High-low voltage power transformation equipment

Abstract

The application relates to the technical field of transformer substations, in particular to a high-low voltage transformer equipment which comprises a box body, a high-voltage cabinet, a low-voltage cabinet and a power distribution cabinet arranged in the box body, the high-voltage cabinet and the low-voltage cabinet are arranged in a stacked mode, the power distribution cabinet is arranged on one side of the high-voltage cabinet and the low-voltage cabinet, the high-voltage cabinet is connected with the low-voltage cabinet, the low-voltage cabinet is connected with the power distribution cabinet, a connecting device is arranged between the high-voltage cabinet and the low-voltage cabinet, the connecting device comprises a first connecting piece arranged on the high-voltage cabinet and a second connecting piece arranged on the low-voltage cabinet, a circuit in the high-voltage cabinet is connected with the first connecting piece, a circuit in the low-voltage cabinet is connected with the second connecting piece, and the first connecting piece and the second connecting piece are inserted and matched. The application has the effect of protecting the high-voltage cabinet, the low-voltage cabinet and the power distribution cabinet from the influence of outdoor wind, sunlight and rain.

Description

Technical Field

[0001] This application relates to the technical field of substations, and in particular to a high- and low-voltage power conversion equipment. Background Technology

[0002] High-voltage switchgear, also known as high-voltage distribution cabinet, refers to electrical products used in power systems for switching, control, or protection during power generation, transmission, distribution, energy conversion, and consumption. It mainly includes several categories such as high-voltage circuit breakers, high-voltage disconnect switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and high-voltage switchgear. The high-voltage switchgear manufacturing industry is an important component of the power transmission and transformation equipment manufacturing industry and occupies a very important position in the entire power industry. Low-voltage switchgear is a type of electrical equipment where external lines first enter the main control switch inside the cabinet, and then enter the branch control switches. Each branch is set according to its needs. It includes instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage switchgear compartments, and high-voltage busbars, such as in power plants. Some also have underfrequency load shearing for the protection of main equipment. It is suitable for power plants, petroleum, chemical, metallurgical, textile, high-rise building, and other industries for power transmission, distribution, and energy conversion. It is the equipment responsible for completing energy control, protection, conversion, and distribution in low-voltage power supply systems.

[0003] High-voltage switchgear and low-voltage switchgear are widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories. The high-voltage switchgear and low-voltage switchgear are connected by electrical connection. High-voltage electricity from the power grid is connected to the high-voltage switchgear, where the high voltage is reduced by the high-voltage transformer. The reduced voltage is then transmitted to the low-voltage switchgear, where the low-voltage transformer converts the voltage into a standard voltage suitable for civilian use.

[0004] Existing high-voltage and low-voltage switchgear are usually installed independently in the outdoor environment, which means that the connecting wires between the high-voltage and low-voltage switchgear are exposed to the outdoors and are easily damaged by rain, wind and sun. After long-term use, they are prone to failure and require frequent maintenance. Summary of the Invention

[0005] To avoid the impact of outdoor environment on the normal use of high-voltage and low-voltage switchgear, this application provides a high- and low-voltage power supply equipment.

[0006] This application provides a high- and low-voltage power transmission equipment, which adopts the following technical solution: A high- and low-voltage power distribution device includes a housing and a high-voltage switchgear, a low-voltage switchgear, and a distribution cabinet disposed inside the housing. The high-voltage switchgear and the low-voltage switchgear are stacked on top of each other, and the distribution cabinet is disposed on one side of the high-voltage switchgear and the low-voltage switchgear. The high-voltage switchgear is connected to the low-voltage switchgear, and the low-voltage switchgear is connected to the distribution cabinet. A connecting device is provided between the high-voltage switchgear and the low-voltage switchgear. The connecting device includes a first connector mounted on the high-voltage switchgear and a second connector mounted on the low-voltage switchgear. The wiring inside the high-voltage switchgear is connected to the first connector, and the wiring inside the low-voltage switchgear is connected to the second connector. The first connector and the second connector are plugged into each other.

[0007] By adopting the above technical solutions, high-voltage switchgear, low-voltage switchgear, and distribution cabinets can all be placed inside the enclosure. On the one hand, this avoids the impact of the outdoor environment on the high-voltage switchgear, low-voltage switchgear, and distribution cabinets, preventing malfunctions. On the other hand, the stacked arrangement of the high-voltage and low-voltage switchgear significantly reduces their footprint, making the high- and low-voltage substation equipment more compact and easier to use. Pre-assembled, the entire equipment can be transported directly to the point of use. The stacked arrangement of the high-voltage and low-voltage switchgear, with the distribution cabinet located on one side, avoids the need for external wiring for connections between high-voltage and low-voltage switchgear, or between low-voltage and distribution cabinets. Connections can be made directly through the nearest point, saving on wiring.

[0008] Optionally, the first connector includes multiple plugs installed on the high-voltage cabinet and connected to the internal wiring, and the second connector includes multiple sockets installed on the low-voltage cabinet and connected to the internal wiring. The number of plugs is the same as the number of sockets, and the plugs are inserted into the corresponding sockets.

[0009] By adopting the above technical solution, the connection method of plug and socket makes the connection between high-voltage cabinet and low-voltage cabinet more convenient and faster. During the connection process, you only need to align the plug with the socket and plug it in, which greatly improves the installation speed. At the same time, it reduces the wiring consumed in the connection between high-voltage cabinet and low-voltage cabinet, and hides the connection position between high-voltage cabinet and low-voltage cabinet to prevent the external environment from affecting the connection.

[0010] Optionally, the first connector further includes a first connector seat slidably mounted on the high-voltage cabinet, with a plurality of plugs fixed on the first connector seat; the second connector further includes a second connector seat slidably mounted on the low-voltage cabinet, with a plurality of sockets fixed on the second connector seat; the sliding direction of the first connector seat is perpendicular to the sliding direction of the second connector seat.

[0011] By adopting the above technical solution, the first connector can connect multiple plugs into a whole, and the second connector can connect multiple sockets into a whole. By arranging the plugs on the first connector and the sockets on the second connector in the same way, multiple plugs can be inserted into their corresponding sockets simultaneously during the connection process, improving the connection efficiency between the high-voltage switchgear and the low-voltage switchgear. During the connection process between the high-voltage switchgear and the low-voltage switchgear, the sliding first connector and the second connector can adjust the relative position between the high-voltage switchgear and the low-voltage switchgear. High-voltage switchgear and low-voltage switchgear of different sizes can be connected and fixed together.

[0012] Optionally, the high-voltage switchgear has a first mounting hole on its surface facing the low-voltage switchgear. Inside the first mounting hole and along the sliding direction of the first connecting seat, at least two parallel first guide rods are provided, and the first connecting seat is slidably mounted on the two first guide rods. The low-voltage switchgear has a second mounting hole on its surface facing the high-voltage switchgear. Inside the second mounting hole and along the sliding direction of the second connecting seat, at least two parallel second guide rods are provided, and the second connecting seat is slidably mounted on the two second guide rods.

[0013] By adopting the above technical solution, the first mounting hole can slide with the first connecting seat, and the second mounting hole can slide with the second connecting seat, so that the first and second connecting seats are slidably installed in the corresponding high-voltage cabinet and low-voltage cabinet, avoiding the first and second connecting seats from protruding outside the high-voltage cabinet and low-voltage cabinet, minimizing the distance between the high-voltage cabinet and low-voltage cabinet, and making the two fit more tightly, thus making it easier and faster to connect the high-voltage cabinet and low-voltage cabinet; the structure of the first guide rod and the second guide rod is simpler and more convenient, allowing the first connecting seat to slide better with the high-voltage cabinet, and the second connecting seat to slide better with the low-voltage cabinet.

[0014] Optionally, a first reset member acting on the first connecting seat is sleeved on the first guide rods at both ends of the first connecting seat, and a second reset member acting on the second connecting seat is sleeved on the second guide rods at both ends of the second connecting seat.

[0015] By adopting the above technical solution, the first reset component and the second reset component can, on the one hand, play a buffering role to prevent the first connector from sliding and hitting the inner wall of the first mounting hole, and to prevent the second connector from sliding and hitting the inner wall of the second mounting hole. On the other hand, when the plug is removed from the socket, the first reset component can make the first connector move quickly to the middle position of the first mounting hole, and the second reset component can make the second connector move quickly to the middle position of the second mounting hole.

