CN85107181A - Three-phase combined type gas breaker - Google Patents

Abstract

Three-phase combined type gas breaker, its structure be with every phase independently disconnect pack in the cab signal box of earthing potential.Each phase disconnect is contained in respectively in the slider made of insulating material, and then in the cab signal box of packing into, the shape of this slider roughly is made up of along the next door of cab signal box inwall curved surface next door and the curved surface of dividing the gas between adjacent each phase in the three-phase.Therefore, can make small-sized, the compact superhigh pressure that does not damage opening performance, jumbo three-phase combined type gas breaker.

Description

Three-phase combined type gas breaker

The present invention belongs to the improvement that each phase disconnect in the three-phase is contained in the three-phase combined type gas breaker in the closed box of ground connection.

The structure of three-phase combined type gas breaker is at every phase this phase of installing disconnect in the insulating cylinder independently, and the insulating cylinder that then these is equipped with disconnect is installed in the common case that is in earthing potential together.The gas-break switch of this three-phase combined type was delivered in United States Patent (USP) " U.S.P3857006 " and " 4417111 " or Japan Patent " spy opens clear 56-114231 " number communique and " spy opens clear 56-118224 " number communique and " spy opens clear 60-37625 " number communique.

Fig. 9 and Figure 10 represent the example of this three-phase combined type gas breaker in the past, and wherein label 1 is the ground connection case, and each phase disconnect 50 is supported on the support 1a in U, the V that installs in the case, the W three-phase.15 for being contained in the control box on this support 1a, and the operating physical force of this control box 15 passes to each phase disconnect by link mechanism 11.

Each phase disconnect 50 roughly is installed in the ground connection case on support 1a top by 120 ° of intervals in ground connection case 1 in the above-mentioned three-phase, the structure of each phase disconnect 50 is roughly the same, it is that example is described as follows that act W cut-offs element 50W mutually: 2W is a fixed contact, and 4W is for carrying out the movable contact of switching action.This two contact 2W and 4W form the mutually a pair of contact that can switching of W.3W is an insulation nozzle, is contained in around the moving contact 4W with becoming concentric circles, and is installed on the air cylinder 51W.52W is the fixed piston that is embedded on the pneumatic cylinder 51W.The axle that is connected in air cylinder 51W is connected with control box 15 with link mechanism 11 by insulating bar 6W.13W is the insulating cylinder of accommodating W phase disconnect, tube top installing fixed contact 2W, and the tube bottom is the fracture supporter of the end of supporting fixed piston 52W, also plays alternate insulating effect simultaneously.Above-mentioned standing part all is installed in support 1a top by the support insulating cylinder 7W of hollow.10W is the additional reservoir of exhaust one side, and this container is contained in the fixed contact 2W upper end on above-mentioned insulating cylinder 13W top, 8W and 9W conduction, the outlet for drawing from disconnect 50W.

The drawing in side sectional elevation of Figure 10 for looking along Fig. 9 X-X line represents that each phase disconnect 50U, 50V, 50W are roughly by 120 ° of situations that are spaced in ground connection case 1.

But, this three-phase combined type gas breaker only adopts in little type of not high, the specified drop-out current of rated voltage and grade in the past, disconnect 50(U, V, W are housed) insulating cylinder 13(U, V, W) space is very little, its internal diameter is almost near air cylinder 51(U, V, W) external diameter.

On the other hand, the nearest gas-insulated switchgear device that uses at superhigh pressure, big capacity electric substation and switchyard, they are in main bus bar and branch bar etc. is the situation of three-phase combined type structure entirely, therefore claims and gas-break switch is also made the structure of three-phase combined type.In order to adapt to this requirement, when above-mentioned three-phase combined type gas breaker is used as superhigh pressure, big capacity electrical equipment, relate to the installing space problem of the electrode break shunt capacitor of installing in order to guarantee break performance, also be difficult to simultaneously to guarantee the space of the big required enough installation disconnect of voltage height, capacity.That is to say, for the necessary space of cylindrical shape insulating vessel that will guarantee to be adopted in the past, then certainly will cause the circuit breaker that occupation efficiency is very poor and shape is big, then having on the problem that is suitable for the gas gas-insulated switch influences the shortcoming that the equipment integral size is dwindled.

The objective of the invention is to: eliminate the shortcoming on the above-mentioned prior art, increasing is installed in the space of occupying in each interior phase insulating spacer of ground connection case, enlarge the gas compartment in the disconnect, keep breaking capability completely, thereby improve small-sized superhigh pressure, big capacity three-phase combined type gas breaker.

Begin a project in order to reach, the present invention has following feature: the insulating spacer that the disconnect of each phase in the three-phase is installed respectively is made up of two parts, a part is to divide the next door of adjacent each alternate gas, and another part is roughly along the next door of the ground connection chamber interior wall curved surface of interior each disconnect of dress.As required, also can between each phase electrode, shunt capacitance be installed in above-mentioned insulating spacer inside.

Fig. 1 is the sectional arrangement drawing of an example of expression three-phase combined type gas breaker of the present invention;

Fig. 2 is the drawing in side sectional elevation of the II-II line along Fig. 1;

Fig. 3 is the sectional arrangement drawing of the other example of expression the present invention;

Fig. 4 is the drawing in side sectional elevation of the IV-IV line along Fig. 3;

Fig. 5 and Fig. 7 are the sectional arrangement drawings of the various examples beyond the above-mentioned example of expression the present invention;

Fig. 6 and Fig. 8 represent the drawing in side sectional elevation of VII-VII line of VI-VI line along Fig. 5 and Fig. 7 respectively;

Fig. 9 and Figure 10 represent the three-phase combined type gas breaker structure that has earlier, and wherein Fig. 9 is a sectional arrangement drawing, and Figure 10 is the drawing in side sectional elevation of the X-X line along Fig. 9.

Describe various embodiment of the present invention in detail below with reference to Fig. 1 to Fig. 8, in addition, symbolic representation same parts or suitable parts identical among Fig. 1 to Fig. 8 with Fig. 9, Figure 10.

In the embodiment of Figure 1 and Figure 2, insulating spacer 23U, 23V, the 23W of interior dress each phase disconnect 50U, 50V50W are the hollow with sector crosssection, and these insulating spacers 23U, 23V, 23W roughly are equivalent to along the curved surface of ground connection case 1 inwall with the curved surface that ground connection case 1 the inside opposed part next door a forms.Each adjacent alternate part wall body b roughly forms opposed Y shape.According to this embodiment, shown in Fig. 2 midship section, can effectively utilize the gas compartment in the ground connection case 1, can enlarge the gas volume that disconnect 50 holds.Therefore, can in this insulating spacer 23, absorb the high-temperature ionized gas that a part produces along with cutting off action, from additional reservoir 10 gas be arranged to ground connection case 1, so can cut off big electric current then.

Fig. 3 and example shown in Figure 4, be that the cross section shape of above-mentioned insulating spacer is made insulating spacer 33U, 33V, the 33W that colludes jade (meniscate jade) shape, identical with above-mentioned example, the next door a of the part relative with ground connection case 1 the inside is made curved surface roughly be equivalent to along the curved surface of this ground connection case 1 inwall.

Each adjacent alternate next door b roughly forms the plane, and in this example, also attempt effectively utilizes the gas compartment in the ground connection case 1, and the gas volume of the disconnect 50 of dress in enlarging can improve rupturing capacity in limited space.

But the rupturing capacity for each fracture of increasing the disconnected device device of superhigh pressure, jumbo gas inserts shunt capacitor at the electrode place.

Fig. 5 to Fig. 8 represent in insulating spacer 23,33, to pack in the various embodiments described above embodiment of this shunt capacitor.

Fig. 5 and embodiment shown in Figure 6 are corresponding with the embodiment of above-mentioned Figure 1 and Figure 2, and Fig. 7 and embodiment shown in Figure 8 are corresponding with above-mentioned Fig. 3 and embodiment shown in Figure 4.

No matter in which embodiment, fracture parallel capacitor 14U, 14V, 14W etc. all are ceramic, are the part next door a of insulating spacer 23,33 thicker, and along this wall part branch this capacitor of packing into.

So, though insert the shunt capacitor 14 of fracture, there are enough gas compartments insulating spacer 23,33 inside of the disconnect 50 of dress in also fully guaranteeing, and can increase rupturing capacity more owing to above-mentioned capacitor.

According to the present invention, because can effectively utilize the interior space of grounding box, thereby enlarge the gas compartment of the disconnect of each phase, so small-sized, compact super-pressure, big capacity three-phase combined type gas breaker can be provided.

Claims (5)

1, three-phase combined type gas breaker has following feature, and promptly disconnect wherein is made up of following three parts: a pair of contact that can break-make; Nozzle made of insulating material, this nozzle can blow out the arc gas that goes out facing to cut off the electric arc guiding that takes place with corresponding every pair of contact; The producing component of blow gas pressure, this element is made up of piston and air cylinder, and improves arc quenching gas pressure along with the cut-out action of above-mentioned contact; This disconnect is installed in respectively using mutually in the slider made of insulating material in the three-phase respectively, this slider is installed in the cab signal box of the garden that is roughly tubular of ground connection together, the next door of aforesaid slider is divided into two parts, a part is to divide the next door of each the adjacent alternate gas in the three-phase, and another part is that its curved surface roughly is equivalent to along the next door of the curved surface of above-mentioned cab signal box inwall.

2,, it is characterized by and pack in the slider of each phase of above-mentioned three-phase being parallel to shunt capacitor between the pair of contact by the three-phase combined type gas breaker of claim 1.

3, by the three-phase combined type gas breaker of claim 1, it is characterized in that the stripped cross section that respectively is separated by in the above-mentioned three-phase roughly forms fan-shaped.

4, by the three-phase combined type gas breaker of claim 1, its cross section of slider that it is characterized by each phase in the above-mentioned three-phase roughly forms colludes beautiful shape.

5,, it is characterized by above-mentioned shunt capacitor and pack into respectively to be separated by and exsomatize in the isolated part relative with above-mentioned cab signal box by the three-phase combined type gas breaker of claim 2.

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