Solid insulation switch for ring main unit

Abstract

The utility model discloses a solid insulation switch for a ring main unit, which comprises a cabinet, the back of the cabinet is provided with a solid insulation cylinder, the front of the cabinet is provided with an upper isolation operation mechanism and a lower isolation operation mechanism, the cabinet is provided with a plurality of support columns, and the support columns are arranged on the cabinet. The support column is provided with a liftable and rotatable support platform, the support column is provided with a spring and abuts against the support platform, the upper isolation operation mechanism and the lower isolation operation mechanism are provided with side plates, and the side plates are provided with mounting holes for the support column to pass through. The upper isolation operation mechanism and the lower isolation operation mechanism can be fixedly connected with the case and can also be disconnected by rotating the fixing part, so that the disassembly and assembly efficiency is improved, and meanwhile, the elastic force of the spring also ensures that the upper isolation operation mechanism and the lower isolation operation mechanism are stably connected with the case; by means of the design, the product has the advantages of being convenient to assemble and improving assembling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of solid insulation switches, in particular to a solid insulation switch for a ring network cabinet. Background Art

[0002] Ring Main Unit (RMU) is an electrical device commonly used in ring network power supply. Its core components are load switches and fuses. Because the ring main unit is often installed on the distribution branch, the ring main unit is also considered a line switch cabinet. It is an important switching device for ring network power supply and terminal power supply.

[0003] Solid insulated ring main unit uses epoxy resin material as insulator and solid-sealed pole technology to organically combine vacuum interrupter, main conductive circuit and insulation support into a whole. Through the movement of the operating mechanism, it can realize the functions of opening and closing load current or fault current, isolating load, etc., thereby realizing the control of power supply and distribution system and the protection of equipment and personal safety.

[0004] The operating mechanism is divided into an upper isolation operating mechanism and a lower isolation operating mechanism. During the actual installation process, in order to ensure a stable connection between the operating mechanism and the chassis, it is usually necessary to fix the operating mechanism to the chassis using multiple fasteners. This installation method is not only time-consuming and labor-intensive, but also inconvenient for rapid disassembly or replacement of the operating mechanism during maintenance. Therefore, the applicant has made a useful design and found a solution to the above-mentioned problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional solid insulation switch design and provide a product that improves assembly efficiency and is easy to maintain.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] A solid insulated switch for a ring network cabinet comprises a chassis, a solid insulating cylinder is provided on the back of the chassis, an upper isolation operating mechanism and a lower isolation operating mechanism are provided on the front of the chassis, the chassis is provided with a plurality of support columns, the support columns are provided with a support platform that can be raised and lowered and rotated, the support columns are provided with springs and abut the support platform, the upper isolation operating mechanism and the lower isolation operating mechanism are provided with side panels, the side panels are provided with mounting holes for the support columns to pass through, a plurality of avoidance holes are provided at one end of the mounting hole, a fixing groove is provided on one side of the avoidance hole, fixing parts are provided on both sides of the support platform, and enter the avoidance hole, and the support platform is rotated to make the fixing part move into the fixing groove.

[0008] Preferably, a guide portion is provided at one end of the support column, and the guide portion is provided with an arc-shaped limiting groove. The outer wall of the support column is provided with a supporting portion, and is arranged below the guide portion.

[0009] Preferably, the support platform is provided with a limiting portion corresponding to the limiting groove, the limiting portion is provided with a fixing block, the fixing portion is arranged on the front side of the fixing block and is in a vertical relationship with the fixing block, and an operating portion is provided between the fixing blocks.

[0010] Preferably, the support platform is further provided with a pressure ring, a guide rod is provided between the support platform and the pressure ring, the guide rod is provided with a stop portion and is arranged below the support portion, one end of the spring abuts the support portion, and the other end abuts the pressure ring.

[0011] Preferably, the solid insulating tube is provided with an upper contact and a lower contact, the solid insulating tube is provided with an isolation chamber, the isolation chamber is provided with a contact portion and a vacuum arc chamber, the busbar conductor of the upper contact is electrically connected to the contact portion, and the busbar conductor of the lower contact is electrically connected to one end of the vacuum arc chamber.

[0012] Preferably, the upper isolation operating mechanism is provided with an upper isolation rotating shaft and is arranged in the chassis, and a plurality of first crank arms are provided on one side of the upper isolation rotating shaft.

