CN208027890U - A kind of bushing shell for transformer with automatic protection functions - Google Patents
A kind of bushing shell for transformer with automatic protection functions Download PDFInfo
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- CN208027890U CN208027890U CN201820425361.4U CN201820425361U CN208027890U CN 208027890 U CN208027890 U CN 208027890U CN 201820425361 U CN201820425361 U CN 201820425361U CN 208027890 U CN208027890 U CN 208027890U
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- oil
- wavy metal
- oil conservater
- transformer
- casing
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Abstract
The utility model is related to a kind of bushings shell for transformer with automatic protection functions, including connecting terminal, capacitor core, casing oil conservater and insulator, described sleeve pipe oil conservater includes oil conservater cabinet and generates the wavy metal compensation body of micro-positive pressure, wavy metal compensation body is located inside oil conservater cabinet, the upper end that wavy metal compensates body is mounted on oil conservater cabinet inside top, the wavy metal compensation body is double-layer structure, it is air chamber between inside and outside two layers, the air chamber is communicated with outside atmosphere, filled with insulating oil between the wavy metal compensation body and oil conservater cabinet；The pressure relief device for preventing casing from explosion damage occurs is installed on the oil conservater cabinet.The utility model makes voltage transformer system be run under slight positive pressure state always, protects the insulation performance and electric property of transformer oil in casing, so that casing is truly realized hermetically sealed.
Description
Technical field
It is specifically a kind of the utility model is related to which the outlet conductor of transformer to be drawn to the seal outside fuel tank
Using the bushing shell for transformer with automatic protection functions in the power system.
Background technology
The voltage of inside transformer is drawn fuel tank outside and current-carrying by significant components of the casing as transformer, while
Insulation against ground as current-carrying part and mechanical support play an important role to the safe operation of transformer.But it now runs
Bushing shell for transformer be not micro-positive pressure system and all-sealed structure, without early warning and over-pressed automatic protection functions, make casing failure
Pressure can not discharge, and cause the accident of bushing explosion.
The former oil conservater of casing configuration is to be internally provided with oil and air cavity, the insulating oil in casing and oil conservater top air cavity
In air contact, cubage compensation when this air cavity changes as insulating liquid expansion or shrinkage.It is swollen when casing oil temperature increases
Swollen oil volume can be such that the air in closed oil conservater air cavity compresses, and the internal pressure of air cavity increases, and casing entirety internal pressure is caused to add
Greatly, to make the overall sealing performance in casing decline, easily make to leak at container sealing.When casing oil temperature reduces, set
Oil volume in pipe can be shunk, and the volume shunk will be filled by the air expansion in oil conservater air cavity, to make in casing
Negative pressure is generated, makes each connecting portion of casing because sealing bad sucking outside air, so that insulating oil is made moist water content increase, absolutely
Edge performance declines.When inside pipe casing failure pressure reaches capacity, there is no automatic protection pressure relief device, cause casing
Explosion.Power department will regularly replace casing to ensure the safe operation of transformer every year, cause the waste of human and material resources.
Utility model content
In order to solve the above problem existing for existing casing, the purpose of this utility model is to provide with automatic protection work(
The bushing shell for transformer of energy.The bushing shell for transformer with automatic protection functions is that have wavy metal expansion type in casing upper design
Casing oil conservater and on casing oil conservater be equipped with pressure relief device, so that casing is really formd all-sealed structure, run
When system be in micro-positive pressure working condition always, the insulation performance of transformer oil and prevent casing accidental detonation in protection sleeve pipe.
The purpose of this utility model is achieved through the following technical solutions：
The utility model includes connecting terminal, capacitor core, casing oil conservater and insulator, and described sleeve pipe oil conservater includes storage
Oil Tank cabinet and the wavy metal for generating micro-positive pressure compensate body, and wavy metal compensation body is located inside oil conservater cabinet, metal
The upper end of ripple compensation body is mounted on oil conservater cabinet inside top, and wavy metal compensation body is double-layer structure, and inside and outside two
It is air chamber between layer, the air chamber is communicated with outside atmosphere, is filled between the wavy metal compensation body and oil conservater cabinet
There is insulating oil；The pressure relief device for preventing casing from explosion damage occurs is installed on the oil conservater cabinet；
The end face of the wavy metal compensation body is the double-deck annular, and the inner surface of wavy metal compensation body and outer surface are equal
It is immersed in insulating oil；
The oil conservater cabinet includes upper end cover, outer cover and bottom plate, the top and bottom of the outer cover respectively with the upper end
Lid and bottom plate is tightly connected, and the upper end of the wavy metal compensation body and the lower surface sealing of upper end cover are affixed；The pressure is released
Device is put on upper end cover；
The oil conservater cabinet is equipped with oil level gauge；The oil level gauge is equipped with maximum, minimum, operation and early warning mark
Line；
The pressure relief device is composite pressure relief valve.
The advantages of the utility model is with good effect：
1. the utility model is full of the casing oil conservater of insulating oil in casing upper design, outside air is completely cut off, has made
Voltage transformer system is under slight positive pressure state runs always, solves casing uncontrollable positive pressure and negative pressure in operation, protects
The insulation performance and electric property for having protected transformer oil in casing, make casing be truly realized hermetically sealed.
2. the utility model is provided with pressure relief device, the false pressure of releasable casing, resistance on casing oil conservater
Only casing overvoltage is exploded, and casing reliability of operation is improved.
3. the utility model realizes all-sealed structure by casing oil conservater, keep system non-maintaining, nothing is needed to change and filtered
Insulating oil can save human and material resources, extend the service life of casing.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structure sectional view of Fig. 1 middle sleeve oil conservaters；
Wherein：1 is connecting terminal, and 2 be capacitor core, and 3 be casing oil conservater, and 4 be insulator, and 5 be oil tank of transformer, and 6 are
Pressure relief device, 7 be upper end cover, and 8 be outer cover, and 9 compensate body for wavy metal, and 10 be oil level gauge, and 11 be bottom plate, and 12 be air
Chamber.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the utility model includes connecting terminal 1, capacitor core 2, casing oil conservater 3 and insulator 4,
Middle sleeve oil conservater 3 includes oil conservater cabinet and generates the wavy metal compensation body 9 of micro-positive pressure, and oil conservater cabinet includes upper end cover
7, outer cover 8 and bottom plate 11, the top and bottom of the outer cover 8 are tightly connected with upper end cover 7 and bottom plate 11 respectively, wavy metal compensation
Body 9 is located inside oil conservater cabinet, and the upper end of wavy metal compensation body 9 and the lower surface sealing of upper end cover 7 are affixed.
It is double-layer structure that wavy metal, which compensates body 9, is air chamber 12, the air chamber 12 and outside atmosphere between inside and outside two layers
It communicates, wavy metal, which compensates, is full of insulating oil between body 9 and oil conservater cabinet.The wavy metal compensation body 9 of the utility model
End face is the double-deck annular, i.e., wavy metal compensation body is using the double-deck annular solder bellows.Wavy metal compensates the inner surface of body 9
And outer surface is immersed in insulating oil.
Pressure relief device 6 is installed on upper end cover 7, when casing failure pressure oversteps the extreme limit, pressure release
Device 6 automatically turns on pressure release, protects ontology and casing, prevents casing from explosion damage occurs.The pressure release dress of the utility model
It is composite pressure relief valve to set 6, and when casing pressure oversteps the extreme limit, composite pressure relief valve automatically turns on pressure release, works as pressure
When power is down to the limit or less, pressure relief valve automatically resets.
Oil conservater cabinet is equipped with oil level gauge 10, which is equipped with maximum, minimum, operation and early warning tag line.
The operation principle of the utility model is：
For bushing shell for transformer in normal work, the wavy metal inside casing oil conservater 3 compensates body 9 as oil temperature variation can
The pressure change for carrying out compensation adjustment inside pipe casing is shunk in expansion, and oil level can be observed by the oil level gauge 10 on casing oil conservater 3
Situation issues warning signal when casing failure pressure reaches the limit values, and pressure relief device 6 automatically turns on pressure release,
Achieve the purpose that prevent bushing explosion.
Claims (6)
1. a kind of bushing shell for transformer with automatic protection functions, including connecting terminal, capacitor core, casing oil conservater and porcelain
Set, it is characterised in that：Described sleeve pipe oil conservater (3) includes oil conservater cabinet and generates the wavy metal compensation body (9) of micro-positive pressure,
Wavy metal compensation body (9) is located inside oil conservater cabinet, and the upper end that wavy metal compensates body (9) is mounted on oil conservater cabinet
Inside top, the wavy metal compensation body (9) are double-layer structure, are air chamber (12), the air chamber between inside and outside two layers
(12) it is communicated with outside atmosphere, filled with insulating oil between the wavy metal compensation body (9) and oil conservater cabinet；In the oil storage
The pressure relief device (6) for preventing casing from explosion damage occurs is installed on cabinet cabinet.
2. the bushing shell for transformer with automatic protection functions according to claim 1, it is characterised in that：The wavy metal is mended
The end face for repaying body (9) is the double-deck annular, and the inner surface of wavy metal compensation body (9) and outer surface are immersed in insulating oil.
3. the bushing shell for transformer with automatic protection functions according to claim 1, it is characterised in that：The oil conservater cabinet
Including upper end cover (7), outer cover (8) and bottom plate (11), the top and bottom of the outer cover (8) respectively with the upper end cover (7) and bottom
Plate (11) is tightly connected, and the upper end of the wavy metal compensation body (9) and the lower surface sealing of upper end cover (7) are affixed；The pressure
Power release device (6) is mounted on upper end cover (7).
4. the bushing shell for transformer with automatic protection functions according to claim 1, it is characterised in that：The oil conservater cabinet
It is equipped with oil level gauge (10).
5. the bushing shell for transformer with automatic protection functions according to claim 4, it is characterised in that：The oil level gauge (10)
It is equipped with maximum, minimum, operation and early warning tag line.
6. the bushing shell for transformer with automatic protection functions according to claim 1, it is characterised in that：The pressure release dress
It is composite pressure relief valve to set (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425361.4U CN208027890U (en) | 2018-03-27 | 2018-03-27 | A kind of bushing shell for transformer with automatic protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820425361.4U CN208027890U (en) | 2018-03-27 | 2018-03-27 | A kind of bushing shell for transformer with automatic protection functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208027890U true CN208027890U (en) | 2018-10-30 |
Family
ID=63907648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820425361.4U Active CN208027890U (en) | 2018-03-27 | 2018-03-27 | A kind of bushing shell for transformer with automatic protection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208027890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-03-27 CN CN201820425361.4U patent/CN208027890U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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