CN108847365A - Gas-filling cabinet vacuum circuit breaker special and three-station all-in-one machine - Google Patents

Abstract

The invention discloses a special vacuum circuit breaker and three-position switch integrated machine for an inflatable cabinet, which includes a vertical plate, a circuit breaker operating mechanism and an isolating switch operating mechanism installed on one side of the vertical plate, and installed on the other side of the vertical plate. A pole on one side and connected to the operating mechanism of the circuit breaker, an isolating switch installed on the other side of the vertical plate and connected to the operating mechanism of the isolating switch, and installed between the pole and the isolating switch contact arm, wherein the circuit breaker operating mechanism is linked with the pole. The present invention only needs to adjust and install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine outside the air box, and then install it inside the air box, so that the special vacuum circuit breaker for the air box and the inflatable cabinet and the three-position switch integrated machine It is completely separated and has no relationship with each other, which solves the long-standing industry problem, thereby reducing the impact of the gas box on the isolating switch, and ensuring that the isolating switch can still work normally when the gas box is deformed.

Description

Inflatable cabinet dedicated vacuum circuit breaker and three-position switch integrated machine

technical field

The invention relates to the field of circuit breaker manufacturing, in particular to a vacuum circuit breaker and three-position switch integrated machine dedicated to an inflatable cabinet.

Background technique

Vacuum circuit breaker is named for its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. The application is more popular. Vacuum circuit breaker is an indoor power distribution device in a 3-10kV, 50Hz three-phase AC system, which can be used for the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations, and is especially suitable for applications that require no oil and less In places where maintenance and frequent operations are used, circuit breakers can be configured in central cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment.

In the vacuum circuit breaker of the inflatable cabinet, the switches are scattered and installed inside the box. Due to the influence of air pressure and altitude, the box will be deformed to varying degrees, which will affect the transmission of the isolating switch.

Contents of the invention

The invention provides a special vacuum circuit breaker and three-position switch integrated machine for an inflatable cabinet to solve the above-mentioned technical problems existing in the prior art.

In order to solve the above technical problems, the present invention provides a special vacuum circuit breaker and three-position switch integrated machine for inflatable cabinets, including a vertical plate, a circuit breaker operating mechanism and an isolating switch operating mechanism installed on one side of the vertical plate, installed on the The pole column on the other side of the vertical plate and connected to the circuit breaker operating mechanism, the isolating switch installed on the other side of the vertical plate and connected to the isolating switch operating mechanism, and the pole column installed on the other side of the vertical plate and the isolating switch operating mechanism The contact arm between the isolating switches, wherein the circuit breaker operating mechanism is linked with the pole.

Preferably, the isolating switch includes: a grounding contact seat installed on the vertical plate, a three-way static contact seat installed in the middle of the pole, a working contact seat installed on the contact arm, an insulating pull rod and A moving conductive rod, wherein one end of the insulating pull rod is connected to the operating mechanism of the isolating switch, and the other end passes through the ground contact seat and the three-way static contact seat in sequence, and the moving conducting rod is controlled by the operating mechanism of the isolating switch. The drive moves on the insulating pull rod.

Preferably, the ground contact seat, the working contact seat and the three-way static contact seat are all provided with elastic contact blocks.

Preferably, the working contact seat is further provided with a connecting row, and the connecting row is integrally connected with the working contact seat.

Preferably, the pole includes: an insulating casing and a vacuum interrupter installed in the insulating casing, wherein, one end and the middle of the insulating casing are respectively provided with a first outlet end and a second outlet end, the The top of the vacuum interrupter is provided with a static outgoing line rod corresponding to the first outgoing line end, and the bottom of the vacuum interrupter is provided with a moving outgoing line rod corresponding to the second outgoing line end, wherein the first outgoing line end passes through the The contact arm is connected to the working contact seat, the second outlet end is connected to the three-way static contact seat through the moving outlet rod, and the vacuum interrupter is also operated with the circuit breaker through a linkage mechanism Institutional connections.

Preferably, there are three groups of the isolating switch and the pole.

Compared with the prior art, the present invention fixes the position of the isolating switch by setting the isolating switch on the pole, thereby integrating the vacuum circuit breaker and the isolating switch, and the isolating switch does not need to rely on the gas box during subsequent installation For installation, you only need to adjust and install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine outside the air box, and then install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine inside the air box, so that the air box It is completely separated from the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine, and has no relationship with each other, which solves the long-term industry problem, thereby reducing the influence of the gas box on the isolating switch, and ensuring that the isolating switch can still function when the gas box is deformed. normal work.

