CN210671169U - Electromagnetic shielding cover for electrical equipment - Google Patents
Electromagnetic shielding cover for electrical equipment Download PDFInfo
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- CN210671169U CN210671169U CN201920815134.7U CN201920815134U CN210671169U CN 210671169 U CN210671169 U CN 210671169U CN 201920815134 U CN201920815134 U CN 201920815134U CN 210671169 U CN210671169 U CN 210671169U
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Abstract
The utility model relates to an electrical equipment electromagnetic shield cover. The electrical equipment electromagnetic shielding cover comprises a cylindrical shielding cover main body and a top cover body fixed at an opening at the top of the shielding cover main body; the shield cover main body is formed by splicing a plurality of side shield plates in sequence along the circumferential direction, and the top cover body is formed by splicing a plurality of top shield plates in sequence. The utility model discloses an electrical equipment electromagnetic shield cover comprises shield cover main part and top cover body, and the shield cover main part is formed by the side shield plate butt joint of a plurality of flat plate forms, and the top cover body is formed by the top shield plate butt joint of a plurality of flat plate forms, and the shield cover comprises the less flat board of a plurality of sizes, makes the shield cover satisfy under the prerequisite of insulating distance between and the high-tension apparatus, the processing of the shield cover of being convenient for.
Description
Technical Field
The utility model relates to an electrical equipment electromagnetic shield cover.
Background
Various electrical equipment in various fields of the power industry, especially high-voltage equipment, often need set up safe and reliable protector in the verification of earlier stage and practical application process to carry out the electromagnetic shield to electrical equipment through protector, and then guarantee the steady operation of equipment and the personal safety of the staff who works near high-voltage equipment.
Electromagnetic shielding is generally achieved by providing a shielding can, but for high voltage devices that are cylindrical or nearly cylindrical in their entirety and that are bulky, a large cylindrical shielding can is required, which results in a complex manufacturing of the shielding device. Meanwhile, the shielding case needs to be considered to be provided with a maintenance opening so as to be convenient for maintaining the internal equipment of the shielding case, and the cylindrical shielding case is difficult to be provided with the maintenance opening.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electrical equipment electromagnetic shield cover for solve the difficult problem of processing of shield cover that is used for the great cylindrical or is close cylindrical equipment of size among the prior art.
In order to achieve the above object, the utility model discloses an electrical equipment electromagnetic shield cover's technical scheme is: the electrical equipment electromagnetic shielding cover comprises a cylindrical shielding cover main body and a top cover body fixed at an opening at the top of the shielding cover main body;
the shielding case main body is formed by sequentially splicing a plurality of side shielding plates along the circumferential direction, and side plate folded edges are arranged at the side edges of each side shielding plate in the horizontal direction and are used for fixedly connecting the adjacent side shielding plates;
the top cover body is formed by sequentially splicing a plurality of top shielding plates, the two sides of each top shielding plate in the horizontal direction are bevel edges, and the bevel edges of each top shielding plate are provided with top plate folded edges which are used for fixedly connecting the adjacent top shielding plates;
the number of the top shielding plates is equal to that of the side shielding plates, and the outer side edge of each top shielding plate in the horizontal direction is aligned with the top edge of the corresponding side shielding plate.
The utility model discloses an electrical equipment electromagnetic shield cover's beneficial effect is: the shield cover comprises shield cover main part and the top cover body, and the shield cover main part is formed by the butt joint of the side shield board of a plurality of flat plate forms, and the top cover body is formed by the butt joint of the top shield board of a plurality of flat plate forms, and the shield cover comprises the less flat board of a plurality of sizes, makes the shield cover satisfy under the prerequisite of insulating distance between with high-voltage equipment, the processing of the shield cover of being convenient for.
Further, fastener through holes are formed in the side plate folded edges and/or the top plate folded edges, and adjacent side plate folded edges and/or adjacent top plate folded edges are fixedly connected through fasteners penetrating through the fastener through holes.
The novel shielding plate has the advantages that the fixed connection between the side shielding plates and/or between the top shielding plates can be realized through a simple structure, and the assembly is convenient.
Furthermore, the side shielding plate is provided with a side plate top folding edge at the top edge in the vertical direction, a top plate bottom folding edge is arranged at the bottom edge in the vertical direction of the top shielding plate, and the side plate top folding edge and the top plate bottom folding edge are mutually fixed to realize the fixed connection between the shielding case main body and the top cover body.
The shielding case has the beneficial effects that the shielding case main body is fixedly connected with the top cover body, the overall structural strength of the shielding case is improved, and the shielding case main body and the top cover body are fixedly connected through the side plate top folding edge and the top plate bottom folding edge, so that the connection strength of the shielding case main body and the top cover body is favorably ensured.
Further, the top shielding plate is a trapezoidal plate, an opening is formed in the middle of the top cover body, a polygonal top sealing plate used for sealing the opening in the middle of the top cover body is arranged at the opening in the middle of the top cover body, and cable through holes are formed in the polygonal top sealing plate.
Its beneficial part lies in, under the prerequisite of guaranteeing the structural strength of the overhead guard body, sets up polygon top sealing board and is convenient for set up the cable via hole that the size is suitable according to the in service behavior, does benefit to passing of the cable of the high-tension apparatus in the shield cover.
Furthermore, the top cover body is of a frustum pyramid structure with the small end upwards.
The top cover has the beneficial effects that the top shielding plates are mutually supported, so that the top cover plate forms a three-dimensional structure, the structural strength of the top cover body is improved, and the top cover body is not easy to deform when being subjected to external force.
Furthermore, a side plate bottom folding edge is arranged at the bottom edge of the side shielding plate in the vertical direction and used for fixing the shielding case main body on a shielding case fixing base.
The shielding case has the beneficial effects that the stable arrangement of the shielding case main body on the fixed basis of the shielding case is favorably ensured.
Furthermore, at least one side shield plate and/or at least one top shield plate are provided with maintenance ports, and maintenance ports are provided with maintenance seal plates for plugging the maintenance ports.
The shielding case has the advantages of simple structure and no excessive influence on the structural strength of the shielding case during maintenance.
Furthermore, the top opening part of the shielding case main body is provided with a reinforcing frame, and the reinforcing frame is fixedly connected with the two side shielding plates at least respectively so as to improve the structural strength of the shielding case main body.
The shielding case has the advantage that the shielding case body is prevented from deforming in the transportation or use process.
Furthermore, the shielding case main body is enclosed by an even number of side shielding plates, the reinforcing frame comprises a cross beam and a longitudinal beam, the cross beam is respectively and fixedly connected with the two oppositely arranged side shielding plates, the two cross beams are arranged in parallel, and the two cross beams are fixedly connected through the longitudinal beam to improve the structural strength of the reinforcing frame.
The shielding case has the beneficial effects that the number of the side shielding plates is even, the shielding case main body can be provided with two oppositely-arranged side shielding plates, the arrangement of the reinforcing frame is convenient, and the supporting frame consists of the cross beam and the longitudinal beam, so that the supporting frame has better structural strength.
Furthermore, the number of the side shielding plates and the number of the top shielding plates are more than six.
The shielding cover has the beneficial effects that the assembly efficiency and the occupied area are considered on the premise that the shielding cover meets the insulating distance with high-voltage equipment.
Drawings
Fig. 1 is a three-dimensional view of an embodiment of an electromagnetic shield for electrical equipment according to the present invention;
fig. 2 is a top view of an embodiment of the electromagnetic shield of the present invention;
fig. 3 is a three-dimensional view of the shield body and the reinforcing frame of the electromagnetic shield of the present invention;
fig. 4 is a three-dimensional view of a top cover body of an embodiment of the electromagnetic shield of the present invention for electrical equipment;
fig. 5 is a three-dimensional view of a side shield plate of an embodiment of the electromagnetic shield of the present invention;
fig. 6 is a three-dimensional view of a top shield plate of an embodiment of an electromagnetic shield for electrical equipment of the present invention;
in the figure: 1. the shielding case comprises a shielding case main body, 11 side shielding plates, 12 side plate folding edges, 13 side plate bottom folding edges, 14 bottom wire passing holes, 2 top cover bodies, 21 top shielding plates, 22 top plate folding edges, 3 reinforcing frames, 31 cross beams, 32 longitudinal beams, 4 top sealing plates, 41 bus bridge connecting holes.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a specific embodiment of electrical equipment electromagnetic shield cover, as shown in fig. 1 and fig. 2, electrical equipment electromagnetic shield cover (hereinafter referred to as shield cover) includes the shield cover main part 1 of eight prism forms and sets up the top cover body 2 at shield cover main part 1 open-top department.
As shown in fig. 3 and 5, the shield case main body 1 is formed by splicing eight side shield plates 11 in sequence, a side plate folded edge 12 is arranged at a side edge of each side shield plate 11 in the horizontal direction, a through hole is formed in each side plate folded edge 12, the adjacent side shield plates 11 are fixedly connected with a nut matched with the side plate connecting bolt through a side plate connecting bolt arranged in the through hole, and the through hole forms a fastener through hole. The bottom edge of the side shielding plate 11 in the vertical direction is provided with a side plate bottom folding edge 13 which is bent outwards, a through hole is formed in the side plate bottom folding edge 13, and the shielding case main body 1 is fixed on a shielding case fixing base through a mounting bolt in the through hole.
Be equipped with the maintenance mouth on the side shield plate 11, maintenance mouth department is equipped with the maintenance shrouding that is used for shutoff maintenance mouth, and the edge of maintenance shrouding is equipped with a plurality of connect the via hole, is equipped with the connect the screw hole that corresponds with connect the via hole on the side shield plate 11, and the screw in passes connect the via hole simultaneously and connect the screw hole's bolt to make the maintenance shrouding set up on the side shield plate 11 with releasable connection's form. The bottom wire passing holes 14 for the cables of the high-voltage equipment to penetrate out are formed in the two oppositely arranged side shielding plates 11, and the bottom wire passing holes 14 are formed by butt joint of clamping grooves respectively located on the side shielding plates 11 and the maintenance closing plate.
As shown in fig. 4 and 6, the top cover body 2 is a frustum pyramid structure formed by eight trapezoidal top shielding plates 21 sequentially spliced, the small end of the frustum pyramid structure faces up, the two side edges of the horizontal direction of the top shielding plates 21 are oblique edges, the oblique edges of the top shielding plates 21 are provided with top plate folded edges 22, through holes are formed in the top plate folded edges 22, and the adjacent top shielding plates 21 are fixedly connected with nuts matched with the top plate connecting bolts through top plate connecting bolts arranged in the through holes. The top of the top cover body 2 has a top opening, the top opening of the top cover body 2 is provided with a top sealing plate 4 used for sealing the regular octagon of the top opening, the horizontal direction inner side of the top shielding plate 21 is provided with a top plate top folding edge, the top sealing plate 4 is matched with the top plate top folding edge and detachably fixed on the top cover body 2 through a bolt, a bus bridge connecting hole 41 is formed in the top sealing plate 4, a cable which can be used for high-voltage equipment penetrates through the shielding cover, and the size of the bus bridge connecting hole 41 can be adjusted according to use requirements.
Be equipped with the maintenance mouth on the top shield plate 21, maintenance mouth department is equipped with the maintenance shrouding that is used for the shutoff maintenance mouth, and the edge of maintenance shrouding is equipped with a plurality of connect the via hole, is equipped with the connect the screw hole that corresponds with connect the via hole on top shield plate 21, and the screw in passes connect the via hole simultaneously and connect the screw hole's bolt to make the maintenance shrouding set up on top shield plate 21 with releasable connection's form.
