CN216904182U - Be applied to 66kV and above environment-friendly and aerify insulation support of cabinet - Google Patents
Be applied to 66kV and above environment-friendly and aerify insulation support of cabinet Download PDFInfo
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- CN216904182U CN216904182U CN202220237819.XU CN202220237819U CN216904182U CN 216904182 U CN216904182 U CN 216904182U CN 202220237819 U CN202220237819 U CN 202220237819U CN 216904182 U CN216904182 U CN 216904182U
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Abstract
The utility model aims to solve the technical problem that the insulating sleeve of the existing 66kV or above power system gas-filled cabinet can only be applied to SF6 gas and can not be applied to environment-friendly insulating media such as dry air, nitrogen and the like, and provides the insulating sleeve applied to the 66kV or above environment-friendly gas-filled cabinet. The sleeve pipe is an inner taper sleeve pipe or an outer taper sleeve pipe; the insulating sleeve comprises a conductive hardware fitting and an insulating sleeve wrapped on the outer side of the conductive hardware fitting; one end of the insulating sleeve wrapping the conductive hardware fitting is provided with at least one layer of umbrella-shaped creepage increasing skirt used for increasing creepage distance along the surface from inside to outside along the radial direction; wherein, an increasing climbing groove is formed between the umbrella-shaped increasing climbing skirt at the innermost side and the conductive hardware fitting; the sleeve is also provided with a shielding ring which is electrically connected with the metal insert in the mounting fixing hole; a sealing groove is formed in the joint of the insulating sleeve and a metal grounding plate of an electric box of the gas-filled cabinet; and a sealing ring is arranged in the sealing groove.
Description
Technical Field
The utility model relates to the field of application of high-voltage power systems, in particular to an insulating sleeve for an environment-friendly gas-filled cabinet applied to a power system of 66kV or above.
Background
At present, the insulation gas of an air charging cabinet of electric equipment for electric power systems of 66kV and above at home and abroad is mainly SF6, the gas has excellent insulation performance, strong arc extinguishing capability and reliable stability, is the mainstream insulation gas used in high-voltage C-GIS switch cabinets at home and abroad at present, but SF6 is a greenhouse effect gas, the Kyoto protocol clearly lists the SF6 gas as one of 6 gases which are globally used for limitation, and the greenhouse effect generated by the SF6 gas is a global problem which cannot be ignored.
Therefore, in response to the policy strategy of priority and green low-carbon development of ecological environment in China and the world, the economic society is greatly promoted to develop comprehensive green transformation, and the development of the insulating sleeve for the environment-friendly gas-filled cabinet of the power system with the high voltage of 66kV or more is urgently needed, wherein the insulating medium of the gas-filled cabinet mainly comprises dry air, nitrogen and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that an insulating sleeve of an existing 66kV or above power system gas-filled cabinet can only be applied to SF6 gas and cannot be applied to environment-friendly insulating media such as dry air, nitrogen and the like, and provides the insulating sleeve for the environment-friendly gas-filled cabinet applied to the 66kV or above power system.
In order to achieve the purpose, the utility model adopts the technical scheme that:
an insulation sleeve applied to an environment-friendly gas-filled cabinet with 66kV and above is characterized in that: the insulating sleeve is wrapped on the outer side of the conductive hardware fitting;
one end of the insulating sleeve wrapped on the conductive hardware fitting, which is arranged in the air chamber of the gas-filled cabinet, is provided with at least one layer of umbrella-shaped creepage increasing skirt used for increasing creepage distance from the surface from inside to outside along the radial direction;
wherein, an increasing climbing groove is formed between the umbrella-shaped increasing climbing skirt at the innermost side and the conductive hardware fitting.
Furthermore, a sealing groove is formed at the joint of the insulating sleeve and a metal grounding plate of the electrical box of the gas-filled cabinet;
and a sealing ring is arranged in the sealing groove.
Furthermore, when the umbrella-shaped climbing skirts have two or more layers, climbing grooves are formed between every two adjacent umbrella-shaped climbing skirts.
Furthermore, an anti-creeping umbrella is arranged outside the insulating sleeve;
the climbing-increasing umbrella is sleeved on the insulating sleeve or is cast and vulcanized with the insulating sleeve into a whole.
Further, the outer surface of the conductive hardware fitting, which is wrapped in the insulating sleeve, is coated with a semiconductive coating;
the insulating sleeve is made of epoxy resin, and the climbing-increasing umbrella is made of rubber or epoxy resin.
Further, the sleeve is an inner cone sleeve.
Furthermore, the lower end of the conductive hardware fitting is provided with a spring contact finger, and the spring contact finger is in contact connection with other terminal connection positions connected with the inner taper sleeve;
the other end of the insulating sleeve is provided with a plurality of mounting and fixing holes;
and the sleeve is also provided with a shielding ring which is electrically connected with the metal insert in the mounting fixing hole.
Further, the sleeve is an outer cone sleeve.
Furthermore, the other end of the insulating sleeve is provided with a plurality of mounting and fixing holes;
and the sleeve is also provided with a shielding ring which is electrically connected with the metal insert in the mounting fixing hole.
Compared with the prior art, the utility model has the beneficial effects that:
1. the insulating sleeve applied to the environment-friendly type gas-filled cabinet of 66kV or above adopts two forms of inner cone plug-in type and outer cone plug-in type, not only can be matched with a cable terminal, but also can be matched with requirements of installing a lightning arrester, connecting a bus and the like, and the application range is wider; when the sleeve is connected with other types of electric insulating parts, the requirement of the standard EN50181 is met, and the electric insulating property meets the requirements of the standards GB/T11022 and GB/T4109.
2. According to the insulating sleeve applied to the environment-friendly gas-filled cabinet with the voltage of 66kV or above, the umbrella-shaped creepage increasing skirt is additionally arranged at one end of the insulating sleeve wrapping the conductive hardware fitting, so that the creepage distance along the surface of the insulating sleeve is increased, the insulating strength of the insulating sleeve is improved, the surface electric field is reduced, the overall dimension of the sleeve is reduced, and the insulating sleeve is more suitable for the environment-friendly gas-filled cabinet with limited space.
3. The sealing groove is arranged between the insulating sleeve and the equipment of the environment-friendly type gas-filled cabinet with the voltage of 66kV or more, and the sealing ring is arranged to ensure the sealing performance of the gas-filled cabinet.
Drawings
FIG. 1 is a schematic view of an inner cone plug-in insulation bushing in an embodiment 1 of the insulation bushing applied to an environment-friendly gas insulated cabinet of 66kV or above according to the present invention;
FIG. 2 is a schematic view of an outer cone plug-in type insulation sleeve of embodiment 2 of the utility model applied to an environment-friendly gas-filled cabinet of 66kV and above;
reference numerals:
the method comprises the following steps of 1-conducting hardware fitting, 2-insulating sleeve, 3-umbrella-shaped climbing skirt, 4-climbing groove, 5-shielding ring, 6-mounting fixing hole, 7-sealing groove and 8-spring contact finger.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Meanwhile, in the description of the present invention, it should be noted that the terms "front, rear, inside and outside" and the like indicate orientations or positional relationships based on those 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 referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides an insulating sleeve applied to an environment-friendly type gas-filled cabinet of 66kV or above based on the fact that the existing insulating sleeve with high voltage has low insulating strength which cannot be met and cannot be applied to the environment-friendly type gas-filled cabinet in a severe electric power environment.
Example 1
As shown in fig. 1, an insulating sleeve applied to an environment-friendly gas-filled cabinet of 66kV or above is an inner cone sleeve, and includes a conductive hardware 1, an insulating sleeve 2 wrapped outside the conductive hardware 1, and a shielding ring 5 for improving electric field distribution. The lower end of the conductive hardware fitting 1 is provided with a spring contact finger 8, and the spring contact finger 8 is in contact connection with other terminal connection positions connected with the inner taper sleeve; the insulating cover 2 wraps up the one end of electrically conductive gold utensil 1 and is provided with two-layer umbelliform increase climbing skirt 3 that is used for increasing along the face creepage distance along radially from inside to outside, and a plurality of installation fixed orificess 6 have been seted up to the other end, and interior taper sleeve pipe passes through the installation fixed orificess 6 mountable on the metal ground plate of aerifing the cabinet electric box. And a sealing groove 7 is arranged at the joint of the insulating sleeve 2 and the metal grounding plate of the electric box of the gas-filled cabinet.
Example 2
As shown in fig. 2, an insulating sleeve applied to an environment-friendly gas-filled cabinet of 66kV or above is an outer cone sleeve, and includes a conductive hardware 1, an insulating sleeve 2 wrapped outside the conductive hardware 1, and a shielding ring 5 for improving electric field distribution. Wherein, one end of the insulating sleeve 2 wrapping the conductive hardware fitting 1 is provided with two layers of umbrella-shaped creepage increasing skirts 3 used for increasing creepage distance along the surface from inside to outside along the radial direction; the size of the other end meets the requirement of EN50181, and an umbrella-shaped climbing skirt 3 is not arranged; the middle part is outer taper sleeve's ground connection stiff end, has seted up a plurality of mounting holes 6 on the insulating cover 2 of earthing terminal, and outer taper sleeve installs on the metal ground plate of aerifing the cabinet electric box through mounting holes 6, and at this moment, the one end that does not set up umbelliform climbing-increasing skirt 3 is located the electric box outside.
The umbrella-shaped climbing skirt 3 in the above embodiments is in a convex ring shape, and the umbrella-shaped climbing skirt 3 is provided with several layers, which are related to factors such as installation space and processing difficulty and can be adjusted in time.
In order to further increase the creepage distance and improve the insulation strength, the outside of the insulating sleeve 2 of the sleeve can be additionally provided with a climbing-increasing umbrella which can be sleeved on the insulating sleeve 2 and can also be cast and vulcanized with the insulating sleeve 2 into a whole, which is not shown in the figure. The insulating sleeve 2 is made of epoxy resin, and the epoxy casting surface is smooth and free of any phenomena of impurities, air holes, air bubbles, collision and the like; the material of the climbing-increasing umbrella is rubber or epoxy resin. The outer surface of the conductive hardware fitting 1, which is wrapped in the insulating sleeve 2, is coated with a semi-conductive coating; but the exposed surface of the conductive fitting 1 is not allowed to have any semiconductive coating.
The insulating sleeve of the embodiment meets the performance requirements of the gas-filled cabinet of 66kV or more, and the insulating medium of the gas-filled cabinet is dry air or nitrogen.
The insulating sleeve of the embodiment is also suitable for the green and environment-friendly power transformer of 66kV and above, namely, the traditional transformer oil is changed into vegetable oil.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides an be applied to 66kV and above environment-friendly and aerify insulation support of cabinet which characterized in that:
the sleeve is an inner taper sleeve;
comprises a conductive hardware (1) and an insulating sleeve (2) wrapped on the outer side of the conductive hardware (1);
the insulating sleeve (2) wraps the conductive hardware (1), wherein one end of the insulating sleeve, which is arranged in the air chamber of the inflatable cabinet, is provided with at least one layer of umbrella-shaped creepage increasing skirt (3) for increasing creepage distance along the surface from inside to outside along the radial direction; the other end of the insulating sleeve (2) is provided with a plurality of mounting and fixing holes (6);
wherein, a climbing groove (4) is formed between the umbrella-shaped climbing skirt (3) at the innermost side and the conductive hardware (1);
and spring contact fingers (8) in contact connection with other terminal connection positions connected with the inner taper sleeve are arranged in the conductive hardware fitting (1).
2. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with the voltage of 66kV or above according to claim 1, which is characterized in that:
the sleeve is also provided with a shielding ring (5), and the shielding ring (5) is electrically connected with the metal insert in the mounting fixing hole (6);
a sealing groove (7) is formed in the connection position of the insulating sleeve (2) and a metal grounding plate of an electric box of the gas-filled cabinet;
and a sealing ring is arranged in the sealing groove (7).
3. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with the voltage of 66kV or above according to claim 2, characterized in that:
when the umbrella-shaped climbing skirts (3) have two or more layers, climbing grooves (4) are formed between every two adjacent umbrella-shaped climbing skirts (3);
the outside of the insulating sleeve (2) is also provided with a climbing-increasing umbrella;
the climbing-increasing umbrella is sleeved on the insulating sleeve (2) or is cast and vulcanized with the insulating sleeve (2) into a whole.
4. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with 66kV and above according to any one of claims 1 to 3, characterized in that:
the insulating sleeve (2) is made of epoxy resin, and the climbing-increasing umbrella is made of rubber or epoxy resin.
5. The utility model provides an be applied to 66kV and above environment-friendly and aerify insulation support of cabinet which characterized in that:
the sleeve is an outer taper sleeve;
comprises a conductive hardware (1) and an insulating sleeve (2) wrapped on the outer side of the conductive hardware (1);
one end of the insulating sleeve (2) wrapping the conductive hardware fitting (1), which is arranged in the air chamber of the gas-filled cabinet, is provided with at least one layer of umbrella-shaped creepage increasing skirt (3) used for increasing creepage distance along the surface from inside to outside along the radial direction, and the other end of the insulating sleeve (2) is provided with a plurality of mounting and fixing holes (6);
the upper end of the conductive hardware (1) is higher than the innermost umbrella-shaped climbing skirt (3), and a climbing groove (4) is formed between the innermost umbrella-shaped climbing skirt (3); the lower end of the conductive hardware (1) is flush with the insulating sleeve (2) or slightly extends out of the insulating sleeve (2).
6. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with the voltage of 66kV or above according to claim 5, characterized in that:
the sleeve is also provided with a shielding ring (5), and the shielding ring (5) is electrically connected with the metal insert in the mounting fixing hole (6);
a sealing groove (7) is formed in the connection position of the insulating sleeve (2) and a metal grounding plate of an electric box of the gas-filled cabinet;
and a sealing ring is arranged in the sealing groove (7).
7. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with the voltage of 66kV or above according to claim 6, which is characterized in that:
when the umbrella-shaped climbing-increasing skirts (3) have two or more layers, climbing-increasing grooves (4) are formed between every two adjacent umbrella-shaped climbing-increasing skirts (3);
the outside of the insulating sleeve (2) is also provided with a climbing-increasing umbrella;
the climbing-increasing umbrella is sleeved on the insulating sleeve (2) or is cast and vulcanized with the insulating sleeve (2) into a whole.
8. The insulating sleeve applied to the environment-friendly type gas-filled cabinet with 66kV and above according to any one of claims 5-7, characterized in that:
the insulating sleeve (2) is made of epoxy resin, and the climbing-increasing umbrella is made of rubber or epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237819.XU CN216904182U (en) | 2022-01-28 | 2022-01-28 | Be applied to 66kV and above environment-friendly and aerify insulation support of cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237819.XU CN216904182U (en) | 2022-01-28 | 2022-01-28 | Be applied to 66kV and above environment-friendly and aerify insulation support of cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904182U true CN216904182U (en) | 2022-07-05 |
Family
ID=82183430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237819.XU Active CN216904182U (en) | 2022-01-28 | 2022-01-28 | Be applied to 66kV and above environment-friendly and aerify insulation support of cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904182U (en) |
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2022
- 2022-01-28 CN CN202220237819.XU patent/CN216904182U/en active Active
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