CN219457300U - Sealing structure of transformer box body - Google Patents
Sealing structure of transformer box body Download PDFInfo
- Publication number
- CN219457300U CN219457300U CN202320625972.4U CN202320625972U CN219457300U CN 219457300 U CN219457300 U CN 219457300U CN 202320625972 U CN202320625972 U CN 202320625972U CN 219457300 U CN219457300 U CN 219457300U
- Authority
- CN
- China
- Prior art keywords
- oil tank
- sealing gasket
- bending part
- bolt
- tank cover
- Prior art date
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 238000005452 bending Methods 0.000 claims abstract description 56
- 239000000203 mixture Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The transformer box body sealing structure comprises an oil tank cover, a semicircular square neck bolt, a sealing gasket and a bolt sealing gasket; the sealing gasket and the bolt sealing gasket are arranged between the oil tank cover and the oil tank body; the oil tank cover and the oil tank body are provided with a first bending part which is bent upwards at one end, close to the oil tank, of the sealing gasket, and the upward bending angle of the first bending part of the oil tank body is larger than that of the oil tank cover. The first bending angle of the first bending part of the oil tank body is larger than that of the oil tank cover, and the two inclined planes are abutted until the two inclined planes are in complete contact due to the action of the bolt, so that an oil-gas mixture of the transformer during working needs to pass through the two mutually contacted surfaces of the first bending part when reaching the sealing gasket, the oil-gas mixture is difficult to reach the sealing gasket, and the physical and chemical properties of the sealing gasket cannot be changed due to the combination of the temperature difference change between day and night, and the sealing gasket can be enabled to be longer in sealing effect.
Description
Technical Field
The utility model relates to the technical field of transformer manufacturing, in particular to a transformer box sealing structure.
Background
The sealing of the oil tank is very important to the quality of transformer oil in the transformer, and the oil tank is not tightly sealed, so that the transformer oil is easy to be immersed into other impurities such as water vapor and dust, and the insulation performance of the transformer oil is reduced.
Chinese patent document CN 209471805U describes a novel transformer tank edge sealing structure for sealing a tank cover of a tank
The traditional round hole is improved into a square hole, a half round head square neck bolt is used for a box edge bolt, bidirectional fixed installation is not needed, and damage to the end part of the bolt is avoided; the edge part of the box cover is bent, so that rainwater is fully protected from entering the oil tank, and ultraviolet rays are prevented from directly irradiating the sealing piece.
However, in the above structure, in the long-term use of the transformer, the heat generated by the transformer current causes the formation of an oil-gas mixture at the top of the transformer, the temperature is very high due to the irradiation of sunlight and the peak of electricity consumption in daytime, the temperature difference between the two is relatively large at night due to the reduction of the air temperature and the reduction of the electricity consumption, the change of the combination temperature difference of the oil-gas mixture acts on the sealing gasket, the physical and chemical properties of the sealing gasket are changed, and the sealing effect is weakened.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a transformer tank sealing structure which can ensure the sealing effect of an oil tank well.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the transformer box body sealing structure comprises an oil tank cover, a semicircular square neck bolt, a sealing gasket and a bolt sealing gasket; the oil tank cover is provided with a square hole, and the shape of the square hole corresponds to the shape of the square neck part of the semicircular head square neck bolt; the square neck part of the semicircular head square neck bolt penetrates through the square hole in the oil tank cover to be connected with the oil tank cover; the bottom of the semicircular head square neck bolt penetrates through the oil tank body and is fixedly connected with the oil tank body through a nut; the sealing gasket and the bolt sealing gasket are arranged between the oil tank cover and the oil tank body; the sealing gasket is in a cylindrical strip shape, and the diameter of the section of the sealing gasket is 1.2-2 times of that of the section of the bolt sealing gasket;
the oil tank cover and the oil tank body are provided with a first bending part which is bent upwards at one end, close to the oil tank, of the sealing gasket, and the upward bending angle of the first bending part of the oil tank body is larger than that of the oil tank cover.
The oil tank cover and the oil tank body are provided with the second bending part at one end, far away from the oil tank, of the bolt sealing gasket, and the two inclinations of the second bending part on the oil tank cover and the oil tank body are different, so that after the semicircular head square neck bolt is fastened, the two surfaces on the inner side of the second bending part are in contact with each other.
The end part of the second bending part of the oil tank cover is provided with a buckling bending part, and the buckling bending part buckles the second bending part on the oil tank body.
The second bending part bends upwards.
According to the transformer tank sealing structure provided by the utility model, the upward bending angle of the first bending part of the tank body is larger than that of the first bending part of the tank cover, and the two inclined planes are in contact until the two inclined planes are in complete contact under the action of the bolt, so that the oil-gas mixture needs to pass through the two mutually contacted surfaces of the first bending part when reaching the sealing gasket during the working of the transformer, the oil-gas mixture is difficult to reach the sealing gasket, the physical and chemical properties of the sealing gasket cannot be changed due to the combination of the temperature difference change between day and night, and the sealing gasket can have a longer sealing effect.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged schematic view of a portion of fig. 1.
In the figure: the oil tank cover 1, the second round steel 2, the sealing gasket 3, the semicircular square neck bolt 4, the bolt sealing gasket 5, the flat gasket 6, the elastic gasket 7, the nut 8, the oil tank body 9, the first bending part 10, the second bending part 11 and the buckling bending part 12.
Detailed Description
As shown in fig. 1-2, the transformer tank sealing structure comprises a tank cover 1, a semicircular head square neck bolt 4, a sealing gasket 3 and a bolt sealing gasket 5; a square hole is formed in the oil tank cover 1, and the shape of the square hole corresponds to the shape of a square neck part of the semicircular head square neck bolt; the square neck part of the semicircular head square neck bolt 4 penetrates through the square hole in the oil tank cover to be connected with the oil tank cover 1; the bottom of the semicircular head square neck bolt 4 penetrates through the oil tank body 9 and is fixedly connected with the oil tank body 9 through a nut 8; the sealing gasket 3 and the bolt sealing gasket 5 are arranged between the oil tank cover 1 and the oil tank body 9; the sealing gasket 3 is a cylindrical strip, and the diameter of the section of the sealing gasket 3 is 1.2-2 times of the diameter of the section of the bolt sealing gasket 5;
the oil tank cover 1 and the oil tank body 9 are provided with a first bending part 10 which is bent upwards at one end, close to the oil tank, of the sealing gasket 3, and the first bending angle of the first bending part 10 of the oil tank body 9 is larger than that of the first bending part 10 of the oil tank cover 1.
The first bending part 10 of the oil tank body 9 is bent upwards by an angle larger than the first bending part 10 of the oil tank cover 1, so that after the connection is completed, the semicircular square neck bolt 4 is compressed into an oblong shape, the oblong shape is full of elasticity, an excellent sealing effect is achieved, meanwhile, two inclined planes are in contact until the two inclined planes are in complete contact due to the action of the bolt, and when the transformer works, an oil-gas mixture needs to pass through the two mutually contacted surfaces of the first bending part 10 when reaching the sealing gasket 3, so that the oil-gas mixture is difficult to reach the sealing gasket 3, and therefore the physical and chemical properties of the sealing gasket 3 cannot be changed due to the combination of the temperature difference between day and night, and the sealing effect of the sealing gasket 3 can be longer.
Meanwhile, the oil gas is not easy to reach the far end of the bending due to the gravity effect by bending upwards rather than downwards.
The above-mentioned tank case lid 1 and tank box 9 are equipped with second kink 11 in the bolt seal 5 one end that keeps away from the oil tank, and the two gradient of second kink 11 on tank case lid 1 and the tank box 9 are different, make half head square neck bolt 4 fastening back, the inboard two faces of second kink 11 contact each other.
In the same way, the second bending part 11 contacts with each other so that external air or steam-water mixture passes through two surfaces which are contacted with each other before contacting the bolt sealing gasket 5, and the two surfaces are tightly contacted with each other when being buckled by different angles, so that the air or steam-water mixture is difficult to enter, and the service life of the bolt sealing gasket 5 is prolonged.
The above-mentioned tank cap 1 is provided with the buckling and bending portion 12 at the end of the second bending portion 11, and the buckling and bending portion 12 buckles the second bending portion 11 on the tank body 9.
As shown in fig. 2, after the completion of the bolt fastening, the buckling and bending portion 12 is bent using a tool, so that the buckling and bending portion 12 buckles the second bending portion 11 on the tank body 9, so that the contact is tighter and rainwater is also difficult to enter.
The second bending portion 11 is bent upward.
The upward bending makes the bending operation easier.
Claims (4)
1. Transformer box seal structure, characterized by: the device comprises an oil tank cover (1), a semicircular square neck bolt (4), a sealing gasket (3) and a bolt sealing gasket (5); square holes are formed in the oil tank cover (1), and the shapes of the square holes correspond to the shapes of square neck parts of the semicircular head square neck bolts; the square neck part of the semicircular head square neck bolt (4) penetrates through the square hole on the oil tank cover to be connected with the oil tank cover (1); the bottom of the semicircular head square neck bolt (4) penetrates through the oil tank body (9) and is fixedly connected with the oil tank body (9) through a nut (8); the sealing gasket (3) and the bolt sealing gasket (5) are arranged between the oil tank cover (1) and the oil tank body (9); the sealing gasket (3) is in a cylindrical strip shape, and the diameter of the section of the sealing gasket (3) is 1.2-2 times of the diameter of the section of the bolt sealing gasket (5);
the oil tank cover (1) and the oil tank body (9) are provided with a first bending part (10) which is bent upwards at one end, close to the oil tank, of the sealing gasket (3), and the first bending angle of the first bending part (10) of the oil tank body (9) is larger than that of the first bending part (10) of the oil tank cover (1).
2. The transformer tank sealing structure according to claim 1, wherein the tank cover (1) and the tank body (9) are provided with a second bending part (11) at one end of the bolt sealing gasket (5) far away from the tank, and two inclinations of the second bending part (11) on the tank cover (1) and the tank body (9) are different, so that after the semicircular square neck bolt (4) is fastened, two surfaces on the inner side of the second bending part (11) are contacted with each other.
3. The transformer tank sealing structure according to claim 2, wherein the tank cover (1) is provided with a buckling bending part (12) at the end of the second bending part (11), and the buckling bending part (12) buckles the second bending part (11) on the tank body (9).
4. A transformer tank sealing structure according to claim 3, characterized in that the second bending part (11) is bent upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625972.4U CN219457300U (en) | 2023-03-27 | 2023-03-27 | Sealing structure of transformer box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625972.4U CN219457300U (en) | 2023-03-27 | 2023-03-27 | Sealing structure of transformer box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219457300U true CN219457300U (en) | 2023-08-01 |
Family
ID=87410328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320625972.4U Active CN219457300U (en) | 2023-03-27 | 2023-03-27 | Sealing structure of transformer box body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219457300U (en) |
-
2023
- 2023-03-27 CN CN202320625972.4U patent/CN219457300U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |