CN115376789A - Oil-immersed power equipment top cover and oil-immersed power equipment - Google Patents
Oil-immersed power equipment top cover and oil-immersed power equipment Download PDFInfo
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- CN115376789A CN115376789A CN202210857695.XA CN202210857695A CN115376789A CN 115376789 A CN115376789 A CN 115376789A CN 202210857695 A CN202210857695 A CN 202210857695A CN 115376789 A CN115376789 A CN 115376789A
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- 230000003578 releasing effect Effects 0.000 claims abstract description 44
- 230000005484 gravity Effects 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 210000001503 joint Anatomy 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 description 9
- 239000006260 foam Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention provides a top cover of oil-immersed power equipment and the oil-immersed power equipment, comprising: the energy absorption and pressure relief layer is connected with the first cover plate; the bottom of the first cover plate is used for being connected with the oil tank body, the energy-absorbing pressure-releasing layer is arranged above the first cover plate and is mutually attached to the first cover plate, and a plurality of porous structural members are arranged in the energy-absorbing pressure-releasing layer and are used for generating compression deformation to absorb energy when receiving the pressure impact effect in the oil tank body transmitted by the first cover plate, so that a pressure-releasing channel is formed between the first cover plate and a connecting piece at the top of the oil tank body; the top of the energy-absorbing pressure-releasing layer is used for being connected with an external part so as to move downwards under the action of gravity of the external part after pressure releasing is finished, so that the first cover plate contacts and seals the oil tank body again. The invention can effectively protect the oil tank and the internal mechanical and electronic equipment thereof, has higher energy level arc fault tolerance and can more effectively protect oil-immersed power equipment.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a top cover of oil-immersed power equipment and the oil-immersed power equipment.
Background
Oil-filled power equipment meets the insulation requirements through insulating oil, however, as the insulating properties of the insulating oil decrease, low resistance faults can cause arc discharge. Therefore, the insulating oil is vaporized and cracked, a large amount of high-temperature and high-pressure oil gas is quickly generated, and pressure waves are excited. As the pressure wave is transmitted and reflected within the tank, the pressure within the tank increases dramatically, destroying the electrical equipment and the tank. The oil tank top cap is the weak link of oil tank, and it breaks and will lead to high temperature high pressure oil gas uncontrollable to reveal, causes the explosion danger of burning, the huge damage of making simultaneously to environment and personnel.
The existing oil-immersed power equipment oil tank can not be designed and manufactured according to a pressure container and an arc fault overpressure value, so that the outer wall of the oil tank is very thick and heavy, the whole volume and weight of the oil tank are greatly increased, and the manufacturing cost of the oil tank is greatly improved. Meanwhile, the strength of the oil tank is too high, and when an arc fault occurs, the pressure in the oil tank is rapidly increased, so that each electric device in the oil tank is seriously damaged. A preset weak point is arranged on the edge of a top cover of a part of conventional oil tanks, and when an electric arc fault occurs in the oil tank to cause overpressure pressure impact, the weak point breaks and opens a discharge channel to discharge high-pressure oil gas in the oil tank. After the weak point is damaged, the oil in the oil tank is directly communicated with the outside, the oil tank cannot be sealed, and the potential safety hazard still exists.
Disclosure of Invention
In view of the above, the invention provides a top cover of an oil-immersed power device and the oil-immersed power device, and aims to solve the problem that the existing top cover of the oil-immersed power device cannot seal the oil-immersed power device after pressure relief, so that the device has a large potential safety hazard.
The invention provides a top cover of oil-immersed power equipment, which comprises: the energy absorption and pressure relief layer is connected with the first cover plate; wherein,
the bottom of the first cover plate is used for being connected with the equipment body, the energy-absorbing and pressure-releasing layer is arranged above the first cover plate and is mutually attached, and a porous structural member is arranged in the energy-absorbing and pressure-releasing layer and is used for generating compression deformation to absorb energy when receiving the pressure impact effect in the equipment body transmitted by the first cover plate, so that a pressure-releasing channel is formed between the first cover plate and a connecting piece at the top of the equipment body;
the top of the energy-absorbing pressure-releasing layer is used for being connected with an external part so as to move downwards under the action of gravity of the external part after pressure releasing is finished, and the first cover plate is made to contact and seal the equipment body again.
