CN205680612U - A kind of structure of contact terminal of vacuum circuit breaker - Google Patents

Abstract

This utility model belongs to high-pressure vacuum breaker field, the structure of contact terminal of a kind of vacuum circuit breaker.The moving contact of moving contact structure and movable contact conducting bar, the Cu/W cubic units formed by cubic units W rib and cubic units Cu block is constituted, and cubic units Cu block is filled in cubic units W rib；The static contact of static contact structure and static contact conducting rod, the cubic units formed by cubic units W rib and cubic units Cu block is constituted, and cubic units Cu block is filled in cubic units W rib.This utility model makes vacuum circuit breaker when cut-offfing, due to frame structure and the effect in parallel of Cu, W, new structure of contact terminal can increase thermal conductivity and the electrical conductivity of structure of contact terminal, increase contact surface heat radiation, reduce the electric arc ablation to contact surface, thus reducing the generation of metallic vapour, facilitation is played in extinguishing quick to electric arc.

Description

A kind of structure of contact terminal of vacuum circuit breaker

Technical field

This utility model belongs to high-pressure vacuum breaker field, the structure of contact terminal of a kind of vacuum circuit breaker.

Background technology

In power system, high-tension switch gear plays control and protective effect.Primary cut-out is mostly important electrically to set Standby, it is mainly used in closing, cut-offfing circuit.Along with China's power industry fast development, the runnability of electric equipment products, prescription More and more higher, national environmental protection consciousness is increasingly stronger, and high-pressure vacuum breaker, as the leading products of high-voltage switch gear, at high pressure, surpasses High voltage power transmisson system plays important control and protective effect.

Contact is the critical component of the high-voltage switch gears such as chopper, and the contacts for vacuum-break switches structure in currently using mainly is adopted Magnetic structure is indulged, using Cu, W metal as making material, owing to, in chopper, contact plays conducting and the work cut-off with cup-shaped With, this just requires that its contact material and structure of contact terminal should have a following performance: 1, the ability of big breaking current；2, high conduction And the capacity of heat transmission；3, excellent resistance fusion welding energy；4, excellent resistance to electrical arc erosion performance；5, high pressure voltage and low damming Value.

Determine the development of chopper due to structure of contact terminal to a great extent, therefore design new structure of contact terminal, make new Type structure of contact terminal can improve electrical conductivity and thermal conductivity, resistance to electrical arc erosion and the resistance fusion welding energy of contact, thus increase vacuum and break The connecting-disconnecting function of road device.

Utility model content

The purpose of this utility model is to provide the structure of contact terminal of a kind of vacuum circuit breaker, is improving existing structure of contact terminal, Promote the connecting-disconnecting function of contact, structure of contact terminal electrical conductivity and thermal conductivity high, make contact surface rapid heat dissipation, reduce contact surface temperature Degree, electric arc is little to the ablation of contact surface, reduces the generation of metallic vapour, accelerates the extinguishing of electric arc.

The technical solution of the utility model is:

The structure of contact terminal of a kind of vacuum circuit breaker, including moving contact structure and static contact structure, the dynamic of moving contact structure touches Head and movable contact conducting bar, the Cu/W cubic units formed by cubic units W rib and cubic units Cu block is constituted, vertical Cube unit Cu block is filled in cubic units W rib；The static contact of static contact structure and static contact conducting rod, by cube The cubic units of unit W rib and cubic units Cu block composition is constituted, and cubic units Cu block is filled in cubic units W rib In.

The structure of contact terminal of described vacuum circuit breaker, six ribs of Cu/W cubic units are the one knot that tungsten is constituted Structure, in addition to cubic units W rib, remainder is made up of cubic units Cu block.

The structure of contact terminal of described vacuum circuit breaker, cubic units Cu block is for closely cooperating knot with cubic units W rib Structure.

The structure of contact terminal of described vacuum circuit breaker, each cubic units W rib is 1/4 cylinder, adjacent four cubes Four cubic units W ribs between unit are combined as a W cylinder.

The structure of contact terminal of described vacuum circuit breaker, the W cylinder of three axial X, Y, Z be connected through, be interweaved, formed The general frame part that cubic units W rib is constituted；Cubic units Cu block in each cubic units is connected through, is formed The integral-filled part that cubic units Cu block is constituted.

The structure of contact terminal of described vacuum circuit breaker, the general frame part of cubic units W rib composition, cubic units The integral-filled part combination that Cu block is constituted, forms the structure of contact terminal that Cu block is filled partly and W framework is constituted, this Cu block filling part Divide and the structure of contact terminal of W framework composition is conducting rod and contact two parts composition.

The structure of contact terminal of described vacuum circuit breaker, the W cylinder of Z-axis direction and the longitudinal axis parallel of structure of contact terminal, X-axis The plane formed to the W cylinder of, Y-axis, with the longitudinal axis orthogonal of structure of contact terminal.

The structure of contact terminal of described vacuum circuit breaker, the W cylinder of Z-axis direction and structure of contact terminal conducting rod angle are 0 °, each The X of cubic units, Y shape become plane and structure of contact terminal conducting rod angle to be 90 °.

