Energy-saving and environment-friendly medium-voltage ring main unit

Abstract

The invention relates to an energy-saving environment-friendly medium-voltage ring main unit, and relates to the technical field of ring main units, the energy-saving environment-friendly medium-voltage ring main unit comprises a cabinet body and a cabinet door installed on the cabinet body, the lower part of the cabinet body is provided with a cable chamber, and the upper part of the vertical inner wall of the cable chamber is fixedly provided with a plurality of binding posts side by side along the same horizontal plane; a substrate is fixedly arranged on the inner wall of the cable chamber, a positioning hole for the binding post to penetrate through is formed in the substrate, and a supporting plate which is located below the binding post and used for supporting the current transformer is fixedly arranged on the substrate in the horizontal direction; according to the current transformer, the supporting plate located below the binding post is fixedly arranged on the substrate in the horizontal direction, and the supporting plate is specially used for supporting the current transformer. By means of the design, the installation process of the current transformer is simplified, manual lifting is not needed to keep the height, labor cost is greatly saved, and meanwhile installation efficiency and safety are improved.

Description

Technical Field

[0001] The present application relates to the technical field of ring main units, and in particular to an energy-saving and environment-friendly medium-voltage ring main unit. Background Art

[0002] Medium-voltage ring main units (RMUs), as key secondary power distribution equipment, are widely used in medium-voltage distribution systems in power plants, substations, large residential areas, shopping malls, and electricity-consuming enterprises. With the acceleration and deepening of urban power grid construction and renovation in China, high-voltage power is being introduced directly into urban areas, penetrating deeper into load centers. Ring main units (RMUs) have emerged as an effective solution to address the growing load density in cities. By creating a closed ring network, RMUs significantly improve the continuity and reliability of power supply.

[0003] In the technical implementation of a ring main unit (RMU), a typical design consists of a cabinet body and doors. The interior of the cabinet is meticulously organized into functional areas such as the switch compartment, fuse compartment, operating mechanism compartment, and cable compartment. The switch compartment houses circuit breakers for circuit protection, while the cable compartment handles current transmission and monitoring. Specifically, three terminal blocks are fixed to the upper inner wall of the cable compartment. A current transformer is also installed within the cable compartment. These three terminal blocks pass through three through-holes in the current transformer to facilitate the connection of external cables.

[0004] To ensure accurate current measurement, a constant distance must be maintained between the outer surface of the terminal block and the inner wall of the current transformer's through-hole. Because the terminal block is securely fixed to the upper vertical wall of the cable compartment, the current transformer must also be installed at the same height. However, in practice, the installation of current transformers can be quite cumbersome. Due to the weight of the current transformer, one person typically needs to manually hold it at a constant height while another person tightens the screws with a tool. This process consumes a significant amount of manpower, and clearly leaves room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an energy-saving and environmentally friendly medium-voltage ring network cabinet to solve the problem of high manpower consumption during installation of current transformers in the above-mentioned related technologies.

[0006] The energy-saving and environmentally friendly medium-voltage ring network cabinet provided in this application adopts the following technical solutions: An energy-saving and environmentally friendly medium-voltage ring network cabinet comprises a cabinet body and a cabinet door mounted on the cabinet body, wherein a cable chamber is provided at the lower portion of the cabinet body, and a plurality of terminal posts are fixedly arranged side by side along the same horizontal plane on the upper portion of the vertical inner wall of the cable chamber; a base plate is fixedly provided on the inner wall of the cable chamber, and positioning holes for the terminal posts to pass through are opened on the base plate, and a support plate for supporting a current transformer is fixedly provided on the base plate in the horizontal direction and located below the terminal posts.

[0007] By adopting this technical solution, a support plate is also fixed horizontally to the baseplate below the terminal blocks, specifically for supporting the current transformer. This design not only simplifies the installation process of the current transformer by eliminating the need for manual lifting to maintain height, significantly saving labor costs, but also improves installation efficiency and safety. Furthermore, this design ensures a constant distance between the terminal blocks and the inner wall of the current transformer through-hole, thereby ensuring accurate current measurement.

[0008] Optionally, a plurality of diagonal support blocks are fixedly provided on the base plate and are located below the support plate, and the upper side surfaces of the diagonal support blocks are fixedly connected to the lower side surfaces of the diagonal support blocks.

