CN2735517Y - An explosion-proof device mounted on bottom side of oil immersed transformer - Google Patents
An explosion-proof device mounted on bottom side of oil immersed transformer Download PDFInfo
- Publication number
- CN2735517Y CN2735517Y CN 200420075911 CN200420075911U CN2735517Y CN 2735517 Y CN2735517 Y CN 2735517Y CN 200420075911 CN200420075911 CN 200420075911 CN 200420075911 U CN200420075911 U CN 200420075911U CN 2735517 Y CN2735517 Y CN 2735517Y
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pipe
- explosion
- bottom side
- transmission straight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to an explosion-proof device mounted on the bottom side of an oil immersed transformer, relates to cooling the oil immersed transformers, and is used for preventing the oil storage chambers generating explosive malfunction. The explosion-proof device mounted on the bottom side of the oil immersed transformer is provided with a right angle oil pipe whose horizontal port is matched and connected with a butterfly valve that is connected with the flank of the iron slot of the bottom of the porcelain bushing, and the vertical port of the right angle oil pipe is sealed by a double-duct oil proof sealing ring and a sealing cover. The center of the upper part of the sealing cover and one end of the transmission straight rod are connected to form an integral body, and the other end of the transmission straight rod passes through the small hole of the center of the fixing plate and is matched and connected with a micro-switch sensor that is fixed on the upper surface of the fixing plate which is fixed on the right angle oil pipe by screw bolts and is positioned just above the vertical port of the right angle oil pipe. A pressing spring is sheathed outside the transmission straight rod, one end of the pressing spring is supported on the sealing cover, and the other end of the pressing spring is supported at the lower surface of the fixing plate. A rain proof cover is fixed on the upper side of the fixing plate by the screw bolts. The explosion-proof device mounted on the bottom side of the oil immersed transformer has the advantages of simple structure, quick releasing pressure and large oil drain amount.
Description
Technical field
The utility model relates to the cooling technology field of oil immersed type instrument transformer, is applied to its accumulator is produced the protection of explosive fault and then formation destructive power.
Background technology
The oil immersed type instrument transformer has a ceramic shell usually, is insulator again.The insulator upper opening, the bottom ring drops on the metal trough, contains insulating oil in the cavity; Constitute the various components and parts of primary circuit and secondary circuit, just be immersed in the insulating oil as electric capacity, former and deputy winding, iron core etc.Insulator upper opening place connects a metal expander, is connected with space in the insulator; It becomes corrugated tube shape, makes with thin stainless steel metal material, and its effect is under normal circumstances in order to adapt to the change in volume that insulating oil causes because of variations in temperature in the insulator.An osculum is opened on metal expander top, plug one sealing plug in mouthful.When the overvoltage phenomenon occurring, insulating material can be breakdown, and the discharge of appearance can make insulating oil decomposite all gases again, and this moment, metal expander was difficult to remove to alleviate pressure in the insulator by self flexible change in volume, to such an extent as to blast occurs.In order to prevent blast, Chinese patent has been announced the innovation and creation (notification number is CN 2501168Y) that are entitled as " a kind of explosion-protection equipment that is applied to the oil immersed type instrument transformer ", it is opened metal expander top osculum greatly, sealing plug is changed into the seal cover that is subjected to a stage clip effect.Its deficiency be can not avoid in the insulator, blast that the fault point, bottom produces.Its reason be the pressure of fault point discharge to need by in the insulator, the insulating oil medium transmission on top could arrive explosion-protection equipment, and pressure do not transmit do not put in place before, newly the pressure of formation has caused the generation of explosion phenomenon.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, the explosion-protection equipment that is installed on oil immersed type instrument transformer bottom side that provide in a kind of the avoiding, the generation of fault point, bottom is exploded.
The purpose of this utility model can reach by following proposal: a kind of explosion-protection equipment that is installed on oil immersed type instrument transformer bottom side, it is characterized in that it is with a right angle oil pipe, right angled oil pipe level mouth connects a butterfly valve that is connected with metal trough side, insulator bottom, and right angled oil pipe vertically mouth is sealed by two pass oil-resistant seal ring and seal cover; The center upper portion of seal cover is connecting an end of transmission straight-bar integratedly, and the aperture that the other end of transmission straight-bar passes fixed head central authorities is matched with the sensitive switch transducer that is fixed on the fixed head upper surface; Fixed head is by being bolted on the right angled oil pipe, be positioned at right angled oil pipe vertically mouthful directly over; One compression spring sleeve is outside the transmission straight-bar, and an end is against the lower surface that the other end on the seal cover is against fixed head; Fixed head top bolt one rain cover.
The utlity model has following advantage:
1, in light weight, volume is little, and is simple in structure, and cost is low;
2, oil immersed type instrument transformer producer practices midwifery easily, need only open a butterfly valve interface in instrument transformer metal trough side direction;
3, practicality is good, but large tracts of land is promoted;
4, reduced issuable explosion hazard widely, and the economic loss that causes thus.
5, release pressure is rapid, and oil drain quantity is big.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
1 is that butterfly valve 3 is that right angled oil pipe 5 is that seal cover 7 stage clips 9 are that fixed head 11 is that sensitive switch 13 is that transducer 15 is that transmission straight-bar 17 is rain covers among the figure
Embodiment
The utility model is further described below in conjunction with accompanying drawing.A kind of explosion-protection equipment that is installed on oil immersed type instrument transformer bottom side, it is with a right angle oil pipe (3), and right angled oil pipe (3) level mouth connects a butterfly valve (1), and this butterfly valve (1) other end is matched with instrument transformer bottom metal trough lateral openings.Right angled oil pipe (3) vertically mouth is sealed by two pass oil-resistant seal ring and seal cover (5); The top of seal cover (5) is connecting transmission straight-bar (15) integratedly, and it is matched with sensitive switch (11) transducer (13) that is fixed on fixed head (9) upper surface that transmission straight-bar (15) end passes the central aperture of fixed head (9); Fixed head (9) is by being bolted on the right angled oil pipe (3), be positioned at right angled oil pipe (3) vertically mouthful directly over; One stage clip (7) is enclosed within outside the transmission straight-bar (15), and an end is against seal cover (5) and goes up the lower surface that the other end is against fixed head (9); Fixed head (9) top bolt one rain cover (17).
The fault point is in instrument transformer, during the bottom, pressure at first arrives seal cover (5) by butterfly valve (1) through right angled oil pipe (3), this moment, enough big pressure made further compression of stage clip (7), transmission straight-bar (15) moves up and promotes the horizontal fine motion of transducer (13) left, and then make sensitive switch (11) connect alarm circuit, send warning, the expression instrument transformer breaks down.When fault is eliminated, the effect that upheld by stage clip (7), seal cover (5) falls after rise with the double sealing circle together with vertically mouthful sealing of right angled oil pipe (3), simultaneously the transducer (13) of sensitive switch (11) thus return to normal and stop to report to the police.
Claims (2)
1, a kind of explosion-protection equipment that is installed on oil immersed type instrument transformer bottom side, it is characterized in that it is with a right angle oil pipe (3), right angled oil pipe (3) level mouth connects a butterfly valve (1) that is connected with metal trough side, insulator bottom, and right angled oil pipe (3) vertically mouth is sealed by two pass oil-resistant seal ring and seal cover (5); The center upper portion of seal cover (5) is connecting an end of transmission straight-bar (15) integratedly, and the other end of transmission straight-bar (15) passes the aperture of fixed head (9) central authorities; Fixed head (9) is by being bolted on the right angled oil pipe (3), be positioned at right angled oil pipe (3) vertically mouthful directly over; One stage clip (7) is enclosed within outside the transmission straight-bar (15), and an end is against on the seal cover (5), and the other end is against the lower surface of fixed head (9); Fixed head (9) top bolt one rain cover (17).
2, a kind of explosion-protection equipment that is installed on oil immersed type instrument transformer bottom side according to claim 1 is characterized in that the fixed head upper surface installs and fixes a sensitive switch (11), and its transducer (13) is matched with transmission straight-bar (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420075911 CN2735517Y (en) | 2004-07-03 | 2004-07-03 | An explosion-proof device mounted on bottom side of oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420075911 CN2735517Y (en) | 2004-07-03 | 2004-07-03 | An explosion-proof device mounted on bottom side of oil immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735517Y true CN2735517Y (en) | 2005-10-19 |
Family
ID=35265386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420075911 Expired - Fee Related CN2735517Y (en) | 2004-07-03 | 2004-07-03 | An explosion-proof device mounted on bottom side of oil immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735517Y (en) |
-
2004
- 2004-07-03 CN CN 200420075911 patent/CN2735517Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20100703 |