Ring main unit for power system

Abstract

The ring main unit for the electric power system comprises a ring main unit box body and a supporting seat located below the ring main unit box body, a lifting frame is installed on the upper end face of the supporting seat in a height-adjustable mode, the upper end of the lifting frame is connected with the ring main unit box body through multiple sets of connecting column assemblies, and the height of the ring main unit box body is adjusted by adjusting the height of the lifting frame; connecting assemblies are arranged on the upper end faces of the supporting seats, and every two adjacent ring network box bodies are spliced into a whole through the connecting assemblies on the supporting seats below the ring network box bodies. The lifting frame is arranged on the supporting seat in a height-adjustable mode, the connecting column assembly arranged on the lifting frame is connected with the ring network box body, the defect that adjustment and disassembly and assembly are inconvenient due to a traditional screw connecting structure is overcome, the connecting assembly is arranged on the supporting seat, two adjacent ring network box bodies are rapidly and reliably spliced and used, and therefore the ring network box body connecting structure is simple in structure, convenient to use and high in practicability. The connecting structure is novel in structure, reasonable in design, convenient and rapid to assemble and disassemble, high in efficiency and low in cost, and a rapid and reasonable connecting structure is provided for disassembly, assembly and position adjustment of the looped network box body.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission and distribution electrical equipment, and in particular relates to a ring network cabinet for an electric power system. Background Art

[0002] Ring main unit is a group of electrical equipment (high voltage switchgear) installed in a metal or non-metallic insulated cabinet or made into an assembled interval ring main unit. Its core part uses load switches and fuses, which have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, large public buildings, factories and enterprises and other load centers.

[0003] Since the ring main unit is used to be installed in a box-type substation, and the existing installation method directly fixes the ring main unit inside the substation with screws, the installation structure has no adjustment effect and is not convenient for disassembly and assembly; secondly, since the ring main unit is mostly assembled by splicing two or more when used, and the splicing surfaces of the existing ring main units cannot be connected after splicing, which makes it inconvenient to connect the two ring main units for use. Therefore, there is an urgent need for a ring main unit for a power system to solve the above problems. Summary of the invention

[0004] The technical problem solved by the present invention is as follows: a ring network cabinet for an electric power system is provided, which solves the defects of inconvenient adjustment and disassembly caused by a traditional screw connection structure by arranging a lifting frame on a support base in a height-adjustable manner, and connecting the lifting frame to the ring network box through a connecting column assembly on the lifting frame, and realizes rapid and reliable splicing and connection of two adjacent ring network boxes by arranging a connecting assembly on the support base. The structure is novel, the design is reasonable, the assembly and disassembly are convenient and quick, the efficiency is high, the cost is low, and a rapid and reasonable connection structure is provided for the disassembly and adjustment of the ring network box.

[0005] The technical solution adopted by the present invention is: a ring network cabinet for an electric power system, comprising a ring network box and a support base located below the ring network cabinet, a lifting frame is installed on the upper end surface of the support base in a height-adjustable manner, and the upper end of the lifting frame is connected to the ring network box through multiple groups of connecting column assemblies, and the height of the ring network box can be adjusted by adjusting the height of the lifting frame; a connecting assembly is provided on the upper end surface of the support base, and two adjacent ring network boxes are spliced ​​into one by the connecting assembly on the support base below them.

[0006] Among them, limiting rods with U-shaped structures and openings facing downwards are fixed on the edge of the two side plates on the upper end surface of the support seat, and the corner positions at both ends of the bottom of the lifting frame are respectively mounted on the limiting rods on the same side, and an adjusting screw rod with a lower end rotatably connected to the support seat is threadedly connected to the middle part of the lifting frame plate surface, connecting column assemblies are arranged at the four corners of the upper end of the lifting frame, and the bottom surface of the ring network box is adaptably connected to the upper ends of the four groups of connecting column assemblies, and the height of the ring network box can be adjusted by rotating the adjusting screw rod.

