Protective cover and electrical device

Abstract

The utility model discloses a protective cover and electrical equipment. The utility model discloses a protective cover for moisture trap, wherein, the protective cover includes cover body, roof and closing plate, the side of cover body has the open mouth, moisture trap can along the open mouth enter the cover body, the roof is located the top of cover body, the roof is equipped with first avoiding groove and second avoiding groove, first avoiding groove with second avoiding groove communicate with the open mouth, first avoiding groove is used for avoiding the fastener of moisture trap installation, second avoiding groove is used for avoiding the pipeline connected with moisture trap, and the closing plate is detachably located one side of cover body to close the open mouth. Moisture trap can be placed in the protective cover of the utility model, in the harsh environment, the protective cover can stop flying sand and stone, protects moisture trap not to be damaged by on -the -spot foreign matter, can effectively reduce the operation and maintenance cost, and the installation is convenient, and maintenance is easy.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a protective cover and electrical equipment. Background Technology

[0002] A dehumidifier is a device designed for air purification and moisture adsorption in oil-immersed transformers or instrument transformers. The dehumidifier is connected to the oil conservator of the transformer or instrument transformer. When the transformer or instrument transformer is running, the volume of the transformer oil in the tank expands or contracts with changes in ambient temperature or load, and the gas in the oil conservator also expands or contracts accordingly. During this process, the outside air exchanges with the air in the oil conservator through the dehumidifier. When the outside air passes through the dehumidifier, the desiccant inside the dehumidifier can adsorb moisture and impurities, keeping the transformer oil dry and maintaining the insulation strength of the transformer oil within the standard range.

[0003] Dehumidifiers include conventional dehumidifiers, explosion-proof dehumidifiers, and intelligent maintenance-free dehumidifiers. The latter two are more expensive. Due to cost constraints, existing new energy box-type transformers all use conventional dehumidifiers. These dehumidifiers generally have an oil cup structure, making them prone to breakage and damage from impacts by foreign objects. With the increasing number of new energy wind power and photovoltaic projects each year, the demand for new energy box-type transformers is significant. These transformers also need to adapt to different project site environments. Some projects are located in the Gobi Desert, where the environment is harsh, with frequent sandstorms, making the dehumidifiers highly susceptible to damage from sand and gravel. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a protective cover to protect the dehumidifier from damage by foreign objects on site, effectively reducing operation and maintenance costs.

[0005] This utility model also proposes an electrical device.

[0006] A protective cover according to a first aspect of the present invention is used for a desiccant, wherein the protective cover includes a cover body, a top plate, and a sealing plate; one side of the cover body has an opening, through which the desiccant can enter the cover body; the top plate is disposed on the top of the cover body, and the top plate has a first clearance groove and a second clearance groove, the first clearance groove and the second clearance groove communicating with the opening; the first clearance groove is used to avoid fasteners for installing the desiccant, and the second clearance groove is used to avoid pipes connected to the desiccant; the sealing plate is detachably disposed on one side of the cover body to block the opening.

[0007] The protective cover according to the embodiments of this utility model has at least the following beneficial effects: the dehumidifier can be placed inside the protective cover of this utility model. In harsh environments, the protective cover can block flying sand and stones, protect the dehumidifier from damage by foreign objects on site, effectively reduce operation and maintenance costs, and is easy to install and maintain.

[0008] According to some embodiments of the present invention, the sealing plate has assembly openings on opposite sides, and the sealing plate is fixedly connected to the cover by fasteners passing through the assembly openings.

[0009] According to some embodiments of the present invention, the assembly port is configured as a strip groove, and the open end of the strip groove extends to the side edge of the sealing plate.

[0010] According to some embodiments of the present invention, the upper part of the sealing plate is provided with a third clearance groove, the opening end of the third clearance groove extends to the side edge of the sealing plate, and the third clearance groove is used to avoid the reinforcing plate connected to the pipe.