The outside limit of the horizontal direction of each top shield plate 21 aligns with the topside that corresponds side shield plate 11, and the vertical direction topside department of side shield plate 11 is equipped with curb plate top hem, and the base department of the vertical direction of top shield plate 21 is equipped with roof bottom hem, corresponds on curb plate top hem and the roof bottom hem and is equipped with the through-hole, and the bolt fixed connection in the through-hole is passed through with top shield plate 21 to the side shield plate 11 that corresponds.
As shown in fig. 3, a reinforcing frame 3 is disposed at the top opening of the shield main body 1, the reinforcing frame 3 includes a cross beam 31 and a longitudinal beam 32, and the cross beam 31 is respectively and fixedly connected to the two oppositely disposed side shield plates 11 to improve the structural strength of the shield main body 1. Two cross beams 31 are arranged in parallel, and the two cross beams 31 are fixedly connected through a longitudinal beam 32 to improve the structural strength of the reinforcing frame 3. The reinforcing frame 3 can be used for hoisting equipment to hoist the shielding case.
The top shield plate 21, the side shield plates 11, the maintenance closing plate, and the top sealing plate 4 in this embodiment are all formed by processing aluminum-zinc clad plates. The folded edges are attached to each other, so that the whole shielding cover is conducted, and the electric potential between all positions of the shielding cover is equal to the electric potential, and the shielding cover has a good electromagnetic shielding function. The shield cover is grounded through the ground wire so as to reduce the injury to the body of a worker when the worker mistakenly touches the shield cover.
In this embodiment, the connection threaded holes in the side shield plate 11 and the top shield plate 21 are formed by welding a threaded connector having an internal thread to the side shield plate 11 and the top shield plate 21. In other embodiments, the side shield plate and the top shield plate may be punched, so that the plate body extends to a certain depth and forms a through hole, and an internal thread is processed in the punched through hole to form a connection threaded hole.
In other embodiments, the bottom folded edge of the side plate may be bent inward or not, and when the bottom folded edge is not provided, the shield case body needs to be fixed to the shield case installation base through other manners, such as welding, and providing a local ear plate on the shield case installation base, where the local ear plate is matched with the surface of the shield case body and fixedly connected through a thread.
In other embodiments, the side shield plates may not be provided with the top folded edges of the side plates, the top shield plate may not be provided with the bottom folded edges of the top plate, and the side shield plates and the top shield plate may be connected by other methods, for example, an L-shaped intermediate connector is provided, and two portions of the intermediate connector forming an angle with each other are respectively fixedly connected with the side shield plates and the top shield plate.
In other embodiments, the top wall plates and the side wall plates may not be provided with folded edges, and the top shielding plates and the side shielding plates are fixedly connected by welding.
In other embodiments, the top cover body may not be provided with a cable via hole, and a cable of the high-voltage device passes through the bottom wire passing hole at the bottom of the shield cover main body, or a through hole capable of passing a wire is formed in the shield cover installation base.
In other embodiments, the top housing may also be a flat plate structure formed by splicing top shielding plates in a horizontal direction.
In other embodiments, maintenance openings may not be provided in all of the side shield plates and the top shield plate, and in this case, when the high-voltage equipment needs to be maintained, one or more of the top shield plate or the side shield plates are removed to maintain the high-voltage equipment, or side doors which can be opened and closed are provided on the side shield plates and the top shield plate to access the space between the equipment and the side plates to achieve maintenance. It is of course also possible to provide service openings only in parts of the side and top shields.
In other embodiments, the reinforcing frame may not be provided, and the structural strength of the shield case main body is ensured by the structure of the shield case main body itself and the fixation of the shield case mounting base to the side shield plate.
In other embodiments, the shield main body may be a cylinder of other forms, for example, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc., and when the edges of the shield main body are reduced, the area occupied by the shield becomes large while the electrical gap is ensured. When the ribs of the shield case main body are increased, the difference in the electrical clearance between each position of the shield case main body and the cylindrical high-voltage device is reduced, but at this time, the assembly of the shield case becomes difficult. The number of ribs of the shield case main body needs to balance the difference in electrical clearance between the footprint of the shield case and the cylindrical high-voltage equipment and the difficulty in assembling the shield case. When the ribs of the shield case main body are odd, the shape of the reinforcing frame needs to be changed adaptively.
Claims (10)
1. The electromagnetic shielding cover for the electrical equipment is characterized by comprising a cylindrical shielding cover main body and a top cover body fixed at an opening at the top of the shielding cover main body;
the shielding case main body is formed by sequentially splicing a plurality of side shielding plates along the circumferential direction, and side plate folded edges are arranged at the side edges of each side shielding plate in the horizontal direction and are used for fixedly connecting the adjacent side shielding plates;
the top cover body is formed by sequentially splicing a plurality of top shielding plates, the two sides of each top shielding plate in the horizontal direction are bevel edges, and the bevel edges of each top shielding plate are provided with top plate folded edges which are used for fixedly connecting the adjacent top shielding plates;
the number of the top shielding plates is equal to that of the side shielding plates, and the outer side edge of each top shielding plate in the horizontal direction is aligned with the top edge of the corresponding side shielding plate.
2. The electrical equipment electromagnetic shield according to claim 1, wherein the side plate flaps and/or the top plate flaps are provided with fastener through-holes, and adjacent side plate flaps and/or adjacent top plate flaps are fixedly connected by fasteners passing through the fastener through-holes.
3. The electrical equipment electromagnetic shield according to claim 1 or 2, wherein the side shield plate is provided with a side plate top folded edge at the top vertical edge, the top shield plate is provided with a top plate bottom folded edge at the bottom vertical edge, and the side plate top folded edge and the top plate bottom folded edge are fixed to each other to realize the fixed connection between the shield cover main body and the top cover body.
4. The electrical equipment electromagnetic shield according to claim 1 or 2, wherein the top shield plate is a trapezoidal plate, the top shield body has an opening in the middle, a polygonal top seal plate for sealing the opening in the middle of the top shield body is provided at the opening in the middle of the top shield body, and the polygonal top seal plate has cable through holes.
5. The electrical equipment electromagnetic shield of claim 4, wherein the top shield body is of a truncated pyramid type configuration with the small end facing upward.
6. The electrical equipment electromagnetic shield according to claim 1 or 2, wherein the vertical bottom edge of the side shield plate is provided with a side plate bottom folded edge, and the side plate bottom folded edge is used for fixing the shield main body on a shield fixing base.
7. An electrical equipment electromagnetic shield according to claim 1 or 2, wherein at least one of the side shield panels and/or at least one of the top shield panels is provided with a service opening, and a service closing panel for closing the service opening is provided at the service opening.
8. The electrical equipment electromagnetic shield according to claim 1 or 2, wherein a reinforcing frame is arranged at the top opening of the shield main body, and the reinforcing frame is fixedly connected with at least two side shield plates respectively so as to improve the structural strength of the shield main body.
9. The electrical equipment electromagnetic shield according to claim 8, wherein the shield main body is formed by surrounding an even number of side shield plates, the reinforcing frame comprises a cross beam and a longitudinal beam, the cross beam is fixedly connected with two oppositely arranged side shield plates respectively, the two cross beams are arranged in parallel, and the two cross beams are fixedly connected through the longitudinal beam to improve the structural strength of the reinforcing frame.
10. The electrical equipment electromagnetic shield according to claim 1 or 2, wherein the number of the side shield plates and the top shield plate is six or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920815134.7U CN210671169U (en) | 2019-05-31 | 2019-05-31 | Electromagnetic shielding cover for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920815134.7U CN210671169U (en) | 2019-05-31 | 2019-05-31 | Electromagnetic shielding cover for electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210671169U true CN210671169U (en) | 2020-06-02 |
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ID=70821296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920815134.7U Active CN210671169U (en) | 2019-05-31 | 2019-05-31 | Electromagnetic shielding cover for electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210671169U (en) |
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2019
- 2019-05-31 CN CN201920815134.7U patent/CN210671169U/en active Active
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