[0007] Furthermore, an adjusting hand wheel is fixed to the upper end of the adjusting screw.

[0008] Furthermore, the lifting frame includes an I-shaped plate at the bottom and two T-shaped vertical plates symmetrically fixed to the upper surface of the I-shaped plate, and connecting column assemblies are fixed to both ends of the upper end surfaces of the two T-shaped vertical plates.

[0009] The lockhole that is formed on the upper end of the hinge part of each frame is formed on the upper surface of the lockhole, and the lockhole engages with the upper end of the hinge part respectively on the hinge part of each frame, and the lockhole engages with the upper end of the hinge part.

[0010] Furthermore, the connecting assembly includes a connecting seat and a connecting screw, and a U-shaped connecting seat with an opening facing upward is fixed in the middle of both side plates on the upper plate surface of the support seat, one end of the connecting screw is located in the U-shaped groove of one of the connecting seats and is rotatably connected to the connecting seat, and an extrusion ring is threadedly connected to the connecting screw, and the other end of the connecting screw is located in the U-shaped groove of the connecting seat on the same side of the adjacent support seat, and the gear rod fixed to the other end of the connecting screw is located on the outside of the connecting seat, and the extrusion ring is rotated to press against the inner side of the connecting seat to achieve the splicing and fixed connection of two adjacent ring network boxes.

[0011] Furthermore, openings communicating with the interior of the ring network box are provided on the outer walls on both sides of the ring network box, and the grille cover plates covering the openings are detachably fixed to the ring network box by a plurality of connecting bolts.

[0012] The advantages of the present invention compared with the prior art are:

[0013] 1. This technical solution is to set a lifting frame on the support seat, which is sleeved on the limit rod and can move up and down. The height of the lifting frame is adjusted by rotating the adjusting screw rod whose lower end is rotatably connected to the middle part of the support seat and threadedly connected to the middle part of the lifting frame plate, so as to realize the rapid adjustment of the overall height of the ring network box. The adjustment structure is stable and reliable, and the height adjustment range is large.

[0014] 2. This technical solution adopts a connecting column assembly including a column, bolts and an extruded support rod to detachably connect the lifting frame and the ring network box. The connecting column assembly is unlocked or locked by rotating the extruded support rod to move it out or embed it into the slot. The locking and unlocking process is simple and fast, which facilitates the rapid disassembly and assembly of the ring network box in the box-type substation;

[0015] 3. This technical solution adopts a connection assembly including a connection seat and a connection screw. After the stop rod at the outer end of the connection screw is positioned on the outer side of the adjacent connection seat, the extrusion ring on the connection screw is rotated to make it close to the inner side of the adjacent connection seat, so as to realize the splicing and fixed connection of two adjacent ring network boxes. The splicing structure is simple, and the splicing and disassembly are convenient and fast, and it saves time and effort, providing convenience for the splicing and connection of two adjacent ring network boxes.

[0016] 4. This technical solution has a novel structure, reasonable design, convenient and quick assembly and disassembly, high efficiency, and low cost. It can realize the rapid and reliable splicing and connection of two adjacent ring network boxes, solve the defects of inconvenient adjustment and disassembly caused by the traditional screw connection structure, and provide a fast and reasonable connection structure for the disassembly and adjustment of the ring network box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the ring network box structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the support base of the present invention and various components installed on the support base;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting column assembly of the present invention;

[0021] Figure 5 This is a cross-sectional view of the connection position between the movable limiting frame and the column of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention Figure 1-5, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0025] Ring main units for power systems, such as Figure 1-5 As shown, it includes a ring network box 1 and a support base 3 located below the ring network cabinet 1, a lifting frame 4 is installed on the upper end surface of the support base 3 in an adjustable height, and the upper end of the lifting frame 4 is connected to the ring network box 1 through multiple groups of connecting column components 5, and the height of the ring network box 1 is adjusted by adjusting the height of the lifting frame 4; a connecting component 6 is provided on the upper end surface of the support base 3, and two adjacent ring network boxes 1 are spliced ​​into one through the connecting component 6 on the support base 3 below them.

[0026] like Figure 3As shown, the specific lifting structure for lifting the lifting frame 4 provided on the support seat 3 is as follows: the upper end surface of the support seat 3 is fixed with a U-shaped limit rod 31 with an opening facing downward, and the two corners at the bottom of the lifting frame 4 are respectively mounted on the limit rod 31 on the same side, and the middle part of the lifting frame 4 plate surface is threadedly connected with an adjusting screw rod 32 with the lower end rotatably connected to the support seat 3, and the four corners of the upper end of the lifting frame 4 are provided with connecting column assemblies 5, and the bottom surface of the ring network box 1 is adapted to fit the upper ends of the four groups of connecting column assemblies 5. The height of the ring network box 1 is adjusted by rotating the adjusting screw rod 32; specifically, an adjusting hand wheel is fixed to the upper end of the adjusting screw rod 34; in the above structure, a lifting frame 4 is provided on the support seat 3, which is sleeved on the limit rod 31 and can move up and down, and the height of the lifting frame 4 is adjusted by rotating the adjusting screw rod 32 which is connected to the middle part of the support seat 3 and is threadedly connected to the middle part of the plate surface of the lifting frame 4 by the lower end, thereby realizing the rapid adjustment of the overall height of the ring network box 1, the adjustment structure is stable and reliable, and the height adjustment range is large;

[0027] like Figure 3 As shown, the structure of the lifting frame 4 is as follows: the lifting frame 4 includes an I-shaped plate 42 at the bottom and two T-shaped vertical plates 41 symmetrically fixed to the upper plate surface of the I-shaped plate 42, and connecting column assemblies 5 are fixed to both ends of the upper end surfaces of the two T-shaped vertical plates 41.

[0028] like Figure 4-5 As shown, the specific structure of the connecting column assembly 5 is as follows: the connecting column assembly 5 includes a column 55, a bolt 54 and an extruded support rod 53, the lower end of the column 55 is fixed to the upper end face of the T-shaped vertical plate 41 in the lifting frame 4, and the outer surface of the upper half of the column 55 is symmetrically provided with slots 51 extending to its top surface on both sides, and the two slots 51 are connected through a through hole 57, and a movable limit frame 52 is provided inside the through hole 57, and the two ends are respectively located inside the corresponding side slots 51, and the bolt 54 passing through the through hole on the bottom surface of the ring network box 1 passes through the through hole on the upper end surface of the column 55 and is threadedly connected to the middle part of the movable limit frame 52, and the frame openings at both ends of the movable limit frame 52 are rotatably installed with rotating rods 58, and both ends of the rotating rod 58 are fitted with connecting ends The middle part of the rotating rod 58 is fixedly connected to the extrusion support rod 53 located below the movable limiting frame 52 and the upper end of which extends into the frame of the movable limiting frame 52, and the extrusion support rod 53 is rotated to move it out or embed it into the slot 51 to unlock or lock the connecting column assembly 5; in the above structure, the connecting column assembly 5 including the column 55, the bolt 54 and the extrusion support rod 53 is used to detachably connect the lifting frame 4 to the ring network box 1, and the extrusion support rod 53 is rotated to move it out or embed it into the slot 51 to unlock or lock the connecting column assembly 5. The locking and unlocking process is simple and fast, which facilitates the rapid disassembly and assembly of the ring network box 1 in the box-type substation;

[0029] Among them, the rotation angle range of the extrusion support rod 53 is 0~45°. When the extrusion support rod 53 rotates to 0°, the extrusion support rod 53 is embedded in the slot 51, and the bolt 54 is locked and cannot move up and down. Therefore, the ring network box 1 and the lifting frame 4 are reliably connected; when the extrusion support rod 53 rotates to 45°, at this time, the two extrusion support rods form a 90° angle, and the bolt 54 can rotate. When the movable limit frame 52 moves down to separate from the bolt 54, the ring network box 1 and the lifting frame 4 are removed. The above-mentioned method is convenient for the quick disassembly and assembly of the ring network box 1 and the lifting frame 4.

[0030] like Figure 1 , 3 As shown, the specific structure of the connecting assembly 6 is as follows: the connecting assembly 6 includes a connecting seat 61 and a connecting screw 62, and the connecting seats 61 with a U-shaped structure with an opening facing upward are fixed to the middle of the two side plates on the upper plate surface of the support seat 3, one end of the connecting screw 62 is located in the U-shaped groove of one of the connecting seats 61 and is rotatably connected to the connecting seat 61, and an extrusion ring 63 is threadedly connected to the connecting screw 62, and the other end of the connecting screw 62 is located in the U-shaped groove of the connecting seat 61 on the same side of the adjacent support seat 3, and a stop rod 64 fixed to the other end of the connecting screw 62 is located at the connecting seat 61, and by rotating the extrusion ring 63 to make it close to the inner side of the connecting seat 61, the splicing and fixed connection of two adjacent ring network boxes 1 is realized; in the above structure, a connecting assembly 6 including a connecting seat 61 and a connecting screw 62 is adopted. After the stop rod 64 at the outer end of the connecting screw 62 is positioned on the outer side of the adjacent connecting seat 61, the extrusion ring 63 on the connecting screw 62 is rotated to make it close to the inner side of the adjacent connecting seat 61, so as to realize the splicing and fixed connection of two adjacent ring network boxes 1. The splicing structure is simple, and the splicing and disassembly are convenient and fast, and it saves time and effort, providing convenience for the splicing and connection of two adjacent ring network boxes.

[0031] like Figure 2 As shown, the specific outer contour structure of the ring network box 1 is as follows: openings 11 communicating with the interior of the ring network box 1 are provided on the outer walls on both sides thereof, and the grille cover 2 covering the openings 11 is detachably fixed to the ring network box 1 by a plurality of connecting bolts.

[0032] Firstly, the support seat 3 and the lifting frame and connecting column assembly 5 are provided to support and fix the ring network box 1, and then the I-shaped plate 42 can be driven to rise and fall on the limit rod 31 by rotating the adjusting screw rod 32. Since the ring network box 1 is fixedly connected to the T-shaped vertical plate 41, the fixed ring network box 1 can be adjusted to rise and fall by rotating the adjusting screw rod 32, and the height supported by the ring network box 1 can be adjusted; when two ring network boxes 1 are used for splicing, the connecting screw 62 on a connecting seat 61 in one of the support seats 3 can be rotatably mounted on the connecting seat 61 on the same side of the other support seat 3, and then the extrusion ring 63 on the connecting screw 62 is rotated to squeeze the corresponding side wall of the connecting seat 61 on the other support seat 3, so that the connecting screw 62 is locked with the connecting seat 61, and the two adjacent support seats 3 are docked and locked, which facilitates the splicing between the two ring network boxes 1 and facilitates assembly.

[0033] The technical solution has a novel structure, reasonable design, convenient and quick assembly and disassembly, high efficiency and low cost, and can realize the rapid and reliable splicing and connection of two adjacent ring network boxes 1, solving the defects of inconvenient adjustment and disassembly caused by the traditional screw connection structure, and providing a fast and reasonable connection structure for the disassembly and adjustment of the ring network box 1.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Ring main unit for power system, characterized by: The invention comprises a ring network cabinet (1) and a support base (3) located below the ring network cabinet (1); the support base (3) has through holes at four corners for bolts to pass through and be fixedly connected to the installation position; a lifting frame (4) is installed on the upper end surface of the support base (3) in a height-adjustable manner, and the upper end of the lifting frame (4) is detachably fixedly connected to the ring network cabinet (1) through multiple groups of connecting column assemblies (5), and the height of the ring network cabinet (1) can be adjusted by adjusting the height of the lifting frame (4); a connecting assembly (6) is provided on the upper end surface of the support base (3), and two adjacent ring network cabinets (1) are detachably spliced ​​into one body through the connecting assembly (6) on the support base (3) below them.

2. The ring main unit for an electric power system according to claim 1, characterized in that: Limit rods (31) of a U-shaped structure with openings facing downward are fixed at both side plate edges of the upper end surface of the support seat (3), and the corner positions at both ends of the bottom of the lifting frame (4) are respectively mounted on the limit rods (31) on the same side. An adjusting screw rod (32) whose lower end is rotatably connected to the support seat (3) is threadedly connected to the middle part of the plate surface of the lifting frame (4). Connecting column assemblies (5) are provided at the four corners of the upper end of the lifting frame (4), and the bottom surface of the ring network box (1) is adaptively connected to the upper ends of the four groups of connecting column assemblies (5), and the height of the ring network box (1) can be adjusted by rotating the adjusting screw rod (32).

3. The ring main unit for an electric power system according to claim 2, characterized in that: An adjusting hand wheel is fixed to the upper end of the adjusting screw rod (34).

4. The ring main unit for an electric power system according to claim 1, characterized in that: The lifting frame (4) comprises an I-shaped plate (42) at the bottom and two T-shaped vertical plates (41) symmetrically fixed to the upper plate surface of the I-shaped plate (42), and connecting column assemblies (5) are fixed to both ends of the upper end surfaces of the two T-shaped vertical plates (41).

5. The ring main unit for an electric power system according to claim 1, characterized in that: The connecting column assembly (5) comprises a column (55), a bolt (54) and an extruded support rod (53); the lower end of the column (55) is fixed to the upper end of the T-shaped vertical plate (41) in the lifting frame (4); and notches (51) penetrating to the top surface are symmetrically opened on both sides of the outer surface of the upper half of the column (55); and the two notches (51) are connected through a through hole (57); and a movable limit frame (52) is arranged inside the through hole (57) with two ends respectively located inside the corresponding side notches (51); and the bolt (54) passing through the through hole on the bottom surface of the ring network box (1) passes through the upper end surface of the column (55). The through hole is threadedly connected to the middle of the movable limit frame (52); rotating rods (58) are rotatably installed in the frame openings at both ends of the movable limit frame (52); and both ends of the rotating rod (58) are fitted with return torsion springs (56) whose connecting ends are against the inner walls of the corresponding sides of the frame opening of the movable limit frame (52); the middle of the rotating rod (58) is fixedly connected to an extrusion support rod (53) located below the movable limit frame (52) and whose upper end extends into the frame opening of the movable limit frame (52); and the extrusion support rod (53) is rotated to move it out or embed it into the notch (51), thereby realizing unlocking or locking of the connecting column assembly (5).

6. The ring main unit for an electric power system according to claim 1, characterized in that: The connection assembly (6) comprises a connection seat (61) and a connection screw (62). A connection seat (61) with a U-shaped structure and an opening facing upward is fixed along the middle of both side plates on the upper plate surface of the support seat (3). One end of the connection screw (62) is located in the U-shaped groove of one of the connection seats (61) and is rotatably connected to the connection seat (61). An extrusion ring (63) is threadedly connected to the connection screw (62). The other end of the connection screw (62) is located in the U-shaped groove of the connection seat (61) on the same side of the adjacent support seat (3). The stopper rod (64) fixed to the other end of the connection screw (62) is located outside the connection seat (61). The extrusion ring (63) is rotated to press against the inner side of the connection seat (61), thereby realizing the splicing and fixed connection of two adjacent ring network boxes (1).

7. The ring main unit for a power system according to any one of claims 1 to 6, characterized in that: The outer walls on both sides of the ring network box (1) are provided with openings (11) communicating with the interior thereof, and the grille cover plate (2) covering the openings (11) is detachably fixed to the ring network box (1) by means of a plurality of connecting bolts.

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