CN2158568Y

CN2158568Y - High voltage switch

Info

Publication number: CN2158568Y
Application number: CN93214736U
Authority: CN
Inventors: 杜锡仁
Original assignee: LOCALLY-ADMINISTERED STATE XIANGSHAN HIGH-VOLTAGE ELECTRICAL APPLIANCES FACTORY
Current assignee: LOCALLY-ADMINISTERED STATE XIANGSHAN HIGH-VOLTAGE ELECTRICAL APPLIANCES FACTORY
Priority date: 1993-06-03
Filing date: 1993-06-03
Publication date: 1994-03-09
Anticipated expiration: 2003-06-03

Abstract

The utility model discloses a high voltage load switch, which is composed of a base frame, an insulator, a touch seat, a supporting seat, a main blade, a main shaft, a draw rod, an arc-extinguishing tube, a separating and closing brake spring, etc. The utility model which is used as load switch to switch off load current and close short circuit current has the advantages of reasonable and compact structure and simple and convenient operation. The utility model enlarges the creepage distance, enhances the insulating performance and ensures the safety of the operation of the load switch due to the improvement of the shape structure of the insulator. The utility model is suitable for various working conditions and enlarges a use range. The shape feature of an installing hole is simultaneously improved to cause the installation and exchange of a switch to be convenient and labour-saving, and workers' labou strength is reduced.

Description

High voltage switch

The utility model relates to and is applicable to and exchanges the indoor ac high-voltage on-load switch of using in 50HZ, the 10KV networking.

As cut-offfing the high voltage load switch that short circuit current is closed in load current and pass, must possess the good insulation performance performance, but the insulation of high voltage load switch of the prior art is common insulation, because its creepage distance is short, thereby in environment for use a little under the condition of severe, insulation fault often takes place, and has influenced the security reliability of on-load switch operation.In addition, the defective of former on-load switch also is to install cumbersome, generally needs 2 people to carry out simultaneously, and a people shoulders body, and people's fastening bolt is no matter install and all sense inconvenience of transposing.

The utility model improves at the existing in prior technology defective, and purpose is to propose all high voltage load switches very easily of a kind of good insulation preformance, installation, transposing.

Description of drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is the A-A cutaway view of Fig. 1.

With reference to the accompanying drawings 1～2, the utility model high voltage load switch has a splicing underframe (7) that is fixed on the frame shape on foot wall or the switch cubicle, both sides are sides (3) of angle-square-shaped, open in underframe side (3) with the installing hole that foot wall or switch cubicle are fixed, upper hole slot (2) for opening, be convenient to simultaneously handle operation when articulating this switch, specially open a construction opening groove (14) on another angle square limit of side, add the long arc degree.

Play six insulators (4) of support effect with the alternate equidistant arrangement of big or small spiral shell ridge (13), by being bolted on the underframe (7), upper and lower insulator (4) is equipped with the touch base (5) that connects external power, the bearing (10) that connects load and main blade (12) respectively, form major loop, fixing between main blade (12) and the bearing (10) by extension spring and pin (11).

The main shaft (1) that operation rotating disk (9) and divide-shut brake spring (8) are housed passes underframe side (3) pre-manufactured hole.Be welded on that connecting lever (15) on the main shaft (1) links to each other with insulated tension pole (16) and hinged with main blade (12), main shaft (1) rotates and makes main blade (12) motion, and arc-extinguishing tube (6) is equipped with at three groups of main blades middle parts, and a whole set of arc-control device is housed in the arc-extinguishing tube.

When on-load switch closed a floodgate, major loop was in parallel with subsidiary loop, the electric current major part major loop of flowing through.And when needs cut-off load current, by external force maneuvering dial (9), main shaft (1) is rotated, drive connecting lever (15) and then promote insulated tension pole (16), make main blade (12) reach the disjunction state, in the moment of disjunction together with arc-extinguishing tube (6), when causing length of spring compressed in the arc-extinguishing tube (6) to a certain extreme position, moving arcing contact separates the electric arc that is produced fast and contacts with arc-extinguishing tube, arc extinguishing rod with the quiet arc contact, produce a certain amount of gas, and electric arc is extinguished rapidly.

The one divide-shut brake spring (8) that acts on the main shaft (1) is housed on the side (3) of underframe (7), and by the rotating drive spring energy-storage of rotating disk (9), during to a certain extreme position, spring energy discharges, and realizes quick divide-shut brake.

When this on-load switch is installed, should make switch be in closing position.And when handle made progress, on-load switch should be closing position, when handle is downward, should be the separating brake position.

The utility model is compared with known technology, has not only kept the compact and reasonable of original structure, property simple to operation, because improvement to the insulator shape and structure, strengthened creepage distance, expanded 258mm to, insulation property are improved by original 190mm, even operating mode is abominable, what also can guarantee to move is safe and reliable, and simultaneously, the improvement of installing hole guarantees to install, transposing is convenient and strength-saving, not only can alleviate labor strength, and can enhance productivity greatly.

Claims

1, a kind of high voltage load switch, comprise the underframe (7) that is fixed on foot wall or the switch cubicle, six insulators (4) are fixed on the underframe, touch base (5), bearing (10) and main blade (12) are housed respectively on the upper and lower insulator, form major loop, fixing between main blade and the bearing by extension spring and pin (11); The main shaft (1) that operation rotating disk (9) is housed passes underframe side (3) pre-manufactured hole, the connecting lever (15) that is fixed on the main shaft (1) is hinged by insulated tension pole (16) and main blade (12), arc-extinguishing tube (6) is equipped with at three groups of main blade middle parts, the one divide-shut brake spring (8) that acts on the main shaft (1) is housed on the underframe side (3), it is characterized in that:

A. the spiral shell ridge (13) of six insulators (4) is large and small alternate equidistant arrangement;

B. the installing hole on the underframe side (3) is the hole slot of opening (2), the corresponding construction opening groove (14) of opening on another side.