[0009] By adopting this technical solution, the diagonal brace blocks, as a supplement to the supporting structure, effectively distribute and bear the weight of the current transformer and possible other loads, thereby reducing the direct load-bearing pressure on the support plate and extending the service life of the entire structure. Furthermore, the fixed connection method of the diagonal brace blocks ensures their stability during operation, preventing loosening or deformation that may affect the installation precision and measurement accuracy of the current transformer.

[0010] Optionally, two symmetrical limit plates are slidably provided on the side of the base plate facing the cabinet door along the same horizontal plane, and the sides of the two limit plates close to each other are provided with limit notches for the edge of the current transformer to be inserted into; guide rods are fixedly provided on the sides of the two limit plates away from each other, and a guide block is fixedly provided on the base plate, and a guide hole is provided on the guide block for the guide rod to pass through; the base plate is provided with an elastic extrusion part that drives the two limit plates to slide toward each other, and an adjusting part that keeps the two limit plates away from each other.

[0011] By adopting this technical solution, two symmetrical limit plates can slide along the same horizontal plane on the base plate, with the limit notches on them snapping into the edges of the current transformer, thereby achieving preliminary positioning and limiting of the current transformer. The design of the guide rods and guide holes ensures the stability and accuracy of the limit plates during sliding, preventing deviation or misalignment. More importantly, the provision of elastic extrusion members and adjustment members allows the limit plates to be adaptively adjusted according to the actual size of the current transformer, ensuring both convenient installation and secure fixation.

[0012] Optionally, the elastic extrusion member includes a plurality of first compression springs located between the limiting plate and the guide block, and two ends of the first compression springs are respectively fixedly connected to the side surfaces of the limiting plate and the guide block that are close to each other.

[0013] By adopting this technical solution, the elastic restoring force of the first compression spring is utilized to achieve automatic return of the limit plate and secure clamping of the current transformer. During installation, the first compression spring adaptively adjusts its clamping force, ensuring that the current transformer is securely fixed and protected from damage due to overtightening. This design also simplifies installation procedures, improves efficiency, and reduces labor costs.

[0014] Optionally, a first positioning rod is fixedly provided in the horizontal direction on the side of the limit plate away from the base plate, and a second positioning rod is fixedly provided on the lower edge of the base plate and located below the guide block, and the adjusting member includes an adjusting rope and an adjusting rod located below the support plate; one end of the adjusting rod is fixedly connected to the middle of the adjusting rope, and the two ends of the adjusting rope are respectively fixedly connected to the first positioning rods on the two limit plates, and the outer periphery of the adjusting rope is wrapped around the outer periphery of the two second positioning rods; when the adjusting rod is dragged in the direction away from the support plate, the two limit plates are kept away from each other through the adjusting rope.

[0015] By adopting this technical solution, when installing or removing a current transformer, one first manually applies force to slide the two limit plates away from each other, then tightens the adjustment rope to keep the two limit plates away from each other, allowing the current transformer to be easily inserted or removed. This design not only improves operational convenience but also ensures the stability and accuracy of the limit plates during the sliding process, avoiding equipment damage or safety hazards caused by improper operation.

[0016] Optionally, a positioning ring groove for the adjustment rope to be inserted into is provided on the outer circumference of the second positioning rod.

[0017] By adopting this technical solution, the positioning ring groove serves as a fixing point for the adjustment rope, ensuring that the adjustment rope can be stably wound around the first and second positioning rods when adjusting the position of the adjustment rod, and is less likely to slip or misalign. This allows operators to more easily and accurately control the sliding of the limit plate, improving the efficiency of installing and removing the current transformer.

[0018] Optionally, a push block is fixed on the outer periphery of the adjusting rod near the adjusting rope; a support through-hole for the adjusting rod to pass through the end away from the adjusting rope and a support groove for the adjusting rod to be inserted into the end away from the adjusting rope are provided on the bottom side of the supporting plate. When the adjusting rod is inserted into the supporting groove, the adjusting rope is tightened, so that the two limit plates remain away from each other; when the adjusting rod is inserted into and passes through the supporting through-hole, the adjusting rope is relaxed, and the two limit plates move toward each other under the action of the elastic extrusion member.

[0019] By adopting the above technical solution, the push block design not only increases the operator's grip area and improves operational comfort, but also makes the adjustment rod more stable during pushing, making it less likely to deflect. Furthermore, when the adjustment rod is inserted into the support groove, the adjustment rope is tightened, keeping the two limit plates away from each other. When the adjustment rod is inserted into and through the support hole, the adjustment rope is relaxed, causing the two limit plates to move toward each other under the action of the elastic extrusion member.

[0020] Optionally, the end portion of the adjusting rod extending to the upper side of the support plate can limit the current transformer on the support plate.

[0021] By adopting the above technical solution, when the adjusting rod is inserted into and passes through the supporting through hole, the upper end protrudes from the upper side of the supporting plate and can limit the current transformer installed on the supporting plate, thereby enhancing the installation stability of the current transformer.

[0022] Optionally, a locking rod is slidably provided on the bottom side of the support plate, and a locking groove is provided on the base plate for the end of the locking rod to slide into; an elastic reset member is provided on the bottom side of the support plate to drive the locking rod out of the locking groove, and a guiding inclined surface is provided on the end edge of the locking rod away from the base plate; when the adjusting rod passes through the supporting through hole, the push block squeezes the locking rod along the guiding inclined surface, so that the locking rod is stuck in the locking groove; when the adjusting rod is close to the end of the adjusting rope and abuts against the bottom side of the support plate, the push block is on the side of the adjusting rod away from the locking rod, thereby releasing the squeezing of the locking rod.

[0023] By adopting this technical solution, as the adjustment rod penetrates the support hole and pushes the current transformer into place, the locking rod automatically engages the locking groove, firmly locking the support plate. When the support plate needs to be adjusted, the locking mechanism can be easily released by simply applying force to the push block via the adjustment rod, making operation simple and quick. Furthermore, the provision of an elastic return element ensures that the locking rod quickly returns to its original position after being released from compression, ready for the next locking operation.

[0024] Optionally, the elastic return member includes a spring, a limit block fixed to the bottom side of the support plate, and a stop block fixed to the outer periphery of the locking rod, the limit block is provided with a limit through hole for the locking rod to pass through, the stop block is located on the side of the locking rod away from the substrate, and the two ends of the spring are respectively fixedly connected to the side surfaces of the stop block and the limit block that are close to each other.

[0025] With this technical solution, when the adjusting rod pushes the push block along the guide slope to press against the locking rod, the spring is compressed and stores elastic potential energy. When the adjusting rod releases its pressure on the push block, the spring quickly releases the energy, pushing the block and locking rod back into place, allowing the locking rod to snap into the locking groove and achieve a secure lock. This design not only simplifies the locking and unlocking process but also improves the structural stability and reliability, ensuring the safety and stability of the current transformer during installation.

[0026] In summary, this application has the following beneficial technical effects: A support plate is fixed horizontally to the baseplate, located below the terminal blocks. This support plate is specifically designed to support the current transformer. This design not only simplifies the installation process of the current transformer by eliminating the need for manual lifting to maintain height, significantly saving labor costs, but also improves installation efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a front view of the overall structure of Example 1 of the present application; Figure 2 This is a left side view of the overall structure of Example 1 of the present application; Figure 3 This is a partial cross-sectional structural diagram of the installation and cooperation between the base plate and the support plate embodied in Example 1 of the present application; Figure 4 This is a partial cross-sectional structural diagram of the installation and coordination of the diagonal support block according to Example 1 of the present application; Figure 5 This is a partial cross-sectional structural diagram of the second embodiment of the present application showing the installation and coordination of the limit plate and the adjustment member; Figure 6 This is a schematic diagram of the structure of the installation and coordination of the limit plate and the adjustment member in Example 2 of the present application; Figure 7 This is a partial cross-sectional structural diagram of Example 2 of the present application showing the adjustment rod inserted into the support sink; Figure 8 This is a partial cross-sectional structural diagram of Example 2 of the present application showing the adjustment rod inserted into the support groove; Figure 9 This is a structural diagram of the installation and cooperation of the elastic reset member in Example 2 of the present application.

[0029] In the figure, 1. cabinet body; 11. cable chamber; 12. terminal; 2. cabinet door; 3. base plate; 31. diagonal support block; 32. guide block; 321. guide hole; 33. locking groove; 34. positioning hole; 35. second positioning rod; 351. positioning ring groove; 4. support plate; 41. supporting through hole; 42. supporting recess; 5. limiting plate; 51. limiting notch; 52. guide rod; 53. first positioning rod; 6. elastic extrusion member; 61. first compression spring; 7. adjusting member; 71. adjusting rope; 72. adjusting rod; 721. push block; 8. locking rod; 81. guide slope; 9. elastic reset member; 91. spring; 92. limiting block; 93. stop block. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Example 1: Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 An energy-saving and environmentally friendly medium-voltage ring main unit comprises a cabinet body 1 and a cabinet door 2 mounted on the cabinet body 1, wherein a cable chamber 11 is provided at the lower portion of the cabinet body 1, and three terminal posts 12 are fixedly arranged side by side along the same horizontal plane on the upper portion of the vertical inner wall of the cable chamber 11; A base plate 3 is fixed to the inner wall of the cable chamber 11 by screws. Three positioning holes 34 are provided on the base plate 3 for the terminal posts 12 to pass through. A support plate 4 for supporting the current transformer is welded and fixed to the base plate 3 in the horizontal direction. Two diagonal support blocks 31 are fixed on the base plate 3 below the support plate 4, and the upper side of the diagonal support block 31 is fixedly connected to the edge of the lower side of the diagonal support block 31.

[0032] The implementation principle of the embodiment of this application is: In this ring main unit, three terminal blocks 12 are arranged side by side on the upper inner wall of the cable compartment 11 for power connection. To enhance structural stability and functionality, a base plate 3 is fixed to the inner wall of the cable compartment 11 with screws. Positioning holes 34 are provided on the base plate 3 to precisely align with the positions of the terminal blocks 12, ensuring convenient and accurate wiring operations. A support plate 4 is welded horizontally to the base plate 3, specifically for supporting the current transformer. This design not only improves the installation stability of the current transformer but also facilitates accurate current measurement and protection.

[0033] Example 2: Reference Figure 5 and Figure 6The embodiment of the present application differs from the embodiment 1 in that two symmetrical limiting plates 5 are slidably provided on the side of the base plate 3 facing the cabinet door 2 along the same horizontal plane, and limiting notches 51 for the edge of the current transformer to be inserted into are provided on the sides of the two limiting plates 5 that are close to each other; A guide rod 52 is fixedly provided on the side surfaces of the two limit plates 5 that are away from each other. A guide block 32 is fixedly provided on the base plate 3. The guide block 32 has a guide hole 321 for the guide rod 52 to pass through. The base plate 3 is provided with an elastic extrusion member 6 that drives the two limit plates 5 to slide toward each other, and an adjustment member 7 that keeps the two limit plates 5 away from each other. Before the current transformer is installed, the adjustment member 7 is used to keep the two limit plates 5 away from each other to facilitate the installation of the current transformer; after the current transformer is installed on the support plate 4, under the action of the elastic extrusion member 6, the two limit plates 5 move toward each other, so that the edge of the current transformer is stuck in the corresponding limit notch 51.

[0034] Reference Figure 6 The elastic extrusion member 6 includes two first compression springs 61 located between the limit plate 5 and the guide block 32, wherein the first compression spring 61 is made of stainless steel, and the first compression spring 61 is in a compressed state, and the two ends of the first compression spring 61 are respectively fixedly connected to the side surfaces of the limit plate 5 and the guide block 32 close to each other.

[0035] Reference Figure 6 and Figure 7 A first positioning rod 53 is fixedly provided on the side of the limiting plate 5 away from the base plate 3 in the horizontal direction, and a second positioning rod 35 is fixedly provided on the lower edge of the base plate 3 and located below the guide block 32. A positioning ring groove 351 is provided on the outer periphery of the second positioning rod 35; The adjusting member 7 includes an adjusting rope 71 and an adjusting rod 72 located below the support plate 4; one end of the adjusting rod 72 is fixedly connected to the middle of the adjusting rope 71, and the two ends of the adjusting rope 71 are respectively fixedly connected to the first positioning rods 53 on the two limit plates 5, and the outer periphery of the adjusting rope 71 is wrapped around the positioning ring groove 351 on the outer periphery of the two second positioning rods 35.