Description of drawings

Fig. 1 is a structural schematic diagram of a vacuum circuit breaker dedicated to an inflatable cabinet and a three-position switch integrated machine of the present invention;

Fig. 2 is a top view of the vacuum circuit breaker and three-position switch integrated machine dedicated to the inflatable cabinet of the present invention.

As shown in the figure: 10- vertical plate, 20- circuit breaker operating mechanism, 30- isolating switch operating mechanism, 40- pole, 41- insulating shell, 42- first outlet terminal, 43- second outlet terminal, 50- Isolating switch, 51-working contact seat, 52-three-way static contact seat, 53-working contact seat, 54-insulating rod, 55-moving conductive rod, 56-connecting row, 60-contact arm.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present invention are in simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

As shown in Figures 1 to 2, the present invention provides a vacuum circuit breaker and three-position switch integrated machine for inflatable cabinets, including a vertical plate 10, a circuit breaker operating mechanism 20 installed on one side of the vertical plate 10, and an isolating The switch operating mechanism 30 , the pole 40 installed on the other side of the vertical plate 10 and connected to the circuit breaker operating mechanism 20 , installed on the other side of the vertical plate 10 and connected to the isolating switch operating mechanism 30 The isolating switch 50 and the contact arm 60 installed between the pole 40 and the isolating switch 50 , wherein the circuit breaker operating mechanism 20 is linked with the pole 40 . Specifically, the isolating switch 50 plays the role of connecting and isolating the primary line and performing system grounding protection. By fixing the isolating switch 50 on the pole 40, the installation of the isolating switch 50 no longer needs to rely on the gas box, thereby The vacuum circuit breaker and the isolating switch 50 are fused together. In the subsequent installation, the isolating switch does not need to be installed on the air box. It is only necessary to adjust and install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine outside the air box. The special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine are installed inside the air box, so that the special vacuum circuit breaker for the air box and the inflatable cabinet and the three-position switch integrated machine are completely separated, and there is no relationship with each other, which solves the long-term troubled industry Difficulties, thereby reducing the impact of the gas box on the isolating switch, ensuring that the isolating switch 50 can still work normally when the gas box is deformed.

Please refer to FIG. 1 , the isolating switch 50 includes: a grounding contact seat 51 installed on the vertical plate 10, a three-way static contact seat 52 installed in the middle of the pole 40, and a three-way static contact seat 52 installed on the contact arm 60. The working contact seat 53, the insulating pull rod 54 and the moving conductive rod 55, wherein, one end of the insulating pull rod 54 is connected with the operating mechanism 30 of the isolating switch, and the other end passes through the ground contact seat 51 and the three-way static The contact seat 52 , the moving conductive rod 55 is driven by the isolating switch operating mechanism 30 to move on the insulating pull rod 54 . Specifically, the isolating switch operating mechanism 30 drives the rotation of the insulating pull rod 54, and then drives the moving conductive rod 55 on the insulating pull rod 54 to move, so that the moving conductive rod 55 and the working contact seat 53 or The ground contacts 51 make contact. It should be noted that the initial position of the moving conductive rod 55 is located in the three-way static contact seat 52 and will not break away from the three-way static contact seat 52, that is, the moving conductive rod 55 can be kept in contact with the three-way static contact seat 52 at any time. The three-way static contact seat 52 is in contact to maintain electrical connection.

Preferably, the ground contact 51 , the working contact 53 and the three-way static contact 52 are all provided with elastic contact blocks, which can enhance the conductivity of the moving conductive rod 55 .

As a preference, a connecting row 56 is also arranged on the working contact seat 53, and the connecting row 56 is integrally connected with the working contact seat 53, which can effectively improve the distribution of the power plant in the gas box and ensure that no field will be formed there. Several strong, conducive to flow.

Please refer to FIG. 1 , the pole 40 includes: an insulating shell 41 and a vacuum interrupter installed in the insulating shell 41, wherein one end and the middle of the insulating shell 41 are respectively provided with first outlets 42 and the second outlet end 43, the top of the vacuum interrupter is provided with a static outlet rod corresponding to the first outlet end 42, and the bottom of the vacuum interrupter is provided with a moving outlet rod corresponding to the second outlet end 43, Wherein, the first outlet end 42 is connected to the working contact seat 53 through the contact arm 60, and the second outlet end 43 is connected to the three-way static contact seat 52 through the moving outlet rod, and the The vacuum interrupter is also connected with the circuit breaker operating mechanism 20 through a link mechanism, so as to realize arc extinguishing operation.

Preferably, there are three groups of the isolating switch 50 and the pole 40 .

Continue referring to Fig. 1 to Fig. 2, the course of work of the present invention is:

When the vacuum circuit breaker is closed, the isolating switch operating mechanism 30 drives the moving conductive rod 55 to move through the insulating pull rod 54, so that the moving conductive rod 55 moves out from the three-way static contact seat 52 and connects with the working contact seat 53, forming The primary circuit supplies power to the power system;

The opening of the vacuum circuit breaker is opposite to the closing action. The isolating switch operating mechanism 30 drives the moving conductive rod 55 to move in the reverse direction through the insulating pull rod 54, so that the moving conductive rod 55 returns to the three-way static contact seat 52 to realize work. The contact seat 53 is isolated from the movable conductive rod 55, and the system is powered off;

The dynamic guide rod 55 is removed from the three-way static contact seat 52 and connected to the ground contact seat 51. At this time, the circuit breaker operating mechanism 20 is in electrical contact with the pole 40, and the vacuum circuit breaker is closed. The system is grounded to protect equipment and personal safety.

To sum up, the present invention fixes the position of the isolating switch 50 by setting the isolating switch 50 on the pole 40, thereby integrating the vacuum circuit breaker and the isolating switch 50 together, and the isolating switch 50 does not need Depending on the installation of the air box, it is only necessary to adjust and install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine outside the air box, and then install the special vacuum circuit breaker for the inflatable cabinet and the three-position switch integrated machine inside the air box. The special vacuum circuit breaker for the air box and the inflatable cabinet is completely separated from the three-position switch integrated machine, and has no relationship with each other. It can still work normally when the box is deformed.

Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (6)

1. A special vacuum circuit breaker and three-position switch integrated machine for inflatable cabinets, characterized in that it includes a vertical plate, a circuit breaker operating mechanism and an isolating switch operating mechanism installed on one side of the vertical plate, and installed on the vertical plate. The pole on the other side of the plate and connected to the operating mechanism of the circuit breaker, the disconnector installed on the other side of the vertical plate and connected to the operating mechanism of the isolating switch, and the pole connected to the disconnecting switch The contact arm between them, wherein the circuit breaker operating mechanism is linked with the pole. 2. The special vacuum circuit breaker and three-position switch integrated machine for inflatable cabinets according to claim 1, wherein the isolating switch includes: a grounding contact seat installed on the vertical plate, a grounding contact seat installed on the pole The three-way static contact seat in the middle of the column, the working contact seat installed on the contact arm, the insulating pull rod and the moving conductive rod, wherein, one end of the insulating pull rod is connected with the operating mechanism of the isolating switch, and the other end passes through the The grounding contact seat and the three-way static contact seat, the moving conductive rod is driven by the operating mechanism of the isolating switch to move on the insulating pull rod. 3. The vacuum circuit breaker and three-position switch integrated machine for inflatable cabinets according to claim 2, wherein elastic contact blocks are arranged in the ground contact seat, the working contact seat and the three-way static contact seat. 4. The high-altitude vacuum circuit breaker with isolation function according to claim 2, characterized in that, the working contact seat is further provided with a connecting row, and the connecting row is integrally connected with the working contact seat. 5. The high-altitude vacuum circuit breaker with isolation function according to claim 2, wherein the pole comprises: an insulating casing and a vacuum interrupter installed in the insulating casing, wherein the insulating casing One end and the middle part of the vacuum interrupter are respectively provided with a first outlet end and a second outlet end, the top of the vacuum interrupter is provided with a static outlet rod corresponding to the first outlet end, and the bottom of the vacuum interrupter is provided with a second The moving wire rod corresponding to the wire outlet end, wherein the first wire outlet end is connected to the working contact seat through the contact arm, and the second wire outlet end is connected to the three-way static contact seat through the moving wire outlet rod , and the vacuum interrupter is also connected to the circuit breaker operating mechanism through a linkage mechanism. 6. The high-altitude vacuum circuit breaker with isolation function according to claim 1, characterized in that there are three sets of isolation switches and poles.