[0016] Optionally, the plurality of plugs are arranged on the first connector and the plurality of sockets are arranged on the second connector, the plurality of sockets are interconnected, and flared rings facing the plurality of plugs are fixedly connected to the openings of the plurality of sockets.

[0017] By adopting the above technical solution, when multiple plugs need to be inserted into the corresponding sockets, the flared ring can play a guiding role, allowing the plugs to be quickly and accurately inserted into the sockets.

[0018] Optionally, two of the sockets located at both ends are symmetrically provided with snap-fit ​​components on their sides. Each snap-fit ​​component includes a snap-fit ​​plate that is slidably disposed on the socket. A slot is provided on the side of the plug. The snap-fit ​​plate passes through the interior of the socket and is inserted into the slot.

[0019] By adopting the above technical solution, the snap-fit ​​plate and slot make the connection between the plug and the socket more secure. After the plug is plugged into the socket, it can be easily removed from the socket without being subjected to external force.

[0020] Optionally, the snap-fit ​​component further includes a snap-fit ​​spring mounted on the side of the socket, the snap-fit ​​spring pressing the snap-fit ​​plate tightly into the slot, and the plug is beveled at all four edges facing the socket.

[0021] By adopting the above technical solution, the snap-fit ​​spring can keep the snap-fit ​​plate pressed against the slot at all times, preventing the plug from coming off the socket due to external force. The plug end face is set as an inclined slope, which can push the snap-fit ​​plate outward and compress the snap-fit ​​spring. When the plug is inserted into place, the snap-fit ​​plate is inserted and fitted into the slot under the action of the snap-fit ​​spring.

[0022] Optionally, a first accordion rubber strip for sealing is provided inside the first mounting hole, excluding the gap of the first connecting seat, and a second accordion rubber strip for sealing is provided inside the second mounting hole, excluding the gap of the second connecting seat.

[0023] By adopting the above technical solution, the bellows strips are all telescopic structures. When the first connecting seat slides, the first bellows strip can seal the gap in the first mounting hole. When the second connecting seat slides, the second bellows strip can seal the gap in the second mounting hole, ensuring that the first and second mounting holes are always in a closed state, preventing external impurities from entering the high-voltage cabinet or low-voltage cabinet.

[0024] Optionally, the low-voltage switchgear and the distribution cabinet are provided with a connection device with the same structure.

[0025] By adopting the above technical solution, the connection device installed between the low-voltage cabinet and the distribution cabinet can better connect the two into a whole. The connection device can also connect the distribution cabinet and the low-voltage cabinet of different specifications and models, while avoiding the need for the connecting wires to be exposed to the outside of the low-voltage cabinet and the distribution cabinet.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The high-voltage cabinet, low-voltage cabinet, and distribution cabinet installed inside the enclosure in this application can provide secondary protection for the three, preventing them from easily malfunctioning in outdoor environments and avoiding the problem of water ingress. In addition, the connection devices installed between the high-voltage cabinet and the low-voltage cabinet, as well as between the low-voltage cabinet and the distribution cabinet, can move the connecting cables from being exposed to the outside to between the two adjacent ones, which firstly saves the amount of consumables used and secondly protects the cables. 2. The high-voltage switchgear and low-voltage switchgear, as well as the low-voltage switchgear and distribution cabinet, are connected by plugs and sockets for quick connection, making the connection process more convenient and improving efficiency; 3. The sliding first and second connecting seats allow relative sliding between the high-voltage cabinet and the low-voltage cabinet, making it easier to connect and fix the high-voltage cabinet and the low-voltage cabinet. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view illustrating the connecting device in an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram illustrating the card connector in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Enclosure; 2. High-voltage cabinet; 21. First mounting hole; 22. First guide rod; 3. Low-voltage cabinet; 31. Second mounting hole; 32. Second guide rod; 4. Distribution cabinet; 5. Connecting device; 51. First connector; 511. First connector seat; 512. Plug; 5121. Inclined surface; 52. Second connector; 521. Second connector seat; 522. Socket; 53. Return spring; 54. Flared ring; 55. Snap-fit ​​component; 551. Snap-fit ​​plate; 552. Slide groove; 553. Slot; 554. U-shaped clip; 555. Snap-fit ​​spring; 56. First bellows strip; 57. Second bellows strip; 58. Insulating cover; 6. Adjusting component; 61. Screw; 62. Support block; 63. Ball bearing. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] This application discloses a high- and low-voltage power transformation equipment.

