CN219933075U - Connecting structure of pressure release valve of transformer - Google Patents
Connecting structure of pressure release valve of transformer Download PDFInfo
- Publication number
- CN219933075U CN219933075U CN202320587985.7U CN202320587985U CN219933075U CN 219933075 U CN219933075 U CN 219933075U CN 202320587985 U CN202320587985 U CN 202320587985U CN 219933075 U CN219933075 U CN 219933075U
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- Prior art keywords
- flange
- axial
- pipe
- butterfly valve
- pressure relief
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- 239000002828 fuel tank Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims 5
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model provides a connection structure of transformer pressure relief valve for install the pressure relief valve to the top of fuel tank cap, including coupling, butterfly valve and I-shaped connecting pipe, the coupling is including steel pipe and flange, the steel pipe runs through the inside that the fuel tank cap set up and its one end stretched into the oil tank, the other end is located the outside of oil tank and is equipped with flange so that flange is higher than the top setting of fuel tank cap, a plurality of first axial through-holes have evenly been seted up on the flange along its circumferencial direction and have the butterfly valve through the connecting piece fastening, the pressure relief valve passes through I-shaped connecting pipe and is connected with the butterfly valve. The utility model has the advantages of low processing difficulty, strong universality of structural parts, raw material saving, manufacturing cost reduction, simple installation and convenient operation.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a connecting structure of a pressure release valve of a transformer.
Background
The oil immersed type power transformer or the oil immersed type special transformer has the possibility of internal faults in the operation process, and because the oil immersed type transformer takes transformer oil as a medium, the pressure in an oil tank can be increased when the oil immersed type transformer breaks down, the oil immersed type transformer is required to be provided with a pressure release valve on a tank cover or the oil tank so as to ensure the safe operation of the oil immersed type transformer, and the pressure release valve is also required to be conveniently detached on the premise of not influencing the sealing of the transformer oil tank so as to be convenient for on-site verification or replacement.
The lower part of the pressure release valve is provided with a switchable butterfly valve, the connection structure between the butterfly valve and the tank cover is as shown in fig. 1, the top surface and the bottom surface of the tank cover 1 are respectively welded with a welding flange 2 and a connecting pipe 3, the welding flange 2 is connected with a butterfly valve 4, and the pressure release valve 5 and the butterfly valve 4 are connected through an I-shaped connecting pipe 6. When the connecting structure is assembled, the butterfly valve 4 needs to be connected with the welding flange 2 and the I-shaped connecting pipe 6 at the same time, so that the butterfly valve 4 needs to adopt an unconventional structure as shown in fig. 2. The butterfly valve 4 is connected with the welding flange 2 by adopting 4 inner hexagon bolts of M16, and is connected with the I-shaped connecting pipe 6 by using 8 bolts of M20. In the connecting structure, the welding flange can only adopt blind hole design as shown in fig. 3 and 4, the processing is complex, the efficiency is low, and meanwhile, the thickness of the welding flange also has to meet certain requirements (less than or equal to 32 mm) to meet the requirements of mounting strength and tightness, so that the consumption of materials is large, and the production cost is high.
Disclosure of Invention
In view of the above, the present utility model aims to provide a connection structure of a pressure release valve of a transformer, which has low processing difficulty, saves raw materials, is simple to install, and can solve the problems existing in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a connection structure of transformer pressure relief valve for install the pressure relief valve to the top of fuel tank cap, including coupling, butterfly valve and I shape connecting pipe, the coupling is including steel pipe and flange, the steel pipe runs through the fuel tank cap sets up and its one end stretches into the inside of oil tank, and the other end is located the outside of oil tank and is equipped with flange so that flange is higher than the top setting of fuel tank cap, evenly seted up a plurality of first axial through-holes on the flange along its circumferencial direction and tightened through the connecting piece the butterfly valve, the pressure relief valve passes through I shape connecting pipe with the butterfly valve is connected.
Preferably, the steel pipe penetrates through the oil tank cover and is welded with the top surface and the bottom surface of the oil tank cover.
Preferably, a plurality of second axial through holes are uniformly formed in two end faces of the butterfly valve along the circumferential direction of the butterfly valve, the second axial through holes correspond to the positions of the first axial through holes, the connecting piece penetrates through the second axial through holes, one end of the connecting piece is fixedly connected with the first axial through holes on the connecting flange, and the other end of the connecting piece is fixedly connected with the I-shaped connecting pipe.
