CN201758065U - Explosion-resistant type transformer sleeve - Google Patents
Explosion-resistant type transformer sleeve Download PDFInfo
- Publication number
- CN201758065U CN201758065U CN2010201094821U CN201020109482U CN201758065U CN 201758065 U CN201758065 U CN 201758065U CN 2010201094821 U CN2010201094821 U CN 2010201094821U CN 201020109482 U CN201020109482 U CN 201020109482U CN 201758065 U CN201758065 U CN 201758065U
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- Prior art keywords
- oil
- sleeve
- oil conservator
- chassis
- explosion
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Abstract
The utility model discloses a explosion-resistant type transformer sleeve, mainly comprising an oil conservator, an upper porcelain sleeve, a lower porcelain sleeve, a connecting flange, and a capacitance core, The technique characteristics of the transformer sleeve are: the tank body of the oil conservator is formed by a chassis, an outer cover, and a top cover, a metal corrugated compensating body is disposed in the tank body, the upper end of the compensating body is provided with a sealing cover, the bottom end is fixedly provided with a chassis, the tank body is communicated with the sleeve inner chamber via the chassis. cabinet inner insulating oil always keep a state of being full, and is provided with pressure-fired characteristic. In operation, with rising or lowering of oil temperature, the metal corrugated compensating body contracts or expands, changing volume of oil in the oil conservator, and reaching purpose of volume compensation. Via a node oil level gauge on the oil conservator, change conditions of oil level can be visually shown. a pressure relief device is disposed in the oil conservator, when the oil level exceeds the highest limit, the pressure relief device makes motion to release hypertension, prevent explosion of sleeve, and ensure safety operation.
Description
Technical field:
The utility model relates to a kind of sleeve pipe, particularly a kind of explosion-proof transformer sleeve that is applied in the electric power system.
Background technology:
In power equipment, sleeve pipe is a significant components of transformer, and the voltage that is used for transformer is drawn and current-carrying, simultaneously also as the insulation against ground and the mechanical support of current-carrying part, the safe operation of transformer is played an important role.But the bushing shell for transformer of existing operation is not pressure-fired system and all-sealed structure.When changing, parameters such as electric current, voltage make sleeve pipe can not be stabilized in operation under the desired pressure of standard; the pressure of inside pipe casing is uncontrollable, does not have early warning and overvoltage protection measure, and particularly sleeve pipe fault pressure can't discharge; cause bushing explosion, influence the normal operation of system.
Mostly cubage compensation and pressure are not regulated measure to the oil conservator of the former configuration of sleeve pipe preferably, but be provided with oil and air cavity at its top, insulating oil in the sleeve pipe only contact with air in the air cavity of oil conservator top, the cubage compensation of this air cavity during as iknsulating liquid expansion or contraction change.When the temperature rise of sleeve pipe oil, the oil volume of expansion can make the air compression in the airtight oil conservator air cavity, and the interior voltage rise height of air cavity causes pressing in the sleeve pipe integral body and strengthens, thereby the overall sealing performance in the sleeve pipe is descended, and easily makes seal of vessel place that seepage takes place.When the fault pressure of inside pipe casing reaches the withstand voltage limit, will cause bushing explosion.When sleeve pipe oil temperature drop is low, oil volume in the sleeve pipe can be shunk, the volume of its contraction will be filled by the air expansion in the oil conservator air cavity, thereby make and produce negative pressure in the sleeve pipe, each connecting portion that makes sleeve pipe is because of sealing bad suction outside air, cause the water content and the air content of oil to increase, decreasing insulating, oil degenerates.Cause the puncture of sleeve pipe insulation system thus, even cause serious accidents such as short circuit, blast.Power department all will regularly replace the safe operation that sleeve pipe guarantees transformer every year, causes the waste of human and material resources.
Summary of the invention:
In view of the deficiency that above-mentioned existing sleeve technology exists, the purpose of this utility model provides a kind of insulation property and electric property that guarantees transformer oil in the sleeve pipe, makes its safe operation and non-maintaining explosion-proof transformer sleeve.
The object of the present invention is achieved like this: it mainly comprises oil conservator, last insulator, following insulator, adpting flange and capacitor core, it is characterized in that: this oil conservator constitutes cabinet by chassis, outer cover and loam cake, in cabinet, be provided with wavy metal compensation body, the upper end of this compensation body is provided with closing cap, bottom and chassis are connected, and are connected with cannula cavity by the chassis in the cabinet.Realized the sleeve pipe all-sealed structure with this.Insulating oil remains full state and isolates no negative pressure generation in the cabinet with outside air in the cabinet.When oily temperature rise oil volume expanded, the wavy metal of oil conservator compensation body was compressed; When the low oil volume of oily temperature drop was shunk, the ripple compensation volume expansion with this size that changes oil volume in the oil conservator, reached the purpose of cubage compensation.
Variation for the actual oil level of reaction directly perceived is provided with the node oil level gauge on oil conservator; And, be provided with the teletransmission warning device at the oil level extreme position.
For stoping sleeve pipe to be blasted, be provided with pressure relief device in the oil conservator, in case sleeve pipe breaks down the rising suddenly of insulating oil temperature or pressure is prescribed a time limit above rating plate, the pressure relief device action makes insulating oil discharge through exhaust outlet.This pressure relief device comprises the bottom and is connected in the striker of wavy metal compensation body bottom and corresponding striker upper end and is arranged on draining copper sheet on the wavy metal compensation body closing cap.When sleeve pipe breaks down the rising suddenly of insulating oil temperature or pressure is prescribed a time limit above rating plate, wavy metal compensation body is compressed into the limit, and striker punctures the draining copper sheet, and insulating oil enters wavy metal compensation body, release excess pressure in the cabinet.
