CN204497041U - A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering - Google Patents
A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering Download PDFInfo
- Publication number
- CN204497041U CN204497041U CN201520113192.7U CN201520113192U CN204497041U CN 204497041 U CN204497041 U CN 204497041U CN 201520113192 U CN201520113192 U CN 201520113192U CN 204497041 U CN204497041 U CN 204497041U
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- CN
- China
- Prior art keywords
- tube connector
- buchholz relay
- oil
- wandering
- gushes
- 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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- 239000004519 grease Substances 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000002828 fuel tank Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model provide a kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering, described transformer includes main fuel tank, conservator and tube connector between the two, be located at the Buchholz relay on tube connector in addition, it is characterized in that: the oily tube chamber bottom flowing to mouthful side of Buchholz relay of described tube connector is provided with surge baffle plate, described surge baffle plate is the semicircle shape steel disc of thickness 5mm, and its external diameter is equal with the internal diameter of tube connector.The utility model effectively can reduce the flow velocity flowing to Buchholz relay oil stream, avoids Buchholz relay when external fault, misoperation occur and cause heavy losses.
Description
Technical field
The utility model relate to a kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering.
Background technology
Transformer non-electricity protection comprises gas, pressure and temperature protection etc., and protection and pressure protect have highly sensitive when transformer generation internal short circuit fault, and the feature such as to be swift in response is always as important protection form during transformer generation internal fault.The validity of gas and pressure protect and reliability, depend on the setting of Buchholz relay and pressure relief valve setting value, and the two cooperation on protection seting.At present, the main transformer protection of domestic operation and the correlation standard such as pressure protect setting value Main Basis " Buchholz relay " and " power transformer maintenance directive/guide ".Along with the continuous increase of net capacity, during main transformer generation external short circuit, short circuit current increases increasingly.When there is near region short trouble in main transformer, winding bears huge electrodynamic action generation vibration because flowing through fault traversing electric current and then drives inner oil flow surge.The motion of oil stream produces larger pressure causes pressure relief valve malfunction oil spout, if the not timely relieving pressure of pressure relief valve in some cases, oil stream impacts Buchholz relay further and causes its malfunction to be tripped, and causes the massive losses of load, has had a strong impact on power network safety operation.
In recent years; repeatedly there is main transformer external short circuit and cause the situation such as main transformer grave gas trip protection, the oil spout of earth pressure release valve events in Guangdong Power Grid; as 500kV Guan Cheng station, station, the Xijiang River, Fragrance Hill station owner become generation external short circuit and cause the oil spout of earth pressure release valve events; near region, side short circuit during 500kV deep blue river station owner's transformer becomes, main transformer grave gas action tripping operation etc.Find through investigation, also there is a lot of similar fault in other area power grids domestic, and put into operation at main transformer in some area during the Switching impulse in process, the impact due to magnetizing inrush current also once caused the situation of main transformer grave gas trip protection.Analyzing failure cause mainly comes from when winding flows through transient state larger current and produces huge dynamic electric power, and winding stressed after vibration extruding interior oil stream, oil stream impacts Buchholz relay and pressure relief valve, and then causes Buchholz relay misoperation.
Utility model content
Technical problem to be solved in the utility model, just be to provide a kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering, can prevent the larger oily wandering produced in external fault process from gushing impact on Buchholz relay reliability, avoid Buchholz relay misoperation.
Solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering, described transformer includes main fuel tank, conservator and tube connector between the two, be located at the Buchholz relay on tube connector in addition, it is characterized in that: the oily tube chamber bottom flowing to mouthful side of Buchholz relay of described tube connector is provided with surge baffle plate.
Described surge baffle plate is the semicircle shape steel disc of thickness 5mm, and its external diameter is equal with the internal diameter of tube connector.
Compared with prior art, the utility model instrument has the following advantages:
The tube chamber bottom that the utility model flows to mouthful side at the Buchholz relay oil of tube connector is provided with surge baffle plate, effectively can reduce the flow velocity flowing to Buchholz relay oil stream, avoid Buchholz relay when external fault, misoperation occur and cause heavy losses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is use schematic diagram of the present utility model.
In figure: 1-surge baffle plate, 2-tube connector, 3-Buchholz relay.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail.
As shown in Figure 1, 2, a kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering, described transformer includes main fuel tank, conservator and tube connector between the two 2, be located at the Buchholz relay 3 on tube connector in addition, it is characterized in that: the oily tube chamber bottom flowing to mouthful side of Buchholz relay of described tube connector is provided with surge baffle plate 1.
Described surge baffle plate 1 is the semicircle shape steel disc of thickness 5mm, and its external diameter is equal with the internal diameter of tube connector.
When oil-immersed power transformer generation external fault extruding interior oil stream, the surge baffle plate in the utility model effectively can reduce the flow velocity flowing to Buchholz relay oil stream, thus avoids Buchholz relay when external fault, misoperation occur and cause heavy losses.
Claims (2)
1. one kind can the oil-immersed power transformer that gushes of effective grease proofing wandering, described transformer includes main fuel tank, conservator and tube connector between the two, be located at the Buchholz relay on tube connector in addition, it is characterized in that: the oily tube chamber bottom flowing to mouthful side of Buchholz relay of described tube connector is provided with surge baffle plate.
2. according to claim 1 can the oil-immersed power transformer that gushes of effective grease proofing wandering, it is characterized in that: described surge baffle plate is the semicircle shape steel disc of thickness 5mm, and its external diameter is equal with the internal diameter of tube connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113192.7U CN204497041U (en) | 2015-02-16 | 2015-02-16 | A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113192.7U CN204497041U (en) | 2015-02-16 | 2015-02-16 | A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497041U true CN204497041U (en) | 2015-07-22 |
Family
ID=53576336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520113192.7U Expired - Fee Related CN204497041U (en) | 2015-02-16 | 2015-02-16 | A kind of can the oil-immersed power transformer that gushes of effective grease proofing wandering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038074A (en) * | 2020-08-26 | 2020-12-04 | 北京峰曲睿泽房地产经纪有限公司 | Novel low-voltage taua winding coil oil-immersed transformer |
-
2015
- 2015-02-16 CN CN201520113192.7U patent/CN204497041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038074A (en) * | 2020-08-26 | 2020-12-04 | 北京峰曲睿泽房地产经纪有限公司 | Novel low-voltage taua winding coil oil-immersed transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 |