CN216819058U - External normal pressure cabinet business turn over line sleeve pipe - Google Patents
External normal pressure cabinet business turn over line sleeve pipe Download PDFInfo
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- CN216819058U CN216819058U CN202123110453.4U CN202123110453U CN216819058U CN 216819058 U CN216819058 U CN 216819058U CN 202123110453 U CN202123110453 U CN 202123110453U CN 216819058 U CN216819058 U CN 216819058U
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Abstract
The utility model relates to an external normal-pressure cabinet wire inlet and outlet sleeve which is inserted into a mounting hole formed in a pressure plate, wherein the pressure plate is locked on a normal-pressure sealed air-insulated ring net cabinet through a screw; the external normal-pressure cabinet wire inlet and outlet sleeve comprises an epoxy resin insulation body, a conductor and an induction network; the epoxy resin insulation body comprises an internal part and an external part which are integrally connected, the external part is provided with an annular boss, one side surface of the annular boss facing the internal part is an installation surface, the installation surface is provided with a sealing groove, and a sealing ring is installed in the sealing groove; the cable accessory terminal is characterized in that threaded holes are formed in the end of the conductor, the threaded holes in one end of the conductor correspond to the inner portion and are connected with the transition guide piece of the normal-pressure sealed air-insulated ring main unit through screws, and the threaded holes in the other end of the conductor correspond to the outer portion and are connected with the cable accessory terminal through screws. The utility model can completely meet the technical requirements and the insulating property of the 12kV normal-pressure sealed air insulating ring main unit.
Description
Technical Field
The utility model relates to the field of wire inlet and outlet sleeves, in particular to an external normal-pressure cabinet wire inlet and outlet sleeve which completely meets the technical requirements and the insulating property of a 12kV normal-pressure sealed air insulating ring main unit.
Background
With the acceleration of the transformation and upgrade pace of the power industry in China and the urgent need for energy conservation and emission reduction, the regulation of atmospheric humidity and the treatment of atmospheric pollution become an irresistible task. Aiming at the rapidly developing power industry, the environment-friendly gas ring main unit is developed, and future power transmission and distribution equipment is bound to be continuously developed around the requirements of safety, reliability, miniaturization, environment friendliness and the like.
At present, the most environment-friendly and energy-saving gas in nature is air, so that the insulating structural member needs to be redesigned to meet the relevant requirements of the air ring main unit. The existing sleeve circulated in the market can not meet the technical requirements of 12kV normal-pressure sealed air-insulated ring main units, namely the air distance is more than or equal to 125mm, the creepage distance is more than or equal to 240mm, and the sleeve is generally applied to 12kV environment-friendly air-insulated ring main units.
Therefore, how to design and manufacture a wire inlet and outlet bushing which meets the technical requirements and the insulating performance of the 12kV normal pressure sealed air insulating ring main unit is one of the technical problems to be solved by the technical people in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an external normal-pressure cabinet wire inlet and outlet sleeve which completely meets the technical requirements and insulating property of a 12kV normal-pressure sealed air-insulated ring main unit.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an external normal-pressure cabinet wire inlet and outlet sleeve is inserted into a mounting hole formed in a pressing plate, and the pressing plate is locked on a normal-pressure sealed air insulation ring net cabinet through a screw; external normal pressure cabinet business turn over line sleeve pipe includes epoxy insulator, conductor and response net, wherein:
the epoxy resin insulation body is provided with a central hole and comprises an internal part and an external part which are integrally connected, the external part is provided with an annular boss, one side surface of the annular boss facing the internal part is an installation surface, the installation surface is provided with a sealing groove, and a sealing ring is installed in the sealing groove;
the conductor is inserted into the central hole, threaded holes are formed in two ends of the conductor, the threaded hole in one end of the conductor is arranged corresponding to the inner part and is connected with the transition guide piece of the normal-pressure sealed air-insulated ring main unit through a screw, and the threaded hole in the other end of the conductor is arranged corresponding to the outer part and is connected with a cable accessory terminal through a screw;
the induction net is embedded into the external part and is arranged close to the internal part.
Further preferred is: built-in portion includes integrative insulating boot and the full skirt section that links to each other, wherein:
the insulating cover is U-shaped and is arranged on the umbrella skirt section;
the umbrella skirt section is a circular ring section, and the outer side wall of the umbrella skirt section is provided with an umbrella skirt.
Further preferred is: external portion includes integrative response section and the grafting section that links to each other, wherein:
the induction section is a circular ring section with the same outer diameter and is connected with the umbrella skirt section;
the inserting section is a conical section, and the large-diameter end of the inserting section is connected with the induction section;
the induction section extends outwards along the radial direction of the induction section to form the annular boss.
Further preferred is: a gap is formed between the pressing plate and the normal-pressure sealed air insulation ring main unit, and the annular boss is clamped at the gap.
Further preferred is: the edge of the pressing plate is bent towards or/and back to the normal-pressure sealed air insulation ring main unit.
Further preferred is: the conductor is a linear metal guide rod, and the axial length of the conductor is smaller than that of the epoxy resin insulation body.
Further preferred is: the induction network induction system is characterized by further comprising an electrified display interface, wherein the electrified display interface is arranged at the induction section and corresponds to the induction network.
Further preferred is: the induction net is an annular body which is distributed coaxially with the conductor.
After adopting the technical scheme, compared with the prior art, the utility model has the following advantages:
the external normal-pressure cabinet wire inlet and outlet sleeve is arranged on the normal-pressure sealed air insulating ring net cabinet through the pressing plate, the external normal-pressure cabinet wire inlet and outlet sleeve is provided with the sealing groove, and the sealing ring is arranged in the sealing groove, so that the sealing between the air box and the sleeve is realized, air moisture and small particle substances are prevented from entering the air box, the cleanness of the air box is ensured, and the insulating property is further ensured; in addition, the conductor both ends in the external ordinary pressure cabinet business turn-over line sleeve set up the screw hole, and the screw hole fastens the overlap joint through the thread and switches on the return circuit, the conductor corresponds the one end terminal surface to the annular boss orientation of insulating boot the air distance between the terminal surface of interior portion is greater than 125mm, and the inside wall full skirt has increased the creep distance, guarantees that the creep distance of product is greater than 240 mm's margin, and then guarantees the air insulating nature ability of product to satisfy 12kV ordinary pressure sealed air insulating looped netowrk cabinet's technical requirement and insulating properties completely, solve the technical problem who exists among the prior art.
Drawings
FIG. 1 is a schematic structural diagram of the embodiment of the present invention, in which the external normal-pressure cabinet inlet-outlet bushing is installed in the normal-pressure sealed air-insulated ring main unit
Fig. 2 is a schematic view of an installation structure of the atmospheric-pressure sealed air-insulated ring main unit between the external normal-pressure cabinet inlet and outlet bushings according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an external normal pressure cabinet inlet-outlet bushing according to an embodiment of the present invention;
FIG. 4 is a bottom view of the structure shown in FIG. 3;
FIG. 5 is a schematic structural cross-sectional view of an external normal pressure cabinet inlet-outlet bushing according to an embodiment of the present invention;
fig. 6 is an exploded view of the external normal pressure cabinet inlet-outlet bushing according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
As shown in fig. 1 and 2, the utility model discloses an external normal-pressure cabinet wire inlet and outlet sleeve E, which is mounted on a normal-pressure sealed air-insulated ring net cabinet through a pressure plate C. Specifically, the method comprises the following steps: the normal-pressure sealed air-insulated ring main unit comprises an air box D-1, a transition guide piece D-2 and a connecting piece D-3, wherein three external normal-pressure cabinet wire inlet and outlet sleeves E are arranged on the air box D-1 side by side, one end of each external normal-pressure cabinet wire inlet and outlet sleeve E is connected with a switch through the transition guide piece D-2, the switch is connected with the connecting piece D-3, the other end of each external normal-pressure cabinet wire inlet and outlet sleeve E is connected with a cable accessory terminal, and the connecting piece D-3 is connected with other cabinets; the pressing plate C is a rectangular sheet metal plate body, three mounting holes are formed in the pressing plate C at intervals along the long edge direction of the pressing plate C, the external normal-pressure cabinet wire inlet and outlet sleeve E is inserted into the mounting holes, eight screws distributed in an array mode and a nut C-1 are mounted on the pressing plate C, the pressing plate C is locked on the air box D-1 in a matched mode, and a conical spring pad is assembled between the nut C-1 and the screws;
as shown in fig. 2, the upper edge and the lower edge of the pressing plate C are both long edge edges, and the long edge edges are bent towards or/and away from the normal pressure sealed air insulation ring main unit, in this embodiment, the upper edge of the pressing plate C is bent 90 degrees towards the direction of the air tank D-1, and the lower edge of the pressing plate C is bent 90 degrees away from the direction of the air tank D-1.
As shown in fig. 2 to fig. 6, the external normal pressure cabinet wire inlet/outlet bushing E includes an epoxy resin insulating body 100, a conductor 200, and an induction network 300.
As shown in fig. 2 to 6, the epoxy resin insulation body 100 is cylindrical, a central hole is formed in the middle of the epoxy resin insulation body, and the inner diameter of the central hole is consistent, and the epoxy resin insulation body 100 includes an inner portion 110 and an outer portion 120 that are integrally connected. When the epoxy resin insulating body 100 is inserted into the mounting hole, a part of the epoxy resin insulating body is disposed in the air box D-1, the part is the inner portion 110, and the rest is the outer portion 120. The inner part 110 comprises an insulating cover 111 and an umbrella skirt section 112 which are connected integrally, wherein the insulating cover 111 is U-shaped and is arranged on the umbrella skirt section 112; the umbrella skirt section 112 is a circular ring section, and the outer side wall of the circular ring section is provided with an umbrella skirt. The external portion 120 includes an induction section 121 and an insertion section 122 connected integrally, the induction section 121 is a circular ring section with the same outer diameter, and the induction section 121 is connected with the annular boss 130; the plug section 122 is a tapered section, and a large diameter end of the plug section is connected to the sensing section 121.
As shown in fig. 2 to 6, the sensing segment 121 in the outer portion 120 extends radially outward to form an annular portion, the annular portion and an outer sidewall of the sensing segment form a stepped structure, and the annular portion is clamped in the mounting hole; the outer side wall of the annular part extends outwards along the radial direction to form an annular boss 130, the annular boss 130 is clamped between the pressing plate C and the outer side wall of the air box D-1, a side surface, facing outwards, of the annular boss 130 is an installation surface (the installation surface is the side surface, facing towards one side of the air box, of the annular boss 130) and is provided with an annular sealing groove 400, and a sealing ring 410 is installed in the sealing groove 400 in a sealing mode.
As shown in fig. 2 to 6, the conductor 200 is a linear metal rod, and its axial length is smaller than that of the epoxy resin insulation body 100; the conductor 200 is inserted into the central hole, and both ends of the conductor are provided with threaded holes, one threaded hole is arranged corresponding to the inner part 110 and connected with the transition guide piece D-2 of the normal-pressure sealed air-insulated ring main unit through a screw, and the other threaded hole is arranged corresponding to the outer part 120 and connected with a cable accessory terminal through a screw.
As shown in fig. 2 to 6, the induction net 300 is embedded in the exterior part 120 and is disposed close to the interior part 110; the induction network 300 is an annular body, and is distributed coaxially with the conductor 200; specifically, the method comprises the following steps:
as shown in fig. 2 to fig. 6, the induction network further includes an electrified display interface 500, and the electrified display interface 500 is provided with an annular boss 130 and connected to the induction network 300.
As shown in fig. 1 to fig. 6, the external normal-pressure cabinet wire inlet and outlet bushing E is applied to a lower inlet wire of a 12kV normal-pressure sealed air-insulated ring main unit or an outlet wire of a partition cabinet, and the bushing E completely meets the technical requirements and insulating properties of the 12kV normal-pressure sealed air-insulated ring main unit. The external normal-pressure cabinet wire inlet and outlet sleeve E is assembled from the air box D-1 to the inside, and the outer side is compressed by a metal plate pressing plate C and fixed on a cabinet metal plate through a stud welded on the cabinet metal plate in advance. At the same time. The sealing rings 410 are assembled in the corresponding sealing grooves 400, so that the air box D-1 and the external normal-pressure cabinet inlet and outlet bushing E are sealed, air moisture and small-particle substances are prevented from entering the air box, the cleanness of the air box is guaranteed, and the insulating property is guaranteed. The internal conductor ensures certain current carrying capacity, and the other cabinet conductive parts are fastened, lapped and communicated with a loop through screw teeth at two ends. The air distance between the two points AB is larger than 125mm (namely, the air distance between the end face of the end of the conductor 200 corresponding to the insulating cover 111 and the end face of the annular boss 130 facing the inner part 110 is larger than 125mm), the inside wall umbrella skirt increases the creepage distance, and ensures that the creepage distance of the product is larger than the margin of 240mm, thereby ensuring the air insulation performance of the product. Meanwhile, the round insulating cover 111 is additionally arranged at the top of the cabinet, so that the high potential of the copper bar lapped with the incoming and outgoing lines of the switch is isolated from the low potential of the sheet metal part of the cabinet, and the electrical insulating property is enhanced.
In addition, the external insulation body 100 of the gas box of the atmospheric-pressure sealed air insulation ring main unit is particularly lengthened, a voltage transformer with higher precision can be assembled, and the induction network at the corresponding position is also lengthened, so that the seamless butt joint with the shielding part of the external cable accessory is ensured to reach the external full shielding state of the gas box D-1, and the insulation performance of the product can be further ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides an external ordinary pressure cabinet business turn over line sleeve pipe which characterized in that: the air-tight sealing ring net cabinet is inserted into a mounting hole formed in a pressure plate, and the pressure plate is locked on the normal-pressure air-tight sealing ring net cabinet through a screw; external normal pressure cabinet business turn over line sleeve pipe includes epoxy insulator, conductor and response net, wherein:
the epoxy resin insulation body is provided with a central hole and comprises an internal part and an external part which are integrally connected, the external part is provided with an annular boss, one side surface of the annular boss facing the internal part is an installation surface, the installation surface is provided with a sealing groove, and a sealing ring is installed in the sealing groove;
the conductor is inserted into the central hole, threaded holes are formed in two ends of the conductor, the threaded hole in one end of the conductor is arranged corresponding to the inner part and is connected with the transition guide piece of the normal-pressure sealed air-insulated ring main unit through a screw, and the threaded hole in the other end of the conductor is arranged corresponding to the outer part and is connected with a cable accessory terminal through a screw;
the induction net is embedded into the external part and is arranged close to the internal part.
2. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 1, wherein: built-in portion includes integrative insulating boot and the full skirt section that links to each other, wherein:
the insulating cover is U-shaped and is arranged on the umbrella skirt section;
the umbrella skirt section is a circular ring section, and the outer side wall of the umbrella skirt section is provided with an umbrella skirt.
3. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 2, wherein: external portion includes integrative response section and the grafting section that links to each other, wherein:
the induction section is a circular ring section with the same outer diameter and is connected with the umbrella skirt section;
the inserting section is a conical section, and the large-diameter end of the inserting section is connected with the induction section;
the induction section extends outwards along the radial direction of the induction section to form the annular boss.
4. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 1 or 3, wherein: a gap is formed between the pressing plate and the normal-pressure sealed air insulation ring main unit, and the annular boss is clamped at the gap.
5. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 4, wherein: the edge of the pressing plate is bent towards or/and back to the normal-pressure sealed air insulation ring main unit.
6. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 1, wherein: the conductor is a linear metal guide rod, and the axial length of the conductor is smaller than that of the epoxy resin insulation body.
7. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 3, wherein: the induction network induction system is characterized by further comprising an electrified display interface, wherein the electrified display interface is arranged at the induction section and corresponds to the induction network.
8. The external normal-pressure cabinet wire inlet and outlet sleeve as claimed in claim 1, wherein: the induction net is an annular body which is distributed coaxially with the conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123110453.4U CN216819058U (en) | 2021-12-13 | 2021-12-13 | External normal pressure cabinet business turn over line sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123110453.4U CN216819058U (en) | 2021-12-13 | 2021-12-13 | External normal pressure cabinet business turn over line sleeve pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216819058U true CN216819058U (en) | 2022-06-24 |
Family
ID=82055121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123110453.4U Active CN216819058U (en) | 2021-12-13 | 2021-12-13 | External normal pressure cabinet business turn over line sleeve pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216819058U (en) |
-
2021
- 2021-12-13 CN CN202123110453.4U patent/CN216819058U/en active Active
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361115 2F, No. 8 (plant 3), Xiangming Road, industrial zone, torch high tech Zone (Xiang'an), Xiamen, Fujian Patentee after: Xiamen Gudeyi Electric Co.,Ltd. Address before: 361115 2F, No. 8 (plant 3), Xiangming Road, industrial zone, torch high tech Zone (Xiang'an), Xiamen, Fujian Patentee before: XIAMEN GOOD EP ELECTRICAL CO.,LTD. |