CN210040608U - Full-insulated tubular bus connecting device - Google Patents
Full-insulated tubular bus connecting device Download PDFInfo
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- CN210040608U CN210040608U CN201920791901.5U CN201920791901U CN210040608U CN 210040608 U CN210040608 U CN 210040608U CN 201920791901 U CN201920791901 U CN 201920791901U CN 210040608 U CN210040608 U CN 210040608U
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- connecting conductor
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- tubular
- metal connecting
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Abstract
The utility model provides a full insulation tubular busbar connecting device has mainly solved when current full insulation tubular busbar is connected in the air with electrical equipment, and insulating properties weakens, influences electrically conductive through-flow capacity scheduling problem. The full-insulation tubular busbar connecting device comprises an insulation cover, wherein a metal connecting conductor and a transition connecting conductor are arranged in the insulation cover, a tubular busbar connecting section is compressed into the insulation cover in an insulation mode, a tubular busbar is electrically connected with one side of the metal connecting conductor, the other side of the metal connecting conductor is electrically connected with one side of the transition connecting conductor, and the other side of the transition connecting conductor is electrically connected with a busbar of electrical equipment. The technical scheme provided by the utility model is applicable to various environments, such as high altitude, heavy filth, humidity and corrosive environment, and its insulating properties is reliable.
Description
Technical Field
The utility model relates to a connecting device, concretely relates to full insulation cast generating line connecting device belongs to middle and high voltage electric power system application, is particularly useful for in high altitude, heavy filthy, moist and the corrosive environment.
Background
The fully insulated tubular bus is a novel bus form, and is a bus product which is externally coated with insulation by using a copper pipe or an aluminum pipe as a conductor. The fully insulated tubular bus has been increasingly applied in the fields of national grid, south grid, petrifaction, steel, water conservancy, new energy power generation and the like in nearly ten years due to the advantages of large current-carrying capacity, high mechanical strength, small overall dimension and strong electrical insulating property.
At present, when the all-insulated tubular bus is connected with electrical equipment (such as a transformer, a switch cabinet and the like) in the air, the all-insulated tubular bus is connected through flexible connection or bus bars. Because the connection point is exposed in the air, the insulation performance of the connection mode is greatly weakened in high-altitude and heavily-polluted areas; in a moist or corrosive environment, the defect is amplified sharply, and the corrosion speed of the connection mode is high, so that the conductive through-current capacity is greatly influenced, and great hidden danger is brought to the safe operation of the system.
Take the chinese utility model patent No. cn201320561882.x entitled "the air-filled type cubical switchboard frame is led out the line structure" as an example, its concrete structure is: the shell cover of solid bus insulator has insulating sheath, guarantees the requirement of insulating in the air, and its top is equipped with insulating copper pipe generating line, guarantees the requirement of current-carrying capacity, and solid bus insulator inserts stainless steel casing perpendicularly, and it fixes on stainless steel casing's roof through the crimping board to through the sealing washer that takes and scribble with vacuum silicone grease, guarantee and stainless steel casing roof in close contact with, solid bus insulator passes through vertical copper bar connection stainless steel casing.
The technical scheme commonly used at present has extremely high requirements on the processing precision of the flexible connection of the tubular bus and the bus bar connection, and if sharp-angled burrs exist at the connection, the electric field at the connection is easily distributed unevenly, so that the local discharge amount at the connection is further increased.
In order to solve the above problems in the prior art, a technician provides a dedicated conductive connection device, but due to the increasing rated current of the existing power equipment, the conductive connection device cannot meet the requirements of practical use. Therefore, a connection device with reliable connection is needed.
Disclosure of Invention
The utility model provides a full insulation tubular busbar connecting device has mainly solved when current full insulation tubular busbar is connected in the air with electrical equipment, and insulating properties weakens, influences electrically conductive through-flow capacity scheduling problem.
The concrete technical solution of the utility model is as follows:
the fully-insulated tubular bus connecting device comprises an insulating cover, wherein a metal connecting conductor is arranged in the insulating cover, and a tubular bus connecting section is compressed into a connecting hole of the insulating cover in an insulated manner; one side of the metal connecting conductor is electrically connected with the tubular bus, and the other side of the metal connecting conductor is electrically connected with the electrical equipment.
Furthermore, the tubular busbar connecting section is compressed into the insulating cover in an insulating mode, the tubular busbar connecting section is provided with an adapter used for fixedly connecting the tubular busbar to the insulating cover, and the shape of the adapter is matched with that of a connecting hole formed in the insulating cover.
Further, the electrical device is electrically connected with the metal connecting conductor through the transition connecting conductor.
Furthermore, the metal connecting conductor is I-shaped, and the tubular bus and/or the transition connecting conductor extend into the metal connecting conductor and are in sliding electrical connection with the metal connecting conductor.
Further, the nearest linear distance between one point of the outer wall of the insulating cover and the external grounding body is B, the nearest linear distance between the electrical equipment and the point of the insulating cover is A, the creepage distance between the metal connecting conductor and the point along the surface is C, and the minimum arc distance of the insulating cover is satisfied: the A + B is 700mm, and the minimum creepage distance of the insulating cover is 1200 mm; when the altitude is greater than 1000 m, the distance should be corrected.
Further, the sliding electrical connection is specifically: a conductive contact finger is arranged between the tubular bus and the metal connecting conductor, and/or a conductive contact finger is arranged between the transition connecting conductor and the metal connecting conductor; the conductive contact finger is a watchband contact finger, a spring contact finger or a plum blossom contact finger.
Further, the adapter fixedly connects the tubular bus to the insulating cover through a fixing device; a semi-conductive shielding ring is arranged between the adapter and the fixing device; and a temperature measuring optical fiber is arranged on the outer side of the metal connecting conductor in the insulating cover.
Furthermore, the adapter comprises a stress cone, and the stress cone is made of silicon rubber and ethylene propylene diene monomer; the insulating cover is an epoxy insulating cover, a rubber insulating cover, a DMC insulating cover, an SMC insulating cover or a ceramic insulating cover.
Furthermore, a temperature measuring optical fiber is arranged outside the metal connecting conductor of the insulating cover.
Furthermore, the inner insulating surface and/or the outer insulating surface of the insulating cover are/is provided with climbing-increasing umbrella skirts.
Furthermore, a fixing piece is arranged on the outer side of the insulating cover.
Utility model's advantage is:
1. the utility model provides a full insulation tubular busbar connecting device, its full insulation tubular busbar and electrical equipment's cooperation are connected the position and are set up in the insulating boot, and this kind of mode is applicable to various environment, like in high altitude, heavy filthy, moist and the corrosive environment, its insulating properties is reliable.
2. The utility model provides a full insulation cast generating line connecting device, its electricity connection department is provided with electrically conducts and touches and indicates, and the contact is reliable, has ensured the product through-flow capacity.
3. The utility model provides a full insulation tubular busbar connecting device, its adapter and insulating boot have realized the plug-in connection, and the installation cooperation is simple and convenient, novel structure.
4. The utility model provides a full insulation tubular busbar connecting device is provided with temperature measurement optic fibre in its insulating boot, can monitor the temperature rise of junction, ensures electric power system safe operation.
Drawings
FIG. 1 is a first schematic structural view of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a third schematic structural diagram of the present invention;
the drawings are as follows:
1-tubular busbar; 2-an insulating cover; 3-busbar of electrical equipment; 4-an aluminum backing plate; 5-a fixing piece;
11-a fixture; 12-a semiconducting shield ring; 13-an adapter;
21-a metal connection conductor; 22-conductive contact fingers; 23-a transition connection conductor; 25-temperature measuring optical fiber.
Detailed Description
The utility model discloses a core principle lies in: the connecting point of the tubular bus and the electrical equipment is arranged in the sealed space and is designed to be an independent piece, so that the electrical property problem caused by the fact that the contact point is exposed in the air is avoided, and meanwhile, the installation, the maintenance and the detection are convenient.