Preferably, the connecting piece is a connecting screw, the axial section of the second axial through hole is convex, a boss is radially extended on the circumferential outer side surface of the connecting screw corresponding to the inner shape of the second axial through hole, the boss on the connecting screw is embedded in the second axial through hole, one end of the boss is fixedly connected with the first axial through hole on the connecting flange through a nut, and the other end of the boss is fixedly connected with the I-shaped connecting pipe.
Preferably, the connecting flange and the steel pipe are welded and connected into an integral structure.
Preferably, an oil injection guide pipe is connected to one end of the pressure relief valve, which is not connected to the I-shaped connecting pipe.
Compared with the prior art, the connecting structure of the transformer pressure release valve has the following advantages:
1. a plurality of first axial through holes are formed in the connecting flange in a through hole design mode, so that the material thickness and the overall weight of the connecting flange are reduced, the material consumption is saved, and the processing difficulty is reduced
2. According to the connection requirement and the specific structure of the I-shaped connecting pipe and the connecting flange, the existing butterfly valve which is used in a large amount conventionally can be selected, and the universality is strong.
3. The assembly operation between the plurality of components uses fewer installation tools and is simple and quick.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art connection structure;
FIG. 2 is a schematic diagram of a prior art non-conventional butterfly valve;
FIG. 3 is a schematic view of a welded flange according to the prior art;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
fig. 5 is a schematic structural diagram of a connection structure of a pressure relief valve of a transformer according to the present utility model;
FIG. 6 is a schematic structural view of a pipe joint;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic diagram of a butterfly valve;
FIG. 9 is a cross-sectional view taken along the direction A-A in FIG. 8;
FIG. 10 is a schematic view of the structure of the connecting screw;
fig. 11 is a top view of fig. 10.
Reference numerals and description of the components referred to in the drawings:
1. a fuel tank cap; 2. welding a flange; 3. a connecting pipe; 4. butterfly valve; 5. a pressure relief valve; 6. an I-shaped connecting pipe; 7. a pipe joint; 8. a fuel injection guide tube; 9. a connecting screw;
401. a second axial through hole; 701. a steel pipe; 702. a connecting flange; 703. a first axial through hole; 901. a boss.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in the following detailed description. It will be apparent that the described embodiments are only some, but not all, 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.
Referring to fig. 5 to 11, a connection structure of a pressure relief valve of a transformer is used for installing the pressure relief valve 5 on top of a fuel tank cap 1, and comprises a pipe joint 7, a butterfly valve 4 and an i-shaped connecting pipe 6, wherein the pipe joint 7 comprises a steel pipe 701 and a connecting flange 702, the steel pipe 701 is a section, the length of the section is cut according to the requirement, and additional processing is not needed. Unlike the prior art in which the welding flange 2 is directly welded to the top of the fuel tank cap 1, in this embodiment, a steel pipe 701 is provided to penetrate the fuel tank cap 1, and one end thereof is extended into the fuel tank, and the other end thereof is positioned outside the fuel tank and welded with a connecting flange 702 thereon, so that the connecting flange 702 is provided higher than the top of the fuel tank cap 1. In order to ensure the tightness of the fuel tank and simplify the difficulty of installation operation, the position of the steel pipe 701 penetrating the fuel tank cap 1 is directly connected with the top surface and the bottom surface of the fuel tank cap 1 by adopting a welding mode.
The connecting flange 702 is uniformly provided with 8 first axial through holes 703 along the circumferential direction, and the thickness of the connecting flange 702 can be reduced to 18mm on the premise of meeting the requirements of mounting strength and tightness, and compared with the welding flange 2 in the prior art, the overall weight can be reduced by about 40%. Meanwhile, compared with the processing mode of blind holes in the prior art, the processing method of the through holes reduces the processing complexity and improves the processing efficiency.
Thereafter, the butterfly valve 4 is mounted on the connection flange 702, one end of the i-shaped connection pipe 6 is connected to the butterfly valve 4, the other end is connected to the pressure release valve 5, and at the same time, the injection guide pipe 8 is connected to the end of the pressure release valve 5 which is not connected to the i-shaped connection pipe 6.