Further, in the oil-immersed power equipment top cover, the energy absorption and pressure release layers are multilayer.
Furthermore, in the oil-immersed power equipment top cover, a partition plate is arranged between any two adjacent energy absorption and pressure release layers.
Furthermore, in the oil-immersed power equipment top cover, the porosity of the porous structural member in each energy absorption and pressure release layer gradually decreases from the lower layer to the upper layer.
Further, in the oil-immersed power equipment top cover, the porous structural member is made of foam metal.
Further, in the oil-immersed power equipment top cover, the foam metal is foam aluminum or foam steel.
Further, in the oil-immersed power equipment top cover, the shape of the porous structural member is matched with the shape of the first cover plate.
Further, in the oil-immersed power equipment top cover, the porous structural member includes: the first arc piece and the second arc piece are spliced with each other; wherein,
two ends of the first arc piece are respectively provided with a first butt joint part, two ends of the second arc piece are correspondingly provided with a second butt joint part, and the first butt joint part and the second butt joint part are of step-shaped structures matched for use so as to realize the connection of the first arc piece and the second arc piece.
Further, among the above-mentioned oily formula power equipment top cap, still include: a second cover plate; wherein,
the second cover plate is arranged above the energy-absorbing and pressure-releasing layer, and the top of the second cover plate is used for being connected with an external part so as to move downwards under the action of gravity of the external part after pressure releasing is finished, so that the first cover plate contacts and seals the equipment body again.
Further, in the oil-immersed power equipment top cover, the first cover plate, the energy-absorbing and pressure-releasing layers and the second cover plate are connected through bolts.
Furthermore, in the oil-immersed power equipment top cover, the strength of the energy absorption and pressure release layer is higher than the gravity of the external parts and is smaller than the impact pressure in the equipment body.
Further, in the oil-filled power equipment top cover, the strength of the second cover plate is greater than that of the first cover plate.
According to the oil-immersed power equipment top cover, the energy-absorbing pressure relief layer is arranged on the first cover plate, so that when an arc fault occurs in the equipment body, impact load transmitted by the first cover plate is received and the first cover plate is compressed and deformed, the first cover plate is separated from the connecting piece of the equipment body, the pressure relief channel is formed between the first cover plate and the connecting piece, high-temperature and high-pressure oil gas caused by discharge arc discharge is relieved, energy released by short-circuit arc is absorbed through the energy-absorbing pressure relief layer, the structural reliability of the power equipment is improved, the first cover plate can move downwards under the action of gravity of external parts after relief is finished, the equipment body is sealed again, the equipment and internal mechanical and electronic equipment of the equipment can be effectively protected, compared with the existing oil-immersed power equipment, the oil-immersed power equipment has arc fault tolerance with a higher energy level, and various serious consequences caused by top cover breakage and uncontrollable high-pressure oil injection are avoided.
The invention also provides an oil-immersed power device, comprising: the oil-immersed power equipment comprises an equipment body and the top cover of the oil-immersed power equipment; wherein,
the top opening of equipment body, the top cap lid is located the top opening part of equipment body, and the two links to each other through the connecting piece.
