CN211238082U

CN211238082U - Outdoor isolating switch

Info

Publication number: CN211238082U
Application number: CN201922487590.6U
Authority: CN
Inventors: 袁少伟; 舒国标; 漆志平
Original assignee: Chint Electric Co Ltd
Current assignee: Zhejiang Zhengtai Electric Technology Co.,Ltd.
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-11
Anticipated expiration: 2029-12-30

Abstract

The utility model provides an outdoor isolator, a serial communication port, including the isolator support, be equipped with a plurality of insulators on the isolator support, the lower extreme and the isolator leg joint of insulator, the upper end of insulator is passed through binding post and is connected with the isolation movable contact spring, it is connected with the one end of keeping apart the switch to keep apart the movable contact spring, the other end of keeping apart the switch is connected with keeping apart quiet electrically conductive piece, it is connected with the conducting rod to keep apart quiet electrically conductive piece, it is connected with insulating pull rod through the connector to keep apart the switch, the lower extreme and the isolation main shaft of insulating pull rod are connected, it is equipped with divide-shut brake spring to keep apart main shaft one end, the other end of keeping apart the main shaft is equipped with keeps apart the spacer pin, the both ends. The utility model has the advantages of for the isolator of indoor corresponding grade, this is novel will be simpler, miniaturized, and the modern design is more fit for keeping apart the implementation on the outdoor post moreover.

Description

Outdoor isolating switch

Technical Field

The utility model relates to an outdoor isolator, in particular to are arranged in exchanging 50Hz, the outdoor three-phase distribution system of 40.5kV, mainly with outdoor post on circuit breaker cooperation installation, as the usefulness of circuit isolation, belong to the electrical equipment field.

Background

In an ac 50Hz,40.5kV outdoor three-phase power distribution system. Rated currents of the outdoor pole-mounted circuit breaker and the isolating switch are both in the range of 630-1250A and below. As the market has developed, user application requirements have changed greatly. The outdoor three-phase power distribution system with the rated current of 630-1250A cannot completely meet the requirements of users. Therefore, distribution equipment such as outdoor circuit breakers with rated current of 1600-2000A appears in the market and is used for improving the capacity of an outdoor three-phase distribution system.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to design an outdoor isolating switch to enable the outdoor isolating switch to meet the rated current of 1600-2000A.

In order to solve the technical problem, the technical scheme of the utility model provides an outdoor isolator, a serial communication port, including the isolator support, be equipped with a plurality of insulators on the isolator support, the lower extreme and the isolator leg joint of insulator, the upper end of insulator is passed through binding post and is kept apart the movable contact spring and be connected, it is connected with the one end of keeping apart the switch to keep apart the movable contact spring, the other end of keeping apart the switch is connected with keeping apart quiet conductive piece, keep apart quiet conductive piece and be connected with the conducting rod, it passes through the connector and is connected with insulating pull rod to keep apart the switch, the lower extreme and the isolation main shaft of insulating pull rod are connected, it is equipped with the divide-shut brake spring to keep apart main shaft one end, the other end of keeping apart the main shaft is equipped with keeps apart the spacer pin, the both ends of.

Preferably, the disconnecting switch bracket is fixed on the back of the breaker shell through 4 fixing points.

Preferably, the isolating movable contact piece and the isolating static conductive piece are both provided with disc springs capable of providing contact pressure.

Preferably, the two sides of the isolated static conductive piece are provided with isolated static discharge pieces.

Preferably, the connecting pin crank arm is connected with the isolating connecting rod.

Preferably, the connecting pin isolation connecting lever is connected with the isolation interlocking lever through an isolation state connecting plate.

Therefore, the utility model discloses have for the isolator of indoor corresponding grade, this is novel to be simpler, miniaturized, and the modern design! Is more suitable for the isolated implementation on outdoor columns.

Drawings

Fig. 1 is a schematic structural diagram of an outdoor isolating switch of the present invention;

FIG. 2 is a schematic diagram of the connection of isolated static conductive members of an outdoor isolating switch;

FIG. 3 is a schematic view of the connection of the isolation static contact of an outdoor isolation switch;

FIG. 4 is a schematic view of the connection of the movable isolating contact piece of the outdoor isolating switch;

FIG. 5 is a schematic diagram of the connection between an isolation switch and an isolation static conductive member of an outdoor isolation switch;

fig. 6 is a schematic diagram of the switching on and off operation of an outdoor isolating switch.