Technique effect of the present utility model is to have replaced air cavity type structure in the former oil conservator with the wavy metal expander in the sleeve pipe oil conservator, make sleeve pipe when work, be in slight positive pressure state all the time, be used for the compensation that the sleeve pipe oil volume changes, protected the insulation property and the electric property of transformer oil in the sleeve pipe, made it to increase the service life; Can intuitively react the variation of actual oil level, stop sleeve pipe generation overvoltage blast; Because this device is non-maintaining structure, need not to change iknsulating liquid or iknsulating liquid is filtered, can save human and material resources greatly, and operational reliability is improved greatly.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of oil conservator among Fig. 1.
Embodiment:
By accompanying drawing as can be known, the utility model mainly comprise lead-in wire pipe (cylinder lever connecting rod) 2 and be located at oil conservator 4 on this lead-in wire pipe, go up insulator 5, adpting flange 6, insulator 7 and capacitor core (among the figure sign, same as the prior art) down.The oil conservator 4 that is located at sleeve pipe top constitutes cabinet by chassis 4-5, outer cover 4-2 and loam cake 4-1.In this cabinet, be provided with wavy metal compensation body 4-4, the upper end of this compensation body is provided with closing cap 4-6, bottom and chassis 4-5 are connected, being connected with cannula cavity by the chassis in the cabinet, (this structure is the outer oil type oil conservator, if adopt the inner oil type oil conservator, then wavy metal compensation body 4-4 inner chamber is connected with cannula cavity.Promptly the structure at sleeve pipe oil conservator inner corrugated pipe can be any form, and oil-filled mode also can be in the bellows oil-filled or bellows is outer oil-filled.)。Insulating oil remains full state and isolates no negative pressure generation in the cabinet with outside air in the cabinet.When oily temperature rise oil volume expanded, the wavy metal of oil conservator compensation body was compressed; When the low oil volume of oily temperature drop was shunk, the ripple compensation volume expansion with this size that changes oil volume in the oil conservator, reached the purpose of cubage compensation.Sequence number 1 is a binding post among the figure, and sequence number 3,8 is respectively junction block (upper locking nut) and base (lower locking nut).
Bottom at wavy metal compensation body 4-4 is provided with striker 4-7, meanwhile is provided with draining copper sheet 4-8 on corresponding striker upper end wavy metal compensation body closing cap.Constitute pressure relief device by striker 4-7 and draining copper sheet 4-8.When sleeve pipe breaks down the rising suddenly of insulating oil temperature or pressure is prescribed a time limit above rating plate, wavy metal compensation body is compressed near limit, and striker 4-7 punctures draining copper sheet 4-8, and insulating oil enters wavy metal compensation body, release excess pressure in the cabinet.
On oil conservator 4, be provided with node oil level gauge 4-3, can intuitively react the variation of actual oil level by it.At the oil level extreme position, can be provided with the teletransmission warning device.
Claims (3)
1. explosion-proof transformer sleeve, it mainly comprises oil conservator, last insulator, following insulator, adpting flange and capacitor core, it is characterized in that: this oil conservator constitutes cabinet by chassis, outer cover and loam cake, in cabinet, be provided with wavy metal compensation body, the upper end of this compensation body is provided with closing cap, bottom and chassis are connected, and are connected with cannula cavity by the chassis in the cabinet.
2. explosion-proof transformer sleeve as claimed in claim 1 is characterized in that: be provided with the node oil level gauge on oil conservator.
3. explosion-proof transformer sleeve as claimed in claim 1 or 2, it is characterized in that: be provided with pressure relief device in oil conservator, this device comprises the bottom and is connected in the striker of wavy metal compensation body bottom and corresponding striker upper end and is arranged on draining copper sheet on the wavy metal compensation body closing cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201094821U CN201758065U (en) | 2010-02-09 | 2010-02-09 | Explosion-resistant type transformer sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201094821U CN201758065U (en) | 2010-02-09 | 2010-02-09 | Explosion-resistant type transformer sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758065U true CN201758065U (en) | 2011-03-09 |
Family
ID=43645353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201094821U Expired - Lifetime CN201758065U (en) | 2010-02-09 | 2010-02-09 | Explosion-resistant type transformer sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053985A (en) * | 2017-12-26 | 2018-05-18 | 铜陵日科电子有限责任公司 | A kind of bushing shell for transformer apparatus for placing |
| CN111161946A (en) * | 2020-01-03 | 2020-05-15 | 云南电网有限责任公司电力科学研究院 | Anti-seismic transformer bushing with oil pressure compensation and monitoring and protecting method |
-
2010
- 2010-02-09 CN CN2010201094821U patent/CN201758065U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053985A (en) * | 2017-12-26 | 2018-05-18 | 铜陵日科电子有限责任公司 | A kind of bushing shell for transformer apparatus for placing |
| CN111161946A (en) * | 2020-01-03 | 2020-05-15 | 云南电网有限责任公司电力科学研究院 | Anti-seismic transformer bushing with oil pressure compensation and monitoring and protecting method |
| CN111161946B (en) * | 2020-01-03 | 2023-10-27 | 云南电网有限责任公司电力科学研究院 | Shock-resistant transformer bushing with oil pressure compensation and monitoring and protecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |