of destructor are connected with gas buffer room, and described input port is also other to be connected to vavuum pump；Institute
It is provided with that compensator or trimmer pressure sensor is gentle to rush temperature sensor in the gas buffer room stated, is installed in described gas burst room
There are temperature sensor before exploding, pressure sensor, igniter and the blast pressure sensor as Exploding test before blast.
Existing method there are problems that in the test applied to liquid mixture, such as：1. contain in liquid mixture
During water, rear sample introduction is vacuumized by existing method of testing so that during normal use the less water volatile quantity of volatile quantity without
Expand in shape, test result is influenceed very big.Even if 2. be all flammable organic matter in liquid mixture, measurement when
Wait, vacuumize rear sample introduction and make it that the composition of steam and liquid mixture are producing, during storage, transport and use during test
Obvious difference be present in the gas phase composition to volatilize naturally, cause existing method of testing test result apply chemicals production,
It is not very accurate during storage, transport and use.
The present invention targetedly solves the problem.
The content of the invention
The technical problems to be solved by the invention be in the prior art test result inaccuracy the problem of, there is provided it is a kind of new
Liquid mixture explosion limit method of testing.This method is used in the test of liquid mixture explosion limit, has test result accurate
The advantages of true.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of liquid mixture explosion limit test side
Method, liquid mixture explosion limit test is carried out using liquid mixture explosion limit test device, the test device is main
Including firing storehouse, quick heated constant temperature room, thermostatic chamber, sample adding cup, fire orlop portion and be connected with quick heated constant temperature ceiling portion, add
Sample cup is positioned in quick heated constant temperature room, and is communicated with firing storehouse, in the region that sample adding cup communicates with quick heated constant temperature room
Moveable isolation baffle plate is set, fires position in storehouse in thermostatic chamber, spring is fixed at the top of thermostatic chamber, and with buffering steel disc one end
It is connected, the buffering steel disc other end is fixed on rubber cover plate, and rubber cover plate is positioned at the top of thermostatic chamber, temperature sensor and igniting
Head is inserted in by rubber cover plate to be fired in storehouse, and thermostatic chamber side wall is provided with observation window, fires the top of the warehouse and is provided with thieff hatch；Described
Sample is added in the sampling cup of test device, controls the temperature of sample adding cup and thermostatic chamber, passes through the control to temperature and volatilization time
System realizes the control to the gas phase of testing liquid and the mixture strength of air, and then igniting is tested, and is seen by observation window
Examine test result.
In above-mentioned technical proposal, it is preferable that the orlop portion that fires is provided with agitator.
In above-mentioned technical proposal, it is preferable that the specification of described igniter head meets GB/T 12474-2008《It is flammable in air
Gas explosion limit assay method》In requirement to igniting.
In above-mentioned technical proposal, it is preferable that the storehouse that fires is glass cylinder.
In above-mentioned technical proposal, it is preferable that take appropriate test mixing gas to analyze the concentration of gaseous mixture before igniting.
When this method avoids preparing the mixed vapour of flammable vapor and air in existing method of testing, liquid, aqueous sample water
Volatilization diffusing capacity is divided to be significantly higher than the actual volatile quantity during chemicals production, storage, transport and use；Avoid existing test
When the mixed vapour of flammable vapor and air is prepared in method, the volatile quantity of each component and chemicals production in liquid mixture,
There is marked difference in the actual volatile quantity during storage, transport and use, test result has more to the production and living of reality
Directive significance, achieve preferable technique effect.
Brief description of the drawings
Fig. 1 is the structural representation of device of the present invention.
In Fig. 1：
1- fires storehouse 7- rubber cover plate 13- observation windows
2- thermostatic chambers 8- buffers steel disc
The quick heated constant temperature room 9- thieff hatch of 3-
4- sample adding cup 10- temperature sensors
5- isolation baffle plate 11- igniter head
6- agitator 12- springs
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
A kind of liquid mixture explosion limit method of testing, using test device as shown in Figure 1, fire orlop portion with it is fast
Fast heated constant temperature ceiling portion is connected, and sample adding cup is positioned in quick heated constant temperature room, and is communicated with firing storehouse, in sample adding cup and soon
The region that fast heated constant temperature room communicates sets moveable isolation baffle plate, fires position in storehouse in thermostatic chamber, spring is fixed on constant temperature
Ceiling portion, and be connected with buffering steel disc one end, the buffering steel disc other end is fixed on rubber cover plate, and rubber cover plate is positioned over constant temperature
Ceiling portion, temperature sensor and igniter head are inserted in by rubber cover plate and fired in storehouse, and thermostatic chamber side wall is provided with observation window, fires
The top of the warehouse is provided with thieff hatch
Specific implementation of the patent scheme is：
(1) specification of critical piece：
1. firing storehouse uses diameter 19cm, high 18cm glass cylinder.
2. sample adding cup uses diameter 10cm, high 5cm glass.
3. agitator uses diameter 6cm steel disc.
4. the specification of igniter head should meet GB/T 12474-2008《Combustible gas explosion limit assay method in air》In
Requirement to igniting.
(2) testing procedure：
1. device is connected, thermostatic chamber sets and arrives target temperature；
2. sample is added under normal pressure in sample adding cup, set quick heated constant temperature room temperature to predicted temperature (liquid it is quick-fried
Fried high-low limit can correspond to high-low limit temperature of exploding accordingly), open isolation baffle plate, turn on agitator, when record volatilizees
Between；
3. closing isolation baffle plate, stirring balance 5-10min, agitator, sampling are closed；
4. light a fire；
5. flame propagation is seen whether.
Obviously, this method solves the explosion limit moisture pair that existing tester tests liquid, aqueous mixture well
The composition of steam and liquid mixture in production, storage, transport and use when test result influences the problem of very big and test
During the gas phase composition to volatilize naturally obvious difference, the insignificant problem of test result be present.Test result is accurate, right
Actual production and living have more directive significance.
Claims (2)
1. a kind of liquid mixture explosion limit method of testing, liquid is carried out using liquid mixture explosion limit test device and mixed
Compound explosion limit is tested, and the test device mainly includes firing storehouse, quick heated constant temperature room, thermostatic chamber, sample adding cup, fires
Orlop portion is connected with quick heated constant temperature ceiling portion, and sample adding cup is positioned in quick heated constant temperature room, and is communicated with firing storehouse,
Region that sample adding cup communicates with quick heated constant temperature room sets moveable isolation baffle plate, fires position in storehouse in thermostatic chamber, spring
It is fixed at the top of thermostatic chamber, and is connected with buffering steel disc one end, the buffering steel disc other end is fixed on rubber cover plate, rubber cover plate
It is positioned at the top of thermostatic chamber, temperature sensor and igniter head are inserted in by rubber cover plate and fired in storehouse, and thermostatic chamber side wall is provided with
Observation window, fire the top of the warehouse and be provided with thieff hatch；Sample is added in the sampling cup of the test device, controls sample adding cup and constant temperature
The temperature of room, the control to the gas phase of testing liquid and the mixture strength of air is realized by the control to temperature and time of volatilizing
System, then igniting are tested, and test result is observed by observation window；The orlop portion that fires is provided with agitator；It is described to fire
Storehouse is glass cylinder；Appropriate test mixing gas is taken to analyze the concentration of gaseous mixture before igniting.
2. liquid mixture explosion limit method of testing according to claim 1, it is characterised in that the specification of described igniter head
Meet GB/T 12474-2008《Combustible gas explosion limit assay method in air》In requirement to igniting.
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| CN201510493529.6A CN105092642B (en) | 2015-08-13 | 2015-08-13 | Liquid mixture explosion limit method of testing |
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| CN201510493529.6A CN105092642B (en) | 2015-08-13 | 2015-08-13 | Liquid mixture explosion limit method of testing |
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| CN105092642B true CN105092642B (en) | 2017-12-05 |
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| CN106324033A (en) * | 2016-08-16 | 2017-01-11 | 西安近代化学研究所 | Visualized explosive cooking-off and gas product analysis device |
| CN109668931A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | The quickly device and method of test fuel gas firing temperature |
| CN110940698A (en) * | 2018-09-06 | 2020-03-31 | 中国石油化工股份有限公司 | Explosion limit testing device for difficult-to-volatilize liquid and application thereof |
| CN109884117B (en) * | 2019-03-29 | 2021-11-30 | 上海化工研究院有限公司 | Pressurized-water buffering type explosiveness testing device |
| CN111879819A (en) * | 2020-07-31 | 2020-11-03 | 上海化工研究院有限公司 | Closed-loop circulating type volatile liquid explosion limit measuring device |
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| EP0486980B1 (en) * | 1990-11-23 | 1996-05-15 | Werner Dr. Grabner | Method and apparatus for measuring the flash point of liquids and solids |
| CN2215084Y (en) * | 1995-03-21 | 1995-12-13 | 高承孝 | Portable petroleum liquid fuel low-pressure vaporization control box |
| US6435710B1 (en) * | 1998-08-26 | 2002-08-20 | Fauske & Associates, Inc. | Foam detector apparatus and method |
| CN2742434Y (en) * | 2004-11-10 | 2005-11-23 | 鲁德林 | Tester for petroleum flash point |
| CN101968458B (en) * | 2010-09-14 | 2013-06-26 | 中国石油化工股份有限公司 | Blasting risk testing device for liquid phase reaction system and using method thereof |
| CN101975717B (en) * | 2010-10-18 | 2011-11-09 | 南京工业大学 | Combustible gas explosion limit test system under non-standard state |
| CN202614707U (en) * | 2011-10-19 | 2012-12-19 | 中国石油化工股份有限公司 | Device for explosiveness testing of combustible gas and steam at high temperature and high pressure |
| CN102937603B (en) * | 2012-10-19 | 2016-04-06 | 中国石油化工股份有限公司 | High Temperature High Pressure explosion limits tester, measures method and the application of explosion limits |
| CN102937604A (en) * | 2012-10-23 | 2013-02-20 | 中国石油化工股份有限公司 | Explosion limit determining device and determining method |
| CN102928466B (en) * | 2012-10-25 | 2015-01-07 | 四川威特龙消防设备有限公司 | Oil-gas explosive critical parameter testing device and method |
| CN202870017U (en) * | 2012-10-25 | 2013-04-10 | 四川威特龙消防设备有限公司 | Oil-gas explosion critical parameter testing device |
| CN204203148U (en) * | 2014-10-22 | 2015-03-11 | 中国石油化工股份有限公司 | Containing the vapour explosion limit Simplified Test Equipment of volatile-resistant substance mixing material |
| CN104792823B (en) * | 2015-04-20 | 2018-01-12 | 中国石油化工股份有限公司青岛安全工程研究院 | The measure device of gas phase explosive characteristic in course of reaction |
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