CN202678049U - Oil circuit system of transformer - Google Patents
Oil circuit system of transformer Download PDFInfo
- Publication number
- CN202678049U CN202678049U CN 201220300968 CN201220300968U CN202678049U CN 202678049 U CN202678049 U CN 202678049U CN 201220300968 CN201220300968 CN 201220300968 CN 201220300968 U CN201220300968 U CN 201220300968U CN 202678049 U CN202678049 U CN 202678049U
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- Prior art keywords
- oil
- transformer
- core body
- piping system
- conservator
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Abstract
The utility model discloses an oil circuit system of a transformer. The oil circuit system comprises an oil tank of an on-load body, a gas relay and an oil conservator, wherein a metal expander core body is arranged on a pipeline between the gas relay and the oil conservator; a lever is arranged in the oil conservator, one end of the level is connected with a floating ball, and the other end of the level is provided with a piston valve; and the oil conservator is provided with a connecting pipe, one end of the connecting pipe is opposite to the piston valve, and the other end of the connecting pipe is connected with a breathing dryer. The oil circuit system has the advantages that (1), by the oil circuit system, the transformer oil is prevented from being directly contacted with air, moisture in the air is prevented from permeating the transformer oil, and a permanent moistureproof function is realized; (2), gas produced during the running of the transformer and during the gear shifting of an on-load tap-changer can be effectively exhausted; and (3), the oil circuit system has certain pressure, so that the arc extinguishing of the transformer oil during the gear shifting of the on-load tap-changer is facilitated.
Description
Technical field
The utility model relates to field transformer, especially 35kV and above on-load tap-changing transformer, specifically a kind of oil piping system of transformer.
Background technology
The oil piping system structure of 35kV and above on-load tap-changing transformer is that pipeline is drawn from the fuel tank that year body is arranged at present, receives oil conservator behind the connection Buchholz relay.Oil conservator is divided into the air chamber on grease chamber and the top of bottom, and its effect is for expanding with heat and contract with cold of transformer oil creates conditions, and makes oil tank of transformer all be full of oil under any temperature and operation conditions.Buchholz relay is used for fault alarm, and when power transformer interior fault, the air accumulation of generation reduces pasta on the top of Buchholz relay.When pasta is reduced to a certain degree, upper floating drum cascading water silver is connected over the ground, send signal, when the inner catastrophe failure of transformer, oil stream impact baffle plate, baffle plate deflection and drive plate after trace rotate and rise, provoke the interlock ring that links to each other with mercury contact, mercury contact is rotated to the both sides vertical with oil stream respectively, and two place's mercury contacts are connected simultaneously and are made circuit breaker trip or send signal.
The moistureproof major measure of above-mentioned oil piping system realizes by a breathing drier is set.The container that is generally a circle of this breathing drier, upper end are received the air chamber of oil conservator by union, the lower end has air intake to communicate with atmosphere.At Transformer, during the variations in temperature of insulating oil, air-breathing and scavenging action will occur in oil conservator, and air passes in and out oil conservator by breathing drier.The air intake place of breathing the drier lower end is provided with oil-sealing arrangement.Fill the drier such as silica gel or calcium chloride at internal tank, in order to remove dust and the moisture in the air amount.The operating respiratory of transformer breather: raise with oil temperature, the volumetric expansion of oil, unnecessary oil enters the oil conservator grease chamber in the fuel tank, makes grease chamber's volume become large, and the gas in the while oil conservator air chamber is squeezed by breathing drier enters atmosphere; When the reduction of the oil temperature in the fuel tank, when oil volume is shunk, the oil of grease chamber enters fuel tank, and atmosphere is sucked into air chamber by respirator simultaneously.
The method has solved moistureproof dry problem well, but then needs frequently to change drier in the relatively large area of air humidity, and needs in the transposing process transformer is stopped labour, thereby increase equipment stops using as a servant number of times and time, is unfavorable for power transformation operation.
Summary of the invention
To be solved in the utility model is the problems referred to above that prior art exists, and aims to provide a kind of oil piping system of enclosed transformer, can effectively play moisture-proof role, need not frequently change drier simultaneously, and power transmission and transformation line can reliablely and stablely be moved.
For addressing the above problem, the utility model is by the following technical solutions: a kind of oil piping system of transformer, include the fuel tank, Buchholz relay and the oil conservator that carry body, described fuel tank is connected an end and is connected by pipeline with Buchholz relay, it is characterized in that the other end of described Buchholz relay is connected to an end of a metal expander core body by pipeline, the other end of described metal expander core body is by metal hose and described oil conservator UNICOM; Be provided with a lever in the described oil conservator, a termination one ball float or the floating drum of described lever, the other end of described lever is provided with a piston valve; Also be provided with a union on the described oil conservator, an end of described union is relative with described piston valve to be configured, and the other end connects an one-way exhaust valve or breathes drier after stretching out described oil conservator.
The oil piping system of transformer of the present utility model, loaded switch transfer the files and the main transformer running in, transformer oil is because the electrochemical action meeting produces various gases, because the air chamber space of density difference above the device oil circuit is circulated to ball float and piston valve; Pressure strengthens when air compressing, transformer oil is subjected to the gas pressure-acting that the metal expander core body is expanded, oil reservoir descends, ball float moves downward, ball float and piston valve rotate take the rotation axis of lever as fulcrum, piston valve moves upward, and forms the gap between piston valve and the union, and gas enters unidirectional valve or breathes the drier discharge from union; After ball float top air and atmospheric pressure maintained an equal level, the metal expander core body shrank, and the oil reservoir of grease chamber rises in the oil conservator, ball float moves upward, and piston valve moves downward, and reaches balance with ball float, the pipe sealing of union, thus reach the purpose of the gas of discharging transformer oil generation in service; Isolated simultaneously transformer oil and contacted with the direct of air, the impact of having avoided air humidity that transformer oil is caused.Because this device inside has oil pressure, be conducive to the loaded switch transformer oil arc extinguishing effect in the process of transferring the files.Have the body temperature of oil in transformer of carrying constantly to change with load, the metal expander core body is constantly flexible.
The beneficial effects of the utility model are as follows:
1, isolated transformer oil and directly contacted with air, prevented that moisture in air from infiltrating transformer oil, plays permanent moisture-proof role.
2, can effectively discharge the gas that transformer operation and on load tap changer are transferred the files and produced.
3, have certain oil pressure, be conducive to the loaded switch transformer oil arc extinguishing in the process of transferring the files.
According to the utility model, the other end of described Buchholz relay is connected to the bottom of a metal expander core body by pipeline, and the top of described metal expander core body is by metal hose and described oil conservator UNICOM.
According to the utility model, be provided with a fixation steel plate in the described oil conservator, described lever shaft is connected on the top of described fixation steel plate.
According to the utility model, be provided with a crossbeam in the described oil conservator, described lever shaft is connected on the described crossbeam.
According to the utility model, also be provided with a support on the described fuel tank, described support is provided with a described metal expander core body of case and oil conservator places in the described case.
According to the utility model, described case is provided with the oil level scale plate, and described metal expander core body is provided with the oil level pointer.
As further improvement of the utility model, described metal expander core body top also is provided with the core body protective valve.This core body protective valve is a relief valve, is used for metal expander core body earth pressure release, avoids causing metal expander to explode because pressure is excessive or damaging.
Further improve as of the present utility model, described Buchholz relay, metal expander core body and oil conservator all are connected with corresponding pipeline by flange, are convenient to keep in repair and dismounting during replacing.
Further improve as of the present utility model, also be provided with butterfly valve in the pipe between described Buchholz relay and the metal expander core body, this butterfly valve has on-off action, is used for the dredging oil circuit.
Further improve as of the present utility model, described piston valve is the tapered piston valve, and the sealing effectiveness when closed with union is better.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of the oil piping system of the utility model transformer.
Fig. 2 is the utility model lever and the structural representation of breathing dryer component.
Embodiment
With reference to Fig. 1, the oil piping system of a kind of transformer of the present utility model, include the fuel tank 19, Buchholz relay 2 and the oil conservator 21 that carry body, the end that described fuel tank 19 is connected with Buchholz relay connects by pipeline, the other end of described Buchholz relay 2 is connected to the bottom of a metal expander core body 10 by pipeline, the top of described metal expander core body 10 is by metal hose 5 and described oil conservator 21 UNICOMs; Be provided with a lever 18 in the described oil conservator 21, a termination one ball float 6 of described lever 18, the other end of described lever 18 are provided with a conical-plug valve 8 alive; Also be provided with a union 20 on the described oil conservator 21, an end of described union 20 and described piston valve 8 relative configurations, the other end stretch out breathing drier 13 of described oil conservator 21 rear connections.
Be provided with a fixation steel plate 15 in the described oil conservator 21, described lever 18 is coupling on the top of described fixation steel plate 15 by rolling bearing 7.
Described fuel tank 19 is provided with a support 16, and described support 16 is provided with a case 17 described metal expander core bodys 10 and oil conservator 21 places in the described case 17.
Described case 17 is provided with oil level scale plate 12, and described metal expander core body 10 is provided with oil level pointer 9.
Described metal expander core body 10 tops also are provided with core body protective valve 4.
Described Buchholz relay 2, metal expander core body 10 are connected with oil conservator all and are connected with corresponding pipeline by flange.
Also be provided with butterfly valve 3 in the pipe between described Buchholz relay 2 and the metal expander core body 10.
With reference to Fig. 2, breathing drier 13 is the container of a circle, and the air chamber of oil conservator is received in the upper end by union 20, and the lower end has air intake 1302 to communicate with atmosphere.Air intake 1302 places of lower end are provided with oil-sealing arrangement 1303.Drier 1304 is housed in the container body 1301.
