CN117712910A - Gas-insulated metal-enclosed switchgear with emergency change-over switch - Google Patents

Gas-insulated metal-enclosed switchgear with emergency change-over switch Download PDF

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Publication number
CN117712910A
CN117712910A CN202410135253.3A CN202410135253A CN117712910A CN 117712910 A CN117712910 A CN 117712910A CN 202410135253 A CN202410135253 A CN 202410135253A CN 117712910 A CN117712910 A CN 117712910A
Authority
CN
China
Prior art keywords
main circuit
switch
contact
mounting plate
insulated metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202410135253.3A
Other languages
Chinese (zh)
Other versions
CN117712910B (en
Inventor
张寅�
胡平
仝健
薛燕
孙猛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHAANXI TONGLI ELECTRIC CO Ltd
Original Assignee
SHAANXI TONGLI ELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHAANXI TONGLI ELECTRIC CO Ltd filed Critical SHAANXI TONGLI ELECTRIC CO Ltd
Priority to CN202410135253.3A priority Critical patent/CN117712910B/en
Publication of CN117712910A publication Critical patent/CN117712910A/en
Application granted granted Critical
Publication of CN117712910B publication Critical patent/CN117712910B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

The invention discloses gas-insulated metal-enclosed switchgear with an emergency change-over switch, which belongs to the technical field of gas-insulated metal-enclosed switchgear and comprises a switchgear sealing box body, a main circuit connecting mechanism, a standby circuit connecting mechanism, a switch mechanism, a power mechanism and an instantaneous voltage detector, wherein the main circuit connecting mechanism, the standby circuit connecting mechanism, the switch mechanism, the power mechanism and the instantaneous voltage detector are arranged in the switchgear sealing box body.

Description

Gas-insulated metal-enclosed switchgear with emergency change-over switch
Technical Field
The invention relates to the technical field of gas-insulated metal-enclosed switchgear, in particular to gas-insulated metal-enclosed switchgear with an emergency change-over switch.
Background
The gas-insulated metal-enclosed switchgear is a metal-enclosed switchgear and a control device, at least a part of which uses a gas higher than atmospheric pressure as an insulating medium. GIS is the English abbreviation of gas-insulated totally-enclosed combined electrical apparatus. GIS consists of a breaker, a disconnecting switch, a grounding switch, a mutual inductor, a lightning arrester, a bus, a connecting piece, an outgoing terminal and the like, all of which are enclosed in a metal grounding shell, and SF with a certain pressure is filled in the metal grounding shell 6 Insulating gases, also known as SF 6 A totally-enclosed combined electrical appliance.
Due to SF 6 The leakage of gas, infiltration of outside moisture, existence of conductive impurities, influence of factors such as insulator ageing, can lead to GIS internal flashover fault, maintenance work is complicated, after the GIS is inside to break down, because the back-up circuit is not equipped with in the GIS, need to overhaul the GIS in a power failure after leading to the accident, work demand under the influence GIS emergency condition, simultaneously when overhaul the GIS is inside, need open the GIS and close the inside knife switch of GIS, the inside knife switch of GIS can rotate in opening and closing, traditional inside knife switch of GIS is straight sheet structure, knife switch rotation radius is big, the inside great space of reservation of needs of GIS is protectedThe rotation requirement of the knife switch in the GIS is proved, under the condition that a standby circuit is arranged in the GIS, the rotation radius of the knife switch is large, the rotation stroke is long, the circuit switching is slow, the tolerance of some power equipment to voltage reduction is very low, the power equipment is easy to fail under the condition that the circuit switching is slow, and the safety is influenced, so that the design of the gas-insulated metal-enclosed switchgear with the emergency switch is necessary.
Disclosure of Invention
The invention aims to provide gas-insulated metal-enclosed switchgear with an emergency change-over switch, so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the gas-insulated metal-enclosed switchgear with the emergency change-over switch comprises a switchgear sealing box body, a main circuit connecting mechanism, a standby circuit connecting mechanism, a switching mechanism, a power mechanism and an instantaneous voltage detector, wherein the main circuit connecting mechanism, the standby circuit connecting mechanism, the switching mechanism, the power mechanism and the instantaneous voltage detector are arranged in the switchgear sealing box body, the switching mechanism is arranged between the main circuit connecting mechanism connected with the main circuit and the standby circuit connecting mechanism connected with the standby circuit, the power mechanism is used for driving the switching mechanism to rotate and switch, the instantaneous voltage detector is used for detecting the instantaneous voltage on the main circuit communicated with the main circuit connecting mechanism, and when the detected instantaneous voltage exceeds a threshold value, the power mechanism drives the switching mechanism to rotate and switch from the main circuit connecting mechanism to the standby circuit connecting mechanism;
the main circuit connecting mechanism comprises an upper mounting plate connected with a main circuit, a main circuit connector is arranged on the upper mounting plate, the standby circuit connecting mechanism comprises a lower mounting plate connected with a standby circuit, the lower mounting plate is provided with a standby circuit connector, a support frame is arranged between the upper mounting plate and the lower mounting plate, and an insulating rotating shaft and a plurality of connecting gate seats are arranged in the middle of the support frame;
the switch mechanism is arranged on the support frame and comprises a contact assembly, the contact assembly comprises a plurality of groups of V-shaped contacts which are arranged side by side, the V-shaped contacts are formed by contact blades which are bent towards one side far away from the support frame and have obtuse angles after bending, two ends of each contact blade respectively correspond to the main circuit connector and the standby circuit connector, the connecting gate seat is opposite to one side of the support frame and corresponds to the V-shaped contacts one by one, the connecting gate seat is communicated with an outlet terminal arranged in a sealing box body of the switch device, the bending part of the middle part of each contact blade is fixedly sleeved on an insulating rotating shaft, two connecting contacts are symmetrically arranged at the bending part of the middle part of each contact blade, and a closing groove matched with each connecting contact is formed in the connecting gate seat;
the power mechanism comprises a protective shell arranged at one end of the insulating rotating shaft, a driving mechanism used for driving the insulating rotating shaft to rotate is arranged in the protective shell, and the driving mechanism is electrically connected with the instantaneous voltage detector.
In a further embodiment, the V-shaped contact forms an obtuse angle in the range of 140 ° -170 °.
In a further embodiment, two connection contacts are respectively adjacent to the sides of the connection gate seat facing the main circuit connector and the standby circuit connector, the closing slot is an arc slot structure taking the axis of the insulation rotating shaft as the center of a circle, a gate seat part connected with the wire outlet terminal is arranged in the middle of the arc slot structure, arc conductive sheets extending along the arc slot structure are arranged on two sides of the gate seat part and in the arc slot structure, the arc conductive sheets are electrically connected with the gate seat part, and when the main circuit connection mechanism rotates and is switched to the standby circuit connection mechanism, the connection contacts adjacent to the main circuit connector extend into the arc slot structure to be in contact with the arc conductive sheets.
In a further embodiment, two adjacent connecting gate seats are connected through a connecting rod, two mounting seats are fixed on the supporting frame and located at two ends of the insulating rotating shaft, through holes matched with the insulating rotating shaft are formed in the mounting seats, and two adjacent connecting gate seats are connected with the adjacent mounting seats through supporting rods respectively.
In a further embodiment, an alarm is provided in the sealed box of the switching device, and the alarm is electrically connected with the instantaneous voltage detector.
In a further embodiment, the two ends of the upper mounting plate and the lower mounting plate are respectively fixed with an edge panel, two ends of each edge panel are respectively provided with an adjusting hole, an adjusting bolt matched with the adjusting holes is arranged in the sealing box body of the switch device, and a limiting nut is arranged on the adjusting bolt.
In a further embodiment, the same ends of several of the contact blades are all connected to the same insulating ceramic handle.
In a further embodiment, the driving mechanism comprises an independent driving power supply arranged in the protective shell, a driving motor electrically connected with the independent driving power supply is arranged below the independent driving power supply, the output end of the driving motor is connected with the first bevel gear, one end of the insulating rotating shaft extends into the protective shell to be connected with the second bevel gear, and the second bevel gear is meshed with the first bevel gear.
In a further embodiment, the upper mounting plate is provided with a first pressure sensor for sensing pressure when the V-shaped contact is clamped into the main circuit joint, the lower mounting plate is provided with a second pressure sensor for sensing pressure when the V-shaped contact is clamped into the standby circuit joint, and the first pressure sensor and the second pressure sensor are respectively electrically connected with the driving motor.
In a further embodiment, the upper and lower mounting plates are located on the same plane as the support frame, and the main and backup circuit connectors protrude from the plane.
Compared with the prior art, the invention has the following beneficial effects:
1. when the sealed box body of the switch device works normally, the connecting gate seat is communicated with the outlet terminal, one end of a contact piece, adjacent to a main circuit joint, on the V-shaped contact is matched with the main circuit joint in a clamping way, at the moment, a connecting contact, adjacent to the main circuit joint, on the V-shaped contact extends into a closing groove on the connecting gate seat, the main circuit is communicated, the instantaneous voltage on the main circuit is detected through the instantaneous voltage detector, when the detected instantaneous voltage exceeds a threshold value, the instantaneous voltage detector transmits a signal to the driving mechanism, the driving mechanism drives the insulating rotating shaft to rotate, and then drives the V-shaped contact to rotate around the insulating rotating shaft, one end of the contact piece, adjacent to the main circuit joint, on the V-shaped contact is matched with the main circuit joint in a clamping way, at the moment, the connecting contact, adjacent to the main circuit joint, on the V-shaped contact extends into the closing groove on the connecting gate seat, so that the standby circuit is communicated, when the detected instantaneous voltage exceeds a threshold value, the instantaneous voltage detector transmits a signal to the driving mechanism, the driving mechanism drives the insulating rotating shaft to rotate, and then drives the V-shaped contact to rotate around the insulating rotating shaft, and the contact piece is matched with the main circuit joint on the main circuit joint, at the moment, the V-shaped contact piece adjacent to the main circuit joint is connected with the main circuit joint, the connecting contact is connected with the connecting contact, the connecting contact piece, the connecting contact is stretched into the closing groove, and the closing groove;
2. the V-shaped contact with the bent middle part and the obtuse included angle is formed, so that the switching stroke is short when the V-shaped contact is switched from the main circuit to the standby circuit in a rotating way, the circuit switching speed is further ensured, equipment faults caused by long-time voltage drop due to slow circuit switching of the power equipment with very low voltage drop tolerance are prevented, and the safety of equipment operation is further ensured;
3. through V type contact and connection brake seat matched with, compare traditional straight slice brake switch and saved in the switchgear seal box and supplied switch pivoted space, make the insulating pivot rotate the time convenient removal of connecting contact in the brake-on groove through the setting of arc brake-on groove, when switch to stand-by circuit from main circuit rotation, be located the connection brake seat side and connect the connection contact that approaches with main circuit and rotate stretch into in the arc groove structure with arc conducting strip contact, cooperation brake seat portion and wire outlet terminal, and then make stand-by circuit intercommunication, guarantee the security of combined floodgate when conveniently connecting contact and connection brake seat are connected, the V type contact has been simplified with the connection of connection brake seat under the prerequisite of not destroying brake blade structure simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an insulating shaft mounting structure of the present invention;
FIG. 3 is a schematic view of the centering structure of the V-shaped contact of the present invention;
FIG. 4 is a side view of the V-shaped contact of the present invention in communication with a main circuit;
FIG. 5 is a side view of the V-contact of the present invention in communication with a backup circuit;
FIG. 6 is a schematic view of the structure of the connecting contact brake-on slot in the centered state of the V-shaped contact of the present invention;
FIG. 7 is a schematic view of the structure of the V-shaped contact of the present invention in a normal operating state, wherein the connecting contact enters the brake-closing slot when the V-shaped contact is communicated with the main circuit;
FIG. 8 is a schematic diagram of the structure of the V-shaped contact of the present invention entering the switch-on slot when the V-shaped contact is connected with the standby circuit after the circuit switching;
the reference numerals are: the switch equipment sealing box body 1, the support frame 2, the upper mounting plate 3, the main circuit connector 4, the lower mounting plate 5, the standby circuit connector 6, the side connection panel 7, the instantaneous voltage detector 8, the alarm 9, the mounting seat 10, the insulating rotating shaft 11, the protective shell 12, the independent driving power supply 13, the driving motor 14, the first bevel gear 15, the second bevel gear 16, the V-shaped contact 17, the connecting gate seat 18, the connecting contact 19, the connecting rod 20, the gate seat 21 and the arc-shaped conducting sheet 22.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a gas-insulated metal-enclosed switchgear with emergent change over switch, including switchgear sealed box 1, main circuit coupling mechanism, reserve circuit coupling mechanism, switch mechanism, power unit and instantaneous voltage detector 8 are established in switchgear sealed box 1, switch mechanism is established between main circuit coupling mechanism and reserve circuit coupling mechanism that is connected with the reserve circuit with the main circuit coupling mechanism, power unit is used for driving the switch mechanism to rotate and switch, instantaneous voltage detector 8 is used for detecting the instantaneous voltage on the main circuit that is linked together with main circuit coupling mechanism, when the instantaneous voltage of detection exceeds threshold value, power unit drive switch mechanism is rotated by main circuit coupling mechanism and is switched to reserve circuit coupling mechanism;
the main circuit connecting mechanism comprises an upper mounting plate 3 connected with a main circuit, the upper mounting plate 3 is provided with a main circuit joint 4, the standby circuit connecting mechanism comprises a lower mounting plate 5 connected with a standby circuit, the lower mounting plate 5 is provided with a standby circuit joint 6, a support frame 2 is arranged between the upper mounting plate 3 and the lower mounting plate 5, and the middle part of the support frame 2 is provided with an insulating rotating shaft 11 and a plurality of connecting gate seats 18;
the switch mechanism is arranged on the support frame 2 and comprises a contact assembly, the contact assembly comprises a plurality of groups of V-shaped contacts 17 which are arranged side by side, each V-shaped contact 17 is formed by a plurality of contact blades which are bent towards the side far away from the support frame 2 and have obtuse angles after bending, two ends of each contact blade respectively correspond to the main circuit joint 4 and the standby circuit joint 6, a connecting gate seat 18 is positioned on one side of each V-shaped contact 17 opposite to the support frame 2 and corresponds to the V-shaped contacts 17 one by one, the connecting gate seat 18 is communicated with an outgoing terminal arranged in the sealed box body 1 of the switch device, the bending part of the middle part of each contact blade is fixedly sleeved on the insulating rotating shaft 11, two connecting contacts 19 are symmetrically arranged on the side of each contact blade far away from the support frame 2 and at the bending part in the middle, a closing slot matched with the connecting contacts 19 is formed on the connecting gate seat 18, when the V-shaped contacts 17 are communicated with the main circuit joint 4, the connecting contacts 19 close to the standby circuit joint 6 enter the closing slot to be electrically communicated with the connecting gate seat 18, and when the V-shaped contacts 17 are communicated with the standby circuit joint 6, the connecting contacts 19 close to the main circuit joint 4 enter the closing slot to be electrically communicated with the connecting gate seat 18;
the power mechanism comprises a protective shell 12 arranged at one end of the insulating rotating shaft 11, a driving mechanism for driving the insulating rotating shaft 11 to rotate is arranged in the protective shell 12, and the driving mechanism is electrically connected with the instantaneous voltage detector 8;
the outlet terminal is arranged in the switch equipment sealing box body 1, and a basic equipment device arranged in the gas-insulated metal-enclosed switch equipment in the prior art such as an isolating switch, a grounding switch, a voltage transformer and a current transformer is also arranged in the switch equipment sealing box body 1, so that the normal operation of the gas-insulated metal-enclosed switch equipment is ensured.
Through the technical proposal, when the switch equipment sealing box body 1 works normally, the connecting gate seat 18 is communicated with the outlet terminal, one end of the V-shaped contact 17 adjacent to the main circuit connector 4 on the main circuit connecting mechanism is in clamping fit with the main circuit connector 4, at the moment, the connecting contact 19 on one end of the V-shaped contact 17 adjacent to the standby circuit connector 6 on the standby circuit connecting mechanism stretches into the closing slot on the connecting gate seat 18, the main circuit is communicated, the instantaneous voltage on the main circuit is detected through the instantaneous voltage detector 8, when the detected instantaneous voltage exceeds a threshold value, the instantaneous voltage detector 8 transmits a signal to the driving mechanism, the driving mechanism drives the insulating rotating shaft 11 to rotate through the driving mechanism, further drives the V-shaped contact 17 to rotate around the insulating rotating shaft 11, one end of the V-shaped contact 17 adjacent to the standby circuit connector 6 on the standby circuit connecting mechanism rotates and is in clamping fit with the standby circuit connector 6, at this time, the connecting contact 19 on one end of the V-shaped contact 17 adjacent to the main circuit connector 4 on the main circuit connecting mechanism stretches into the closing slot on the connecting gate seat 18, so that the standby circuit is communicated, the V-shaped contact 17 is driven by the driving mechanism to rotate and switch from the main circuit connecting mechanism to the standby circuit connecting mechanism when the main circuit in the sealed box 1 of the switch device fails, the emergency working requirement of the gas-insulated metal-enclosed switch device under the condition that staff is not on site is realized, the defect that the box door of the sealed box 1 of the switch device needs to be opened to switch the circuit when the internal failure of the sealed box 1 of the switch device occurs is overcome, the V-shaped contact 17 with an obtuse included angle is bent at the middle part, so that the switching stroke is short when the V-shaped contact 17 is switched from the rotation of the main circuit to the standby circuit, and then guarantee that circuit switching is fast, prevent that part from being to the very low power equipment of voltage decline tolerance because circuit switching is slow to lead to the equipment trouble that the voltage drops for a long time to arouse, and then guarantee the security of equipment work, cooperate with the connection brake seat 18 through V type contact 17 simultaneously, compare traditional straight slice knife switch and saved the interior confession switch pivoted space of switchgear seal box 1, make the insulating pivot 11 move in the closing groove of convenience connection contact 19 when rotating through the setting of arc closing groove, when switching to stand-by circuit from main circuit rotation, be located the connection contact 19 rotation that the connection brake seat 18 side is close to with main circuit joint 4 stretches into the closing groove and is connected with brake seat block, the cooperation terminal of being qualified for the next round of competitions, and then make stand-by circuit intercommunication, guarantee the security of closing a floodgate when making things convenient for connection contact 19 to be connected with connection brake seat 18, the connection of V type contact 17 and connection brake seat 18 has been simplified under the premise of not destroying the knife structure simultaneously.
In a further embodiment, the V-shaped contact 17 forms an obtuse angle in the range of 140 ° -170 °.
Through the technical scheme, the obtuse angle range of the bent V-shaped contact 17 is set to 140-170 degrees, so that the switching stroke of the V-shaped contact 17 is short when the V-shaped contact 17 is switched from the main circuit to the standby circuit in a rotating way, the circuit switching speed is further ensured, equipment faults caused by long-time voltage drop of power equipment with very low voltage drop tolerance due to the circuit switching are prevented, and the safety of equipment operation is further ensured.
In a further embodiment, the two connection contacts 19 are respectively adjacent to the sides of the connection gate seat 18 facing the main circuit connector 4 and the standby circuit connector 6, the closing slot is an arc slot structure taking the axis of the insulation rotating shaft 11 as the center of a circle, the middle part of the arc slot structure is provided with a gate seat part 21 connected with the wire outlet terminal, two sides of the gate seat part 21 and in the arc slot structure are provided with arc conductive sheets 22 extending along the arc slot structure, the arc conductive sheets 22 are electrically connected with the gate seat part 21, and when the main circuit connection mechanism rotates to switch to the standby circuit connection mechanism, the connection contact 19 adjacent to the main circuit connector 4 stretches into the arc slot structure to contact with the arc conductive sheets 22.
Through the technical scheme, the insulating rotary shaft 11 is arranged in the arc-shaped brake closing groove, the connecting contact 19 is convenient to move in the brake closing groove when rotating, when the main circuit rotates and is switched to the standby circuit, the connecting contact 19 located on the side face of the connecting brake seat 18 and adjacent to the main circuit connector 4 rotates and stretches into the arc-shaped groove structure to be in contact with the arc-shaped conductive sheet, the brake seat is matched with the wire outlet terminal, the standby circuit is further communicated, the connecting contact 19 is convenient to be connected with the connecting brake seat 18, the safety of brake closing is guaranteed, and the connecting contact 19 stretches into the arc-shaped groove structure to be in contact with the arc-shaped conductive sheet, and contact friction is generated between the connecting contact 19 and the arc-shaped conductive sheet.
In a further embodiment, adjacent connecting gate seats 18 are connected through a connecting rod 20, two mounting seats 10 are fixed on the support frame 2, the two mounting seats 10 are located at two ends of the insulating rotating shaft 11, through holes matched with the insulating rotating shaft 11 are formed in the mounting seats 10, and two connecting gate seats 18 adjacent to the two mounting seats 10 are respectively connected with the adjacent mounting seats 10 through supporting rods.
Through the above technical scheme, the connection between the adjacent connection gate seats 18 is stable through the arrangement of the connecting rod 20, the rotation of the insulation rotating shaft 11 is facilitated through the arrangement of the through hole, the support rod is matched with the installation seat 10, and then the installation of the plurality of connection gate seats 18 is stable, wherein the plurality of connection gate seats 18 are arranged at the horizontal one side position of the insulation rotating shaft 11, and the space is saved when the connection gate seats 18 are connected without influencing the connection of the V-shaped contact 17 when the V-shaped contact 17 is driven by the insulation rotating shaft 11 to rotate.
In a further embodiment, an alarm 9 is provided in the switchgear sealed box 1, and the alarm 9 is electrically connected to the instantaneous voltage detector 8.
Through above-mentioned technical scheme, transmit the signal to alarm 9 through instantaneous voltage detector 8, report to the police through alarm 9, conveniently remind the staff to carry out maintenance operation.
In a further embodiment, the two ends of the upper mounting plate 3 and the lower mounting plate 5 are both fixed with side connecting panel 7, the two ends of the side connecting panel 7 are both provided with adjusting holes, an adjusting bolt matched with the adjusting holes is arranged in the sealed box body 1 of the switch equipment, and a limit nut is arranged on the adjusting bolt.
Through above-mentioned technical scheme, cooperate with stop nut through adjusting bolt, conveniently adjust the position of mounting panel 3 and lower mounting panel 5 through the side and connect panel 7, and then conveniently adjust the position of main circuit joint 4 and reserve circuit joint 6 according to V type contact 17.
In a further embodiment, the same ends of several of the contact blades are all connected to the same insulating ceramic handle.
Through above-mentioned technical scheme, the setting through insulating ceramic handle is convenient to be through artifical pulling insulating ceramic handle with a plurality of contact piece and the cooperation of main circuit joint 4 joint before closing switchgear seal box 1 chamber door.
In a further embodiment, the driving mechanism comprises an independent driving power supply 13 arranged in the protective shell 12, a driving motor 14 electrically connected with the independent driving power supply 13 is arranged below the independent driving power supply 13, an output end of the driving motor 14 is connected with a first bevel gear 15, one end of an insulating rotating shaft 11 extends into the protective shell 12 and is connected with a second bevel gear 16, the second bevel gear 16 is meshed with the first bevel gear 15, and the instantaneous voltage detector 8 is electrically connected with the driving motor 14.
Through above-mentioned technical scheme, independent drive power supply 13 supplies power, drives first bevel gear 15 through driving motor 14 and rotates, and then drives insulating pivot 11 through second bevel gear 16 and rotate, and wherein independent drive power supply 13 is independent of gas-insulated metal-enclosed switchgear, and independent drive power supply 13 can be the battery.
In a further embodiment, the upper mounting plate 3 is provided with a first pressure sensor for sensing pressure when the V-shaped contact 17 is clamped into the main circuit connector 4, the lower mounting plate 5 is provided with a second pressure sensor for sensing pressure when the V-shaped contact 17 is clamped into the standby circuit connector 6, and the first pressure sensor and the second pressure sensor are respectively electrically connected with the driving motor 14.
Through the technical scheme, the pressure when the V-shaped contact 17 clamped into the main circuit connector 4 and the standby circuit connector 6 is detected through the first pressure sensor and the second pressure sensor, and the influence of overlarge rotation amplitude of the V-shaped contact 17 on the clamping connection of the contact piece with the main circuit connector 4 and the standby circuit connector 6 is prevented.
In a further embodiment, the upper mounting plate 3 and the lower mounting plate 5 are located on the same plane as the support frame 2, from which the main circuit connection 4 and the standby circuit connection 6 protrude.
Through above-mentioned technical scheme, through protruding last mounting panel 3 and the mounting panel 5 that set up down for two contact pieces are convenient to cooperate with main circuit joint 4 and reserve circuit joint 6 when V type contact 17 rotates around insulating pivot 11, make things convenient for main circuit and reserve circuit's intercommunication.
Working principle: when the switch equipment sealing box body 1 works normally, the connecting gate seat 18 is communicated with the outlet terminal, one end of a contact piece adjacent to the main circuit connector 4 on the main circuit connecting mechanism on the V-shaped contact 17 is matched with the main circuit connector 4 in a clamping way, at the moment, a connecting contact 19 on one end of the contact piece adjacent to the standby circuit connector 6 on the standby circuit connecting mechanism on the V-shaped contact 17 stretches into a closing groove on the connecting gate seat 18, the main circuit is communicated, the instantaneous voltage on the main circuit is detected by the instantaneous voltage detector 8, when the detected instantaneous voltage exceeds a threshold value, the instantaneous voltage detector 8 transmits a signal to the driving mechanism, the independent driving power supply 13 supplies power, the driving motor 14 drives the first bevel gear 15 to rotate, the second bevel gear 16 drives the insulating rotary shaft 11 to rotate, and the V-shaped contact 17 is driven to rotate around the insulating rotary shaft 11, one end of the V-shaped contact 17 adjacent to the spare circuit connector 6 on the spare circuit connecting mechanism rotates and is matched with the spare circuit connector 6 in a clamping way, at the moment, a connecting contact 19 on one end of the V-shaped contact 17 adjacent to the main circuit connector 4 on the main circuit connecting mechanism stretches into a closing slot on a connecting gate seat 18, so that the spare circuit is communicated, the V-shaped contact 17 is driven by a driving mechanism to rotate and switch to the spare circuit connecting mechanism by the main circuit connecting mechanism when the main circuit in the sealed box body 1 of the switch equipment fails, the emergency working requirement of a worker for gas-insulated metal sealed switch equipment under the condition of not on site is met, the defect that a box door of the sealed box body 1 of the switch equipment needs to be opened to switch the circuit is overcome, the V-shaped contact 17 with an obtuse included angle is formed by bending the middle part, the V-shaped contact 17 is short in switching stroke when being switched to a standby circuit from the rotation of a main circuit, circuit switching is fast, equipment faults caused by long-time voltage drop of power equipment with very low voltage drop tolerance due to slow circuit switching are prevented, safety of equipment operation is further guaranteed, meanwhile, the V-shaped contact 17 is matched with the connecting gate seat 18, space for switching rotation in the sealed box body 1 of the switching equipment is saved compared with a traditional straight sheet-shaped knife switch, the insulating rotary shaft 11 is enabled to conveniently move in the switching-in groove through the arrangement of the arc-shaped switching-in groove, when the main circuit is switched to the standby circuit, the connecting contact 19 located on the side face of the connecting gate seat 18 and close to the main circuit connector 4 is enabled to rotate and stretch into the arc-shaped groove structure to be in contact with the arc-shaped conducting strip, the cooperation gate seat and the outgoing line terminal are communicated, the safety of switching-in of the connecting contact 19 and the connecting gate seat 18 is guaranteed, and meanwhile connection of the V-shaped contact 17 and the connecting gate seat 18 is simplified on the premise that the knife structure is not damaged.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solutions of the present invention within the scope of the technical concept of the present invention, and all such equivalent changes belong to the protection scope of the present invention.

