A voltage control cabinet and voltage control device for protector testing

Abstract

The application discloses a voltage control cabinet for protector test and a voltage control device, and belongs to the technical field of voltage control equipment.The device comprises a cabinet body, a preset mounting position for mounting a voltage controller body is arranged in the cabinet body, and a plurality of first heat dissipation through holes are arranged on the cabinet body; an electromagnetic shielding cover is arranged between the preset mounting position and the first heat dissipation through holes, the electromagnetic shielding cover and the cabinet body enclose an electromagnetic shielding space, a ventilation channel is arranged between the electromagnetic shielding cover and the cabinet body, and the ventilation channel is in communication with the electromagnetic shielding space and the first heat dissipation through holes; a moving mechanism comprises a driving part and a moving part, the driving part is in transmission connection with the moving part, the moving part is arranged in the interior of the cabinet body, the electromagnetic shielding cover is arranged on the moving part, and the transmission of the driving part is used for driving the electromagnetic shielding cover to move close to or away from the first heat dissipation through holes, so that the electromagnetic shielding space is enlarged or reduced. The problem that the prior art cannot simultaneously achieve good heat dissipation and good electromagnetic shielding is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of voltage control device, and particularly relates to a voltage control cabinet for protector test and a voltage control device. BACKGROUND

[0002] The voltage protection test is a test for evaluating the voltage resistance capability of an electrical device, system or apparatus. In a power system, various power transformation devices in a substation, such as transformers and switch cabinets, need to be subjected to voltage protection tests to ensure that the devices can withstand various overvoltages that may occur in the power grid and guarantee the stability and safety of power transmission. Generally, voltage control devices are placed in voltage cabinets. At present, during the operation of the voltage control device, a large amount of heat is emitted around the device, which will affect the internal components of the device if not dissipated in time. In addition, an electromagnetic field will be generated during the operation of the voltage control device, which will interfere with the normal operation of the device when the electromagnetic field is too large.

[0003] In the existing voltage control device, in order to achieve electromagnetic shielding effect, few or no heat dissipation through holes are provided, so that a large amount of heat accumulates inside the device, affecting the components. However, too many heat dissipation through holes will weaken the electromagnetic shielding effect. In addition, different voltage controllers are in different working conditions, and the requirements for heat dissipation and electromagnetic shielding are different. Therefore, it is a problem to be solved how to balance good heat dissipation and good electromagnetic shielding in the voltage control cabinet and the control device. SUMMARY

[0004] The present application provides a voltage control cabinet for protector test and a voltage control device, which aims to solve the problem that the prior art cannot balance good heat dissipation and good electromagnetic shielding.

[0005] The present application provides a voltage control cabinet for protector test, which comprises:

[0006] A cabinet body, wherein a preset mounting position for mounting a voltage controller body is arranged in the cabinet body, and a plurality of first heat dissipation through holes are arranged on the cabinet body;

[0007] An electromagnetic shielding cover, which is arranged between the preset mounting position and the first heat dissipation through holes, and which forms an electromagnetic shielding space together with the cabinet body, wherein a ventilation channel is arranged between the electromagnetic shielding cover and the cabinet body, and the ventilation channel is in communication with the electromagnetic shielding space and the first heat dissipation through holes;

[0008] The moving mechanism comprises a driving part and a moving part, the driving part is in transmission connection with the moving part, the moving part is arranged in the interior of the cabinet body, the electromagnetic shielding cover is mounted on the moving part, and the transmission of the driving part is used to drive the electromagnetic shielding cover to move close to or away from the first heat dissipation through hole, so that the electromagnetic shielding space becomes larger or smaller.

[0009] In some embodiments of the first aspect, a second heat dissipation through hole is arranged on the cabinet body and can be opened and closed, the second heat dissipation through hole is arranged on the ventilation channel, and the second heat dissipation through hole is in communication with the ventilation channel.

[0010] In some embodiments of the first aspect, a plurality of second heat dissipation through holes are arranged on the wall of the cabinet body.

[0011] A cover plate is reversibly connected to the outer wall of the voltage control cabinet, and the cover plate is reversibly covered on the plurality of second heat dissipation through holes.

[0012] An electric telescopic rod is connected to the inner side of the cover plate, and the electric telescopic rod is used to drive the cover plate to be reversed.

[0013] In some embodiments of the first aspect, a through rod slot is arranged on the wall of the cabinet body, and a sliding slot is arranged on the cover plate.