[0031] Reference Figure 1 A high- and low-voltage transformer includes a hollow rectangular enclosure 1. Openings are formed on opposite surfaces of the enclosure 1, and hinged doors are fitted at these openings. Inside the enclosure 1 are a high-voltage switchgear 2, a low-voltage switchgear 3, and a distribution cabinet 4. The high-voltage switchgear 2 connects to the high-voltage power grid. The low-voltage switchgear 3 connects to the high-voltage switchgear 2 and reduces the high voltage. The low-voltage switchgear 3 connects to the distribution cabinet 4, and the reduced voltage is transmitted to the distribution cabinet 4. Inside the enclosure 1, the high-voltage switchgear 2 is mounted on the upper surface of the low-voltage switchgear 3, and the distribution cabinet 4 is located on the same side as the high-voltage switchgear 2 and low-voltage switchgear 3. The stacked arrangement of the high-voltage switchgear 2 and low-voltage switchgear 3 reduces the floor space required. The enclosure 1 protects the high-voltage switchgear 2, low-voltage switchgear 3, and distribution cabinet 4, preventing rain from affecting their normal operation.

[0032] Reference Figure 1 and Figure 2 A first mounting hole 21 is provided on the lower surface of the high-voltage switchgear 2, and the length direction of the first mounting hole 21 is the same as the length direction of the high-voltage switchgear 2. A second mounting hole 31 is provided on the upper surface of the low-voltage switchgear 3, and the length direction of the second mounting hole 31 is the same as the length direction of the low-voltage switchgear 3. The length directions of the first mounting hole 21 and the second mounting hole 31 are perpendicular to each other. Multiple first guide rods 22 are fixedly connected inside the first mounting hole 21. In this embodiment, a pair of first guide rods 22 are provided, and the two first guide rods 22 are arranged in parallel. The length directions of the two first guide rods 22 are the same as the length direction of the first mounting hole 21. Similarly, multiple second guide rods 32 are fixedly connected inside the second mounting hole 31. In this embodiment, a pair of second guide rods 32 are provided, and the two second guide rods 32 are arranged in parallel. The length directions of the two second guide rods 32 are the same as the length direction of the second mounting hole 31. The two first guide rods 22 and the two second guide rods 32 are perpendicular to each other.

