CN205751769U - A kind of pressure relief device of oil-immersed type transformer - Google Patents
A kind of pressure relief device of oil-immersed type transformer Download PDFInfo
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- CN205751769U CN205751769U CN201620446019.3U CN201620446019U CN205751769U CN 205751769 U CN205751769 U CN 205751769U CN 201620446019 U CN201620446019 U CN 201620446019U CN 205751769 U CN205751769 U CN 205751769U
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- oil
- pressure relief
- fuel tank
- tank
- relief device
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Abstract
This utility model discloses the pressure relief device of a kind of oil-immersed type transformer, it is positioned at the top of oil tank of transformer, including gas relay, pressure release room and pressure relief valve, top of oil-tank is positioned at the position bottom described gas relay and is provided with the trachea stretching into fuel tank, top of oil-tank is positioned at the position bottom described pressure release room and is provided with the water conservancy diversion oil pipe stretching into fuel tank, and described water conservancy diversion oil pipe stretches into the vertical length of fuel tank and stretches into the vertical length of fuel tank more than trachea.With pressure relief device, transformator is protected; it is possible not only to realize the repertoire of comprehensive gas protector in prior art; and the most integrated functional separation is realized; solve the related adverse effect between each function; and add pressure release room; reach the function of oil tank of transformer autonomous respiration, rational in infrastructure, practical.
Description
Technical field
This utility model relates to a kind of transformator, the pressure relief device of a kind of oil-immersed type transformer.
Background technology
Existing conventional oil-immersed type transformer is the heat radiation being realized transformator by the corrugated plate outside transformator, realizes reporting to the police, trip and discharging the function of pressure by comprehensive gas protector.Make fuel tank when breaking down in, gas increases, and when pressure becomes big, corrugated plate expands to reduce oil level.The volume of this kind of oil-immersed type transformer is bigger, it is impossible to meet the space requirement of the small-sized shield machine of urban pipe network, and comprehensive gas protector is by integrated for each function, and a function can not realize causing other functions all can not realize, and work efficiency is relatively low.
Summary of the invention
The purpose of this utility model is to disclose the pressure relief device of a kind of oil-immersed type transformer, by each component function of pressure release separately, improves work efficiency.
The technical solution of the utility model is: the pressure relief device of a kind of oil-immersed type transformer, it is positioned at the top of oil tank of transformer, including gas relay, pressure release room and pressure relief valve, top of oil-tank is positioned at the position bottom described gas relay and is provided with the trachea stretching into fuel tank, top of oil-tank is positioned at the position bottom described pressure release room and is provided with the water conservancy diversion oil pipe stretching into fuel tank, and described water conservancy diversion oil pipe stretches into the vertical length of fuel tank and stretches into the vertical length of fuel tank more than trachea.
Described pressure release room is cuboid, and including four side plates and a top board, the upper edge of side plate outwards bends 90 degree, and the bending part of side plate upper edge is tightly connected by screw bolt and nut with top board surrounding.
It is provided with sealing ring between described bending part and top board, is provided with the big steel ring controlling sealing ring decrement outside sealing ring, inside sealing ring, is provided with the drum rim of positioning seal ring.
It is sequentially provided with spring washer, plain cushion and rubbery flat gasket from top to bottom between head and the top board of described bolt, between bending part and nut, is sequentially provided with plain cushion and spring washer from top to bottom.
Described water conservancy diversion oil pipe stretches into the edge of fuel tank one end than described endotracheal float center of circle in the vertical direction long 5-10 millimeter.
Described pressure relief device also includes the pipe type oil-level gauge being connected with fuel tank.