[0014] The slotting axis of the through rod slot and the slotting axis of the sliding slot are the same as the moving direction of the moving part.

[0015] One end of the electric telescopic rod is mounted on the moving part, and the other end of the electric telescopic rod passes through the through rod slot and is slidably mounted in the sliding slot.

[0016] In some embodiments of the first aspect, at least one side of the electromagnetic shielding cover is provided with an opening, and the opening is in communication with the ventilation channel and the electromagnetic shielding space.

[0017] The wall adjacent to the side of the cabinet body where the opening is arranged is not provided with the second heat dissipation through hole.

[0018] In some embodiments of the first aspect, the preset mounting position is arranged at the bottom of the cabinet body.

[0019] The ventilation channel is vertically arranged.

[0020] In the direction from the bottom of the cabinet body to the top of the cabinet body, the second heat dissipation through hole and the first heat dissipation through hole are arranged in sequence.

[0021] In some embodiments of the first aspect, the driving part comprises a driving motor and a reciprocating screw rod, the driving motor is in transmission connection with the reciprocating screw rod, and the axis direction of the reciprocating screw rod is vertically arranged.

[0022] The moving part comprises a lifting block and a lifting frame; the lifting block is slidingly installed on the reciprocating wire rod, the lifting frame is fixedly connected with the lifting block, the lifting block is also used for being fixedly connected with an electric telescopic rod, the lifting frame is slidingly connected with the cabinet body, and the lifting frame is detachably connected with the electromagnetic shielding cover.

[0023] In some embodiments of the first aspect, the moving part further comprises a limiting block and a limiting spring;

[0024] The lifting frame is provided with a limiting groove, and the outer wall of the electromagnetic shielding cover is provided with a limiting strip;

[0025] One end of the limiting groove is open, the open end of the lifting frame is provided with an arc-shaped through groove, and the limiting block covers the open end of the lifting frame;

[0026] The limiting block is provided with a latch adjacent to one side of the limiting groove, the latch is inserted into the arc-shaped through groove, and the latch and the end portion of the arc-shaped through groove are compressed by the limiting spring.

[0027] In some embodiments of the first aspect, the second heat dissipation through hole has a smaller hole diameter than the first heat dissipation through hole, and the second heat dissipation through hole has a higher hole arrangement density than the first heat dissipation through hole.

[0028] Another aspect of the present application provides a voltage control device for a protector test, comprising:

[0029] The voltage control cabinet of the first aspect;

[0030] The voltage controller body is arranged on the preset mounting position.

[0031] From the above technical solutions, the present application has the following advantages:

[0032] The embodiment provides a voltage control cabinet for protector testing, wherein an electromagnetic shielding space is enclosed by an electromagnetic shielding cover and the cabinet body, a preset mounting position is located in the electromagnetic shielding space, and the electromagnetic shielding space can provide a good electromagnetic shielding effect for a voltage controller; the electromagnetic shielding cover is arranged between the first heat dissipation through hole and the preset mounting position, the electromagnetic shielding space can be communicated with the first heat dissipation through hole through a ventilation channel, and heat in the electromagnetic shielding space can be dissipated; the electromagnetic shielding cover is connected with the moving part of the moving mechanism, and the electromagnetic shielding cover can be moved close to or away from the first heat dissipation through hole by the movement of the moving mechanism, so that the electromagnetic shielding space is enlarged or reduced; therefore, the electromagnetic shielding effect and the heat dissipation effect can be flexibly adjusted during application, so that the voltage control cabinet can have both the electromagnetic shielding effect and the heat dissipation effect; when the heat dissipation effect needs to be improved, the electromagnetic shielding cover is moved close to the first heat dissipation through hole to enlarge the electromagnetic shielding space, so that the heat dissipation is more sufficient and the heat dissipation effect is good; the electromagnetic shielding cover is always located between the heat dissipation through hole and the preset mounting position, so that the heat dissipation effect is improved while the electromagnetic shielding is considered; when the electromagnetic shielding effect needs to be improved, the electromagnetic shielding cover is moved close to the first heat dissipation through hole to reduce the electromagnetic shielding space, so that the number of electromagnetic wave reflections is increased and the absorption efficiency is improved; the electromagnetic shielding space is always communicated with the first heat dissipation through hole, so that the electromagnetic shielding effect is improved while the heat dissipation is considered, and the problem that the prior art cannot have both good heat dissipation and good electromagnetic shielding is solved. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0034] Figure 1 A structural schematic diagram of a voltage control device for protector testing provided by the embodiment of the present application;

