CN2468143Y

CN2468143Y - Non-load capacitor tap changer

Info

Publication number: CN2468143Y
Application number: CN 01212756
Authority: CN
Inventors: 秦伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-15
Filing date: 2001-03-15
Publication date: 2001-12-26
Anticipated expiration: 2011-03-15

Abstract

The utility model relates to a non-load capacitor tap changer used for regulating the output capacitance, which is composed of an operating mechanism, a main shaft, a supporting seat, an insulating rod, a movable contact, static contacts, a wiring terminal, etc. The movable contact is driven to rotate on each static contact by a rotating shaft through the rotation of the operating mechanism under the condition of cutting a capacitor from an electric network, theavailable output of the capacitor is changed, and an output terminal and a system have multiple connection methods. The utility model has the advantages of simple structure and convenient operation, and is suitable particularly for assembling capacitors with the parallel connection of a single high voltage and a three-phase high voltage.

Description

No-load capacitor shunting switch

The utility model relates to a kind of no-load capacitor shunting switch that is used for capacitor, is a kind of brand-new mode of connection infrastructure product.

Its each group capacitor of aggregation type high voltage shunt capacitor all has insulator output on case lid in the market, and the actual effective output of integral capacitor device is then finished by the artificial changing-over of the brace between insulator, and is more loaded down with trivial details, time-consuming, reliability is not high.The occasion that has is that terminal is caused the control room, is mounted with fling-cut switch there and realizes, lead-in wire is many and grow like this, the cost height because in air, insulate, radiating condition is poor, its switch overcurrent is big, the step voltage height, so this volume of switch is huge, cost is also high.Simultaneously capacitor top insulator is too much, may cause the case lid area big, let out ooze a little also many, not attractive in appearance, be difficult to maintenance.

The purpose of this utility model is to avoid above-mentioned weak point, and a kind of simple in structure, installation, use, easy maintenance, no-load capacitor shunting switch that reliability is high are provided.

The purpose of this utility model is realized by following scheme.Has operating mechanism 1, Switch main body 14, it is characterized in that bearing 2,3 is arranged on the body 14, be coated with rotating shaft 4 in the bearing, the bearing periphery is provided with insulating bar 5, is furnished with fixed contact 6 on the insulating bar, and fixed contact 6 links to each other with each group

capacitor heel sub

8,9 and lead-out terminal 10, link to each other with capacitor system by lead-out terminal on the

body

10,8,9,10 terminals exist together mutually and link to each other with flow deflector 12.Every have three groups of moving contacts 7 mutually, and two groups of moving contacts connect 10,9 when primary importance, and another group connects 10,8; When the second place two groups when connecting 10 and 9, the three positions only one group connect 10 and 8.Moving contact engages with fixed contact in the rotating shaft, and moving contact 7 is the clip type structure.

Operating mechanism 1 can be a motor drive mechanism in the such scheme, also can be man-operating mechanism, and Switch main body can vertically be arranged, also can be horizontal layout.

According to such scheme, principal character of the present utility model is to have on the body bearing 2,3, be coated with rotating shaft 4 in the bearing, the bearing periphery is provided with insulating bar 5, insulating bar is provided with fixed contact 6, fixed contact 6 links to each other with each group

capacitor heel sub

8,9 lead-out terminal 10, links to each other with capacitor system by lead-out terminal on the

body

10, and 8,9,10 terminals exist together mutually and link to each other with flow deflector 12.Every have three groups of moving contacts 7 mutually, and two groups of moving contacts connect 10,9 when primary importance, and another group connects 10,8; When the second place two groups when connecting 10 and 9, the three positions only one group connect 10 and 8.Moving contact engages with fixed contact in the rotating shaft, and moving contact 7 is the clip type structure.Rotation by operating mechanism 1. drives moving contact 7 rotations in the rotating shaft, changes the bonding station of moving contact 7, thereby has changed tap position, and effective output total capacitance is changed, and is more convenient by the connection of terminal 10, helps system parameters optimization and compensation.

This lead-out terminal 10 can have more modes of connection with system, as linking to each other with reactor etc.Moving contact 7 is the parallel clamp slice structure, and the carrying overcurrent capability is strong.Pass through flow deflector 12 simultaneously with the same terminal short circuit, concentrate output, improve operational reliability.

In the such scheme, according to its whenever drop into the difference of capacitors count mutually, the big or small moving contact of electric current can be three groups or six groups.Operating mechanism 1 can be motor drive mechanism and configuration is controlled, display, is convenient to monitoring.For small capacitor or consider cost factor, operating mechanism 1 can be manual, and when capacitor was single-phase, switch only had one to be single-phase switch mutually, and two, three phase times then use two, threephase switch, and the alternate mutually insulated of switch satisfies the capacitor insulation requirement.

The Switch main body structure is looked the integrated capacitor body structure to be needed to be designed to horizontal mounting means, places capacitor top under the case lid, also can vertical installation places a side of capacitor casing.

In the said structure principle, if two kinds of capacity outputs promptly constitute two position switchs, principle is with above-mentioned consistent.

The utility model features simple structure, manufacture easily, be widely used on various single-phase or three-phase integrated capacitor and other capacitors.

Below in conjunction with accompanying drawing an embodiment of the present utility model is described.

Fig. 1 is the front view of threephase switch three capacity output embodiment of the present utility model.

Fig. 2 is the E-E view of Fig. 1.

Fig. 3 is the F-F view of Fig. 1.

Fig. 4 is the G-G view of Fig. 1.

Fig. 5 is the W phase connection schematic diagram of Fig. 1.

Another embodiment of the utility model is that the triphase horizontal of one or three kinds of capacity outputs is installed no-load capacitor shunting switch shown in Fig. 1,2,3,4,5.Case lid 13 tops are switch electric operating mechanism 1, have binding post to link to each other with the control display in the mechanism.The case lid bottom is a Switch main body 14, has the left support abutment 2 that is connected in motor drive mechanism, be connected in the right support abutment 3 of case lid, be coated with rotating shaft 4 in the bearing, by supporter 11 is every three groups of clip type moving contacts 7 are housed mutually in the rotating shaft, the bearing periphery has insulating bar 5, every fixed contact 6, lead-out

terminal

8,9,10 of being furnished with mutually on the bar, fixed contact links to each other with each capacitor terminal and lead-out

terminal

8,9,10, connection such as certain reactor or directly go out case lid by insulator and link to each other with system electrical equipment in 10 of lead-out terminals and the capacitor is realized voluntarily by client.

The capacitor other end then by switch directly with case lid on corresponding insulator link to each other.

Its operation principle is: as shown in Figure 5, and W ₁, W ₂For this fixes lead-out terminal, directly do not link to each other W with switch ₁' be lead-out terminal 8, W ₂' be lead-out terminal 9, W is variable lead-out terminal 10, corresponding with switch respectively fixed contact 6 links to each other.When two moving contact groups of switch are in left position together (shown in Fig. 2～4), W connects W ₁', other two groups of moving contacts are current-carrying not, exports one group of capacitance; When three moving contacts of switch mediated, two groups of W connected W ₂', export two groups of capacitances, another moving contact is current-carrying not; When three moving contacts of switch are in right position, three groups of full current-carrying of moving contact, W connects W ₂', W connects W ₁', export whole capacitances.Promptly realized that by switch motion the variation of capacity output regulates, and each phase contact is fully used all, three alternate mutually insulateds, same terminal is all by the flow deflector short circuit.W is for terminal block usefulness, in order to further raising power grid quality.

The configurable controller of above-mentioned switch if operating mechanism is manually on the case lid, then is a hand switch, and this hand switch also can be set up the monitoring position display.

Above switch carries out after capacitor must being excised from electrical network when regulating, and guarantees the no-load adjusting.The vertical placement of above Switch main body is promptly constituted vertical mounting means, be characterized in high and narrow.

When voltage is lower, output progression is when less, and the Switch main body overall structure can be designed to bar shaped or disk-shaped structure.

This utility model can be widely used in aggregation type high voltage shunt capacitor.

Claims

1, a kind of no-load capacitor shunting switch that is used for capacitor, have operating mechanism 1, Switch main body 14, it is characterized in that bearing 2,3 is arranged on the body 14, be coated with rotating shaft 4 in the bearing, the bearing periphery is provided with insulating bar 5, is furnished with fixed contact 6 on the insulating bar, and fixed contact 6 links to each other with each group capacitor heel sub 8,9 lead-out terminal 10, link to each other with capacitor system by lead-out terminal on the body 10,8,9,10 terminals exist together mutually and link to each other with flow deflector 12.Every have three groups of moving contacts 7 mutually, and two groups of moving contacts connect 10,9 when primary importance, and another group connects 10,8; When the second place two groups when connecting 10 and 9, the three positions only one group connect 10 and 8.Moving contact engages with fixed contact in the rotating shaft, and moving contact 7 is the clip type structure.

2, by the described no-load capacitor of claim 1 shunting switch, it is electronic to it is characterized in that operating mechanism 1 can be, and also can be manual operation.

3, by claim 1 or 2 described no-load capacitor shunting switchs, it is characterized in that Switch main body 14 can vertically arrange, also can horizontally arrange.