CN112017905A - Quick-acting magnetic control vacuum circuit breaker - Google Patents
Quick-acting magnetic control vacuum circuit breaker Download PDFInfo
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- CN112017905A CN112017905A CN202011041796.7A CN202011041796A CN112017905A CN 112017905 A CN112017905 A CN 112017905A CN 202011041796 A CN202011041796 A CN 202011041796A CN 112017905 A CN112017905 A CN 112017905A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
- H01H33/52—Interlocking mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66223—Details relating to the sealing of vacuum switch housings
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- Gas-Insulated Switchgears (AREA)
Abstract
The invention designs a quick-acting magnetic control vacuum circuit breaker, which comprises an isolating switch assembly, a solid-sealed pole assembly, a magnetic control mechanism and a box body assembly, wherein the isolating switch assembly is arranged on the box body; the isolating switch assembly comprises a movable blade, a fixed blade and an operating handle, and the operating handle is used for controlling the movable blade to move so that the movable blade is communicated with or disconnected from the fixed blade to realize switching-on or switching-off; the embedded pole component is used for realizing the transmission of the magnetic control mechanism and the isolating switch component; the magnetic control mechanism is used for driving the movable blade to move, so that the movable blade is communicated with or disconnected from the fixed blade to realize switching on or switching off; the magnetic control mechanism is arranged in the box body assembly, and the solid-sealed polar pole assembly is arranged at the upper part of the box body assembly. The embedded pole is miniaturized, a voltage sensor, a current sensor and a vacuum arc-extinguishing chamber are arranged in the embedded pole, and the embedded pole has comprehensive functions; the magnetic control operating mechanism is adopted, so that the power consumption is low, the brake opening speed is high, and the performance is reliable. The whole machine has small volume, light weight, low power consumption, convenient installation and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a quick-acting magnetic control vacuum circuit breaker.
Background
The 10kV distribution network vacuum circuit breaker on the market at present has various structural forms, mainly comprises 2 types of common box type and strut type, and an operating mechanism mainly comprises a spring operating mechanism, an electromagnetic operating mechanism and a permanent magnet operating mechanism. The vacuum circuit breaker adopting the spring mechanism has larger opening time which is generally more than 20 ms; the vacuum circuit breaker adopting a common electromagnetic operating mechanism or a permanent magnetic operating mechanism has large operating power consumption; with the increasing load of the power grid, the vacuum circuit breaker on the line is required to be capable of rapidly removing line faults on site, the influence of the line faults on equipment is reduced, and the fault power failure time is shortened; meanwhile, the circuit breaker is required to integrate a voltage sensor and a current sensor, and has the advantages of miniaturization design, light weight design, low power consumption of the whole machine, capacity of expanding and using a capacitor to obtain an energy source, capacity of measuring line loss, deep integration of primary and secondary equipment, convenience in maintenance and the like.
Part of manufacturers integrate the current sensor inside the pole, and integrate the voltage sensor outside the terminal; the high-voltage arms of the voltage sensor are mostly provided with thin-film capacitors, the temperature drift is high, the voltage sensor is easily influenced by the ambient temperature, the reliability is low, and the output precision is high at normal temperature; the current sensor uses a conventional silicon steel iron core, the output precision is low, but the saturation characteristic level is high, and the integrated design of measurement and protection is difficult to realize; the operating mechanism adopts a conventional monostable or bistable permanent magnet operating mechanism, and the operating power consumption is large. The whole volume is large, the weight is large, and the maintenance is relatively troublesome.
The existing strut-type circuit breaker mostly adopts a single-break structure and is externally provided with an integrated zero-sequence voltage sensor and a disconnecting switch, and the existing strut-type circuit breaker is complex in overall structure, large in size, heavy in weight, low in overall reliability and single in function.
Disclosure of Invention
The invention discloses a quick-acting magnetic control vacuum circuit breaker based on market demands, which adopts a strut type structural design and mainly comprises a solid-sealed polar pole, a box body, a magnetic control mechanism and a disconnecting switch assembly. The embedded pole is miniaturized in design, a voltage sensor, a current sensor and a vacuum arc-extinguishing chamber are arranged in the embedded pole, and the embedded pole is rich in functions; the mechanism adopts an advanced magnetic control operating mechanism, so that the power consumption is low, the brake opening speed is high, and the performance is reliable; can freely integrate the isolator subassembly, set up reliable interlocking structure between circuit breaker and the isolator, satisfy five design requirements of preventing. The whole machine has small volume, light weight, low power consumption, convenient installation and convenient maintenance.
In order to achieve the aim, the invention provides a quick-acting magnetic control vacuum circuit breaker, which comprises a disconnecting switch assembly, a solid-sealed pole assembly, a magnetic control mechanism and a box body assembly, wherein the isolating switch assembly is arranged on the box body;
the isolating switch assembly comprises a movable blade, a fixed blade, an isolating switch insulating pull rod and an operating handle, wherein the operating handle is used for controlling the isolating switch insulating pull rod to drive the movable blade to move, so that the movable blade is communicated with or disconnected from the fixed blade to realize the switching-on or switching-off of the isolating switch;
the embedded pole component is cast with an integrated arc extinguish chamber and voltage and current sensors and is used as a breaker core switching-off unit and a voltage and current signal acquisition unit;
the magnetic control mechanism is connected with the moving contact of the arc extinguish chamber through the insulating pull rod of the circuit breaker, and the moving iron core of the mechanism is driven to move by electrifying, exciting or demagnetizing the coil inside the magnetic control mechanism, so that the moving contact of the arc extinguish chamber is communicated with or disconnected from the fixed contact by driving the insulating pull rod of the circuit breaker, and the switching-on or switching-off operation of the circuit breaker is realized; under the switching-on state of the circuit breaker, the movable iron core and the static iron core of the magnetic control mechanism can be separated under the action of manually applied external force on the magnetic control mechanism, and the insulating pull rod of the circuit breaker is driven to disconnect the movable contact and the static contact of the arc extinguish chamber, so that the manual switching-off operation of the circuit breaker is realized;
the magnetic control mechanism is arranged in the box body assembly, the solid-sealed pole assembly is arranged on the upper portion of the box body assembly and used for supporting the solid-sealed pole assembly, protecting the internal transmission structure of the circuit breaker and displaying the opening and closing state of the circuit breaker.
Furthermore, the isolating switch assembly also comprises an insulating support, an isolating switch insulating pull rod and a base; the insulating support is used for supporting the static blade, and the isolating switch insulating pull rod is used for supporting the movable blade; the insulating pillar is fixed on the base, the operating handle is installed to the base, and the operating handle drives the insulating pull rod of the isolating switch to rotate the isolating switch moving blade through the isolating main shaft, so that the switching-off and switching-on operations of the isolating switch are realized.
Furthermore, the movable blade and the fixed blade are made of red copper, and the surfaces of the movable blade and the fixed blade are plated with silver and tin; the insulating support and the insulating pull rod of the isolating switch are composed of epoxy resin, silicon rubber and copper inserts, wherein the epoxy resin is arranged inside the insulating support and the surface of the insulating support is provided with the silicon rubber to form an umbrella skirt structure, and the two ends of the insulating support and the insulating pull rod of the isolating switch are provided with the copper inserts for bolt installation; the operating handle and the base are made of stainless steel or carbon steel.
Furthermore, the isolating switch assembly is connected with the box body assembly through a switch base, the box body assembly and the solid-sealed pole assembly are assembled and fastened through 4 mounting bolts of the magnetic control mechanism to form a circuit breaker module, an interlocking structure is arranged between the circuit breaker module and the isolating switch assembly, the isolating switch is prevented from being switched on and switched off when the circuit breaker is switched on, and the isolating switch is allowed to be switched on and switched off when the circuit breaker is switched off.
Furthermore, the solid-sealed polar pole assembly comprises an epoxy resin insulator, a vacuum arc-extinguishing chamber, a voltage/current sensor, an outlet terminal, a conductive rod, a flexible connection and an insulating pull rod;
the epoxy resin insulator is fixed to the box body assembly, and a voltage/current sensor, a vacuum arc-extinguishing chamber and a conducting rod are integrated in the box body assembly in a sealing mode;
the vacuum arc extinguish chamber is used for switching on or off load current and fault current generated by grounding fault or short-circuit fault of a broken line;
one end of the insulating pull rod is connected to the vacuum arc extinguish chamber, a moving contact of the arc extinguish chamber is connected to the conductive rod through flexible connection, and the other end of the insulating pull rod is connected to the magnetic control mechanism through the metal pull rod;
the voltage/current sensor is fixedly integrated on one side of the epoxy resin insulator, detects voltage or current flowing through the conducting rod, and is led out through the outlet terminal.
Furthermore, the inside of the insulating pull rod is made of carbon steel, and the outside of the insulating pull rod is wrapped by SMC insulating materials.
Furthermore, the outlet terminal is forged by a red copper material, and the surface of the outlet terminal is plated with silver or tin for being connected with the main loop lead of the overhead line.
Furthermore, a magnetic control mechanism is adopted, and a mechanism iron core is made of a memory alloy material.
Furthermore, the box body assembly is provided with an aviation socket, a power supply control loop pin is led out, and the mechanism is switched on or switched off by applying a switching-on power supply or a switching-off power supply to the magnetic control mechanism.
Furthermore, the box body assembly is also provided with a travel switch, an EVT compensation module, a split-joint pointer, an ETC compensation module, a grounding indication board, a handle and a lifting hook;
the travel switch is used for outputting a circuit breaker on-off position signal; the EVT compensation module is used for outputting a voltage signal; the ETC compensation module is used for outputting a current signal; the switching-on and switching-off pointer is used for indicating the switching-off and switching-on states of the breaker; the grounding indication board is used for indicating whether grounding is performed; the handle and the lifting hook are welded on two sides of the box body.
The technical scheme of the invention has the following beneficial technical effects:
(1) the invention discloses a quick-acting magnetic control vacuum circuit breaker based on market demands, which adopts a strut type structural design and mainly comprises a solid-sealed polar pole, a box body, a magnetic control mechanism and a disconnecting switch assembly. The embedded pole is miniaturized in design, a voltage sensor, a current sensor and a vacuum arc-extinguishing chamber are arranged in the embedded pole, and the embedded pole is rich in functions; the mechanism adopts an advanced magnetic control operating mechanism, so that the power consumption is low, the brake opening speed is high, and the performance is reliable; can freely integrate the isolator subassembly, set up reliable interlocking structure between circuit breaker and the isolator, satisfy five design requirements of preventing. The whole machine has small volume, light weight, low power consumption, convenient installation and convenient maintenance.
(2) The invention integrates the phase sequence-zero sequence integrated voltage sensor and the phase sequence-zero sequence integrated current sensor, realizes the integrated design and application of voltage and current measurement and protection, improves the measurement precision and the measurement range of the voltage and the current, and enriches the functions of the circuit breaker body; the integrated low-power-consumption magnetic control operating mechanism realizes the quick switching-off function of the circuit breaker and prolongs the operating life of the circuit breaker.
(3) The circuit breaker is small in structure, and solves the problems of large overall size, heavy weight, difficulty in installation and operation and maintenance of the traditional circuit breaker;
drawings
Fig. 1 is a front view of a quick-acting type magnetically controlled vacuum circuit breaker.
Fig. 2 is a right side view of the quick-acting type magnetically controlled vacuum circuit breaker.
Fig. 3 is an electrical schematic diagram of a quick-acting magnetic control vacuum circuit breaker.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention relates to a quick-acting magnetic control vacuum circuit breaker, which mainly comprises a solid-sealed pole component, a magnetic control mechanism, a box body component and an isolating switch component. As shown in fig. 1 and fig. 2, the embedded pole assembly is composed of an epoxy resin insulator 1, a vacuum arc-extinguishing chamber 2, a voltage/current sensor 3, an outlet terminal 4, a conductive rod 5, a flexible connection 6, an insulating pull rod 7 and the like. The epoxy resin insulator 1 is used as a main body insulation structure of the pole and plays a role in insulating the phase of an outdoor main loop and the ground; the vacuum arc extinguish chamber 2 is used as a core on-off unit of the switch and is used for on-off of short circuit or on-off of load current and disconnection of fault current generated by line ground fault or short circuit fault; in the voltage/current sensor 3, a voltage sensor adopts a ceramic capacitor, and a current sensor adopts an LPCT (low voltage current transformer), so that high-precision acquisition of voltage and current signals is realized; the outlet terminal 4 is mainly forged by red copper material, has silver-plated surface and is used for connecting with the main loop lead of the overhead line; the conducting rod 5 is forged by red copper material, and forms a main loop conducting structure of the solid-sealed polar pole with the flexible connection 6 and the vacuum arc-extinguishing chamber 2; 7 the insulating pull rod is composed of carbon steel and SMC insulating materials and is used for transmission connection and insulation between the mechanism and the arc extinguish chamber.
The magnetic control mechanism 9 is a magnetic control mechanism, the iron core is made of a novel memory alloy material, and the magnetic control mechanism has the characteristics of high excitation efficiency, high demagnetization temperature, stable performance, small dispersity and the like, and is a core component for realizing the quick-break performance of the circuit breaker. The magnetic control mechanism 9 is connected with the moving contact of the arc extinguish chamber through an insulating pull rod, and the moving iron core of the mechanism is driven to move by electrifying, exciting or demagnetizing an internal coil of the magnetic control mechanism, so that the moving contact of the arc extinguish chamber is communicated or disconnected with the static contact 27 by driving the insulating pull rod of the circuit breaker, and the switching-on or switching-off operation of the circuit breaker is realized; meanwhile, under the switching-on state of the circuit breaker, an external force is manually exerted on the mechanism to separate the movable iron core 30 and the static iron core 29 of the magnetic control mechanism, and the insulating pull rod of the circuit breaker is driven to disconnect the movable contact 28 and the static contact 27 of the arc extinguish chamber, so that the manual switching-off operation of the circuit breaker is realized;
the box body component consists of a box body 8, an aviation socket 10, a brake separating handle 19, a grounding indicator 25 and a lifting handle 26. The box body 8 can be formed by welding carbon steel metal plates or integrally casting an aluminum die, the aviation socket 10 is made of aluminum alloy or copper alloy and the like, is connected with the box body 8 through bolts and is mainly used as an electrical connection interface of primary and secondary equipment; the opening handle 19 and the box body 8 are made of the same material and are connected with the opening main shaft 20 through a driving shaft, so that the manual opening function of the circuit breaker can be realized; the grounding indication board 25 is fixedly connected with the box body through a bolt to play a role of grounding indication; the lifting handle 26 is welded with the two sides of the box body, is consistent with the material of the box body, and is used for manually carrying or lifting the circuit breaker. The box body is also provided with a travel switch 21, an EVT compensation module 22, a split-joint pointer 23 and an ETC compensation module 24; the travel switch 21 is used for outputting a circuit breaker on-off position signal; the EVT compensation module 22 is used to output a voltage signal; the ETC compensation module 24 is used for outputting a current signal; and the switching-on and switching-off pointer 23 is used for indicating the switching-on and switching-off states of the circuit breaker. Further, the device also comprises an opening reset spring 18 which is used for driving the opening handle to reset after manual opening.
The isolating switch component consists of a movable blade 11, a fixed blade 12, an insulating support 13, an isolating switch insulating pull rod 14, an operating handle 15 and a base 16; the movable blade 11 and the fixed blade 12 are mainly communicated by red copper materials, silver-plated and tin-plated on the surfaces, and are connected with an arc extinguish chamber to form a conductive main loop structure of the whole circuit breaker; the insulating support 13 and the isolating switch insulating pull rod 14 are composed of epoxy resin, silicon rubber and copper inserts, and mainly play roles in isolating switch supporting, driving switch opening and closing and switch-on and switch-off to ground insulating, the copper inserts at two ends are used for bolt installation, the middle epoxy resin is used as a main insulating material, mechanical strength is enhanced, and an umbrella skirt structure is constructed by silicon rubber on the surface to play roles in insulating, dirt preventing and dust preventing. The operating handle 15 and the base 16 are made of stainless steel or carbon steel, and the operating handle 15 is used for driving the moving blade to move, so that the moving blade is communicated with or disconnected from the static blade to realize switching-on or switching-off of the isolating switch; the base serves as a structural support for the entire disconnector. The isolation switch assembly is connected with the box body assembly through a switch base 17, the box body assembly and the solid-sealed pole assembly are assembled and fastened through a magnetic control mechanism to form a circuit breaker module, an interlocking structure is arranged between the circuit breaker module and the isolation switch assembly, and when the circuit breaker mechanism is switched on, an interlocking main shaft is synchronously driven to rotate to drive an interlocking crank arm to drive an interlocking rod to limit the isolation switch main shaft to rotate, so that the isolation switch is prevented from being switched off; the limit of the interlocking rod is released when the mechanism is switched off, and the isolating switch can be switched on and off freely at the moment, so that the requirement that the circuit breaker and the isolating switch are mutually interlocked is met.
As can be seen from the structural diagrams of fig. 1 and fig. 2, the circuit breaker has compact overall structural design, and the miniaturized design and application of the embedded pole structure are realized through reasonable insulation structural design and material model selection; the miniaturized application through novel magnetic control mechanism can further reduce box structure volume, and the phase interval design is 240mm simultaneously, is far less than conventional strut type circuit breaker 340 mm's phase interval requirement. The circuit breaker is at the inside voltage sensor that has integrateed of solid utmost point post, has realized voltage measurement sampling unit integration and switch body, and external electromagnetic type PT then only need adopt single winding output like this, uses as power PT, can further reduce the volume, reduces material cost and electromagnetic resonance risk.
The switch body integrates a phase sequence-zero sequence integrated voltage sensor and a phase sequence-zero sequence integrated current sensor, the phase sequence-zero sequence integrated voltage sensor can simultaneously meet phase sequence voltage sampling (0.5 level) and zero sequence voltage sampling (3P level), the phase sequence-zero sequence integrated current sensor can simultaneously meet phase sequence current sampling (0.5s level) and zero sequence circuit sampling (1 level), the output precision is high, the measurement range is wide, the application requirement can be reliably met within the range of 1% -120% of rated value, and meanwhile, the current sensor meets the protection precision requirement of 10P 10.
The working principle and the working process of the quick-acting magnetic control vacuum circuit breaker are as follows:
the electrical schematic diagram of the switching device, see fig. 3, defines two pins "7-" and "8 +" in the 26-core socket of the body as the pins of the mechanism power control loop:
electric switching-on operation: applying an operating power supply by using a matched terminal or an external power supply module according to '7-' and '8 +', switching on a switch, and outputting a closing signal;
electric brake opening operation: and applying an operating power supply by using a matched terminal or an external power supply module according to the 7 plus and the 8 plus, switching off the switch, and outputting a switch-off signal.
And (3) manual brake opening operation: the external force is manually applied to the opening handle of the switch body to pull open the movable iron core and the static iron core of the mechanism, the switch is opened, and an opening signal is output.
In summary, the present invention provides a fast-acting magnetic control vacuum circuit breaker, which includes a disconnecting switch assembly, a sealed pole assembly, a magnetic control mechanism and a box assembly; the isolating switch assembly comprises a movable blade, a fixed blade and an operating handle, and the operating handle is used for controlling the movable blade to move so that the movable blade is communicated with or disconnected from the fixed blade to realize switching-on or switching-off; the embedded pole component is used for realizing the transmission of the magnetic control mechanism and the isolating switch component; the magnetic control mechanism is used for driving the movable blade to move, so that the movable blade is communicated with or disconnected from the fixed blade to realize switching on or switching off; the magnetic control mechanism is arranged in the box body assembly, and the solid-sealed polar pole assembly is arranged at the upper part of the box body assembly. The embedded pole is miniaturized, a voltage sensor, a current sensor and a vacuum arc-extinguishing chamber are arranged in the embedded pole, and the embedded pole has comprehensive functions; the magnetic control operating mechanism is adopted, so that the power consumption is low, the brake opening speed is high, and the performance is reliable. The whole machine has small volume, light weight, low power consumption, convenient installation and convenient maintenance.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A quick-acting magnetic control vacuum circuit breaker is characterized by comprising an isolating switch assembly, a solid-sealed pole assembly, a magnetic control mechanism and a box body assembly;
the isolating switch assembly comprises a movable blade, a fixed blade, an isolating switch insulating pull rod and an operating handle, wherein the operating handle is used for controlling the isolating switch insulating pull rod to drive the movable blade to move, so that the movable blade is communicated with or disconnected from the fixed blade to realize the switching-on or switching-off of the isolating switch;
the embedded pole component is cast with an integrated arc extinguish chamber and voltage and current sensors and is used as a breaker core switching-off unit and a voltage and current signal acquisition unit;
the magnetic control mechanism is connected with the moving contact of the arc extinguish chamber through the insulating pull rod of the circuit breaker, and the moving iron core of the mechanism is driven to move by electrifying, exciting or demagnetizing the coil inside the magnetic control mechanism, so that the moving contact of the arc extinguish chamber is communicated with or disconnected from the fixed contact by driving the insulating pull rod of the circuit breaker, and the switching-on or switching-off operation of the circuit breaker is realized; under the switching-on state of the circuit breaker, the movable iron core and the static iron core of the magnetic control mechanism can be separated under the action of manually applied external force on the magnetic control mechanism, and the insulating pull rod of the circuit breaker is driven to disconnect the movable contact and the static contact of the arc extinguish chamber, so that the manual switching-off operation of the circuit breaker is realized;
the magnetic control mechanism is arranged in the box body assembly, the solid-sealed pole assembly is arranged on the upper portion of the box body assembly and used for supporting the solid-sealed pole assembly, protecting the internal transmission structure of the circuit breaker and displaying the opening and closing state of the circuit breaker.
2. The quick acting magnetically controlled vacuum circuit breaker according to claim 1, wherein the disconnector assembly further comprises an insulating support, a disconnector insulating pull rod and a base; the insulating support is used for supporting the static blade, and the isolating switch insulating pull rod is used for supporting the movable blade; the insulating pillar is fixed on the base, the operating handle is installed to the base, and the operating handle drives the insulating pull rod of the isolating switch to rotate the isolating switch moving blade through the isolating main shaft, so that the switching-off and switching-on operations of the isolating switch are realized.
3. The fast-acting magnetic control vacuum circuit breaker according to claim 2, wherein the moving blade and the stationary blade are made of red copper, and the surfaces thereof are plated with silver and tin; the insulating support and the insulating pull rod of the isolating switch are composed of epoxy resin, silicon rubber and copper inserts, wherein the epoxy resin is arranged inside the insulating support and the surface of the insulating support is provided with the silicon rubber to form an umbrella skirt structure, and the two ends of the insulating support and the insulating pull rod of the isolating switch are provided with the copper inserts for bolt installation; the operating handle and the base are made of stainless steel or carbon steel.
4. The fast-moving type magnetic control vacuum circuit breaker according to claim 2, wherein the isolation switch assembly is connected with the box body assembly through a switch base, the box body assembly and the solid-sealed pole assembly are assembled and fastened through 4 mounting bolts of the magnetic control mechanism to form a circuit breaker module, and an interlocking structure is arranged between the circuit breaker module and the isolation switch assembly to prevent the isolation switch from being operated in an opening and closing manner when the circuit breaker is switched on and to allow the isolation switch to be operated in the opening and closing manner when the circuit breaker is switched off.