1. An isolating switch bracket 2, a switching-on and switching-off spring 3, an insulator 4, a wiring terminal 5, an isolating movable contact piece 6, a disc spring 7, an insulating pull rod 8, an isolating disconnecting link 9, a connector 10, an isolating static conductive piece 12, an isolating static contact piece 13, a conductive rod 14, an isolating main shaft 15, an interlocking connecting arm 16, an isolating limiting pin 17, an isolating limiting connecting arm 18, an isolating state connecting plate 19, an isolating interlocking rod 20, an isolating state connecting rod 21, an outdoor circuit breaker

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 6: the disconnector frame 1 is fixed to the back of the circuit breaker housing 21 by 4 fixing points. The opening and closing spring 2 provides an accelerating function for isolating the opening and closing process and keeps the opening and closing state. The connecting terminal 4 and the isolating movable contact piece 5 are connected and fixed on the insulator 3 to form an isolating static end. And the disc spring 6 provides contact pressure for closing the isolating switch. The isolating switch is connected with the wire inlet and outlet end of the circuit breaker through a conducting rod 13. The isolated static conductive member 10 is connected with the conductive rod 13 through threads and then fastened through screws. An isolated static contact 12 is connected to the isolated static conductive member 10. The isolation disconnecting link 8 is connected with the isolation static conductive piece 10 through a shaft pin, and the shaft pin is used as a rotating shaft when the isolation disconnecting link is switched on and switched off, and the rotation flexibility is ensured. The disc spring 6 provides contact pressure for the isolating knife switch 8 and the isolating static contact 12 when closing. Isolation knife switch 8 the isolation knife switch operates the isolation switch through the connector 9 and the insulating pull rod 7 and the isolation spindle 14. The opening and closing positions are positioned through the isolation limiting pin 16 and the isolation limiting crank arm 17. The interlocking crank arm 15 and the isolation interlocking lever 19 realize the interlocking function with the circuit breaker. The action of the disconnecting switch is ensured to be only carried out under the opening state of the circuit breaker. The disconnect status link 18 and the disconnect status link 20 communicate the status information of the disconnector for the circuit breaker.

FIG. 2: the isolation static conductive member 10 is connected with the conductive rod 13 through a thread, so that the isolation static conductive member 10 is ensured to be in a vertical direction. The thread is used as a conductive lapping surface. And two holes at the lower part are communicated for fastening, so that the conductive area of the thread lapping surface is increased, and the resistance is reduced.

FIG. 3: the isolation disconnecting link 8 is installed on two pillars of the isolation static conductive component 10, and the round hole of the pillar is a base circle which rotates when the isolation disconnecting link 8 is opened and closed. The isolation static contact 12 is fixed on the installation surface of the isolation static conductive piece 10, and is required to be fastened reliably. The disc spring 6 increases the contact pressure for the isolation knife switch 8 and the isolation static contact 12 in a closing state.

FIG. 4: the top 5 is fixed on the connecting terminal 4 and is firmly fastened. Item 6 increases contact pressure for item 5 and item 8 in the closed state.

FIG. 5: 2 sets of isolation static contacts 12 are arranged on two sides of the top 10, and the isolation static contacts 12 are ensured to be opposite to the disconnecting link of the isolation disconnecting link 8. Two paths of disconnecting links are switched on and off, and the switching-on current-carrying capacity is guaranteed. The isolation switch 8 and the isolation static contact 12 are at the same potential. And the contact pressure provided by the disc spring 6 is gradually increased from 0 in the closing process. The contact pressure can only be effective when current passes through. The utility model discloses a let the contact spring embody its positive effect, do not have long-term effect and have acted on electrically conductive main part to its friction and damage.

FIG. 6: the main link of the on-off operation of the isolating switch is provided with an interlocking link and a state information transmission link.

Claims

1. The outdoor isolating switch is characterized by comprising an isolating switch support (1), a plurality of insulators (3) are arranged on the isolating switch support (1), the lower ends of the insulators (3) are connected with the isolating switch support (1), the upper ends of the insulators (3) are connected with an isolating movable contact piece (5) through wiring terminals (4), the isolating movable contact piece (5) is connected with one end of an isolating disconnecting link (8), the other end of the isolating disconnecting link (8) is connected with an isolating static conductive piece (10), the isolating static conductive piece (10) is connected with a conductive rod (13), the isolating disconnecting link (8) is connected with an insulating pull rod (7) through a connector (9), the lower end of the insulating pull rod (7) is connected with an isolating main shaft (14), a switching-on and switching-off spring (2) is arranged at one end of the isolating main shaft (14), an isolating limit pin (16) is arranged at the other end of the isolating main shaft (14), and two ends of the isolating limit pin (16) are respectively connected with a connecting pin connecting lever (15) and a connecting pin .

2. An outdoor disconnector according to claim 1, characterized in that the disconnector frame (1) is fixed to the back of the circuit-breaker casing (21) by means of 4 fixing points.

3. An outdoor disconnector according to claim 1, characterized in that said isolating movable contact piece (5) and isolating static conductive piece (10) are provided with disc springs (6) for providing contact pressure.

4. An outdoor disconnector according to claim 1, characterized in that isolating static conductive members (10) are provided with isolating static outgoing pieces (12) at both sides.

5. An outdoor disconnector according to claim 1, characterized in that the coupling pin lever (15) is connected to an isolating coupling rod (19).

6. An outdoor disconnector according to claim 1, characterized in that the coupling isolating crank arm (17) is connected to an isolating interlock lever (19) via an isolating status coupling plate (18).