The oil-immersed power equipment adopts the top cover provided with the energy absorption and pressure relief layer, so that the energy released by short-circuit electric arc can be absorbed, high-temperature and high-pressure oil gas caused by discharge arc discharge can be discharged, and the safety performance of the equipment is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a partial cross-sectional view of a top cover of an oil-immersed power device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a porous structural member in a top cover of an oil-immersed power device according to an embodiment of the present invention;
fig. 3 is a schematic view of an installation structure of a porous structural member in a top cover of an oil-immersed power device according to an embodiment of the present invention;
fig. 4 is a partial cross-sectional view of a top cover of an oil-filled power device according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a top cover of the oil-immersed power equipment provided in the embodiment of the present invention when an arc fault occurs in an equipment body;
fig. 6 is a schematic structural diagram of a top cover of an oil-immersed power device provided in an embodiment of the present invention when an arc fault in a device body is completed.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, an oil-immersed power device top cover according to a first embodiment of the present invention includes: the energy absorption and pressure relief layer 2 is connected with the first cover plate 1; the bottom of the first cover plate 1 is used for being connected with an equipment body, the energy-absorbing and pressure-releasing layer 2 is arranged above the first cover plate 1 and is attached to the first cover plate 1, and a porous structural member 21 is arranged in the energy-absorbing and pressure-releasing layer 2 and is used for generating compression deformation to absorb energy when receiving the pressure impact effect in the equipment body transmitted by the first cover plate 1, so that a pressure-releasing channel is formed between the first cover plate 1 and a connecting piece at the top of the equipment body; the top of the energy-absorbing and pressure-releasing layer 2 is used for being connected with an external part 3 so as to move downwards under the action of gravity of the external part 3 after pressure releasing is finished, so that the first cover plate 1 contacts and seals the equipment body again.
Specifically, the first cover plate 1 may be a circular or square steel plate, the connecting member at the top of the apparatus body may be a connecting flange 7, the first cover plate 1 seals the apparatus body through the connecting flange 7, and the middle part of the lower surface of the first cover plate 1 is in contact with the oil 4 in the apparatus body. First apron 1 steel sheet intensity is lower, in order when this internal electric arc trouble of equipment, rebound under the effect of pressure wave, break away from the equipment body, and form the pressure release passageway between flange 7, in order to reduce this internal pressure of equipment, transmit impact load to energy-absorbing pressure release layer 2 simultaneously, because first apron 1 top is connected with outside spare part 3, after this internal pressure release of equipment finishes, first apron 1 can move down again under the action of gravity of outside spare part 3, and contact once more with the equipment body, realize the sealing to the equipment body. In this embodiment, the deformation of the first cover plate 1 mainly occurs at the position directly contacting with the transformer oil and the pressure, and the deformation of the sealing position where the first cover plate 1 contacts with the bolt is very small, so that the sealing of the equipment can be ensured after the pressure relief is finished.
The device body in this embodiment may be any oil-immersed power device with a top cover, for example, an oil-immersed transformer tank body.
In a specific embodiment of this embodiment, the contact surfaces of the first cover plate 1 and the energy-absorbing pressure-relief layer 2 may be glued or welded into a whole. Preferably, the energy-absorbing and pressure-releasing layer 2 is clamped between the first cover plate 1 and the external part 3, and the first cover plate 1 and the external part 3 are connected through bolts, so that further fixed connection between each other is realized. The energy-absorbing and pressure-releasing layer 2 may be one or more layers, and when the energy-absorbing and pressure-releasing layer 2 is a plurality of layers, each layer may include a plurality of porous structural members 21, in an embodiment, each porous structural member 21 is sequentially arranged in parallel in the same layer between the substrate of the outer component 3 and the first cover plate 1, the porous structural members 21 in two adjacent layers are stacked together, and each porous structural member 21 may be stacked in an aligned manner or in a staggered manner, which is not limited in this embodiment; when the porous structural member 21 is an annular structure in another embodiment, the plurality of porous structures 21 may also be arranged in the same plane in a manner that the porous structures with different diameters are mutually sleeved, that is, the porous structural member 21 with a smaller diameter is sleeved in the porous structural member 21 with a larger diameter and is arranged in the same layer in a concentric circle manner; the porous structural members 21 in two adjacent layers are stacked on each other, and the porous structural members 21 in each layer may be stacked in alignment or in a staggered manner, which is not limited in this embodiment.
The porous structural member 21 is made of foam metal; preferably, the foam metal is foamed aluminum or foamed steel; more preferably, the porous structural member 21 is made of high-porosity closed-cell foamed aluminum, and has lower compressive strength and a longer plastic deformation platform, so that the pressure impact effect in the device body can be better buffered. The porous structure 21 may have a ring structure.