[0035] Figure 2 A sectional structure schematic diagram of a voltage control cabinet for protector testing provided by the embodiment of the present application;

[0036] Figure 3 A local enlarged sectional structure schematic diagram of a voltage control cabinet for protector testing provided by the embodiment of the present application;

[0037] Figure 4 A structural schematic diagram of a cabinet body provided by the embodiment of the present application;

[0038] Figure 5 A structural schematic diagram of a cover plate provided by the embodiment of the present application;

[0039] Figure 6 A structural schematic diagram of an electromagnetic shielding cover provided for an embodiment of the present application;

[0040] Figure 7 A structural schematic diagram of a lifting frame provided for an embodiment of the present application;

[0041] Figure 8 A structural schematic diagram of a limiting block provided for an embodiment of the present application.

[0042] Reference signs:

[0043] 1, cabinet body; 10, preset mounting position; 11, first heat dissipation through hole; 12, second heat dissipation through hole; 13, cover plate; 130, sliding groove; 14, electric telescopic rod; 15, through rod through groove;

[0044] 2, electromagnetic shielding cover; 20, electromagnetic shielding space; 21, ventilation channel; 22, opening; 23, limiting strip;

[0045] 3, moving mechanism; 30, driving part; 300, driving motor; 301, reciprocating screw rod; 31, moving part; 310, lifting block; 311, lifting frame; 3110, limiting groove; 3111, arc-shaped through groove; 312, limiting block; 3120, limiting bolt; 313, limiting spring; 314, screw rod seat; 315, first connecting seat; 316, second connecting seat; 317, T-shaped block;

[0046] 4, voltage controller body. DETAILED DESCRIPTION

[0047] The embodiment of the present application provides a voltage control cabinet for protector test and a voltage control device, and aims to solve the technical problem that the prior art cannot simultaneously achieve good heat dissipation and good electromagnetic shielding.

[0048] In order to make the invention purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0049] Please refer to Figures 1 to 8 The present application provides a voltage control cabinet for protector test, which comprises:

[0050] The cabinet body 1 is provided with a preset mounting position 10 for mounting the voltage controller body 4, and the cabinet body 1 is provided with a plurality of first heat dissipation through holes 11.

[0051] The electromagnetic shield 2 is located in the cabinet body 1 and between the preset installation position 10 and the first heat dissipation through hole 11, the electromagnetic shield 2 and the cabinet body 1 enclose the electromagnetic shield space 20, and a ventilation channel 21 is left between the electromagnetic shield 2 and the cabinet body 1, the ventilation channel 21 is in communication with the electromagnetic shield space 20 and the first heat dissipation through hole 11.

[0052] The moving mechanism 3 is arranged in the interior of the cabinet body 1, the moving part 31 of the moving mechanism 3 is arranged in the interior of the cabinet body 1, the electromagnetic shield 2 is arranged on the moving part 31, and the moving part 31 is used to drive the electromagnetic shield 2 to move close to or away from the first heat dissipation through hole 11, so that the electromagnetic shield space 20 is enlarged or reduced.

[0053] The electromagnetic shield space 20 is a space enclosed by the electromagnetic shield 2, the side wall and the bottom plate of the cabinet body 1, the longitudinal section shape of the space is approximately "mouth" or "convex", and the size of the electromagnetic shield space 20 is adjusted by the moving mechanism 3.

[0054] In the working process of the embodiment, as shown in the figure, Figure 1 When the voltage controller body 4 is installed and works, the driving part 30 is started to drive the electromagnetic shield 2 to move to a suitable position with the moving part 31, the electromagnetic radiation of the voltage controller body 4 is absorbed by the electromagnetic shield 2 and the cabinet body 1, and the heat of the voltage controller body 4 is transmitted to the outside of the first heat dissipation through hole 11 through the ventilation channel 21.

[0055] In a specific application scenario, when the heat dissipation effect needs to be improved, the electromagnetic shield 2 is moved close to the first heat dissipation through hole 11 to increase the electromagnetic shield space 20, the heat of the voltage controller body 4 is radiated and dissipated more fully in the electromagnetic shield space 20, the heat dissipation effect is good, and because the electromagnetic shield 2 is always located between the heat dissipation through hole and the preset installation position 10, the electromagnetic radiation of the voltage controller body 4 can be absorbed by the electromagnetic shield 2 and the cabinet body 1, so that the heat dissipation effect is improved while the electromagnetic shielding effect is considered.

