CN102737816A - Oil circuit system of transformer - Google Patents
Oil circuit system of transformer Download PDFInfo
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- CN102737816A CN102737816A CN2012102150983A CN201210215098A CN102737816A CN 102737816 A CN102737816 A CN 102737816A CN 2012102150983 A CN2012102150983 A CN 2012102150983A CN 201210215098 A CN201210215098 A CN 201210215098A CN 102737816 A CN102737816 A CN 102737816A
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- oil
- transformer
- core body
- piping system
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Abstract
The invention discloses an oil circuit system of a transformer, and the oil circuit system comprises an oil tank with a load main body, a gas relay and an oil storage cabinet, wherein a pipeline between the gas relay and the oil storage cabinet is also provided with a metal expander core body; a lever is arranged inside the oil storage cabinet, one end of the lever is connected with a floating ball, and the other end of the lever is provided with a piston valve; and the oil storage cabinet is also provided with a tube connector, one end of the tube connector is opposite to the piston valve, and the other end of the tube connector is connected with an aspiration dryer. The oil circuit system of the transformer has beneficial effects that 1, transformer oil can be prevented from being directly contacted with the air, so that moisture in the air can be prevented from penetrating the transformer oil, and a permanent dampness prevention effect can be realized; 2, the gas generated by the running of the transformer and the level shifting of a load branching switch can be effectively exhausted; and 3, certain oil pressure can be realized, so that the arc extinguishing of the transformer in the level shifting process of the load switch can be favored.
Description
Technical field
The present invention 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 carries body is arranged at present, receives oil conservator behind the connection Buchholz relay.Oil conservator is divided into the air chamber on the 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 under any temperature and operation conditions, all be full of oil.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, last floating drum cascading water silver is connected over the ground, sends signal; When the catastrophe failure of transformer inside; 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 through a breathing drier is set.The container that is generally a circle of this breathing drier, the upper end is through the air chamber of union-screw coupling to oil conservator, and there are air intake and atmosphere in the lower end.In service at transformer, during the variations in temperature of insulating oil, air-breathing and scavenging action will take place in oil conservator, and air passes in and out oil conservator through breathing drier.The air intake place of breathing the drier lower end is provided with oil-sealing arrangement.Fill drier such as silica gel or calcium chloride at internal tank, suck airborne dust and moisture in order to remove.The operating respiratory of transformer respirator: with oily temperature rise, the volumetric expansion of oil, oil unnecessary in the fuel tank gets into the oil conservator grease chamber, makes grease chamber's volume become big, and the gas in the while oil conservator air chamber is squeezed through breathing drier enters atmosphere; When, oil volume low when the oily temperature drop in the fuel tank shunk, the oil of grease chamber got into fuel tank, and atmosphere is sucked into air chamber through respirator simultaneously.
This method has solved moistureproof drying problems well, but then needs frequent transposing drier in the relatively large area of air humidity, and need transformer be stopped labour in the transposing process, thereby increase equipment stops using as a servant number of times and time, is unfavorable for power transformation operation.
Summary of the invention
What the present invention will solve is the problems referred to above that prior art exists, and aims to provide a kind of oil piping system of enclosed transformer, can play moisture-proof role effectively, need not frequently change drier simultaneously, and power transmission and transformation line can reliablely and stablely be moved.
For addressing the above problem; The present invention adopts following technical scheme: a kind of oil piping system of transformer; Include the fuel tank, Buchholz relay and the oil conservator that carry body; One end of described fuel tank and Buchholz relay is connected through pipeline, and the other end that it is characterized in that described Buchholz relay is connected to an end of a metal expander core body through pipeline, and the other end of described metal expander core body is through 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 said lever, the other end of said lever is provided with a piston valve; Also be provided with a pipe on the described oil conservator, an end and the described piston valve of said pipe dispose relatively, 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 invention, loaded switch transfer the files and the main transformer running in, transformer oil is because the electrochemical action meeting produces all 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 compression; Transformer oil receives the gas pressure effect that the metal expander core body is expanded, and oil reservoir descends, and ball float moves downward; Ball float and piston valve are that fulcrum rotates with the rotation axis of lever; Piston valve moves upward, and forms the gap between piston valve and the couplet pipe, and gas is discharged from couplet pipe entering unidirectional valve or breathing drier; 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; Join the pipe sealing of pipe, thereby reach the purpose of the gas of discharging transformer oil generation in service; Isolated transformer oil simultaneously and contacted, the influence of having avoided air humidity that transformer oil is caused with the direct of air.Because this device inside has oil pressure, help 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.
Beneficial effect of the present invention is following:
1, isolated transformer oil and directly contacted, prevented that the water in air branch from infiltrating transformer oil, plays permanent moisture-proof role with air.
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, help the loaded switch transformer oil arc extinguishing in the process of transferring the files.
According to the present invention, the other end of described Buchholz relay is connected to the bottom of a metal expander core body through pipeline, and the top of described metal expander core body is through metal hose and described oil conservator UNICOM.
According to the present invention, be provided with a fixation steel plate in the described oil conservator, described lever shaft is connected on the top of said fixation steel plate.
According to the present invention, be provided with a crossbeam in the described oil conservator, described lever shaft is connected on the described crossbeam.
According to the present invention, 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 present invention, 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 present invention, 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 pressure is discharged, and avoids causing metal expander to explode because of pressure is excessive or damaging.
