CN219932941U - Oil tank subsea valve of transformer and transformer tank - Google Patents
Oil tank subsea valve of transformer and transformer tank Download PDFInfo
- Publication number
- CN219932941U CN219932941U CN202321289180.0U CN202321289180U CN219932941U CN 219932941 U CN219932941 U CN 219932941U CN 202321289180 U CN202321289180 U CN 202321289180U CN 219932941 U CN219932941 U CN 219932941U
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- valve
- sealing gasket
- sealing
- plug
- valve seat
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- 238000007789 sealing Methods 0.000 claims abstract description 117
- 230000007704 transition Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 230000032683 aging Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model provides a transformer tank valve at sea, includes the disk seat that has the internal screw thread, screw-thread fit stretches into the valve plug in the disk seat, with the sealed pad between valve plug and the disk seat, the sealed cover that fills up is on the valve plug and by the valve plug compress tightly on disk seat terminal surface, its characterized in that: a sealing cavity is formed between the valve plug and the valve seat, and the sealing gasket is sealed in the sealing cavity. According to the utility model, the sealing gasket is sealed by the sealing cavity, the sealing gasket is isolated from the external environment, the sealing gasket is protected by the sealing cavity, the fatigue aging of the sealing gasket caused by the external environment is avoided, the fatigue life of the sealing gasket is prolonged, the sealing reliability of the oil tank subsea valve is improved, the sealing cavity is formed between the valve seat and the valve plug by improving the structure of the valve seat, the structure is simple, the improvement cost is low, and the practicability is high. The utility model further provides a transformer oil tank.
Description
Technical Field
The utility model relates to a subsea valve of a transformer oil tank, which is arranged at the bottom of the transformer oil tank.
Background
The oil tank subsea valve of the distribution transformer at present generally refers to an oil drain pipe with internal threads welded at the oil drain hole position of the tank bottom, a screw plug is assembled on the oil drain pipe, a rubber pad is sleeved on the screw plug, the rubber pad is pressed on the end face of the oil drain pipe after screwing, the rubber pad is exposed to enable fatigue aging to occur after the transformer is used for a period of time, cracks with different degrees are formed, sealing reliability is reduced, oil leakage is caused, and the subsea valve is not easy to find when the oil leakage occurs because the subsea valve is installed at the bottom of the oil tank, and can only supplement oil after the liquid level in the oil tank is reduced through a liquid level meter on the oil tank. The rubber pad is needed to be replaced when the transformer is powered off to open the subsea valve, the operation is relatively troublesome, and the sealing reliability is improved by replacing the subsea valve with other structures, so that the cost is increased.
Disclosure of Invention
The sealing gasket in the oil tank subsea valve is sealed by the sealing cavity, the sealing gasket is isolated from the external environment, the sealing gasket is protected by the sealing cavity, the fatigue aging of the sealing gasket caused by the external environment is avoided, the fatigue life of the sealing gasket is prolonged, the sealing reliability of the oil tank subsea valve is improved, the sealing cavity is formed between the valve seat and the valve plug by improving the structure of the valve seat, the structure is simple, the improvement cost is low, and the practicability is high. The utility model further provides a transformer oil tank.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a transformer tank valve at sea, includes the disk seat that has the internal screw thread, screw-thread fit stretches into the valve plug in the disk seat, with the sealed pad between valve plug and the disk seat, the sealed cover that fills up is on the valve plug and by the valve plug compress tightly on disk seat terminal surface, its characterized in that: a sealing cavity is formed between the valve plug and the valve seat, and the sealing gasket is sealed in the sealing cavity.
Preferably, the valve plug comprises a head part and a plug part which is coaxial with the head part and integrally formed, the plug part is in threaded fit with and extends into the valve seat, the sealing gasket is sleeved on the plug part, the head part compresses the sealing gasket on the end face of the valve seat, and a sealing cavity is formed between the inner end face of the head part and the end face of the valve seat.
Preferably, the head comprises a hexagonal head matched with a wrench and a cover plate which is coaxial with the hexagonal head and integrally formed, the plug screw part is arranged on the inner side of the cover plate, the outer edge of the cover plate is a cover plate annular edge protruding outwards, a cover plate groove is formed on the inner end face of the cover plate, the end face of the valve seat is provided with a valve seat annular edge matched with the cover plate annular edge, a valve seat groove is formed on the end face of the valve seat, and the valve seat annular edge stretches into the cover plate groove and is in transition fit with the cover plate annular edge to seal the valve seat groove to form a sealing cavity.
