CN204668804U - A kind of main transformer surge suppressor - Google Patents
A kind of main transformer surge suppressor Download PDFInfo
- Publication number
- CN204668804U CN204668804U CN201520439776.3U CN201520439776U CN204668804U CN 204668804 U CN204668804 U CN 204668804U CN 201520439776 U CN201520439776 U CN 201520439776U CN 204668804 U CN204668804 U CN 204668804U
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- CN
- China
- Prior art keywords
- conservator
- buchholz relay
- valve
- pipeline
- main transformer
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- 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
A kind of main transformer surge suppressor, comprise conservator, Buchholz relay, be arranged on the valve connected on conservator and Buchholz relay main pipeline, described Buchholz relay is provided with vent valve, conservator respirator is connected with conservator by the first pipeline, first install pipeline has the first valve, vacuum pump is connected with described first pipeline by second pipe, and second pipe is provided with the second valve, and the venting plug of described Buchholz relay installs Pressure gauge additional.A kind of main transformer surge suppressor of the utility model, utilizes vacuum pump to bleed to conservator capsule, makes Buchholz relay place pressure realize concora crush to atmospheric pressure, improve accuracy and the controllability of concora crush, before effective minimizing, the workload of method, improves operating efficiency, has saved cost.
Description
Technical field
A kind of main transformer surge suppressor of the utility model, relates to main transformer maintenance field.
Background technology
Three Gorges Left Bank Hydropower Station 500kV transformer is all produced by Siemens Company at present, within every 3 years, will need replacing Buchholz relay as requested so that verification.There is a valve between the Buchholz relay of this model transformer and conservator, but and between casing, valve is not set.In maintenance, relate to main transformer oil extraction, Metal Cutting owing to will set up valve between Buchholz relay and main transformer casing and vacuumize the complicated technologies such as oil strain, the large long construction period of workload and construction risk are comparatively large, therefore put aside.At present, carrying out that Buchholz relay changes is that after closing the valve that is connected with Buchholz relay of conservator, the vent valve opened on Buchholz relay carries out oil extraction, carries out Buchholz relay more more change jobs to no longer including after oil discharge reaches concora crush state.After valve between closed gas relay and conservator, now Buchholz relay place pressure is that oil pressure H adds atmospheric pressure, after opening the vent valve on Buchholz relay, the pressure at Buchholz relay place just can stop when will dropping to atmospheric pressure running oil, because transformer body about has 80 tons of oil, therefore Buchholz relay place pressure after pressure change, will be made to realize balancing with atmospheric pressure needing oil extraction to be about 100L at every turn, cause great waste.In addition, oil extraction process can cause transformer body top ground to have greasy dirt, there is certain potential safety hazard to operating personnel; The oil of discharge is transported to sump tank from body more difficult.
In Repair of Transformer process, it is very important cycled recondition project that Buchholz relay is changed.If a kind of device can be had, automatically can realize the concora crush process of main transformer Buchholz relay and can prevent main transformer from running oily phenomenon, just can greatly increase work efficiency and economic benefit.
Summary of the invention
A kind of main transformer surge suppressor of the utility model, utilizes vacuum pump to bleed to conservator capsule, makes Buchholz relay place pressure realize concora crush to atmospheric pressure, improve accuracy and the controllability of concora crush, before effective minimizing, the workload of method, improves operating efficiency, has saved cost.
The technical scheme that the utility model adopts is:
A kind of main transformer surge suppressor, comprise conservator, Buchholz relay, be arranged on the valve connected on conservator and Buchholz relay main pipeline, described Buchholz relay is provided with vent valve, conservator respirator is connected with conservator by the first pipeline, first install pipeline has the first valve, vacuum pump is connected with described first pipeline by second pipe, and second pipe is provided with the second valve, and the venting plug of described Buchholz relay installs Pressure gauge additional.
Described Buchholz relay comprises relay coil, normally-closed contact, relay coil Bonding pressure table, and normally-closed contact connects vacuum pump.
Described conservator respirator is capsule-type respirator.
A kind of main transformer surge suppressor of the utility model, beneficial effect is: the accuracy that improve Buchholz relay place concora crush, decreases the workload of Buchholz relay concora crush, improves operating efficiency, shorten the operating time.The transformer also effectively avoided in concora crush process runs the wasting phenomenon that oil causes, and has saved manpower and cost, has had good economic benefit.
Accompanying drawing explanation
Fig. 1 is the utility model device scheme of installation;
Fig. 2 is the utility model device electric drawings.
Embodiment
As shown in Figure 1 and Figure 2, a kind of main transformer surge suppressor, comprises conservator 5, Buchholz relay 2, is arranged on the valve 4 connected on conservator 5 and Buchholz relay 2 main pipeline, and main pipeline one end connects conservator 5, the other end connects main transformer casing 1.Described Buchholz relay 2 is provided with vent valve 3, conservator respirator 6 is connected with conservator 5 by the first pipeline, first install pipeline has the first valve 7, vacuum pump 9 is connected with described first pipeline by second pipe, second pipe is provided with the second valve 8, and the venting plug of described Buchholz relay 2 installs Pressure gauge a additional.Described conservator respirator 6 is capsule-type respirator.
Described Buchholz relay 2 comprises relay coil b, normally-closed contact c, relay coil b Bonding pressure table a, and normally-closed contact c connects vacuum pump 9, and as shown in Figure 2, vacuum pump 9 connects ~ 220V power supply.
A kind of main transformer surge suppressor of the utility model, utilizes vacuum pump 9 and Pressure gauge a, detects the pressure regulating Buchholz relay 2 place, to reach the state balanced with atmospheric pressure.The pressure at Buchholz relay 2 place is mainly from oil pressure (innage is H) and the atmospheric pressure of transformer oil in conservator 5, conservator respirator 6 is directly connected with the capsule of conservator 5 by the first pipeline, the venting plug of Buchholz relay 2 adds lastblock Pressure gauge a, and opening vent valve 3, Pressure gauge a controls opening/stopping of vacuum pump 9.
Before changing Buchholz relay 2, first close the first valve 7, open the second valve 8, after electricity given by vacuum pump 9, vacuum pump 9 starts to bleed, and Pressure gauge a shows the oil pressure at Buchholz relay place 2 and the difference of atmospheric pressure, when reading on Pressure gauge a is timing, relay coil b is failure to actuate; When reading reaches below 0 or 0, relay coil b action, by normally-closed contact c adhesive, vacuum pump 9 quits work.After closing the second valve 8 and valve 4, the replacing of Buchholz relay 2 can be carried out.
Claims (3)
1. a main transformer surge suppressor, comprise conservator (5), Buchholz relay (2), be arranged on and connect conservator (5) and the valve (4) on Buchholz relay (2) main pipeline, described Buchholz relay (2) is provided with vent valve (3), it is characterized in that, conservator respirator (6) is connected with conservator (5) by the first pipeline, first install pipeline has the first valve (7), vacuum pump (9) is connected with described first pipeline by second pipe, second pipe is provided with the second valve (8), the venting plug of described Buchholz relay (2) installs Pressure gauge (a) additional.
2. a kind of main transformer surge suppressor according to claim 1, it is characterized in that, described Buchholz relay (2) comprises relay coil (b), normally-closed contact (c), relay coil (b) Bonding pressure table (a), and normally-closed contact (c) connects vacuum pump 9.
3. a kind of main transformer surge suppressor according to claim 1, it is characterized in that, described conservator respirator (6) is capsule-type respirator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439776.3U CN204668804U (en) | 2015-06-25 | 2015-06-25 | A kind of main transformer surge suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439776.3U CN204668804U (en) | 2015-06-25 | 2015-06-25 | A kind of main transformer surge suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668804U true CN204668804U (en) | 2015-09-23 |
Family
ID=54139151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520439776.3U Expired - Fee Related CN204668804U (en) | 2015-06-25 | 2015-06-25 | A kind of main transformer surge suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823523A (en) * | 2021-09-30 | 2021-12-21 | 山西沁新能源集团股份有限公司 | Automatic exhaust device for gas relay of rectifier transformer |
-
2015
- 2015-06-25 CN CN201520439776.3U patent/CN204668804U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823523A (en) * | 2021-09-30 | 2021-12-21 | 山西沁新能源集团股份有限公司 | Automatic exhaust device for gas relay of rectifier 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: 20150923 Termination date: 20200625 |