Sealing structure for hoisting hole of container type transformer substation

Abstract

The utility model relates to a container type transformer station hoisting hole sealing structure comprising a box body top plate and a cover plate, the box body top plate is provided with a hoisting hole, the hoisting hole is covered by the cover plate, and the edge of the hoisting hole is provided with a first fixing plate and a second fixing plate. Wherein the lower end of the first fixing plate is provided with a first bottom plate fixedly connected with a top plate of the box body, the upper end of the first fixing plate is provided with a first sealing assembly in contact with the lower side of the cover plate, the second fixing plate is arranged between the cover plate and the first bottom plate, the lower end of the second fixing plate is provided with a second bottom plate fixedly connected with the first bottom plate, and the upper end of the second fixing plate is fixedly connected with the cover plate through a fastening element. The edge of the cover plate is provided with a cover plate bending part, and the lower end of the cover plate bending part is provided with a second sealing assembly which is in contact with the second bottom plate. According to the sealing assembly, a better sealing effect can be achieved, the anti-aging capacity of the sealing assembly can be improved, meanwhile, the fixing and supporting strength of the cover plate can be guaranteed, the overall structure is compact, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the field of transformer substations, in particular to a sealing structure for a hoisting hole of a container-type transformer substation. Background Art

[0002] Containerized substation is one of the core equipments of photovoltaic and wind power generation. However, due to the special outdoor operating environment, such as sandstorms in the desert, high humidity and high salt fog in the coastal areas, it puts forward higher requirements on the sealing of the holes in the outer shell of the containerized substation. The main purpose of sealing the outer shell of the containerized substation is to prevent external dust and water vapor from entering the interior of the containerized substation and affecting the safe and stable performance and service life of the equipment.

[0003] When assembling traditional container substations, transformers are usually placed inside the box transformer in two ways: one is to enter through the transformer door on the side of the box, and the other is to enter through the lifting hole on the top of the box. The first method has a greater impact on the equipment due to the large size of the transformer door, especially the sealing problem of the transformer door is difficult to handle, and the installation and removal construction requirements are high and difficult. The second method has a hole opened on the top of the box transformer, and the hole size is smaller than the transformer door size of the first method, so the impact on the equipment is relatively small, and the installation and removal construction is also easier to operate.

[0004] However, in the prior art, the sealing structure of the lifting hole of the second method is relatively simple, specifically: the cover plate is placed on the lifting hole, and only a single layer of sealing strip is used between the cover plate and the lifting hole and fixed with bolts to achieve the sealing effect. However, as time goes by, the sealing strip will age and need to be replaced regularly. For offshore photovoltaic, wind power and other projects, the sealing strip is usually in special environments such as high humidity and high salt spray, which will accelerate the aging of the sealing strip.

[0005] The patent with the authorization announcement number CN113314967B discloses a top sealing device for an underground environment box-type substation, in which a sealing plate is located at the top of the joint between the top covers of adjacent cabinets of the box-type substation, and the top plate of the sealing plate is fitted with the top cover, and the side plate is connected to the side of the top cover. There are folded edge sections on both sides of the top plate facing the top cover, and the folded edge sections are connected to the sealing strip. However, this structure is mainly used for the joints between the top covers, and it uses the small contact area of ​​the folded edge section to press the sealing strip, and is not used for sealing the lifting hole on the top of the box-type substation. The lifting hole sealing also needs to consider the support strength of the cover plate.

[0006] The patent with the authorization announcement number CN203645194U discloses a sealing device for the opening of the transformer backpack of a box-type substation, which includes three groups of sealing plates, and a group of sealing plates are respectively arranged on the upper gap, left gap and right gap of the door gap between the opening of the transformer backpack and the door panel, and each group of sealing plates includes a first steel plate and a second steel plate, wherein the first steel plate includes a steel plate body, the lower end of the steel plate body is provided with a first bending plate bent outward, the lower end of the first bending plate is provided with a second bending plate bent downward and parallel to the steel plate body, and the second steel plate is a right-angled structure with one right-angle side inserted into the corresponding door gap, and the other right-angle side is fixed on the door panel. However, this structure is also not used for sealing the lifting hole on the top of the box-type substation, and there is a gap between the first steel plate and the second steel plate. Utility Model Content