Preferably, the plug screw part comprises an externally threaded thread section and a positioning section with the outer diameter smaller than that of the thread section, the positioning section is integrally formed between the cover plate and the thread section, and the sealing gasket is sleeved on the positioning section and abuts against the end face of the thread section.
Preferably, the thickness of the sealing gasket is larger than the axial thickness of the positioning section, the end face of the sealing gasket is provided with a right-angle inward concave edge matched with the end face of the thread section, the outer diameter of the sealing gasket is smaller than the inner diameter of the cover plate groove, an annular gap is formed between the sealing gasket and the cover plate annular edge, and the valve seat annular edge extends into the annular gap.
Preferably, the depth of the cover plate groove and the depth of the valve seat groove are smaller than the thickness of the sealing gasket, and the sealing gasket is compressed by the cover plate and is compressed in the sealing cavity.
Transformer tank, its characterized in that: the bottom of the transformer oil tank is provided with the above-mentioned sea valve of the transformer oil tank.
The beneficial effects of the utility model are as follows:
the oil tank subsea valve comprises a valve seat, a valve plug and a sealing gasket, wherein a sealing cavity is formed between the valve seat and the valve plug, the sealing gasket is pressed on the end face of the valve seat by the valve plug and is sealed by the sealing cavity, the sealing gasket is isolated from the external environment, the sealing gasket is sealed and protected by the sealing cavity, the fatigue aging of the sealing gasket caused by the external environment is avoided, the fatigue life of the sealing gasket is prolonged, the sealing reliability of the oil tank subsea valve is improved, the sealing cavity is formed between the valve seat and the valve plug by improving the structure of the valve seat, the structure is simple, the improvement cost is low, and the practicability is high.
The sealing cavity is matched with the annular edge of the cover plate through the annular edge of the valve seat to form double-layer sealing, rainwater and dust can be effectively prevented from entering the sealing cavity, the sealing gasket is effectively sealed and protected, the sealing gasket caused by environmental changes is prevented from being aged in an accelerated manner, the fatigue life of the sealing gasket is prolonged, the sealing gasket is aged in a fatigue manner after being used for a long time, and the sealing cavity can be matched with the sealing gasket to effectively reduce oil leakage of an oil drain hole at the bottom of the oil tank.
Drawings
FIG. 1 is a schematic diagram of a subsea valve for a transformer tank in an embodiment.
FIG. 2 is a schematic diagram of a valve seat and valve plug combination.
FIG. 3 is a schematic illustration of a gasket being fitted over a valve plug.
FIG. 4 is a schematic diagram of a valve plug.
Fig. 5 is a schematic view of a valve seat.
Fig. 6 is a schematic view of a gasket.
Fig. 7 is a schematic diagram of a transformer tank of the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below with reference to fig. 1 to 7.
The utility model provides a transformer tank subsea valve, includes valve holder 1, the screw-thread that have the internal thread stretches into the valve plug 2 in the valve holder 1, with the sealed 3 that fills up between valve plug 2 and valve holder 1, the sealed 3 cover of filling up is on valve plug 2 and by valve plug 2 compress tightly on valve holder 1 terminal surface, its characterized in that: a seal cavity 4 is formed between the valve plug 2 and the valve seat 1, and the seal gasket 3 is sealed in the seal cavity 4.
Above transformer tank subsea valve, including disk seat 1, valve plug 2 and sealed pad 3, form sealed chamber 4 between disk seat 1 and valve plug 2, sealed 3 valve plug 2 compresses tightly on disk seat 1 terminal surface and sealed by sealed chamber 4, with sealed pad 4 and external environment isolation, form sealed protection to sealed pad 3 with sealed chamber 4, avoid the sealed pad fatigue ageing that causes because of external environment and chap, prolong the fatigue life of sealed pad 3, thereby promote the sealing reliability of oil tank subsea valve, improve disk seat 1 and the structure of valve plug 2 and form sealed chamber 4 between the two, and is simple in structure, the improvement is with low costs, the practicality is high.
