CN202736819U

CN202736819U - Outdoor AC high-tension disconnecting switch

Info

Publication number: CN202736819U
Application number: CN 201220433833
Authority: CN
Inventors: 朱济伟; 林时华; 黎国勇; 黄秋金
Original assignee: GUANGXI HEXIE ELECTRIC POWER TECHNOLOGY Co Ltd
Current assignee: GUANGXI HEXIE ELECTRIC POWER TECHNOLOGY Co Ltd
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-02-13
Anticipated expiration: 2022-08-29

Abstract

The utility model discloses an outdoor AC high-tension disconnecting switch which comprises a mounting pedestal (1), a movable contact seat (2) and a static contact seat (12). The movable contact seat (2) and the static contact seat (12) are disposed on the mounting pedestal (1). The movable contact seat (2) is provided with an upper contact (4) and a conductive fork (5). The static contact seat (12) is provided with a lower contact (10). A switch blade (7) is connected between the movable contact seat (2) and the static contact seat (12). One end of the switch blade (7) is movably clamped on the lower contact (10) via a screw (9), and the other end of the switch blade (7) is equipped with an operation draw ring (6) and is embedded on the upper contact (4). The lower contact (10) is of a one-piece structure. The lower contact (10) with the one-piece structure is adopted and a diversion copper sheet is thickened, so that the diversion capability of the disconnecting switch is greatly enhanced and a product can be applied to a high current line. Moreover, a dish-shaped spring is employed, so that the occupation space is minimized under a prerequisite that fastening force is guaranteed. The outdoor AC high-tension disconnecting switch is economical, and is high in safety and long in service life.

Description

The outdoor AC high-voltage isolating switch

Technical field

The utility model relates to a kind of high-voltage electrical equipment, particularly a kind of outdoor AC high-voltage isolating switch.

Background technology

Overhead distribution system, the safe fracture that provides Maintenance and Repair to use are provided the outdoor AC high-voltage isolating switch of existing identical electric pressure.Because visible cut-off point is arranged intuitively, and when cut-offfing instrument with deflection formula load and use, can play the effect of the little load current of disjunction, create safe operational environment for maintenance circuit and service equipment, be used widely.But in electric line, the alternating-current high-voltage isolation switch that generally uses at present, because lower contact adopts split-type structural, the water conservancy diversion copper coin is thiner, secondly blade of knife switch, lower contact, lower terminal block are independent split type, have formed the many places breakpoint, cause contact easily to generate heat, temperature rise too high useful life that has a strong impact on product, the shortcomings such as difficulty of product overall package have been increased simultaneously.Because the problem of temperature rise is difficult to be applied to than in the heavy current circuit.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiencies in the prior art, provides that a kind of flow conductivity is strong, easily assembled, the outdoor AC high-voltage isolating switch of long service life.

The utility model is achieved through the following technical solutions:

A kind of outdoor AC high-voltage isolating switch, comprise mounting seat and be located at moving contact seat and static contact seat on the mounting seat, moving contact seat is provided with upper contact head and conductive prong, static contact seat is provided with lower contact, be connected with blade of knife switch between described moving contact seat and the static contact seat, blade of knife switch one end is installed on the lower contact by screw is rotating, and the other end is provided with the operation draw ring and embedding is sandwiched in upper contact head, and described lower contact is the integral type structure.

As further improvement, the above lower contact is the U-shaped structure of integral type.Lower contact thickness is increased, saved time contact supporting on the basis that keeps intensity.

As further improving, be crimped with disk spring between the above screw and the blade of knife switch.

The utility model can be applicable to the high pressure of 12kV.

Compared with prior art, the beneficial effects of the utility model are:

(1) the lower contact of integral structure, its water conservancy diversion copper sheet thickens, and has increased substantially the flow conductivity of isolating switch, and product can be applied to than in the heavy current circuit;

(2) the lower contact of integral structure has reduced breakpoint, so that temperature rise reduces, has prolonged the useful life of product; And easy for installation, reduced the difficulty that switch is assembled, improved production efficiency.

(3) adopt disk spring to replace original helical spring, under the prerequisite that guarantees fastening force, not only reduced taking up room, be used in combination conveniently, and economical, safe, long service life.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is right view of the present utility model;

Fig. 3 is vertical view of the present utility model;

Fig. 4 is structure of contact terminal schematic diagram under the integral type of the present utility model;

Fig. 5 is disk-shape spring structure schematic diagram of the present utility model;

Fig. 6 is Fig. 5 disk spring end view;

Fig. 7 is existing split type outdoor AC high-voltage isolating switch right view;

Fig. 8 is existing split type outdoor AC high-voltage isolating switch vertical view;

Fig. 9 is the split type lower structure of contact terminal schematic diagram of existing outdoor AC high-voltage isolating switch.

Reference numeral:

The 1-mounting seat, the 2-moving contact seat, the 3-connection bolt, the 4-upper contact head, the 5-conductive prong, 6-operates draw ring, 7-blade of knife switch, 8-spacer pin, 9-screw, contact under the 10-, 11-disk spring, 12-static contact seat, contact supporting under the 13-, the split type lower contact of 14-.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified, but protection range of the present utility model is not limited only to embodiment.

Embodiment:

Fig. 7 ~ Fig. 9 is the outdoor AC high-voltage isolating switch of prior art, its lower contact comprises lower contact supporting 13 and split type lower contact 14, and the water conservancy diversion copper sheet of split type lower contact 14 is thinner, and flow conductivity is lower, and the increase of breakpoint causes temperature rise to improve, and life of product shortens.

As improvement, such as Fig. 1 ~ shown in Figure 6, a kind of outdoor AC high-voltage isolating switch, comprise mounting seat 1 and be located at moving contact seat 2 and static contact seat 12 on the mounting seat 1, moving contact seat 2 is provided with upper contact head 4 and conductive prong 5, and static contact seat 12 is provided with lower contact 10, be connected with blade of knife switch 7 between moving contact seat 2 and the static contact seat 12, blade of knife switch 7 one ends are by screw 9 rotating being installed on the lower contact 10, and the other end is provided with operation draw ring 6 and embedding is sandwiched in upper contact head 4, and described lower contact 10 is the integral type structure.

Lower contact 10 after the improvement saves lower contact supporting 13, and its water conservancy diversion copper sheet thickens, and has increased substantially the flow conductivity of isolating switch, and product can be applied to than in the heavy current circuit; Reduce breakpoint, so that temperature rise reduces, prolonged the useful life of product; And easy for installation, reduced the difficulty that switch is assembled, improved production efficiency.

Crimp spring after the improvement adopts disk spring to replace original helical spring, under the prerequisite that guarantees fastening force, has not only reduced taking up room, be used in combination conveniently, and economical, safe, long service life.

Claims

1. outdoor AC high-voltage isolating switch, comprise mounting seat (1) and be located at moving contact seat (2) and static contact seat (12) on the mounting seat (1), moving contact seat (2) is provided with upper contact head (4) and conductive prong (5), static contact seat (12) is provided with lower contact (10), be connected with blade of knife switch (7) between described moving contact seat (2) and the static contact seat (12), blade of knife switch (7) one ends are installed on the lower contact (10) by screw (9) is rotating, the other end is provided with operation draw ring (6) and embedding is sandwiched in upper contact head (4), it is characterized in that: described lower contact (10) is the integral type structure.

2. outdoor AC high-voltage isolating switch according to claim 1 is characterized in that: described lower contact (10) is the U-shaped structure of integral type.

3. outdoor AC high-voltage isolating switch according to claim 1 and 2 is characterized in that: be crimped with disk spring (11) between described screw (9) and the blade of knife switch (7).