[0033] Reference Figure 2 , Figure 3 and Figure 4A connecting device 5 is provided between the lower surface of the high-voltage cabinet 2 and the upper surface of the low-voltage cabinet 3 to connect the two. A connecting device 5 with the same structure and principle is also provided between the low-voltage cabinet 3 and the distribution cabinet 4. The connecting device 5 between the low-voltage cabinet 3 and the distribution cabinet 4 can tightly connect the low-voltage cabinet 3 and the distribution cabinet 4. In this embodiment, the connecting device 5 between the high-voltage cabinet 2 and the low-voltage cabinet 3 is used as an example for illustration, and the connecting device 5 between the low-voltage cabinet 3 and the distribution cabinet 4 will not be described in detail. The connecting device 5 includes a first connecting member 51 disposed on the lower surface of the high-voltage cabinet 2 and a second connecting member 52 disposed on the upper surface of the low-voltage cabinet 3. The first connecting member 51 includes a first connecting member that slides inside the first mounting hole 21 and is rectangular in shape. The first connecting seat 511 has its length direction aligned with the width direction of the first mounting hole 21. Two first guide rods 22 pass through the first connecting seat 511 along its width direction, allowing the first connecting seat 511 to slide along the length direction of the first guide rods 22. Multiple rectangular plugs 512 are fixedly connected to the lower surface of the first connecting seat 511, arranged along its length. In this embodiment, three plugs 512 are used. The wiring inside the high-voltage cabinet 2 passes through the first connecting seat 511 and connects to the corresponding plugs 512. The second connecting member 52 includes a rectangular second connecting seat that slides within the second mounting hole 31. 521, the length direction of the second connecting seat 521 is the same as the length direction of the second mounting hole 31, and the second connecting seat 521 is the same size as the first connecting seat 511. The length direction of the first connecting seat 511 is the same as the length direction of the second connecting seat 521. Two second guide rods 32 pass through the second connecting seat 521 along the length direction of the second connecting seat 521, allowing the second connecting seat 521 to slide along the length direction of the second guide rods 32. A plurality of rectangular sockets 522 are fixedly connected to the upper surface of the second connecting seat 521. The plurality of sockets 522 are arranged along the length direction of the second connecting seat 521. In this embodiment, three sockets 522 are provided, corresponding to the number of plugs 512. 522 Fixed connection: When the high-voltage cabinet 2 is placed on the upper surface of the low-voltage cabinet 3, the operator plugs the plug 512 into the corresponding socket 522. Due to its own weight, the connection between the plug 512 and the socket 522 is more secure. During the installation process, since the positions of the plug 512 on the high-voltage cabinet 2 and the socket 522 on the low-voltage cabinet 3 are different for different specifications, when installing the high-voltage cabinet 2 onto the low-voltage cabinet 3, in order to ensure that the high-voltage cabinet 2 can be accurately and stably placed on the low-voltage cabinet 3, the first connecting seat 511 and the second connecting seat 521 are slidably set to allow relative sliding between the high-voltage cabinet 2 and the low-voltage cabinet 3, thereby making it easier to connect the high-voltage cabinet 2 and the low-voltage cabinet 3.

[0034] Furthermore, first reset members are respectively fitted onto the two first guide rods 22 at positions on both sides of the first connecting seat 511, and second reset members are respectively fitted onto the two second guide rods 32 at positions on both ends of the second connecting seat 521. Both the first and second reset members are reset springs 53. One end of the reset spring 53 on the first reset member abuts against the inner wall of the first mounting hole 21, and the other end abuts against the side of the first connecting seat 511. One end of the reset spring 53 on the second reset member abuts against the inner wall of the side of the second mounting hole 31, and the other end abuts against the side of the second connecting seat 521. The side of 21 abuts against the socket 522. During the connection process of the plug 512 and the socket 522, the reset spring 53 can play a buffering role to prevent the first connector 511 from sliding and hitting the inner wall of the first mounting hole 21 and the second connector 521 from sliding and hitting the inner wall of the second mounting hole 31. On the other hand, when the plug 512 is removed from the socket 522, the reset spring 53 can make the first connector 511 move quickly to the middle position of the first mounting hole 21 and the second connector 521 move quickly to the middle position of the second mounting hole 31.

[0035] Reference Figure 2 , Figure 3 and Figure 4 A flaring ring 54 is fixedly connected to the openings of multiple sockets 522 facing the plug 512. The flaring ring 54 is shaped to open upwards and outwards. The sum of the heights of the sockets 522 and the flaring ring 54 is the same as the height of the plug 512, so that the plug 512 can be fully inserted into the sockets 522. When the plug 512 is inserted into the sockets 522, the plug 512 can be moved to a position above the sockets 522 to initially align the plug 512 and the sockets 522 so that the length direction of the multiple plugs 512 is approximately the same as the length direction of the multiple sockets 522. Then, during the slow descent of the high-voltage cabinet 2, the end of the plug 512 first contacts the flaring ring 54. During the gradual descent, the flaring ring 54 can play a guiding role, so that the multiple sockets 522 gradually change to the correct position, thereby allowing the plug 512 to be accurately inserted into the sockets 522.