[0056] In another specific application scenario, when the electromagnetic shielding effect needs to be improved, the electromagnetic shield 2 is moved away from the first heat dissipation through hole 11 to reduce the electromagnetic shield space 20, the electromagnetic radiation of the voltage controller body 4 increases the reflection times in the electromagnetic shield space 20, and the absorption efficiency of the electromagnetic shield 2 and the cabinet body 1 is improved, and because the electromagnetic shield space 20 is in communication with the first heat dissipation through hole 11 through the ventilation channel 21, the heat of the voltage controller body 4 can be dissipated outward through the ventilation channel 21, so that the electromagnetic shielding effect is improved while the heat dissipation effect is considered.

[0057] From the above working process and application scenarios, the voltage controller body 4 will always heat and emit electromagnetic radiation outward, the electromagnetic shielding cover 2 can flexibly adjust the position through the movement of the moving part 31, flexibly adjust the electromagnetic shielding effect and the heat dissipation effect, so that the voltage control cabinet considers the electromagnetic shielding effect and the heat dissipation effect, and better adapts to the fluctuation under different voltage controllers and different working conditions.

[0058] Compared with the prior art, the advantages of the embodiment are that: first, the functions are diverse, considering the electromagnetic shielding function and the heat dissipation function, the electromagnetic shielding and heat dissipation can be realized at the same time when the voltage controller body 4 works, avoiding some prior arts that only have electromagnetic shielding function or only have heat dissipation function, and only realize electromagnetic shielding or heat dissipation function, and the function is single; second, the electromagnetic shielding effect and the heat dissipation effect can be flexibly adjusted, considering good heat dissipation and good electromagnetic shielding, and the adaptability is strong, avoiding some prior arts that can realize electromagnetic shielding function and heat dissipation function, but the electromagnetic shielding effect and the heat dissipation effect are constant, and the electromagnetic shielding and heat dissipation cannot be flexibly adjusted.

[0059] In some specific embodiments, as shown in Figure 2 , further provided is the realizable structure of the cabinet body 1, the cabinet body 1 includes a cabinet door and a cabinet body, the front side of the cabinet body is hingedly connected with the cabinet door, and in specific implementation, the cabinet door is flipped open to take out the voltage controller body 4 or maintain the equipment in the cabinet body 1.

[0060] In the embodiment, a handle is arranged on the cabinet door, and a plurality of supporting legs are fixedly connected to the bottom corners of the cabinet body, and the supporting legs can support the cabinet body 1.

[0061] In some specific embodiments, as shown in Figure 2 and Figure 4 , further provided is the realizable structure of the first heat dissipation through hole 11, the first heat dissipation through hole 11 is arranged adjacent to one side of the top of the cabinet body 1, and the preset mounting position 10 is arranged adjacent to one side of the bottom of the cabinet body 1, and the electromagnetic shielding cover 2 is located between the first heat dissipation through hole 11 and the preset mounting position 10, so that the ventilation channel 21 is vertically arranged, and in specific implementation, the heat of the voltage controller body 4 on the preset mounting position 10 can be transmitted upward in the vertical ventilation channel 21 to the first heat dissipation through hole 11, and the heat dissipation effect is good.

[0062] In the embodiment, as shown in Figure 4 , a plurality of first heat dissipation through holes 11 are arranged on opposite sides of the cabinet body 1, the plurality of first heat dissipation through holes 11 on the same side are regularly and spacedly arranged, the openings of the first heat dissipation through holes 11 all face the preset mounting position 10, that is, the opening axes of the first heat dissipation through holes 11 are inclined to the preset mounting position 10, and the first heat dissipation through hole 11 is a rectangular hole.

[0063] In some specific embodiments, as shown in Figure 2 and Figure 4 To improve the effect of ventilation and heat dissipation, the cabinet body 1 is provided with a second heat dissipation through hole 12 which can be opened and closed. The second heat dissipation through hole 12 is arranged on the ventilation channel 21 and is in communication with the ventilation channel 21. In specific implementation, the heat in the electromagnetic shielding space 20 is transferred outward through the ventilation channel 21. When it is necessary to improve the ventilation and heat dissipation, a part of the heat can be transferred outward through the second heat dissipation through hole 12 after the second heat dissipation through hole 12 is opened, and the remaining part of the heat can be transferred outward through the first heat dissipation through hole 11, thereby improving the effect of ventilation and heat dissipation. On the contrary, if it is not necessary to improve the effect of ventilation and heat dissipation, the second heat dissipation through hole 12 is closed.

[0064] In this embodiment, as shown in Figure 2 , Figure 4 and Figure 5 Two open grooves are arranged on the outer wall surface of the cabinet body 1, the two open grooves are arranged on opposite sides in the width direction of the cabinet body 1, and a plurality of second heat dissipation through holes 12 are arranged in the open grooves. A cover plate 13 is reversibly connected to the outer side wall of the voltage control cabinet, and the cover plate 13 is reversibly covered on the plurality of second heat dissipation through holes 12. An electric telescopic rod 14 is connected to the inner side of the cover plate 13, and the electric telescopic rod 14 is used to drive the cover plate 13 to be reversed. In specific implementation, the second heat dissipation through hole 12 can be opened and closed by reversing the cover plate 13. After heat dissipation is completed, the second heat dissipation through hole 12 can be closed. Since the second heat dissipation through hole 12 is distributedly arranged instead of being arranged in a centralized large opening 22, the heat dissipation, electromagnetic shielding and dust prevention can be balanced.

[0065] Based on the above embodiment, as shown in Figure 2 , Figure 4 and Figure 5 To further balance the effects of ventilation and heat dissipation and electromagnetic shielding, a rod passing groove 15 is arranged on the wall of the cabinet body 1, that is, the open groove is provided with the rod passing groove 15, and a vertical sliding groove 130 is arranged on the cover plate 13. One end of the electric telescopic rod 14 is mounted on the moving part 31, and the other end of the electric telescopic rod 14 passes through the rod passing groove 15 and is slidingly mounted in the sliding groove 130. In specific implementation, the electric telescopic rod 14 can move with the moving part 31. When the electric telescopic rod 14 is located at the bottom of the sliding groove 130, the reversible angle range of the cover plate 13 is small. When the electric telescopic rod 14 is located at the top of the sliding groove 130, the reversible angle range of the cover plate 13 is large. That is, the movement of the moving part 31 can increase or decrease the reversible angle range of the cover plate 13, so as to balance the effects of ventilation and heat dissipation and electromagnetic shielding.

[0066] In this embodiment, as shown in Figures 2 to 5As shown, the electric telescopic rod 14 is rotatably connected with a first connecting seat 315 at one end of the lifting block 310 of the moving part 31, and the first connecting seat 315 is fixedly installed on the lifting block 310; the electric telescopic rod 14 is rotatably connected with a second connecting seat 316 at one end adjacent to the sliding groove 130, and the second connecting seat 316 is fixedly connected with a T-shaped block 317; the sliding groove 130 has a T-shaped slot, and the electric telescopic rod 14 and the sliding groove 130 are slidably connected through the T-shaped block 317 and the T-shaped slot.

[0067] In a specific application scenario, when ventilation and heat dissipation are required, but a high electromagnetic shielding effect needs to be maintained, the moving part 31 can be maintained stationary, at this time, the electromagnetic shielding cover 2 is stationary, the electric telescopic rod 14 is started to extend and retract to open the cover plate 13, and the cover plate 13 is maintained at a small opening angle, so as to achieve the effects of ventilation and heat dissipation and a high electromagnetic shielding effect.

[0068] In another specific application scenario, when high-flow ventilation and heat dissipation are required, the moving part 31 can be started to move, driving the electromagnetic shielding cover 2 and the electric telescopic rod 14 to move in the direction adjacent to the first heat dissipation through hole 11, at this time, the electromagnetic shielding space 20 will become larger, and the electric telescopic rod 14 will be located at the top of the sliding groove 130, at this time, the electric telescopic rod 14 is started to extend and retract to open the cover plate 13, and the cover plate 13 is maintained at a large opening angle, so that the heat of the voltage controller body 4 can be dissipated as much as possible, and the high-flow ventilation and heat dissipation effect is maintained.

[0069] In the embodiment, the preset installation position 10 is arranged at the bottom of the cabinet body 1; the ventilation channel 21 is vertically arranged; along the direction from the bottom of the cabinet body 1 to the top of the cabinet body 1, the second heat dissipation through hole 12 and the first heat dissipation through hole 11 are arranged in sequence, and in specific implementation, the heat of the voltage controller body 4 can be transferred to the second heat dissipation through hole 12 and the first heat dissipation through hole 11 through the vertically arranged ventilation channel 21, and the heat dissipation effect is fully improved in combination with the characteristics of hot air rising.

[0070] Based on the above embodiment, as Figure 4As shown, the second heat dissipation through hole 12 is arranged on the same side as the first heat dissipation through hole 11, the aperture size of the second heat dissipation through hole 12 is smaller than that of the first heat dissipation through hole 11, and the hole arrangement density of the second heat dissipation through hole 12 is greater than that of the first heat dissipation through hole 11. In specific implementation, the first heat dissipation through hole with large aperture serves as the main heat dissipation path, and most heat can be dissipated through the first heat dissipation through hole, while the second heat dissipation through hole with small aperture and high density serves as a secondary heat dissipation supplement, so that the heat dissipation of the entire device is more flexible. For example, when the heat dissipation amount of the first heat dissipation through hole approaches the target heat dissipation amount required, but a more accurate target heat dissipation amount is still needed, secondary heat dissipation correction can be performed through the second heat dissipation through hole with small aperture and high density to achieve the target heat dissipation amount, thereby avoiding the problem that there is only one heat dissipation hole in the prior art and the heat dissipation size cannot be adjusted according to the current heat amount.

[0071] In some specific embodiments, as shown in Figure 2 and Figure 3 Further provided is an implementation structure of the moving mechanism 3, which includes a driving part 30 and a moving part 31. The driving part 30 includes a driving motor 300 and a reciprocating screw rod 301. The driving motor 300 is in transmission connection with the reciprocating screw rod 301, and the axis direction of the reciprocating screw rod 301 is vertically arranged. The moving part 31 includes a lifting block 310 and a lifting frame 311. The lifting block 310 is slidingly installed on the reciprocating screw rod 301, and the lifting frame 311 is fixedly connected with the lifting block 310. The lifting block 310 is further used for being fixedly connected with the electric telescopic rod 14. The lifting frame 311 is slidingly connected with the cabinet body 1, and the lifting frame 311 is detachably connected with the electromagnetic shielding cover 2. In specific implementation, the driving motor 300 drives the reciprocating screw rod 301 to rotate, which drives the lifting block 310 and the lifting frame 311 to move up and down, thereby driving the electric telescopic rod 14 and the electromagnetic shielding cover 2 to move. In addition, the detachable connection of the electromagnetic shielding cover 2 facilitates maintenance and replacement, prevents the electromagnetic shielding cover 2 from aging in a high-temperature environment for a long time, and has lower maintainability compared with the shielding structure of the prior art.

[0072] In the embodiment, as shown in Figure 2 One end of the reciprocating screw rod 301 is in transmission connection with the output shaft of the driving motor 300, and the other end of the reciprocating screw rod 301 is movably installed on a screw rod seat 314, which is fixedly connected with the inner wall of the cabinet body 1, so as to keep the reciprocating screw rod 301 arranged in a vertical direction.

[0073] In the embodiment, the moving mechanism 3 is arranged on one side of the length direction of the cabinet body 1. The other side of the length direction of the cabinet body 1 is provided with a vertical support rod, and a lifting sliding block is slidingly installed on the vertical support rod. The lifting sliding block is fixedly connected with the lifting frame 311.

[0074] In the embodiment, asFigure 7 and Figure 8 As shown, a detachable structure for the electromagnetic shielding cover 2 is further provided. The moving part 31 also includes a limiting block 312 and a limiting spring 313. A limiting groove 3110 is provided inside the lifting frame 311, and limiting strips 23 are provided on both outer walls of the electromagnetic shielding cover 2. The limiting strips 23 are installed in the limiting groove 3110. One end of the limiting groove 3110 is open, and the open end of the lifting frame 311 is provided with an arc-shaped through groove 3111. The limiting block 312 covers the open end of the lifting frame 311. A limiting pin 3 is provided on the side of the limiting block 312 adjacent to the limiting groove 3110. 120. The limiting pin 3120 is inserted into the arc-shaped through groove 3111. The end of the limiting pin 3120 and the arc-shaped through groove 3111 compresses the limiting spring 313. In specific implementation, when the electromagnetic shielding cover 2 needs to be replaced, the limiting block 312 can be rotated to open the open end of the lifting frame 311. The limiting strip 23 can slide in or out of the limiting groove 3110. Finally, the limiting block 312 is released, and the limiting spring 313 will reset the limiting block 312, thus completing the purpose of disassembling and assembling the electromagnetic shielding cover 2 and avoiding the aging of the electromagnetic shielding cover 2 due to long-term high temperature environment.

