CN2072721U - Damp-proof explosion-proof device of high-tension mutual-inductor - Google Patents
Damp-proof explosion-proof device of high-tension mutual-inductor Download PDFInfo
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- CN2072721U CN2072721U CN 90220905 CN90220905U CN2072721U CN 2072721 U CN2072721 U CN 2072721U CN 90220905 CN90220905 CN 90220905 CN 90220905 U CN90220905 U CN 90220905U CN 2072721 U CN2072721 U CN 2072721U
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- oil
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Abstract
The utility model discloses a damp-proof explosion-proof device of high-tension mutual-inductors, comprising an inner oil gas cavity (5), an outer oil gas cavity (8), a communication regenerate pipe (7), an inner dry pressure relief cavity (2), and an outer dry tank (10). The inner dry pressure relief cavity has the functions of both drying and explosion prevention. The regenerate pipe can slow down the ageing process of seal oil. The inner and the outer oil gas cavities are arranged in an up and down way to make the sealed side generate weak positive pressure to assure the reliable sealing. The utility model has the characteristics of artful design, simple structure, easy fabrication, low cost, convenient maintenance, high safe factor, small oil filling amount, good drying level, explosion prevention, and pressure relief. The utility model is also convenient and reliable.
Description
The utility model relates to a kind of moistureproof explosion-protection equipment of high-tension electricity oil-filled equipment high-voltage mutual inductor.
Current, in the power system operation, often, cause large-area power-cuts because of the electric equipment internal wetted accident of blasting, simple and crude in part because of the moistureproof explosion-protection equipment of electric power oil-filled equipment, humidity resistance difference and causing.Chinese patent 87208681 has been announced a kind of instrument transformer damp-proof device, comprise working chamber, transmit the chamber, respiratory cavity, combined system such as drying chamber and connecting tube, in its course of work, heat expansion or shrinkage because of transformer oil, working chamber can increase or reduce with the oil level that transmits chamber and respiratory cavity, the moisture overwhelming majority of respiratory cavity upper air can be stopped by pasta in the chamber, the denier moisture drying jar between transmission chamber and working chamber that sees through sealing oil comes and goes when flowing and then is absorbed and purifies, and makes unlikely the making moist of sealed insulation oil of the instrument transformer that is communicated with working chamber.But theoretically, because the transmission chamber and the respiratory cavity of this device are horizontal arrangement, it is to be in weak negative pressure state that sealed side has half the time, and the sealed thin weakness easily produces gas leakage, is unfavorable for protection against the tide.Moreover this device does not have explosion prevention function, and to because of the measure of the caused blast unguard of equipment deficiency, its harm is difficult to control.
The purpose of this utility model is exactly in order to solve the problem that prior art exists, to compensate its defect, and provide a kind of novel, and is simple in structure, cheap, safe in utilization, easy maintenance, multiple functional, can be effectively moistureproof, the moistureproof explosion-protection equipment of high-voltage mutual inductor that again can safety anti-explosive.
The utility model comprises interior outer oil-gas cavity, and outer oil-gas cavity is communicated with by regenerating tube above inner oil-gas cavity, in fill sealing oil.Respectively establish a drying chamber (jar) inside and outside the device, its inner drying chamber has drying and explosion prevention function concurrently, claim dry pressure-releasing chamber, cavity is a tubular structure, the logical instrument transformer of one end is an internal orifice, and screen pack is housed, and the logical space outerpace of the other end is a collar extension, envelope is with glass elastic vibration rupture pressure disc, and makes it to install sealing with collar extension by supported flange and rubber washer.This film is a plate-like, convex surface is to internal fault pressure source side, stressed when reaching certain value, center membrane outwards ejects and swing crushing, therefore equipment fault pressure is released adorn drier in this chamber, the upper chambers wall has the logical inner oil-gas cavity of wireway top, and the drier in the chamber can make the gas between inner oil-gas cavity and instrument transformer pasta keep dry.
The regenerating tube of outer oil-gas cavity in being communicated with, screen pack is equipped with in logical outer oil-gas cavity suitable for reading bottom, and the logical inner oil-gas cavity of end opening bottom keeps certain slit with base plate, filling regenerative agent in the pipe, sealing oil comes and goes in pipe and flows, and can slow down its ageing process through regenerative agent.
The outer oil-gas cavity liquid level is higher than the inner oil-gas cavity liquid level, and the air that its liquid level official post inner oil-gas cavity is communicated with on the instrument transformer pasta keeps weak malleation, can prevent the sealed thin weakness gas leakage that sealed side is potential, helps the instrument transformer protection against the tide.
Setting up heat insulation moisture absorption material on the top chamber inwall on the outer oil-gas cavity liquid level, as the anti-condensation layer that foamed plastics or felt class are made, is to prevent from that remaining moisture after air is by outer drying tank from condensing at this place to splash into fluid.
The inside and outside drying chamber (jar) of this device but the drier of interior loaded particles shape silica gel and so on, but in the regenerating tube also loaded particles shape silica gel use as regenerative agent.
