CN214175922U

CN214175922U - Conductive loop device of solid-sealed polar pole without partial discharge

Info

Publication number: CN214175922U
Application number: CN202120100162.8U
Authority: CN
Inventors: 顾益; 单长伟
Original assignee: Ningbo Luding Electronic Technology Co ltd
Current assignee: Ningbo Luding Electronic Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-10
Anticipated expiration: 2031-01-14

Abstract

The utility model belongs to the technical field of electrical engineering, a do not have local place and put solid conductive loop device who seals utmost point post is disclosed, it is fixed through screw rod and vacuum tube threaded connection to touch to indicate, touches to indicate to be fixed with the conducting strip. The contact finger sleeve is connected with the conductive rod through a copper nut, the contact finger and the contact finger sleeve are both of cylindrical structures, the conductive sheet is a beryllium bronze conductive sheet, and the conductive sheet is in sliding contact with the inner surface of the contact finger sleeve. The utility model discloses conductive loop adopts to touch and indicates to connect, touches to indicate and touch the dactylotheca and all be cylindrical structure, has eliminated pointed end and has discharged, touches the dactylotheca and plays electrically conductive effect on the one hand, is equivalent to the equalizer ring on the one hand, makes the inside electric field evenly distributed of utmost point post, and the office that seals utmost point post admittedly is put for zero, and thorough solution has put the problem in office, does not have the office moreover and has put the index and reached internal leading level. The conductive loop is simple and reliable in connection, the contact finger sleeve only needs to be fixed on the conductive plate through a bolt, the assembly is simple, and the production efficiency is high.

Description

Conductive loop device of solid-sealed polar pole without partial discharge

Technical Field

The utility model belongs to the technical field of electrical engineering, especially, relate to a do not have local discharge and seal electrically conductive return circuit device of utmost point post admittedly.

Background

At present, the solid-sealed polar pole is formed by pouring a vacuum tube, a conductive loop, a current sensor and a voltage sensor into a whole by using a solid insulation technology through epoxy resin. The embedded pole has the technical advantages of integration, standardization, miniaturization and the like, and is the research direction of a new generation of primary and secondary fusion embedded pole. Because the solid-sealed polar pole is provided with a plurality of cast elements, a plurality of partial discharge links are provided, and the partial discharge level is the most important parameter of the polar pole, the service performance and the service life of the circuit breaker are directly determined. Therefore, how to reduce the partial discharge level becomes the most critical research subject.

At the present stage, in the pole developing process of many companies, a conductive circuit adopts flexible connection, and the local discharge is very high due to uneven electric field distribution at the edge of a copper strip of the flexible connection, most of the flexible connection exceeds 20PC, and the flexible connection does not meet the national standard. Many companies solve the problem that a shielding case is made again, the whole conductive circuit is wrapped, and through the treatment, although partial discharge can be less than 20PC, a mold of the shielding case is required to be opened, so that the cost is increased, and in the casting process, installation is troublesome, the process is complex, and the pole cracking is easy to occur. Aiming at the defects, the reasonable conductive loop connection is designed, and the important significance is achieved in developing a pole without partial discharge.

Through the above analysis, the problems and defects of the prior art are as follows: in the prior art, the solid-sealed polar pole wraps the whole conductive loop, and a mold of a shielding case is also required, so that the cost is increased; and the installation is troublesome in the pouring process, the process is complex, and the cracking of the pole is easy to occur.

The difficulty in solving the above problems and defects is: the shielding cover is usually made of stainless steel, and the stainless steel surface and epoxy resin are not well combined in casting, so that surface creepage and partial discharge phenomena are easily caused. The pouring process is complex, and the rejection rate of the pole is high. The solution with a shielding can hardly solves the bonding rate between the materials.

The significance of solving the problems and the defects is as follows: the scheme adopts the contact finger connection, the contact finger and the contact finger sleeve adopt the assembled type, the contact finger is connected with the vacuum tube by the screw rod after the pole is poured, and the contact finger sleeve is connected with the conducting rod of the pole by the bolt, so that the method is simple and reliable. The pole post pouring process is simple, the qualification rate is high, and the contact finger sleeve plays a role of a grading ring, so that an electric field in the pole post is uniformly distributed, and the overall insulating property of the circuit breaker is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a do not have the office and put the conductive loop device who seals utmost point post admittedly.

The utility model discloses a realize like this, a do not have the office to put the conductive loop device who seals utmost point post admittedly, the conductive loop device who seals utmost point post is put admittedly in no office is provided with

A contact finger;

the contact finger is fixedly connected with the vacuum tube through a screw rod, and a conducting strip is fixed on the contact finger.

The contact finger is positioned at the upper end in the contact finger sleeve.

Furthermore, the touch finger sleeve is connected with the conducting rod through a copper nut.

Further, the contact finger and the contact finger sleeve are both cylindrical structures.

Further, the conducting strip is a beryllium bronze conducting strip.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are: and 14400V voltage partial discharge smaller than 20PC is applied to national grid standard of 10KV breaker partial discharge. The circuit breaker of the scheme has the partial discharge level of 2.7PC when the 15000V voltage is applied, and the 2.7PC is the background partial discharge level, so that the circuit breaker is close to the non-partial discharge.

The utility model discloses conductive loop adopts to touch and indicates to connect, touches to indicate and touch the dactylotheca and all be cylindrical structure, has eliminated pointed end and has discharged, touches the dactylotheca and plays electrically conductive effect on the one hand, is equivalent to even ring on the one hand, makes the inside electric field evenly distributed of utmost point post, and the office that seals utmost point post is put and is zero, and thorough solution has put the problem in office, does not have the office moreover and has put the index and reached internal leading level. The conductive loop is simple and reliable in connection, the contact finger sleeve only needs to be fixed on the conductive plate through a bolt, the assembly is simple, and the production efficiency is high.

The utility model discloses well touch the finger cover and be connected with the conducting rod through the copper nut, make the conductive loop connect simply reliably.

The utility model discloses well touch finger and touch finger cover all are cylindrical structure, have eliminated point discharge.

The utility model discloses well touch finger and touch finger cover contact position adopt beryllium bronze conducting strip, and the contact is reliable, and the conducting capacity is showing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural view of a conductive loop device without a partial discharge solid-sealed pole according to an embodiment of the present invention.

In the figure: 1. a conductive rod; 2. a touch sleeve; 3. a contact finger; 4. a vacuum tube; 5. a conductive sheet; 6. a copper nut; 7. a screw.

Detailed Description

The scheme is applied to a 10KV primary-secondary fusion outdoor vacuum circuit breaker, and can also be applied to the connection design of 20KV, 35KV and indoor and outdoor pole conductive loops.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

To the problem that prior art exists, the utility model provides a do not have the office to put solid conductive loop device who seals utmost point post, it is right to combine the figure below the utility model discloses do detailed description.

As shown in fig. 1, in the conductive loop device without a partial discharge solid-sealed pole provided in the embodiment of the present invention, a screw 7 is fixed to a finger sleeve 2 through a nut, and the screw 7 is connected to a vacuum tube 4 through a thread; the touch sleeve 2 is connected with the conducting rod 1 through a copper nut 6; the upper side of the contact finger sleeve 2 is fixed with a conducting strip 5 and a contact finger 3.

The utility model discloses a theory of operation does: the utility model discloses well touch and indicate 3 and touch and indicate cover 2 all are cylindrical structure, have eliminated pointed end and have discharged, touch and indicate the cover to play the electrically conductive effect on the one hand, be equivalent to even ring on the one hand, make the inside electric field evenly distributed of utmost point post, seal the office of utmost point post admittedly and put for zero, thorough solution has put the problem in office, does not have the office moreover and puts the index and has reached internal leading level. The utility model discloses conductive loop connects simply reliably, touches the finger cover only need with the bolt fastening on the current conducting plate can, the assembly is simple, production efficiency is high. The contact part of the contact finger 3 and the contact finger sleeve 2 adopts a beryllium bronze conducting strip, the contact is reliable, and the conducting capacity is obvious.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. The utility model provides a do not have office to put admittedly and seal electrically conductive loop device of utmost point post which characterized in that, the electrically conductive loop device of no office puts admittedly and seals utmost point post is provided with:

a contact finger;

the contact finger is fixedly connected with the vacuum tube through a screw rod in a threaded manner, and a conducting strip is fixed on the contact finger;

the contact finger is positioned at the upper end in the contact finger sleeve.

2. The conductive loop device without the partial discharge embedded pole according to claim 1, wherein the contact sleeve is connected with the conductive rod through a copper nut.

3. The conductive loop device of the non-local-discharge embedded pole according to claim 1, wherein the contact finger and the contact finger sleeve are both cylindrical structures.

4. The conductive loop device of the non-local-discharge embedded pole according to claim 1, wherein the conductive sheet is a beryllium bronze conductive sheet; the conducting strip is in sliding contact with the inner surface of the contact finger sleeve.