The strength of energy-absorbing pressure release layer 2 is higher than the gravity of outside spare part 3, is less than this internal impact pressure of equipment to overcome the gravity of outside spare part 3, through self this internal impact energy of deformation absorption equipment, reduce the impact load that the bolt received, and then make the base plate of outside spare part 3 warp greatly and reduce under the exogenic action, promote equipment structure reliability, also promoted the holistic antiknock performance of equipment greatly.
The outer part 3 in this embodiment may be a raised seat or a sleeve part. The top cover can be suitable for various oil-immersed power equipment, such as an oil-immersed transformer oil tank.
The above-mentioned obviously can derive, the oil-immersed power equipment top cap that provides in this embodiment, through set up energy-absorbing pressure release layer on first apron, in order when the electric arc trouble takes place in the equipment body, receive the impact load of first apron transmission and compressive deformation, make first apron break away from the connecting piece of equipment body, form the pressure release passageway between the two, in order to let out the high temperature high pressure oil gas that the electric arc discharge caused, and absorb the energy that short circuit arc released through energy-absorbing pressure release layer, promote equipment structure reliability, and can make first apron move down under the action of gravity of external spare part after the completion of releasing, the equipment body is sealed once more, can effectively protect equipment and inside mechanical and electronic equipment thereof, compared with current oil-immersed power equipment, possess the arc fault tolerance of higher energy level, and be favorable to avoiding because the top cap breaks and various serious consequences that uncontrollable high pressure fluid sprays and bring.
In the above embodiment, the energy-absorbing pressure-releasing layer 2 is a multilayer to improve the overall pressure-releasing effect.
Preferably, a partition plate is arranged between any two adjacent energy-absorbing and pressure-releasing layers 2. The partition plate may be a metal flat plate having a shape matching the porous structural member 21, and is disposed between two adjacent layers of porous structural members 21, so that the porous structural members 21 are uniformly stressed, and impact pressure is favorably buffered layer by layer.
Further, the porosity of the porous structural member 21 in each of the energy-absorbing and pressure-releasing layers 2 gradually decreases from the lower layer to the upper layer. The porosity successive layer reduces, and the intensity successive layer that corresponds increases, can effectively reduce outside spare part 3's deformation degree, greatly promotes the whole antiknock ability of equipment.
Preferably, the porosity of the porous structure 21 in each energy-absorbing and pressure-releasing layer 2 is kept consistent, so as to prevent local stress concentration from affecting the pressure buffering effect.
Example 2
In this embodiment, the shape of the porous structural member 21 is adapted to the shape of the first cover plate 1.
Specifically, the porous structure 21 may have a circular or square structure.
Example 3
Referring to fig. 2 to 3, in the present embodiment, the porous structural member 21 includes: the first arc piece 211 and the second arc piece 212 are spliced; two ends of the first arc piece 211 are respectively provided with a first butt joint portion a, two ends of the second arc piece 212 are correspondingly provided with a second butt joint portion b, and the first butt joint portion and the second butt joint portion are both of a step-shaped structure matched with each other for use, so that the first arc piece 211 is connected with the second arc piece 212.
Specifically, the first arc member 211 and the second arc member 212 may have the same structure, and both may have a semi-arc structure. The first arc piece 211 and the second arc piece 212 are correspondingly provided with a plurality of connecting holes c to realize the stable connection of the porous structure 2 and the first cover plate 1 and the external part 3 or the second cover plate 6 on the top through a plurality of bolts 5. First butt joint portion and second butt joint portion can be the assorted step portion, set porous structure spare 21 to the form of two circular arc spare docks to in processing and installation and dismantlement, be favorable to improving production efficiency.
Example 4
Referring to fig. 4 to 6, in the above embodiments, the method may further include: a second cover plate 6; the second cover plate 6 is arranged above the energy-absorbing and pressure-releasing layer 2, and the top of the second cover plate 6 is used for being connected with an external part 3 so as to move downwards under the action of gravity of the external part 3 after pressure releasing is finished, so that the first cover plate 1 contacts and seals the equipment body again.
That is, in another embodiment of the present invention: the bottom of the first cover plate 1 is used for being connected with the equipment body, the energy-absorbing and pressure-releasing layer 2 is arranged between the first cover plate 1 and the second cover plate 6 and is respectively attached to the first cover plate 1 and the second cover plate 6, and a plurality of porous structural members 21 are arranged in the energy-absorbing and pressure-releasing layer 2 and used for generating compression deformation to absorb energy when receiving pressure impact action in the equipment body transmitted by the first cover plate 1 and enabling a pressure-releasing channel to be formed between the first cover plate 1 and a connecting piece at the top of the equipment body; the top of the second cover plate 6 is used for being connected with an external part 3, so that after pressure relief is finished, the second cover plate moves downwards under the action of gravity of the external part 3, and the first cover plate 1 is enabled to contact and seal the equipment body again.
The first cover plate 1, the energy-absorbing and pressure-releasing layers 2 and the second cover plate 6 are connected through bolts 5 and fastened through nuts 8. In this embodiment, the second cover plate 6 may be identical to the first cover plate 1 in shape, for example, both are square or round steel plates.
Preferably, the strength of the second cover plate 6 is greater than that of the first cover plate 1, and the deformation is small when the impact force is applied, so that the antiknock capability of the equipment can be effectively improved.
For the structure, reference may be made to the above embodiments, which are not described herein again. For example, the porous structure 21 may be plural, and each porous structure 21 may be uniformly distributed between the first cover plate 1 and the second cover plate 6 to uniformly disperse and absorb the pressure impact transmitted from the first cover plate 1 to the inside of the apparatus body.
With continued reference to fig. 5-6, the operation of the embodiment of the present invention is as follows:
as shown in fig. 5, when an arc fault occurs in the equipment body, the pressure wave pushes the first cover plate 1 to move upwards and extrude the energy-absorbing pressure-relief layer 2, the first cover plate 1 is separated from the connecting flange 7 to form a pressure-relief channel, high-pressure oil gas in the oil tank is released, and the internal pressure of the oil tank is reduced. The porous structural member 21 absorbs pressure shock in a cushioning manner, and reduces the impact load on the connecting bolt.
As shown in fig. 6, after the arc fault voltage relief is finished, the second cover plate 6 moves downwards under the gravity and self-weight of the external component 3 above the second cover plate, and the first cover plate 1 and the connecting flange 7 contact again to seal the device.
It can be seen from the above that, according to the oil-immersed power equipment top cover provided by the invention, the energy-absorbing pressure-relief layer is arranged between the first cover plate and the second cover plate, so that when an arc fault occurs in the equipment body, the impact load transmitted by the first cover plate is received and is compressed and deformed, the first cover plate is separated from the connecting piece of the equipment body, and a pressure-relief channel is formed between the first cover plate and the second cover plate, so that high-temperature and high-pressure oil gas caused by arc discharge is relieved, the energy released by short-circuit arc is absorbed by the energy-absorbing pressure-relief layer, the structural reliability of the oil tank is improved, the second cover plate can move downwards under the action of the gravity of external parts after the relief is finished, the equipment body is sealed again, the oil tank and internal mechanical and electronic equipment thereof can be effectively protected, compared with the existing oil-immersed power equipment oil tank, the oil-immersed power equipment top cover has higher energy level arc fault tolerance, the oil-immersed power equipment can be more effectively protected, and various serious consequences caused by the rupture of uncontrollable high-pressure oil injection can be avoided.
Example 5
The invention also provides an oil-immersed power device, comprising: the oil-immersed power equipment comprises an equipment body and the top cover of the oil-immersed power equipment in any embodiment; wherein,
the top opening of equipment body, the top cap lid is located the top opening part of equipment body, and the two links to each other through the connecting piece.
The related parts of the power device embodiment and the top cover embodiment can be referred to each other, and are not described herein again.