The operation principle of this device describes below in conjunction with accompanying drawing embodiment.
Accompanying drawing is the moistureproof explosion-protection equipment structure diagram of high-voltage mutual inductor.
Among the figure: (1) internal orifice, (2) dry pressure-releasing chamber, (2) interior wireway, (4) rupture pressure disc, (5) inner oil-gas cavity, (6) regenerative agent filler, (7) regenerating tube, (8) outer oil-gas cavity, (9) outer wireway, (10) outer drying tank, (11) oil level indicator, (12) anti-condensation layer, (13) base plate lower flange.
The utility model main body outward appearance is cylinder, be welded by sheet metal volume (dashing) system, barrel, top cover, base plate and base plate lower flange are arranged, in the barrel first half one side oil level indicator (11) is arranged, opposite side peripheral hardware drying chamber (10), Lower Half has explosion-proof spout, and the flange that base plate welds below (13) can make device be connected with instrument transformer.
Inner oil-gas cavity of this device (5) and outer oil-gas cavity (8) are to be divided equally by the horizontal baffle at intermediate altitude place in the apparatus main body to form, and outer oil-gas cavity (8) is last, and inner oil-gas cavity (5) is following.There is a hole at the center of dividing plate, is communicated with regenerating tube (7) dress screen pack one end, and the global shape of regenerating tube (7) is straight-through tubulose.The other end leads to the bottom of inner oil-gas cavity (5), with base plate one all narrow slits is arranged, dress particle silica gel regenerative agent in the pipe (7), and there is regenerative agent filler (6) at base plate place in its underpart, and it is stifled that sealing oil is housed.The sealing oil of interior outer oil-gas cavity can be passed through regenerating tube (7) and come and go mobile.
This device enters outer oil-gas cavity (8) for preventing a large amount of moisture, is installing outer setting outer drying tank (10), and its end opening leads to atmosphere, and the outer wireway (9) of warp suitable for reading communicates with outer oil-gas cavity (8).Simultaneously at the anti-condensation layer of the bonding foamed plastics of outer oil-gas cavity (8) roof (12), can prevent to enter remaining moisture in the chamber (8) and on roof, condense and splash into fluid.
Inner drying chamber of this device and explosion-protection equipment are one, promptly dry pressure-releasing chamber (2), and an interior wireway of its tubular housing band (9) is in the inner oil-gas cavity (5), and an end passes and welds the dry bottom plate, and the other end passes and is welded in wallboard, becomes 90 ° of syphon shapes.Crossing the base plate end is internal orifice (1), and the removable filter net is housed, and is the port of circulation of air and pressure release gas, and loaded particles shape silica-gel desiccant thus.Cross the wallboard end and adopt supported flange that glass elastic vibration rupture pressure disc (4) is installed, this film is discoid, and thickness is suitable, have certain elasticity, convex surface is in the chamber during installation, and the edge serves as a contrast rubber gasket, when fault pressure reached the operating value of film, the stressed outside ejection of convex surface became recessed, swing crushing.This film operating pressure is low, and is broken reliable, and can observe internal desiccant moisture absorption situation by this film, is convenient in good time replacing.(3) one of interior wireways insert in the chamber (2), cross chamber wall welding, and the other end leads directly to the top of inner oil-gas cavity (5), plays the air guide effect.
Dry pressure-releasing chamber (2) can absorb the micro-moisture that liquid level is overflowed in the sealing oil, makes the instrument transformer insulating oil keep high degree of drying.Drying chamber and pressure releasing device are formed one, both simplify the structure, and have strengthened function again.
The upper air of inner oil-gas cavity (5) is communicated with the high-voltage mutual inductor upper air by interior wireway (3) and dry pressure-releasing chamber (2), suitably adjust the oil level of inner oil-gas cavity (5) and outer oil-gas cavity (8), can produce liquid level difference, make the upper air of inner oil-gas cavity (5) and instrument transformer that one weak malleation be arranged, when this device is connected with instrument transformer when air tight, then this weak malleation is kept stablely, and oil level indicator (11) just has oil level to show, if gas leakage, then oil level indicator (11) oil level can not keep.No matter install or in service, this oil level can reflect the sealing quality, and is effectively directly perceived.
The course of work branch of this device " is exhaled ", " suction " and " pressure release " three processes, and division is as follows:
" exhale ": high-voltage mutual inductor insulating oil heat expansion, wireway (3) entered inner oil-gas cavity (5) in its upper gas was crossed by internal orifice (1) drying pressure-releasing chamber (2), the interior pasta of compressing inner oil-gas cavity (5) is downward, oil enters outer oil-gas cavity (8) through the lower end of regenerating tube (7) oil seam, outer pasta is risen, and its upper gas is crossed outer drying tank (10) through outer wireway (9) and is discharged into atmosphere.
" suction ": atmosphere enters outer oil-gas cavity (8) top after the drying for the first time through outer drying tank (10), outer pasta descends, oil through regenerating tube (7) enter inner oil-gas cavity (5) make in pasta rising, pushing its upper gas is entered in the dry pressure-releasing chamber (2) by interior wireway (3), for the second time after the drying, enter high-voltage mutual inductor top from internal orifice (1), replenish the space after its oil cooling contracts.
" pressure release ": micro-aerogenesis fault, " exhaling " but the process venting, this moment oil level indicator (11) oil level higher than just often.When fault progression arrives to a certain degree or is sudden, instrument transformer internal pressure ripple passes to rupture pressure disc (4) through internal orifice (1) super-dry pressure-releasing chamber (2), when reaching operating value, outwards eject at rupture pressure disc (4) center, swing crushing, make the fault pressure releasing, the drier micelle in the dry pressure-releasing chamber (2) sheds and shows signal as newspaper.
The utility model is simple in structure, easy to manufacture, simple and convenient operation and maintenance, reliable working performance, and have the coefficient of safety height, it is few to install oil-filled amount, degree of drying is good, the explosion-proof release of pressure function of simplest and dependable is arranged, and is the moistureproof explosion-protection equipment of present optimal high-voltage mutual inductor (or power transformer), and suitable large tracts of land is promoted the use of.
Claims (4)
1, a kind of moistureproof explosion-protection equipment of high-tension electricity oil-filled equipment high-voltage mutual inductor comprises inner oil-gas cavity (5), outer oil-gas cavity (8) and outer drying tank (10), it is characterized in that:
A. adopted the dry pressure-releasing chamber (2) that has dry and explosion prevention function concurrently, cavity one end of its tubular structure is the internal orifice (1) of logical high-voltage mutual inductor, screen pack is housed, the other end is the collar extension of logical space outerpace, encapsulation rupture pressure disc (4), this film is subjected to the fragmentation of gas pressure after vibration, can make the equipment fault pressure releasing, dress drier in the dry pressure-releasing chamber (2), upper chambers wall have the logical inner oil-gas cavity (5) of wireway (3) top;
B. outer oil-gas cavity (8) and inner oil-gas cavity (5) are designed to arrange up and down, and there is liquid level difference in two chamber liquid levels, and the gas that can make inner oil-gas cavity (5) top be communicated with the instrument transformer upper space produces a weak malleation, prevent sealed side seal weak spot gas leakage;
C. adopt the regenerating tube (7) of straight-through tubulose to connect interior outer oil-gas cavity, screen pack is equipped with in its logical outer oil-gas cavity suitable for reading (8) bottom, and end opening leads to inner oil-gas cavity (5) bottom, dress regenerative agent in the pipe (7), sealing fluid come and go to flow in pipe and can slow down through regenerative agent that it is aging;
D. set up defences on outer oil-gas cavity (8) roof and coagulate layer (12), prevent that moisture in outer oil-gas cavity (8) upper air from condensing and splash into sealing fluid on roof.
2, the moistureproof explosion-protection equipment of high-voltage mutual inductor according to claim 1 is characterized in that rupture pressure disc (4) is a glass elastic vibration rupture pressure disc, and rupture pressure disc (4) is discoid, and the convex surface of film is towards dry pressure-releasing chamber (2) fault pressure source during installation.
3, the moistureproof explosion-protection equipment of high-voltage mutual inductor according to claim 1 is characterized in that the anti-condensation layer (12) on outer oil-gas cavity (8) roof is that heat-barrier material is made.
4, the moistureproof explosion-protection equipment of high-voltage mutual inductor according to claim 1 is characterized in that the drier of filling in the dry pressure-releasing chamber (2) is a particle silica gel, and the regenerative agent of filling also adopts particle silica gel in the regenerating tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90220905 CN2072721U (en) | 1990-09-21 | 1990-09-21 | Damp-proof explosion-proof device of high-tension mutual-inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90220905 CN2072721U (en) | 1990-09-21 | 1990-09-21 | Damp-proof explosion-proof device of high-tension mutual-inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072721U true CN2072721U (en) | 1991-03-06 |
Family
ID=4899207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90220905 Withdrawn CN2072721U (en) | 1990-09-21 | 1990-09-21 | Damp-proof explosion-proof device of high-tension mutual-inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356600B (en) * | 2006-03-02 | 2011-09-28 | 赖茵豪森机械制造公司 | Method of drying an air dehumidifier |
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN102723186A (en) * | 2012-06-21 | 2012-10-10 | 平高集团有限公司 | Mutual inductor and adsorber cover plate thereof |
-
1990
- 1990-09-21 CN CN 90220905 patent/CN2072721U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356600B (en) * | 2006-03-02 | 2011-09-28 | 赖茵豪森机械制造公司 | Method of drying an air dehumidifier |
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN102723186A (en) * | 2012-06-21 | 2012-10-10 | 平高集团有限公司 | Mutual inductor and adsorber cover plate thereof |
| CN102723186B (en) * | 2012-06-21 | 2015-07-01 | 平高集团有限公司 | Mutual inductor and adsorber cover plate thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |