SU649983A1 - Method of evaluating explosion-proofness of electric equipment with liquid dielectric - Google Patents
Method of evaluating explosion-proofness of electric equipment with liquid dielectricInfo
- Publication number
- SU649983A1 SU649983A1 SU762347312A SU2347312A SU649983A1 SU 649983 A1 SU649983 A1 SU 649983A1 SU 762347312 A SU762347312 A SU 762347312A SU 2347312 A SU2347312 A SU 2347312A SU 649983 A1 SU649983 A1 SU 649983A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- liquid dielectric
- explosion
- proofness
- electric equipment
- dielectric
- Prior art date
Links
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- Testing Relating To Insulation (AREA)
Description
измен ет концентрацию испытательной газовой смеси в камере, делает ее невзрывоопасной или служит ингибитором дл указанной газовой смеси.changes the concentration of the test gas mixture in the chamber, makes it non-explosive, or serves as an inhibitor for the specified gas mixture.
В результате этого при испытани х не получаетс правильной оценки взрывозащищенности .As a result of this, the tests do not give a correct assessment of explosion protection.
Кроме того, дл проведени испытаний требуютс дорогосто щее громоздкое оборудование (взрывные камеры), специальные газы, такие, как метан, водород; испыта .ни провод тс длительное врем .In addition, expensive bulky equipment (explosion chambers), special gases such as methane, hydrogen are required for testing; tested for a long time.
Цель изобретени - повышение точности оценки и упрощение испытаний электрооборудовани с жидким диэлектриком, температура всиыщки паров и газов разложени которого ниже температуры всиыщки газовой среды, дл работы в которой предназначено электрооборудование.The purpose of the invention is to improve the accuracy of evaluation and simplify the tests of electrical equipment with a liquid dielectric, the temperature of the vapor pressure and vapor decomposition of which is lower than the temperature of the gas medium for which the electrical equipment is intended.
Цель достигаетс тем, что по предлагаемому способу оценку взрывозащищенностн электрооборудовани с жидким диэлектриком в газовой среде производ т путем определени веро тности воспламенение газовой среды от электрических дуг и искр, возникающих при вклаочении и отключении тока электрооборудовани , по веро тности ио вленц на поверхности диэлектрика пламени паров и газов разложени диэлектрика в атмосфере воздуха.The goal is achieved in that according to the proposed method, the assessment of explosion-proof electrical equipment with a liquid dielectric in a gaseous medium is made by determining the probability of ignition of the gaseous medium from electric arcs and sparks arising from the insertion and disconnection of the current of electrical equipment on the surface of a dielectric flame vapor and dielectric decomposition gases in air.
При проведении оценки производитс инициаци электрической дуги, возникающей при включении и отключении тока испытываемого электрооборудовани .During the assessment, an electric arc is initiated that occurs when the current to be tested is switched on and off.
Пары и продукты разложени жидкого диэлектрика, выход на его поверхность, расщир ютс , и в процессе расщирени ихThe vapors and decomposition products of the liquid dielectric, the surface of the dielectric, are expanded, and in the process of their expansion
концентраци в воздущной атмосфере проходит через все значени - от 100 до 0%. В результате над поверхностью жидкого диэлектрика во врем проведени оценки существует взрывоопасна парогазова смесь, котора более опасна и воспламен етс лучще, чем смесь с производственной газовой средой.concentration in the air atmosphere passes through all values - from 100 to 0%. As a result, there is an explosive vapor-gas mixture above the surface of the liquid dielectric, which is more dangerous and ignites better than the mixture with the production gas medium.
Ф о р м л а изобретени F o rmly inventions
Способ оценки взрывозащищенности электрооборудовани с жидким диэлектриком в газовой среде, заключающийс в определении веро тности воспламенени от электрических дуг и искр, возникающих при включении и отключении тока электрооборудовани , отличающийс тем, что, с целью повыщени точности и упрощени оценки взрывозащищенности электрообор довани с диэлектриком, температура вспыщки паров и газов разложени которого температуры вспыщки про изводственной газовой среды, дл работы.A method for evaluating the explosion-proof electrical equipment with a liquid dielectric in a gaseous environment, which consists in determining the likelihood of ignition from electric arcs and sparks arising from switching on and off electrical equipment current, characterized in that, in order to improve the accuracy and simplify the evaluation of the explosion-proof electrical equipment with a dielectric, temperature flashes of vapor and gas decomposition of which the temperature of the flash of the production gaseous medium for operation.
в которой предназначено электрооборудование , определ ют веро тность по влени г| на поверхности диэлектрика пламеии паро:; и газов разложени диэлектрика в атмосфере воздуха.in which the electrical equipment is intended, the probability of occurrence g | on the surface of the dielectric of the flare vapor :; and dielectric decomposition gases in air.
Р1сточники информации, прин тые во внимание при экспертизе:Information sources taken into account during the examination:
1.Авторское свидетельство СССР .Nb 144819, кл. G 01 N 25/50, 1962.1. Author's certificate of the USSR .Nb 144819, cl. G 01 N 25/50, 1962.
2.РТМ «Оборудование электротехническое взрывозащищенное и рудничное. Методы испытаний ОАА 688013 -71. М., 1971, с. 43--46.2.RTM "Equipment electrotechnical explosion-proof and mine. Test methods OAA 688013 -71. M., 1971, p. 43--46.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762347312A SU649983A1 (en) | 1976-03-25 | 1976-03-25 | Method of evaluating explosion-proofness of electric equipment with liquid dielectric |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762347312A SU649983A1 (en) | 1976-03-25 | 1976-03-25 | Method of evaluating explosion-proofness of electric equipment with liquid dielectric |
Publications (1)
Publication Number | Publication Date |
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SU649983A1 true SU649983A1 (en) | 1979-02-28 |
Family
ID=20656785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762347312A SU649983A1 (en) | 1976-03-25 | 1976-03-25 | Method of evaluating explosion-proofness of electric equipment with liquid dielectric |
Country Status (1)
Country | Link |
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SU (1) | SU649983A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105738193A (en) * | 2014-12-08 | 2016-07-06 | 天津航天瑞莱科技有限公司 | High pressure container mechanical environment test safety protection method |
-
1976
- 1976-03-25 SU SU762347312A patent/SU649983A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105738193A (en) * | 2014-12-08 | 2016-07-06 | 天津航天瑞莱科技有限公司 | High pressure container mechanical environment test safety protection method |
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