[0036] Reference Figure 7 and Figure 8 A push block 721 is fixed on the outer periphery of the adjusting rod 72 near the adjusting rope 71; a supporting through hole 41 and a supporting sink 42 for inserting the end of the adjusting rod 72 away from the adjusting rope 71 are opened on the bottom side of the supporting plate 4, and the supporting sink 42 is located at a position where the supporting through hole 41 is away from the base plate 3; When the adjusting rod 72 is inserted into the supporting groove 42, the adjusting rope 71 is tightened, so that the two limit plates 5 remain away from each other; when the adjusting rod 72 is away from the end of the adjusting rope 71 and passes through the supporting through hole 41, the outer peripheral surface of the adjusting rod 72 is in interference fit with the inner wall of the supporting through hole 41, and at this time, one side of the pushing block 721 abuts against the bottom side of the supporting plate 4, so that the adjusting rope 71 is relaxed, and the two limit plates 5 move toward each other under the action of the elastic extrusion member 6; and the end of the adjusting rod 72 extending to the upper side of the supporting plate 4 can limit the current transformer on the supporting plate 4; Reference Figure 8 and Figure 9 A locking rod 8 is slidably provided on the bottom side of the support plate 4, wherein a locking groove 33 is provided on the base plate 3 for the end of the locking rod 8 to slide into; an elastic reset member 9 is provided on the bottom side of the support plate 4 to drive the locking rod 8 out of the locking groove 33, and a guiding inclined surface 81 is provided on the edge of the end of the locking rod 8 away from the base plate 3; When the adjusting rod 72 passes through the supporting through hole 41, one side of the pushing block 721 abuts against the bottom side of the supporting plate 4, and the pushing block 721 is located on the side of the adjusting rod 72 close to the base plate 3. At this time, the pushing block 721 squeezes the locking rod 8 along the guiding inclined surface 81, so that the locking rod 8 is stuck in the locking groove 33; when the adjusting rod 72 is inserted into the supporting groove 42, the squeezing of the locking rod 8 is released. At this time, under the action of the elastic reset member 9, the end of the locking rod 8 disengages from the locking groove 33.

[0037] Reference Figure 8 and Figure 9 The elastic return member 9 includes a spring 91, a limit block 92 fixed to the bottom side of the support plate 4, and a stop block 93 fixed to the outer periphery of the locking rod 8, wherein the limit block 92 is provided with a limit through hole for the locking rod 8 to pass through, and the stop block 93 is located on the side of the locking rod 8 away from the base plate 3. The two ends of the spring 91 are respectively fixedly connected to the side surfaces of the stop block 93 and the limit block 92 that are close to each other.

[0038] The implementation principle of the embodiment of this application is: Before installing the current transformer, the two limit plates 5 are kept apart by adjusting member 7 (adjusting rope 71 and adjusting rod 72) to provide space for installation. After installation, the adjusting member 7 is released, and the limit plates 5 automatically move toward each other under the action of the elastic extrusion member 6 (first compression spring 61), locking the current transformer. The design of the adjustment rod 72 not only controls the sliding of the limit plates 5, but also limits the current transformer at its end.

[0039] Unless otherwise defined, the terms or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "A" or "one" and other similar words do not indicate a quantity limit, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An energy-saving and environmentally friendly medium-voltage ring network cabinet, comprising a cabinet body (1) and a cabinet door (2) mounted on the cabinet body (1), wherein a cable chamber (11) is provided at the lower portion of the cabinet body (1), and a plurality of terminal posts (12) are fixedly arranged side by side along the same horizontal plane on the upper portion of the vertical inner wall of the cable chamber (11); It is characterized by: A base plate (3) is fixedly provided on the inner wall of the cable chamber (11), a positioning hole (34) for the terminal post (12) to pass through is provided on the base plate (3), and a support plate (4) is fixedly provided on the base plate (3) in a horizontal direction and is located below the terminal post (12) and is used to support the current transformer.

2. The energy-saving and environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: A plurality of diagonal support blocks (31) located below the support plate (4) are fixedly provided on the base plate (3), and the upper side surfaces of the diagonal support blocks (31) are fixedly connected to the lower side surfaces of the diagonal support blocks (31).

3. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 1, characterized in that: Two symmetrical limiting plates (5) are slidably provided on the side of the base plate (3) facing the cabinet door (2) along the same horizontal plane, and limiting notches (51) for the edges of the current transformer to be inserted into are provided on the sides of the two limiting plates (5) that are close to each other; A guide rod (52) is fixedly provided on the side surfaces of the two limit plates (5) that are away from each other; a guide block (32) is fixedly provided on the base plate (3); and a guide hole (321) for the guide rod (52) to pass through is provided on the guide block (32); and an elastic extrusion member (6) for driving the two limit plates (5) to slide toward each other and an adjustment member (7) for keeping the two limit plates (5) away from each other are provided on the base plate (3).

4. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 3, characterized in that: The elastic extrusion member (6) includes a plurality of first compression springs (61) located between the limiting plate (5) and the guide block (32), and the two ends of the first compression springs (61) are respectively fixedly connected to the side surfaces of the limiting plate (5) and the guide block (32) that are close to each other.

5. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 3, characterized in that: A first positioning rod (53) is fixedly provided on the side of the limiting plate (5) away from the base plate (3) in the horizontal direction, a second positioning rod (35) is fixedly provided on the lower edge of the base plate (3) and is located below the guide block (32), and the adjusting member (7) includes an adjusting rope (71) and an adjusting rod (72) located below the support plate (4); One end of the adjusting rod (72) is fixedly connected to the middle of the adjusting rope (71), and the two ends of the adjusting rope (71) are respectively fixedly connected to the first positioning rods (53) on the two limiting plates (5), and the outer periphery of the adjusting rope (71) is wound around the outer periphery of the two second positioning rods (35); when the adjusting rod (72) is dragged in a direction away from the support plate (4), the two limiting plates (5) are kept away from each other through the adjusting rope (71).

6. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 5, characterized in that: A positioning ring groove (351) for the adjustment rope (71) to be inserted is provided on the outer periphery of the second positioning rod (35).

7. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 5, characterized in that: A push block (721) is fixedly provided on the outer periphery of the adjusting rod (72) near the adjusting rope (71); a support through hole (41) for the end of the adjusting rod (72) away from the adjusting rope (71) to pass through, and a support sink groove (42) for the end of the adjusting rod (72) away from the adjusting rope (71) to be inserted, are provided on the bottom side of the supporting plate (4); When the adjusting rod (72) is inserted into the supporting groove (42), the adjusting rope (71) is tightened, so that the two limit plates (5) are kept away from each other; when the adjusting rod (72) is inserted into and passes through the supporting through hole (41), the adjusting rope (71) is loosened, and the two limit plates (5) move toward each other under the action of the elastic extrusion member (6).

8. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 7, characterized in that: The end portion of the regulating rod (72) extending to the upper side of the support plate (4) can limit the current transformer located on the support plate (4).

9. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 7, characterized in that: A locking rod (8) is slidably provided on the bottom side of the support plate (4), and a locking groove (33) is provided on the base plate (3) for the end of the locking rod (8) to slide into; an elastic reset member (9) is provided on the bottom side of the support plate (4) for driving the locking rod (8) to escape from the locking groove (33), and a guiding inclined surface (81) is provided on the edge of the end of the locking rod (8) away from the base plate (3); When the adjusting rod (72) passes through the supporting through hole (41), the pushing block (721) presses the locking rod (8) along the guiding inclined surface (81), so that the locking rod (8) is stuck in the locking groove (33); when the adjusting rod (72) is close to the end of the adjusting rope (71) and abuts against the bottom side of the supporting plate (4), the pushing block (721) is located on the side of the adjusting rod (72) away from the locking rod (8), thereby releasing the squeezing of the locking rod (8).

10. The energy-saving and environment-friendly medium-voltage ring main unit according to claim 9, characterized in that: The elastic reset member (9) comprises a spring (91), a limit block (92) fixed on the bottom side of the support plate (4), and a stop block (93) fixed on the outer periphery of the locking rod (8); the limit block (92) is provided with a limit through hole for the locking rod (8) to pass through; the stop block (93) is located on the side of the locking rod (8) away from the base plate (3); and the two ends of the spring (91) are respectively fixedly connected to the side surfaces of the stop block (93) and the limit block (92) that are close to each other.

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