Anti-electric shock safety switch cabinet

Abstract

The invention relates to the technical field of power distribution facilities, and particularly discloses an anti-electric shock safety switch cabinet which comprises a cabinet body, a plurality of transverse plates are arranged in the cabinet body at intervals up and down, rotating rods are rotatably arranged on the rear sides of the transverse plates, a plurality of push rods are inserted into each transverse plate, and insulating plates used for installing electric devices are arranged at the front ends of the push rods. Rollers are arranged at the rear ends of the push rods, turntables aligned with the push rods are arranged on the rotating rod at intervals, guide ring grooves acting with the rollers are formed in the side faces of the turntables, strip-shaped transmission boxes corresponding to the insulating plates are arranged on the inner side wall of the cabinet body, one end of the rotating rod extends into the strip-shaped transmission boxes, and the other end of the rotating rod extends into the strip-shaped transmission boxes. A screwing part is arranged at the other end of the strip-shaped transmission box, and a transmission assembly for connecting the screwing part with the rotating rod is arranged in the strip-shaped transmission box; according to the switch cabinet disclosed by the invention, the electric shock risk caused by contact between a human body and other adjacent electric devices in a maintenance operation process is avoided, and the electric shock prevention performance is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution facilities, and in particular discloses an anti-electric shock safety switch cabinet. Background Art

[0002] Switchgear is a type of equipment used in power systems to open, close, control, and protect electrical equipment. It houses circuit breakers, disconnectors, load switches, operating mechanisms, transformers, and various protective devices. While current switchgear on the market offers a certain degree of protection against electric shock, it still poses a risk of electric shock in certain circumstances. For example, during maintenance, workers may use insulated tools, but their bodies may accidentally touch other electrical components in the same row. If a component leaks, this can easily lead to an electric shock risk. Furthermore, if a component leaks, causing the cabinet to become charged, combined with the conductive properties of surface water, pedestrians approaching it can be easily electrocuted.

[0003] The invention patent with application number 202210829847.5 discloses an intelligent high and low voltage distribution cabinet, which includes a housing frame and a cabinet door symmetrically arranged in the middle of the front end of the housing frame, and also includes a wiring adjustment module and an anti-electric shock module. The wiring adjustment module is installed at the lower end of the housing frame. The wiring adjustment module is used to undertake the installation of high and low voltage line components. The anti-electric shock module is installed at the upper end of the housing frame. The anti-electric shock module is connected to the wiring adjustment module to alarm for line leakage. Although the distribution cabinet disclosed in this patent can accurately install and adjust line components, it can also transmit the phenomenon of leakage inside the high and low voltage lines, avoid workers from accidentally touching them, and ensure the safety of workers. However, during the inspection and maintenance process of the operating personnel, since the electrical components are installed in rows on the wiring skeleton, when the operating personnel repair the faulty electrical components, the adjacent electrical components are energized and running. Once the human body accidentally touches them, it is very easy to cause the risk of electric shock. Furthermore, the wiring skeleton is conductive, so when electrical components leak, the current can easily be transferred to the cabinet through the wiring skeleton. If water accumulates in the surrounding area, it can cause a safety accident if someone passes by. Therefore, to address the shortcomings of existing intelligent high and low voltage distribution cabinets in preventing electric shock, this application designs an anti-electric shock safety switch cabinet that can effectively prevent the above-mentioned electric shock safety accidents. Summary of the Invention

[0004] The present invention aims to provide an anti-electric shock safety switch cabinet to solve the safety accidents caused by personnel maintenance or water accumulation in the accessories of the existing switch cabinet, greatly improving the safety of the entire power distribution facility.