[0075] In this embodiment, the lifting frame 311 is made of insulating material to prevent the electromagnetic shield 2 from conducting electricity into the lifting frame 311. The lifting frame 311 is a "U"-shaped frame with frame blocks extending from it. The inner wall of the cabinet body 1 is provided with vertically arranged frame grooves, and the frame blocks are slidably installed in the frame grooves, thereby realizing the sliding connection between the lifting frame 311 and the cabinet body 1.

[0076] In this embodiment, as Figure 7 As shown, the end of the limiting block 312 away from the limiting groove 3110 has several grooves, which can increase the friction of the surface of the rotating limiting block 312.

[0077] In some specific embodiments, such as Figure 2 and Figure 6 As shown, a feasible structure for the electromagnetic shielding cover 2 is further provided. At least one side of the electromagnetic shielding cover 2 is provided with an opening 22. The opening 22 is connected to both the ventilation channel 21 and the electromagnetic shielding space 20. In specific implementation, the heat in the electromagnetic shielding space 20 can be directly dissipated to the outside through the opening 22. The ventilation channel 21 on the side with the opening 22 is shorter, and the heat can be transferred to the first heat dissipation hole 11 more quickly.

[0078] In this embodiment, as Figure 2 and Figure 6As shown, opposite sides of the electromagnetic shield 2 are provided with openings 22 in the width direction of the cabinet body 1, so that the entire electromagnetic shield 2 forms a "U"-shaped plate structure, the ventilation channels 21 on both sides of the electromagnetic shield space 20 are relatively short, and the heat in the electromagnetic shield space 20 can be quickly transferred to the first heat dissipation through hole 11 from both sides.

[0079] In some possible embodiments, as shown in Figure 2 and Figure 6 As shown, all sides of the electromagnetic shield 2 are provided with openings 22, and the electromagnetic shield 2 forms a straight plate structure, the ventilation channels 21 on the circumferential side of the electromagnetic shield space 20 are relatively short, and the heat in the electromagnetic shield space 20 can be quickly transferred to the first heat dissipation through hole 11 from the circumferential side. In this structure, the ventilation and heat dissipation effect is best.

[0080] In this embodiment, the second heat dissipation through hole 12 is located on the side of the electromagnetic shield 2 without the opening 22, that is, the position of the second heat dissipation through hole 12 is the side of the electromagnetic shield 2 with the side wall. The second heat dissipation through hole 12 is in communication with the ventilation channel 21, and the opening 22 is not directly in communication with the second heat dissipation through hole 12, which can achieve heat dissipation while considering the electromagnetic shielding effect.

[0081] In this embodiment, the material of the electromagnetic shield 2 is conductive rubber, or conductive plastic, or conductive metal material, which can effectively weaken the electric field strength, avoid the strong electromagnetic field from affecting the internal components, and improve the service life of the equipment. As long as the material can achieve electromagnetic shielding, it can be used as the material of the electromagnetic shield 2, and the person skilled in the art can select according to the actual needs.

[0082] In some specific embodiments, as shown in Figure 2 Further, the structure of the ventilation channel 21 is provided, and the gap between the outer circumferential surface of the electromagnetic shield 2 and the inner circumferential wall of the cabinet body 1 forms the ventilation channel 21, the ventilation channel 21 is arranged around the outer circumferential surface of the electromagnetic shield 2, one end of the ventilation channel 21 is in communication with the electromagnetic shield space 20, and the other end of the ventilation channel 21 is in communication with the first heat dissipation through hole 11. In specific implementation, the ventilation channel 21 is not directly provided on the electromagnetic shield 2, but is formed by the outer circumferential surface of the electromagnetic shield 2 and the inner circumferential wall of the cabinet body 1, which can ensure the electromagnetic shielding effect, and the ventilation channel 21 is arranged around the electromagnetic shield 2, so that the heat transfer efficiency is high.

[0083] Wherein, with the movement of the electromagnetic shield 2, the position of the ventilation channel 21 will change, for example, if the electromagnetic shield 2 moves in the direction adjacent to the first heat dissipation through hole 11, the electromagnetic shield space 20 becomes larger, and the position of the ventilation channel 21 changes from the original position to a position closer to the first heat dissipation through hole 11. Conversely, the position of the ventilation channel 21 changes from the original position to a position farther away from the first heat dissipation through hole 11.

