CN210865824U - Cooling system of oil-immersed transformer - Google Patents
Cooling system of oil-immersed transformer Download PDFInfo
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- CN210865824U CN210865824U CN201922159872.3U CN201922159872U CN210865824U CN 210865824 U CN210865824 U CN 210865824U CN 201922159872 U CN201922159872 U CN 201922159872U CN 210865824 U CN210865824 U CN 210865824U
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Abstract
The utility model discloses a cooling system of an oil-immersed transformer, which comprises an oil pipe loop and a cooling system, wherein the oil pipe loop comprises an oil pumping pipe, an oil well pump, an oil delivery pump and an oil delivery pipe, and the cooling system comprises a wind shield, a pressurizing hole, a fan set, a cooling plate, a heat conducting plate and a cooling pool; the top of an oil-immersed transformer lateral wall is equipped with oil pumping pipe, the bottom of another lateral wall of oil-immersed transformer is equipped with send oil pipe, oil pumping pipe middle part is equipped with the oil-well pump, send oil pipe middle part to be equipped with the oil-delivering pump, oil pumping pipe and send to be equipped with cooling system between the oil pipe, pump the inside transformer oil pumping of oil-immersed transformer to the cooling bath through the oil-well pump in, the heat-conducting plate in the cooling bath absorbs the temperature of transformer oil to conveying to the cooling plate, the pressure boost hole is tubaeform, and when the gas circulation of the great one end of pressure boost hole opening was to the less one end of opening, gas was pressurized, and gas temperature reduces, and the inside temperature of transformer remains throughout below 80 ℃.
Description
Technical Field
The utility model relates to a cooling system of transformer, more specifically the utility model relates to a cooling system of oil-immersed transformer.
Background
When the power is transmitted in a long distance, a transformer is needed to be used for increasing the voltage in a power station, a transformer is needed to be used for reducing the voltage to a civil voltage in a residential area, the transformer is used as a necessary device for transmitting the power in the long distance, the stability of the transformer needs to be ensured, one factor causing great damage to the transformer comes from the temperature, the number of windings in the transformer is large, the current and the voltage are large, the heat generated in the transformer is large, the common transformer at present is an oil-immersed transformer, the oil-immersed transformer can operate according to the regulation of a nameplate under the specified cooling condition, but the maximum oil temperature at the top layer cannot exceed 90 ℃, in order to prevent the insulation aging of the transformer, the oil temperature at the top layer cannot usually exceed 85 ℃, and the alarm constant value is set to be 80 ℃, so the cooling speed of.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides an oil-immersed transformer's cooling system has the fast advantage of cooling rate.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a cooling system of oil-immersed transformer, including cooling bath, oil-well pump and oil feed pump, the cooling bath is separated into the forced air cooling radiating area and the water conservancy diversion radiating area of left and right sides by a vertical cooling plate, the oil-pumping mouth of oil-well pump is connected with the one end of taking out oil pipe, and the other end of taking out oil pipe has the connecting portion of connecting into the vary voltage oil circuit of oil-immersed transformer, the oil-out of oil-well pump inserts the interior bottom of the water conservancy diversion radiating area of cooling bath through the oil pumping union coupling, the lateral wall top of the water conservancy diversion radiating area of cooling bath connects the one end of oil feed pipe, and the other end of oil feed pipe has the connecting portion of connecting into the vary voltage oil circuit of oil-immersed transformer; a diversion heat dissipation plate is arranged in a diversion heat dissipation area of the cooling pool, a fan set and a wind shield are arranged in an air cooling heat dissipation area of the cooling pool, a horn-shaped pressurizing hole is formed in the wind shield, one end of the pressurizing hole with a smaller aperture is close to the cooling plate, and the wind direction of the fan set faces the wind shield; the cooling plate, the heat conducting plate and the cooling pool are all made of metal materials.
The variable pressure oil in the oil-immersed transformer is pumped into the cooling pool through the oil pump, the temperature of the variable pressure oil is absorbed by the heat conducting plate in the cooling pool and is transmitted to the cooling plate, the pressurizing hole is horn-shaped, when the gas at one end with a large opening of the pressurizing hole flows to one end with a small opening, the gas is pressurized, at the moment, the temperature of the gas is reduced, and the cooling plate and the heat conducting plate are made of metal materials, so that the heat conductivity is strong, the temperature of the variable pressure oil is reduced quickly, and the temperature in the transformer is kept below 80 ℃ all the time.
Preferably, at least five diversion heat dissipation plates arranged in parallel are arranged in the diversion heat dissipation area of the cooling pool, and all the diversion heat dissipation plates form an S-shaped oil path.
The more the number of the heat conducting plates is, the more the heat in the transformer oil is conducted to the cooling plate, and an S-shaped passage is formed by utilizing the heat conducting plates, so that the flow path of the transformer oil is increased, and the heat dissipation is facilitated.
Preferably, the pressure boost hole on the deep bead is the matrix arrangement, and at least 3x3, the terminal surface of the great one end in pressure boost hole aperture with deep bead surface parallel and level, and the opening area sum of the great one end in all pressure boost hole apertures is not less than four fifths of the area of deep bead length and width place.
A plurality of pressurizing holes are formed in the wind shield with the limited area as far as possible, so that more gas can circulate in the space between the wind shield and the cooling plate, the cooling of the cooling plate is accelerated, and the cooling speed of the transformer oil is accelerated.
Preferably, the water conservancy diversion radiating area is airtight space, in the region between the cooling plate in forced air cooling radiating area and the deep bead, the top in cooling tank is equipped with the exhaust vent, the region is airtight space between the cold deep bead in forced air cooling radiating area and the fan group, the fan group is established on the lateral wall in cooling tank, the gas flow of fan group is greater than the sum of the gas flow in all pressure boost holes.
Because the gas flow of fan group is greater than the gas flow of pressure boost hole, the atmospheric pressure that the deep bead was equipped with fan group one side is higher than the atmospheric pressure that is equipped with cooling plate one side, and the velocity of flow of gas in cooling plate one side accelerates for the gas temperature who contacts the cooling plate is low and the velocity of flow is fast, further promotes the cooling rate of transformer oil.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the variable pressure oil in the oil-immersed transformer is pumped into the cooling pool through the oil pump, the temperature of the variable pressure oil is absorbed by the heat conduction plate in the cooling pool and is transmitted to the cooling plate, the pressurizing hole is horn-shaped, when the gas at one end with a larger opening of the pressurizing hole flows to one end with a smaller opening, the gas is pressurized, at the moment, the temperature of the gas is reduced, and the temperature of the variable pressure oil is quickly reduced because the cooling plate and the heat conduction plate are made of metal materials and have strong heat conductivity, so that the temperature in the transformer is always kept below 80 ℃;
2. the more the number of the heat conduction plates is, the more the heat in the transformer oil is conducted to the cooling plate, and an S-shaped passage is formed by utilizing the heat conduction plates, so that the flow path of the transformer oil is increased, and the heat dissipation is facilitated;
3. a plurality of pressurizing holes are formed in the wind shield with limited area as much as possible, so that more gas flows in the space between the wind shield and the cooling plate, the cooling of the cooling plate is accelerated, and the cooling speed of the transformer oil is accelerated;
4. because the gas flow of fan group is greater than the gas flow of pressure boost hole, the atmospheric pressure that the deep bead was equipped with fan group one side is higher than the atmospheric pressure that is equipped with cooling plate one side, and the velocity of flow of gas in cooling plate one side accelerates for the gas temperature who contacts the cooling plate is low and the velocity of flow is fast, further promotes the cooling rate of transformer oil.
