WO2016045028A1 - Vacuum load switch - Google Patents

Vacuum load switch Download PDF

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Publication number
WO2016045028A1
WO2016045028A1 PCT/CN2014/087379 CN2014087379W WO2016045028A1 WO 2016045028 A1 WO2016045028 A1 WO 2016045028A1 CN 2014087379 W CN2014087379 W CN 2014087379W WO 2016045028 A1 WO2016045028 A1 WO 2016045028A1
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WO
WIPO (PCT)
Prior art keywords
isolating
load switch
grounding
terminal
energy storage
Prior art date
Application number
PCT/CN2014/087379
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French (fr)
Chinese (zh)
Inventor
杨辉煌
涂占炜
刘勇
李巧玲
Original Assignee
Abb技术有限公司
杨辉煌
涂占炜
刘勇
李巧玲
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.)
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Application filed by Abb技术有限公司, 杨辉煌, 涂占炜, 刘勇, 李巧玲 filed Critical Abb技术有限公司
Priority to PCT/CN2014/087379 priority Critical patent/WO2016045028A1/en
Publication of WO2016045028A1 publication Critical patent/WO2016045028A1/en

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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

Definitions

  • the present invention relates to the field of power products and machinery, and more particularly to a vacuum load switch device for medium voltage gas insulation.
  • the load switch (abbreviated as LBS) is widely used in the secondary ring counter means, of which approximately 50% of the load switch sulfur hexafluoride (SF 6) load switch It has the advantages of reliable insulation and small size of equipment, but it is not environmentally friendly; another 25% of the load switches are vacuum load switches, which have the advantages of reliable insulation and environmental friendliness, but the size of the equipment is large.
  • LBS load switch
  • SF 6 load switch sulfur hexafluoride
  • the SF 6 load switch with sulfur hexafluoride as the insulating medium can be made very compact in terms of product size by virtue of the strong breaking and closing ability and insulation performance of SF 6 , which is very suitable for secondary ring network.
  • the sulphur hexafluoride load switch has been gradually eliminated by users due to its environmentally unfriendly shortcomings.
  • About 1% of the sulphur hexafluoride load switch is vacuum load switch every year. Replaced.
  • the vacuum load switch uses vacuum as the breaking medium, but most of its live parts are still completely exposed to the air.
  • the product size must be made large, to a large extent. This caused a waste of space.
  • the present invention addresses a shortcoming and deficiencies in the prior art and proposes a new vacuum load switch solution.
  • the present invention is directed to the above-mentioned existing sulphur hexafluoride load switch and vacuum load switch, and provides a vacuum load switch for medium voltage gas insulation, including three-phase independent and identically designed high-voltage conductive circuits and operating mechanisms.
  • Supporting box body and transmission device wherein each phase high-voltage conductive circuit comprises a load switch unit with a vacuum interrupter, an isolating switch unit and a grounding switch unit;
  • the operating mechanism comprises a load switch operating mechanism for controlling the load switch unit, and controlling The isolating switch unit and the grounding switch unit of the grounding switch unit;
  • the transmission device comprises a load switch transmission device of the load switch unit and an isolating switch transmission device of the isolating switch unit and the grounding switch unit.
  • each phase high voltage conductive loop includes an isolating knife gate, an upper incoming terminal, an isolating terminal, a grounding terminal, and a grounding outgoing terminal; and the isolating knife gate, the upper incoming terminal, the isolating terminal, The grounding terminal and the grounding outlet terminal are configured such that the isolating knife gate can be connected to the upper incoming terminal and the isolating terminal, so that the isolating switch unit is in an on state and the grounding switch unit is in an open state; the isolating knife can be connected to the isolating terminal and the grounding a terminal, so that the isolating switch unit is in an open state and the grounding switch unit is also in an open state; the isolating knife gate can be connected to the grounding terminal and the grounding outlet terminal, so that the isolating switch unit is in an open state and the grounding switch unit is in a closed state Brake status.
  • the load switch unit includes a vacuum interrupter, a soft connection, a tie rod assembly, a seal cover, an inner seal ring and an outer seal ring, and a lower wire terminal.
  • the isolating switch unit and the grounding switch unit comprise an upper incoming terminal, an isolating knife gate, a knife gate drive, a hexagonal spindle, an isolating terminal, a grounding terminal, and a grounding outlet terminal; And grounding switch unit.
  • the conductive components of the load switch unit, the isolating switch unit and the grounding switch unit are integrally sealed by an epoxy housing.
  • the vacuum load switch further includes a hexagonal spindle; the isolating blade is fixed to the hexagonal spindle and is rotatable with rotation of the hexagonal spindle.
  • the operating mechanism comprises an energy storage unit; for providing energy for fast closing of the grounding switch, a limiting unit for limiting the position during operation of the vacuum load switch; and an interlocking unit For preventing misuse.
  • the operating mechanism further includes a support plate and a support shaft.
  • the energy storage unit comprises an energy storage shaft, an energy storage spring, an energy storage spring support plate, an energy storage spring support shaft, a spacer sleeve, an energy storage spring guide plate, an energy storage spring guiding bushing, an energy storage spring pushing shaft, and energy storage.
  • the limiting unit comprises a limiting plate, an isolating switch closing half shaft, a half shaft limiting device and a half shaft return spring; the components are sequentially connected.
  • the interlocking unit comprises an interlocking bracket, an anti-operation interlocking piece, an anti-operation interlocking piece guiding sleeve, an isolation limiting pin, an isolation limiting pin return spring, an isolating switch closing knob, an upper cushion and a lower cushion; The parts are connected in sequence.
  • the epoxy resin housing is additionally equipped with a front end cover and a rear end cover for improving creepage distance and insulation performance.
  • the front end cover and the rear end cover are provided with an observation window.
  • the operating mechanism further includes an operating handle that can drive the energy storage shaft.
  • the vacuum load switch of the invention realizes the load switch, the isolating switch and the grounding switch in one component by the rotary motion of the isolating knife gate and the breaking and closing function of the vacuum interrupter Three functions, combined with the function of the control operating mechanism, save the number of knife gates and the number of operating mechanisms, and greatly reduce the space size of the load switch device without sulfur hexafluoride gas, which saves cost and saves equipment Ground space.
  • FIG. 1A-1B are structural views of a medium voltage gas insulated vacuum load switch of the present invention, wherein FIG. 1A is an overall structural view, and FIG. 1B is an internal structural view;
  • FIGS. 2A-2C are schematic diagrams showing the overall structure of the vacuum load switch of the present invention in different states; wherein, FIG. 2A is a schematic view of the overall structure when the vacuum load switch is in an on state; and FIG. 2B is an overall structure when the vacuum load switch is in an isolated state. Schematic; FIG. 2C is a schematic view of the overall structure when the vacuum load switch is in a grounded state;
  • FIGS. 3A-3C are schematic diagrams showing the structure of an isolating switch unit and a grounding switch unit of a high voltage main circuit in a vacuum load switch of the present invention; wherein, FIG. 3A is an isolating switch unit and a ground when the vacuum load switch is in an on state.
  • FIG. 3B is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in an isolated state;
  • FIG. 3C is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in a grounded state;
  • FIGS. 4A-4C are schematic structural views of the operating mechanism of the vacuum load switch of the present invention in different states; wherein, FIG. 4A is a schematic structural view of the operating mechanism when the vacuum load switch is in an ON state; FIG. 4B is a vacuum load switch in isolation. Schematic diagram of the operating mechanism in the state; FIG. 4C is a schematic structural view of the operating mechanism when the vacuum load switch is in the grounding state;
  • FIG. 5A-5C are single line diagrams of the vacuum load switch of the present invention in different states; wherein, FIG. 5A is a one-line diagram of the vacuum load switch of the present invention in an operating state, and FIG. 5B is a vacuum load switch of the present invention in an isolated state.
  • FIG. 5C is the vacuum negative of the present invention a one-line diagram of the load switch being grounded;
  • FIGS. 6A-6C are schematic views showing the structure of a high-voltage main circuit of the vacuum load switch of the present invention.
  • FIGS. 6A-6C also respectively show the high-voltage main circuit of the vacuum load switch of the present invention, in which the vacuum load switch is turned on.