[0011] According to some embodiments of the present invention, a viewing window is provided on the side of the cover away from the opening, and a transparent element is installed in the viewing window.

[0012] According to some embodiments of the present invention, a sealing strip is installed between the side edge of the viewing window and the transparent component.

[0013] According to some embodiments of the present invention, the side edge of the viewing window is coated with adhesive, and the sealing strip is bonded to the side edge of the viewing window by the adhesive.

[0014] According to some embodiments of the present invention, a base plate is installed at the bottom of the cover, and the base plate is provided with a plurality of ventilation holes, which connect the inner cavity of the cover to the external environment.

[0015] According to some embodiments of this utility model, the diameter of the vent hole is less than or equal to 10 mm.

[0016] An electrical device according to a second aspect of the present invention includes a dehumidifier and a protective cover as described in any of the preceding claims, wherein the dehumidifier is disposed within the protective cover.

[0017] The electrical equipment according to the embodiments of this utility model has at least the following beneficial effects: the dehumidifier of the electrical equipment is placed inside the protective cover of this utility model. In harsh environments, the protective cover can block flying sand and stones, protect the dehumidifier from damage by foreign objects on site, effectively reduce operation and maintenance costs, and is easy to install and maintain.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a perspective view of a protective cover according to an embodiment of the present utility model;

[0021] Figure 2 This is a top view of the protective cover according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the base plate of the protective cover according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sealing plate of the protective cover according to one embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the installation structure of a protective cover for an electrical device according to an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the assembly of the protective cover and the desiccant according to one embodiment of the present invention.

[0026] Icon labels:

[0027] Protective cover 100, cover body 110, opening 111, viewing window 112, transparent part 113, sealing strip 114, top plate 120, first clearance groove 121, second clearance groove 122, sealing plate 130, assembly port 131, third clearance groove 132, bottom plate 140, ventilation hole 141;

[0028] Dehumidifier 200, mounting plate 210, fastener 220, pipe 230, reinforcing plate 240;

[0029] 300 oil storage tank. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the orientation descriptions, such as left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figure 5 The protective cover 100 proposed in this embodiment is used on the dehumidifier 200 of electrical equipment such as oil-immersed transformers and instrument transformers to protect the dehumidifier 200 from damage by foreign objects. Specifically, refer to... Figure 1 , Figure 2 The protective cover 100 includes a cover body 110, a top plate 120, and a sealing plate 130. The cover body 110 has a hollow internal structure that can accommodate a dehumidifier 200. One side of the cover body 110 has an opening 111 through which the dehumidifier 200 can enter the cover body 110. The top plate 120 is located on the top of the cover body 110 and has a first clearance groove 121 and a second clearance groove 122. Both the first clearance groove 121 and the second clearance groove 122 are connected to the opening 111. The first clearance groove 121 is used to avoid the fastener 220 for mounting the dehumidifier 200, and the second clearance groove 122 is used to avoid the pipe 230 connected to the dehumidifier 200. The sealing plate 130 is located on one side of the cover body 110 and is detachably mounted on the cover body 110 by fasteners. The sealing plate 130 is used to seal the opening 111.