[0005] The present invention is achieved through the following technical solutions: An anti-electric shock safety switch cabinet comprises a cabinet body, a cabinet door rotatably provided on the cabinet body, a plurality of horizontal panels spaced apart in an upper and lower manner inside the cabinet body, a rotating rod rotatably provided in the cabinet body behind the horizontal panels, a plurality of push rods that move forward and backward are inserted into each of the horizontal panels, an insulating plate for mounting an electrical component is provided at the front end of the push rod, and a roller is provided at the rear end of the push rod; The rotating rods are provided with rotating discs aligned with each push rod at intervals, and the sides of the rotating discs are provided with guide ring grooves for interacting with the rollers. The guide ring grooves are composed of a small-diameter arc segment and a convex segment connected together, and the convex segments on the same row of rotating discs are arranged in sequence at a certain angle in the circumferential direction; A strip transmission box corresponding to each insulating plate is provided on the inner wall of the cabinet, one end of the rotating rod extends into the strip transmission box, and the other end of the strip transmission box is provided with a twisting part. A transmission assembly connecting the twisting part and the rotating rod is provided inside the strip transmission box.

[0006] As a further configuration of the above scheme, a row of guide cylinders is provided on the horizontal plate, the push rod is set through the guide cylinder, the insulating plate is provided with a guide rod set through the through hole on the horizontal plate, and a spring is connected between the insulating plate and the horizontal plate.

[0007] As a further configuration of the above solution, a connection frame for mounting electrical components is provided on the front side of the insulating plate.

[0008] As a further arrangement of the above scheme, the transmission assembly includes a rotating shaft rotatably arranged inside the bar transmission box, and a third bevel gear is provided at both ends of the rotating shaft. The end of the rotating rod extending into the bar transmission box is provided with a first bevel gear meshing with the third bevel gear, and the end of the twisting part extending into the bar transmission box is provided with a second bevel gear meshing with the third bevel gear.

[0009] As a further configuration of the above scheme, the cabinet body includes an outer shell and an inner shell, and a gap is reserved between the outer shell and the inner shell, an insulating pad is provided in the gap to support the inner shell, and a rectangular insulating strip is provided on the cabinet door to fit the end face of the inner shell.

[0010] As a further configuration of the above solution, a first heat dissipation hole and a second heat dissipation hole are respectively opened on the left and right side surfaces of the outer shell and the inner shell, and the first heat dissipation hole and the second heat dissipation hole are aligned.

[0011] As a further configuration of the above scheme, an air inlet channel is provided on the outer side surface of the first heat dissipation hole, a heat dissipation fan is provided in the air inlet channel, a rectangular frame is fixed on the inner side surface of the first heat dissipation hole, heat dissipation fins and heat exchange tubes are provided in the rectangular frame, the heat exchange tubes are arranged in an S shape passing through the heat dissipation fins, and the two ends of the heat exchange tubes are respectively connected to the cooling water tank and the circulation pump located on the outer surface of the outer shell.

[0012] As a further configuration of the above solution, it also includes a top cover and a pad. The top cover is installed at the upper end of the cabinet and protrudes a certain distance from the side of the cabinet on all sides. The pad is set at the lower end of the cabinet and is made of rubber material.

[0013] When the electric shock prevention safety switch cabinet disclosed by the present invention needs to inspect and maintain the internal electrical components, the operator can first rotate the screwing part to rotate the rotating rod under the action of the transmission assembly. During the rotation of the rotating rod, the action between the guide ring groove and the roller on the turntable will cause a row of push rods to move toward the cabinet opening in succession until the corresponding electrical component that needs to be inspected moves to the front end. At this time, the other electrical components are close to and fit on the horizontal plate, so that the electrical component and the other electrical components are staggered by about 10 cm. At this time, the operator can avoid direct contact between the human body and other electrical components when using tools for inspection and maintenance. Even if other electrical components are energized, there is no risk of electric shock. When the inspection of the electrical component is completed, continue to rotate the screwing part until all electrical components are tightly attached to the surface of the horizontal plate and then it can operate normally.

[0014] In addition, the power distribution cabinet disclosed in the present invention adopts a shell design with double inner and outer layers of insulation separating each other. Even if the electrical components inside the cabinet leak, only the inner shell will be charged, and its outer shell is always in an insulated state and cannot conduct the leaked electricity out, which greatly solves the risk of electric shock to pedestrians caused by cabinet leakage + water accumulation on the ground.