  • High voltage main circuit structure in isolated state and in grounded state;
  • FIG. 7A is a one-line diagram of the vacuum load switch of the present invention in an operating state when used as an inlet cabinet
  • FIG. 7B is a one-line diagram of the vacuum load switch of the present invention in an isolated state when used as an inlet cabinet;
  • FIG. 8A-8B are corresponding to FIG. 7A-7B, which are schematic structural diagrams of a load switch unit and an isolating switch unit when the vacuum load switch of the present invention is used as an inlet cabinet; wherein, FIG. 8A is in an operating state, and FIG. 8B is in an isolated state. status;
  • FIG. 9A is a schematic view of the operating mechanism corresponding to the closing state of the high-voltage main circuit isolating switch
  • FIG. 9B is a schematic view of the operating mechanism corresponding to the opening state of the high-voltage main circuit isolating switch
  • FIG. 9C is a cross-sectional view of the left and right direction of FIG. 9A
  • FIG. 9E is a schematic structural view of the operating handle
  • FIGS. 10A-10C are schematic views showing the structure of the operating mechanism during the opening operation of the isolation switch by the vacuum load switch of the present invention; wherein, FIG. 10A shows the rotation of the isolation knife gate from the closing position to the opening position, as shown in FIG. 10B. The isolating switch is kept in the opening position, and FIG. 10C is shown to prevent the disconnecting switch from being closed due to the unloading of the energy storage handle;
  • FIGS. 11A-11D are schematic diagrams showing the structure of the operating mechanism during the fast closing operation of the grounding switch by the vacuum load switch of the present invention; wherein, FIG. 11A shows the opening of the anti-operation interlocking piece to start the grounding switch quick closing operation, FIG. 11B The notch on the limit pin can make the position energy storage plate rotate.
  • Figure 11C shows that the lever drives the energy output shaft to rotate under the action of the energy storage spring reset.
  • Figure 11D shows the ground switch quick closing;
  • FIGS. 12A-12D are schematic diagrams showing the structure of the energy storage unit of the operating mechanism during the operation of the grounding switch opening operation of the vacuum load switch of the present invention; wherein, in FIG. 12A, the anti-operation interlocking piece is opened, and the operating handle is inserted into the energy storage shaft.
  • Figure 12B shows the start of the grounding switch opening operation; the energy storage spring shown in Figure 12C passes the dead point position, Figure 12D shows the limit plate pressing the isolation switch closing half shaft, and the isolation knife gate reaches the isolation position;
  • FIGS 13A-13C are schematic diagrams showing the structure of the operating mechanism during the closing operation of the vacuum switch of the vacuum load switch of the present invention; wherein, FIG. 13A shows the unlocking switch of the isolating switch, and FIG. 13B shows the closing of the isolating switch. Position movement; Figure 13C shows the isolation knife gate reaching the closing position.
  • FIG. 1A-1B is a structural view of a medium voltage gas insulated vacuum load switch of the present invention, wherein FIG. 1A is an overall structural view, and FIG. 1B is an internal structural view.
  • the switch device mainly comprises a three-phase independent and identically designed high-voltage conductive circuit 1, an operating mechanism 2, a support box 3 and a transmission device 4; each phase of the high-voltage conductive circuit 1 comprises a load switch unit 10 with a vacuum interrupter, and isolation The switch unit 11 and the grounding switch unit 12;
  • the operating mechanism 2 includes a load switch operating mechanism 20 for controlling the load switch unit 10, and an isolated ground operating mechanism 21 for controlling the isolating switch unit 11 and the grounding switch unit 12;
  • the transmission device 4 includes a load switch unit The load switch transmission 41 of the 10 and the isolating switch unit 42 of the isolating switch unit 11 and the grounding switch unit 12.
  • each phase of the high voltage conductive loop 1 includes an isolating blade 109, an upper incoming terminal 108, an isolated terminal 112, a grounding terminal 113, and a grounded outgoing terminal 114;
  • the isolating blade 109, the upper incoming terminal 108, the isolated terminal 112, the grounding terminal 113, and the grounded outgoing terminal 114 are configured to:
  • the isolating blade 109 can be connected to the upper incoming terminal 108 and the isolated terminal 112 such that the isolating switch unit 11 is in an on state and the grounding switch unit 12 is in an open state; the isolating blade 109 can be connected to the isolating terminal 112 and the grounding terminal 113. So that the isolating switch unit 11 is in the open state and the grounding switch unit 12 is also in the open state; the isolating blade 109 can be connected to the grounding terminal 113 and the grounding outlet terminal 114, so that the isolating switch unit 11 is in the open state and The grounding switch unit 12 is in a closed state.
  • FIGS. 2A-2C are schematic diagrams showing the overall structure of the vacuum load switch of the present invention in different states; wherein, FIG. 2A is a schematic view of the overall structure when the vacuum load switch is in an on state; and FIG. 2B is an overall structure when the vacuum load switch is in an isolated state. Schematic; FIG. 2C is a schematic view of the overall structure when the vacuum load switch is in a grounded state;
  • FIGS. 3A-3C are schematic diagrams showing the structure of an isolating switch unit and a grounding switch unit of a high voltage main circuit in a vacuum load switch of the present invention
  • FIG. 3A is an isolating switch unit when the vacuum load switch is in an on state
  • FIG. 3B is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in an isolated state
  • FIG. 3C is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in a grounded state ;
  • FIG. 4A-4C are schematic structural views of the operating mechanism 2 of the vacuum load switch of the present invention in different states; wherein, FIG. 4A is a schematic structural view of the operating mechanism 2 when the vacuum load switch is in an ON state; FIG. 4B is a vacuum load switch. FIG. 4C is a schematic structural view of the operating mechanism 2 when the vacuum load switch is in a grounded state; FIG.
  • FIG. 5A is a one-line diagram of the vacuum load switch of the present invention in an operating state
  • FIG. 5B is a one-line diagram of the vacuum load switch of the present invention in an isolated state
  • FIG. 5C is a book
  • the vacuum load switch of the high-voltage conductive circuit of the invention When used as the outlet cabinet, it can satisfy various working states required by the single-line diagram of the outlet cabinet, and the working principle is as follows:
  • the high voltage main circuit 1 of each phase is composed of a load switch unit 10, an isolating switch unit 11 and a grounding switch unit 12, wherein the vacuum interrupter 101 is soft.
  • the connection 102, the tie rod assembly 103, the sealing cover 104, the inner seal ring 105 and the outer seal ring 106, and the lower outlet terminal 107 constitute a load switch unit; an upper feed terminal 108, an isolating knife gate 109, a knife gate drive 110, and a hexagonal spindle 111
  • the isolation terminal 112, the ground terminal 113, and the ground outlet terminal 114 constitute an isolation switch unit and a ground switch unit.
  • the main conductive member and the fixed insert 115 of the three units are integrally sealed by the epoxy housing 116, and the epoxy housing 116 is provided with a zigzag groove for increasing the creepage distance between the charged bodies.
  • the epoxy resin housing 116 is further equipped with a front end cover 117 and a rear end cover 118 for improving the creepage distance and the insulation performance.
  • the front and rear end covers are respectively provided with observation windows respectively for the observation window 1170 on the front end cover and the rear.
  • An observation window 1180 on the end cap is used to observe the position of the isolation knife gate 109.
  • the isolating knife gate 109 includes two blades, and the two blades are mounted on the knife gate driving device 110 and are fixed to the hexagonal spindle 111 by the knife gate driving device 110.
  • FIG. 6A-6C also illustrate the high voltage main circuit configuration of the high voltage main circuit of the vacuum load switch of the present invention when the vacuum load switch is in an on state, in an isolated state, and in a grounded state.
  • the vacuum load switch device utilizes the isolating knife gate 109 of the high-voltage main circuit 1 to rotate at a different position around the hexagonal main shaft 111 to realize the on-state and the isolation state, respectively. Grounded state.
  • the isolating blade 109 is on the left side shown in FIG. 6A, it is connected to the upper incoming terminal 108 and the isolated terminal 112.
  • the isolating switch unit is in the on state and the grounding switch unit is in the open state, when the load switch unit is also in the When the switch is in the closed state, the vacuum load switch device is in the running state, and the function requirement of the one-line diagram of FIG. 5A is realized;
  • the isolation terminal 112 and the ground terminal 113 are connected,
  • the isolating switch unit is in the open state and the grounding switch unit is also in the open state, when the load switch unit is also in the open state, the vacuum load switch device is in an isolated state, realizing the functional requirement of the single line diagram of FIG. 5B;
  • the knife gate 109 is on the right side shown in FIG.
  • the vacuum load switch of the present invention when used as an inlet cabinet , it needs to have a load switch function and an isolation switch function, and the ground function is an optional option.
  • the following are the inlet cabinets without grounding function. If the customer chooses to have the grounding function, refer to the first best example description.
  • the following figure shows the single line diagram of the incoming line cabinet without grounding function in various working states.
  • Figure 7A shows the single line diagram of the vacuum load switch of the present invention when it is used as the incoming line cabinet.
  • Figure 7B is the same.
  • the vacuum load switch of the high-voltage conductive circuit of the invention When used as the inlet cabinet, it can satisfy various working states required by the single-line diagram of the inlet cabinet, and the working principle is as follows:
  • FIG. 8A-8B are corresponding to FIG. 7A-7B, which are schematic structural diagrams of a load switch unit and an isolating switch unit when the vacuum load switch of the present invention is used as an inlet cabinet; wherein, FIG. 8A is in an operating state, and FIG. 8B is in an isolated state. status. 1A-1B, FIG. 6 and FIG. 6A-6C, the vacuum load switching device utilizes the isolating knife gate 109 of the high-voltage main circuit 1 to rotate at a different position around the hexagonal main shaft 111 to realize the connection. Pass state From the state. When the isolating blade 109 is on the left side shown in FIG. 8A, it is connected to the upper incoming terminal 108 and the isolated terminal 112.
  • the isolating switch unit is in an on state, and when the load switch unit is also in the closed state, the vacuum load is applied.
  • the switch device is in the running state, and realizes the functional requirement of the one-line diagram of FIG. 7A; when the isolating knife gate 109 is on the lower side shown in FIG. 8B, it is connected with the isolation terminal 112 and the support terminal 119, and the isolation switch unit is in the open state.
  • the vacuum load switch device is in an isolated state, realizing the functional requirements of the one-line diagram of FIG. 7B.
  • FIG. 9A is a schematic view of the high-pressure main circuit 1 isolating switch closing state corresponding to the operating mechanism 2
  • FIG. 9B is a schematic view of the high-pressure main circuit 1 isolating switch opening state corresponding to the operating mechanism 2
  • FIG. 9C is a left-right cross-sectional view of FIG. 9A
  • FIG. 9D It is a sectional view of the inner and outer directions of 9A
  • FIG. 9E is a schematic structural view of the operation handle.
  • the control operating mechanism 2 of the high-voltage main circuit 1 includes an energy storage unit for providing energy for fast closing of the grounding switch; a limiting unit for limiting the position during operation of the vacuum load switch; and an interlocking unit for preventing Misoperation; the components are connected in the order shown in the figure.
  • the support plate 201 and the support shaft 202 further comprise a basic frame; the energy storage shaft 203, the energy storage spring 204, the energy storage spring support plate 205, the energy storage spring support shaft 206, the spacer sleeve 207, and the energy storage spring guide plate 208.
  • the energy storage spring guiding bushing 209, the energy storage spring pushing shaft 210, the energy storage plate 211, the energy storage plate supporting shaft 212, the spring output lever 213, the energy output shaft 214 and the like; the components are sequentially connected as shown in the figure. It constitutes the energy storage unit and provides energy for the grounding switch to quickly close.
  • the operating mechanism 2 is equipped with a special operating handle 227 to drive the energy storage shaft 203 to perform energy storage and realize the isolation knife movement of the high pressure main circuit 1.
  • the energy output shaft 214 of the operating mechanism 2 is directly connected to the hexagonal spindle 111 of the high pressure main circuit 1 to realize the motion transmission from the operating mechanism 2 to the high pressure main circuit 1.
  • the movement process of the high-pressure main circuit 1 is a closed switch of the isolating switch, the opening of the isolating switch, the closing of the grounding switch, the opening of the grounding switch, and the closing of the isolating switch.
  • the closing switch also requires a certain closing force to prevent the isolating knife.
  • the gate 109 and the upper incoming terminal 108 are separated by electric power, and the grounding switch closing action must be quickly moved to meet the requirement of closing the short circuit fault current.
  • the operating mechanism 2 is in a corresponding state in the closed state of the isolating switch.
  • the energy storage spring 204 is pre-compressed to provide a certain force to be transmitted through the energy output shaft 214 to the isolating blade 109 to prevent the isolating blade.
  • the gate 109 and the upper incoming terminal 108 are separated by electrodynamic force, and the upper cushion 225 is pressed against the energy storage spring to urge the shaft 210 to prevent the spring from being reset.
  • FIGS. 10A-10C are schematic views showing the structure of the operating mechanism 2 during the opening operation of the isolation switch by the vacuum load switch of the present invention; wherein, FIG. 10A shows the rotation of the isolation knife gate from the closing position to the opening position, as shown in FIG. 10B.
  • FIG. 10C shows that the isolating switch closing operation is prevented because the energy storage handle is not pulled out.
  • the anti-operation interlocking piece 220 is opened, and the isolation operating end 2271 of the operating handle is inserted into the energy storage shaft 203 and rotated counterclockwise.
  • the ground closing operation end 2272 of the operating handle cannot be inserted because the limiting plate 215 will block the isolation limiting pin 222 from moving inward.
  • the energy storage spring 204 continues to be compressed by the energy storage spring pushing shaft 210 and the energy storage plate 211, while the spring output lever 213 drives The energy output shaft 214 rotates counterclockwise to drive the isolating knife gate 109 to rotate from the closing position to the opening position.
  • the inclined surface 2153 of the limiting plate 215 drives the isolating switch closing half shaft 216 to open clockwise, so that the limiting plate 215 can pass through the closing half shaft 216.
  • the U-shaped groove 2205 will catch the isolating switch closing knob 224, as shown in FIG. 10C, preventing the isolation switch closing operation from being damaged due to the unloading of the energy storage handle 227. And personal safety.
  • FIGS. 11A-11D are schematic views showing the structure of the operating mechanism 2 during the rapid closing operation of the grounding switch by the vacuum load switch of the present invention; wherein, FIG. 11A shows the opening of the anti-operation interlocking piece to start the grounding switch quick closing operation, FIG. 11B The notch on the limit pin can be used to rotate the energy storage plate.
  • Figure 11C shows that the lever drives the energy output shaft to rotate under the action of the energy storage spring reset.
  • Figure 11D shows the ground switch quick closing.
  • the anti-operation interlocking piece 220 is opened, and the grounding closing operation end 2272 of the operating handle is inserted into the energy storage shaft 203.
  • the grounding closing operation end 2272 of the operating handle will press the isolation limiting pin 222, because the limiting plate 215 The angle has been turned counterclockwise and the isolation limit pin 222 is no longer blocked, as shown in Fig. 11A.
  • the notch 2226 on the limit pin 222 can rotate the position energy storage plate 211 as shown in FIG. 11B.
  • the energy storage spring 204 continues to be compressed and rotates around the energy storage spring support shaft 206.
  • the energy storage spring 204 pushes the shaft 210 to disengage the energy storage plate 211.
  • the notch 2115 as shown in FIG.
  • the spring output lever 213 quickly drives the energy output shaft 214 to rotate, thereby realizing the isolation switch 109 to quickly close the grounding switch, when the isolation knife 109 moves When in place, The energy storage spring pushes the shaft 210 against the lower cushion 226 to prevent overshoot, as shown in Fig. 11D. At this time, the energy storage spring 204 is still compressed for a certain length, which provides a certain closing force for the grounding switch.
  • FIG. 12A-12D are schematic diagrams showing the structure of the energy storage unit of the operating mechanism 2 during the opening operation of the grounding switch by the vacuum load switch of the present invention; wherein, in FIG. 12A, the anti-operation interlocking piece is opened, and the operating handle is inserted into the energy storage device.
  • the shaft, FIG. 12B shows the start of the grounding switch opening operation; the energy storage spring shown in FIG. 12C passes the dead center position, and FIG. 12D shows that the limiting plate presses the isolating switch closing half shaft, and the isolating knife gate reaches the isolation position.
  • FIG. 12B shows the start of the grounding switch opening operation
  • FIG. 12C passes the dead center position
  • FIG. 12D shows that the limiting plate presses the isolating switch closing half shaft, and the isolating knife gate reaches the isolation position.
  • the anti-operation interlocking piece 220 is opened.
  • the energy storage plate 211 and the energy storage spring push shaft 210 have a certain distance, if the grounding closing operation end 2272 of the operating handle is inserted, the rotation is limited. , the operation could not be achieved. Therefore, only the isolation operation end 2271 of the operation handle can be inserted into the energy storage shaft 203, and the operation handle 227 can be rotated clockwise.
  • the energy storage plate 211 pushes the notch 2117 against the energy storage spring to push the shaft 210, the grounding switch opening operation starts. .
  • the energy storage spring 204 is slowly compressed and rotated about the energy storage spring support shaft 206, while the energy output shaft 214 slowly drives the isolating blade 109 to move when the energy storage spring 204 passes the dead center position.
  • the energy storage spring pushes the shaft 210 to disengage the energy storage plate 211 to push the notch 2147, and moves forward by the resetting action of the energy storage spring 204, as shown in FIG. 12C, when the limiting plate 215 presses the isolating switch closing half shaft.
  • the motion is stopped, as shown in Fig. 12D, at which time the isolating knife gate 109 reaches the isolated position.
  • FIGS. 13A-13C are schematic views showing the structure of the operating mechanism 2 during the closing operation of the isolating switch of the vacuum load switch of the present invention; wherein, FIG. 13A shows the unlocking switch of the isolating switch, and FIG. 13B shows the closing of the isolating switch. The brake position moves; Figure 13C shows the isolation knife gate reaching the closing position. As shown in FIG. 13A shows the unlocking switch of the isolating switch, and FIG. 13B shows the closing of the isolating switch. The brake position moves; Figure 13C shows the isolation knife gate reaching the closing position. As shown in FIG.
  • the high-voltage main circuit realizes the functions of the load switch, the isolating switch and the grounding switch through the rotary motion of the isolating knife gate and the breaking and closing function of the vacuum interrupter, and cooperates with the function of the control operating mechanism to save the number of the knife gates and The number of operating mechanisms and the size of the load switchgear without sulphur hexafluoride gas is greatly reduced, which saves cost and saves equipment space.

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Abstract

A vacuum load switch, mainly comprising three phases of high-voltage conductive circuits (1) that are independent from each other and are designed consistently, an operating mechanism (2), a supporting box (3) and a transmission device (4). Each phase of high-voltage conductive circuit comprises a load switch unit (10) having a vacuum arc-extinguishing chamber, a disconnecting switch unit (11) and a grounding switch unit (12). The operating mechanism (2) comprises a load switch operating mechanism (20) for controlling the load switch units (10) and a disconnecting and grounding operating mechanism (21) for controlling the disconnecting switch units (11) and the grounding switch units (12). The vacuum load switch further comprises the one-piece supporting box (3) as well as a transmission device (41) for the load switch units (10) and a transmission device (42) for the disconnecting switch units (11) and the grounding switch units (12).

Description

真空负荷开关Vacuum load switch 技术领域Technical field
本发明涉及电力产品和机械技术领域，尤其涉及一种用于中压气体绝缘的真空负荷开关设备。The present invention relates to the field of power products and machinery, and more particularly to a vacuum load switch device for medium voltage gas insulation.
背景技术Background technique
在中国配电网中，尤其是农村配电网，负荷开关(缩写为LBS)广泛应用于二次环网柜单元内，其中大约50％的负荷开关为六氟化硫(SF6)负荷开关，其具有绝缘可靠，设备尺寸小的优点，但对环境不友好；另大约25％的负荷开关为真空负荷开关，其具有绝缘可靠、环境友好的优点，但设备尺寸大。Distribution network in China, especially in rural distribution network, the load switch (abbreviated as LBS) is widely used in the secondary ring counter means, of which approximately 50% of the load switch sulfur hexafluoride (SF 6) load switch It has the advantages of reliable insulation and small size of equipment, but it is not environmentally friendly; another 25% of the load switches are vacuum load switches, which have the advantages of reliable insulation and environmental friendliness, but the size of the equipment is large.
在现有技术中，以六氟化硫为绝缘介质的SF6负荷开关凭借SF6强大的开断与关合能力及绝缘性能，在产品尺寸上可以做得很紧凑，非常适合二次环网柜的空间要求。但随着人们对环境保护的重视，六氟化硫负荷开关因其绝缘介质的对环境不友好的缺点已逐渐被用户所淘汰，每年约有1％的六氟化硫负荷开关被真空负荷开关所取代。而现有技术中的真空负荷开关虽以真空作为开断介质，但其大部分带电部件仍完全暴露于空气中，为达到绝缘可靠的目的，其产品尺寸必须做得很大，在很大程度上造成空间浪费。In the prior art, the SF 6 load switch with sulfur hexafluoride as the insulating medium can be made very compact in terms of product size by virtue of the strong breaking and closing ability and insulation performance of SF 6 , which is very suitable for secondary ring network. The space requirements of the cabinet. However, with the emphasis on environmental protection, the sulphur hexafluoride load switch has been gradually eliminated by users due to its environmentally unfriendly shortcomings. About 1% of the sulphur hexafluoride load switch is vacuum load switch every year. Replaced. However, in the prior art, the vacuum load switch uses vacuum as the breaking medium, but most of its live parts are still completely exposed to the air. To achieve the purpose of insulation reliability, the product size must be made large, to a large extent. This caused a waste of space.
本发明针对现有技术中的缺点和不足，提出一种新的真空负荷开关解决方案。The present invention addresses a shortcoming and deficiencies in the prior art and proposes a new vacuum load switch solution.
发明内容Summary of the invention
本发明针对上述现有的六氟化硫负荷开关和真空负荷开关的缺点和不足，提供一种用于中压气体绝缘的真空负荷开关，包括三相独立且设计相同的高压导电回路、操作机构、支撑箱体及传动装置；其中，每一相高压导电回路包括带真空灭弧室的负荷开关单元、隔离开关单元及接地开关单元；操作机构包括控制负荷开关单元的负荷开关操作机构，与控制隔离开关单元及接地开关单元的隔离接地操作机构；传动装置包括负荷开关单元的负荷开关传动装置及隔离开关单元与接地开关单元的隔离开关传动装置。The present invention is directed to the above-mentioned existing sulphur hexafluoride load switch and vacuum load switch, and provides a vacuum load switch for medium voltage gas insulation, including three-phase independent and identically designed high-voltage conductive circuits and operating mechanisms. Supporting box body and transmission device; wherein each phase high-voltage conductive circuit comprises a load switch unit with a vacuum interrupter, an isolating switch unit and a grounding switch unit; the operating mechanism comprises a load switch operating mechanism for controlling the load switch unit, and controlling The isolating switch unit and the grounding switch unit of the grounding switch unit; the transmission device comprises a load switch transmission device of the load switch unit and an isolating switch transmission device of the isolating switch unit and the grounding switch unit.
根据本发明的最佳实施例，所述每一相高压导电回路包括隔离刀闸、上进线端子、隔离端子、接地端子和接地出线端子；且所述隔离刀闸、上进线端子、隔离端子、接地端子和接地出线端子配置为：隔离刀闸可以连接上进线端子和隔离端子，从而使所述隔离开关单元处于接通状态且接地开关单元处于分闸状态；隔离刀闸可以连接隔离端子和接地端子，从而使所述隔离开关单元处于分闸状态且接地开关单元也处于分闸状态；隔离刀闸可以连接接地端子和接地出线端子，从而使隔离开关单元处于分闸状态且接地开关单元处于合闸状态。According to a preferred embodiment of the present invention, each phase high voltage conductive loop includes an isolating knife gate, an upper incoming terminal, an isolating terminal, a grounding terminal, and a grounding outgoing terminal; and the isolating knife gate, the upper incoming terminal, the isolating terminal, The grounding terminal and the grounding outlet terminal are configured such that the isolating knife gate can be connected to the upper incoming terminal and the isolating terminal, so that the isolating switch unit is in an on state and the grounding switch unit is in an open state; the isolating knife can be connected to the isolating terminal and the grounding a terminal, so that the isolating switch unit is in an open state and the grounding switch unit is also in an open state; the isolating knife gate can be connected to the grounding terminal and the grounding outlet terminal, so that the isolating switch unit is in an open state and the grounding switch unit is in a closed state Brake status.
根据本发明的最佳实施例，所述负荷开关单元包括真空灭弧室、软连接、拉杆组件、密封罩、内密封圈与外密封圈及下出线端子。In accordance with a preferred embodiment of the present invention, the load switch unit includes a vacuum interrupter, a soft connection, a tie rod assembly, a seal cover, an inner seal ring and an outer seal ring, and a lower wire terminal.
根据本发明的最佳实施例，所述隔离开关单元及接地开关单元包括上进线端子、隔离刀闸、刀闸驱动、六方主轴、隔离端子、接地端子、及接地出线端子；其构成隔离开关单元和接地开关单元。According to a preferred embodiment of the present invention, the isolating switch unit and the grounding switch unit comprise an upper incoming terminal, an isolating knife gate, a knife gate drive, a hexagonal spindle, an isolating terminal, a grounding terminal, and a grounding outlet terminal; And grounding switch unit.
根据本发明的最佳实施例，负荷开关单元、隔离开关单元及接地开关单元的导电部件通过环氧树脂壳体固封成一体。 According to a preferred embodiment of the invention, the conductive components of the load switch unit, the isolating switch unit and the grounding switch unit are integrally sealed by an epoxy housing.
根据本发明的最佳实施例，真空负荷开关还包括六方主轴；所述隔离刀闸固定在六方主轴上，并且可以随六方主轴的旋转而转动。In accordance with a preferred embodiment of the present invention, the vacuum load switch further includes a hexagonal spindle; the isolating blade is fixed to the hexagonal spindle and is rotatable with rotation of the hexagonal spindle.
根据本发明的最佳实施例，所述操作机构包括储能单元；用于为接地开关快速合闸提供能量、限位单元，用于真空负荷开关操作过程中起限位作用；和联锁单元，用于防止误操作。所述操作机构还包括支撑板、支撑轴。According to a preferred embodiment of the present invention, the operating mechanism comprises an energy storage unit; for providing energy for fast closing of the grounding switch, a limiting unit for limiting the position during operation of the vacuum load switch; and an interlocking unit For preventing misuse. The operating mechanism further includes a support plate and a support shaft.
所述储能单元包括储能轴、储能弹簧、储能弹簧支撑板、储能弹簧支撑轴、间隔套、储能弹簧导向板、储能弹簧导向轴套、储能弹簧推动轴、储能板、储能板支撑轴、弹簧输出杠杆、能量输出轴；各部件顺序连接。The energy storage unit comprises an energy storage shaft, an energy storage spring, an energy storage spring support plate, an energy storage spring support shaft, a spacer sleeve, an energy storage spring guide plate, an energy storage spring guiding bushing, an energy storage spring pushing shaft, and energy storage. Plate, energy storage plate support shaft, spring output lever, energy output shaft; each component is connected in sequence.
根据本发明的最佳实施例，所述限位单元包括限位板、隔离开关合闸半轴、半轴限位器和半轴复位弹簧；各部件顺序连接。According to a preferred embodiment of the present invention, the limiting unit comprises a limiting plate, an isolating switch closing half shaft, a half shaft limiting device and a half shaft return spring; the components are sequentially connected.
所述联锁单元包括联锁支架、防操联锁片、防操联锁片导向套、隔离限位销、隔离限位销复位弹簧、隔离开关合闸旋钮、上缓冲垫、下缓冲垫；各部件顺序连接。The interlocking unit comprises an interlocking bracket, an anti-operation interlocking piece, an anti-operation interlocking piece guiding sleeve, an isolation limiting pin, an isolation limiting pin return spring, an isolating switch closing knob, an upper cushion and a lower cushion; The parts are connected in sequence.
根据本发明的最佳实施例，环氧树脂壳体前后另装配有前端盖及后端盖，用于提高爬电距离及绝缘性能。所述前端盖及后端盖上开有观察窗。According to a preferred embodiment of the present invention, the epoxy resin housing is additionally equipped with a front end cover and a rear end cover for improving creepage distance and insulation performance. The front end cover and the rear end cover are provided with an observation window.
根据本发明的最佳实施例，所述操作机构还包括操作手柄，其可带动储能轴。According to a preferred embodiment of the invention, the operating mechanism further includes an operating handle that can drive the energy storage shaft.
本发明的真空负荷开关，通过隔离刀闸的旋转运动与真空灭弧室的开断和关合功能，在一个部件内实现了负荷开关、隔离开关及接地开关 三个功能，配合控制操作机构的功能，节省了刀闸数量和操作机构的数量，并且大大地降低了不带六氟化硫气体的负荷开关设备的空间尺寸，即节省了成本又节省设备占地空间。The vacuum load switch of the invention realizes the load switch, the isolating switch and the grounding switch in one component by the rotary motion of the isolating knife gate and the breaking and closing function of the vacuum interrupter Three functions, combined with the function of the control operating mechanism, save the number of knife gates and the number of operating mechanisms, and greatly reduce the space size of the load switch device without sulfur hexafluoride gas, which saves cost and saves equipment Ground space.
附图说明DRAWINGS
图1A-1B所示为本发明的中压气体绝缘真空负荷开关的结构图，其中图1A为整体结构图，图1B为内部结构图；1A-1B are structural views of a medium voltage gas insulated vacuum load switch of the present invention, wherein FIG. 1A is an overall structural view, and FIG. 1B is an internal structural view;
图2A-2C是本发明的真空负荷开关，在不同状态时的整体结构示意图；其中，图2A是真空负荷开关处于接通状态时整体结构示意图；图2B是真空负荷开关处于隔离状态时整体结构示意图；图2C是真空负荷开关处于接地状态时整体结构示意图；2A-2C are schematic diagrams showing the overall structure of the vacuum load switch of the present invention in different states; wherein, FIG. 2A is a schematic view of the overall structure when the vacuum load switch is in an on state; and FIG. 2B is an overall structure when the vacuum load switch is in an isolated state. Schematic; FIG. 2C is a schematic view of the overall structure when the vacuum load switch is in a grounded state;
图3A-3C是本发明的真空负荷开关，在不同状态时高压主回路的隔离开关单元和接地开关单元的结构示意图；其中，图3A是真空负荷开关处于接通状态时，隔离开关单元和接地开关单元的结构示意图；图3B是真空负荷开关处于隔离状态时，隔离开关单元和接地开关单元的结构示意图；图3C是真空负荷开关处于接地状态时，隔离开关单元和接地开关单元的结构示意图；3A-3C are schematic diagrams showing the structure of an isolating switch unit and a grounding switch unit of a high voltage main circuit in a vacuum load switch of the present invention; wherein, FIG. 3A is an isolating switch unit and a ground when the vacuum load switch is in an on state. FIG. 3B is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in an isolated state; FIG. 3C is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in a grounded state;
图4A-4C是本发明的真空负荷开关，在不同状态时的操作机构的结构示意图；其中，图4A是真空负荷开关处于接通状态时操作机构的结构示意图；图4B是真空负荷开关处于隔离状态时操作机构的结构示意图；图4C是真空负荷开关处于接地状态时操作机构的结构示意图；4A-4C are schematic structural views of the operating mechanism of the vacuum load switch of the present invention in different states; wherein, FIG. 4A is a schematic structural view of the operating mechanism when the vacuum load switch is in an ON state; FIG. 4B is a vacuum load switch in isolation. Schematic diagram of the operating mechanism in the state; FIG. 4C is a schematic structural view of the operating mechanism when the vacuum load switch is in the grounding state;
图5A-5C是本发明的真空负荷开关，在不同状态时的单线图；其中，图5A是本发明的真空负荷开关处于运行状态的单线图，图5B是本发明的真空负荷开关处于隔离状态的单线图，图5C是本本发明的真空负 荷开关处于接地状态的单线图；5A-5C are single line diagrams of the vacuum load switch of the present invention in different states; wherein, FIG. 5A is a one-line diagram of the vacuum load switch of the present invention in an operating state, and FIG. 5B is a vacuum load switch of the present invention in an isolated state. One-line diagram, Figure 5C is the vacuum negative of the present invention a one-line diagram of the load switch being grounded;
图6、图6A-6C是本发明的真空负荷开关的高压主回路结构示意图；图6A-6C还分别示出了，本发明的真空负荷开关的高压主回路，在真空负荷开关处于接通状态、处于隔离状态和处于接地状态时的高压主回路结构；6 and 6A-6C are schematic views showing the structure of a high-voltage main circuit of the vacuum load switch of the present invention; and FIGS. 6A-6C also respectively show the high-voltage main circuit of the vacuum load switch of the present invention, in which the vacuum load switch is turned on. High voltage main circuit structure in isolated state and in grounded state;
图7A是本发明的真空负荷开关作为进线柜使用时，处于运行状态的单线图，图7B是本发明的真空负荷开关作为进线柜使用时，处于隔离状态的单线图；7A is a one-line diagram of the vacuum load switch of the present invention in an operating state when used as an inlet cabinet, and FIG. 7B is a one-line diagram of the vacuum load switch of the present invention in an isolated state when used as an inlet cabinet;
图8A-8B对应于图7A-7B，是本发明的真空负荷开关作为进线柜使用时，负荷开关单元和隔离开关单元的结构示意图；其中，图8A是处于运行状态，图8B是处于隔离状态；8A-8B are corresponding to FIG. 7A-7B, which are schematic structural diagrams of a load switch unit and an isolating switch unit when the vacuum load switch of the present invention is used as an inlet cabinet; wherein, FIG. 8A is in an operating state, and FIG. 8B is in an isolated state. status;
图9A为高压主回路隔离开关合闸状态对应操作机构的示意图，图9B为高压主回路隔离开关分闸状态对应操作机构的示意图；图9C是图9A的左右方向剖视图，图9D是9A的内外方向剖视图，图9E是操作手柄结构示意图；9A is a schematic view of the operating mechanism corresponding to the closing state of the high-voltage main circuit isolating switch, and FIG. 9B is a schematic view of the operating mechanism corresponding to the opening state of the high-voltage main circuit isolating switch; FIG. 9C is a cross-sectional view of the left and right direction of FIG. 9A, and FIG. A cross-sectional view of the direction, and FIG. 9E is a schematic structural view of the operating handle;
图10A-10C是本发明的真空负荷开关实现隔离开关分闸操作过程中，操作机构结构示意图；其中，图10A所示为隔离刀闸从合闸位置向分闸位置转动，图10B所示为隔离开关保持在分闸位置，图10C所示为防止因储能手柄未拔出而进行隔离开关合闸操作；10A-10C are schematic views showing the structure of the operating mechanism during the opening operation of the isolation switch by the vacuum load switch of the present invention; wherein, FIG. 10A shows the rotation of the isolation knife gate from the closing position to the opening position, as shown in FIG. 10B. The isolating switch is kept in the opening position, and FIG. 10C is shown to prevent the disconnecting switch from being closed due to the unloading of the energy storage handle;
图11A-11D是本发明的真空负荷开关实现接地开关快速合闸操作过程中，操作机构结构示意图；其中，图11A所示为打开防操联锁片开始接地开关快速合闸操作，图11B所示为限位销上的缺口可以让位储能板转动，图11C所示为在储能弹簧复位的作用下杠杆带动能量输出轴转动，图11D所示为实现接地开关快速合闸； 11A-11D are schematic diagrams showing the structure of the operating mechanism during the fast closing operation of the grounding switch by the vacuum load switch of the present invention; wherein, FIG. 11A shows the opening of the anti-operation interlocking piece to start the grounding switch quick closing operation, FIG. 11B The notch on the limit pin can make the position energy storage plate rotate. Figure 11C shows that the lever drives the energy output shaft to rotate under the action of the energy storage spring reset. Figure 11D shows the ground switch quick closing;
图12A-12D是本发明的真空负荷开关实现接地开关分闸操作过程中，操作机构的储能单元结构示意图；其中，图12A所示为打开防操联锁片，把操作手柄插入储能轴，图12B所示为接地开关分闸操作开始；图12C所示储能弹簧通过死点位置，图12D是为限位板压住隔离开关合闸半轴，隔离刀闸到达隔离位置；12A-12D are schematic diagrams showing the structure of the energy storage unit of the operating mechanism during the operation of the grounding switch opening operation of the vacuum load switch of the present invention; wherein, in FIG. 12A, the anti-operation interlocking piece is opened, and the operating handle is inserted into the energy storage shaft. Figure 12B shows the start of the grounding switch opening operation; the energy storage spring shown in Figure 12C passes the dead point position, Figure 12D shows the limit plate pressing the isolation switch closing half shaft, and the isolation knife gate reaches the isolation position;
图13A-13C是本发明的真空负荷开关实现隔离开关合闸操作过程中，操作机构结构示意图；其中，图13A所示为解锁隔离开关合闸旋钮，图13B所示为隔离刀闸向合闸位置运动；图13C所示为隔离刀闸到达合闸位置。13A-13C are schematic diagrams showing the structure of the operating mechanism during the closing operation of the vacuum switch of the vacuum load switch of the present invention; wherein, FIG. 13A shows the unlocking switch of the isolating switch, and FIG. 13B shows the closing of the isolating switch. Position movement; Figure 13C shows the isolation knife gate reaching the closing position.
具体实施方式detailed description
以下参考附图，给出了本发明的可选实施方式的具体描述。A detailed description of alternative embodiments of the present invention is given below with reference to the accompanying drawings.
如图1A-1B所示为本发明的用于中压气体绝缘真空负荷开关的结构图，其中图1A为整体结构图，图1B为内部结构图。该开关设备主要包括三相独立且设计相同的高压导电回路1、操作机构2、支撑箱体3及传动装置4；每一相高压导电回路1包括带真空灭弧室的负荷开关单元10、隔离开关单元11及接地开关单元12；操作机构2包括控制负荷开关单元10的负荷开关操作机构20，与控制隔离开关单元11及接地开关单元12的隔离接地操作机构21；传动装置4包括负荷开关单元10的负荷开关传动装置41及隔离开关单元11与接地开关单元12的隔离开关传动装置42。1A-1B is a structural view of a medium voltage gas insulated vacuum load switch of the present invention, wherein FIG. 1A is an overall structural view, and FIG. 1B is an internal structural view. The switch device mainly comprises a three-phase independent and identically designed high-voltage conductive circuit 1, an operating mechanism 2, a support box 3 and a transmission device 4; each phase of the high-voltage conductive circuit 1 comprises a load switch unit 10 with a vacuum interrupter, and isolation The switch unit 11 and the grounding switch unit 12; the operating mechanism 2 includes a load switch operating mechanism 20 for controlling the load switch unit 10, and an isolated ground operating mechanism 21 for controlling the isolating switch unit 11 and the grounding switch unit 12; the transmission device 4 includes a load switch unit The load switch transmission 41 of the 10 and the isolating switch unit 42 of the isolating switch unit 11 and the grounding switch unit 12.
如图1A-1B、图6和图6A-6C所示，每一相高压导电回路1包括隔离刀闸109、上进线端子108、隔离端子112、接地端子113和接地出线端子114；且所述隔离刀闸109、上进线端子108、隔离端子112、接地端子113和接地出线端子114配置为： As shown in FIGS. 1A-1B, 6 and 6A-6C, each phase of the high voltage conductive loop 1 includes an isolating blade 109, an upper incoming terminal 108, an isolated terminal 112, a grounding terminal 113, and a grounded outgoing terminal 114; The isolating blade 109, the upper incoming terminal 108, the isolated terminal 112, the grounding terminal 113, and the grounded outgoing terminal 114 are configured to:
隔离刀闸109可以连接上进线端子108和隔离端子112，从而使所述隔离开关单元11处于接通状态且接地开关单元12处于分闸状态；隔离刀闸109可以连接隔离端子112和接地端子113，从而使所述隔离开关单元11处于分闸状态且接地开关单元12也处于分闸状态；隔离刀闸109可以连接接地端子113和接地出线端子114，从而使隔离开关单元11处于分闸状态且接地开关单元12处于合闸状态。The isolating blade 109 can be connected to the upper incoming terminal 108 and the isolated terminal 112 such that the isolating switch unit 11 is in an on state and the grounding switch unit 12 is in an open state; the isolating blade 109 can be connected to the isolating terminal 112 and the grounding terminal 113. So that the isolating switch unit 11 is in the open state and the grounding switch unit 12 is also in the open state; the isolating blade 109 can be connected to the grounding terminal 113 and the grounding outlet terminal 114, so that the isolating switch unit 11 is in the open state and The grounding switch unit 12 is in a closed state.
下面结合具体的功能实现操作过程，更详细的介绍本发明的用于中压气体绝缘真空负荷开关具体结构，尤其是高压导电回路1和操作机构2的详细结构。The specific structure of the medium-pressure gas-insulated vacuum load switch of the present invention, in particular, the detailed structure of the high-voltage conductive circuit 1 and the operating mechanism 2, will be described in more detail below with reference to specific functions.