Advantage of the present utility model and providing the benefit that:

1, this utility model structure of contact terminal is constituted with many small cubic units, six of the most each cubic units Rib is made up of metal W, and prism shape is 1/4 cylinder, and the prism of four adjacent cubic units is a cylinder altogether, and three axially Cylinder rib be interweaved composition many small cube frames, these cube frames are built into the general frame of structure of contact terminal Part, in addition to W framework, the remainder of structure of contact terminal is filled by copper, and copper billet is a porose entirety.Open at primary cut-out Can produce high temperature, the electric arc of a high light during disconnected line fault, primary cut-out to cut-off faulty circuit in effective time, extinguishes Electric arc.New structure of contact terminal can accelerate contact heat radiation, reduces contact surface temperature, reduces the generation of metallic vapour, accelerates electric arc Extinguish.Therefore, it can effectively improve primary cut-out break performance, ensure circuit and the safety of substantial equipment, safeguard electrical network Stable operation.

2, the novel contact configurations that this utility model uses, owing to each small cubes uses W to do six rib frameworks, Cu pair Remainder is filled, when each small cubic units during electric current flows through structure of contact terminal, in cubic units circuit model Electric current becomes the parallel connection of three branch roads, and i.e. one paths is that Article 2 is edge along the pure tungsten cylinder rib branch road being parallel to conducting rod The fine copper branch road at cubic units center, third path is the combined finger along copper-tungsten-copper.According to circuit in parallel principle, electricity Road parallel resistance reduces, and conductance increases, it is assumed that there is not gap between each cubic units, then for whole structure of contact terminal For structure in parallel make the electrical conductivity of structure of contact terminal significantly increase, electric conductivity improves.Further, since W framework has high Fusing point, low linear expansion coefficient and high intensity, and Cu and W have extremely low mutual solubility, so novel contact configurations can The heat conductivility good to give full play to pure Cu so that it is heat conduction, electric conductivity are superior to alloy contact.

Accompanying drawing explanation

Fig. 1 is existing moving contact of breaker structural representation；

Fig. 2 is existing circuit breaker static contact structural representation；

Fig. 3 is that this utility model constitutes contact and the cubic units schematic diagram of conducting rod；

Fig. 4 is the W rib schematic diagram of this utility model cubic units；

Fig. 5 is the Cu block schematic diagram of this utility model cubic units；

Fig. 6 is that adjacent four W ribs of this utility model cubic units form a cylinder schematic diagram；

Fig. 7 is the structure of contact terminal general frame part schematic diagram of the W rib composition of this utility model cubic units；

Fig. 8 is the Cu block that this utility model fills the porose cubic units of structure of contact terminal general frame part (W framework) Integral-filled partial schematic diagram；

Fig. 9 is this utility model structure of contact terminal overall schematic；

Figure 10 is the angle figure of this utility model W framework and conducting rod axis；

In figure: 1, moving contact sheet；2, moving contact；3, moving contact suspension electrode；4, corrugated tube；5, bellows shield cover；6、 Movable contact conducting bar；7, static contact sheet；8, static contact；9, static contact suspension electrode；10, static contact conducting rod；11, cube list Unit；12, cubic units W rib；13, cubic units Cu block；14, W cylinder；15, the general frame that cubic units W rib is constituted Part；16, the integral-filled part that cubic units Cu block is constituted；17, Cu block fills the contact knot of part and W framework composition Structure: 18, conducting rod；19, W framework；20, contact.

Detailed description of the invention

As Figure 1-Figure 2, the structure of contact terminal of existing vacuum circuit breaker includes moving contact structure and static contact structure, its In: moving contact structure contains moving contact sheet 1, moving contact 2, moving contact suspension electrode 3, corrugated tube 4, bellows shield cover 5, moves and touch Head conducting rod 6, movable contact conducting bar 6 is provided with moving contact 2, moving contact suspension electrode 3, corrugated tube 4, and moving contact sheet 1 is arranged at Moving contact 2 outer end, the outside of corrugated tube 4 arranges bellows shield cover 5；Static contact structure contains static contact sheet 7, static contact 8, quiet Contact suspension electrode 9, static contact conducting rod 10, static contact conducting rod 10 is provided with static contact 8, static contact suspension electrode 9, stationary contact Head sheet 7 is arranged at static contact 8 outer end.

As shown in Fig. 3-Figure 10, in this utility model, the moving contact 2 of moving contact structure and movable contact conducting bar 6, by being permitted The Cu/W cubic units 11 of the most small cubic units W rib 12 and cubic units Cu block 13 composition is constituted, cube list Unit's Cu block 13 (Fig. 5) is filled in cubic units W rib 12 (Fig. 4).Equally, static contact 8 and the static contact of static contact structure is led Electric pole 10, the cubic units formed by many small cubic units W ribs 12 and cubic units Cu block 13 (Cu/W) 11 are constituted, and cubic units Cu block 13 (Fig. 5) is filled in cubic units W rib 12 (Fig. 4).

As it is shown on figure 3, six cubic units W ribs 12 of this utility model Cu/W cubic units 11 are constituted for tungsten Integrative-structure, in addition to cubic units W rib 12, remainder is made up of cubic units Cu block 13.

As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, this utility model each cubic units W rib 12 is 1/4 cylinder, adjacent four Four cubic units W ribs 12 between cubic units 11 are combined as a W cylinder 14.Cubic units Cu block 13 be with cube Body unit W rib 12 closely cooperates structure, forms cubic units 11.

As it is shown in fig. 7, the W cylinder 14 of this utility model three axially (X, Y, Z) be connected through, be interweaved, formed vertical The general frame part 15 that cube unit W rib is constituted.As shown in Figure 8, each cubic units of this utility model 11 (square) Interior cubic units Cu block 13 is connected through, and each cubic units Cu block 13 is provided with hole, forms cubic units Cu block The integral-filled part 16 constituted.

As shown in Fig. 7, Fig. 8, Fig. 9, the general frame part 15 of this utility model cubic units W rib composition, cube The integral-filled part 16 that unit Cu block is constituted combines, and forms Cu block and fills the structure of contact terminal 17 that part is constituted with W framework, this Cu It is conducting rod 18 and contact 20 two parts composition that block fills the structure of contact terminal 17 of part and W framework composition.

As shown in Fig. 6, Figure 10, the W cylinder 14 of this utility model Z-axis direction is put down with structure of contact terminal conducting rod 18 (longitudinal axis) OK, i.e. the W cylinder 14 of Z-axis direction is 0 ° with structure of contact terminal conducting rod 18 angle；The plane that X axis, the W cylinder 14 of Y-axis are formed, Vertical with the axis of structure of contact terminal W framework 19, the X of the most each cubic units 11, Y shape become plane and structure of contact terminal conducting rod 18 Angle is 90 °.

Can produce high temperature, the electric arc of a high light when primary cut-out cut-offs line fault, primary cut-out will be effectively Cut-off faulty circuit in time, extinguish electric arc.The structure of contact terminal of above-mentioned vacuum circuit breaker, when vacuum circuit breaker cut-offs, due to Frame structure and the effect in parallel of Cu, W, it is possible to increase thermal conductivity and the electrical conductivity of structure of contact terminal, increase structure of contact terminal surface and dissipate Heat, reduces the electric arc ablation to structure of contact terminal surface, thus reduces the generation of metallic vapour, and promotion is played in extinguishing quick to electric arc Effect.

Claims (8)

1. a structure of contact terminal for vacuum circuit breaker, including moving contact structure and static contact structure, it is characterised in that moving contact is tied The moving contact of structure and movable contact conducting bar, the Cu/W cube list formed by cubic units W rib and cubic units Cu block Unit is constituted, and cubic units Cu block is filled in cubic units W rib；The static contact of static contact structure and static contact conducting rod, The cubic units formed by cubic units W rib and cubic units Cu block is constituted, and cubic units Cu block is filled in vertical In cube unit W rib.

The structure of contact terminal of vacuum circuit breaker the most according to claim 1, it is characterised in that six of Cu/W cubic units Rib is the integrative-structure that tungsten is constituted, and in addition to cubic units W rib, remainder is made up of cubic units Cu block.

The structure of contact terminal of vacuum circuit breaker the most according to claim 1, it is characterised in that cubic units Cu block is with vertical Cube unit W rib closely cooperates structure.

The structure of contact terminal of vacuum circuit breaker the most according to claim 1, it is characterised in that each cubic units W rib is 1/4 cylinder, four cubic units W ribs between adjacent four cubic units are combined as a W cylinder.

The structure of contact terminal of vacuum circuit breaker the most according to claim 4, it is characterised in that the W cylinder of three axial X, Y, Z Be connected through, be interweaved, formed cubic units W rib constitute general frame part；In each cubic units cube Body unit Cu block is connected through, forms the integral-filled part that cubic units Cu block is constituted.

The structure of contact terminal of vacuum circuit breaker the most according to claim 5, it is characterised in that cubic units W rib is constituted The integral-filled part combination that general frame part, cubic units Cu block are constituted, forms Cu block filling part and W framework is constituted Structure of contact terminal, this Cu block fill part and W framework constitute structure of contact terminal be conducting rod and contact two parts composition.

The structure of contact terminal of vacuum circuit breaker the most according to claim 5, it is characterised in that the W cylinder of Z-axis direction is tied with contact The longitudinal axis parallel of structure, the plane that X axis, the W cylinder of Y-axis are formed, with the longitudinal axis orthogonal of structure of contact terminal.

The structure of contact terminal of vacuum circuit breaker the most according to claim 7, it is characterised in that the W cylinder of Z-axis direction is tied with contact Structure conducting rod angle is 0 °, and the X of each cubic units, Y shape become plane and structure of contact terminal conducting rod angle to be 90 °.