CN102788817A - Research method of ultralow temperature gas explosion experiment under ultralow temperature environment - Google Patents
Research method of ultralow temperature gas explosion experiment under ultralow temperature environment Download PDFInfo
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- CN102788817A CN102788817A CN2012103045005A CN201210304500A CN102788817A CN 102788817 A CN102788817 A CN 102788817A CN 2012103045005 A CN2012103045005 A CN 2012103045005A CN 201210304500 A CN201210304500 A CN 201210304500A CN 102788817 A CN102788817 A CN 102788817A
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- 238000004880 explosion Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000011160 research Methods 0.000 title claims abstract description 21
- 238000002474 experimental method Methods 0.000 title abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 78
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000000153 supplemental effect Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 11
- 230000009194 climbing Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 239000003245 coal Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention discloses a research method of an ultralow temperature gas explosion experiment under an ultralow temperature environment. The research method comprises the following steps: firstly, vacuumizing an exploding tank; secondly, charging a combustible gas to be detected into the exploding tank and cooling; and finally, igniting the combustible gas to be detected, and acquiring and storing the explosion characteristic parameter data in the exploding tank. The research method has the following advantages: aiming at the research method of the ultralow temperature gas explosion experiment under the ultralow temperature environment, the problem that an ultralow temperature gas explosion experiment method can be carried out under the ultralow temperature environment is mainly solved; and aiming at detecting explosion limit of the combustible gas under the ultralow temperature environment, detection and experiment research work for the parameters of the combustible gas under the ultralow temperature environment, such as exploding pressure and pressure ascent rate and the like. The research method of the ultralow temperature gas explosion experiment under the ultralow temperature environment mainly aims at detecting the explosion limit of coal bed methane under the ultralow temperature environment by a cryogenic liquefying process and detecting the exploding characteristic parameters of other industrial combustible gases under the ultralow temperature environment.
Description
Technical field
The present invention relates to the industrial safety field, particularly a kind ofly can directly be used for industrial processes and relate to the experiment research that characteristic parameter such as the flammable gas explosion limit under the ultra-low temperature surroundings condition is measured.
Background technology
At present; Still there is not standard both at home and abroad about flammable gas explosion characteristic test research aspect under the particular surroundings; Only there is State Standard of the People's Republic of China .GB/T 12474-2008 " flammable gas explosion limit assay method in the air " in China, this standard code the assay method of the flammable gas explosion limit under the normal temperature and pressure conditions.But, also lack the corresponding techniques means for the mensuration of ultralow temperature (below 0 ℃) environment flammable gas explosion limits.At present, though there is the relevant device to flammable gas explosion characteristic research under high temperature or the hyperbaric environment in China part scientific research institutions, can not realize flammable gas explosion characteristic research under the ultra-low temperature surroundings.
Therefore be badly in need of a kind of experimental technique that under ultra-low temperature surroundings, carries out the flammable gas explosion characteristic measurement.
Summary of the invention
In view of this, technical matters to be solved by this invention provides a kind of experimental technique that under ultra-low temperature surroundings, carries out the flammable gas explosion characteristic measurement.
The objective of the invention is to realize through following technical scheme:
Flammable gas explosion characteristic test research method under the ultra-low temperature surroundings provided by the invention may further comprise the steps:
S1: the tank body that will explode is evacuated;
S2: inflammable gas to be measured is charged into the blast tank body;
S3: the blast tank body is lowered the temperature;
S4: before the igniting, measure and the interior combustable gas concentration of record tank body, environmental pressure and environment temperature numerical value;
S5: light inflammable gas to be measured, and gather blast tank body implode characterisitic parameter data;
S6: preserve the blast characteristics supplemental characteristic.
Further, the vacuum tightness≤0.02MPa of said blast tank body; Range of temperature is-180 ℃～25 ℃ in the said blast tank body.
Further, said blast characteristics supplemental characteristic comprises flammable gas explosion maximum pressure climbing speed, flammable gas explosion pressure data and combustable gas concentration value; Affiliated ambient parameter data comprises the ambient temperature data and the environmental pressure data of inflammable gas combination gas in the blast tank body; The collection of each supplemental characteristic is to realize the collection to gas temperature in the tank body through thermal resistance in the said blast tank body; Realize collection through pressure transducer, and realize collection combustable gas concentration through the combustable gas concentration sensor to gaseous tension and pressure climbing speed in the blast tank body; Trigger the collection of blast characteristics supplemental characteristic when inflammable gas to be measured is lighted in the said blast tank body.
Further, the cooling of said blast tank body is the change of adopting environment temperature in the liquid nitrogen cooling technology realization blast tank body, and with polyurethane material parcel blast tank body, makes the reduction of inflammable gas temperature and keep stable.