[0007] The purpose of the utility model is to provide a container-type substation lifting hole sealing structure, which can achieve better sealing effect and improve the anti-aging ability of the sealing component, while ensuring the fixed supporting strength of the cover plate, and the overall structure is compact and easy to disassemble and assemble.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A sealing structure for a lifting hole of a container-type substation comprises a box top plate and a cover plate, wherein a lifting hole is provided on the box top plate and the lifting hole is covered by the cover plate, and a first fixing plate and a second fixing plate are provided at the edge of the lifting hole, wherein a first bottom plate is provided at the lower end of the first fixing plate and is fixedly connected to the box top plate, and a first sealing component is provided at the upper end and is in contact with the lower side of the cover plate, the second fixing plate is provided between the cover plate and the first bottom plate, and a second bottom plate is provided at the lower end of the second fixing plate and is fixedly connected to the first bottom plate, and the upper end is fixedly connected to the cover plate through a fastening element, a cover plate bending portion is provided at the edge of the cover plate, and a second sealing component is provided at the lower end of the cover plate bending portion and is in contact with the second bottom plate.

[0010] The first fixed plate includes a first vertical plate and a first top plate, wherein the lower end of the first vertical plate is vertically connected to the first bottom plate, and the upper end is vertically connected to the first top plate, and a first sealing assembly is provided at the free end of the first top plate.

[0011] The first sealing assembly includes a first sealing gasket and a first sealing ring, wherein the first sealing gasket is sleeved on the free end of the first top plate, and the first sealing ring is arranged on the upper side of the first sealing gasket and contacts the cover plate.

[0012] The second fixing plate includes a second vertical plate and a second top plate, wherein the lower end of the second vertical plate is vertically connected to the second bottom plate, and the upper end is vertically connected to the second top plate, and the second top plate is fixedly connected to the cover plate via a fastening element.

[0013] The fastening element is a fastening bolt. A threaded sleeve is provided on the lower side of the second top plate. A plurality of mounting holes are provided on the edge of the cover plate, and the fastening bolt is threadedly inserted into the corresponding threaded sleeve after passing through the corresponding mounting hole.

[0014] A bending part bottom plate is provided at the lower end of the bending part of the cover plate, and a second sealing assembly is provided at the free end of the bending part bottom plate.

[0015] The second sealing assembly includes a second sealing gasket and a second sealing ring. The second sealing gasket is sleeved on the free end of the bending part bottom plate, and the second sealing ring is provided on the lower side of the second sealing gasket and contacts the second bottom plate.

[0016] The advantages and positive effects of the present utility model are as follows:

[0017] 1. The present utility model utilizes the first sealing assembly and the second sealing assembly to form a double-layer sealing structure, and the bending part of the cover plate at the edge of the cover plate simultaneously realizes a wrapping effect. Therefore, the present utility model can achieve a better sealing effect, and is particularly suitable for high-humidity and high-salt mist environments of projects such as offshore photovoltaic and wind power.

[0018] 2. The first sealing assembly of the present utility model is hidden inside the cover plate and is not exposed to the air. Therefore, it will not be directly affected by the external environment, which can improve the anti-aging ability of the first sealing assembly, and further can extend the replacement time of the sealing assembly and the service life of the equipment.

[0019] 3. The first fixing plate and the second fixing plate of the present utility model can form two inner and outer supports. In addition to fixing the cover plate, they can also play a role similar to that of a reinforcing rib to ensure the fixing support strength of the cover plate.

[0020] 4. The bending part of the cover plate at the edge of the cover plate of the present utility model can also play a certain auxiliary support role while realizing the wrapping effect, so as to further ensure the support strength of the cover plate.

[0021] 5. The overall structure of the present utility model is compact and convenient for disassembly and assembly. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the installation state of the present utility model,

[0023] Figure 2 is Figure 1 the exploded schematic diagram of the present utility model in

[0024] Figure 3 is Figure 1 the enlarged schematic diagram at A in

[0025] Among them, 1 is the top plate of the box body, 2 is the cover plate, 201 is the fastening bolt, 202 is the threaded sleeve, 203 is the bent part of the cover plate, 204 is the bottom plate of the bent part, 3 is the second sealing assembly, 301 is the second sealing gasket, 302 is the second sealing ring, 4 is the first fixing plate, 401 is the first bottom plate, 402 is the first vertical plate, 403 is the first top plate, 5 is the second fixing plate, 501 is the second bottom plate, 502 is the second vertical plate, 503 is the second top plate, 6 is the first sealing assembly, and 601 is the first sealing gasket, 602 is the first sealing ring. Detailed implementation mode

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] As Figures 1 to 3 shown, the present utility model includes a box body top plate 1 and a cover plate 2. The box body top plate 1 is arranged on the top of the box transformer housing. A lifting hole is provided on the box body top plate 1, and the lifting hole is covered by the cover plate 2. First fixing plates 4 and second fixing plates 5 for supporting the cover plate 2 are provided on the peripheries of the four sides of the lifting hole. As Figure 3 shown, a first bottom plate 401 is provided at the lower end of the first fixing plate 4 and is fixedly connected to the box body top plate 1, and a first sealing assembly 6 is provided at the upper end and contacts the lower side of the cover plate 2. The second fixing plate 5 is arranged between the cover plate 2 and the first bottom plate 401. A second bottom plate 501 is provided at the lower end of the second fixing plate 5 and is fixedly connected to the first bottom plate 401, and the upper end is fixedly connected to the cover plate 2 through a fastening element. A cover plate bent part 203 is provided at the edge of the cover plate 2, and a second sealing assembly 3 is provided at the lower end of the cover plate bent part 203 and contacts the second bottom plate 501. As Figure 3 shown, the present utility model first forms a double-layer sealing structure by using the first sealing assembly 6 and the second sealing assembly 3, and the cover plate bent part 203 at the edge of the cover plate 2 also realizes a wrapping effect at the same time. Therefore, the present utility model can achieve a better sealing effect, especially suitable for high-humidity and high-salt-fog environments of projects such as offshore photovoltaic and wind power. Secondly, the first sealing assembly 6 of the present utility model is hidden in the cover plate 2 and is not exposed to the air, so it will not be directly affected by the external environment, which can improve the anti-aging ability of the first sealing assembly 6, and further can extend the replacement time of the sealing assembly and the service life of the equipment. Thirdly, the first fixing plate 4 and the second fixing plate 5 of the present utility model can form two inner and outer supports, which can not only fix the cover plate 2, but also play a role similar to that of a reinforcing rib to ensure the fixed support strength of the cover plate 2.

[0028] As Figure 3As shown in the figure, in this embodiment, the first fixing plate 4 is of a U-shaped structure, which includes a first bottom plate 401, a first vertical plate 402, and a first top plate 403. Among them, the first bottom plate 401 is welded and fixed to the top plate 1 of the box body. The lower end of the first vertical plate 402 is vertically connected to the first bottom plate 401, and the upper end is vertically connected to the first top plate 403. A first sealing assembly 6 is provided at the free end of the first top plate 403 and contacts the lower side of the cover plate 2.

[0029] As Figure 3 shown in the figure, in this embodiment, the first sealing assembly 6 includes a first sealing gasket 601 and a first sealing ring 602. Among them, the first sealing gasket 601 is sleeved on the free end of the first top plate 403, and the first sealing ring 602 is provided on the upper side of the first sealing gasket 601 and contacts the cover plate 2.

[0030] As Figure 3 shown in the figure, in this embodiment, the second fixing plate 5 is also of a U-shaped structure, which includes a second bottom plate 501, a second vertical plate 502, and a second top plate 503. Among them, the second bottom plate 501 is welded and fixed to the first bottom plate 401. The lower end of the second vertical plate 502 is vertically connected to the second bottom plate 501, and the upper end is vertically connected to the second top plate 503. The second top plate 503 is fixedly connected to the cover plate 2 through fastening elements. In this embodiment, the fastening element is a fastening bolt 201. As Figure 3 shown in the figure, a threaded sleeve 202 is provided on the lower side of the second top plate 503. As Figures 1 to 2 shown in the figure, a plurality of mounting holes are provided at the edge of the cover plate 2, and the fastening bolt 201 is threadedly inserted into the corresponding threaded sleeve 202 after passing through the corresponding mounting hole. In addition, while the fastening bolt 201 fixes the cover plate 2, it can also apply a certain pressure to the first sealing assembly 6 and the second sealing assembly 3 to ensure the sealing effect. Other suitable cover plate 2 fixing structures can also be adopted according to actual needs in the present utility model.

[0031] As Figure 3 shown in the figure, in this embodiment, a bent portion bottom plate 204 is provided at the lower end of the bent portion 203 of the cover plate, and a second sealing assembly 3 is provided at the free end of the bent portion bottom plate 204 and contacts the second bottom plate 501.

[0032] As Figure 3 shown in the figure, in this embodiment, the second sealing assembly 3 includes a second sealing gasket 301 and a second sealing ring 302. Among them, the second sealing gasket 301 is sleeved on the free end of the bent portion bottom plate 204, and the second sealing ring 302 is provided on the lower side of the second sealing gasket 301 and contacts the second bottom plate 501.

[0033] In addition, it should be noted that Figure 1 and Figure 2For the sake of more clearly expressing the structure of the present utility model, in actual use, the first fixing plates 4 and the second fixing plates 5 are provided on each side of the lifting hole.

[0034] The working principle of the present utility model is as follows:

[0035] As Figure 3 shown, when the present utility model is in use, a double-layer sealing structure is formed by the first sealing assembly 6 and the second sealing assembly 3, and the cover bending portion 203 at the edge of the cover plate 2 realizes the wrapping effect at the same time. Therefore, the present utility model can achieve a better sealing effect. In addition, the first sealing assembly 6 is hidden in the cover plate 2 and is not directly affected by the external environment. Therefore, the anti-aging ability of the first sealing assembly 6 can be improved. The overall structure of the present utility model is compact and convenient for installation and disassembly. As Figure 3 shown, after the fastening bolts 201 and the threaded sleeves 202 of the present utility model are disassembled, the cover plate 2 can be disassembled. At this time, the transformer can be sent into the box-type transformer housing through the lifting hole on the top plate 1 of the box body. When the cover plate 2 is installed, it only needs to be directly buckled on the first top plate 403 at the upper end of the first fixing plate 4 and the second top plate 503 at the upper end of the second fixing plate 5. Then, the operator tightens each fastening bolt 201 and ensures that the first sealing assembly 6 and the second sealing assembly 3 are tightly pressed for sealing. The first vertical plate 402 of the first fixing plate 4 and the second vertical plate 502 of the second fixing plate 5 of the present utility model can form two inner and outer supports, which can play a role similar to that of a reinforcing rib to ensure the fixed support strength of the cover plate 2. At the same time, the cover bending portion 203 at the edge of the cover plate 2 can also play a certain auxiliary support role while realizing the wrapping effect, so as to further ensure the support strength of the cover plate 2.

Claims

1. A container-type substation lifting hole sealing structure, comprising a box top plate and a cover plate, wherein the box top plate is provided with a lifting hole, and the lifting hole is covered by the cover plate, characterized in that: A first fixing plate (4) and a second fixing plate (5) are provided at the edge of the lifting hole, wherein the first fixing plate (4) has a first bottom plate (401) at the lower end thereof fixedly connected to the top plate (1) of the box body, and has a first sealing component (6) at the upper end thereof in contact with the lower side of the cover plate (2); the second fixing plate (5) is provided between the cover plate (2) and the first bottom plate (401), and has a second bottom plate (501) at the lower end thereof fixedly connected to the first bottom plate (401), and has an upper end fixedly connected to the cover plate (2) via a fastening element; a cover plate bending portion (203) is provided at the edge of the cover plate (2), and a second sealing component (3) is provided at the lower end of the cover plate bending portion (203) in contact with the second bottom plate (501).

2. The container-type substation lifting hole sealing structure according to claim 1 is characterized in that: The first fixed plate (4) comprises a first vertical plate (402) and a first top plate (403), wherein the lower end of the first vertical plate (402) is vertically connected to the first bottom plate (401), and the upper end is vertically connected to the first top plate (403), and the free end of the first top plate (403) is provided with a first sealing assembly (6).

3. The container-type substation lifting hole sealing structure according to claim 2 is characterized in that: The first sealing assembly (6) comprises a first sealing gasket (601) and a first sealing ring (602), wherein the first sealing gasket (601) is sleeved on the free end of the first top plate (403), and the first sealing ring (602) is arranged on the upper side of the first sealing gasket (601) and in contact with the cover plate (2).

4. The container-type substation lifting hole sealing structure according to claim 1 is characterized in that: The second fixing plate (5) comprises a second vertical plate (502) and a second top plate (503), wherein the lower end of the second vertical plate (502) is vertically connected to the second bottom plate (501), and the upper end is vertically connected to the second top plate (503), and the second top plate (503) is fixedly connected to the cover plate (2) via a fastening element.

5. The container-type substation lifting hole sealing structure according to claim 4 is characterized in that: The fastening element is a fastening bolt (201), a threaded sleeve (202) is provided on the lower side of the second top plate (503), a plurality of mounting holes are provided on the edge of the cover plate (2), and the fastening bolt (201) is threadedly inserted into the corresponding threaded sleeve (202) after passing through the corresponding mounting holes.

6. The container-type substation lifting hole sealing structure according to claim 1 is characterized in that: A bending portion bottom plate (204) is provided at the lower end of the cover plate bending portion (203), and a second sealing assembly (3) is provided at the free end of the bending portion bottom plate (204).

7. The container-type substation lifting hole sealing structure according to claim 6 is characterized in that: The second sealing assembly (3) comprises a second sealing pad (301) and a second sealing ring (302), wherein the second sealing pad (301) is sleeved on the free end of the bent portion bottom plate (204), and the second sealing ring (302) is arranged on the lower side of the second sealing pad (301) and in contact with the second bottom plate (501).

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