[0035] Reference Figure 5 , Figure 6When installing the protective cover 100, loosen the fasteners 220 on the mounting plate 210 of the dehumidifier 200 (the fasteners 220 pass through the mounting plate 210 and are threadedly connected to the threaded holes on the dehumidifier 200). Push the cover 110 along the mounting plate 210. The fasteners 220 pass through the first clearance groove 121 on the top plate 120, with the head of the fasteners 220 above the top plate 120 and the mounting plate 210 below the top plate 120. Continue pushing the cover 110 forward, and the dehumidifier 200 enters the cover 110 through the opening 111. At the same time, the dehumidifier... The pipe 230 connected to the dehumidifier 200 passes through the second clearance groove 122. After pushing the cover 110 into the cavity of the cover 110, the fastener 220 is tightened to fix the top plate 120 of the protective cover 100 between the head of the fastener 220 and the mounting plate 210, thereby fixing the dehumidifier 200 and the protective cover 100 on the mounting plate 210 of the dehumidifier 200. Then, the sealing plate 130 is installed on one side of the cover 110 by the fastener, and the opening 111 is sealed by the sealing plate 130, thus completing the assembly of the protective cover 100. Therefore, the desiccant 200 is placed inside the protective cover 100 of this invention. During transformer operation, changes in ambient temperature or load cause the transformer oil in the tank to expand or contract, and the gas in the oil conservator also expands or contracts accordingly. During this process, outside air enters the cavity of the protective cover 100 through the bottom and exchanges with the air inside the oil conservator through the desiccant 200. When outside air passes through the desiccant 200, the desiccant inside the desiccant 200 can absorb moisture and impurities, preventing the transformer oil from getting damp and maintaining the insulation strength of the transformer oil within the standard range. At the same time, in harsh environments, the side walls and top plate 120 of the protective cover 100 can block flying sand and stones, protecting the desiccant 200 from damage by foreign objects on site, thereby effectively reducing operation and maintenance costs. Furthermore, installation and disassembly are convenient, and maintenance is easy.

[0036] Reference Figure 1 , Figure 4 In some embodiments, the sealing plate 130 has mounting openings 131 on opposite sides, and the sealing plate 130 is fixedly connected to the cover 110 by fasteners passing through the mounting openings 131.

[0037] Specifically, refer to Figure 1 , Figure 4 In this embodiment, the assembly port 131 is provided on the upper and lower sides of the sealing plate 130, and the assembly port 131 is configured as a strip groove. The open end of the strip groove extends to the side edge of the sealing plate 130. This reduces the assembly error between the sealing plate 130 and the cover 110, improves the assembly efficiency of the sealing plate 130 in sealing the opening 111, and facilitates the disassembly of the sealing plate 130.

[0038] It should be noted that the sealing plate 130 can also be detachably assembled onto the cover 110 via fasteners or other detachable structures, which is not limited here.

[0039] Reference Figure 5 To enhance the strength of the pipe 230 connecting the dehumidifier 200 and electrical equipment such as a transformer, and to prevent deformation of the pipe 230, a reinforcing plate 240 is fixed on the oil tank 300 of the transformer. The reinforcing plate 240 is fixedly connected to both ends of the pipe 230 connecting the dehumidifier 200 and the oil tank 300.

[0040] Reference Figure 1 , Figure 4 , Figure 5 In some embodiments, the upper part of the sealing plate 130 is provided with a third clearance groove 132, the open end of the third clearance groove 132 extends to the side edge of the sealing plate 130, and the third clearance groove 132 can avoid the reinforcing plate 240 connected to the pipe 230, so as to avoid the reinforcing plate 240 interfering with the installation of the protective cover 100.

[0041] Reference Figure 2 , Figure 6 In some embodiments, the cover 110 has a viewing window 112 on the side away from the opening 111. The viewing window 112 is equipped with a transparent element 113. Through the transparent element 113 installed on the viewing window 112, the moisture status of the silica gel in the dehumidifier 200 can be observed, and the status of the dehumidifier 200 can be grasped in time to avoid affecting the operation of electrical equipment.

[0042] Reference Figure 2 , Figure 6 In some embodiments, a sealing strip 114 is installed between the side edge of the viewing window 112 and the transparent part 113 to prevent rainwater from leaking into the cover 110 from the connection between the transparent part 113 and the cover 110, thereby improving the service life of the dehumidifier 200.

[0043] In some embodiments, the side edge of the viewing window 112 is coated with adhesive, and the sealing strip 114 is bonded to the side edge of the viewing window 112 by the adhesive, thereby preventing the sealing strip 114 from shifting during the assembly process and improving the assembly efficiency of the sealing strip 114.