图2A-2C是本发明的真空负荷开关，在不同状态时的整体结构示意图；其中，图2A是真空负荷开关处于接通状态时整体结构示意图；图2B是真空负荷开关处于隔离状态时整体结构示意图；图2C是真空负荷开关处于接地状态时整体结构示意图；2A-2C are schematic diagrams showing the overall structure of the vacuum load switch of the present invention in different states; wherein, FIG. 2A is a schematic view of the overall structure when the vacuum load switch is in an on state; and FIG. 2B is an overall structure when the vacuum load switch is in an isolated state. Schematic; FIG. 2C is a schematic view of the overall structure when the vacuum load switch is in a grounded state;
图3A-3C是本发明的真空负荷开关，在不同状态时的高压主回路的隔离开关单元和接地开关单元的结构示意图；其中，图3A是真空负荷开关处于接通状态时，隔离开关单元和接地开关单元的结构示意图；图3B是真空负荷开关处于隔离状态时，隔离开关单元和接地开关单元的结构示意图；图3C是真空负荷开关处于接地状态时，隔离开关单元和接地开关单元的结构示意图；3A-3C are schematic diagrams showing the structure of an isolating switch unit and a grounding switch unit of a high voltage main circuit in a vacuum load switch of the present invention; wherein, FIG. 3A is an isolating switch unit when the vacuum load switch is in an on state; Schematic diagram of the grounding switch unit; FIG. 3B is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in an isolated state; FIG. 3C is a schematic structural view of the isolating switch unit and the grounding switch unit when the vacuum load switch is in a grounded state ;
图4A-4C是本发明的真空负荷开关，在不同状态时的操作机构2的结构示意图；其中，图4A是真空负荷开关处于接通状态时操作机构2的结构示意图；图4B是真空负荷开关处于隔离状态时操作机构2的结构示意图；图4C是真空负荷开关处于接地状态时操作机构2的结构示意图； 4A-4C are schematic structural views of the operating mechanism 2 of the vacuum load switch of the present invention in different states; wherein, FIG. 4A is a schematic structural view of the operating mechanism 2 when the vacuum load switch is in an ON state; FIG. 4B is a vacuum load switch. FIG. 4C is a schematic structural view of the operating mechanism 2 when the vacuum load switch is in a grounded state; FIG.
首先，当本发明的真空负荷开关作为出线柜使用时，其需要具备负荷开关功能、隔离开关功能及接地开关功能；出现柜的单线图在各种工作状态，如图5A-5C是本发明的真空负荷开关，在不同状态时的单线图；其中，图5A是本发明的真空负荷开关处于运行状态的单线图，图5B是本发明的真空负荷开关处于隔离状态的单线图，图5C是本本发明的真空负荷开关处于接地状态的单线图； First, when the vacuum load switch of the present invention is used as a outlet cabinet , it needs to have a load switch function, an isolating switch function, and a grounding switch function; a single line diagram of the cabinet appears in various working states, as shown in FIGS. 5A-5C. FIG. 5A is a one-line diagram of the vacuum load switch of the present invention in an operating state, and FIG. 5B is a one-line diagram of the vacuum load switch of the present invention in an isolated state, and FIG. 5C is a book; A one-line diagram of the inventive vacuum load switch in a grounded state;
采用本发明的高压导电回路的真空负荷开关作为出线柜使用时，其可满足出线柜单线图所要求的各种工作状态，其工作原理如下：When the vacuum load switch of the high-voltage conductive circuit of the invention is used as the outlet cabinet, it can satisfy various working states required by the single-line diagram of the outlet cabinet, and the working principle is as follows:
如图1A-1B、图6和图6A-6C所示，每一相的高压主回路1由负荷开关单元10、隔离开关单元11及接地开关单元12组成，其中，真空灭弧室101、软连接102、拉杆组件103、密封罩104、内密封圈105与外密封圈106、及下出线端子107构成了负荷开关单元；上进线端子108、隔离刀闸109、刀闸驱动110、六方主轴111、隔离端子112、接地端子113、及接地出线端子114构成了隔离开关单元与接地开关单元。三个单元的主要导电部件及固定嵌件115通过环氧树脂壳体116固封成一体，环氧树脂壳体116上设置有锯齿状的凹槽，用于增加带电体间的爬电距离，并且环氧树脂壳体116前后另装配有前端盖117及后端盖118，用于提高爬电距离及绝缘性能，前后端盖上均开有观察窗分别为前端盖上的观察窗1170和后端盖上的观察窗1180，用于观察隔离刀闸109位置。隔离刀闸109包括两个刀片，两个刀片装配在刀闸驱动装置110上，并通过刀闸驱动装置110固定在六方主轴111上。As shown in FIGS. 1A-1B, 6 and 6A-6C, the high voltage main circuit 1 of each phase is composed of a load switch unit 10, an isolating switch unit 11 and a grounding switch unit 12, wherein the vacuum interrupter 101 is soft. The connection 102, the tie rod assembly 103, the sealing cover 104, the inner seal ring 105 and the outer seal ring 106, and the lower outlet terminal 107 constitute a load switch unit; an upper feed terminal 108, an isolating knife gate 109, a knife gate drive 110, and a hexagonal spindle 111 The isolation terminal 112, the ground terminal 113, and the ground outlet terminal 114 constitute an isolation switch unit and a ground switch unit. The main conductive member and the fixed insert 115 of the three units are integrally sealed by the epoxy housing 116, and the epoxy housing 116 is provided with a zigzag groove for increasing the creepage distance between the charged bodies. The epoxy resin housing 116 is further equipped with a front end cover 117 and a rear end cover 118 for improving the creepage distance and the insulation performance. The front and rear end covers are respectively provided with observation windows respectively for the observation window 1170 on the front end cover and the rear. An observation window 1180 on the end cap is used to observe the position of the isolation knife gate 109. The isolating knife gate 109 includes two blades, and the two blades are mounted on the knife gate driving device 110 and are fixed to the hexagonal spindle 111 by the knife gate driving device 110.
图6A-6C还分别示出了，本发明的真空负荷开关的高压主回路，在真空负荷开关处于接通状态、处于隔离状态和处于接地状态时的高压主回路结构。本真空负荷开关设备利用了高压主回路1的隔离刀闸109绕着六方主轴111旋转时处于不同位置来分别实现接通状态、隔离状态及 接地状态。当隔离刀闸109处于图6A所示左侧时，其连接着上进线端子108与隔离端子112，此时隔离开关单元处于接通状态且接地开关单元处于分闸状态，当负荷开关单元也处于合闸状态时，本真空负荷开关设备处于运行状态，实现了图5A单线图的功能要求；当隔离刀闸109处于图6B所示下侧时，其连接着隔离端子112与接地端子113，此时隔离开关单元处于分闸状态且接地开关单元也处于分闸状态，当负荷开关单元也处于分闸状态时，本真空负荷开关设备处于隔离状态，实现了图5B单线图的功能要求；当隔离刀闸109处于图6C所示右侧时，其连接着接地端子113与接地出线端子114，此时隔离开关单元处于分闸状态且接地开关单元处于合闸状态，接地端子113通过软连接102将电缆侧接地，本发明的真空负荷开关设备处于接地状态，实现了图5C单线图的功能要求。6A-6C also illustrate the high voltage main circuit configuration of the high voltage main circuit of the vacuum load switch of the present invention when the vacuum load switch is in an on state, in an isolated state, and in a grounded state. The vacuum load switch device utilizes the isolating knife gate 109 of the high-voltage main circuit 1 to rotate at a different position around the hexagonal main shaft 111 to realize the on-state and the isolation state, respectively. Grounded state. When the isolating blade 109 is on the left side shown in FIG. 6A, it is connected to the upper incoming terminal 108 and the isolated terminal 112. At this time, the isolating switch unit is in the on state and the grounding switch unit is in the open state, when the load switch unit is also in the When the switch is in the closed state, the vacuum load switch device is in the running state, and the function requirement of the one-line diagram of FIG. 5A is realized; when the isolating blade 109 is on the lower side shown in FIG. 6B, the isolation terminal 112 and the ground terminal 113 are connected, When the isolating switch unit is in the open state and the grounding switch unit is also in the open state, when the load switch unit is also in the open state, the vacuum load switch device is in an isolated state, realizing the functional requirement of the single line diagram of FIG. 5B; When the knife gate 109 is on the right side shown in FIG. 6C, it is connected to the grounding terminal 113 and the grounding outlet terminal 114. At this time, the isolating switch unit is in the open state and the grounding switch unit is in the closing state, and the grounding terminal 113 is connected through the soft connection 102. The cable side is grounded, and the vacuum load switch device of the present invention is in a grounded state, realizing the functional requirements of the one-line diagram of FIG. 5C.
