Inlet wire insulator structure of ring main unit

Abstract

The utility model discloses an inlet wire insulator structure of a ring main unit, which belongs to the technical field of ring main unit insulators and comprises a fixing ring mounted on the wall of the ring main unit, an insulator body and a mounting ring fixedly sleeved on the insulator body, and the inner side wall of the fixing ring and the outer side wall of the mounting ring are fixedly connected with a sealing mechanism. Two symmetrically-arranged elastic clamping buckle mechanisms are arranged in the side walls of the two sides of the mounting ring, two symmetrically-arranged clamping grooves are formed in the side walls of the two sides of the fixing ring, and one ends of the two elastic clamping buckle mechanisms penetrate through the mounting ring and are inserted into the two clamping grooves correspondingly. According to the utility model, through the arrangement of the fixing ring, the mounting ring and the elastic buckle mechanism, the insulator body and the wall of the ring main unit can be conveniently assembled and disassembled, the operation is simple, manpower is saved, the subsequent maintenance and replacement of the insulator body are facilitated, the sealing performance of the connection part can be ensured through the arrangement of the sealing mechanism, and the leakage of insulating gas in the ring main unit is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ring main unit insulators, and particularly relates to a structure of an incoming line insulator of a ring main unit. Background Technique

[0002] A ring main unit is a set of power transmission and distribution electrical equipment installed in a metal or non-metal insulated cabinet body or made into a assembled sectionalized ring main unit power supply unit. Its core part adopts a load switch and a fuse. It is widely used in distribution substations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and industrial enterprises. The inner side end of the central conductor in the incoming and outgoing line busbars in the ring main unit and the insulator passing through the cabinet wall board are fixedly connected through fasteners to realize the incoming and outgoing lines of the switch cabinet.

[0003] In a Chinese patent for a ring main unit incoming line insulator device (patent number: CN117458320A), the device includes: an epoxy resin body, the first end of the epoxy resin body is exposed to the air; the second end of the epoxy resin body is sealed in an air box; a plurality of umbrella skirt structures are arranged on the outer peripheral surface near the first end; a protective cover structure is arranged on the outer peripheral surface near the second end; a flange structure is arranged in the outer peripheral space between the umbrella skirt structure and the protective cover structure; a plurality of inserts are arranged in the flange structure; a plurality of notches are arranged on the axial end surface of the flange structure; a sealing structure is arranged through the notches; a conductor penetrates through the epoxy resin body; an induction coil is arranged on one side of the conductor and the epoxy resin body near the second end and the flange structure. This device can realize that the ring main unit is connected to the PT through a copper bar. Compared with the cable connection method, the copper bar connection is simpler and more reliable, not easily damaged, and reduces the material cost, labor cost, and later maintenance cost. However, in this device, the insulator body and the ring main unit cabinet wall are fixedly connected through threaded fasteners. Tools are required for the installation and disassembly process, the operation steps are relatively cumbersome, the installation and disassembly efficiency is low, it is not convenient for subsequent inspection or replacement of the insulator, and at the same time, the problem of the sealing performance of the installation connection between the insulator body and the ring main unit cabinet wall also needs to be considered to avoid leakage of insulating gas. Content of the Utility Model

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide an incoming line insulator structure for a ring network cabinet. By arranging a fixing ring, a mounting ring and an elastic snap-fit ​​mechanism, the installation and fixation of the insulator body can be completed by simply toggling a lever. Compared with fixing with bolts, this structure is convenient for the installation and disassembly of the insulator body and the cabinet wall of the ring network cabinet, and the operation is simple, manpower is saved, and it is convenient for the subsequent inspection and replacement of the insulator body; it solves the problem that the insulator body and the cabinet wall of the ring network cabinet in the device proposed in the background technology are fixedly connected by threaded fasteners, the installation and disassembly process requires the use of tools, the operation steps are relatively cumbersome, the installation and disassembly efficiency is low, and it is not convenient for the subsequent inspection or replacement of the insulator.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: The utility model provides a ring network cabinet incoming line insulator structure, comprising: a fixing ring installed on the wall of the ring network cabinet, an insulator body and a mounting ring fixedly sleeved on the insulator body, the inner side wall of the fixing ring and the outer side wall of the mounting ring are fixedly connected with a sealing mechanism, two symmetrically arranged elastic buckle mechanisms are arranged in the side walls of the mounting ring, two symmetrically arranged card grooves are opened on the side walls of the fixing ring, and one end of the two elastic buckle mechanisms penetrates the mounting ring and is respectively inserted into the two card grooves;

[0006] The elastic buckle mechanism includes a sliding cavity provided in the mounting ring, a slider being slidably connected in the sliding cavity, a compression spring being fixedly connected between the inner bottom wall of the sliding cavity and the slider, a shift rod being fixedly connected to one side of the slider, a sliding opening communicating with the sliding cavity is provided on the outer side wall of the mounting ring, one end of the shift rod passes through the sliding opening, a clamping block is fixedly connected to the side of the slider away from the compression spring, and one end of the clamping block passes through the mounting ring and is inserted into the clamping groove.

[0007] Preferably, the sealing mechanism includes a first sealing ring fixed on the inner wall of the fixing ring and a second sealing ring fixed on the outer wall of the mounting ring, the inner diameter of the first sealing ring matches the outer diameter of the second sealing ring, the inner wall of the first sealing ring is provided with a first through hole connected to the card slot, and the side wall of the second sealing ring is provided with a second through hole corresponding to the card block.

[0008] Preferably, two symmetrically arranged positioning grooves are formed on the inner walls on both sides of the first sealing ring, and two positioning blocks corresponding to the two positioning grooves are fixedly connected to the side walls on both sides of the second sealing ring.

[0009] Preferably, a sealing sleeve is fixedly connected to a side wall of the first sealing ring close to the insertion end of the insulator body, and a sealing head matched with the sealing sleeve is fixedly connected to a side wall of the fixing ring.

[0010] Preferably, the cross-sections of the sealing sleeve and the sealing head are both arranged in a conical structure.

[0011] Preferably, the inner walls on both sides of the sliding opening are frictionally connected to the side walls on both sides of the lever.

[0012] Preferably, a sliding hole communicating with the sliding cavity is formed on the side wall of the mounting ring, and the clamping block is disposed through the sliding hole.

[0013] Preferably, the fixing ring and the wall of the ring network cabinet, and the insulator body and the side wall of the mounting ring are fixedly connected by welding.

[0014] The beneficial effects of the utility model are:

[0015] 1. In the utility model, by setting a fixing ring, a mounting ring and an elastic snap mechanism, it is only necessary to move the lever to drive the block fixed to the slider to move. At this time, the compression spring is squeezed and contracted by the slider to generate elastic force until the block is completely retracted into the slot. At this time, the mounting ring can be smoothly inserted into the fixing ring, and then the lever is released, and the elastic force of the compression spring is used to push the block to automatically insert into the slot and tighten it, which can limit the displacement of the mounting ring, thereby realizing the installation and fixation of the insulator body. Compared with fixing with bolts, this structure is convenient for the installation and disassembly of the insulator body and the wall of the ring network cabinet, is simple to operate, saves manpower, improves work efficiency, and is convenient for subsequent inspection and replacement of the insulator body.

[0016] 2. In the utility model, by providing a sealing mechanism, when the mounting ring on the insulator body is inserted into the fixing ring on the ring network cabinet, the second sealing ring is pressed against the first sealing ring, so that the connection between the fixing ring and the mounting ring can be sealed. At the same time, when the sealing head is pressed against the sealing sleeve, the sealing performance of the connection can be further improved to avoid leakage of insulating gas in the ring network cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing ring in the utility model.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing ring in the utility model.

[0021] Figure 4 This is a three-dimensional structural schematic diagram of the insulator body and the mounting ring in the present utility model.

[0022] Figure 5 This is a cross-sectional structural schematic diagram of the mounting ring in the present utility model.

[0023] Explanation of reference numerals: 1 - fixing ring, 2 - insulator body, 3 - mounting ring, 4 - card slot, 5 - sliding cavity, 6 - slider, 7 - compression spring, 8 - lever, 9 - sliding opening, 10 - clamping block, 11 - first sealing ring, 12 - second sealing ring, 13 - first through hole, 14 - second through hole, 15 - positioning groove, 16 - positioning block, 17 - sealing sleeve, 18 - sealing head. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment 1:

[0026] As Figures 1 to 5 shown, this embodiment provides a structure of a ring main unit incoming line insulator, including: a fixing ring 1 installed on the cabinet wall of the ring main unit, an insulator body 2, and a mounting ring 3 fixedly sleeved on the insulator body 2. One end of the insulator body 2 is used for connecting and fixing the external copper bar of the ring main unit, and the other end of the insulator body 2 is used for connecting and fixing the internal copper bar of the ring main unit. This is prior art, so no further explanation will be given here. A sealing mechanism is fixedly connected between the inner side wall of the fixing ring 1 and the outer side wall of the mounting ring 3. Two symmetrically arranged elastic snap mechanisms are provided in the two side walls of the mounting ring 3. Two symmetrically arranged card slots 4 are opened in the two side walls of the fixing ring 1. One end of each of the two elastic snap mechanisms penetrates through the mounting ring 3 and is respectively inserted into the two card slots 4, so as to insert and install the insulator on the cabinet wall of the cabinet. When the insulator needs to be replaced, there is no need to damage the cabinet and internal components, reducing the operation and maintenance cost;

[0027] The elastic snap mechanism includes a sliding cavity 5 opened in the mounting ring 3. A slider 6 is slidably connected in the sliding cavity 5. A compression spring 7 is fixedly connected between the inner bottom wall of the sliding cavity 5 and the slider 6. One side of the slider 6 is fixedly connected with a lever 8. A sliding opening 9 communicated with the sliding cavity 5 is opened on the outer side wall of the mounting ring 3. One end of the lever 8 penetrates through the sliding opening 9. One side of the slider 6 away from the compression spring 7 is fixedly connected with a clamping block 10. One end of the clamping block 10 penetrates through the mounting ring 3 and is inserted into the card slot 4.

[0028] The inner walls on both sides of the sliding opening 9 are frictionally connected to the side walls on both sides of the lever 8, so that the lever 8 maintains a straight up and down displacement.

[0029] A sliding hole communicating with the sliding cavity 5 is provided on the side wall of the mounting ring 3, and the clamping block 10 is arranged through the sliding hole, which is convenient for the displacement of the clamping block 10.

[0030] The fixing ring 1 and the cabinet wall of the ring main unit, and between the insulator body 2 and the side wall of the mounting ring 3 are fixedly connected by welding, and the connection is reliable.

[0031] Principle of this embodiment: When it is necessary to install and disassemble the insulator body 2 and the cabinet wall of the ring main unit, first, only need to move the lever 8 to drive the clamping block 10 fixed to the slider 6 to move. At this time, the compression spring 7 is squeezed and contracted by the slider 6 to generate elastic force until the clamping block 10 is completely retracted into the card slot 4. At this time, the mounting ring 3 can be smoothly inserted into the fixing ring 1. Then, release the lever 8, and use the elastic force of the compression spring 7 to push the clamping block 10 to automatically insert into the card slot 4 and abut tightly, which can limit the displacement of the mounting ring 3, thereby realizing the installation and fixation of the insulator body 2. Compared with fixing by bolts, this structure is convenient for the installation and disassembly of the insulator body 2 and the cabinet wall of the ring main unit, has simple operation, saves manpower, improves work efficiency, and is convenient for subsequent maintenance and replacement of the insulator body 2.

[0032] Embodiment Two:

[0033] As Figures 1 to 5 shown, on the basis of retaining all the technical features in the specific Embodiment One, in this embodiment: The sealing mechanism includes a first sealing ring 11 fixed to the inner wall of the fixing ring 1 and a second sealing ring 12 fixed to the outer side wall of the mounting ring 3. The inner diameter of the first sealing ring 11 matches the outer diameter of the second sealing ring 12. A first through hole 13 communicating with the card slot 4 is provided on the inner wall of the first sealing ring 11, and a second through hole 14 corresponding to the clamping block 10 is provided on the side wall of the second sealing ring 12, which is convenient for the clamping block 10 to be smoothly inserted into the card slot 4 for clamping.

[0034] Two symmetrically arranged positioning grooves 15 are provided on the inner walls on both sides of the first sealing ring 11, and two positioning blocks 16 corresponding to the two positioning grooves 15 are fixedly connected to the side walls on both sides of the second sealing ring 12. The positioning blocks 16 are inserted into the positioning grooves 15, which is convenient for the clamping block 10 to be aligned with the card slot 4 for clamping connection.

[0035] A sealing sleeve 17 is fixedly connected to the side wall of the first sealing ring 11 close to the insertion end of the insulator body 2, and a sealing head 18 matching the sealing sleeve 17 is fixedly connected to the side wall of the fixing ring 1. When the sealing head 18 abuts against the sealing sleeve 17, the sealing performance of the connection can be further improved, and the insulating gas in the ring main unit can be prevented from leaking.

[0036] The cross-sections of the sealing sleeve 17 and the sealing head 18 are both arranged in a conical structure, and the sealing effect is better.

[0037] Principle of this embodiment: When the mounting ring 3 on the insulator body 2 is inserted into the fixing ring 1 on the ring main unit, the second sealing ring 12 abuts against the first sealing ring 11, so as to seal the connection between the fixing ring 1 and the mounting ring 3, thereby preventing the insulating gas in the ring main unit from leaking.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A ring main unit incoming line insulator structure, characterized in that: include: A fixing ring (1) mounted on the wall of a ring network cabinet, an insulator body (2) and a mounting ring (3) fixedly sleeved on the insulator body (2), wherein the inner side wall of the fixing ring (1) and the outer side wall of the mounting ring (3) are fixedly connected with a sealing mechanism, two symmetrically arranged elastic buckle mechanisms are arranged in the side walls of the mounting ring (3), and two symmetrically arranged clamping grooves (4) are provided on the side walls of the fixing ring (1), and one end of the two elastic buckle mechanisms penetrates the mounting ring (3) and is respectively inserted into the two clamping grooves (4); The elastic buckle mechanism comprises a sliding cavity (5) provided in the mounting ring (3), a slider (6) being slidably connected in the sliding cavity (5), a compression spring (7) being fixedly connected between the inner bottom wall of the sliding cavity (5) and the slider (6), a shifting rod (8) being fixedly connected to one side of the slider (6), a sliding opening (9) being provided on the outer side wall of the mounting ring (3) and being communicated with the sliding cavity (5), one end of the shifting rod (8) being arranged to pass through the sliding opening (9), a clamping block (10) being fixedly connected to the side of the slider (6) away from the compression spring (7), one end of the clamping block (10) being arranged to pass through the mounting ring (3) and being inserted into the clamping groove (4).

2. A ring main unit incoming line insulator structure as claimed in claim 1, characterized in that: The sealing mechanism comprises a first sealing ring (11) fixed on the inner wall of a fixing ring (1) and a second sealing ring (12) fixed on the outer wall of a mounting ring (3); the inner diameter of the first sealing ring (11) matches the outer diameter of the second sealing ring (12); the inner wall of the first sealing ring (11) is provided with a first through hole (13) connected to the card slot (4); and the side wall of the second sealing ring (12) is provided with a second through hole (14) corresponding to the card block (10).

3. A ring main unit incoming line insulator structure as claimed in claim 2, characterized in that: Two symmetrically arranged positioning grooves (15) are provided on the inner walls on both sides of the first sealing ring (11), and two positioning blocks (16) corresponding to the two positioning grooves (15) are fixedly connected to the side walls on both sides of the second sealing ring (12).

4. A ring main unit incoming line insulator structure as claimed in claim 2, characterized in that: A sealing sleeve (17) is fixedly connected to a side wall of the first sealing ring (11) close to the insertion end of the insulator body (2), and a sealing head (18) matched with the sealing sleeve (17) is fixedly connected to a side wall of the fixing ring (1).

5. The ring main unit incoming line insulator structure according to claim 4, characterized in that: The cross sections of the sealing sleeve (17) and the sealing head (18) are both arranged in a conical structure.

6. The ring main unit incoming line insulator structure according to claim 1, characterized in that: The inner walls on both sides of the sliding opening (9) are frictionally connected to the side walls on both sides of the lever (8).

7. The ring main unit incoming line insulator structure according to claim 1, characterized in that: The side wall of the mounting ring (3) is provided with a sliding hole which is connected to the sliding cavity (5), and the clamping block (10) is arranged through the sliding hole.

8. The ring main unit incoming line insulator structure according to claim 1, characterized in that: The fixing ring (1) and the wall of the ring network cabinet, and the insulator body (2) and the side wall of the mounting ring (3) are fixedly connected by welding.

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