Operation principle of the present utility model is as follows:
Loaded switch transfer the files and the main transformer running in, transformer oil is because the electrochemical action meeting produces various gases, because the density difference is circulated to the air chamber space of ball float 6 and piston valve 8 tops through the device oil circuit; Pressure strengthens when air compressing, transformer oil is subjected to the gas pressure-acting that metal expander core body 10 is expanded, oil reservoir descends, ball float 6 moves downward, ball float 6 and piston valve 8 take the rolling bearing 7 of lever 18 for the fulcrum rotation, piston valve 8 moves upward, and forms the gap between piston valve 8 and the union 20, and gas enters from union 20 and breathes drier 13 discharges; After ball float 6 top air and atmospheric pressure maintain an equal level, metal expander core body 10 shrinks, the oil reservoir of oil conservator 21 interior grease chambeies rises, ball float 6 moves upward, piston valve 8 moves downward, reach balance with ball float 6, the pipe sealing of union 20, thus reach the purpose of the gas of discharging transformer oil generation in service; Isolated simultaneously transformer oil and contacted with the direct of air, the impact of having avoided air humidity that transformer oil is caused.Because this device inside has oil pressure, be conducive to the loaded switch transformer oil arc extinguishing effect in the process of transferring the files.Have the body temperature of oil in transformer of carrying constantly to change with load, metal expander core body 10 is constantly flexible.
What should be understood that is: above-described embodiment is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection range of the present utility model.
Claims (10)
1. the oil piping system of a transformer, include the fuel tank (19), Buchholz relay (2) and the oil conservator (21) that carry body, described fuel tank (19) is connected 2 with Buchholz relay) an end connect by pipeline, it is characterized in that the other end of described Buchholz relay (2) is connected to an end of a metal expander core body (10) by pipeline, the other end of described metal expander core body (10) is by metal hose (5) and described oil conservator (21) UNICOM; Be provided with a lever (18) in the described oil conservator (21), a termination one ball float (6) or the floating drum of described lever (18), the other end of described lever (18) is provided with a piston valve (8); Also be provided with a union (20) on the described oil conservator (21), the configuration relative to described piston valve (8) of an end of described union (20), the other end connects an one-way exhaust valve or breathes drier (13) after stretching out described oil conservator (21).
2. the oil piping system of a kind of transformer as claimed in claim 1, it is characterized in that the other end of described Buchholz relay (2) is connected to the bottom of a metal expander core body (10) by pipeline, the top of described metal expander core body (10) is by metal hose (5) and described oil conservator (21) UNICOM.
3. the oil piping system of a kind of transformer as claimed in claim 1 is characterized in that being provided with a fixation steel plate (15) in the described oil conservator (21), and described lever (18) is coupling on the top of described fixation steel plate (15).
4. the oil piping system of a kind of transformer as claimed in claim 1 is characterized in that being provided with a crossbeam in the described oil conservator (21), and described lever (18) is coupling on described crossbeam.
5. the oil piping system of a kind of transformer as claimed in claim 1, it is characterized in that also being provided with on the described fuel tank (19) support (16), described support (16) is provided with the described metal expander core body of a case (17) (10) and oil conservator (21) places in the described case (17).
6. the oil piping system of a kind of transformer as claimed in claim 5 is characterized in that described case (17) is provided with oil level scale plate (12), and described metal expander core body (10) is provided with oil level pointer (9).
7. the oil piping system of a kind of transformer as claimed in claim 1 is characterized in that described metal expander core body (10) top also is provided with core body protective valve (4).
8. the oil piping system of a kind of transformer as claimed in claim 1 is characterized in that described Buchholz relay (2), metal expander core body (10) be connected 21 with oil conservator) all be connected with corresponding pipeline by flange.
9. the oil piping system of a kind of transformer as claimed in claim 1 also is provided with butterfly valve (3) on it is characterized in that in the pipe between described Buchholz relay (2) and the metal expander core body (10).
10. such as the oil piping system of any one described a kind of transformer of claim 1-9, it is characterized in that described piston valve (8) is tapered piston valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300968 CN202678049U (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300968 CN202678049U (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678049U true CN202678049U (en) | 2013-01-16 |
Family
ID=47498935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220300968 Expired - Fee Related CN202678049U (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737816A (en) * | 2012-06-25 | 2012-10-17 | 景宁畲族自治县电力公司 | Oil circuit system of transformer |
| CN108254683A (en) * | 2018-01-10 | 2018-07-06 | 宁波海蔓汽车科技有限公司 | Transformer Buchholz relay failure detector |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
-
2012
- 2012-06-25 CN CN 201220300968 patent/CN202678049U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737816A (en) * | 2012-06-25 | 2012-10-17 | 景宁畲族自治县电力公司 | Oil circuit system of transformer |
| CN108254683A (en) * | 2018-01-10 | 2018-07-06 | 宁波海蔓汽车科技有限公司 | Transformer Buchholz relay failure detector |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN112630637B (en) * | 2020-11-20 | 2023-05-30 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power 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 |
Granted publication date: 20130116 Termination date: 20140625 |
|
| EXPY | Termination of patent right or utility model |