[0036] Two sockets 522 located at opposite ends of the plurality of sockets 522 are symmetrically provided with snap-fit ​​members 55 for connecting to corresponding plugs 512. Each snap-fit ​​member 55 includes a rectangular snap-fit ​​plate 551 that slides horizontally through the socket 522. A groove 552 is provided on the socket 522, in which the snap-fit ​​plate 551 slidably engages. A slot 553 is provided on the side of the socket 522, in which the snap-fit ​​plate 551 is inserted. When the plug 512 is inserted into the socket 522, the snap-fit ​​plate 551 can be inserted precisely into the slot 553. The snap-fit ​​member 55 also includes a U-shaped clip 554 fixed to the side of the socket 522. The opening of the U-shaped clip 554 faces the snap-fit ​​plate 551, and the U-shaped clip 554 spans across the snap-fit ​​plate 551. A snap-fit ​​spring 555 is provided inside the U-shaped clip 554. One end of the spring 55 is fixed to the outward-facing side of the snap-fit ​​plate 551, and the other end is fixed to the U-shaped clip 554. When the snap-fit ​​plate 551 slides outward, the snap-fit ​​spring 555 is compressed. The four sides of the end face of the plug 512 facing the socket 522 are all set with gradually decreasing slopes 5121. When the plug 512 is inserted into the socket 522, the slopes 5121 on the plug 512 first abut against the snap-fit ​​plate 551, and then the plug 512 continues to be inserted into the socket 522. The snap-fit ​​plate 551 tends to slide outward, which compresses the snap-fit ​​spring 555. When the plug 512 is fully inserted into the socket 522, the snap-fit ​​spring 555, under the action of elasticity, allows the snap-fit ​​plate 551 to automatically insert into the slot 553, making the connection between the plug 512 and the socket 522 more secure and preventing the plug 512 and the socket 522 from falling off.

[0037] Reference Figure 2 , Figure 3 and Figure 4 A first accordion strip 56 is provided inside the first mounting hole 21 and in the gap on both sides of the first connecting seat 511. A second accordion strip 57 is provided inside the second mounting hole 31 and in the gap at both ends of the second connecting seat 521. The first accordion strip 56 can seal the gap at the first mounting hole 21. One end of the first accordion strip 56 is fixed to the inner wall of the first mounting hole 21, and the other end is fixed to the side of the first connecting seat 511. The second accordion strip 57 can seal the gap at the second mounting hole 31. One end of the second accordion strip 57 is fixed to the inner wall of the second mounting hole 31, and the other end is fixed to the end face of the second connecting seat 521. When the first connecting seat 511 or the second connecting seat 521 slides, it can squeeze or stretch the corresponding first accordion strip 56 and second accordion strip 57, always ensuring that the first mounting hole 21 and the second mounting hole 31 are in a closed state, preventing external impurities from entering the high-voltage cabinet 2 or the low-voltage cabinet 3.

[0038] Furthermore, an annular insulating cover 58 is connected between the high-voltage cabinet 2 and the low-voltage cabinet 3. The connecting device 5 is located inside the insulating cover 58. The upper surface of the insulating cover 58 abuts against the lower surface of the high-voltage cabinet 2, and the lower surface of the insulating cover 58 abuts against the upper surface of the low-voltage cabinet 3. The insulating cover 58 can prevent the electric sparks generated during the connection of the plug 512 and the socket 522 from splashing outward.

[0039] Reference Figure 2 , Figure 3 and Figure 4 Adjustable components 6 are provided on the lower surface of the high-voltage switchgear 2 near its four corners. Each adjustable component 6 includes a screw 61 vertically threaded onto the lower surface of the high-voltage switchgear 2. A support block 62 is fixedly connected to the lower end of the screw 61. Rotating ball bearings 63 are embedded in the lower surface of the support block 62 away from the screw 61. When the high-voltage switchgear 2 is installed on top of the low-voltage switchgear 3, the operator first adjusts the position of the support blocks 62. During installation, the four support blocks 62 first contact the upper surface of the low-voltage switchgear 3. Then, by rotating the ball bearings 63, the support blocks 62 move higher on the upper surface of the low-voltage switchgear 3. Positioning the high-voltage cabinet 2 allows the plug 512 and socket 522 to gradually align. Once aligned, rotate screw 61 to adjust the distance between support block 62 and high-voltage cabinet 2, gradually reducing the distance. Under the weight of high-voltage cabinet 2, plug 512 can be inserted into socket 522. After plug 512 and socket 522 are tightly engaged, rotate screw 61 again to tighten support block 62 onto the upper surface of low-voltage cabinet 3, preventing the connection between plug 512 and socket 522 from bearing the weight of high-voltage cabinet 2 alone.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high- and low-voltage power transmission equipment, characterized in that: The enclosure includes a housing (1) and a high-voltage cabinet (2), a low-voltage cabinet (3), and a distribution cabinet (4) disposed inside the housing (1). The high-voltage cabinet (2) and the low-voltage cabinet (3) are stacked on top of each other. The distribution cabinet (4) is disposed on one side of the high-voltage cabinet (2) and the low-voltage cabinet (3). The high-voltage cabinet (2) is connected to the low-voltage cabinet (3), and the low-voltage cabinet (3) is connected to the distribution cabinet (4). A connecting device (5) is provided between the high-voltage cabinet (2) and the low-voltage cabinet (3). The connecting device (5) includes a first connecting piece (51) installed on the high-voltage cabinet (2) and a second connecting piece (52) installed on the low-voltage cabinet (3). The lines in the high-voltage cabinet (2) are connected to the first connecting piece (51), and the lines in the low-voltage cabinet (3) are connected to the second connecting piece (52). The first connecting piece (51) and the second connecting piece (52) are plugged in and engaged. The first connector (51) includes multiple plugs (512) installed on the high-voltage cabinet (2) and connected to the internal wiring. The second connector (52) includes multiple sockets (522) installed on the low-voltage cabinet (3) and connected to the internal wiring. The number of plugs (512) is the same as the number of sockets (522), and the plugs (512) are plugged into the corresponding sockets (522). The first connector (51) also includes a first connector (511) slidably installed on the high-voltage cabinet (2), and the multiple plugs (512) are fixed on the first connector (511). The second connector (52) also includes a second connector (521) slidably installed on the low-voltage cabinet (3), and the multiple sockets (522) are fixed on the second connector (521). The sliding direction of the first connector (511) is perpendicular to the sliding direction of the second connector (521). A first reset member acting on the first connecting seat (511) is sleeved on the first guide rod (22) at both ends of the first connecting seat (511), and a second reset member acting on the second connecting seat (521) is sleeved on the second guide rod (32) at both ends of the second connecting seat (521); a plurality of plugs (512) are arranged on the first connecting seat (511) and a plurality of sockets (522) are arranged on the second connecting seat (521), the plurality of sockets (522) are connected to each other, and a flaring ring (54) facing the plurality of plugs (512) is fixedly connected to the opening of the plurality of sockets (522); The high-voltage cabinet (2) has a first mounting hole (21) on its surface facing the low-voltage cabinet (3). Inside the first mounting hole (21) and along the sliding direction of the first connecting seat (511), at least two parallel first guide rods (22) are provided. The first connecting seat (511) is slidably mounted on the two first guide rods (22). The low-voltage cabinet (3) has a second mounting hole (31) on its surface facing the high-voltage cabinet (2). Inside the second mounting hole (31) and along the sliding direction of the second connecting seat (521), at least two parallel second guide rods (32) are provided. The second connecting seat (521) is slidably mounted on the two second guide rods (32). A first gusseted sealant strip (56) is provided inside the first mounting hole (21) excluding the gap of the first connecting seat (511). A second gusseted sealant strip (57) is provided inside the second mounting hole (31) excluding the gap of the second connecting seat (521).

2. The high and low voltage power transmission equipment according to claim 1, characterized in that: Two of the sockets (522) located at both ends are symmetrically provided with snap-fit ​​members (55) on their sides. Each snap-fit ​​member (55) includes a snap-fit ​​plate (551) that is slidably disposed on the socket (522). A slot (553) is provided on the side of the plug (512). The snap-fit ​​plate (551) passes through the socket (522) and is inserted into the slot (553).

3. A high- and low-voltage power transmission equipment according to claim 2, characterized in that: The snap-fit ​​component (55) also includes a snap-fit ​​spring (555) installed on the side of the socket (522). The snap-fit ​​spring (555) presses the snap-fit ​​plate (551) into the slot (553). The plug (512) is provided with bevels (5121) at all four edges facing the socket (522).

4. A high- and low-voltage power transmission equipment according to claim 1, characterized in that: A connection device (5) with the same structure is provided between the low-voltage cabinet (3) and the distribution cabinet (4).

Images