The valve plug 2 comprises a head part 5 and a plug part 6 which is coaxially integrated with the head part 5, the plug part 6 is in threaded fit and extends into the valve seat 1, the sealing gasket 3 is sleeved on the plug part 6, the head part 5 compresses the sealing gasket 3 on the end face of the valve seat 1, and a sealing cavity 4 is formed between the inner end face of the head part 5 and the end face of the valve seat 1. The screw plug part 6 is screwed into the valve seat 1 by screwing the head part 5, and meanwhile, the sealing gasket 3 is pressed on the end face of the valve seat 1 and matched with the end face of the valve seat 1 to form a sealing cavity 4 to seal the sealing gasket 3.
The head 5 consists of a hexagonal head 7 matched with a wrench and a cover plate 8 which is coaxial with the hexagonal head 7 and integrally formed, the plug screw part 6 is arranged on the inner side of the cover plate 8, the outer edge of the cover plate 8 is a cover plate annular edge 81 protruding outwards, a cover plate groove 82 is formed on the inner end surface of the cover plate 8, the end surface of the valve seat 1 is provided with a valve seat annular edge 11 matched with the cover plate annular edge 81, a valve seat groove 12 is formed on the end surface of the valve seat 1, and the valve seat annular edge 11 extends into the cover plate groove 82 and is in transition fit with the cover plate annular edge 81 to seal the valve seat groove 12 to form a sealing cavity 4. It can be seen from the drawings that the cover plate 8 is integrally formed between the plug screw part 6 and the hexagon head 7, and the outer diameter of the cover plate 8 is larger than the outer diameter of the hexagon head 7, the cover plate annular edge 81 integrally formed on the outer edge of the cover plate 8 enables the cover plate groove 82 recessed inwards to be formed on the inner end face of the cover plate 8, the sealing gasket sleeve 3 is sleeved on the plug screw part 6 and is attached to the bottom wall of the cover plate groove 82, the valve seat annular edge 11 is integrally formed on the end face edge of the valve seat 1, the valve seat annular edge 11 also forms the valve seat groove 12 recessed inwards on the end face of the valve seat 1, the plug screw part 6 is screwed into the valve seat annular edge 11 in the valve seat, the cover plate 8 covers the end face of the valve seat 1, the plug screw part 6 is screwed into place when the valve seat annular edge 11 contacts with the bottom wall of the cover plate groove 82, the cover plate groove 12 seals the valve seat groove 12 to form a sealing cavity 4, the sealing gasket 3 is sealed in the sealing cavity 4, the sealing cavity 4 is matched with the cover plate annular edge 81 through the valve seat annular edge 11 to form a double-layer seal, dust can effectively prevent from entering the sealing cavity 4, the sealing gasket 3 forms an effective protection seal, the sealing gasket 3 can also extend the environment, the sealing gasket 3, the oil leakage fatigue life can be effectively prolonged, the sealing gasket 3 can be prevented from being aged, and the sealing oil tank can be aged, and the sealing fatigue life can be effectively kept, even if the sealing gasket 3 is prolonged, and the sealing fatigue life is prolonged, and the sealing life is kept.
The plug screw part 6 consists of a threaded section 61 with external threads and a positioning section 62 with the outer diameter smaller than that of the threaded section 61, the positioning section 62 is integrally formed between the cover plate 8 and the threaded section 61, and the sealing gasket 3 is sleeved on the positioning section 62 and abuts against the end face of the threaded section 61. The sealing gasket 3 is axially positioned on the positioning section 62, and the sealing gasket 3 can be synchronously separated from the end surface of the valve seat 1 along with the unscrewing of the threaded section 61, so that the condition that the sealing gasket 3 cannot be separated from the end surface of the valve seat 1 due to the adhesion between the sealing gasket 3 and the end surface of the valve seat 1 after long-time use is avoided.
Wherein, the thickness of the sealing gasket 3 is larger than the axial thickness of the positioning section 62, the end surface of the sealing gasket 3 is provided with a right-angle concave edge 31 matched with the end surface of the thread section 61, the outer diameter of the sealing gasket 31 is smaller than the inner diameter of the cover plate groove 82, an annular gap 83 is formed between the sealing gasket 8 and the cover plate annular edge 81, and the valve seat annular edge 11 extends into the annular gap 83. The annular gap 83 allows the valve seat ring 11 to extend smoothly into the cover plate recess 82 when the valve plug 2 is screwed into the valve seat 1.