Drawings
Fig. 1 is a schematic top view of a cooling system of an oil-immersed transformer according to embodiment 1 of the present invention;
fig. 2 is a schematic longitudinal sectional view of a cooling pool according to embodiment 2 of the present invention;
fig. 3 is a perspective cross-sectional view of a cooling system of an oil-immersed transformer according to embodiments 1 to 4 of the present invention;
description of reference numerals:
the method comprises the following steps of 1-oil immersed transformer, 2-oil delivery pump, 3-oil delivery pipe, 4-wind shield, 5-pressurizing hole, 6-fan set, 7-cooling plate, 8-heat conducting plate, 9-cooling pool, 10-oil pumping pipe and 11-oil pump.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1:
as shown in figure 1, a cooling system of an oil-immersed transformer comprises an oil-immersed transformer 1 provided with transformer oil, and further comprises a cooling pool 9, the cooling pool 9 is divided into an air cooling heat dissipation area and a diversion heat dissipation area by a vertically arranged cooling plate 7, one end of an oil delivery pipe 3 is installed on a transformer oil circuit of the oil-immersed transformer 1, the other end of the oil delivery pipe 3 is installed on an input end of the diversion heat dissipation area, an output end of the diversion heat dissipation area is installed on one end of an oil pumping pipe 10, the other end of the oil pumping pipe 10 is connected on the transformer oil circuit of the oil-immersed transformer 1, the oil delivery pipe 3 is provided with an oil delivery pump 2, the oil pumping pipe 10 is provided with an oil well pump 11, the diversion heat dissipation area comprises the cooling plate 7, the heat conduction plate 8 and the cooling pool 9, the cooling pool 9 is cuboid in shape, the oil pumping pipe 10 is installed at, a plurality of heat conducting plates 8 are vertically arranged in the cooling pool 9, the length of each heat conducting plate 8 is smaller than that of the cooling pool 9, the long edges of the heat conducting plates 8 are arranged at the bottom of the cooling pool 9, one end of each heat conducting plate 8 is arranged at one end of the cooling pool 9, the width of each heat conducting plate 8 is smaller than the height of the cooling pool 9, the length direction of each heat conducting plate 8 is parallel to the length direction of the cooling pool 9, the other end of each heat conducting plate 8 is arranged on the cooling plate 7, the length direction of each heat conducting plate 8 is perpendicular to the length direction of the cooling plate 7, and the length and the width of each cooling plate 7 are equal to; the air-cooled radiating area comprises a wind shield 4, a pressurizing hole 5 and a fan set 6, the wind shield 4, a heat conducting plate 8 and a cooling plate 7 are rectangular thin plates, the middle part of the air-cooled radiating area is provided with the wind shield 4, the external dimension of the wind shield 4 is equal to the external dimension of the cooling plate 7, the length direction of the wind shield 4 is parallel to the length direction of the cooling plate 7, the distance between the wind shield 4 and the cooling plate 7 is not less than three times of the thickness of the cooling plate 7, the length of the wind shield 4 is equal to the width of the inner space of a cooling pool 9, the wind shield 4 is provided with a plurality of pressurizing holes 5, the pressurizing holes 5 are horn-shaped, one end with a smaller opening faces the cooling plate 7, the side with a larger opening faces the end face of the cooling pool 9, the fan set 6 is arranged on the end face, the gas flow of the fan set 6 is greater than that, the oil pump 11 and the oil feeding pump 2 can accelerate the circulation of the transformer oil in the cooling system and the oil-immersed transformer 1, the heat in the transformer oil is conducted to the cooling plate by the heat conducting plate 8 in the cooling pool 9, the gas of the fan set 6 is pressurized through the horn-shaped pressurizing hole 5, the temperature of the gas is reduced, and the temperature of the gas is reduced because the cooling plate and the heat conducting plate are made of metal aluminum, so that the heat conductivity is high, the temperature of the transformer oil is reduced quickly, and the temperature in the transformer is kept below 80 ℃ all the time.
Example 2:
compared with the embodiment 1, the following scheme is also included:
in order to improve the cooling efficiency, the number of the heat conduction plates 8 is not less than five, in addition, when the heat conduction plates are installed, the distance between every two heat conduction plates 8 is equal, when the heat conduction plates are installed, the bottom edge of one heat conduction plate 8 which is close to the oil pumping pipe 10 on the outermost edge is attached to the bottom of the cooling pool 9, the heat conduction plate 8 beside is attached to the top of the cooling pool 9, and the like, all the heat conduction plates 8 form an S-shaped passage, through the mode, the circulation path of the transformer oil in the cooling pool 9 is increased, the contact time of the transformer oil and the heat conduction plates 8 is prolonged, and the heat loss is more facilitated.
Example 3:
compared with the embodiment 2, the following scheme is also included:
the pressure boost hole 5 that distributes on deep bead 4 is the matrix type, and the matrix is not less than 3X3, simultaneously, the great one end terminal surface of pressure boost hole 5 opening and deep bead 4's surface parallel and level, the opening total area of the great one end of opening is not less than the four fifths of deep bead 4 area, the bore of the great one end of opening is not less than twice of the less one end bore of opening, on the limited deep bead 4 of area, set up a plurality of pressure boost holes 5 as far as possible, make and be in the space between deep bead 4 and cooling plate 7 and circulate more gas, the cooling of cooling plate 7 is accelerated, promote the cooling speed of transformer oil.
