CN204835352U - Circuit breaker air chamber and have two feeder cabinets of keeping apart of this circuit breaker air chamber - Google Patents

Abstract

The utility model relates to a circuit breaker gas chamber and a double-isolation feeder cabinet with the circuit breaker gas chamber. A direct-acting isolating switch is arranged on the right side of a solid-sealed pole column along the up and down direction inside the box body of the circuit breaker gas chamber. The three-position isolating switch includes a conductor, a static contact conductively connected to the bus bar of each row of sockets, a moving contact, and a screw mechanism fixedly connected to the moving contact to realize the three functions of main circuit conduction, isolation and grounding. The three-station isolating switch and the bus three-station isolating switch set on the bus jointly play a double isolation role. The projection of the solid-sealed pole to the right is located on the isolating switch. The height space of the pole and the bottom socket is solidly sealed, instead of reserving a space for installing a disconnector in the height direction of the box body as in the prior art, thereby reducing the height of the air chamber of the circuit breaker and realizing Possibility to install a disconnect switch on the line side.

Description

Circuit breaker gas chamber and double isolation feeder cabinet with the circuit breaker gas chamber

technical field

The utility model relates to a circuit breaker air chamber and a double-isolation feeder cabinet with the circuit breaker air chamber.

Background technique

With the continuous development of switch technology, miniaturized and intelligent switch equipment is more and more favored by users. In recent years, various switch manufacturers have also taken miniaturization and intelligent switches as their development direction. Under the guidance of this development direction, a new switchgear, that is, gas-insulated closed switchgear, came out. The core components of the switchgear are sealed in the gas box, and the insulation performance of the equipment is guaranteed by insulating gas. Therefore, the requirements for the air chamber are mainly reflected in reliable operation, good air tightness, low leakage rate, small deformation of the box, good stability, and convenient installation and debugging. The utility model patent of Chinese patent document CN102447228B provides a high-voltage and high-current dry compressed air insulated metal-enclosed switchgear, including a cabinet shell and an air box. Switches, solid-sealed poles, inlet-line inner cone connection sockets, and outlet-line inner-cone connection sockets, the three-position isolating switch is arranged at intervals up and down with the solid-sealed poles, incoming line inner cone connection sockets, and outlet inner cone connection sockets, resulting in Due to the high height of the air box, it cannot be applied to feeder cabinets that have a requirement for the height of the air box.

Utility model content

The utility model provides a circuit breaker air chamber which solves the problem of high box height in the prior art due to the arrangement of the isolating switch and the solid-sealed pole, the inner cone connection socket of the incoming line and the inner cone connection socket of the outgoing line. At the same time, the purpose of the utility model is to provide a feeder cabinet with the air chamber of the circuit breaker.

The utility model adopts the following technical scheme: the air chamber of the circuit breaker includes a box body, a direct-acting isolating switch arranged inside the box body, and a solid-sealed pole arranged along the left and right directions suspended on the left side wall of the box body, An arc extinguishing chamber is arranged inside the sealed pole, and the direct-acting isolating switch is arranged on the right side of the solid-sealed pole along the vertical direction, and the projection to the right of the solid-sealed pole is located at the direct-acting isolating switch superior.

The upper part of the box body is provided with a bus coupler electrically connected to the front end outlet seat of the embedded pole, and the rear end outlet seat of the embedded pole is electrically connected to the conductor of the isolating switch. At least one row of socket groups, each row of socket groups includes at least one socket, the sockets in each row are conductively connected through a bus bar, and the right end of the bus bar is conductively connected with the static contact of the isolating switch.

At least one of the sockets in each row of socket groups is provided with a charging sensor.

A first insulator for supporting the upper end of the isolating switch is arranged on the inner wall of the top plate of the box along the vertical direction, and a second insulator for supporting the static contact of the isolating switch is arranged on the right inner wall of the box along the left and right directions.

The outside of the bottom of the box is provided with a transmission rod extending in the left and right directions and a reversing bevel gear that is drivingly matched with the driving rod. .

The feeder cabinet includes a circuit breaker air chamber, a circuit breaker operating mechanism and an isolating switch operating mechanism located on the same side of the circuit breaker air chamber. The solid-sealed poles suspended on the left side wall of the box are arranged in the left and right direction, the interior of the solid-sealed poles is provided with an arc extinguishing chamber, and the direct-acting isolating switch is arranged at the top and bottom of the solid-sealed poles On the right, the projection to the right of the solid-sealed pole is located on the direct-acting isolating switch.

The upper part of the box body is provided with a bus coupler electrically connected to the front end outlet seat of the embedded pole, and the rear end outlet seat of the embedded pole is electrically connected to the conductor of the isolating switch. At least one row of socket groups, each row of socket groups includes at least one socket, the sockets in each row are conductively connected through a bus bar, and the right end of the bus bar is conductively connected with the static contact of the isolating switch.

At least one of the sockets in each row of socket groups is provided with a charging sensor.

A first insulator for supporting the upper end of the isolating switch is arranged on the inner wall of the top plate of the box along the vertical direction, and a second insulator for supporting the static contact of the isolating switch is arranged on the right inner wall of the box along the left and right directions.

The outside of the bottom of the box is provided with a transmission rod extending in the left and right directions and a reversing bevel gear that is drivingly matched with the driving rod. .

Compared with the prior art, the beneficial effect of the utility model is that the direct-acting isolating switch is arranged on the right side of the solid-sealed pole along the up and down direction inside the box body of the air chamber of the circuit breaker, and the three-position isolating switch Including the conductor conductively connected to the static end of the arc extinguishing chamber, the static contact conductively connected to the bus bar of each row of sockets, the moving contact and the fixed connection with the moving contact and controlling the moving contact up and down to realize the conduction of the main circuit The screw mechanism with three functions of isolation and grounding, the three-position isolating switch and the busbar three-position isolating switch set on the busbar jointly play a double isolation role, and the projection of the solid-sealed pole to the right is located in the isolation On the switch, the isolating switch is arranged in this way, which effectively utilizes the height space of the solid-sealed pole and the bottom socket, instead of reserving a space for installing the isolating switch in the height direction inside the box as in the prior art, thereby reducing The height of the air chamber of the circuit breaker is reduced, and the possibility of installing an isolating switch on the line side is realized.

Description of drawings

Fig. 1 is a schematic structural view of a circuit breaker air chamber in an embodiment of a double-isolated feeder cabinet of the present invention;

FIG. 2 is a perspective view of FIG. 1 .

Detailed ways

An embodiment of a double-isolated feeder cabinet is shown in Figures 1 and 2, including a circuit breaker air chamber, which includes a box body 1, a vacuum circuit breaker 24, and a three-position isolating switch 23 disposed inside the box body The vacuum circuit breaker 24 includes a circuit breaker operating mechanism 2 arranged on the outer wall of the front side of the box and three suspended poles 4 with one end respectively arranged on the inner side wall of the front side of the box. The circuit breaker The operating mechanism 2 is set on the outer wall of the front side of the box through the mounting plate 3, and each of the embedded poles 4 includes a front outlet seat 5, a rear outlet seat 7, and a vacuum arc extinguisher arranged inside the embedded pole 4 The static end of the vacuum interrupter is fixedly connected to the rear outlet seat 7, the moving end of the vacuum interrupter is fixedly connected to the front outlet seat 5, and the upper part of the box body 1 is provided with a conductive connection with the front outlet seat 5. Bus coupler 6, the upper end of the circuit breaker air chamber is provided with a bus air chamber, and the outer side of the bus coupler 6 is conductively connected with a bus three-position isolating switch arranged inside the bus air chamber to control the conduction state of the bus. The bus three-position isolating switch It cooperates with the three-position isolating switch 23 inside the air chamber of the circuit breaker to play the role of double isolation. Of course, in other embodiments, the vacuum interrupter can also be replaced by a sulfur hexafluoride circuit breaker, and the three-position isolation can also be a two-position isolation switch that does not include a grounding electrode.

Inside the box body 1, three three-position isolating switches 23 are arranged at intervals along the front and rear directions extending in the up-down direction on the right side of the three solid-sealed poles 4, and each of the three-position isolating switches 23 includes a conductor 9 , the static contact 10, the moving contact 12, the grounding pole 14 and the screw mechanism 13 fixedly connected with the moving contact 12, the conductor 9 is conductively connected with the rear end outlet seat 7 of the solid-sealed pole 4, and the bottom plate of the box body 1 Three rows of inner cone socket groups are provided, and each row of inner cone socket groups includes four inner cone sockets 17 arranged at intervals in the front and back direction, and the four inner cone sockets of each row are conductively connected by a bus bar 18, and the four inner cone sockets of each row are electrically connected. One of the three inner cone sockets is an inner cone socket 19 equipped with a live sensor, which can output signals to an external connection detection device. The detection device can display the operating status of the functional units inside the gas chamber of the circuit breaker in real time, and can effectively prevent misuse. , the static contact 10 is conductively connected with the bus bar 18, the static contact 10 is embedded with a moving contact 12, and the bottom of the moving contact 12 is provided with a screw mechanism 13, and the screw mechanism 13 can drive the moving contact The head 12 reciprocates up and down to realize the three functions of connecting, isolating and grounding the main circuit. The inner wall of the top plate of the box body 1 is provided with a first insulator 8 for supporting the upper end of the isolating switch along the vertical direction, and the second insulator 8 for supporting the static contact 10 of the isolating switch is arranged on the inner wall of the right side of the box body 1 along the left and right direction. insulator 11.

The box body 1 is welded by stainless steel plates, and the supporting first insulator 8 and the second insulator 11 are installed on the reinforcing ribs at the corresponding positions on the inner wall of the box body 1. The use of the reinforcing ribs can prevent the first 1. The second insulator is directly fixed on the box body 1 and the sealing performance is not good, and it is more convenient to fix the insulator. Of course, in other embodiments, the first insulator 8 and the second insulator 11 can also be directly fixed on the box body. On the body 1, a sealing plate is provided on the outside of the box body 1 corresponding to the first and second insulators. A sealing plate 20 is arranged on the outer surface of the rear side wall of the box body 1, and a vent hole is designed on the sealing plate 20. A flange 22 is arranged on the sealing plate, and an explosion-proof membrane 21 is installed on the flange 22. When the air pressure rises above a certain value, the internal pressure of the box 1 and the gas inside the box 1 can be released through the vent hole and the explosion-proof membrane 21, so as to ensure the safety of operators and products and improve the safety protection performance of the equipment.

An isolating switch operating mechanism is also provided on the outer wall of the front side of the box body 1, and a transmission rod 16 extending in the left and right direction and connected to the isolating switch operating mechanism and a reversing switch engaged with the transmission rod 16 are arranged below the box body 1. The bevel gear 15, on which the reversing bevel gear 15 is driven, is equipped with a screw mechanism 13 that is fixedly connected with the isolating switch movable contact 12. Of course, in other embodiments, the bevel gear and the screw mechanism can also be replaced by worm gears.

When the device is in operation, the external cable is connected to the inner cone socket 17, the external main busbar is connected to the bus coupler 6, the bevel gear transmission mechanism 15 is connected to the input end of the transmission rod 16 and the screw mechanism 13 respectively, and the screw mechanism 13 through the transmission rod 16 through the bevel gear 15 to turn and drive the screw mechanism 13 to drive the moving contact 12 to reciprocate along the axis of the static contact 10, and finally realize the three functions of bus connection, isolation and grounding. The operating mechanism completes the opening and closing operation of the vacuum circuit breaker 24 by connecting the insulating pull rod sealed inside the air box with the moving end of the vacuum interrupter in the solid-sealed pole 4, and operates with the busbar three-position isolating switch in the busbar air chamber. The institutions jointly realize the double isolation function.

The embodiment of the circuit breaker gas chamber is the same as that of the circuit breaker gas chamber in the above-mentioned embodiments of the double isolated feeder cabinet, and will not be repeated here.

Claims (10)

1. circuit breaker air chamber, comprise casing, be arranged at the direct-operated isolating switch of box house and one end and be suspended in the pole arranged in left-right direction on casing left side wall, described pole inside is provided with arc control device, it is characterized in that: described direct-operated isolating switch is arranged in the right of pole along the vertical direction, the projection to the right of described pole is positioned on direct-operated isolating switch.

2. circuit breaker air chamber according to claim 1, it is characterized in that: described casing top is provided with to conduct electricity the mother device be connected with the front end wire outlet seat of pole, the rear end wire outlet seat of described pole conducts electricity with the conductor of isolating switch and is connected, described box bottom is provided with at least one plug socket group, every plug socket group comprises at least one socket, socket on described often row is connected by a bus conduction, and the right-hand member of described bus conducts electricity with the fixed contact of isolating switch and is connected.

3. circuit breaker air chamber according to claim 2, is characterized in that: have at least in the socket in described every plug socket group on a socket and be provided with electrified sensor.

4. circuit breaker air chamber according to claim 1, it is characterized in that: described roof box inwall being provided with along the vertical direction the first insulator for supporting isolating switch upper end, on the right side of described casing, inwall being provided with in left-right direction the second insulator of the fixed contact for supporting isolating switch.

5. circuit breaker air chamber according to claim 1, it is characterized in that: the bottom outside of described casing is provided with the drive link extended in left-right direction and the commutation bevel gear coordinated with drive link transmission, described commutation bevel gear upper driving is combined with the screw body be connected with isolating switch moving contact.

6. feeder cabinet, comprise circuit breaker air chamber and the circuit breaker operation mechanism and the isolator operating mechanism that are positioned at circuit breaker air chamber homonymy, described circuit breaker air chamber comprises casing, be arranged at the direct-operated isolating switch of box house and one end is suspended in the pole arranged in left-right direction on casing left side wall, described pole inside is provided with arc control device, it is characterized in that: described direct-operated isolating switch is arranged in the right of pole along the vertical direction, the projection to the right of described pole is positioned on direct-operated isolating switch.

7. feeder cabinet according to claim 6, it is characterized in that: described casing top is provided with to conduct electricity the mother device be connected with the front end wire outlet seat of pole, the rear end wire outlet seat of described pole conducts electricity with the conductor of isolating switch and is connected, described box bottom is provided with at least one plug socket group, every plug socket group comprises at least one socket, socket on described often row is connected by a bus conduction, and the right-hand member of described bus conducts electricity with the fixed contact of isolating switch and is connected.

8. feeder cabinet according to claim 7, is characterized in that: have at least in the socket in described every plug socket group on a socket and be provided with electrified sensor.

9. feeder cabinet according to claim 6, it is characterized in that: described roof box inwall being provided with along the vertical direction the first insulator for supporting isolating switch upper end, on the right side of described casing, inwall being provided with in left-right direction the second insulator of the fixed contact for supporting isolating switch.

10. feeder cabinet according to claim 6, it is characterized in that: the bottom outside of described casing is provided with the drive link extended in left-right direction and the commutation bevel gear coordinated with drive link transmission, described commutation bevel gear upper driving is combined with the screw body be connected with isolating switch moving contact.