Novel insulating cover for high-voltage switch cabinet

Abstract

The utility model relates to a novel insulation cover used for a high voltage switch cabinet, comprising a cover body and a wiring portion, the cover body comprises a base plate and side plates arranged on two sides of the base plate, the base plate and the side plates form an insulation cavity, the wiring portion is arranged in the insulation cavity, the cover body is used for connecting a local electrified body in the switch cabinet, the base plate is provided with an opening portion, and the opening portion is provided with a plurality of through holes. And the opening part is arranged on a moving path of the movable lapping equipment and is used for opening the lapping equipment to enter and exit from the insulating cavity. According to the utility model, the electrified bodies are arranged in the internal insulation cavity of the cover body, so that the electrified bodies are separated by the cover body, and short circuit and safety accidents caused by too small distance between the electrified bodies are avoided; the position where the cover body interferes with the motion path of the movable lap joint equipment is provided with the opening part, so that the movable lap joint equipment can smoothly enter and exit from the insulation cavity to be matched with the local electrified body.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -voltage switch cabinet technical field, concretely relates to a novel insulating cover for high -voltage switch cabinet. BACKGROUND

[0002] High-voltage switch cabinet refers to the electric appliance product for power system generation, transmission, distribution, electric energy conversion and consumption, which plays the role of on-off, control or protection, and its voltage grade is usually between 3.6kV and 40.5kV. High-voltage switch cabinet is a complete high-voltage distribution device composed of high-voltage circuit breaker, high-voltage load switch, high-voltage contactor, high-voltage fuse, high-voltage disconnecting switch, high-voltage grounding switch, high-voltage transformer and other high-voltage electrical equipment, and its related control, measurement, protection, adjustment device, internal connecting piece, auxiliary part, shell and support part. These devices are combined in the grounded metal shell according to the wiring requirements of the primary system diagram, and the internal space takes air, insulating gas or solid insulating material as the insulating medium.

[0003] The structure of high-voltage switch cabinet is generally similar, which is mainly composed of multiple parts. First of all, the busbar room is the key area for carrying and distributing electric energy, and the thick busbar is usually arranged inside to ensure smooth transmission of current. The circuit breaker room is one of the core parts of the whole switch cabinet, in which the important circuit breaker equipment is installed. The circuit breaker plays a key role in control and protection in the circuit, which can quickly cut off the circuit in case of failure to ensure the safe operation of the power system.

[0004] Electrical gap refers to the shortest spatial distance measured between two conductive parts or between the conductive part and the device protection interface. That is, under the condition of ensuring stable and safe electrical performance, the shortest distance through which insulation can be achieved by air.

[0005] In the commonly used 3.6kV~40.5 kV AC metal-enclosed switchgear and control equipment in the prior art, the shortest distance through which insulation can be achieved by air needs to be reserved between two electrically conductive conductive parts or between the conductive part and the device protection interface, which is called electrical gap. In actual use, in high-altitude areas, the higher the altitude, the thinner the air, and the insulation performance of air will decrease with the increase of altitude, so the electrical gap needs to be corrected, and the distance of the required electrical gap needs to be increased.

[0006] As high-voltage switch cabinet tends to be more and more miniaturized, the space distance inside the switch cabinet is limited, and the withstand voltage performance of the live parts often needs to be increased by composite insulation, and the common composite insulation method is to wrap by insulation plates or insulation materials, and the existing industry specifications and standards have stipulated that the spacer plate made of SMC and other materials is not allowed to be used, so the vulcanized body wrapping method is often used. However, if the live parts are connected by lapping connection, such as the grounding switch moving knife grounding protection mode, the vulcanized body wrapping composite insulation cannot be used, and the lapping and dismounting of the primary conducting rail will also be affected. Practical new type

[0007] The first aspect of the utility model is to solve the scene that the electrical gap between the partial live parts in the high-voltage switch cabinet and the phase-to-ground does not meet the standard requirements, and the technical problem that the way of setting the vulcanized body coating to improve the withstand voltage performance of the live parts cannot be applied to the movable lapping connection is provided. A new type of insulation cover for high-voltage switch cabinet is provided, and the position of the movable lapping equipment is reserved on the cover body, and a plurality of different mounting methods are set. Not only can the withstand voltage performance of the live parts be improved, but also the interference between the movable lapping part and the cover body can be avoided. The main idea is that:

[0008] A new type of insulation cover for high-voltage switch cabinet, comprising a cover body and a wiring part, the cover body comprising a bottom plate and side plates arranged on both sides of the bottom plate, the bottom plate and the side plates forming an insulation cavity, the wiring part being arranged inside the insulation cavity, the cover body being used for connecting the partial live parts in the switch cabinet, the bottom plate being provided with an opening part, the opening part being arranged in the path of the movable lapping equipment, and the opening part being used for the movable lapping equipment to enter and exit the insulation cavity. By arranging the live parts in the internal insulation cavity of the cover body, the plurality of live parts are separated by the cover body, so that the short circuit and safety accidents caused by the too small electrical gap between the live parts are avoided, and when the local fixed live parts are lapped with the movable live parts and components, the opening part is arranged at the position where the movement path of the cover body and the movable live parts and components interfere, so that the movable live parts and components can smoothly enter and exit the insulation cavity and cooperate with other live parts and live components.

[0009] Preferably, the cover body is a U-shaped insulation structure made of an epoxy resin environmentally friendly material, and the thickness of the cover body is 6-8mm. The cover body is set to 6-8mm, so that the cover body can withstand at least forty thousand volts of withstand voltage, and can meet the withstand voltage standard requirements of most use scenarios.

[0010] Preferably, the cover body is an integral structure, and the cover body is provided with reinforcing ribs. The cover body is formed in a U-shaped structure by a bottom plate and a side plate. The integral forming of the cover body makes the overall strength higher, and cracks are less likely to occur at the connection position of the bottom plate and the side plate. The cover body is prone to deformation during use due to its thin wall material. The reinforcing ribs are provided to strengthen the strength of the cover body and ensure the solidification of the shape of the cover body.

[0011] The second aspect of the utility model aims to solve the technical problem of insufficient space for the partial live body to be connected with the high-voltage cable. Further, the side plate comprises a reserved part, which is arranged on the side plate at one side of the partial live body. The reserved part is used to reserve space for the cable of the partial live body to enter. When the cable of the partial live body is connected at one end of the cover body, the cable is likely to be inclined. The cable is arranged to enter the cover body from the position provided with the reserved part, so that the cables arranged on both sides can be connected smoothly.

[0012] The third aspect of the utility model aims to solve the technical problem of insufficient creepage distance in the insulating cover. Further, the connecting part comprises a boss and a support fixing hole formed in the boss. The support fixing hole is used to be fixedly connected with the partial live body by a bolt. When the insulating material around the partial live body is polarized, the insulating material is likely to be electrically broken down. The boss is arranged to avoid the electric breakdown of the insulating cover and the strength problem of the installation support of the insulating cover.

[0013] The fourth aspect of the utility model aims to solve the technical problem that the height space of the insulating cover is insufficient to accommodate other live components when the live body in the insulating cover is connected with other live components. Further, the utility model also comprises a mounting rack, which is arranged between the connecting part and the partial live body. The mounting rack is used to increase the distance between the cover body and the partial live body. The mounting rack is arranged between the connecting part of the cover body and the partial live body arranged on the connecting row. The cover body is indirectly installed by the mounting rack. The installation position of the cover body is increased on the basis of the mounting rack. The height of the insulating cavity is increased to accommodate other high-voltage live components.

[0014] Preferably, the mounting rack comprises two connecting plates and an adjusting part. The two connecting plates are arranged in parallel on both sides of the adjusting part. The connecting plates are used to connect the partial live body and the connecting part, respectively. The adjusting part is used to adjust the distance between the connecting plates. The height of the adjusting part is adjusted to adjust the distance between the connecting plates and the height between the cover body and the partial live body. The cover body can accommodate more high-voltage live components.

[0015] Preferably, the mounting rack is of U-shaped structure, the adjusting part is arranged at the side of the connecting plate, and the adjusting part and the connecting plate form a mounting position for mounting the conductive auxiliary part. Arranging the adjusting part at the side of the connecting plate can make the mounting rack form a U-shaped structure with the mounting position, so that the middle position of the mounting rack forms the largest mounting position. When the local electrified body needs to be connected to other equipment through the conductive auxiliary part, the conductive auxiliary part can be accommodated in the mounting rack, and the mounting of the conductive auxiliary part is facilitated.

[0016] The utility model discloses the beneficial effect lies in:

[0017] The utility model discloses the beneficial effect lies in: DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the utility model.

[0019] Figure 2 It is the structure front view of the utility model.

[0020] Figure 3 It is the structure side view of the utility model.

[0021] Figure 4 It is the structure schematic diagram of the utility model embodiment 1 Figure 1 .

[0022] Figure 5 It is the structure schematic diagram of the utility model embodiment 1 Figure 2 .

[0023] Figure 6 It is the structure schematic diagram of the utility model embodiment 2.

[0024] Figure 7 It is the structure schematic diagram of the utility model embodiment 4.

[0025] Figure 8 It is the structure schematic diagram of the utility model mounting rack.

[0026] The figure mark includes: 1, cover body;11, bottom plate;111, opening part;12, side plate;121, reservation part;13, reinforcing rib;2, wiring part;21, support fixed hole;3, insulation cavity;4, mounting rack;41, connecting plate;42, adjusting part;43, mounting position;5, wire auxiliary part. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0028] It should be noted that all actions involving the acquisition of signals, information, or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where the application is located, and with the authorization granted by the owner of the relevant device.

[0029] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequence or importance.

[0030] Example 1

[0031] like Figures 1-3 As shown, this embodiment of a novel insulating cover for a high-voltage switchgear includes a cover body 1 and a wiring part 2. The cover body 1 includes a base plate 11 and side plates 12 disposed on both sides of the base plate 11. The base plate 11 and the side plates 12 constitute an insulating cavity 3. The wiring part 2 is disposed inside the insulating cavity 3. The cover body 1 is used to connect local live parts inside the switchgear. The base plate 11 is provided with an opening 111, which is opened in the path of the movable connecting equipment. The opening 111 is used to allow the connecting equipment to enter and exit the insulating cavity 3.

[0032] By placing the charged body inside the insulating cavity 3 of the cover 1, multiple charged bodies are separated by the cover 1, avoiding short circuits and safety accidents caused by the small distance between the charged bodies. Furthermore, when a local charged body is connected to the movable connecting device, an opening 111 is made at the position where the movement path of the cover 1 and the movable connecting device interferes, so that the movable connecting device can smoothly enter and exit the insulating cavity 3 to cooperate with the local charged body.

[0033] In this embodiment, the enclosure 1 is a semi-frame insulating structure made of environmentally friendly epoxy resin material, and the thickness of the enclosure 1 is 6-8mm. Setting the thickness of the enclosure 1 to 6-8mm ensures that the enclosure can withstand a voltage of at least 40,000 volts, which can meet the voltage withstand requirements of most application scenarios.

[0034] like Figure 1 As shown, the cover 1 is a one-piece molded structure, and the cover 1 is provided with reinforcing ribs 13.

[0035] The cover body 1 is formed in a U-shaped structure by the bottom plate 11 and the side plate 12. The cover body 1 is integrally formed, so that the overall strength is higher, and cracks are less likely to occur at the connection position of the bottom plate 11 and the side plate 12. The cover body 1 is made of thin-walled material and is prone to deformation during use. The reinforcing ribs 13 are arranged to strengthen the strength of the cover body 1 and ensure the solidification of the shape of the cover body 1.

[0036] As shown in Figures 4-5 , the moving blade of the grounding switch of the partial live body is overlapped in the embodiment. The grounding switch is a mechanical switch device for intentionally grounding the circuit. The opening and closing paths of the moving blade of the grounding switch pass through the opening part 111 of the cover body 1. Figure 4 For the opening state of the moving blade of the grounding switch, the moving blade of the grounding switch is rotated to the direction of the partial live body to Figure 5 , Figure 5 For the closing state of the moving blade of the grounding switch.

[0037] Embodiment 2

[0038] As shown in Figure 6 , the side plate 12 of the embodiment includes a reserved part 121. The reserved part 121 is arranged on the side plate 12 of the partial live body. The reserved part 121 is used to reserve space for the cable of the partial live body.

[0039] When the partial live body is connected at one end of the cover body 1, the high-voltage cable is straight and inclined. The cable enters the inside of the cover body 1 from the position where the reserved part 121 is arranged. The cables arranged on both sides can be connected smoothly.

[0040] As shown in Figure 6 , the high-voltage cable of the embodiment is a three-phase cable. The three-phase cable cooperates with the insulating cover. The three-phase cable includes A phase, B phase and C phase. The B phase is arranged at the middle position, and the A phase and the C phase are distributed on both sides. The cover body 1 provides reserved space for the A phase and the C phase through the reserved part 121.

[0041] The reserved part 121 of the embodiment is arranged on the side plate 12 with two different heights. The short side of the side plate 12 constitutes the reserved part 121.

[0042] Embodiment 3

[0043] As shown in Figures 1-6 , the wiring part 2 of the embodiment includes a boss and a support fixing hole 21 arranged on the boss. The support fixing hole 21 is used to connect the partial live body through bolts.

[0044] When the insulating material around the partial live body is polarized, the insulating material presents a live phenomenon. The boss is arranged to avoid the live area of the insulating cover.

[0045] Example 4

[0046] like Figures 4-8 As shown, a novel insulating cover for a high-voltage switchgear also includes a mounting bracket 4. The mounting bracket 4 is disposed between the wiring section 2 and the locally live part, and is used to increase the distance between the cover 1 and the locally live part. By placing the mounting bracket 4 between the wiring section 2 of the cover 1 and the locally live part mounted on the terminal block, the cover 1 is indirectly installed through the mounting bracket 4. This raises the installation position of the cover 1 based on the mounting bracket 4, thereby increasing the height of the insulating cavity 3 to accommodate the connecting equipment.