Further, said combustable gas concentration variation range is 0%～100%, and the oxygen concentration variation range is 0%～100%; Inflammable gas to be measured is lighted through the spark bar and is realized in the said blast tank body.
The invention has the advantages that: the present invention is directed to flammable gas explosion characteristic test research method under the ultra-low temperature surroundings.Mainly solved: 1. flammable gas explosion characteristic test system under the ultra-low temperature surroundings; 2. a correlation technique difficult problem such as experiment flow.Existing correlation technique is primarily aimed at the determination techniques of the flammable gas explosion limit under the normal temperature and pressure conditions and other blast characteristic parameter; The present invention is directed to the mensuration of the flammable gas explosion limit under the ultra-low temperature surroundings, also can carry out ultra-low temperature surroundings flammable gas explosion pressure and isoparametric mensuration of pressure climbing speed and experimental study work.Mensuration and other the industrial inflammable gass that the is primarily aimed at gas utilization cryogenic liquefying technology ultra-low temperature surroundings coal-seam gas explosion limits mensuration of characteristic parameter of under ultra-low temperature surroundings, exploding.
Other advantage of the present invention, target and characteristic will be set forth in instructions subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating of hereinafter.Target of the present invention and other advantage can be passed through following instructions, claims, and the structure that is particularly pointed out in the accompanying drawing realizes and obtains.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
The test method schematic flow sheet that Fig. 1 provides for the embodiment of the invention.
Embodiment
Below will combine accompanying drawing, the preferred embodiments of the present invention will be carried out detailed description; Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
The test method schematic flow sheet that Fig. 1 provides for the embodiment of the invention, as shown in the figure: as to the invention provides flammable gas explosion characteristic test research method under a kind of ultra-low temperature surroundings, may further comprise the steps:
S1: the tank body that will explode is evacuated;
S2: inflammable gas to be measured is charged into the blast tank body;
S3: the blast tank body is lowered the temperature;
S4: before the igniting, measure and the interior combustable gas concentration of record tank body, environmental pressure and environment temperature numerical value;
S5: light inflammable gas to be measured, and gather blast tank body implode characterisitic parameter data;
S6: preserve the blast characteristics supplemental characteristic.
Vacuum tightness≤the 0.02MPa of said blast tank body; Range of temperature is-180 ℃～25 ℃ in the said blast tank body.
Said blast characteristics supplemental characteristic comprises flammable gas explosion maximum pressure climbing speed, flammable gas explosion pressure data and combustable gas concentration value; Affiliated ambient parameter data comprises the ambient temperature data and the environmental pressure data of inflammable gas combination gas in the blast tank body; The collection of each supplemental characteristic is to realize the collection to gas temperature in the tank body through thermal resistance in the said blast tank body; Realize collection through pressure transducer, and realize collection combustable gas concentration through the combustable gas concentration sensor to gaseous tension and pressure climbing speed in the blast tank body; Trigger the collection of blast characteristics supplemental characteristic when inflammable gas to be measured is lighted in the said blast tank body.
The cooling of said blast tank body is the change of adopting environment temperature in the liquid nitrogen cooling technology realization blast tank body, and with polyurethane material parcel blast tank body, makes the reduction of inflammable gas temperature and keep stable.
Said combustable gas concentration variation range is 0%～100%, and the oxygen concentration variation range is 0%～100%; Inflammable gas to be measured is lighted through the spark bar and is realized in the said blast tank body.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1. flammable gas explosion characteristic test research method under the ultra-low temperature surroundings is characterized in that: may further comprise the steps:
S1: the tank body that will explode is evacuated;
S2: inflammable gas to be measured is charged into the blast tank body;
S3: the blast tank body is lowered the temperature;
S4: before the igniting, measure and the interior combustable gas concentration of record tank body, environmental pressure and environment temperature numerical value;
S5: light inflammable gas to be measured, and gather blast tank body implode characterisitic parameter data;
S6: preserve the blast characteristics supplemental characteristic.
2. flammable gas explosion characteristic test research method under the ultra-low temperature surroundings according to claim 1 is characterized in that: the vacuum tightness≤0.02MPa of said blast tank body; Range of temperature is-180 ℃～25 ℃ in the said blast tank body.