Compared with prior art, this utility model has a following beneficial effect:
1, with pressure relief device, transformator is protected, it is possible not only to realize the repertoire of comprehensive gas protector in prior art, and the most integrated functional separation is realized, solve the related adverse effect between each function, and add pressure release room, when transformator breaks down, transformer oil produces gas, tank internal pressure becomes big, oil in fuel tank enters pressure release room by water conservancy diversion oil pipe, after transformer fault is got rid of, the oil of pressure release room flow back into oil tank of transformer, substitute and prior art utilizes corrugated plate expansion reduce oil level, change by pressure release room pressure, reach the function of oil tank of transformer autonomous respiration；
If 2 have a small amount of gas to enter gas relay, then the light gas float action of gas relay sends alarm signal, staff opens the vent valve of gas relay in time and exits to fix a breakdown, if there being a large amount of gas to enter gas relay, then oil gas impact baffle plate, making grave gas action of relay contact, send trip signal, high-voltage switch gear trips to fix a breakdown；When inside electric appliance breaks down, and staff open the most in time gas relay air valve venting time, pressure relief valve automatically turns on the pressure discharging in fuel tank, avoid fuel tank deformation or explosion, when tank pressure drops to the closing presure value set, pressure relief valve reliably closes, it is to avoid outside moisture and impurity enter in fuel tank；
3, top and the side plate of pressure release room is sealed by bolt, nut and sealing ring, and is provided with plain cushion, spring washer and rubbery flat gasket, improves sealing effectiveness and protects sheet material, rational in infrastructure, practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing in Fig. 1 at the top board of pressure release room and side plate bending part sealing.
1: gas relay, 2: pressure release room, 21: side plate, 211: bending part, 22: top board, 23: bolt, 24: nut, 25: sealing ring, 261: big steel ring, 262: drum rim, 27: spring washer, 28: plain cushion, 29: rubbery flat gasket, 3: pressure relief valve, 4: trachea, 5: water conservancy diversion oil pipe, 6: oil level indicator.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model.Such as Fig. 1, the pressure relief device of a kind of oil-immersed type transformer of the present utility model is positioned at the top of oil tank of transformer, including gas relay 1, pressure release room 2 and pressure relief valve 3, top of oil-tank is positioned at the position bottom described gas relay 1 and is provided with the trachea 4 stretching into fuel tank, top of oil-tank is positioned at the position bottom described pressure release room 2 and is provided with the water conservancy diversion oil pipe 5 stretching into fuel tank, and described water conservancy diversion oil pipe 5 stretches into the vertical length of fuel tank and stretches into the vertical length of fuel tank more than trachea 4.Described pressure relief device 2 can also include the pipe type oil-level gauge 6 being connected with fuel tank, facilitates staff to observe the oil level in fuel tank.
Fig. 2 is the partial enlarged drawing in Fig. 1 at the top board of pressure release room and side plate bending part sealing.Such as Fig. 1 and Fig. 2, described pressure release room 2 is cuboid, including four side plates 21 and a top board 22, side plate 21 and top board 22 are all firm plates, side plate 21 upper edge outwards bends 90 degree, bending part 211 and plane-parallel, bending part 211 is tightly connected by bolt 23 and nut 24 with top board 22 surrounding.It is provided with sealing ring 25 between described bending part 211 and top board 22, is provided with the big steel ring 261 controlling sealing ring 25 decrement outside sealing ring 25, inside sealing ring 25, is provided with the drum rim 262 of positioning seal ring 25.
It is sequentially provided with spring washer 27, plain cushion 28 and rubbery flat gasket 29 between bolt 23 head and top board 22 from top to bottom, between bending part 211 and nut 24, is sequentially provided with plain cushion 28 and spring washer 27 from top to bottom.Wherein, spring washer 27 effect is to push against bolt 23 head or nut 24, increasing friction force, prevents loosened screw so that it is difficult drop-off, plays a certain amount of buffer protection function during stress.The effect of plain cushion 28 is enlarged contact areas, avoids the spring washer 27 infringement when unloading screw to plate face.During installation, plain cushion 28 to be made againsts plate face, and spring washer 27 is between plain cushion 28 and bolt 23 head, or between plain cushion 28 and nut 24.The effect of rubbery flat gasket 29 mainly protection top board 22 enamelled coating above, when fastening bolt 23, enamelled coating is not destroyed.
Preferably, described water conservancy diversion oil pipe 5 stretches into the edge of fuel tank one end than the float center of circle in the vertical direction long 5-10 millimeter in described trachea 4.