Claims (10)

1. The gas-insulated metal-enclosed switchgear with the emergency change-over switch is characterized by comprising a switchgear sealing box body (1), a main circuit connecting mechanism, a standby circuit connecting mechanism, a switch mechanism, a power mechanism and an instantaneous voltage detector (8), wherein the main circuit connecting mechanism, the standby circuit connecting mechanism, the switch mechanism, the power mechanism and the instantaneous voltage detector (8) are arranged in the switchgear sealing box body (1), the switch mechanism is arranged between the main circuit connecting mechanism connected with the main circuit and the standby circuit connecting mechanism connected with the standby circuit, the power mechanism is used for driving the switch mechanism to rotate and switch, the instantaneous voltage detector (8) is used for detecting the instantaneous voltage on the main circuit communicated with the main circuit connecting mechanism, and when the detected instantaneous voltage exceeds a threshold value, the power mechanism drives the switch mechanism to rotate and switch from the main circuit connecting mechanism to the standby circuit connecting mechanism;
the main circuit connecting mechanism comprises an upper mounting plate (3) connected with a main circuit, a main circuit connector (4) is arranged on the upper mounting plate (3), the standby circuit connecting mechanism comprises a lower mounting plate (5) connected with a standby circuit, a standby circuit connector (6) is arranged on the lower mounting plate (5), a support frame (2) is arranged between the upper mounting plate (3) and the lower mounting plate (5), and an insulating rotating shaft (11) and a plurality of connecting gate seats (18) are arranged in the middle of the support frame (2);
the switch mechanism is arranged on the support frame (2), the switch mechanism comprises a contact assembly, the contact assembly comprises a plurality of groups of V-shaped contacts (17) which are arranged side by side, the V-shaped contacts (17) are formed by contact blades which are bent towards one side far away from the support frame (2) and have obtuse angles, two ends of each contact blade respectively correspond to the main circuit joint (4) and the standby circuit joint (6), the connecting gate seats (18) are positioned on one side, opposite to the support frame (2), of each V-shaped contact (17) and correspond to the V-shaped contacts (17) one by one, the connecting gate seats (18) are communicated with outlet terminals arranged in the sealing box body (1) of the switch device, the bent parts of the middle parts of the contact blades are fixedly sleeved on the insulating rotating shaft (11), two connecting contacts (19) are symmetrically arranged at the bent parts of the middle parts of the contact blades, which are far away from one side of the support frame (2), and the connecting gate seats (18) are provided with closing grooves matched with the connecting contacts (19);
the power mechanism comprises a protective shell (12) arranged at one end of the insulating rotating shaft (11), a driving mechanism used for driving the insulating rotating shaft (11) to rotate is arranged in the protective shell (12), and the driving mechanism is electrically connected with the instantaneous voltage detector (8).
2. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the obtuse angle formed by the V-shaped contact (17) ranges from 140 DEG to 170 deg.
3. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the two connecting contacts (19) are respectively adjacent to the side surfaces of the connecting gate seat (18) facing the main circuit connector (4) and the standby circuit connector (6), the closing slot is of an arc slot structure taking the axis of the insulating rotating shaft (11) as the center of a circle, the middle part of the arc slot structure is provided with a gate seat (21) connected with an outgoing line terminal, the two sides of the gate seat (21) are positioned in the arc slot structure, arc-shaped conducting strips (22) extending along the arc slot structure are arranged in the arc slot structure, the arc-shaped conducting strips (22) are electrically connected with the gate seat (21), and when the main circuit connecting mechanism rotates and is switched to the standby circuit connecting mechanism, the connecting contacts (19) adjacent to the main circuit connector (4) extend into the arc-shaped slot structure to be contacted with the arc-shaped conducting strips (22).
4. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: adjacent connect between floodgate seat (18) through connecting rod (20), be fixed with two mount pad (10) on support frame (2), two mount pad (10) are located insulating pivot (11) both ends, set up on mount pad (10) with insulating pivot (11) matched with through-hole, with two connect floodgate seat (18) adjacent with adjacent mount pad (10) are connected respectively through the bracing piece.
5. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: an alarm (9) is arranged in the switch equipment sealing box body (1), and the alarm (9) is electrically connected with the instantaneous voltage detector (8).
6. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the sealing box is characterized in that the two ends of the upper mounting plate (3) and the two ends of the lower mounting plate (5) are respectively fixed with an edge connecting panel (7), adjusting holes are formed in the two ends of the edge connecting panels (7), adjusting bolts matched with the adjusting holes are arranged in the sealing box body (1) of the switch equipment, and limiting nuts are arranged on the adjusting bolts.
7. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the same ends of the contact blades are connected with the same insulating ceramic handle.
8. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the driving mechanism comprises an independent driving power supply (13) arranged in a protective shell (12), a driving motor (14) electrically connected with the independent driving power supply (13) is arranged below the independent driving power supply (13), the output end of the driving motor (14) is connected with a first bevel gear (15), one end of an insulating rotating shaft (11) stretches into the protective shell (12) to be connected with a second bevel gear (16), and the second bevel gear (16) is meshed with the first bevel gear (15).
9. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 8, characterized in that: the upper mounting plate (3) is provided with a first pressure sensor for sensing pressure when the V-shaped contact (17) is clamped into the main circuit joint (4), the lower mounting plate (5) is provided with a second pressure sensor for sensing pressure when the V-shaped contact (17) is clamped into the standby circuit joint (6), and the first pressure sensor and the second pressure sensor are respectively and electrically connected with the driving motor (14).
10. A gas insulated metal-enclosed switchgear with emergency diverter switch according to claim 1, characterized in that: the upper mounting plate (3) and the lower mounting plate (5) are positioned on the same plane with the supporting frame (2), and the main circuit connector (4) and the standby circuit connector (6) are arranged to protrude out of the plane.
CN202410135253.3A 2024-01-31 2024-01-31 Gas-insulated metal-enclosed switchgear with emergency change-over switch Active CN117712910B (en)

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CN202410135253.3A CN117712910B (en) 2024-01-31 2024-01-31 Gas-insulated metal-enclosed switchgear with emergency change-over switch

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CN202410135253.3A CN117712910B (en) 2024-01-31 2024-01-31 Gas-insulated metal-enclosed switchgear with emergency change-over switch

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070266752A1 (en) * 2003-06-04 2007-11-22 Finn-Power Oy System for Metering the Bending Angle in a Machine for Bending Metallic Sheets and/or Sections, as Well as Method and Machine for Bending Metallic Sheets and/or Sections Using Such System
CN104851625A (en) * 2015-04-27 2015-08-19 苏州君丰辰电子科技有限公司 Dual-power changeover switch
KR20160141575A (en) * 2015-06-01 2016-12-09 엘에스산전 주식회사 Three position mechanism of gas insulated switchgear
CN207542656U (en) * 2017-06-22 2018-06-26 广东紫光电气有限公司 A kind of double isolation armouring mobile vacuum high-tension switch gears of straight cutting
CN109830911A (en) * 2019-01-10 2019-05-31 广东阿尔派电力科技股份有限公司 The gas-insulating and fully-enclosed all insulation looped network switch apparatus of novel environment friendly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070266752A1 (en) * 2003-06-04 2007-11-22 Finn-Power Oy System for Metering the Bending Angle in a Machine for Bending Metallic Sheets and/or Sections, as Well as Method and Machine for Bending Metallic Sheets and/or Sections Using Such System
CN104851625A (en) * 2015-04-27 2015-08-19 苏州君丰辰电子科技有限公司 Dual-power changeover switch
KR20160141575A (en) * 2015-06-01 2016-12-09 엘에스산전 주식회사 Three position mechanism of gas insulated switchgear
CN207542656U (en) * 2017-06-22 2018-06-26 广东紫光电气有限公司 A kind of double isolation armouring mobile vacuum high-tension switch gears of straight cutting
CN109830911A (en) * 2019-01-10 2019-05-31 广东阿尔派电力科技股份有限公司 The gas-insulating and fully-enclosed all insulation looped network switch apparatus of novel environment friendly

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