3. flammable gas explosion characteristic test research method under the ultra-low temperature surroundings according to claim 2 is characterized in that: said blast characteristics supplemental characteristic comprises flammable gas explosion maximum pressure climbing speed, flammable gas explosion pressure data and combustable gas concentration value; Affiliated ambient parameter data comprises the ambient temperature data and the environmental pressure data of inflammable gas combination gas in the blast tank body; The collection of each supplemental characteristic is to realize the collection to gas temperature in the tank body through thermal resistance in the said blast tank body; Realize collection through pressure transducer, and realize collection combustable gas concentration through the combustable gas concentration sensor to gaseous tension and pressure climbing speed in the blast tank body; Trigger the collection of blast characteristics supplemental characteristic when inflammable gas to be measured is lighted in the said blast tank body.
4. flammable gas explosion characteristic test research method under the ultra-low temperature surroundings according to claim 3; It is characterized in that: the cooling of said blast tank body is to adopt the liquid nitrogen cooling technology to realize the change of environment temperature in the blast tank body; And, make the reduction of inflammable gas temperature and keep stable with polyurethane material parcel blast tank body.
5. flammable gas explosion characteristic test research method under the ultra-low temperature surroundings according to claim 4 is characterized in that: said combustable gas concentration variation range is 0%～100%, and the oxygen concentration variation range is 0%～100%; Inflammable gas to be measured is lighted through the spark bar and is realized in the said blast tank body.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090089A (en) * | 2014-07-03 | 2014-10-08 | 中国人民解放军后勤工程学院 | Grading early warning method of oil gas hazard source of oil house in cave |
| CN104749218A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Device and method for testing explosion properties of flammable gases at ultralow temperature |
| CN104749217A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Ultralow temperature combustible gas explosion minimum ignition energy testing system and method |
| CN105203596A (en) * | 2015-11-03 | 2015-12-30 | 中煤科工集团重庆研究院有限公司 | Low-temperature gas explosion characteristic test system |
| CN105259207A (en) * | 2015-11-03 | 2016-01-20 | 中煤科工集团重庆研究院有限公司 | Gas low-temperature heat exchange performance test method |
| CN105372404A (en) * | 2015-11-03 | 2016-03-02 | 中煤科工集团重庆研究院有限公司 | Low-temperature gas explosion characteristic test method |
| CN106596636A (en) * | 2016-12-16 | 2017-04-26 | 中国矿业大学 | Device and method for identifying mixed gas based on Coward explosion triangle |
| CN107402232A (en) * | 2017-08-11 | 2017-11-28 | 中北大学 | The dynamic blast absolute rating assay method of fuel gas |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090089A (en) * | 2014-07-03 | 2014-10-08 | 中国人民解放军后勤工程学院 | Grading early warning method of oil gas hazard source of oil house in cave |
| CN104090089B (en) * | 2014-07-03 | 2016-06-29 | 中国人民解放军后勤工程学院 | A kind of cavern oil depot oil gas dangerous matter sources grading forewarning system method |
| CN104749218A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Device and method for testing explosion properties of flammable gases at ultralow temperature |
| CN104749217A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Ultralow temperature combustible gas explosion minimum ignition energy testing system and method |
| CN104749217B (en) * | 2015-03-27 | 2018-06-05 | 中国石油大学(华东) | Flammable gas explosion minimum ignition energy tests system and method under ultralow temperature |
| CN104749218B (en) * | 2015-03-27 | 2018-11-02 | 中国石油大学(华东) | Flammable gas explosion characteristic test device and method under ultralow temperature |
| CN105203596A (en) * | 2015-11-03 | 2015-12-30 | 中煤科工集团重庆研究院有限公司 | Low-temperature gas explosion characteristic test system |
| CN105259207A (en) * | 2015-11-03 | 2016-01-20 | 中煤科工集团重庆研究院有限公司 | Gas low-temperature heat exchange performance test method |
| CN105372404A (en) * | 2015-11-03 | 2016-03-02 | 中煤科工集团重庆研究院有限公司 | Low-temperature gas explosion characteristic test method |
| CN105203596B (en) * | 2015-11-03 | 2018-06-29 | 中煤科工集团重庆研究院有限公司 | A kind of low temperature gas explosion characteristic test system |
| CN106596636A (en) * | 2016-12-16 | 2017-04-26 | 中国矿业大学 | Device and method for identifying mixed gas based on Coward explosion triangle |
| CN107402232A (en) * | 2017-08-11 | 2017-11-28 | 中北大学 | The dynamic blast absolute rating assay method of fuel gas |
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Inventor after: Hu Qianting Inventor after: Si Rongjun Inventor after: Wang Ziliang Inventor after: Li Runzhi Inventor before: Hu Qianting Inventor before: Si Rongjun Inventor before: Li Runzhi Inventor before: Wang Lei |
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Address after: Department of City Road, Jiulongpo District, Chongqing city science and technology Erlang Metro 400039 No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: Department of City Road, Jiulongpo District, Chongqing city science and technology Erlang Metro 400039 No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
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