Transformer fault mainly has transformator turn-to-turn and layer short circuit, iron core fault, inside pipe casing fault, the internal broken string of winding and insulation degradation etc..The gas relay 1 sensitive sensor transformer fault of energy is also protected.When power transformer interior fault, it is overheated that trouble point locally occurs, neighbouring transformer oil is caused to expand, the air dissolved in oil is expelled out of, formation bubble rises, oil and other material ionize under the effect of electric arc and electric discharge etc. and produce gas, make tank internal pressure become big, and the oil in fuel tank enters pressure release room 2 by water conservancy diversion oil pipe 5.If fault is slight, a small amount of gas of discharge slowly ascends into gas relay 1, and the light gas float action of gas relay 1 sends signal alarm, and staff opens the vent valve of gas relay 1 in time and exits to fix a breakdown.If there being a large amount of other to enter gas relay 1, then oil gas impact baffle plate, making grave gas action of relay contact, sending trip signal, high-voltage switch gear trips to fix a breakdown.After transformer fault is got rid of, the oil of pressure release room 2 flow back into oil tank of transformer, by the change of pressure release room 2 pressure, reaches the function of oil tank of transformer autonomous respiration.
When inside electric appliance breaks down, and staff open the most in time gas relay 1 air valve venting time, pressure relief valve 3 automatically turns on the pressure discharging in fuel tank, avoid fuel tank deformation or explosion, when tank pressure drops to the closing presure value set, pressure relief valve 3 reliably closes, it is to avoid outside moisture and impurity enter in fuel tank.
Claims (6)
1. the pressure relief device of an oil-immersed type transformer, it is characterized in that, it is positioned at the top of oil tank of transformer, including gas relay (1), pressure release room (2) and pressure relief valve (3), top of oil-tank is positioned at the position of described gas relay (1) bottom and is provided with the trachea (4) stretching into fuel tank, top of oil-tank is positioned at the position of described pressure release room (2) bottom and is provided with the water conservancy diversion oil pipe (5) stretching into fuel tank, and described water conservancy diversion oil pipe (5) is stretched into the vertical length of fuel tank and stretched into the vertical length of fuel tank more than trachea (4).
The pressure relief device of a kind of oil-immersed type transformer the most according to claim 1, it is characterized in that, described pressure release room (2) is cuboid, including four side plates (21) and a top board (22), the upper edge of side plate (21) outwards bends 90 degree, and the bending part (211) of side plate upper edge is tightly connected by bolt (23) and nut (24) with top board (22) surrounding.
The pressure relief device of a kind of oil-immersed type transformer the most according to claim 2, it is characterized in that, sealing ring (25) it is provided with between described bending part (211) and top board (22), sealing ring (25) outside is provided with the big steel ring (261) controlling sealing ring (25) decrement, and sealing ring (25) inner side is provided with the drum rim (262) of positioning seal ring (25).
The pressure relief device of a kind of oil-immersed type transformer the most according to claim 2, it is characterized in that, it is sequentially provided with spring washer (27), plain cushion (28) and rubbery flat gasket (29) from top to bottom between head and the top board (22) of described bolt (23), between bending part (211) and nut (24), is sequentially provided with plain cushion (28) and spring washer (27) from top to bottom.
The pressure relief device of a kind of oil-immersed type transformer the most according to claim 1, it is characterised in that described water conservancy diversion oil pipe (5) stretches into the edge of fuel tank one end than the float center of circle in the vertical direction long 5-10 millimeter in described trachea (4).
The pressure relief device of a kind of oil-immersed type transformer the most according to claim 1, it is characterised in that described pressure relief device also includes the pipe type oil-level gauge (6) being connected with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446019.3U CN205751769U (en) | 2016-05-17 | 2016-05-17 | A kind of pressure relief device of oil-immersed type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446019.3U CN205751769U (en) | 2016-05-17 | 2016-05-17 | A kind of pressure relief device of oil-immersed type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205751769U true CN205751769U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620446019.3U Active CN205751769U (en) | 2016-05-17 | 2016-05-17 | A kind of pressure relief device of oil-immersed type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205751769U (en) |
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2016
- 2016-05-17 CN CN201620446019.3U patent/CN205751769U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee after: Xuchang yushengchang Electric Co.,Ltd. Address before: 461000 Xuchang economic and Technological Development Zone, Henan, Xuchang Patentee before: XUCHANG XUJI DISTRIBUTION Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |