CN115020132A - Interlocking device of circuit breaker and isolating switch and outdoor pole switch - Google Patents

Abstract

The invention provides an interlocking device of a circuit breaker and a disconnecting switch and an outdoor column switch, wherein the interlocking device of the circuit breaker and the disconnecting switch comprises a circuit breaker operating mechanism, a circuit breaker transmission main shaft, an isolation rotating shaft, an isolation interlocking guide device and a limiting guide pin shaft, wherein the circuit breaker transmission main shaft and the isolation rotating shaft are rotatably arranged, and the circuit breaker transmission main shaft is also linked with the operating mechanism; keep apart and be provided with in the pivot and keep apart the spacing connecting lever of output connecting lever and isolation interlocking, be provided with input connecting lever and isolation interlocking drive connecting lever on the circuit breaker transmission main shaft, keep apart interlocking guider and include the deflector, the deflector has the rectangular hole of direction, spacing guide pin axle is fixed to be set up and wears to locate the rectangular downthehole of direction, keep apart interlocking drive connecting lever and connect the first end of deflector, the second end of deflector corresponds keep apart the spacing connecting lever of interlocking. The interlocking of the circuit breaker and the isolating switch can be realized.

Description

Interlocking device of circuit breaker and isolating switch and outdoor pole switch

Technical Field

The invention relates to the field of high-voltage electrical distribution switch equipment, in particular to an interlocking device of a circuit breaker and a disconnecting switch and an outdoor pole switch with the interlocking device of the circuit breaker and the disconnecting switch.

Background

The vacuum circuit breaker on the outdoor post of present strut type also can be equipped with isolator. In the prior art, the vacuum circuit breaker and the isolating switch lack interlocking and run independently, and the maintenance and installation are controlled by operation and maintenance personnel subjectively; the field maintenance, the overhaul and the installation of the power distribution switch cause great safety risks.

Disclosure of Invention

Therefore, the invention provides an interlocking device of a circuit breaker and a disconnecting switch and an outdoor pole switch with the interlocking device of the circuit breaker and the disconnecting switch. An interlocking mechanism is arranged between the transmission main shaft of the circuit breaker and the isolation rotating shaft so as to realize the interlocking of the vacuum circuit breaker and the isolation switch.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

an interlocking device of a circuit breaker and an isolating switch comprises a circuit breaker operating mechanism, a circuit breaker transmission main shaft, an isolating rotating shaft, an isolating interlocking guide device and a limiting guide pin shaft, wherein the circuit breaker transmission main shaft and the isolating rotating shaft are rotatably arranged, and the circuit breaker transmission main shaft is also linked with the circuit breaker operating mechanism; the isolation interlocking device comprises an isolation rotating shaft, a circuit breaker transmission main shaft and an isolation interlocking device, wherein the isolation rotating shaft is provided with an isolation output connecting lever and an isolation interlocking limit connecting lever, the circuit breaker transmission main shaft is provided with an input connecting lever and an isolation interlocking drive connecting lever, the isolation interlocking guide device comprises a guide plate, the guide plate is provided with a guide strip hole, a limit guide pin shaft is fixedly arranged and penetrates through the guide strip hole, the isolation interlocking drive connecting lever is connected with a first end of the guide plate, and a second end of the guide plate corresponds to the isolation interlocking limit connecting lever; when the circuit breaker transmission main shaft performs switching-on rotation or switching-off rotation, the guide plate is driven to be close to or far away from the isolation rotating shaft.

Further, keep apart interlocking guider still includes reset spring, the deflector still has the rectangular hole of installation, keep apart interlocking drive connecting lever through mobilizable the connecting in the rectangular hole of installation of spacing pin, reset spring assembles in the rectangular downthehole of installation, and its one end butt is on the deflector, and other end butt is on spacing pin.

Furthermore, an energy storage maintaining crank arm linked with a transmission main shaft of the circuit breaker and an isolation interlocking limiting plate linked with an isolation rotating shaft are arranged in the circuit breaker operating mechanism, and the isolation interlocking limiting plate is staggered with the energy storage maintaining crank arm when being positioned at a brake separating position and a brake closing position; and the isolation interlocking limiting plate is positioned on a closing track of the energy storage keeping connecting lever at a switching position where the switching position is switched between a switching-off position and a switching-on position.

Furthermore, keep apart the rotatable setting of interlocking limiting plate, be provided with the spacing connecting lever of drive in the isolation pivot, the spacing connecting lever of drive forms the transmission through a connecting rod and isolation interlocking limiting plate and is connected.

Furthermore, an arc-shaped limiting hole is formed in the driving limiting connecting lever, and a limiting pin shaft penetrates through the arc-shaped limiting hole.

An outdoor pole-mounted switch comprises an operation box and a breaker pole, wherein a vacuum arc extinguish chamber and a disconnecting switch are arranged in the breaker pole, and an interlocking device of the breaker and the disconnecting switch is arranged in the operation box; the input connecting lever of the circuit breaker transmission main shaft is connected with a circuit breaker insulation pull rod of the vacuum arc extinguish chamber, and the isolation output connecting lever of the isolation rotating shaft is connected with an isolation insulation pull rod of the isolation switch.

Furthermore, the circuit breaker pole comprises an insulating shell, and a primary incoming line contact arm, a vacuum arc extinguish chamber, an isolation upper contact arm, an isolation lower contact arm and a primary outgoing line contact arm which are fixedly sealed on the insulating shell; the insulation shell is also provided with a breaker cavity, a sensor cavity and an isolating switch cavity, a breaker insulation pull rod connected with the moving end of the vacuum arc-extinguishing chamber is assembled in the breaker cavity, the primary incoming line contact arm is in electric contact with the moving end of the vacuum arc-extinguishing chamber through flexible connection, the static end of the vacuum arc-extinguishing chamber is in electric contact with the isolating upper contact arm, and a sensor is arranged in the sensor cavity; the isolating switch is assembled in an isolating switch cavity, and the isolating switch cavity is provided with an upper cavity positioned between an isolating upper contact arm and an isolating lower contact arm and a lower cavity positioned below the isolating lower contact arm; the upper chamber has a transparent viewing window.

Furthermore, the isolating switch comprises an isolating contact arm, an insulating guide part and an isolating insulating pull rod, wherein the isolating contact arm is assembled on the isolating lower contact arm in a sliding mode, the insulating guide part is connected to the lower end of the isolating contact arm, and the isolating insulating pull rod is connected to the insulating guide part; the insulating guide part is provided with an insulating cover extending downwards, and the shape of the insulating cover is matched with that of the lower chamber.

Furthermore, the insulating shell comprises a main shell, a silica gel shell and a transparent cover, and the main shell fixedly seals the primary incoming line contact arm, the vacuum arc-extinguishing chamber, the isolation upper contact arm, the isolation lower contact arm and the primary outgoing line contact arm; the transparent cover is assembled between the isolation upper contact arm and the isolation lower contact arm, and the silica gel shell covers the outer surface of the main shell.

Further, the sensor cavity is located between the circuit breaker cavity and the isolation switch cavity.

Through the technical scheme provided by the invention, the method has the following beneficial effects:

when the circuit breaker transmission main shaft performs switching-on rotation or switching-off rotation, the guide plate is driven to be close to or far away from the isolation rotating shaft, namely, when the circuit breaker transmission main shaft performs switching-on rotation, the guide plate is driven to be close to the isolation rotating shaft, so that the guide plate is positioned on a swing track of the isolation interlocking limit connecting lever, the isolation interlocking limit connecting lever can be limited to swing, namely, the isolation rotating shaft cannot perform switching-on rotation or switching-off rotation; namely, when the vacuum circuit breaker is in a closing state, the isolating switch can not act;

when the breaker transmission main shaft performs opening rotation, the guide plate is driven to be far away from the isolation rotating shaft, so that the guide plate is separated from the swing track of the interlocking limit crank arm, and the isolation rotating shaft can normally rotate without being limited so as to control the opening and closing of the isolation switch;

so, set up interlocking device through the circuit breaker transmission main shaft at control circuit breaker divide-shut brake and the isolation pivot of control isolator divide-shut brake for form the interlocking between vacuum circuit breaker and the isolator, structural configuration is ingenious and simple.

Drawings

FIG. 1 is a first schematic structural diagram of an interlocking device of a circuit breaker and a disconnecting switch in an embodiment;

FIG. 2 is a second schematic structural diagram of an interlock device of the circuit breaker and the disconnector in the embodiment;

FIG. 3 is a third schematic structural view of an interlocking device of a circuit breaker and a disconnecting switch in the embodiment;

FIG. 4 is a schematic structural diagram of a transmission main shaft of the circuit breaker in the embodiment;

FIG. 5 is a schematic structural diagram of an isolation spindle according to an embodiment;

FIG. 6 is a first schematic view of a first interlocking structure in the first embodiment;

FIG. 7 is a second schematic view of a first interlocking structure in the embodiment;

FIG. 8 is a third schematic view of a first interlocking structure in the embodiment;

FIG. 9 is a schematic view of the isolation interlock guide of an embodiment;

FIG. 10 is a first schematic view of a second interlocking structure according to the embodiment;

FIG. 11 is a second interlocking configuration diagram of the embodiment;

FIG. 12 is a third schematic view of a second interlocking structure in the embodiment;

FIG. 13 is a schematic structural view of an outdoor pole top switch in an embodiment;

fig. 14 is a schematic structural view of a breaker pole in an embodiment;

fig. 15 is a schematic structural diagram of a breaker pole in another embodiment.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Specifically, for convenience of description, the opening position or the closing position of a certain component is described in this embodiment, and refers to a position of the component when a breaker or a disconnector linked with the component is in opening or closing. Taking a breaker transmission main shaft linked with the breaker as an example, when the breaker is in an opening state, the position of the breaker transmission main shaft is an opening position, and when the breaker is in a closing state, the position of the breaker transmission main shaft is a closing position.

The invention will now be further described with reference to the accompanying drawings and detailed description.

Example one

Referring to fig. 1 to 9, the present embodiment provides an interlock apparatus for a circuit breaker and a disconnecting switch, including a circuit breaker operating mechanism 120, a circuit breaker transmission main shaft 130, an isolation rotating shaft 140, an isolation interlock guiding device 170, and a limit guiding pin 175, where the circuit breaker transmission main shaft 130 and the isolation rotating shaft 140 are rotatably disposed, and the circuit breaker transmission main shaft 130 is further linked with the circuit breaker operating mechanism 120; namely, the circuit breaker transmission main shaft 130 realizes the switching-on rotation or the switching-off rotation through the circuit breaker operating mechanism 120. Specifically, the closing rotation is the rotation toward the closing position; the opening rotation is the rotation toward the opening position.

An isolation output crank arm 141 and an isolation interlocking limit crank arm 142 are arranged on the isolation rotating shaft 140, and an input crank arm 131 and an isolation interlocking driving crank arm 134 are arranged on the breaker transmission main shaft 130.

The isolating and interlocking guide device 170 includes a guide plate 171, the guide plate 171 has a guide elongated hole 172, and the limit guide pin 175 is fixed on the box body 10 (specifically, fixed on the rotating shaft support frame 113) and penetrates through the guide elongated hole 172, that is, the movable range of the guide plate 171 is the range of relative movement between the guide elongated hole 172 and the limit guide pin 175, and has a positioning function. The isolation interlock actuating crank 134 is connected to a first end of a guide plate 171, and a second end of the guide plate 171 corresponds to the isolation interlock limiting crank 142.

When the circuit breaker transmission main shaft 130 performs switching-on rotation or switching-off rotation, the guide plate 171 is driven to be close to or far away from the isolation rotating shaft 140, that is, when the circuit breaker transmission main shaft 130 performs switching-on rotation, the guide plate 171 is driven to be close to the isolation rotating shaft 140, so that the guide plate 171 is positioned on a swing track of the isolation interlocking limit connecting lever 142, and thus, the isolation interlocking limit connecting lever 142 can be limited from swinging, that is, the isolation rotating shaft 140 cannot perform switching-on rotation or switching-off rotation; in more detail, when the vacuum circuit breaker is in the closed state, the disconnecting switch cannot be operated, as shown in fig. 6 and 7. When the circuit breaker transmission main shaft 130 performs opening rotation, the guide plate 171 is driven to be away from the isolation rotating shaft 140, so that the guide plate 171 is separated from the swing track of the isolation interlocking limit crank arm 142, and the isolation rotating shaft 140 can normally rotate without being limited, so as to control the opening and closing of the isolation switch, as shown in fig. 8.

Further preferably, in order to avoid the guide plate 171 from rigidly striking the isolating interlocking limit lever 142 when the disconnector is still in motion in sudden operation of the circuit breaker (i.e. the isolating rotary shaft 140 also suddenly drives the circuit breaker drive main shaft 130 to rotate in rotation), in this embodiment, the isolating interlocking guide device 170 further includes a return spring 174, the guide plate 171 further has a mounting elongated hole 173, the isolating interlocking drive lever 134 is movably connected to the mounting elongated hole 173 through a limit pin, and the return spring 174 is assembled in the mounting elongated hole 173, and one end of the return spring abuts against the guide plate 171, and the other end of the return spring abuts against the limit pin. Due to the arrangement of the return spring 174, the guide plate 171 has a certain buffering effect, so that the rigid impact of the guide plate 171 on the isolation interlocking limit crank arm 142 can be effectively avoided, and after the isolation switch finishes operation (namely, the isolation rotating shaft 140 finishes rotation), the guide plate 171 automatically slides into a limit state under the action of the return spring 174.

Specifically, the interlock device for circuit breaker and disconnector is disposed in a box 110 (as shown in fig. 13) to form an operation box 100. More specifically, the breaker transmission main shaft 130 is further provided with a buffer impact crank arm 132 and a brake separating spring driving crank arm 133; one end of the opening spring 151 is connected with the box body 110, and the other end of the opening spring is connected with the opening spring driving crank arm 133; the oil damper 152 is disposed at an opposite side of the opening spring 151 and corresponds to the damping striking crank 132. When the breaker transmission main shaft 130 performs a closing rotation (i.e., rotates in a direction of a closing position), the shunt spring 151 stores energy in a compressed manner. In this embodiment, the circuit breaker transmission main shaft 130 rotates in the direction of the switching-on position when rotating counterclockwise; when the breaker transmission main shaft 130 rotates clockwise, it rotates toward the opening position.

Specifically, the circuit breaker operating mechanism 120 adopts an existing structure, for example, the structure includes an energy storage motor 121, an energy storage spring 122, a closing holding part and a tripping part, when the circuit breaker operating mechanism works, the energy storage motor 121 drives a circuit breaker transmission main shaft 130 to rotate so as to realize a closing action, and simultaneously, the energy storage spring 122 is compressed to perform compression energy storage; and the closing rotation of the breaker transmission main shaft 130 also compresses the switching spring 151 to store energy. The closing maintaining part limits the breaker transmission main shaft 130 rotating to the closing position to maintain the closing state; the trip portion is linked with the closing holding portion, and the limit of the closing holding portion is released by the trip operation of the trip portion, so that the breaker transmission main shaft 130 is rotated to open (i.e., rotated in the direction of the opening position).

The breaker transmission main shaft 130 is correspondingly provided with an opening spring 151 and an oil buffer 152, when the breaker transmission main shaft 130 is rotated to be closed, the opening spring 151 stores energy to provide a force for opening rotation, in this embodiment, the force for opening rotation of the breaker transmission main shaft 130 is provided by the opening spring 151 and the energy storage spring 122 together, and of course, in other embodiments, the force may be directly provided by the opening spring 151 without the structure of the energy storage spring 122.

When the breaker transmission main shaft 130 is in brake-off rotation, the oil buffer 152 is matched with the buffer impact crank arm 132 for buffering, so that the mechanical service life is long, and the structure is simple.

Further, in this embodiment, the box body 110 has a mechanism bottom plate 111, a rotating shaft support frame 113 and an oil buffer mounting frame 112 are fixed on the mechanism bottom plate 111, the circuit breaker operating mechanism 120 is fixed on the mechanism bottom plate 111, and the circuit breaker transmission main shaft 130 and the isolation rotating shaft 140 are both rotatably assembled on the circuit breaker operating mechanism 120 and the rotating shaft support frame 113; one end of the opening spring 151 is connected to the mechanism bottom plate 111 of the box body 110; the oil buffer 152 is fixed to the oil buffer mounting frame 112. Therefore, all the components are directly or indirectly assembled on the mechanism bottom plate 111, and only the mechanism bottom plate 111 needs to be reinforced, so that the stability is high; while also reducing the requirements of other side panels of the cabinet 110.

An oil buffer striker 1321 is mounted on the buffer striker crank arm 132. When the brake is opened, the breaker transmission main shaft 130 can more effectively separate the excess energy of the absorption and absorption operating mechanism by the oil buffer collision wheel 1321 on the buffer collision crank arm 132 colliding with the oil buffer 152.

Still be equipped with auxiliary switch 160 in the box 110, it is specific, auxiliary switch 160 assembles on pivot support frame 113, still be provided with auxiliary switch drive connecting lever 135 on the circuit breaker transmission main shaft 130, auxiliary switch drive connecting lever 135 and auxiliary switch 160 linkage. In this way, the switching operation can be indicated to the outside through the auxiliary switch 160.

As shown in fig. 13 and fig. 14, the embodiment further provides an outdoor pole-mounted switch, which includes an operation box 100 and a breaker pole 200, wherein a vacuum arc-extinguishing chamber 222 and a disconnector 230 are disposed in the breaker pole 200, the operation box is equipped with the above-mentioned interlocking device for the breaker and the disconnector, an input crank arm 131 of the breaker transmission main shaft 130 is connected to a breaker insulation pull bar 2221 of the vacuum arc-extinguishing chamber 222 (i.e., a vacuum breaker), and the breaker transmission main shaft 130 controls the opening and closing of the vacuum arc-extinguishing chamber 222; the isolation output crank arm 141 of the isolation rotating shaft 140 is connected with an isolation insulation pull rod 233 of the isolation switch 230; the isolation shaft 140 controls the on/off of the isolation switch 230.

Further, in this embodiment, the breaker pole 200 includes an insulating housing 210, and a primary incoming contact arm 221, a vacuum interrupter 222, an isolation upper contact arm 223, an isolation lower contact arm 224, and a primary outgoing contact arm 225, which are fixedly sealed on the insulating housing 210; the insulating housing 210 is further formed with a circuit breaker cavity 2101, a sensor cavity 2102 and a disconnector cavity 2103, the circuit breaker cavity 2101 is internally equipped with a circuit breaker insulating pull rod 2221 connected with the movable end of the vacuum arc-extinguishing chamber 222, and on/off control of the vacuum arc-extinguishing chamber 222 is realized by controlling the circuit breaker insulating pull rod 2221.

The first incoming line contact arm 221 is in electrical contact with the moving end of the vacuum arc-extinguishing chamber 222 through a flexible connection 227, the static end of the vacuum arc-extinguishing chamber 222 is in electrical contact with the isolation upper contact arm 223, specifically, the isolation connecting bar 228 is further fixedly sealed in the insulation housing 210, and the static end of the vacuum arc-extinguishing chamber 222 is in electrical contact with the isolation upper contact arm 223 through the isolation connecting bar 228. The isolated lower contact arm 224 is in electrical contact with a primary outlet contact arm 225.

A sensor (in this specific embodiment, an outlet side voltage sensor 242) is arranged in the sensor cavity 2102; the isolation switch cavity 2103 is equipped with an isolation switch 230, and the isolation switch cavity 2103 is provided with an upper chamber 21031 positioned between an isolation upper contact arm 223 and an isolation lower contact arm 224 and a lower chamber 21032 positioned below the isolation lower contact arm 224; the upper chamber 21031 has a transparent viewing window 2131.

Has the following beneficial effects:

1. the vacuum arc-extinguishing chamber 222 and the disconnector 230 are integrated in the same insulating housing 210, and have the functions of a circuit breaker and a disconnector, so that the structure is compact.

2. A sensor cavity 2102 is formed in the insulating housing 210, and is used for assembling a sensor, so that parameters of a conductive circuit can be sensed in real time, and the pole-mounted switch has an intelligent switch function.

3. The upper chamber 21031 of the isolating switch cavity 2103 is provided with a transparent observation window 2131, so that the on/off condition of the isolating switch 230 can be visually confirmed, and the field maintenance and overhaul are facilitated.

In conclusion, the multifunctional integration of miniaturization, intellectualization, visual isolation switch and full solid-sealed insulation of the charged body of the pole-mounted switch is realized.

Specifically, the insulating housing 210 further fixedly encloses a current sensor coil 226, and the current sensor coil 226 is sleeved outside the primary incoming line contact arm 221 and used for sensing incoming line current.

Further, the insulating housing 210 includes a main housing 211, a silicone housing 212, and a transparent cover 213, where the main housing 211 is integrally injection-molded by thermoplastic engineering plastics, and in this embodiment, is injection-molded by an epoxy resin APG. The main housing 211 fixedly seals the primary incoming line contact arm 221, the vacuum arc-extinguishing chamber 222, the isolation upper contact arm 223, the isolation lower contact arm 224 and the primary outgoing line contact arm 225; the transparent cover 213 is mounted between the upper contact arm 223 and the lower contact arm 224, and thus the transparent cover 213 is the transparent viewing window 2131. Silica gel shell 212 covers the surface of main casing body 211, and silica gel shell 212 plays further outdoor protection and insulating effect, more is applicable to the open air.

More specifically, the transparent observation window 2131 is tempered explosion-proof glass, that is, the transparent cover 213 is a tempered explosion-proof glass cover; the structure is stable. Of course, in other embodiments, the transparent viewing window 2131 may be made of other transparent and firm materials.

The isolating switch 230 comprises an isolating contact arm 231, an insulating guide 232 and an isolating insulating pull rod 233, wherein the isolating contact arm 231 is slidably assembled on the isolating lower contact arm 224, the insulating guide 232 is connected to the lower end of the isolating contact arm 231, and the isolating insulating pull rod 233 is connected to the insulating guide 232; the isolation contact arm 231 is driven to slide up and down by pulling the isolation insulation pull rod 233, and when the isolation contact arm 231 moves up to be connected with the isolation upper contact arm 223 and the isolation lower contact arm 224 at the same time, the isolation switch 230 is in a closed state, namely, a working state; when the isolation contact arm 231 moves down to be separated from the isolation upper contact arm 223, the isolation switch 230 is in an off state, i.e., an isolation state.

More specifically, in order to make the isolation contact arm 231 better electrically contact with the isolation upper contact arm 223 and the isolation lower contact arm 224, in this embodiment, the isolation upper contact arm 223 and the isolation lower contact arm 224 are both provided with a conductive spring contact finger 229, and are electrically contacted with the isolation contact arm 231 through the conductive spring contact finger 229.

More specifically, in this embodiment, the insulation guide 232 has an insulation cover 2321 extending downward, and the insulation cover 2321 plays a good role in isolating an arc, and can also effectively prevent a large amount of external air or dust from flowing into the upper chamber 21031. The shape of the insulating cover 2321 is matched with the lower chamber 21032, so that the insulating cover 2321 and the lower chamber 21032 can also play a role in guiding and matching, and the isolating contact arm 231 is not eccentric or displaced when moving up and down rapidly.

The breaker cavity 2101 is further internally provided with an incoming line side voltage sensor 241, the incoming line side voltage sensor 241 is in electrical contact with the primary incoming line contact arm 221, and the incoming line side voltage sensor 241 is used for acquiring power supply energy and voltage information of an incoming line side and outputting the power supply energy and voltage information to a control system subsequently so as to be monitored and judged by the control system.

The sensor cavity 2102 is located between the breaker cavity 2101 and the isolating switch cavity 2103, so that the distance between the vacuum arc extinguish chamber 222 and the isolating switch 230 is increased as much as possible, the insulating effect is better, and meanwhile, the subsequent assembling connection with an operating mechanism is facilitated.

The sensor assembled in the sensor cavity 2102 is an outlet side voltage sensor 242, and the outlet side voltage sensor 242 is in electrical contact with the isolated lower contact arm 224; the outlet side voltage sensor 242 is configured to collect power supply energy and voltage information of the outlet side, and subsequently output the power supply energy and voltage information to the control system for monitoring and judgment by the control system.

In this embodiment, the incoming line side voltage sensor 241 and the outgoing line side voltage sensor 242 are both electronic voltage sensors with a combination of high-voltage thick-film resistors and capacitors.

Of course, in other embodiments, other sensors may be used as the sensor assembled in the sensor cavity 2102, such as an incoming line electricity sensor 243 shown in fig. 15, where the incoming line electricity sensor 243 is in electrical contact with the primary incoming line contact arm 221; specifically, the incoming line electricity sensor 243 sequentially passes through the conductive block 251, the high-voltage lead 252 and the flexible connection 227 to achieve electrical contact with the primary incoming line contact arm 221. That is, the incoming line electricity sensor 243 is connected with the conductive block 251, the conductive block 251 is connected with the high-voltage lead 252, the high-voltage lead 252 is connected with the flexible connection 227, and the flexible connection 227 is connected with the primary incoming line contact arm 221.

The incoming line electricity-taking sensor 243 is arranged to provide electric energy for operation and data transmission of a control terminal of the switch device, and is an electricity-taking sensor for voltage division of a high-voltage ceramic capacitor and composed of a voltage division device and a transformer module.

Example two

The present embodiment provides an interlock device for a circuit breaker and a disconnector, which has substantially the same structure as the first embodiment, except that: with reference to fig. 10 to 12, on the basis of the first embodiment, a second interlocking structure is added, that is, an energy storage maintaining crank arm 123 linked with the breaker transmission main shaft 130 and an isolation interlocking limit plate 124 linked with the isolation rotating shaft 140 are disposed in the breaker operating mechanism 120.

Defining the position of the energy storage and holding connecting lever 123 as the switching-on position of the energy storage and holding connecting lever 123 when the vacuum circuit breaker is driven by the circuit breaker transmission main shaft 130 to switch on; when the breaker transmission main shaft 130 drives the vacuum breaker to open the brake, the position of the energy storage and holding crank arm 123 is the brake opening position of the energy storage and holding crank arm 123; when the isolation rotating shaft 140 drives the isolation switch to be switched on, the isolation interlocking limit plate 124 is located at the switching-on position of the isolation interlocking limit plate 124; when the isolation rotating shaft 140 drives the isolation switch to open, the isolation interlocking limiting plate 124 is located at the opening position of the isolation interlocking limiting plate 124.

The isolation interlocking limit plate 124 is staggered with the energy storage keeping crank arm 123 when in the opening position and the closing position; the isolation interlock limiting plate 124 is in the open position as in fig. 10, and the isolation interlock limiting plate 124 is in the closed position as in fig. 11; thus, when the disconnecting switch is switched on or switched off, the isolating and interlocking limit plate 124 does not block the action of the energy storage and retaining crank arm 123, that is, the vacuum circuit breaker can realize the switching on and off operation.

As shown in fig. 12, the switching position where the isolation interlock restriction plate 124 is switched between the open position and the closed position is located on the closing track of the energy storage maintaining lever 123. Namely, when the disconnecting switch is in the motion process of switching on and off switching, the isolating interlocking limit plate 124 is located on the switching-on track capable of keeping the connecting lever 123, and at the moment, the energy storage keeping connecting lever 123 cannot be switched from the switching-on position to the switching-off position, that is, the vacuum circuit breaker cannot perform the switching-on operation.

Therefore, the interlocking device of the circuit breaker and the disconnecting switch provided by the embodiment can realize the interlocking of the vacuum circuit breaker and the disconnecting switch. The safety is higher.

More specifically, the isolation interlocking limit plate 124 is rotatably disposed, the isolation rotating shaft 140 is provided with a driving limit crank arm 143, and the driving limit crank arm 143 is in transmission connection with the isolation interlocking limit plate 124 through a connecting rod 125. Therefore, the linkage arrangement of the isolation rotating shaft 140 and the isolation interlocking limit plate 124 is realized, and the structure is simple.

More specifically, an arc-shaped limiting hole 144 is formed in the driving limiting crank arm 143, and a limiting pin 145 penetrates through the arc-shaped limiting hole 144. Thus, the rotation limitation of the isolation rotating shaft 140 can be realized through the matching of the arc-shaped limiting hole 144 and the limiting pin 145.

The outdoor pole-mounted switch provided by the embodiment is substantially the same as the outdoor pole-mounted switch provided by the embodiment, and the difference is that: the interlocking device of the circuit breaker and the disconnecting switch provided by the embodiment is adopted.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a circuit breaker and isolator's interlock which characterized in that: the circuit breaker interlocking device comprises a circuit breaker operating mechanism, a circuit breaker transmission main shaft, an isolation rotating shaft, an isolation interlocking guide device and a limiting guide pin shaft, wherein the circuit breaker transmission main shaft and the isolation rotating shaft are rotatably arranged, and the circuit breaker transmission main shaft is also linked with the circuit breaker operating mechanism; the isolation interlocking device comprises an isolation rotating shaft, a circuit breaker transmission main shaft and an isolation interlocking device, wherein the isolation rotating shaft is provided with an isolation output connecting lever and an isolation interlocking limit connecting lever, the circuit breaker transmission main shaft is provided with an input connecting lever and an isolation interlocking drive connecting lever, the isolation interlocking guide device comprises a guide plate, the guide plate is provided with a guide strip hole, a limit guide pin shaft is fixedly arranged and penetrates through the guide strip hole, the isolation interlocking drive connecting lever is connected with a first end of the guide plate, and a second end of the guide plate corresponds to the isolation interlocking limit connecting lever; when the circuit breaker transmission main shaft performs switching-on rotation or switching-off rotation, the guide plate is driven to be close to or far away from the isolation rotating shaft.

2. The circuit breaker and disconnector interlock according to claim 1, characterized in that: keep apart interlocking guider still includes reset spring, the deflector still has the rectangular hole of installation, keep apart interlocking drive connecting lever through mobilizable connection in the rectangular hole of installation of spacing pin, reset spring assembles in the rectangular downthehole of installation, and its one end butt is on the deflector, and other end butt is on spacing pin.

3. The circuit breaker and disconnector interlock according to claim 1, characterized in that: the breaker operating mechanism is internally provided with an energy storage retaining crank arm linked with a breaker transmission main shaft and an isolation interlocking limiting plate linked with an isolation rotating shaft, and the isolation interlocking limiting plate is staggered with the energy storage retaining crank arm when being positioned at a brake opening position and a brake closing position; and the isolation interlocking limiting plate is positioned on a closing track of the energy storage keeping connecting lever at a switching position where the switching position is switched between a switching-off position and a switching-on position.

4. The circuit breaker and disconnector interlock of claim 3, wherein: keep apart interlocking limiting plate rotatable setting, be provided with the spacing connecting lever of drive on the isolation pivot, the spacing connecting lever of drive forms the transmission with keeping apart interlocking limiting plate through a connecting rod and is connected.

5. The circuit breaker and disconnector interlock according to claim 4, characterized in that: an arc-shaped limiting hole is formed in the driving limiting crank arm, and a limiting pin shaft penetrates through the arc-shaped limiting hole.

6. The utility model provides an outdoor column switch, includes control box and circuit breaker utmost point post, its characterized in that: a vacuum arc extinguish chamber and a disconnecting switch are arranged in the pole of the circuit breaker, and an interlocking device of the circuit breaker and the disconnecting switch according to any one of claims 1 to 5 is arranged in the operation box; the input connecting lever of the transmission main shaft of the circuit breaker is connected with the circuit breaker insulating pull rod of the vacuum arc extinguish chamber, and the isolation output connecting lever of the isolation rotating shaft is connected with the isolation insulating pull rod of the isolation switch.

7. The outdoor pole top switch of claim 6, wherein: the circuit breaker pole comprises an insulating shell, and a primary incoming line contact arm, a vacuum arc-extinguishing chamber, an isolation upper contact arm, an isolation lower contact arm and a primary outgoing line contact arm which are fixedly sealed on the insulating shell; the insulation shell is also provided with a breaker cavity, a sensor cavity and an isolating switch cavity, a breaker insulation pull rod connected with the moving end of the vacuum arc-extinguishing chamber is assembled in the breaker cavity, the primary incoming line contact arm is in electric contact with the moving end of the vacuum arc-extinguishing chamber through flexible connection, the static end of the vacuum arc-extinguishing chamber is in electric contact with the isolating upper contact arm, and a sensor is arranged in the sensor cavity; the isolating switch is assembled in an isolating switch cavity, and the isolating switch cavity is provided with an upper cavity positioned between an isolating upper contact arm and an isolating lower contact arm and a lower cavity positioned below the isolating lower contact arm; the upper chamber has a transparent viewing window.

8. The outdoor pole top switch of claim 7 wherein: the isolating switch comprises an isolating contact arm, an insulating guide part and an isolating insulating pull rod, wherein the isolating contact arm is assembled on the isolating lower contact arm in a sliding mode, the insulating guide part is connected to the lower end of the isolating contact arm, and the isolating insulating pull rod is connected to the insulating guide part; the insulating guide part is provided with an insulating cover extending downwards, and the shape of the insulating cover is matched with that of the lower chamber.

9. The outdoor pole top switch of claim 7 wherein: the insulating shell comprises a main shell, a silica gel shell and a transparent cover, and the main shell fixedly seals the primary incoming line contact arm, the vacuum arc-extinguishing chamber, the isolation upper contact arm, the isolation lower contact arm and the primary outgoing line contact arm; the translucent cover assembles on keeping apart and touches between the arm and keep apart down the arm, the silica gel shell covers in the surface of the main casing body.

10. The outdoor pole top switch of claim 7 wherein: the sensor cavity is located between the breaker cavity and the isolation switch cavity.

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