In conclusion, according to the oil-immersed power equipment provided by the invention, the flexible porous structural member is introduced into the top cover, so that the oil-immersed power equipment can be properly deformed within a safety range when the equipment body is impacted by overpressure, the protection of the power equipment is realized by reducing the pressure in the equipment body, and the safety performance of the equipment is greatly improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. An oil-immersed power equipment top cap, characterized by includes: the energy absorption and pressure relief layer is connected with the first cover plate; wherein,
the bottom of the first cover plate is used for being connected with the equipment body, the energy-absorbing and pressure-releasing layer is arranged above the first cover plate and is mutually attached, and a porous structural member is arranged in the energy-absorbing and pressure-releasing layer and is used for generating compression deformation to absorb energy when receiving the pressure impact effect in the equipment body transmitted by the first cover plate, so that a pressure-releasing channel is formed between the first cover plate and a connecting piece at the top of the equipment body;
the top of the energy-absorbing pressure-releasing layer is used for being connected with an external part so as to move downwards under the action of gravity of the external part after pressure releasing is finished, and the first cover plate is made to contact and seal the equipment body again.
2. The oil-filled power equipment top cover according to claim 1, wherein the energy-absorbing and pressure-releasing layer is multi-layered.
3. The oil-filled power equipment top cover according to claim 2, wherein a partition plate is arranged between any two adjacent energy absorption and pressure release layers.
4. The oil-filled power equipment top cover according to claim 2, wherein the porosity of the porous structural members in each energy-absorbing and pressure-releasing layer gradually decreases from the lower layer to the upper layer.
5. The oil filled power equipment roof cover of claim 1, wherein the porous structural member is made of a foamed metal.
6. The oil filled power device header of claim 5, wherein the foamed metal is foamed aluminum or foamed steel.
7. The oil filled power device roof according to claim 1, wherein the porous structure is adapted to the shape of the first cover plate.
8. The oil filled power device header of claim 1, wherein the porous structure comprises: the first arc piece and the second arc piece are spliced; wherein,
two ends of the first arc piece are respectively provided with a first butt joint part, two ends of the second arc piece are correspondingly provided with a second butt joint part, and the first butt joint part and the second butt joint part are of step-shaped structures matched with each other for use, so that the first arc piece is connected with the second arc piece.
9. The oil filled power device roof of any of claims 1-8, further comprising: a second cover plate; wherein,
the second cover plate is arranged above the energy-absorbing and pressure-releasing layer, and the top of the second cover plate is used for being connected with an external part so as to move downwards under the action of gravity of the external part after pressure releasing is finished, so that the first cover plate contacts and seals the equipment body again.
10. The oil-filled power equipment top cover according to claim 9, wherein the first cover plate, the energy-absorbing and pressure-releasing layers and the second cover plate are connected through bolts.
11. The oil-filled power equipment top cover according to claim 9, wherein the strength of the energy-absorbing pressure-releasing layer is higher than the gravity of the external part and is smaller than the impact pressure in the equipment body.
12. The oil filled power device header of claim 9, wherein the strength of the second cover plate is greater than the strength of the first cover plate.
13. An oil-filled power device, comprising: a device body and the oil filled power device top cover of any one of claims 1-12; wherein,
the top opening of equipment body, the top cap lid is located the top opening part of equipment body, and the two links to each other through the connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857695.XA CN115376789A (en) | 2022-07-21 | 2022-07-21 | Oil-immersed power equipment top cover and oil-immersed power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210857695.XA CN115376789A (en) | 2022-07-21 | 2022-07-21 | Oil-immersed power equipment top cover and oil-immersed power equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115376789A true CN115376789A (en) | 2022-11-22 |
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ID=84062097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210857695.XA Pending CN115376789A (en) | 2022-07-21 | 2022-07-21 | Oil-immersed power equipment top cover and oil-immersed power equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115376789A (en) |
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2022
- 2022-07-21 CN CN202210857695.XA patent/CN115376789A/en active Pending
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