阅读说明：本技术 一种断路器主断口信号取出工装 (circuit breaker main fracture signal takes out frock ) 是由 郝春来 张树成 孙金奇 罗靓 朱云政 崔连波 陈跃云 蔡京京 刘妍 李琦 潘玉芳 于 2018-05-14 设计创作，主要内容包括：本发明提供了一种断路器主断口信号取出工装,信号取出工装包括用于密封安装在断路器端盖上的座体,所述座体内绝缘固设有或一体成型有信号传输件,信号传输件具有使用时与断路器腔体对应的内端和设于断路器外部的外端,所述内端上固连有信号传输线,信号传输线的另一端为用于与断路器的信号导体固定相连的固连端。将与座体和信号导体均滑动装配的测试杆件更换为固设或一体成型在座体内的信号传输件,以及与信号传输件固定相连的信号传输线,而且,信号传输线与信号导体之间也为固定相连的关系。在测试时即使断路器出现震动,信号传输线与信号导体之间也不会出现相对的滑动摩擦,不会由于产生异物而造成断路器内出现绝缘问题。(The invention provides a signal taking-out tool for a main fracture of a circuit breaker, which comprises a base body which is hermetically arranged on an end cover of the circuit breaker, wherein a signal transmission piece is fixedly arranged in the base body in an insulating way or integrally formed, the signal transmission piece is provided with an inner end which corresponds to a cavity of the circuit breaker when in use and an outer end which is arranged outside the circuit breaker, a signal transmission line is fixedly connected to the inner end, and the other end of the signal transmission line is a fixedly connected end which is fixedly connected with a signal conductor of the circuit breaker. The testing rod piece assembled with the base body and the signal conductor in a sliding mode is replaced by a signal transmission piece fixedly arranged in the base body or integrally formed in the base body and a signal transmission line fixedly connected with the signal transmission piece, and the signal transmission line and the signal conductor are fixedly connected. Even the circuit breaker shakes when the test, relative sliding friction can not appear between signal transmission line and the signal conductor yet, can not cause the insulating problem to appear in the circuit breaker owing to produce the foreign matter.)

1. The utility model provides a frock is taken out to circuit breaker owner fracture signal, is including being used for the pedestal of sealed installation on the circuit breaker end cover, its characterized in that: the seat internal insulation sets firmly or integrated into one piece has signal transmission spare, and signal transmission spare has the inner that corresponds with the circuit breaker cavity when using and locates the outside outer end of circuit breaker, link firmly signal transmission line on the inner, signal transmission line's the other end is for being used for with the fixed end that links to each other of the signal conductor of circuit breaker.

2. The frock is taken out to circuit breaker main fracture signal of claim 1, its characterized in that: the signal transmission piece is a switching terminal with the inner end and the outer end being wiring ends.

3. The frock is taken out to circuit breaker main fracture signal of claim 2, its characterized in that: and threaded blind holes which are fixedly connected with the signal transmission line and the connecting ring of the external port line are correspondingly formed in the inner end and the outer end of the adapter terminal.

4. The circuit breaker main break signal take-out tool according to claim 1, 2 or 3, characterized in that: the pedestal is including being used for the base of seal installation on the circuit breaker end cover and the insulating seat of sealed spiral-lock on keeping away from circuit breaker end cover one side of base, signal transmission spare is located on the insulating seat and the inner passes base and insulating seat and extends to the cavity of circuit breaker.

5. The frock is taken out to circuit breaker main fracture signal of claim 4, its characterized in that: the insulating seat is fixedly arranged on the base through a fastening screw, and an elastic washer is arranged between the head of the fastening screw and the insulating seat.

6. the frock is taken out to circuit breaker main fracture signal of claim 4, its characterized in that: the base is provided with a through hole for the inner end of the signal transmission piece to pass through, and the signal transmission piece and the through hole are arranged at intervals in the radial direction.

7. The frock is taken out to circuit breaker main fracture signal of claim 4, its characterized in that: and the signal transmission piece and the insulating base are integrally cast and molded.

8. The circuit breaker main break signal take-out tool according to claim 1, 2 or 3, characterized in that: the base body is provided with a fastening structure which can be used for fastening the base body on the end cover of the point inspection hole of the circuit breaker in a sealing manner.

9. The frock is taken out to circuit breaker main fracture signal of claim 8, its characterized in that: the fastening structure is a plurality of bolt through holes which are distributed along the circumferential direction and are arranged corresponding to the threaded blind holes on the point inspection hole end cover.

10. The breaker main break signal take-out tool according to claim 1 or 2, characterized in that: the fixed connection end of the signal transmission line is a connection ring which can be fixedly connected on the signal conductor through a screw.

Technical Field

The invention relates to a circuit breaker main fracture signal taking-out tool.

Background

The ultra-high voltage line in China is the most advanced power transmission technology in the world at present, and is also an important innovation achievement with few and leading worlds and completely independent intellectual property rights in China. The circuit breaker has good breaking capacity in a power transmission line and has a certain protection effect on the line, so that the mechanical characteristic test of the circuit breaker is required to reach the national standard. When the 1100kV circuit breaker characteristic test is carried out, the access method of the public signal point is very important for the test.

The utility model discloses a grant bulletin number is CN 202119635U's a utility model discloses a high voltage circuit breaker mechanical properties testing arrangement, this testing arrangement sealed mounting is the pedestal on the circuit breaker end cover when using, has seted up the perforation on the pedestal, wears to be equipped with the test member at the sealed direction in the perforation, and the test member includes measuring head mount pad and the guide bar that the front and back screw thread links to each other, still including setting up the measuring head at measuring head mount pad front end. When the high-voltage circuit breaker guide seat is used specifically, the measuring rod piece sends the measuring head to the signal conductor on the high-voltage circuit breaker guide seat, so that the measuring head extends into the signal conductor and is communicated in a contact mode. Simultaneously, set up the bell mouth on the pedestal, install a plurality of taper sleeve piecemeals that form the taper sleeve in the bell mouth, wear the dress in the taper sleeve with the test member, be equipped with the nut at the outside screw thread of pedestal, the nut can compress tightly the taper sleeve piecemeal in order to press from both sides tight test member when screwing up.

However, in the test process of the circuit breaker, due to the existence of the operating mechanism, the circuit breaker can generate large vibration, the nut is easily vibrated to be loose, and the clamping acting force on the test rod piece is reduced. Because the relation that only is contact intercommunication between test member and the signal conductor, the signal conductor takes place relative movement and pushes away from the test member with the test member easily, and finally, can pop out the test member by the circuit breaker in owing to the effect of circuit breaker internal and external differential pressure, cause the injury to the operating personnel person. In the relative movement process of the signal conductor and the test rod piece, foreign matters are easily generated on the signal conductor and/or the test rod piece, so that the flashover condition is caused in the circuit breaker, and the integral insulation capacity is reduced. Meanwhile, some foreign substances may be generated between the test bar and the signal conductor when the test bar is initially inserted.

Disclosure of Invention

The invention aims to provide a circuit breaker main fracture signal taking-out tool, which is used for solving the problem that insulation hidden danger occurs in a circuit breaker due to the fact that a test rod piece and a signal conductor are easy to slide relatively in the prior art.

In order to achieve the purpose, the technical scheme of the breaker main fracture signal taking-out tool is as follows: the utility model provides a frock is taken out to circuit breaker owner fracture signal, is including being used for the pedestal of seal installation on the circuit breaker end cover, the pedestal internal insulation has set firmly or integrated into one piece has signal transmission spare, and signal transmission spare has the inner that corresponds with the circuit breaker cavity when using and locates the outside outer end of circuit breaker, link firmly signal transmission line on the inner, the other end of signal transmission line is for being used for with the fixed end that links firmly of the signal conductor of circuit breaker.

The invention has the beneficial effects that: the invention provides a circuit breaker main fracture signal taking-out tool which comprises a base body which is hermetically arranged on a circuit breaker end cover when in use, wherein a signal transmission piece is fixedly arranged in the base body in an insulating mode or integrally formed, the signal transmission piece is provided with an inner end corresponding to a circuit breaker cavity and an outer end positioned outside a circuit breaker, when in use, a signal transmission line is connected between the inner end and a signal conductor of the circuit breaker, and the signal transmission line is fixedly connected with the inner end and the signal conductor. The testing rod piece which is assembled with the base body and the signal conductor in a sliding mode in the prior art is replaced by a signal transmission piece which is fixedly arranged or integrally formed in the base body and a signal transmission line which is fixedly connected with the signal transmission piece, and the signal transmission line and the signal conductor are fixedly connected. The condition that can not appear producing the foreign matter because of sliding friction when initial assembly takes place, moreover, even shock appears in the circuit breaker when the test, relative sliding friction can not appear yet between signal transmission line and the signal conductor, can not cause the insulating problem to appear in the circuit breaker owing to producing the foreign matter.

The signal transmission piece is a switching terminal with the inner end and the outer end being wiring ends.

And threaded blind holes which are fixedly connected with the signal transmission line and the connecting ring of the external port line are correspondingly formed in the inner end and the outer end of the adapter terminal.

The pedestal is including being used for the base of seal installation on the circuit breaker end cover and the insulating seat of sealed spiral-lock on keeping away from circuit breaker end cover one side of base, signal transmission spare is located on the insulating seat and the inner passes base and insulating seat and extends to the cavity of circuit breaker.

The insulating seat is fixedly arranged on the base through a fastening screw, and an elastic washer is arranged between the head of the fastening screw and the insulating seat.

The base is provided with a through hole for the inner end of the signal transmission piece to pass through, and the signal transmission piece and the through hole are arranged at intervals in the radial direction.

And the signal transmission piece and the insulating base are integrally cast and molded.

The base body is provided with a fastening structure which can be used for fastening the base body on the end cover of the point inspection hole of the circuit breaker in a sealing manner.

The fastening structure is a plurality of bolt through holes which are distributed along the circumferential direction and are arranged corresponding to the threaded blind holes on the point inspection hole end cover.

The fixed connection end of the signal transmission line is a connection ring which can be fixedly connected on the signal conductor through a screw.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a circuit breaker main fracture signal taking-out tool of the invention (a signal transmission line is not shown in the figure);

FIG. 2 is a schematic view of the mounting flange of FIG. 1;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic view of the mating of the insulating flange and terminal bar of FIG. 1;

FIG. 5 is a schematic diagram of a signal transmission line in an embodiment of a circuit breaker main fracture signal take-out tool of the invention;

Fig. 6 is a schematic diagram of connection between a signal transmission line and a signal conductor and a terminal rod in an embodiment of a tool for taking out a signal of a main fracture of a circuit breaker.

Detailed Description

the following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 6, the signal extraction tool comprises a base body which is hermetically mounted on an end cover of the circuit breaker in use, a terminal rod 3 which forms a switching terminal is integrally and penetratingly mounted in the base body, the inner end of the terminal rod 3 is located in a cavity of the circuit breaker in use, the outer end of the terminal rod 3 is located outside a shell of the circuit breaker, and a signal transmission line 7 is fixedly connected between the inner end of the terminal rod 3 and a signal conductor of the circuit breaker.