[0013] Preferably, the lower isolation operating mechanism is provided with a lower isolation shaft and is arranged in the chassis. A plurality of second turning arms are provided on one side of the lower isolation shaft and are in the opposite direction to the first turning arm. The first turning arm and the second turning arm are provided with connecting holes.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model can fix the upper isolation operating mechanism and the lower isolation operating mechanism to the chassis, and can also release the connection between the two, only by rotating the fixing part, thereby accelerating the efficiency of assembly and disassembly. At the same time, the downward elastic force released by the spring not only increases the friction between the fixing part and the fixing groove, but also makes the upper isolation operating mechanism and the lower isolation operating mechanism tightly pressed on the support column under the influence of the spring elastic force, thereby ensuring a stable connection between the two. The above design makes the product have the advantages of easy assembly and improved assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a solid insulated switch for a ring main unit according to the present invention;

[0018] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle part;

[0019] Figure 3 This is a schematic cross-sectional view of a solid insulated switch for a ring main unit according to the present invention;

[0020] Figure 4 For this utility model Figure 3 A partial enlarged view of part B in the middle;

[0021] Figure 5 This is a schematic side cross-sectional view of a solid insulated switch for a ring main unit according to the present invention;

[0022] Figure 6 This is a partial exploded structural diagram of a solid insulated switch for a ring main unit according to the present invention;

[0023] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0024] Reference numerals: 1, chassis; 2, solid insulation cylinder; 3, upper isolation operating mechanism; 4, lower isolation operating mechanism; 5, support platform; 6, spring; 7, side plate; 8, connection hole;

[0025] 11. Support column; 12. Guide portion; 13. Support portion;

[0026] 121, limit slot;

[0027] 21. Upper contact; 22. Lower contact; 23. Isolation chamber; 24. Contact section; 25. Vacuum interrupter;

[0028] 31. Upper isolation shaft; 32. First crank arm;

[0029] 51. Lower isolation shaft; 43. Second crank arm;

[0030] 51. Limiting part; 52. Fixing block; 53. Operating part; 54. Pressure ring; 55. Guide rod;

[0031] 521, fixed part;

[0032] 71. Mounting hole; 72. Avoidance hole; 73. Fixing slot. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a 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 making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0036] Reference example Figures 1 to 6 A solid insulated switch for a ring network cabinet includes a chassis 1, a solid insulating cylinder 2 is provided on the back of the chassis 1, an upper isolation operating mechanism 3 and a lower isolation operating mechanism 4 are provided on the front of the chassis 1, the chassis 1 is provided with a plurality of support columns 11, the support columns 11 are provided with a support platform 5 that can be raised and lowered and rotated, the support columns 11 are provided with springs 6 and abut against the support platform 5, the upper isolation operating mechanism 3 and the lower isolation operating mechanism 4 are provided with side plates 7, the side plates 7 are provided with mounting holes 71 for the support columns 11 to pass through, one end of the mounting hole 71 is provided with a plurality of avoidance holes 72, one side of the avoidance hole 72 is provided with a fixing groove 73, both sides of the support platform 5 are provided with fixing parts 521, and enter the avoidance hole 72, and the support platform 5 is rotated to make the fixing part 521 move into the fixing groove 73;

[0037] It is worth mentioning that a guide portion 12 is provided at one end of the support column 11, and the guide portion 12 is provided with an arc-shaped limiting groove 121. The outer wall of the support column 11 is provided with a supporting portion 13, which is arranged below the guide portion 12. The guide portion 12 guides the mounting hole 71 into it, and the limiting groove 121 limits the range of rotation of the fixing portion 521. The supporting portion 13 provides a support point for the spring 6;

[0038] It is worth mentioning that the support platform 5 is provided with a limiting portion 51 corresponding to the limiting groove 121, the limiting portion 51 is provided with a fixing block 52, the fixing portion 521 is arranged on the front of the fixing block 52 and is perpendicular to the fixing block 52, and an operating portion 53 is provided between the fixing blocks 52. The limiting portion 51 provides fixation and support for the fixing block 52, and the operating portion 53 is used to drive the support platform 5 to rotate;

[0039] It is worth mentioning that the support platform 5 is also provided with a pressure ring 54. A guide rod 55 is provided between the support platform 5 and the pressure ring 54. The guide rod 55 is provided with a stop portion and is arranged below the support portion 13. One end of the spring 6 abuts the support portion 13, and the other end abuts the pressure ring 54. The elastic force of the spring 6 causes the limiting portion 51 to be tightly attached to the bottom of the limiting groove 121 through the pressure ring 54 and the guide rod 55. The stop ring limits the rising distance of the support platform 5 and, at the same time, protects the spring 6 from excessive compression.

[0040] It is worth mentioning that the solid insulating cylinder 2 is provided with an upper contact 21 and a lower contact 22, and the solid insulating cylinder 2 is provided with an isolation chamber 23. The isolation chamber 23 is provided with a contact portion 24 and a vacuum interrupter 25. The busbar conductor of the upper contact 21 is electrically connected to the contact portion 24, and the busbar conductor of the lower contact 22 is electrically connected to one end of the vacuum interrupter 25.

[0041] It is worth mentioning that the upper isolation operating mechanism 3 is provided with an upper isolation shaft 31 and is disposed in the chassis 1 , and a plurality of first crank arms 32 are provided on one side of the upper isolation shaft 31 ;

[0042] It is worth mentioning that the lower isolation operating mechanism 4 is provided with a lower isolation shaft 41 and is arranged in the chassis 1. A plurality of second crank arms 42 are provided on one side of the lower isolation shaft 41 and are in the opposite direction to the first crank arm 32. The first crank arm 32 and the second crank arm 42 are provided with connecting holes 8.

[0043] The installation steps of the upper isolation operating mechanism 3 and the lower isolation operating mechanism 4 of the present utility model are as follows;

[0044] When the cam 72 is in the closed position, the locking cam 73 is in the closed position, and the cam 73 is in the closed position, so that the cam 73 is locked.

[0045] The above design solution can make the product easy to assemble and improve assembly efficiency.

[0046] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A solid insulated switch for a ring main unit, comprising a chassis (1), a solid insulating cylinder (2) provided on the back of the chassis (1), an upper isolating operating mechanism (3) and a lower isolating operating mechanism (4) provided on the front of the chassis (1), characterized in that: The chassis (1) is provided with a plurality of support columns (11), and the support columns (11) are provided with a support platform (5) that can be raised and lowered and rotated. The support columns (11) are provided with springs (6) and abut against the support platform (5). The upper isolation operating mechanism (3) and the lower isolation operating mechanism (4) are provided with side panels (7). The side panels (7) are provided with mounting holes (71) for the support columns (11) to pass through. One end of the mounting hole (71) is provided with a plurality of avoidance holes (72), and one side of the avoidance hole (72) is provided with a fixing groove (73). Both sides of the support platform (5) are provided with fixing parts (521) that enter the avoidance hole (72) and rotate the support platform (5) so that the fixing parts (521) move into the fixing groove (73).

2. The solid insulated switch for a ring main unit according to claim 1, characterized in that: One end of the support column (11) is provided with a guide portion (12), and the guide portion (12) is provided with an arc-shaped limiting groove (121). The outer wall of the support column (11) is provided with a support portion (13) and is arranged below the guide portion (12).

3. The solid insulated switch for a ring main unit according to claim 2, characterized in that: The support platform (5) is provided with a limiting portion (51) corresponding to the limiting groove (121), the limiting portion (51) is provided with a fixing block (52), the fixing portion (521) is arranged on the front of the fixing block (52) and is in a vertical relationship with the fixing block (52), and an operating portion (53) is provided between the fixing blocks (52).

4. The solid insulated switch for a ring main unit according to claim 3, characterized in that: The support platform (5) is further provided with a pressure ring (54), a guide rod (55) is provided between the support platform (5) and the pressure ring (54), the guide rod (55) is provided with a stop portion and is arranged below the support portion (13), one end of the spring (6) abuts against the support portion (13), and the other end abuts against the pressure ring (54).

5. The solid insulated switch for a ring main unit according to claim 1, characterized in that: The solid insulating tube (2) is provided with an upper contact (21) and a lower contact (22), the solid insulating tube (2) is provided with an isolation chamber (23), the isolation chamber (23) is provided with a contact portion (24) and a vacuum interrupter (25), the busbar conductor of the upper contact (21) is electrically connected to the contact portion (24), and the busbar conductor of the lower contact (22) is electrically connected to one end of the vacuum interrupter (25).

6. The solid insulated switch for a ring main unit according to claim 1, characterized in that: The upper isolation operating mechanism (3) is provided with an upper isolation rotating shaft (31) and is arranged in the chassis (1). A plurality of first crank arms (32) are provided on one side of the upper isolation rotating shaft (31).

7. The solid insulated switch for a ring main unit according to claim 6, characterized in that: The lower isolation operating mechanism (4) is provided with a lower isolation rotating shaft (41) and is arranged in the chassis (1). A plurality of second turning arms (42) are provided on one side of the lower isolation rotating shaft (41) and are in the opposite direction to the first turning arm (32). The first turning arm (32) and the second turning arm (42) are provided with connecting holes (8).

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