5. The fast-acting magnetic control vacuum circuit breaker according to claim 4, wherein the embedded pole assembly comprises an epoxy resin insulator, a vacuum interrupter, a voltage/current sensor, an outlet terminal, a conductive rod, a flexible connection and an insulating pull rod;
the epoxy resin insulator is fixed to the box body assembly, and a vacuum arc extinguish chamber, a voltage/current sensor and a conducting rod are integrated in the box body assembly in a sealing mode;
the vacuum arc extinguish chamber is used for switching on or off load current and fault current generated by grounding fault or short-circuit fault of a broken line;
one end of an insulating pull rod is connected to the vacuum arc extinguish chamber, a moving contact of the arc extinguish chamber is connected to the conductive rod through flexible connection, and the other end of the insulating pull rod is connected to the magnetic control mechanism through a metal pull rod;
the voltage/current sensor is fixedly integrated on one side of the epoxy resin insulator, detects voltage or current flowing through the conducting rod, and is led out through the outlet terminal.
6. The fast acting magnetically controlled vacuum circuit breaker according to claim 5, wherein the insulating pull rod is made of carbon steel and coated with SMC insulating material.
7. The fast acting magnetic controlled vacuum circuit breaker according to claim 5, characterized in that the outlet terminals are forged of red copper, plated with silver or tin on the surface, for connection with the main circuit conductors of the overhead line.
8. A fast-acting magnetically controlled vacuum circuit breaker according to claim 5, characterized in that a magnetically controlled mechanism is used, the core of which is made of a memory alloy material.
9. The quick-acting magnetic control vacuum circuit breaker according to claim 1 or 2, wherein the box assembly is provided with an aviation socket, a power control loop pin is led out, and the mechanism is switched on or off by applying a switching-on power supply or a switching-off power supply to the magnetic control mechanism.
10. The quick-acting type magnetic control vacuum circuit breaker according to claim 1 or 2, characterized in that the box body assembly is further provided with a travel switch, an EVT compensation module, a separation and combination pointer, an ETC compensation module, a grounding indication board, a handle and a lifting hook;
the travel switch is used for outputting a circuit breaker on-off position signal; the EVT compensation module is used for outputting a voltage signal; the ETC compensation module is used for outputting a current signal; the switching-on and switching-off pointer is used for indicating the switching-off and switching-on states of the breaker; the grounding indication board is used for indicating whether grounding is performed; the handle and the lifting hook are welded on two sides of the box body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041796.7A CN112017905A (en) | 2020-09-28 | 2020-09-28 | Quick-acting magnetic control vacuum circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041796.7A CN112017905A (en) | 2020-09-28 | 2020-09-28 | Quick-acting magnetic control vacuum circuit breaker |
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| CN112017905A true CN112017905A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011041796.7A Pending CN112017905A (en) | 2020-09-28 | 2020-09-28 | Quick-acting magnetic control vacuum circuit breaker |
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| CN (1) | CN112017905A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113936964A (en) * | 2021-11-10 | 2022-01-14 | 珠海许继电气有限公司 | Full-automatic assembling system and method for movable cutter assembly of molded case circuit breaker |
| CN114038706A (en) * | 2021-11-10 | 2022-02-11 | 南京海兴电网技术有限公司 | Intelligent isolation type quick circuit breaker |
| CN116525327A (en) * | 2023-05-06 | 2023-08-01 | 保定市冀中电力设备有限责任公司 | Secondary fusion on-column circuit breaker with protection type isolating switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113936964A (en) * | 2021-11-10 | 2022-01-14 | 珠海许继电气有限公司 | Full-automatic assembling system and method for movable cutter assembly of molded case circuit breaker |
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| CN114038706B (en) * | 2021-11-10 | 2024-06-11 | 南京海兴电网技术有限公司 | Intelligent isolation type quick breaker |
| CN116525327A (en) * | 2023-05-06 | 2023-08-01 | 保定市冀中电力设备有限责任公司 | Secondary fusion on-column circuit breaker with protection type isolating switch |
| CN116525327B (en) * | 2023-05-06 | 2023-10-20 | 保定市冀中电力设备有限责任公司 | Secondary fusion on-column circuit breaker with protection type isolating switch |
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