Environment-friendly load switch for medium-voltage ring main unit

Abstract

The utility model relates to a switchgear technical field, specifically is a kind of load switch for environmental protection type medium voltage ring net cabinet, including load switch body, multiple protective cover are installed on load switch body, two positioning inserts are fixedly connected on protective cover, and positioning insert is engaged between load switch body, fixed structure is equipped on load switch body, and fixed structure includes guide rod and connecting plate, multiple guide rods are fixedly connected on load switch body, and same connecting plate is slidably connected on two adjacent guide rods, two clamping blocks are fixedly connected on connecting plate, clamping groove is equipped on positioning insert, and clamping block is engaged between adjacent clamping groove, spring is sleeved on guide rod, one end of spring is in contact with guide rod, the other end of spring is in contact with load switch body, and unlocking structure is equipped on load switch body;The quick disassembly of protective cover can be realized, thereby the time of load switch maintenance is shortened, and the efficiency of load switch maintenance is improved.

Description

Technical Field

[0001] This utility model relates to a load switch, specifically an environmentally friendly medium-voltage ring main unit load switch, belonging to the field of switchgear technology. Background Technology

[0002] The load switch for environmentally friendly medium-voltage ring main unit is the core control equipment of 10kV-35kV distribution network. It mainly undertakes the functions of line connection and disconnection, load switching and fault isolation. Its technical feature is that it uses dry air as insulation and arc extinguishing medium, completely replacing the traditional SF6 gas. It has been widely used in urban power grid transformation, new energy power station supporting facilities and distribution systems in ecologically sensitive areas. In order to ensure the operational safety of the equipment in high voltage and strong electric field environment and the sealing reliability of environmentally friendly medium, the load switch must be equipped with a protective cover to shield and protect the high voltage conductive components.

[0003] However, the protective cover on a traditional load switch is installed on the load switch with multiple bolts. Therefore, when the load switch is damaged and needs to be repaired, it is necessary to first use a wrench of a specific size to unscrew the multiple bolts used to fix the protective cover before the protective cover can be disassembled and the load switch can be repaired. At the same time, multiple bolts need to be turned when installing the protective cover. Turning the bolts repeatedly wastes time, which is inconvenient for the repair and maintenance of the load switch. Utility Model Content

[0004] The purpose of this utility model is to provide an environmentally friendly load switch for medium-voltage ring main units in order to solve the above problems. It enables quick disassembly and assembly of the protective cover, thereby shortening the time for load switch maintenance and improving the efficiency of load switch maintenance.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an environmentally friendly medium-voltage ring main unit load switch includes a load switch body, on which multiple protective covers are installed. Two positioning blocks are fixedly connected to the protective covers, and the positioning blocks engage with the load switch body. The load switch body is provided with a fixing structure, which includes guide rods and connecting plates. Multiple guide rods are fixedly connected to the load switch body, and the same connecting plate is slidably connected to two adjacent guide rods. Two locking blocks are fixedly connected to the connecting plate. The positioning blocks are provided with locking slots, and the locking blocks engage with adjacent locking slots. A spring is sleeved on the guide rod, with one end of the spring abutting against the guide rod and the other end of the spring abutting against the load switch body. The load switch body is provided with an unlocking structure.

[0006] Preferably, the overall cross-section of the positioning block is L-shaped, and the cross-section of one end of the positioning block is trapezoidal.

[0007] Preferably, the overall cross-section of the card block is trapezoidal, and the two card blocks are symmetrically distributed about the middle of the connecting plate.

[0008] Preferably, the cross-section of one end of the guide rod is convex, and the two guide rods are symmetrically distributed about the middle of the connecting plate.

[0009] Preferably, the unlocking structure includes a handle and a connecting shaft. Multiple connecting shafts are rotatably connected to the load switch body, and a connecting plate is fixedly connected to the connecting shaft. The connecting plate abuts against the connecting plate.

[0010] Preferably, a handle is fixedly connected to the connecting shaft, and the handle passes through the connecting shaft and is perpendicular to the connecting shaft.

[0011] Preferably, the connecting plate has a cross-section, and the axis of the connecting shaft is offset from the center of the connecting plate.

[0012] Preferably, a plurality of mounting plates are fixedly connected to the load switch body, and the mounting plates are provided with mounting grooves.

[0013] The beneficial effects of this utility model are as follows: When the protective cover needs to be disassembled for maintenance of the load switch body, the connecting plate can be moved by the unlocking structure. The connecting plate will cause the two locking blocks to move away from the locking slots. When the locking blocks and the locking slots are not engaged, the protective cover can be moved so that the two positioning blocks on it are not engaged with the load switch body. Then the protective cover can be removed from the load switch body, thus achieving quick disassembly of the protective cover. After the load switch body is maintained, the protective cover can be moved so that the two positioning blocks can be inserted into the load switch body at the same time. When the protective cover and the load switch body come into contact, the two springs will extend at the same time, causing the connecting plate to slide on the two guide rods. The movement of the connecting plate will cause the locking blocks to engage with the locking slots. At this time, the positioning blocks cannot move, thus achieving quick fixation of the protective cover. Therefore, the protective cover can be quickly disassembled and assembled during the maintenance of the load switch body, thereby shortening the maintenance time of the load switch body and improving the efficiency of the maintenance of the load switch body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the load switch body and the mounting plate of this utility model.

[0016] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.

[0017] Figure 4This is a schematic diagram of the connection structure between the guide rod and the connecting plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure between the protective cover and the positioning plug of this utility model.

[0019] In the diagram: 1. Load switch body; 2. Protective cover; 3. Positioning block; 4. Fixing structure; 401. Guide rod; 402. Connecting plate; 403. Locking block; 404. Locking groove; 405. Spring; 5. Unlocking structure; 501. Handle; 502. Connecting shaft; 503. Connecting disc; 504. Cross-section; 6. Mounting plate; 7. Mounting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 As shown, an environmentally friendly medium-voltage ring main unit load switch includes a load switch body 1, multiple protective covers 2 are installed on the load switch body 1, two positioning blocks 3 are fixedly connected to the protective covers 2, and the positioning blocks 3 are engaged with the load switch body 1. The load switch body 1 is provided with a fixing structure 4, which includes guide rods 401 and connecting plates 402. Multiple guide rods 401 are fixedly connected to the load switch body 1, and the same connecting plate 402 is slidably connected to two adjacent guide rods 401. Two locking blocks 403 are fixedly connected to the connecting plate 402. The positioning blocks 3 are provided with locking slots 404, and the locking blocks 403 are engaged with adjacent locking slots 404. A spring 405 is sleeved on the guide rods 401, one end of the spring 405 abuts against the guide rod 401, and the other end of the spring 405 abuts against the load switch body 1. The load switch body 1 is provided with an unlocking structure 5.

[0022] As a technical optimization of this utility model, the overall cross-section of the positioning plug 3 is L-shaped, and the cross-section of one end of the positioning plug 3 is trapezoidal. Therefore, it can play a role in guiding the movement when the positioning plug 3 is engaged with the load switch body 1.

[0023] As a technical optimization of this utility model, the overall cross-section of the locking block 403 is trapezoidal, so it can automatically resist the movement of the locking block 403 during the movement of the positioning insert 3 toward the locking block 403. The two locking blocks 403 are symmetrically distributed about the middle of the connecting plate 402. By setting the two locking blocks 403 to engage with the two positioning inserts 3 at the same time, the firmness of fixing the protective cover 2 can be improved.

[0024] As a technical optimization of this utility model, the cross-section of one end of the guide rod 401 is convex, which can limit the spring 405. The two guide rods 401 are symmetrically distributed about the middle of the connecting plate 402.

[0025] As a technical optimization of this utility model, the unlocking structure 5 includes a handle 501 and a connecting shaft 502. Multiple connecting shafts 502 are rotatably connected to the load switch body 1. A connecting disc 503 is fixedly connected to the connecting shaft 502. The connecting disc 503 abuts against the connecting plate 402. The axis of the connecting shaft 502 is offset from the center of the connecting disc 503. Therefore, when the connecting disc 503 rotates, it can abut against the movement of the connecting plate 402.

[0026] As a technical optimization of this utility model, a handle 501 is fixedly connected to the connecting shaft 502. The handle 501 passes through the connecting shaft 502 and is perpendicular to the connecting shaft 502. The connecting shaft 502 can be easily rotated by holding the handle 501.

[0027] As a technical optimization of this utility model, the connecting plate 503 is provided with a cut surface 504. By fitting the cut surface 504 with the connecting plate 402, the connecting plate 503 can support the connecting plate 402 after the handle 501 is released, thereby avoiding the need to hold the handle 501 with your hand when disassembling the protective cover 2, and effectively improving the convenience of disassembling the protective cover 2.

[0028] As a technical optimization of this utility model, multiple mounting plates 6 are fixedly connected to the load switch body 1, and mounting plates 6 are provided with mounting grooves 7. Therefore, the load switch body 1 can be installed inside the ring main unit by multiple bolts in conjunction with multiple mounting grooves 7.

[0029] When using this invention, if it is necessary to disassemble the protective cover 2 to inspect the load switch body 1, the connecting shaft 502 can be rotated by holding the handle 501. The rotation of the connecting shaft 502 will drive the connecting plate 503 to rotate. Since the axis of the connecting shaft 502 is offset from the center of the connecting plate 503, the connecting plate 503 will move against the connecting plate 402 as it rotates. The connecting plate 402 will drive the two locking blocks 403 to move away from the locking groove 404. As the connecting plate 503 rotates, the cut surface 504 will fit against the connecting plate 402. Then the handle 501 can be released. At this time, the connecting plate 503 will support the connecting plate 402. Therefore, after releasing the handle 501, the spring 405 will not extend to make the locking blocks 403 engage with the locking groove 404 again. When the locking blocks 403 and the locking groove 404 are not engaged, the protective cover can be moved. The protective cover 2 is designed so that the two positioning blocks 3 on it are not engaged with the load switch body 1, and then the protective cover 2 can be removed from the load switch body 1. This achieves quick disassembly of the protective cover 2. After the load switch body 1 is inspected and repaired, the protective cover 2 can be moved so that the two positioning blocks 3 can be inserted into the load switch body 1 at the same time. When the protective cover 2 and the load switch body 1 come into contact, the two springs 405 will extend at the same time, causing the connecting plate 402 to slide on the two guide rods 401. The movement of the connecting plate 402 will cause the locking block 403 to engage with the locking groove 404. At this time, the positioning blocks 3 cannot move, thus achieving quick fixation of the protective cover 2. Therefore, the protective cover 2 can be quickly disassembled and assembled during the inspection and maintenance of the load switch body 1, thereby shortening the inspection and maintenance time of the load switch body 1 and improving the inspection and maintenance efficiency of the load switch body 1.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An environmentally friendly load switch for medium-voltage ring main units, comprising a load switch body (1), characterized in that: Multiple protective covers (2) are installed on the load switch body (1). Two positioning blocks (3) are fixedly connected to the protective covers (2). The positioning blocks (3) are engaged with the load switch body (1). A fixing structure (4) is provided on the load switch body (1). The fixing structure (4) includes guide rods (401) and connecting plates (402). Multiple guide rods (401) are fixedly connected to the load switch body (1). Two adjacent guide rods (401) are slidably connected to the same... A connecting plate (402) is fixedly connected to two locking blocks (403). The positioning insert (3) is provided with a locking groove (404). The locking block (403) engages with the adjacent locking groove (404). A spring (405) is sleeved on the guide rod (401). One end of the spring (405) abuts against the guide rod (401), and the other end of the spring (405) abuts against the load switch body (1). The load switch body (1) is provided with an unlocking structure (5).

2. The load switch for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The overall cross-section of the positioning plug (3) is L-shaped, and the cross-section of one end of the positioning plug (3) is trapezoidal.

3. The load switch for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The overall cross-section of the card block (403) is trapezoidal, and the two card blocks (403) are symmetrically distributed about the middle of the connecting plate (402).

4. The load switch for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The cross-section of one end of the guide rod (401) is convex, and the two guide rods (401) are symmetrically distributed about the middle of the connecting plate (402).

5. The load switch for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The unlocking structure (5) includes a handle (501) and a connecting shaft (502). Multiple connecting shafts (502) are rotatably connected to the load switch body (1). A connecting disc (503) is fixedly connected to the connecting shaft (502). The connecting disc (503) abuts against the connecting plate (402).

6. A load switch for an environmentally friendly medium-voltage ring main unit according to claim 5, characterized in that: A handle (501) is fixedly connected to the connecting shaft (502), and the handle (501) passes through the connecting shaft (502) and is perpendicular to the connecting shaft (502).

7. A load switch for an environmentally friendly medium-voltage ring main unit according to claim 5, characterized in that: The connecting disk (503) has a cut surface (504), and the axis of the connecting shaft (502) is offset from the center of the connecting disk (503).

8. A load switch for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: Multiple mounting plates (6) are fixedly connected to the load switch body (1), and the mounting plates (6) are provided with mounting grooves (7).

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