CN2842697Y

CN2842697Y - High-voltage high-current vacuum breaker fixing-sealing phase column

Info

Publication number: CN2842697Y
Application number: CN 200520098334
Authority: CN
Inventors: 郑玮; 陈家恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-08
Filing date: 2005-10-08
Publication date: 2006-11-29
Anticipated expiration: 2015-10-08

Abstract

The utility model relates to a high-voltage heavy-current vacuum circuit breaker fixing and sealing phase column, which comprises an insulating outer shell, a vacuum arc-extinguishing chamber, an upper conductive block, and a lower conductive block which is electrically connected with the moving end of the vacuum arc-extinguishing chamber, wherein the moving end of the vacuum arc-extinguishing chamber is fixed with a movable conductive block, and the lower conductive block is surrounded at the outer side of the movable conductive block. The outer surface of the movable conductive block and the inner surface of the lower conductive block are respectively provided with corresponding convex rails which are parallel with the direction of motion, two sides of every convex rail are matched with rolling wheels and a shaft used for positioning the rolling wheels at the same row is fixed to one side of the movable conductive block or the lower conductive block. The utility model having the advantages of reasonable structural design uses the rolling wheels as bridges for electrical connection, and the moving end of the vacuum arc-extinguishing chamber can be operated with portability. The number of the rolling wheels can be increased and reduced according to the degree of current, the rolling wheels can keep the electrical connection, favorable ventilating gaps can be kept between the movable conductive block and the lower conductive block and the inner temperature rise of the fixing and sealing phase column can be effectively controlled.

Description

The high-voltage great-current vacuum circuit-breaker seals the phase post admittedly

Technical field:

The utility model belongs to the high voltage electric power equip ment field, and particularly a kind of novel high-pressure high current vacuum circuit breaker seals the phase post admittedly.It is applied to the main accessory of high-tension electricity field as distribution system, guarantees that big electric current normally carries.

Background technology:

Existing high-pressure vacuum breaker phase post is divided into solid envelope and seals two classes admittedly, last conducting block that its main body includes vacuum interrupter, be solidly installed with vacuum interrupter and conductive contact, the following conducting block and the conductive contact that are electrically connected with the vacuum interrupter moved end.Not sealing the phase post admittedly is to be exposed in the air, utilizes air insulation, but owing to be subject to environment flying dust, humidity effect, power supply department will regularly have a power failure and clean, overhauls, and brings loss of outage bigger; Admittedly seal the phase post as the term suggests be outside vacuum interrupter and conducting block etc., to consolidate the front cover insulation crust, effectively overcome the influence of environment to it, reach characteristics non-maintaining, continuously-running, Gu but envelope also has negative defective, the heat that produces as contact resistance can't in time exchange, make phase post internal temperature rise height, jeopardize safe operation.The major part that tradition phase post produces heat has two places, and first standard component vacuum interrupter contact produces heat; Its two are vacuum interrupter moved ends with following conducting block between be electrically connected the heat that produces.The employing that is electrically connected with at present is flexible coupling, also be to be to adopt flexible conductor to be connected between moved end and the conducting block of vacuum interrupter, superpose the difference solid welding of two ends, back on conductive plate by abundant sheet metal, and in the high-voltage great-current environment, the stack enormous amount of sheet metal, not only take bigger space, and a large amount of sheet metal elasticity effect motoricity, mechanism's power finally increased.In the high-voltage great-current environment, solve to be electrically connected and the heat radiation of post mutually, and the different medium problem of expanding with heat and contract with cold, the problem that the utility model is studied promptly become.

Summary of the invention:

The purpose of this utility model is that a kind of high-voltage great-current vacuum circuit-breaker with good electrical connection and post heat radiation mutually of design seals the phase post admittedly.

Technical solutions of the utility model are achieved in that a kind of high-voltage great-current vacuum circuit-breaker seals the phase post admittedly, comprise insulation crust, the outside is encapsulated with the vacuum interrupter of elastic cord breaker, the portion of exposing that tightens together with vacuum interrupter is surrounded by the last conducting block of insulating barrier fin, the following conducting block that is electrically connected with the vacuum interrupter moved end, wherein shell upper and last conducting block and vacuum interrupter closely are solidly installed, one cavity that can allow the activity of vacuum interrupter moved end is formed at the bottom, the vacuum interrupter moved end is fixed with a movable conducting block, following conducting block is enclosed in the movable conducting block outside, described movable conducting block becomes polygon-shaped with following conducting block cross section, movable conducting block outer surface, following conducting block inner surface is respectively equipped with the corresponding protruding rail parallel with the direction of motion, the both sides of each road protruding rail respectively are equipped with a roller, and the location is fixed on one of movable conducting block or the following conducting block side with the axle of row's roller.Adopt roller as the bridge that is electrically connected, make the movable resistance between movable conducting block and following conducting block littler, easier controlling, and can be according to the quantity of different electric currents increase rollers, to reduce the magnitude of current by each roller.

The utlity model has reasonable in design, adopt roller as being electrically connected bridge, the rolling contact resistance is littler, it is lighter that the moved end of vacuum interrupter is controlled, not only can be according to the quantity of the size increase and decrease roller of electric current, and also roller had both kept electrical connection, again can maintenance activity conducting block and following conducting block between have good ventilation gap, can effectively overcome the influence of environment to it admittedly seal the phase post, wide adaptability reaches characteristics non-maintaining, continuously-running.

Description of drawings:

Below in conjunction with concrete legend the utility model is described further:

Fig. 1 seals phase post outside drawing admittedly

Fig. 2 Figure 1A-A cutaway view

Fig. 3 Figure 1B-B cutaway view

Movable conducting block of Fig. 4 and following conducting block graph of a relation

Wherein

1-shell 11-cavity 2-vacuum interrupter 21-moved end

Conducting block 41-protruding rail under the last conducting block 31-of the 3-fin 4-

The movable conducting block 7-of 5-elastic cord breaker 6-roller 71-axle

72-insulating bar 73-fastening spring 8-heat dissipation channel

Embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of high-voltage great-current vacuum circuit-breaker seals the phase post admittedly, the last conducting block 3 that comprises insulation crust 1, vacuum interrupter 2, tightens together with vacuum interrupter 2, the following conducting block 4 that is electrically connected with vacuum interrupter 2 moved ends, be fixed with fin 31 on the last conducting block 3, fin 31 exposes to part and is surrounded by insulating barrier, effectively plays heat radiation and guarantees necessary insulation safety.The contact site of vacuum interrupter 1, upper and lower conducting block 3,4 and shell 1 is encapsulated with elastic cord breaker 5, guarantees between device because of the coefficient of expansion difference reliability service under cold and hot or adverse circumstances.Wherein shell 1 top and last conducting block 3 and vacuum interrupter 2 closely are solidly installed, one cavity 11 that can allow 21 activities of vacuum interrupter moved end is formed at the bottom, vacuum interrupter moved end 21 is fixed with a movable conducting block 6, following conducting block 4 is enclosed in movable conducting block 6 outsides, described movable conducting block 6 becomes polygon-shaped with following conducting block 4 cross sections, especially be good with rectangle, and at movable conducting block 6 outer surfaces, following conducting block 4 inner surfaces are respectively equipped with the corresponding protruding rail 41 parallel with the direction of motion, the both sides of each road protruding rail 41 respectively are equipped with a roller 7, the location is fixed on one of movable conducting block 6 or following conducting block 4 side with the axle 71 of row's roller 7, is to be fixed on down conducting block 4 one sides in the legend.Transmit by axle 71 for fear of electric current, insulating at axle 71 two ends of positioning roller is fixed on the conducting block, and also promptly insulation is fixed on down on the conducting block 4.Also can earlier axle 71 be fixed on the insulating bar 72, again insulating bar 72 be fixed on down on the conducting block 4.Fixed form can adopt fixed limit plate on following conducting block 4 upper and lower end faces, and insulating bar 72 is limited in down among the conducting block 4, when avoiding the action of vacuum interrupter moved end, roller is pulled out.

As shown in Figure 4, more reliable for roller 7 is electrically connected, it is arranged with fastening spring 73 on the axle 71 of 7 on the roller on each road protruding rail roller 7 and another road protruding rail, forces roller 7 surfaces to conflict on protruding rail 41, forms reliably to be electrically connected.

Can increase or reduce the quantity of roller 7 according to the size of electric current.Movable conducting block 6 is provided with the above roller 7 of two rows from top to bottom with 4 of following conducting blocks, and is equipped with two rollers 7 more than arranging on each limit of 4 of polygonal movable conducting block 6 and following conducting blocks, satisfies the need of big electric current environment.

As Fig. 1 and Fig. 3, be provided with heat dissipation channel 8 between shell 1 and vacuum interrupter 2 external insulation layers, this heat dissipation channel 8 is connected with cavity 11, thermal current can enter from the phase column bottom like this, discharge from heat dissipation channel 8 outlets of eminence again through cavity, form convection current, help the heat radiation of internal electrical junction.

Claims

1, a kind of high-voltage great-current vacuum circuit-breaker seals the phase post admittedly, comprise insulation crust, the outside is encapsulated with the vacuum interrupter of elastic cord breaker, the portion of exposing that tightens together with vacuum interrupter is surrounded by the last conducting block of insulating barrier fin, the following conducting block that is electrically connected with the vacuum interrupter moved end, it is characterized in that shell upper and last conducting block and vacuum interrupter closely are solidly installed, one cavity that can allow the activity of vacuum interrupter moved end is formed at the bottom, the vacuum interrupter moved end is fixed with a movable conducting block, following conducting block is enclosed in the movable conducting block outside, described movable conducting block becomes polygon-shaped with following conducting block cross section, movable conducting block outer surface, following conducting block inner surface is respectively equipped with the corresponding protruding rail parallel with the direction of motion, the both sides of each road protruding rail respectively are equipped with a roller, and the location is fixed on one of movable conducting block or the following conducting block side with the axle of row's roller.

2, high-voltage great-current vacuum circuit-breaker according to claim 1 seals the phase post admittedly, it is characterized in that being arranged with fastening spring on the axle between each road protruding rail roller and another road protruding rail roller.

3, high-voltage great-current vacuum circuit-breaker according to claim 1 and 2 seals the phase post admittedly, it is characterized in that being provided with between movable conducting block and following conducting block the above roller of two rows from top to bottom.

4, high-voltage great-current vacuum circuit-breaker according to claim 3 seals the phase post admittedly, it is characterized in that being equipped with on each limit between polygonal movable conducting block and following conducting block the above roller of two rows.

5, high-voltage great-current vacuum circuit-breaker according to claim 1 seals the phase post admittedly, it is characterized in that being provided with heat dissipation channel between shell and vacuum interrupter external insulation layer, and this heat dissipation channel is connected with cavity.

6, high-voltage great-current vacuum circuit-breaker according to claim 1 seals the phase post admittedly, it is characterized in that the contact site of vacuum interrupter, upper and lower conducting block and shell is encapsulated with elastic cord breaker.

7, high-voltage great-current vacuum circuit-breaker according to claim 1 seals the phase post admittedly, it is characterized in that the axle two ends insulation of positioning roller is fixed on the conducting block.

8, high-voltage great-current vacuum circuit-breaker according to claim 1 seals the phase post admittedly, it is characterized in that axle is fixed on the insulating bar, and insulating bar is fixed on down on the conducting block.