The butterfly valve 4 needs to be connected with the connecting flange 702 and the I-shaped connecting pipe 6 at the same time, and according to the structure of the connecting flange 702, the butterfly valve 4 can be of a structure which is used in a conventional and large amount, namely, 8 second axial through holes 401 are uniformly formed in the circumferential direction of the two end faces of the butterfly valve 4, and the positions of the second axial through holes 401 and the positions of the first axial through holes 703 correspond. The connecting piece penetrates through the second axial through hole 401, one end of the connecting piece is fixedly connected with the first axial through hole 703 on the connecting flange 702, and the other end of the connecting piece is fixedly connected with the I-shaped connecting pipe 6, so that the connecting flange 702 on the pipe joint 7 and the I-shaped connecting pipe 6 are respectively fixedly connected with the butterfly valve 4.
The connecting piece is the connecting screw rod 9 of M20, and the axial cross-section of second axial through-hole 401 is convex, and the inside shape radial extension that the circumference outside face of connecting screw rod 9 corresponds second axial through-hole 401 is equipped with a boss 901, and the boss 901 on connecting screw rod 9 imbeds in the second axial through-hole 401 and its one end passes through nut fastening connection with the first axial through-hole 703 on flange 702, and the other end is connected with I-shaped connecting pipe 6 fastening. In the connecting process, compared with the existing connecting structure, the use of the M16 inner hexagon bolts is reduced, so that the mounting steps are reduced, and the mounting efficiency is improved.
When the transformer is in a normal operation state, the butterfly valve 4 is in an open state. When the transformer fails, the pressure release valve 5 is started, and transformer oil flows into the ground oil pool through the steel pipe 701, the connecting flange 702, the butterfly valve 4, the I-shaped connecting pipe 6, the pressure release valve 5 and the oil injection guide pipe 8. When the pressure release valve 5 needs to be checked or replaced on site, the butterfly valve 4 can be disassembled after being closed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A connection structure of a transformer pressure relief valve for mounting the pressure relief valve to the top of a fuel tank cap, characterized in that: the hydraulic oil tank is characterized by comprising a pipe joint, a butterfly valve and an I-shaped connecting pipe, wherein the pipe joint comprises a steel pipe and a connecting flange, the steel pipe penetrates through the oil tank cover, one end of the steel pipe extends into the oil tank, the other end of the steel pipe is located outside the oil tank and provided with the connecting flange so that the connecting flange is higher than the top of the oil tank cover, a plurality of first axial through holes are uniformly formed in the connecting flange along the circumferential direction of the connecting flange and are fastened with the butterfly valve through connecting pieces, the pressure release valve is connected with the butterfly valve through the I-shaped connecting pipe, a plurality of second axial through holes are uniformly formed in the two end surfaces of the butterfly valve along the circumferential direction of the butterfly valve, the connecting pieces penetrate through the second axial through holes, one end of the connecting piece is fixedly connected with the first axial through holes in the connecting flange, the other end of the connecting piece is fixedly connected with the I-shaped connecting pipe, the circumferential outer side surface of the connecting piece is provided with a boss corresponding to the inner shape of the second axial through holes, and the boss is fixedly connected with the connecting piece is embedded into the first axial through hole.
2. The connection structure of a pressure relief valve for a transformer according to claim 1, wherein: and the position of the steel pipe penetrating through the fuel tank cover is welded with the top surface and the bottom surface of the fuel tank cover.
3. The connection structure of a pressure relief valve for a transformer according to claim 1, wherein: the connecting flange and the steel pipe are welded and connected into an integrated structure.
4. The connection structure of a pressure relief valve for a transformer according to claim 1, wherein: and one end of the pressure release valve, which is not connected with the I-shaped connecting pipe, is connected with an oil injection guide pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587985.7U CN219933075U (en) | 2023-03-23 | 2023-03-23 | Connecting structure of pressure release valve of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587985.7U CN219933075U (en) | 2023-03-23 | 2023-03-23 | Connecting structure of pressure release valve of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933075U true CN219933075U (en) | 2023-10-31 |
Family
ID=88489045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320587985.7U Active CN219933075U (en) | 2023-03-23 | 2023-03-23 | Connecting structure of pressure release valve of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933075U (en) |
-
2023
- 2023-03-23 CN CN202320587985.7U patent/CN219933075U/en active Active
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| GR01 | Patent grant |