[0044] Reference Figure 3 , Figure 6In some embodiments, a base plate 140 is installed at the bottom of the cover 110. The base plate 140 is provided with multiple ventilation holes. The diameter of the ventilation holes can be set to less than or equal to 10 mm. The ventilation holes connect the inner cavity of the cover 110 with the external environment. Through the ventilation holes, outside air can enter the cavity of the protective cover 100 through the bottom of the protective cover 100, thereby allowing the dehumidifier 200 to exchange air with the oil tank. At the same time, it can prevent animals from entering the cover 110 to build nests, so as to ensure the normal use of the dehumidifier 200.

[0045] Reference Figure 5 The electrical equipment proposed in this embodiment of the utility model includes an oil storage tank 300, a dehumidifier 200 and a protective cover 100 of any of the above. The dehumidifier 200 is connected to the oil storage tank 300 through a pipe 230 and is located inside the protective cover 100.

[0046] The desiccant 200 of the electrical equipment is placed inside the protective cover 100 of this utility model. During transformer operation, changes in ambient temperature or load cause the transformer oil in the tank to expand or contract, and the gas in the oil conservator also expands or contracts accordingly. During this process, outside air enters the cavity of the protective cover 100 through the bottom and exchanges with the air inside the oil conservator through the desiccant 200. When outside air passes through the desiccant 200, the desiccant inside the desiccant 200 can absorb moisture and impurities, preventing the transformer oil from getting damp and maintaining the insulation strength of the transformer oil within the standard range. At the same time, in harsh environments, the side walls and top plate 120 of the protective cover 100 can block flying sand and stones, protecting the desiccant 200 from damage by foreign objects on site, thereby effectively reducing operation and maintenance costs. Furthermore, installation and disassembly are convenient, and maintenance is easy.

[0047] It is understood that the electrical equipment can be an oil-immersed transformer or an instrument transformer, and no specific limitation is made here.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A protective cover for a dehumidifier, characterized in that, include: A cover having an opening on one side, through which the dehumidifier can enter the cover; A top plate is provided on the top of the cover. The top plate is provided with a first clearance groove and a second clearance groove. The first clearance groove and the second clearance groove are connected to the opening. The first clearance groove is used to avoid the fasteners for installing the desiccant, and the second clearance groove is used to avoid the pipes connected to the desiccant. A sealing plate is detachably mounted on one side of the cover to seal the opening.

2. The protective cover according to claim 1, characterized in that, The sealing plate has mounting openings on opposite sides, and the sealing plate is fixedly connected to the cover by fasteners passing through the mounting openings.

3. The protective cover according to claim 2, characterized in that, The assembly port is configured as a strip groove, the open end of which extends to the side edge of the sealing plate.

4. The protective cover according to claim 1, characterized in that, The upper part of the sealing plate is provided with a third clearance groove, the opening end of the third clearance groove extends to the side edge of the sealing plate, and the third clearance groove is used to avoid the reinforcing plate connected to the pipe.

5. The protective cover according to claim 1, characterized in that, The cover has a viewing window on the side opposite to the opening, and the viewing window is fitted with a transparent element.

6. The protective cover according to claim 5, characterized in that, A sealing strip is installed between the side edge of the viewing window and the transparent component.

7. The protective cover according to claim 6, characterized in that, The side edge of the viewing window is coated with adhesive, and the sealing strip is bonded to the side edge of the viewing window by the adhesive.

8. The protective cover according to claim 1, characterized in that, The bottom of the cover is equipped with a base plate, and the base plate is provided with multiple ventilation holes, which connect the inner cavity of the cover to the external environment.

9. The protective cover according to claim 8, characterized in that, The diameter of the vent hole is less than or equal to 10 mm.

10. An electrical device, characterized in that, It includes a desiccant and a protective cover as described in any one of claims 1 to 9, wherein the desiccant is disposed inside the protective cover.

Images