A ring main unit side expansion sleeve quick plugging device

Abstract

The utility model relates to ring main unit technical field, concretely discloses a kind of ring main unit side expansion sleeve pipe quick plugging device, including ring main unit body, the side plate surface of ring main unit body is equipped with side expansion sleeve pipe, reinforcing rib is fixed with between the side plate surface of ring main unit body and the lower end of side expansion sleeve pipe, 2 clamping grooves are set in the upper surface of reinforcing rib, adjacent ring main unit body surface is fixedly connected with reinforcing plate, the surface of reinforcing plate is provided with 2 buckles, the surface of reinforcing plate is fixedly connected with insulating plug. The ring main unit side expansion sleeve pipe quick plugging device does not need to be hoisted additional ring main unit to carry out and cabinet as traditional scheme, through the accurate plugging of insulating plug and side expansion sleeve pipe, can directly carry out pressure resistance, partial discharge test, save complex cabinet operation process, reduce manpower and time cost, the clamping connection of reinforcing rib and reinforcing plate, the double fixation of auxiliary clamping block and locking mechanism.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, specifically a quick sealing device for the side expansion sleeve of a ring main unit. Background Technology

[0002] Currently, various ring main units are widely used in urban and rural substations at all levels. As a key piece of equipment in the power distribution network system, ring main units are widely used in industrial areas, commercial centers, residential communities, and other places, undertaking the functions of power distribution, control, and protection.

[0003] Currently, most ring main units on the market expand their circuits using side expansion bushings. However, due to the special structure of the side expansion bushing, conventional withstand voltage and partial discharge tests cannot be performed without sealing it. Since withstand voltage and partial discharge tests are mandatory during the production of ring main units, the existing solution is to connect a side expansion ring main unit A to the ring main unit B under test in parallel. High-voltage lines are then connected through the input / output interfaces of ring main units A or B to conduct withstand voltage and partial discharge tests. Since each test requires hoisting ring main unit A and the ring main unit under test for parallel connection, the operation is complex, time-consuming, labor-intensive, and has low testing efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a quick sealing device for the side expansion sleeve of a ring main unit, so as to solve the problem mentioned in the background art that each test requires hoisting the ring main unit A and the ring main unit under test for parallel operation, which is complicated, time-consuming, labor-intensive and has low testing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick sealing device for the side expansion sleeve of a ring main unit, comprising a ring main unit body, a side expansion sleeve installed on the side plate surface of the ring main unit body, a reinforcing rib welded and fixed between the side plate surface of the ring main unit body and the lower end of the side expansion sleeve, two slots provided on the upper surface of the reinforcing rib, a reinforcing plate fixedly connected to the adjacent surface of the ring main unit body, two buckles provided on the surface of the reinforcing plate, and an insulating plug fixedly connected to the surface of the reinforcing plate.

[0006] Preferably, the groove of the reinforcing rib corresponds to the buckle of the reinforcing plate, and the reinforcing rib and the reinforcing plate form a snap-fit ​​connection. The surface of the reinforcing plate is provided with threaded holes, and the side expansion sleeve is correspondingly provided with the insulating plug.

[0007] Using the above technical solution, the slots and buckles engage in a corresponding snap-fit, allowing for quick assembly without the need for complex tools, eliminating the hassle of traditional cabinet hoisting. The threaded holes can be further reinforced with bolts, ensuring both rapid installation and connection stability, preventing loosening of the seal. The insulating plugs and side expansion sleeves are precisely aligned to ensure sealing performance and meet the insulation requirements of withstand voltage and partial discharge tests.

[0008] Preferably, an auxiliary locking block is fixedly connected to the side surface of the ring main unit, the surface of the auxiliary locking block is provided with a positioning groove, the surface of the positioning groove is provided with a limit locking groove, and a locking mechanism is provided between the two auxiliary locking blocks.

[0009] The above technical solution, with the auxiliary card block cooperating with the locking mechanism, provides additional fixation from the side, improving the overall structure's vibration resistance and robustness. The positioning groove and limit card slot provide clear installation positioning, reducing operational difficulty and ensuring consistent installation position each time. The symmetrical arrangement of the two auxiliary card blocks ensures balanced force distribution, avoiding structural deformation caused by excessive force on a single connection point.

[0010] Preferably, the locking mechanism includes a positioning block disposed on the inner wall of the limiting slot. An installation slot is formed on the outer surface of one end of the positioning block, and a first pressing block is provided on the inner wall of the installation slot. A limiting block is fixedly connected to the outer surface of the positioning block, and an adjusting screw is installed on the other end of the positioning block. A supporting slider is provided on the outer surface of the adjusting screw, and a linkage slider is fixedly connected to the surface of the supporting slider. A second pressing plate is fixed to one end of the linkage slider.

[0011] The above technical solution integrates multiple fixing components to achieve "positioning-limiting-pressing" in one integrated manner, making the sealing effect more reliable. Each component has a clear division of labor: the positioning block is responsible for basic fixing, and the first pressing block and the second pressing plate strengthen the pressing, adapting to different working conditions.

[0012] Preferably, one end of the positioning plug has a chamfer on its outer surface, and the positioning plug and the positioning groove are engaged in a locking connection, and the limiting plug and the limiting slot are engaged in a locking connection.

[0013] The chamfered design of the positioning insert facilitates quick insertion into the positioning groove, reducing the difficulty of alignment during installation. The double-locking structure prevents lateral and longitudinal displacement, making the fixation more stable.

[0014] Preferably, the mounting slot and the first pressure block are slidably connected, and a spring is connected between the mounting slot and the first pressure block, and the surface of the first pressure block is inclined.

[0015] Using the above technical solution, the first pressure block is slidably connected to the mounting slot, and elastically pressed with a spring. It can accommodate slight dimensional deviations, improve sealing, and the inclined surface design automatically guides and presses when inserted, simplifying the installation operation and eliminating the need for manual pressure adjustment.

[0016] Preferably, the adjusting screw and the positioning block are rotatably connected, the adjusting screw and the support slider are threadedly connected, the support slider and the linkage slider are slidably connected to the positioning block, the second pressure plate is annularly designed, and the surface of the second pressure plate is provided with anti-slip rubber strips.

[0017] Using the above technical solution, the adjusting screw can finely adjust the position of the support slider, accurately control the clamping force of the second pressure plate, adapt to different sealing requirements, the sliding connection design ensures smooth adjustment, and the threaded connection ensures that the position is fixed after adjustment and does not loosen.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the quick sealing device for the side expansion sleeve of the ring main unit: 1. Unlike traditional solutions, there is no need to hoist an additional ring main unit for parallel operation. Through precise sealing of the insulating plug and the side expansion sleeve, withstand voltage and partial discharge tests can be carried out directly, eliminating the complicated parallel operation process, reducing manpower and time costs, and significantly improving testing efficiency. 2. The interlocking connection between the reinforcing rib and the reinforcing plate, and the double fixation of the auxiliary locking block and the locking mechanism, form a multi-dimensional force support to prevent the sealing components from loosening. At the same time, the corresponding setting of the insulating plug and the anti-slip sealing design of the second pressure plate ensure the insulation and sealing of the sealing part and meet the stringent requirements of the test environment. 3. Each component adopts a snap-fit ​​or sliding connection method, combined with a chamfered guide and elastic clamping structure, which reduces the difficulty of installation and alignment. It can be quickly assembled without professional tools. The adjusting screw can finely adjust the clamping force and can adapt to side expansion sleeves with different size deviations, improving the versatility and reusability of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of this utility model; Figure 3 This is a front view schematic diagram of the connection between the insulating plug and the reinforcing plate of this utility model; Figure 4 This is a three-dimensional structural diagram of the connection between the auxiliary card block and the positioning groove of this utility model; Figure 5 This is a three-dimensional structural diagram of the connection between the positioning plug and the limiting plug of this utility model; Figure 6 This is a three-dimensional structural diagram of the connection between the adjusting screw and the supporting slider of this utility model; Figure 7 This is a three-dimensional structural diagram of the connection between the linkage slider and the second pressure plate of this utility model.

[0020] In the diagram: 1. Ring main unit body; 2. Reinforcing rib; 3. Side expansion sleeve; 4. Insulating plug; 5. Reinforcing plate; 6. Auxiliary locking block; 7. Positioning groove; 8. Limiting slot; 9. Positioning insert; 10. Installation slot; 11. First pressure block; 12. Limiting insert; 13. Adjusting screw; 14. Support slider; 15. Linkage slider; 16. Second pressure plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-7 This utility model provides a technical solution: a quick sealing device for the side expansion sleeve of a ring main unit, comprising a ring main unit body 1, a reinforcing rib 2, a side expansion sleeve 3, an insulating plug 4, a reinforcing plate 5, an auxiliary locking block 6, a positioning groove 7, a limiting locking groove 8, a positioning insert block 9, an installation slot 10, a first pressure block 11, a limiting insert block 12, an adjusting screw 13, a supporting slider 14, a linkage slider 15, and a second pressure plate 16. The ring main unit body 1 has a side expansion sleeve 3 installed on its side plate surface. A reinforcing rib 2 is welded and fixed between the side plate surface of the ring main unit body 1 and the lower end of the side expansion sleeve 3. Two locking grooves are provided on the upper surface of the reinforcing rib 2. Adjacent ring main unit body surfaces are fixedly connected with reinforcing ribs. The reinforcing plate 5 has two buckles on its surface and an insulating plug 4 is fixedly connected to its surface. The groove of the reinforcing rib 2 corresponds to the buckle of the reinforcing plate 5, and the reinforcing rib 2 and the reinforcing plate 5 form a snap-fit ​​connection. The surface of the reinforcing plate 5 has threaded holes, and the side expansion sleeve 3 corresponds to the insulating plug 4. The reinforcing plate 5 with the insulating plug 4 is aligned with the side expansion sleeve 3 and inserted. The buckle on the lower surface of the reinforcing plate 5 is aligned with the groove on the surface of the reinforcing rib 2 and inserted. Then, a bolt is inserted through the threaded hole of the reinforcing plate 5 and through the fixing hole on the surface of the ring main unit 1. Finally, a nut is used to tighten the reinforcing plate 5 and the ring main unit 1 until the reinforcing plate 5 and the air box of the ring main unit 1 are flush.

[0023] An auxiliary locking block 6 is fixedly connected to the side surface of the ring main unit 1. A positioning groove 7 is formed on the surface of the auxiliary locking block 6, and a limiting groove 8 is formed on the surface of the positioning groove 7. A locking mechanism is provided between the two auxiliary locking blocks 6. The locking mechanism includes a positioning insert 9, which is disposed on the inner wall of the limiting groove 8. An installation slot 10 is formed on the outer surface of one end of the positioning insert 9, and a first pressing block 11 is provided on the inner wall of the installation slot 10. A limiting insert 12 is fixedly connected to the outer surface of the positioning insert 9, and the other end of the positioning insert 9 is... An adjusting screw 13 is provided, and a support slider 14 is provided on the outer surface of the adjusting screw 13. A linkage slider 15 is fixedly connected to the surface of the support slider 14. A second pressure plate 16 is fixed to one end of the linkage slider 15. The positioning plug 9 of the locking mechanism is aligned with the auxiliary locking blocks 6 on the side surface of the two ring main cabinet bodies 1. The chamfer at one end of the positioning plug 9 is used to guide it to be inserted into the positioning groove 7 of the auxiliary locking block 6. At the same time, the limiting plug 12 on the outer surface of the positioning plug 9 is inserted into the limiting slot 8 of the positioning groove 7, thereby achieving the pre-fixing of the locking mechanism.

[0024] The outer surface of one end of the positioning insert 9 is chamfered, and the positioning insert 9 and the positioning groove 7 are engaged. The limiting insert 12 and the limiting slot 8 are engaged. The mounting slot 10 and the first pressing block 11 are slidably connected, and a spring is connected between the mounting slot 10 and the first pressing block 11. The surface of the first pressing block 11 is inclined. When the positioning insert 9 is installed, the auxiliary locking block 6 presses the first pressing block 11 in the mounting slot 10. The first pressing block 11 slides along the mounting slot 10 and compresses the spring. The spring rebounds and generates elastic force, pushing the first pressing block 11 out of the auxiliary locking block 6, ensuring that the first pressing block 11 presses the surface of the auxiliary locking block 6 in the future.

[0025] The adjusting screw 13 is rotatably connected to the positioning block 9, and the adjusting screw 13 is threadedly connected to the support slider 14. The support slider 14 and the linkage slider 15 are both slidably connected to the positioning block 9. The second pressure plate 16 is annularly designed, and the surface of the second pressure plate 16 is provided with anti-slip rubber strips. When the adjusting screw 13 at the other end of the positioning block 9 is rotated, because the adjusting screw 13 is threadedly connected to the support slider 14, the support slider 14 drives the linkage slider 15 to slide along the positioning block 9, so that the annular second pressure plate 16 at one end of the linkage slider 15 is tightly attached to the periphery of the side expansion sleeve 3. The anti-slip rubber strips enhance the anti-slip seal, thus completing the final fixation and sealing.

[0026] Working principle: When using the quick sealing device for the side expansion sleeve of the ring main unit, the device first engages with the groove and buckle of the reinforcing rib 2 and the reinforcing plate 5, so that the insulating plug 4 is aligned with the side expansion sleeve 3 for initial sealing. Then, the threaded bolts of the reinforcing plate 5 are used for reinforcement. Next, the positioning plug 9 is inserted into the positioning groove 7 of the auxiliary plug 6 by chamfering. The limiting plug 12 is inserted into the limiting groove 8 for pre-fixing and locking mechanism. At this time, the auxiliary plug 6 presses the first pressure block 11. The spring rebounds and makes the first pressure block 11 slide out for subsequent pressing. Finally, the adjusting screw 13 is rotated to drive the support slider 14 and the linkage slider 15 to slide, so that the annular second pressure plate 16 is tightly attached to the periphery of the side expansion sleeve 3 by the anti-slip rubber strip, which increases the overall practicality.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick sealing device for the side expansion sleeve of a ring main unit, comprising the ring main unit body (1), characterized in that: The side plate of the ring main unit (1) is equipped with a side expansion sleeve (3). A reinforcing rib (2) is welded and fixed between the side plate of the ring main unit (1) and the lower end of the side expansion sleeve (3). Two slots are provided on the upper surface of the reinforcing rib (2). A reinforcing plate (5) is fixedly connected to the adjacent surface of the ring main unit (1). Two buckles are provided on the surface of the reinforcing plate (5). An insulating plug (4) is fixedly connected to the surface of the reinforcing plate (5).

2. The quick sealing device for the side expansion sleeve of a ring main unit according to claim 1, characterized in that: The groove of the reinforcing rib (2) is correspondingly set with the buckle of the reinforcing plate (5), and the reinforcing rib (2) and the reinforcing plate (5) form a snap-fit ​​connection. The surface of the reinforcing plate (5) is provided with threaded holes, and the side expansion sleeve (3) is correspondingly set with the insulating plug (4).

3. The quick sealing device for the side expansion sleeve of a ring main unit according to claim 1, characterized in that: The side surface of the ring main unit (1) is fixedly connected with an auxiliary card block (6). The surface of the auxiliary card block (6) is provided with a positioning groove (7). The surface of the positioning groove (7) is provided with a limit card slot (8). A locking mechanism is provided between the two auxiliary card blocks (6).

4. The quick sealing device for the side expansion sleeve of a ring main unit according to claim 3, characterized in that: The locking mechanism includes a positioning block (9), which is disposed on the inner wall of the limiting slot (8). An installation slot (10) is provided on the outer surface of one end of the positioning block (9). A first pressure block (11) is provided on the inner wall of the installation slot (10). A limiting block (12) is fixedly connected to the outer surface of the positioning block (9). An adjusting screw (13) is installed on the other end of the positioning block (9). A support slider (14) is provided on the outer surface of the adjusting screw (13). A linkage slider (15) is fixedly connected to the surface of the support slider (14). A second pressure plate (16) is fixed to one end of the linkage slider (15).

5. A quick-sealing device for the side expansion sleeve of a ring main unit according to claim 4, characterized in that: The outer surface of one end of the positioning plug (9) is chamfered, and the positioning plug (9) and the positioning groove (7) are engaged. The limiting plug (12) and the limiting slot (8) are engaged.

6. The quick sealing device for the side expansion sleeve of a ring main unit according to claim 4, characterized in that: The mounting slot (10) and the first pressure block (11) are slidably connected, and a spring is connected between the mounting slot (10) and the first pressure block (11). The surface of the first pressure block (11) is inclined.

7. A quick-sealing device for the side expansion sleeve of a ring main unit according to claim 4, characterized in that: The adjusting screw (13) is rotatably connected to the positioning block (9), the adjusting screw (13) is threadedly connected to the support slider (14), the support slider (14) and the linkage slider (15) are both slidably connected to the positioning block (9), the second pressure plate (16) is annularly designed, and the surface of the second pressure plate (16) is provided with anti-slip rubber strips.

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