Further improve as of the present invention, described Buchholz relay, metal expander core body and oil conservator all are connected with corresponding pipeline through flange, dismounting when being convenient to maintenance and replacing again.
Further improve as of the present invention again, 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 to dredge oil circuit.
As improvement further of the present invention, described piston valve is the tapered piston valve, and the sealing effectiveness during with couplet pipe closure is better.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the structural representation of the oil piping system of transformer of the present invention.
Fig. 2 is lever of the present invention 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 invention; Include the fuel tank 19, Buchholz relay 2 and the oil conservator 21 that carry body; One end of described fuel tank 19 and Buchholz relay 2 is connected through pipeline, and the other end of described Buchholz relay 2 is connected to the bottom of a metal expander core body 10 through pipeline, and the top of described metal expander core body 10 is through 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 said lever 18, the other end of said lever 18 are provided with a conical-plug valve 8 alive; Also be provided with a pipe 20 on the described oil conservator 21, an end of said pipe 20 and described piston valve 8 dispose relatively, and the other end stretches out described oil conservator 21 backs and connects a breathing drier 13.
Be provided with a fixation steel plate 15 in the described oil conservator 21, described lever 18 is coupling on the top of said fixation steel plate 15 through 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 places in the described case 17 with oil conservator 21.
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 and oil conservator 21 all are connected with corresponding pipeline through 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 through joining pipe 20 in the upper end, and there are air intake 1302 and atmosphere in the lower end.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 invention is following:
Loaded switch transfer the files and the main transformer running in, transformer oil is because the electrochemical action meeting produces all 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 compression; Transformer oil receives the gas pressure effect that metal expander core body 10 is expanded, and oil reservoir descends, and ball float 6 moves downward; Ball float 6 and piston valve 8 are that fulcrum rotates with the rolling bearing 7 of lever 18; Piston valve 8 moves upward, and forms the gap between piston valve 8 and the couplet pipe 20, and gas is discharged from joining pipe 20 entering breathing driers 13; After ball float 6 top air and atmospheric pressure maintain an equal level; Metal expander core body 10 shrinks, and the oil reservoir of grease chamber rises in the oil conservator 21, and ball float 6 moves upward; Piston valve 8 moves downward; Reach balance with ball float 6, join the pipe sealing of pipe 20, thereby reach the purpose of the gas of discharging transformer oil generation in service; Isolated transformer oil simultaneously and contacted, the influence of having avoided air humidity that transformer oil is caused with the direct of air.Because this device inside has oil pressure, help 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: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
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 through pipeline with an end of Buchholz relay (2); The other end that it is characterized in that described Buchholz relay (2) is connected to an end of a metal expander core body (10) through pipeline, and the other end of described metal expander core body (10) is through 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 said lever (18), the other end of said lever (18) is provided with a piston valve (8); Also be provided with a pipe (20) on the described oil conservator (21), an end of said pipe (20) and described piston valve (8) be configuration relatively, and the other end stretches out described oil conservator (21) back and connects an one-way exhaust valve or breathe drier (13).
2. the oil piping system of a kind of transformer as claimed in claim 1; The other end that it is characterized in that described Buchholz relay (2) is connected to the bottom of a metal expander core body (10) through pipeline, and the top of described metal expander core body (10) is through 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 said 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) and oil conservator (21) all are connected with corresponding pipeline through 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. like 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 a tapered piston valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102150983A CN102737816A (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102150983A CN102737816A (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102737816A true CN102737816A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102150983A Pending CN102737816A (en) | 2012-06-25 | 2012-06-25 | Oil circuit system of transformer |
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| Country | Link |
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| CN (1) | CN102737816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150132A2 (en) * | 1984-01-24 | 1985-07-31 | Mitsubishi Denki Kabushiki Kaisha | On-load tap changer |
| CN2344710Y (en) * | 1997-10-16 | 1999-10-20 | 卢金春 | Electric water heater |
| CN101256880A (en) * | 2008-01-03 | 2008-09-03 | 常州市华电变压器厂 | Oil level gauge oil conservator |
| CN201174293Y (en) * | 2008-04-08 | 2008-12-31 | 张贵华 | Ripple inner oil type fully sealed oil-storage cabinet |
| CN201804666U (en) * | 2010-08-19 | 2011-04-20 | 于孝增 | Stepped combined metal bellows oil conservator |
| CN202678049U (en) * | 2012-06-25 | 2013-01-16 | 景宁畲族自治县电力公司 | Oil circuit system of transformer |
-
2012
- 2012-06-25 CN CN2012102150983A patent/CN102737816A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150132A2 (en) * | 1984-01-24 | 1985-07-31 | Mitsubishi Denki Kabushiki Kaisha | On-load tap changer |
| CN2344710Y (en) * | 1997-10-16 | 1999-10-20 | 卢金春 | Electric water heater |
| CN101256880A (en) * | 2008-01-03 | 2008-09-03 | 常州市华电变压器厂 | Oil level gauge oil conservator |
| CN201174293Y (en) * | 2008-04-08 | 2008-12-31 | 张贵华 | Ripple inner oil type fully sealed oil-storage cabinet |
| CN201804666U (en) * | 2010-08-19 | 2011-04-20 | 于孝增 | Stepped combined metal bellows oil conservator |
| CN202678049U (en) * | 2012-06-25 | 2013-01-16 | 景宁畲族自治县电力公司 | Oil circuit system of transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |