Outgoing line sleeve installation structure of gas-insulated switchgear and gas-insulated switchgear

Abstract

The utility model discloses an outgoing line sleeve installation structure of a gas-insulated switchgear and the gas-insulated switchgear. The outgoing line sleeve installation structure of the gas-insulated switchgear comprises a cabinet body. A wire outlet sleeve; the outer wall of the wire outlet sleeve is provided with an annular boss part which extends in the radial direction. The periphery of the wire outlet sleeve is sleeved with a sealing ring located outside the cabinet body, and the sealing ring abuts against the boss part and the outer wall of the cabinet body so that the wire outlet sleeve can be matched with the cabinet body in a sealed mode. Through the arrangement of the boss part and the sealing ring, when the wire outlet sleeve is installed, the wire outlet sleeve is pushed from outside to inside outside the cabinet body, when the wire outlet sleeve needs to be disassembled, the wire outlet sleeve is operated outside the cabinet body and pulled out, in this way, the wire outlet sleeve is disassembled and assembled outside the cabinet body, the operation space outside the cabinet body is large, and therefore a user can disassemble and assemble the wire outlet sleeve conveniently; even, a second side plate commonly used by a current cabinet body can be omitted, so that the procedure of dismounting the second side plate when the wire outlet sleeve is dismounted can be omitted, and the wire outlet sleeve is further convenient to dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-filled cabinets, and in particular to an outlet bushing installation structure of a gas-filled cabinet and a gas-filled cabinet. Background Art

[0002] The inflatable cabinet is an indoor AC high-voltage gas-insulated metal-enclosed switchgear that is insulated by inflation. Some use a combination of air insulation and sulfur hexafluoride gas compartments, while others use environmentally friendly gas inflation.

[0003] The inflatable cabinet generally includes a cabinet body and an outlet bushing. The cabinet body has a first side panel and a second side panel opposite to the first side panel. The first side panel has a mounting hole that penetrates the wall thickness, and the outlet bushing is inserted in the mounting hole. The common structure at present is that the outlet bushing is installed from the cabinet body, specifically, the second side panel is opened first, the outlet bushing is inserted from the cabinet body to the outside of the cabinet body, and finally the first side panel is installed.

[0004] However, the above-mentioned outlet bushing is not convenient to disassemble and assemble, which is specifically reflected in: first, when disassembling and assembling the outlet bushing, the user needs to operate inside the cabinet, and the space inside the cabinet is relatively small, so disassembly and assembly is inconvenient; second, when the outlet bushing needs to be removed for maintenance and inspection, the second side panel needs to be removed first, and then the outlet bushing needs to be pulled out of the cabinet; after installing the outlet bushing, the second side panel needs to be reinstalled. The entire disassembly and assembly process has many steps, which is inconvenient. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide an outlet bushing installation structure of an inflatable cabinet which is convenient for disassembly and assembly in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide an inflatable cabinet.

[0007] The utility model adopts the following technical solution to solve the above-mentioned first technical problem: an outlet bushing installation structure of an inflatable cabinet, comprising:

[0008] The cabinet has mounting holes extending through the wall thickness;

[0009] The outlet sleeve is detachably inserted in the mounting hole;

[0010] Features:

[0011] The outer wall of the outlet sleeve has a radially extending annular boss portion;

[0012] The outer periphery of the outlet bushing is sleeved with a sealing ring outside the cabinet, and the sealing ring abuts against the boss portion and the outer wall of the cabinet respectively, so that the outlet bushing is sealed and matched with the cabinet.

[0013] In order to facilitate the installation and positioning of the sealing ring, the boss portion has an at least partial annular receiving groove for receiving the sealing ring.

[0014] In order to further make the outlet bushing and the cabinet seal, it also includes

[0015] A pressing plate is sleeved on the outer periphery of the outlet bushing, and the pressing plate is detachably connected to the cabinet and abuts against the boss portion, thereby pressing the sealing ring against the outer wall of the cabinet.

[0016] In this way, by providing the pressing plate, the pressing plate provides the outlet bushing with a force toward the cabinet, thereby facilitating the sealing cooperation between the outlet bushing and the cabinet.

[0017] In order to increase the strength of the pressing plate, at least a portion of the edge of the pressing plate has a folded edge bent toward the outer wall of the cabinet.

[0018] In order to facilitate the installation and positioning of the pressing plate, one of the boss portion and the pressing plate has a positioning groove, and the other has a positioning rib extending into the positioning groove. In this way, when installing the pressing plate, the positioning rib is aligned with the positioning groove.

[0019] In order to facilitate the pressing plate to abut against the boss portion, the positioning rib has a bent portion bent toward the bottom of the positioning groove;

[0020] There are at least two positioning ribs, which are spaced apart and distributed along the circumference of the boss portion;

[0021] The number and positions of the positioning grooves correspond to the positioning ribs.

[0022] In this way, by providing the bending portion, it is convenient for the pressing plate to rest against the boss portion; the number of positioning ribs is large and their distribution is reasonable, which is convenient for positioning the pressing plate, and the acting force is relatively uniform.

[0023] There may be various structures for detachably connecting the pressing plate and the cabinet body, preferably including a bolt having one end connected to the outer wall of the cabinet body and the other end passing through the pressing plate, and a nut threadedly connected to the other end of the bolt and locking the pressing plate. The pressing plate and the cabinet body may also be detachably connected by other means such as a screw lock.

[0024] Preferably, a shielding ring is provided in the outlet bushing, and the length of the shielding ring is 200-260 mm. Thus, the shielding ring is longer and the mutual inductor sleeved on the outer periphery of the shielding ring has wider adaptability, and the shielding ring can adapt to mutual inductors with different bundle numbers.

[0025] The utility model adopts the following technical solution to solve the second technical problem: an inflatable cabinet, characterized in that the outlet bushing installation structure of the inflatable cabinet as described above is adopted.

[0026] Preferably, a copper tube directly or indirectly connected to the inner end of the outlet bushing is provided in the cabinet, and the end of the copper tube is arc-shaped. The copper tube is used to facilitate heat dissipation and material saving, and the arc-shaped end facilitates uniform optimization of the electric field.

[0027] Compared with the prior art, the utility model has the advantages that: by providing the boss portion and the sealing ring, when installing the outlet bushing, the outlet bushing can be pushed from the outside to the inside outside the cabinet. When the outlet bushing needs to be removed, it is also operated outside the cabinet by pulling the outlet bushing out. In this way, the outlet bushing can be disassembled and assembled outside the cabinet, and the operation space outside the cabinet is large, so that it is convenient for users to disassemble and assemble.

[0028] Even the second side plate commonly used in the current cabinet can be eliminated, so that the process of disassembling the second side plate when disassembling the outlet bushing can be eliminated, which further facilitates the disassembly of the outlet bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of an inflatable cabinet according to an embodiment of the utility model;

[0030] Figure 2 for Figure 1 Sectional view of the gas filling cabinet (without some transformers);

[0031] Figure 3 for Figure 2 A magnified schematic diagram of the local A in the middle;

[0032] Figure 4 for Figure 1 a cross-sectional view of the inflatable cabinet at another position;

[0033] Figure 5 for Figure 4 A magnified schematic diagram of the part B in the middle;

[0034] Figure 6 It is a three-dimensional schematic diagram of a pressing plate in an embodiment of the utility model;

[0035] Figure 7 It is a three-dimensional schematic diagram of the outlet bushing in the embodiment of the utility model;

[0036] Figure 8 It is a schematic diagram of the outlet sleeve from another angle in the embodiment of the utility model. DETAILED DESCRIPTION

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] See also Figures 1 to 8 , which is a preferred embodiment of the utility model. The outlet bushing installation structure of the inflatable cabinet includes a cabinet body 1, an outlet bushing 2, a sealing ring 3, a pressing plate 4 and other main components.

[0039] The cabinet 1 has a mounting hole that penetrates the wall thickness; the outer wall of the outlet bushing 2 has a radially extending annular boss portion 21; the boss portion 21 has a partial annular receiving groove 211 for receiving the sealing ring 3. In order to increase the strength of the cabinet 1, see Figure 3 A reinforcing plate 103 is installed inside the cabinet 1 at a position corresponding to the boss portion 21.

[0040] The outlet bushing 2 is detachably inserted in the mounting hole. A shielding ring (not shown in the figure) is arranged inside the outlet bushing 2, and the length of the shielding ring is 200-260 mm. The outlet bushing 2 is sheathed with a mutual inductor 6 that interacts with the shielding ring.

[0041] The sealing ring 3 is sleeved on the outer circumference of the outlet bushing 2 and is located outside the cabinet 1 . The sealing ring 3 abuts against the boss portion 21 and the outer wall of the cabinet 1 , respectively, so that the outlet bushing 2 and the cabinet 1 are sealed and matched.

[0042] The pressing plate 4 is sleeved on the outer periphery of the outlet bushing 2. The pressing plate 4 is detachably connected to the cabinet 1 and abuts against the boss portion 21, so that the sealing ring 3 is pressed against the outer wall of the cabinet 1. The edge of the pressing plate 4 has a folded edge 41 bent toward the outer wall of the cabinet 1 at a local position, or the pressing plate 4 may have a folded edge 41 all around the outer periphery. The length of the folded edge 41 should not affect the sealing effect of the sealing ring 3. Between the boss portion 21 and the pressing plate 4, one has a positioning groove 212, and the other has a positioning rib 42 extending into the positioning groove 212. In this embodiment, the positioning rib 42 is located on the pressing plate 4, and the positioning groove 212 is located on the boss portion 21. The positions of the positioning rib 42 and the positioning groove 212 can also be interchanged. In this embodiment, the number of the positioning rib 42 and the positioning groove 212 are both 3, and they are evenly spaced along the circumferential direction. The number and position of the positioning groove 212 correspond to the positioning rib 42. The number of the positioning rib 42 and the positioning groove 212 is adjusted as needed, and the number of the two can be the same or different. The positioning rib 42 has a bent portion bent toward the bottom of the positioning groove 212. It also includes a bolt 101 with one end connected to the outer wall of the cabinet 1 and the other end passing through the pressing plate 4, and a nut 102 threadedly connected to the other end of the bolt 101 and locking the pressing plate. There are four bolts 101 and nuts 102, which are spaced apart along the pressing plate 4, and the number of bolts 101 and nuts 102 can be adjusted as needed.

[0043] The utility model also relates to an inflatable cabinet, which adopts the outlet bushing installation structure of the inflatable cabinet as described above. A copper tube 5 directly or indirectly connected to the inner end of the outlet bushing 2 is arranged in the cabinet body 1, and the end of the copper tube 5 is arc-shaped.

[0044] The working principle and usage process are as follows.

[0045] Put the sealing ring 3 on the outer periphery of the outlet bushing 2, put the pressing plate 4 on the outer periphery of the outlet bushing 2, insert the outlet bushing 2 into the installation hole of the cabinet 1 from the outside to the inside, and then connect the pressing plate 4 to the cabinet 1, so that the sealing ring 3 seals the outlet bushing 2 and the cabinet 1.

[0046] When the outlet bushing 2 needs to be removed, the nut 102 is first unscrewed to disengage the pressing plate 4 from the cabinet 1, and then the outlet bushing 2 is pulled outward. There is no need to remove the second side plate of the existing cabinet 1, and the operation is convenient.

Claims

1. A cable bushing installation structure for an inflatable cabinet, comprising: The cabinet (1) has a mounting hole penetrating the wall thickness; An outlet sleeve (2) is detachably inserted into the mounting hole; Features: The outer wall of the outlet bushing (2) has a radially extending annular boss portion (21); The outer periphery of the outlet bushing (2) is sheathed with a sealing ring (3) located outside the cabinet (1); the sealing ring (3) abuts against the boss portion (21) and the outer wall of the cabinet (1) respectively, so that the outlet bushing (2) and the cabinet (1) are sealed and matched.

2. The outlet bushing installation structure according to claim 1, characterized in that: The boss portion (21) has an at least partially annular receiving groove (211) for receiving the sealing ring (3).

3. The outlet bushing installation structure according to claim 1, characterized in that: Also includes A pressing plate (4) is sleeved on the outer periphery of the outlet bushing (2); the pressing plate (4) is detachably connected to the cabinet (1) and abuts against the boss portion (21), thereby pressing the sealing ring (3) against the outer wall of the cabinet (1).

4. The outlet bushing installation structure according to claim 3, characterized in that: At least a portion of the edge of the pressure plate (4) has a folded edge (41) bent toward the outer wall of the cabinet (1).

5. The outlet bushing installation structure according to claim 3, characterized in that: Between the boss portion (21) and the pressing plate (4), one has a positioning groove (212), and the other has a positioning rib (42) extending into the positioning groove (212).

6. The outlet bushing installation structure according to claim 5, characterized in that: The positioning rib (42) has a bent portion bent toward the bottom of the positioning groove (212); There are at least two positioning ribs (42), which are spaced apart and distributed along the circumference of the boss portion (21); The number and positions of the positioning grooves (212) correspond to the positioning ribs (42).

7. The outlet bushing installation structure according to claim 3, characterized in that: It also includes a bolt (101) having one end connected to the outer wall of the cabinet (1) and the other end passing through the pressing plate (4), and a nut (102) threadedly connected to the other end of the bolt (101) and locking the pressing plate (4).

8. The outlet bushing installation structure according to claim 1, characterized in that: A shielding ring is arranged inside the outlet bushing (2), and the length of the shielding ring is 200-260 mm.

9. An inflatable cabinet, characterized in that: The outlet bushing installation structure of the inflatable cabinet as claimed in any one of claims 1 to 8 is adopted.

10. The inflatable cabinet according to claim 9, characterized in that: A copper tube (5) is arranged in the cabinet (1) and is directly or indirectly connected to the inner end of the outlet bushing (2), and the end of the copper tube (5) is arc-shaped.

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