[0015] Finally, a heat exchange and cooling mechanism is set in the middle layer of the cabinet with a double-layer shell design. Combined with the active blowing effect of the heat dissipation fan, low-temperature air can be continuously blown into the interior of the cabinet. Even under high-temperature and high-negative-pressure operating conditions, the internal electrical components will not be damaged by high temperature and cause the risk of leakage, further improving its safety performance.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a special mounting structure for the assembly of electrical components, so that during the process of overhauling and maintaining electrical components, the corresponding electrical components can be extended forward a certain distance so that they are staggered front and back with the electrical components in the same row, thereby avoiding the risk of electric shock caused by human body contact with other adjacent electrical components during the overhaul operation, and effectively improving its anti-electric shock performance.

[0017] The present invention adopts a cabinet with an inner and outer double-layer design, and the two are separated by insulating pads. When electrical components inside the cabinet leak, the current cannot be transmitted to the external shell, making it have higher safety performance and avoiding the risk of electric shock to pedestrians.

[0018] The present invention further designs a forced heat dissipation and cooling system of a heat dissipation fan + heat exchange and cooling mechanism on the basis of the double-layer cabinet body, so that the switch cabinet can operate stably under high temperature and high negative pressure conditions, avoiding leakage problems caused by damage to electrical components, and further improving its safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the horizontal plates, discs, push rods, etc. in the present invention; Figure 5 Schematic diagram of the internal planar structure of the strip transmission box of the present invention; Figure 6 This is a schematic diagram of the three-dimensional assembly structure of Example 2 of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the heat exchange tubes, heat dissipation fins, cooling water tank, etc. in the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Figures 1 to 7 , and describes the application in detail with reference to embodiments. Example 1

[0023] Example 1 discloses an anti-electric shock safety switch cabinet, see the attached Figure 1 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5 , comprising a cabinet body 1, the top of which is provided with a top cover 2 that protrudes a certain distance on all sides, and the bottom of the cabinet body 1 is provided with a plurality of pads 3, and the pads 3 are made of an insulating rubber material. A cabinet opening is provided on the front side of the cabinet body 1, and a cabinet door 4 is connected to the cabinet opening by a hinge, so that the interior of the cabinet body 1 can be sealed when the cabinet door 4 is closed. In addition, in order to improve the heat dissipation performance inside the cabinet body, corresponding first heat dissipation holes 101 are also provided on the left and right sides of the cabinet body 1, so that external cold air can circulate through the first heat dissipation holes 101 on both sides, dissipating the heat inside the cabinet body.

[0024] A plurality of horizontal plates 5 are arranged at intervals in the upper and lower parts of the cabinet 1, and a rotating rod 6 aligned with the front and rear is rotatably installed in the cabinet 1 behind each horizontal plate 5. A row of guide cylinders are arranged at intervals in the left and right parts of the horizontal plates 5, and a push rod 7 is passed through each guide cylinder. The front end of each push rod 7 is connected to an insulating plate 8, and the rear end is connected to a roller 15. A connecting frame 10 for mounting electrical components 9 is provided on the front side of the insulating plate 8, so that electrical components such as circuit breakers and relays can be fixed on the connecting frame 10 by screws. In addition, a spring 11 is connected between the insulating plate 8 and the horizontal plate 5, and a guide rod 12 provided through the through hole on the horizontal plate 5 is connected to the insulating plate 8, so that the insulating plate 8 can move stably back and forth under the action of the push rod 7.

[0025] Turntables 13 aligned with each push rod 7 are arranged at intervals along the length direction of the rotating rod 6, and a guide ring groove 14 that acts on the roller 15 is concentrically opened on one side surface of the turntable 13. The guide ring groove 14 is composed of a small-diameter arc segment 141 and a convex segment 142, and the convex segments 142 on the same row of turntables 13 are arranged in sequence at a certain angle in the circumferential direction.

[0026] Finally, a strip-shaped transmission case 16 is mounted on one inner wall of the cabinet 1, aligned with each horizontal row of plates 5. One end of the rotating rod 6 extends into the strip-shaped transmission case 16 and is connected to a first bevel gear 17. The other end of the strip-shaped transmission case 16 is rotatably connected to a screwing portion 18, and the end of the screwing portion 18 extending into the strip-shaped transmission case 16 is connected to a second bevel gear 19. A built-in bearing is provided within the strip-shaped transmission case 16, and a rotating shaft 20, arranged perpendicular to the rotating rod 6, is rotatably connected within the built-in bearing. A third gear 21 is mounted at each end of the rotating shaft 20, meshing with the first bevel gear 17 and the second bevel gear 19, respectively.