[0047] like Figure 8 As shown, the mounting bracket 4 includes two connecting plates 41 and an adjustment part 42. The two connecting plates 41 are installed in parallel on both sides of the adjustment part 42. The connecting plates 41 are used to connect the local live parts and the wiring part 2 respectively. The adjustment part 42 is used to adjust the distance between the connecting plates 41.

[0048] By providing the adjustment part 42, the distance between the connecting plates 41 can be adjusted, thereby adjusting the height between the cover 1 and the local charged body, so that the cover 1 can accommodate more overlapping equipment.

[0049] The mounting bracket 4 has a U-shaped structure, and the adjustment part 42 is located on the side of the connecting plate 41. The adjustment part 42 and the connecting plate 41 constitute the mounting position 43, which is used to install the conductive auxiliary component 5.

[0050] By placing the adjustment part 42 on the side of the connecting plate 41, the mounting frame 4 can form a U-shaped structure with a mounting position 43, so that the middle position of the mounting frame 4 forms the largest mounting position. When a local live part needs to be connected to other equipment through the conductive auxiliary part 5, the conductive auxiliary part 5 can be accommodated in the mounting frame 4, which facilitates the installation of the conductive auxiliary part 5.

[0051] like Figure 7 As shown, this embodiment is an insulating cover for a high-voltage fuse. The locally charged part is installed above the insulator. By adjusting the adjustment part 42 to a suitable height, the conductive auxiliary part 5 is connected to the locally charged part by conductive screws. The conductive auxiliary part 5 is made of conductive metal, so that the locally charged part is connected to the high-voltage fuse through the conductive auxiliary part 5.

[0052] like Figure 8As shown, the adjusting part 42 of the embodiment comprises a first adjusting part and a second adjusting part, a guide groove is formed in the first adjusting part, the second adjusting part is inserted into the first adjusting part through the guide groove, so that the first adjusting part and the second adjusting part are connected through sliding fit. The two connecting plates 41 are respectively installed in the first adjusting part and the second adjusting part, so that the distance between the two connecting plates can be adjusted during the sliding adjustment of the first adjusting part and the second adjusting part. In order to stably keep the adjusted position between the first adjusting part and the second adjusting part, at least one threaded hole is arranged on the side edge of the first adjusting part, the threaded hole penetrates through the first adjusting part to the guide groove, and the first adjusting part is installed in the threaded hole to abut against the second adjusting part arranged in the guide groove, so that the first adjusting part and the second adjusting part can be stably supported through the fastening connection of the bolt.

[0053] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme known in the art are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A new type of insulation cover for high voltage switchgear, characterized by: The utility model relates to a kind of local electrified body connecting device, including cover (1) and wiring part (2), cover (1) includes bottom plate (11) and the side plate (12) being arranged in the two sides of bottom plate (11), the bottom plate (11) and side plate (12) form insulating cavity (3), wiring part (2) is arranged inside insulating cavity (3), cover (1) is used to connect the local electrified body in switch cabinet, bottom plate (11) is provided with opening part (111), opening part (111) is opened in the path of movable lapping equipment movement, opening part (111) is used to open lapping equipment to enter and exit insulating cavity (3).

2. A novel insulating cover for high voltage switchgear as claimed in claim 1, wherein: The cover (1) is a U-shaped insulation structure made of epoxy resin environmentally friendly material, and the thickness of the cover (1) is 6-8 mm.

3. A novel insulating cover for high voltage switchgear as claimed in claim 2, wherein: The cover (1) is an integral molding structure, and the cover (1) is provided with reinforcing ribs (13).

4. A novel insulating cover for high voltage switchgear as claimed in claim 1, wherein: The side plate (12) includes a reserved part (121), which is arranged on the side plate (12) on one side of the local electrified body. The reserved part (121) is used to reserve space for the local electrified body.

5. A novel insulating cover for high voltage switchgear as claimed in claim 1, wherein: The wiring part (2) includes a boss and a support fixing hole (21) opened on the boss, and the support fixing hole (21) is used to connect the local electrified body through bolts.

6. A novel insulating cover for high voltage switchgear as claimed in claim 1, wherein: The mounting rack (4) is arranged between the wiring part (2) and the local electrified body, and is used to increase the distance between the cover (1) and the local electrified body. The mounting rack (4) includes two connecting plates (41) and an adjusting part (42). The two connecting plates (41) are parallelly arranged on both sides of the adjusting part (42), and are used to connect the local electrified body and the wiring part (2) respectively. The adjusting part (42) is used to adjust the distance between the two connecting plates (41).

7. A novel insulating cover for high voltage switchgear as claimed in claim 6, wherein: The mounting rack (4) is a U-shaped structure, and the adjusting part (42) is arranged on the side of the connecting plate (41). The adjusting part (42) and the connecting plate (41) form a mounting position (43), which is used to mount a conductive auxiliary part (5).

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