[0084] Based on the above embodiments, as shown in Figure 1 The voltage control device for protector test comprises a voltage control cabinet, and a voltage controller body 4 arranged on a preset mounting position 10. In actual implementation, the voltage controller body 4 can be placed in the voltage control cabinet. Since the voltage control cabinet can adjust the heat dissipation effect and the electromagnetic shielding effect, it can adapt to the fluctuation under different voltage controllers and different working conditions.

[0085] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0086] Finally, it should be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations.

Claims

1. A voltage control cabinet for a protector test, characterized in that, The application relates to a voltage control cabinet. The cabinet body is internally provided with a preset installation position for installing a voltage controller body, and a plurality of first heat dissipation through holes are arranged on the cabinet body. An electromagnetic shielding cover is arranged between the preset installation position and the first heat dissipation through holes, the electromagnetic shielding cover and the cabinet body enclose an electromagnetic shielding space, a ventilation channel is left between the electromagnetic shielding cover and the cabinet body, and the ventilation channel is in communication with the electromagnetic shielding space and the first heat dissipation through holes. A moving mechanism comprises a driving part and a moving part, the driving part is in transmission connection with the moving part, the moving part is arranged in the interior of the cabinet body, the electromagnetic shielding cover is arranged on the moving part, and the transmission of the driving part is used for driving the electromagnetic shielding cover to move close to or away from the first heat dissipation through holes, so that the electromagnetic shielding space is enlarged or reduced. A second heat dissipation through hole which can be opened and closed is arranged on the cabinet body, the second heat dissipation through hole is arranged on the ventilation channel, and the second heat dissipation through hole is in communication with the ventilation channel. A plurality of second heat dissipation through holes are arranged on the wall of the cabinet body. A cover plate which can be reversibly connected is arranged on the outer wall of the voltage control cabinet, and the cover plate reversibly covers the plurality of second heat dissipation through holes. An electric telescopic rod is connected to the inner side of the cover plate, and the electric telescopic rod is used for driving the cover plate to be reversed. A through rod through slot is arranged on the wall of the cabinet body, and a sliding slot is arranged on the cover plate. The slotting axis of the through rod through slot and the slotting axis of the sliding slot are the same as the moving direction of the moving part. One end of the electric telescopic rod is arranged on the moving part, and the other end of the electric telescopic rod passes through the through rod through slot and is slidably arranged in the sliding slot.

2. The voltage control cabinet according to claim 1, characterized in that At least one side of the electromagnetic shielding cover is provided with an opening, and the opening is in communication with the ventilation channel and the electromagnetic shielding space. The wall of the cabinet body adjacent to the side of the opening is not provided with the second heat dissipation through hole.

3. The voltage control cabinet of claim 1, wherein, The preset installation position is arranged at the bottom of the cabinet body. The ventilation channel is vertically arranged. From the bottom of the cabinet body to the top of the cabinet body, the second heat dissipation through hole and the first heat dissipation through hole are arranged in sequence.

4. The voltage control cabinet according to claim 3, wherein: The driving part comprises a driving motor and a reciprocating screw rod, the driving motor is in transmission connection with the reciprocating screw rod, and the axis direction of the reciprocating screw rod is vertically arranged. The moving part comprises a lifting block and a lifting frame, the lifting block is slidably arranged on the reciprocating screw rod, the lifting frame is fixedly connected with the lifting block, the lifting block is further used for being fixedly connected with an electric telescopic rod, the lifting frame is slidably connected with the cabinet body, and the lifting frame is detachably connected with the electromagnetic shielding cover.

5. The voltage control cabinet according to claim 4, characterized in that The moving part further comprises a limiting block and a limiting spring. A limiting groove is arranged in the lifting frame, a limiting strip is arranged on the outer wall of the electromagnetic shielding cover, and the limiting strip is arranged in the limiting groove. One end of the limiting groove is open, the open end of the lifting frame is provided with an arc-shaped through slot, and the limiting block covers the open end of the lifting frame. The limiting block is provided with a latch adjacent to one side of the limiting groove, the latch is inserted into the arc-shaped through groove, and the limiting spring is compressed at the end of the arc-shaped through groove.

6. The voltage control cabinet of claim 1, wherein, The second heat dissipation through hole has a smaller hole diameter and a higher hole arrangement density than the first heat dissipation through hole.

7. A voltage control device for a protector test, characterized by Comprising: The voltage control cabinet according to any one of claims 1-6; The voltage controller body is arranged on the preset mounting position.

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