[0027] Before maintenance, the electric shock safety switch cabinet disclosed in Example 1 has the rollers 15 at the rear ends of all push rods 7 engage with the small-diameter arc segments 141 in the guide ring grooves 14, thereby positioning the insulating plates 8 against the horizontal plates 5. When an electrical component needs to be repaired or replaced, the operator first rotates the corresponding screwing portion 18. The bevel gears drive the rotating rod 6, causing the convex segments 142 on the row of turntables 13 to rotate. As the rotating rod 6 rotates, the convex segments 142 on the row of turntables 13 successively interact with the rollers 15. The interaction between the rollers 15 and the convex segments 142 pushes the push rod 7 forward to its furthest end. When the electrical component to be repaired or replaced reaches its furthest end, the screwing portion 18 is stopped, extending approximately 10 cm relative to the row of electrical components on the horizontal plates 5. The component can then be repaired or replaced. After the replacement is complete, the screwing portion 18 is rotated again, causing the entire row of electrical components to retract into contact with the horizontal plates 5. During the entire operation, the operator can avoid the risk of electric shock caused by accidentally touching other electrical components in the same row, thereby greatly improving safety. Example 2

[0028] Example 2 discloses an anti-electric shock safety switch cabinet that is further improved based on the technical solution in Example 1. The similarities between it and Example 1 are not described again.

[0029] Reference Attachment Figure 2 , Attachment Figure 6 and attached Figure 7 The cabinet 1 in this embodiment 2 includes an outer shell 102 and an inner shell 103, and a certain gap is reserved between the outer shell 102 and the inner shell 103, and the horizontal plate 5, the rotating rod 6, the electrical component 9, etc. are all arranged in the inner shell 103. An insulating gasket 104 made of rubber or plastic material is arranged in the gap. The supporting effect of the insulating gasket 104 can, on the one hand, allow the inner shell 103 to be stably arranged inside the outer shell 102, and on the other hand, it can avoid safety accidents caused by the external electrification of the cabinet 1 when the electrical component 9 leaks. In addition, a rectangular insulating rubber strip 401 is also provided on the inner surface of the cabinet door 4, which is in contact with the end face of the inner shell 103. When the cabinet door 4 is closed, the rectangular insulating rubber strip 401 is pressed against the end face of the inner shell 103, thereby achieving sealing inside the inner shell 103 and playing an insulating role.

[0030] The first heat dissipation holes 101 are opened on the left and right sides of the outer shell 102. At the same time, second heat dissipation holes 105 aligned with the first heat dissipation holes 101 are opened on the left and right sides of the inner shell 103, so that the double-layer design cabinet 1 still has the effect of air convection.

[0031] Furthermore, to prevent electric shock accidents caused by damage to the electrical components within cabinet 1 during high-temperature, high-load operation, an air inlet duct 22 is provided on the outer surface of outer shell 102, aligned with first heat dissipation hole 101. A heat dissipation fan 23 is installed within air inlet duct 22. A rectangular frame 24 is fixed to the inner wall of outer shell 102, inside first heat dissipation hole 101. Within this rectangular frame is a set of heat dissipation fins 25 arranged side by side, arranged vertically. Within this rectangular frame is an S-shaped heat exchange tube 26 extending through heat dissipation fins 25. Finally, a cooling water tank 27 with a built-in refrigerator is fixed to the outer surface of outer shell 102. A circulating pump 28 is installed within cooling water tank 27. Both ends of heat exchange tube 26 extend out of outer shell 102 and are connected to cooling water tank 27 and circulating pump 28, respectively.

[0032] During operation of the electric shock prevention safety switch cabinet disclosed in this embodiment 2, since the cabinet body 1 is composed of an outer shell 102 and an inner shell 103, and is separated by insulating gaskets 104, even if the internal electrical components leak, the outer shell 102 will not be charged, thereby preventing the risk of passive electric shock. When the switch cabinet is operating under high temperature and high load, the forced heat dissipation and cooling mode can be actively turned on. The heat dissipation fan 23 blows air toward the second heat dissipation hole 105, and when flowing through the gap between the outer shell 102 and the inner shell 103, it will exchange heat with the heat dissipation fins 25, causing the temperature of the airflow entering the inner shell 103 through the second heat dissipation hole 105 to drop sharply. Then, under the heat exchange of the cold and hot air flows, the electrical components inside the inner shell 103 are quickly cooled, avoiding safety accidents caused by damage to the electrical components due to high temperature.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-electric shock safety switch cabinet, comprising a cabinet body, wherein a cabinet door is rotatably provided on the cabinet body, characterized in that: A plurality of horizontal plates are arranged at intervals in the upper and lower parts of the cabinet body, a rotating rod is rotatably arranged in the cabinet body behind the horizontal plates, and a plurality of push rods that move forward and backward are inserted into each of the horizontal plates, an insulating plate for installing electrical components is provided at the front end of the push rod, and a roller is provided at the rear end of the push rod; The rotating rods are provided with rotating discs aligned with each push rod at intervals, and the sides of the rotating discs are provided with guide ring grooves for interacting with the rollers. The guide ring grooves are composed of a small-diameter arc segment and a convex segment connected together, and the convex segments on the same row of rotating discs are arranged in sequence at a certain angle in the circumferential direction; A strip transmission box corresponding to each insulating plate is provided on the inner wall of the cabinet, one end of the rotating rod extends into the strip transmission box, and the other end of the strip transmission box is provided with a twisting part. A transmission assembly connecting the twisting part and the rotating rod is provided inside the strip transmission box.

2. The anti-electric shock safety switch cabinet according to claim 1, characterized in that: The horizontal plate is provided with a row of guide cylinders, the push rod is provided through the guide cylinders, the insulating plate is provided with guide rods provided through the through holes of the horizontal plate, and a spring is connected between the insulating plate and the horizontal plate.

3. The anti-electric shock safety switch cabinet according to claim 2, characterized in that: A connection frame for mounting electrical components is provided on the front side of the insulating plate.

4. The anti-electric shock safety switch cabinet according to claim 1, characterized in that: The transmission assembly includes a rotating shaft rotatably arranged inside a bar transmission box, and a third bevel gear is provided at both ends of the rotating shaft. The end of the rotating rod extending into the bar transmission box is provided with a first bevel gear meshing with the third bevel gear, and the end of the twisting part extending into the bar transmission box is provided with a second bevel gear meshing with the third bevel gear.

5. The anti-electric shock safety switch cabinet according to claim 1, characterized in that: The cabinet includes an outer shell and an inner shell, and a gap is reserved between the outer shell and the inner shell. An insulating pad is provided in the gap to support the inner shell, and a rectangular insulating strip is provided on the cabinet door to fit the end face of the inner shell.

6. The anti-electric shock safety switch cabinet according to claim 5, characterized in that: The left and right side surfaces of the outer shell and the inner shell are respectively provided with a first heat dissipation hole and a second heat dissipation hole, and the first heat dissipation hole and the second heat dissipation hole are aligned.

7. The anti-electric shock safety switch cabinet according to claim 6, characterized in that: An air inlet channel is provided on the outer side surface of the first heat dissipation hole, a heat dissipation fan is provided in the air inlet channel, a rectangular frame is fixed on the inner side surface of the first heat dissipation hole, heat dissipation fins and heat exchange tubes are provided in the rectangular frame, the heat exchange tubes are S-shaped and pass through the heat dissipation fins, and the two ends of the heat exchange tubes are respectively connected to the cooling water tank and the circulation pump located on the outer surface of the shell.

8. The anti-electric shock safety switch cabinet according to claim 1, characterized in that: It also includes a top cover and a cushion block. The top cover is installed at the upper end of the cabinet and protrudes from the side of the cabinet by a certain distance on all sides. The cushion block is arranged at the lower end of the cabinet and is made of rubber material.

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