The following detailed description is made in conjunction with the specific embodiments of the present invention:
as shown in fig. 1-3, the fully insulated tubular busbar connection device includes an insulating cover, a metal connection conductor and a transition connection conductor are disposed in the insulating cover, a tubular busbar connection section is compressed into the insulating cover in an insulated manner, the tubular busbar is electrically connected to one side of the metal connection conductor, the other side of the metal connection conductor is electrically connected to one side of the transition connection conductor, and the other side of the transition connection conductor is electrically connected to a busbar or other connection end of an electrical device. The tubular bus is connected with the electrical equipment through the insulating cover, and the metal connecting conductor and the transition connecting conductor are arranged in the insulating cover, so that the contact point is sealed in the insulating cover, and the installation, the maintenance and the detection are convenient.
The purpose that the tubular busbar connecting section is compressed into the insulating cover in an insulating way is that:
firstly, the tubular bus is fixed in an insulating cover, so that the connection reliability between the tubular bus and the insulating cover is ensured;
secondly, no gap is left between the tubular bus and the insulating cover, and partial discharge caused by the gap is avoided.
In combination with the above objectives, the present embodiment provides a better connection scheme: the tubular bus connecting section is provided with a fixing device for fixedly connecting the tubular bus to the insulating cover, the outer side of the connecting section of the tubular bus connecting section extending into the insulating cover is provided with an adapter, and the shape of the adapter is matched with that of a connecting hole arranged in the insulating cover. Add adapter and fixing device, both realized above-mentioned reliability and avoided the purpose of partial discharge, make simultaneously to form pluggable connection structure between cast generating line and the insulating boot, the effect is better. In order to further improve the electrical performance of the mating part, a semi-conductive shielding ring can be additionally arranged between the adapter and the fixing device.
If the nearest linear distance between one point of the outer wall of the insulating cover and the external grounding body is B, the nearest linear distance between the electrical equipment and the point of the insulating cover is A, the creepage distance between the metal connecting conductor and the point along the surface is C, and the minimum arc distance of the insulating cover is satisfied: the A + B is 700mm, and the minimum creepage distance of the insulating cover is 1200 mm; when the altitude is greater than 1000 m, the distance should be corrected.
The connection mode between the fixing device of tubular busbar and the insulating cover is more, and flange connection mode can be selected, and the fixing device can be connected with the insulating cover by arranging an aluminum base plate or directly arranging an insert on the insulating cover for fixed connection.
The adapter can be set into a conical structure similar to the connecting end of the lightning arrester and the overvoltage protector by combining the main structural form of the existing electrical equipment connecting device, namely the adapter is set into a stress conical shape, and the stress cone is made of silicon rubber, ethylene propylene diene monomer and other materials with better insulating property.
When the connection mode between the tubular bus and the insulating cover is a plug-in type, in order to further improve the connection reliability of the tubular bus and the metal connection conductor inside the insulating cover, the connection structure between the tubular bus and the insulating cover can be designed into sliding type electric connection; similarly, the connection structure of the electrical equipment and the metal connection conductor inside the insulating cover can also be designed to be in sliding electrical connection. Specifically, the sliding type electric connection structure can be a conductive contact finger structure, and at the moment, the metal connection conductor is designed to be I-shaped; the tubular bus connecting section extends into one side of the metal connecting conductor in the insulating cover, and a conductive contact finger is arranged between the tubular bus and the metal connecting conductor; the transition connecting conductor extends into the other side of the metal connecting conductor in the insulating cover, and a conductive contact finger is arranged between the transition connecting conductor and the metal connecting conductor. And the conductive contact fingers are adopted for connection, so that the through-current capacity can be effectively improved, and the reliability is improved.
In order to improve the intelligence of the product, temperature measuring optical fibers can be arranged on the outer sides of the metal connecting conductors in the insulating cover, so that the temperature of contact points at two ends can be monitored in real time, and the reliability of the product is further improved.
Meanwhile, the climbing-increasing umbrella skirt is arranged on the inner insulating surface and/or the outer insulating surface of the insulating cover, and the insulating cover can be made of epoxy insulating covers, rubber insulating covers, DMC insulating covers, SMC insulating covers or ceramic insulating covers.
In order to facilitate installation and improve installation reliability, a fixing piece is arranged on the outer side of the insulating cover. The mounting can set up in top, middle part or the bottom in the insulating boot outside, based on mechanics factor consideration to when setting up in the middle part, joint strength is great, and is the most stable.
Claims (10)
1. The utility model provides a full insulation tubular busbar connecting device which characterized in that: the insulating cover is internally provided with a metal connecting conductor, and the tubular bus connecting section is compressed into a connecting hole of the insulating cover in an insulating way; one side of the metal connecting conductor is electrically connected with the tubular bus, and the other side of the metal connecting conductor is electrically connected with the electrical equipment.
2. The all-insulated tubular busbar connecting device according to claim 1, wherein: the tubular bus connecting section is compressed into the insulating cover in an insulating mode, the tubular bus connecting section is provided with an adapter used for fixedly connecting the tubular bus to the insulating cover, and the shape of the adapter is matched with that of a connecting hole formed in the insulating cover.
3. The all-insulated tubular busbar connecting device according to claim 2, wherein: the electrical equipment is electrically connected with the metal connecting conductor through the transition connecting conductor.
4. The all-insulated tubular busbar connection device according to claim 3, wherein: the metal connecting conductor is I-shaped, and the tubular bus and/or the transition connecting conductor extend into the metal connecting conductor and are in sliding electrical connection with the metal connecting conductor.
5. The all-insulated tubular busbar connection device according to any one of claims 2 to 4, wherein: if the nearest linear distance between one point of the outer wall of the insulating cover and the external grounding body is B, the nearest linear distance between the electrical equipment and the point of the insulating cover is A, the creepage distance between the metal connecting conductor and the point along the surface is C, and the minimum arc distance of the insulating cover is satisfied: the minimum creepage distance of the insulation cover is A + C1200 mm.
6. The all-insulated tubular busbar connection device according to claim 4, wherein: the sliding type electric connection is specifically as follows: a conductive contact finger is arranged between the tubular bus and the metal connecting conductor, and/or a conductive contact finger is arranged between the transition connecting conductor and the metal connecting conductor; the conductive contact finger is a watchband contact finger, a spring contact finger or a plum blossom contact finger.
7. The all-insulated tubular busbar connection device according to claim 6, wherein: the adapter fixedly connects the tubular bus to the insulating cover through the fixing device; a semi-conductive shielding ring is arranged between the adapter and the fixing device; and a temperature measuring optical fiber is arranged on the outer side of the metal connecting conductor in the insulating cover.
8. The all-insulated tubular busbar connection device according to claim 7, wherein: the adapter comprises a stress cone, wherein the stress cone is made of silicon rubber and ethylene propylene diene monomer; the insulating cover is an epoxy insulating cover, a rubber insulating cover, a DMC insulating cover, an SMC insulating cover or a ceramic insulating cover.
9. The all-insulated tubular busbar connection device according to claim 8, wherein: and the inner insulating surface and/or the outer insulating surface of the insulating cover are/is provided with climbing-increasing umbrella skirts.
10. The all-insulated tubular busbar connecting device according to claim 9, wherein: and a fixing piece is arranged on the outer side of the insulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920791901.5U CN210040608U (en) | 2019-05-29 | 2019-05-29 | Full-insulated tubular bus connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920791901.5U CN210040608U (en) | 2019-05-29 | 2019-05-29 | Full-insulated tubular bus connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040608U true CN210040608U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920791901.5U Active CN210040608U (en) | 2019-05-29 | 2019-05-29 | Full-insulated tubular bus connecting device |
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| CN (1) | CN210040608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018651A (en) * | 2020-08-26 | 2020-12-01 | 西安神电(泾阳)电器有限公司 | Method for improving insulating strength of insulating part for environment-friendly gas-filled cabinet and insulating part |
-
2019
- 2019-05-29 CN CN201920791901.5U patent/CN210040608U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018651A (en) * | 2020-08-26 | 2020-12-01 | 西安神电(泾阳)电器有限公司 | Method for improving insulating strength of insulating part for environment-friendly gas-filled cabinet and insulating part |
| CN112018651B (en) * | 2020-08-26 | 2022-04-01 | 西安神电(泾阳)电器有限公司 | Method for improving insulating strength of insulating part for environment-friendly gas-filled cabinet and insulating part |
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