Example 4:
compared with the embodiment 3, the following scheme is also included:
the end of the cooling pool 9 provided with the fan set 6 is provided with an air inlet of the fan set, the end of the cooling pool 9 and the wind shield 4 form a closed space, the end of the cooling pool 9 provided with the heat conducting plate 8 and the cooling plate 7 form a closed space, an air outlet is arranged on the top surface of the cooling pool 9 between the cooling plate 7 and the wind shield 4, the total flow of the air of the fan set 6 is larger than the total flow of the air of the pressurizing hole 5, because the air flow of the fan set 6 is larger than that of the pressurizing hole 5, the air pressure at the side of the wind shield 4 where the fan set 6 is arranged is higher than that at the side where the cooling plate 7 is arranged, the flow velocity of the air at the side of the cooling plate 7 is accelerated, so that the temperature of the air contacting the cooling plate 7 is low and the flow velocity is high, the embodiment mentioned above only expresses the concrete implementation of the utility model for further improving the cooling speed of the transformer oil, the description is more specific and detailed, but should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The cooling system of the oil-immersed transformer is characterized by comprising a cooling pool, an oil well pump and an oil delivery pump, wherein the cooling pool is divided into an air cooling heat dissipation area and a flow guide heat dissipation area on the left side and the right side by a vertical cooling plate, an oil pumping port of the oil well pump is connected with one end of an oil pumping pipe, the other end of the oil pumping pipe is provided with a connecting part connected into a transformation oil way of the oil-immersed transformer, an oil outlet of the oil well pump is connected into the inner bottom of the flow guide heat dissipation area of the cooling pool through an oil pumping pipe, the top of the side wall of the flow guide heat dissipation area of the cooling pool is connected with one end of the oil delivery pipe, the other end of the oil delivery pipe is provided with a connecting part connected; a diversion heat dissipation plate is arranged in a diversion heat dissipation area of the cooling pool, a fan set and a wind shield are arranged in an air cooling heat dissipation area of the cooling pool, a horn-shaped pressurizing hole is formed in the wind shield, one end of the pressurizing hole with a smaller aperture is close to the cooling plate, and the wind direction of the fan set faces the wind shield; the cooling plate, the heat conducting plate and the cooling pool are all made of metal materials.
2. The oil-immersed transformer cooling system according to claim 1, wherein at least five parallel flow guide heat dissipation plates are arranged in the flow guide heat dissipation area of the cooling pool, and all the flow guide heat dissipation plates form an S-shaped oil path.
3. The cooling system for oil-filled transformer according to claim 2, characterized in that: the pressure boost hole on the deep bead is the matrix arrangement, and at least 3x3, the terminal surface of the great one end in pressure boost hole aperture with deep bead surface parallel and level, and the opening area sum of the great one end in all pressure boost hole apertures is not less than four fifths of the area of deep bead length and width place.
4. An oil filled transformer cooling system according to claim 3, characterized by: the utility model discloses a cooling pond, including cooling pond, water conservancy diversion radiating area, fan group, air cooling radiating area, air-cooling radiating area, air current guide radiating area is airtight space, in the region between cooling plate and the deep bead of air cooling radiating area, the top of cooling pond is equipped with the exhaust vent, the region is airtight space between the cold deep bead of air cooling radiating area and the fan group, the fan group is established on the lateral wall of cooling pond, the gas flow of fan group is greater than the sum of the gas flow in all pressure boost holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922159872.3U CN210865824U (en) | 2019-12-05 | 2019-12-05 | Cooling system of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922159872.3U CN210865824U (en) | 2019-12-05 | 2019-12-05 | Cooling system of oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN210865824U true CN210865824U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922159872.3U Active CN210865824U (en) | 2019-12-05 | 2019-12-05 | Cooling system of oil-immersed transformer |
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| CN (1) | CN210865824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571299A (en) * | 2021-09-24 | 2021-10-29 | 徐州鹏程电气有限公司 | Transformer capable of circularly radiating |
-
2019
- 2019-12-05 CN CN201922159872.3U patent/CN210865824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571299A (en) * | 2021-09-24 | 2021-10-29 | 徐州鹏程电气有限公司 | Transformer capable of circularly radiating |
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