Wherein, the depth of the cover plate groove 82 and the valve seat groove 12 is smaller than the thickness of the sealing gasket 3, and the sealing gasket is pressed by the cover plate 8 and compressed in the sealing cavity 4. The thickness of the sealing gasket 3 is larger, when the valve plug 2 is screwed, the sealing gasket 3 can be pressed on the end face of the valve seat 1 by the cover plate 8, and the sealing gasket is compressed in the sealing cavity 4, so that the sealing gasket has a certain compression amount, is reliable in sealing and has a certain precompression on to the cover plate 8, and the valve plug 2 is prevented from being loosened.
The utility model also provides a transformer oil tank, which is characterized in that: the bottom of the transformer tank is provided with the above-described transformer tank subsea valve 100. The sealing reliability of the oil tank subsea valve 100 of the transformer oil tank is higher, the sealing life is longer, oil leakage of the oil tank caused by unreliable sealing of the subsea valve can be effectively reduced, and the sealing reliability of the transformer oil tank is improved.
The foregoing disclosure of embodiments of the present utility model has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (7)
1. The utility model provides a transformer tank valve at sea, includes the disk seat that has the internal screw thread, screw-thread fit stretches into the valve plug in the disk seat, with the sealed pad between valve plug and the disk seat, the sealed cover that fills up is on the valve plug and by the valve plug compress tightly on disk seat terminal surface, its characterized in that: a sealing cavity is formed between the valve plug and the valve seat, and the sealing gasket is sealed in the sealing cavity.
2. The transformer tank subsea valve of claim 1, characterized in that: the valve plug comprises a head and a plug screw part which is coaxial with the head and integrally formed, the plug screw part is in threaded fit with and stretches into the valve seat, the sealing gasket is sleeved on the plug screw part, the head compresses the sealing gasket on the end face of the valve seat, and a sealing cavity is formed between the inner end face of the head and the end face of the valve seat.
3. The transformer tank subsea valve of claim 2, characterized by: the head constitute by hexagonal head that can match with the spanner and with the apron of the coaxial integrated into one piece of hexagonal head, plug screw portion sets up in the apron inboard, the outward flange of apron is outside convex apron ring limit, forms the apron recess on the interior terminal surface of apron, the terminal surface of disk seat have with apron ring limit complex valve seat ring limit, form the disk seat recess on the terminal surface of disk seat, the valve seat ring limit stretches into in the apron recess and with apron ring limit transition fit with the sealed chamber that forms of disk seat recess.
4. A transformer tank subsea valve according to claim 3, characterized in that: the screw plug part consists of a threaded section with external threads and a positioning section with the outer diameter smaller than that of the threaded section, the positioning section is integrally formed between the cover plate and the threaded section, and the sealing gasket is sleeved on the positioning section and abuts against the end face of the threaded section.
5. The transformer tank subsea valve of claim 4, characterized by: the thickness of the sealing gasket is larger than the axial thickness of the positioning section, the end face of the sealing gasket is provided with a right-angle inward concave edge matched with the end face of the threaded section, the outer diameter of the sealing gasket is smaller than the inner diameter of the cover plate groove, an annular gap is formed between the sealing gasket and the annular edge of the cover plate, and the annular edge of the valve seat extends into the annular gap.
6. The transformer tank subsea valve of claim 5, characterized by: the depth of the cover plate groove and the depth of the valve seat groove are smaller than the thickness of the sealing gasket, and the sealing gasket is compressed by the cover plate and is compressed in the sealing cavity.
7. Transformer tank, its characterized in that: a bottom of a transformer tank is provided with a subsea valve of a transformer tank according to any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289180.0U CN219932941U (en) | 2023-05-25 | 2023-05-25 | Oil tank subsea valve of transformer and transformer tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289180.0U CN219932941U (en) | 2023-05-25 | 2023-05-25 | Oil tank subsea valve of transformer and transformer tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932941U true CN219932941U (en) | 2023-10-31 |
Family
ID=88501790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321289180.0U Active CN219932941U (en) | 2023-05-25 | 2023-05-25 | Oil tank subsea valve of transformer and transformer tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932941U (en) |
-
2023
- 2023-05-25 CN CN202321289180.0U patent/CN219932941U/en active Active
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| GR01 | Patent grant |