During the use, pedestal fixed mounting avoids additionally trompil and produces the trompil degree of difficulty big on the circuit breaker casing on the point inspection hole end cover of seting up on the circuit breaker casing, changes the problem that the casing structure is with high costs and appears. Specifically, the base body comprises a fixed flange 1 which is arranged on the end cover of the point inspection hole to form the base, a through hole 11 for the terminal rod 3 to pass through is formed in the fixed flange 1, and the size of the through hole 11 is smaller than the inner diameter of the point inspection hole. As can be seen from fig. 1, the inner diameter of the through hole 11 is larger than the outer diameter of the terminal rod 3, so that the terminal rod is not in direct contact with the fixing flange, and on one hand, the insulation between the terminal rod and the fixing flange is ensured; on the other hand, in the signal taking-out process, even if the terminal rod moves in the axial direction, friction between the terminal rod and the hole wall of the through hole of the fixing flange can be avoided, and foreign matters are prevented from being generated. When the fixing flange 1 is used, an annular groove is formed in the butt joint side face of the fixing flange 1, which is in butt joint with the end cover of the point inspection hole, and a first sealing ring 5 is embedded in the annular groove. A circle of bolt through holes 12 are formed in the edge of the fixing flange, the circle of bolt through holes 12 form a connecting structure, the fixing flange is fixedly installed on the point inspection hole end cover through bolts and tightly presses a sealing ring on the fixing flange during use, and the sealing of a cavity of the circuit breaker is achieved. Meanwhile, a circle of threaded blind holes 13 are formed in the other axial side face of the fixed flange on the radial inner side of the bolt through holes.

The base body further comprises an insulating flange 2 fixed on the other axial side face of the fixed flange and forming an insulating base, the insulating flange 2 and the terminal rod 3 are integrally molded by casting, and two ends of the terminal rod 3 penetrate out from two axial ends of the insulating flange. An annular groove is formed in the axial side face, facing the fixed flange, of the insulating flange 2, and a second sealing ring 6 is embedded in the annular groove in use. The insulating flange is provided with a circle of screw through holes which are correspondingly communicated with the thread blind holes on the fixing flange, when the insulating flange is used, the screws 4 penetrate through the screw through holes and are screwed into the thread blind holes, the fixing between the insulating flange and the fixing flange is realized, the fixing is connected with the pressing sealing ring to realize sealing, and the elastic washer is arranged between the head of each screw 4 and the insulating flange in a pressing mode and used for preventing looseness.

In the invention, the terminal rod comprises a rod-shaped body, two screw holes 31 are respectively formed in the inner end and the outer end of the rod-shaped body, and the screw holes 31 are threaded blind holes. The signal transmission line 7 of this embodiment is flexible structure, and the both ends of signal transmission line have set firmly go-between 71 respectively, and during the concrete use, compress tightly the go-between of signal transmission line one end in the screw hole department of bar-shaped body through the screw, and the go-between of the other end passes through the fix with screw on the signal conductor of circuit breaker, the signal conductor of intercommunication terminal stick and circuit breaker. The length of the signal transmission line is greater than the length between the wiring part of the terminal rod and the wiring part of the signal conductor, so that the signal transmission line is provided with the bent buffer section, the installation is convenient, and meanwhile, when the circuit breaker vibrates, the connecting ring of the signal transmission line can shake together with the correspondingly connected signal conductor, and the sliding friction condition cannot occur.

When the circuit breaker is used, one end of a signal transmission line is fixedly connected with a signal conductor, the other end of the signal transmission line is connected with a terminal rod, and finally, the base body and the terminal rod are hermetically arranged on the shell of the circuit breaker and filled with SF ₆ gas for testing.

According to the invention, when the breaker vibrates, bolts for fixing the insulating flange may loosen, at the moment, the insulating flange may shift a certain distance in a direction departing from the breaker, but the sealing ring between the insulating flange and the fixing flange is still in a compressed state, so that the sealing performance can be ensured. Moreover, even if the insulating flange drives the terminal rod to move for a certain distance in the direction deviating from the breaker, the length of the signal transmission line is large, the signal transmission line cannot be in a stretching state, and the signal transmission line is not affected.

The terminal rod constitutes signal transmission spare, and in other embodiments, signal transmission spare's cross-section can design according to actual conditions, and in addition, not only can be integrated into one piece's relation between signal transmission spare and the pedestal, also can be the relation of fixed assembly.