其次，当本发明的真空负荷开关作为进线柜使用时，其需要具备负荷开关功能与隔离开关功能，接地功能为可选选项。下述均为进线柜不带接地功能，若客户选择带接地功能则参考第一最佳实例描述。下图示意出不带接地功能的进线柜的单线图在各种工作状态，图7A所示是本发明的真空负荷开关作为进线柜使用时，处于运行状态的单线图，图7B是本发明的真空负荷开关作为进线柜使用时，处于隔离状态的单线图。 Secondly, when the vacuum load switch of the present invention is used as an inlet cabinet , it needs to have a load switch function and an isolation switch function, and the ground function is an optional option. The following are the inlet cabinets without grounding function. If the customer chooses to have the grounding function, refer to the first best example description. The following figure shows the single line diagram of the incoming line cabinet without grounding function in various working states. Figure 7A shows the single line diagram of the vacuum load switch of the present invention when it is used as the incoming line cabinet. Figure 7B is the same. When the vacuum load switch of the invention is used as an inlet cabinet, it is in a single line diagram in an isolated state.
采用本发明的高压导电回路的真空负荷开关作为进线柜使用时，其可满足进线柜单线图所要求的各种工作状态，其工作原理如下：When the vacuum load switch of the high-voltage conductive circuit of the invention is used as the inlet cabinet, it can satisfy various working states required by the single-line diagram of the inlet cabinet, and the working principle is as follows:
图8A-8B对应于图7A-7B，是本发明的真空负荷开关作为进线柜使用时，负荷开关单元和隔离开关单元的结构示意图；其中，图8A是处于运行状态，图8B是处于隔离状态。结合如图1A-1B、图6和图6A-6C所示的结构示意图，本真空负荷开关设备利用了高压主回路1的隔离刀闸109绕着六方主轴111旋转时处于不同位置来分别实现接通状态及隔 离状态。当隔离刀闸109处于图8A所示左侧时，其连接着上进线端子108与隔离端子112，此时隔离开关单元处于接通状态，当负荷开关单元也处于合闸状态时，本真空负荷开关设备处于运行状态，实现了图7A单线图的功能要求；当隔离刀闸109处于图8B所示下侧时，其连接着隔离端子112与支撑端子119，此时隔离开关单元处于分闸状态，当负荷开关单元也处于分闸状态时，本真空负荷开关设备处于隔离状态，实现了图7B单线图的功能要求。8A-8B are corresponding to FIG. 7A-7B, which are schematic structural diagrams of a load switch unit and an isolating switch unit when the vacuum load switch of the present invention is used as an inlet cabinet; wherein, FIG. 8A is in an operating state, and FIG. 8B is in an isolated state. status. 1A-1B, FIG. 6 and FIG. 6A-6C, the vacuum load switching device utilizes the isolating knife gate 109 of the high-voltage main circuit 1 to rotate at a different position around the hexagonal main shaft 111 to realize the connection. Pass state From the state. When the isolating blade 109 is on the left side shown in FIG. 8A, it is connected to the upper incoming terminal 108 and the isolated terminal 112. At this time, the isolating switch unit is in an on state, and when the load switch unit is also in the closed state, the vacuum load is applied. The switch device is in the running state, and realizes the functional requirement of the one-line diagram of FIG. 7A; when the isolating knife gate 109 is on the lower side shown in FIG. 8B, it is connected with the isolation terminal 112 and the support terminal 119, and the isolation switch unit is in the open state. When the load switch unit is also in the open state, the vacuum load switch device is in an isolated state, realizing the functional requirements of the one-line diagram of FIG. 7B.
作为配合高压主回路1使用的操作机构2，应能满足其全部功能要求。以下描述将结合附图说明操作机构2的结构、所实现的功能及工作原理。As the operating mechanism 2 used in conjunction with the high-pressure main circuit 1, it should be able to satisfy all of its functional requirements. The following description will explain the structure, function and operation of the operating mechanism 2 with reference to the drawings.
图9A为高压主回路1隔离开关合闸状态对应操作机构2的示意图，图9B为高压主回路1隔离开关分闸状态对应操作机构2的示意图；图9C是图9A的左右方向剖视图，图9D是9A的内外方向剖视图，图9E是操作手柄结构示意图。高压主回路1的控制操作机构2包括储能单元，用于为接地开关快速合闸提供能量；限位单元，用于真空负荷开关操作过程中起限位作用；和联锁单元，用于防止误操作；各部件如图中所示顺序连接。还包括支撑板201、支撑轴202，二者构成基本框架；储能轴203、储能弹簧204、储能弹簧支撑板205、储能弹簧支撑轴206、间隔套207、储能弹簧导向板208、储能弹簧导向轴套209、储能弹簧推动轴210、储能板211、储能板支撑轴212、弹簧输出杠杆213、能量输出轴214等零部件；各部件如图中所示顺序连接构成了储能单元，为接地开关快速合闸提供能量。限位板215、隔离开关合闸半轴216、半轴限位器217、半轴复位弹簧218等；各部件如图中所示顺序连接构成了控制隔离开关的限位单元；联锁支架219、防操联锁片220、防操联锁片导向套221、隔离限位销222、隔离限位销复位弹簧223、隔离开关合闸 旋钮224、上缓冲垫225、下缓冲垫226等；各部件如图中所示顺序连接构成了联锁单元，防止误操作。操作机构2配套一特殊操作手柄227可带动储能轴203运动进行储能并实现高压主回路1的隔离刀闸运动。操作机构2的能量输出轴214与高压主回路1的六方主轴111直接连接，实现从操作机构2到高压主回路1的运动传递。9A is a schematic view of the high-pressure main circuit 1 isolating switch closing state corresponding to the operating mechanism 2, FIG. 9B is a schematic view of the high-pressure main circuit 1 isolating switch opening state corresponding to the operating mechanism 2; FIG. 9C is a left-right cross-sectional view of FIG. 9A, FIG. 9D It is a sectional view of the inner and outer directions of 9A, and FIG. 9E is a schematic structural view of the operation handle. The control operating mechanism 2 of the high-voltage main circuit 1 includes an energy storage unit for providing energy for fast closing of the grounding switch; a limiting unit for limiting the position during operation of the vacuum load switch; and an interlocking unit for preventing Misoperation; the components are connected in the order shown in the figure. The support plate 201 and the support shaft 202 further comprise a basic frame; the energy storage shaft 203, the energy storage spring 204, the energy storage spring support plate 205, the energy storage spring support shaft 206, the spacer sleeve 207, and the energy storage spring guide plate 208. The energy storage spring guiding bushing 209, the energy storage spring pushing shaft 210, the energy storage plate 211, the energy storage plate supporting shaft 212, the spring output lever 213, the energy output shaft 214 and the like; the components are sequentially connected as shown in the figure. It constitutes the energy storage unit and provides energy for the grounding switch to quickly close. The limiting plate 215, the isolating switch closing half shaft 216, the half shaft limiting device 217, the half shaft return spring 218, etc.; the components are sequentially connected as shown in the figure to form a limiting unit for controlling the isolating switch; the interlock bracket 219 , anti-operation interlocking piece 220, anti-operation interlocking piece guiding sleeve 221, isolation limit pin 222, isolation limit pin return spring 223, isolation switch closing Knob 224, upper cushion 225, lower cushion 226, etc.; the components are sequentially connected as shown in the figure to form an interlocking unit to prevent erroneous operation. The operating mechanism 2 is equipped with a special operating handle 227 to drive the energy storage shaft 203 to perform energy storage and realize the isolation knife movement of the high pressure main circuit 1. The energy output shaft 214 of the operating mechanism 2 is directly connected to the hexagonal spindle 111 of the high pressure main circuit 1 to realize the motion transmission from the operating mechanism 2 to the high pressure main circuit 1.
高压主回路1的运动过程为隔离开关闭合，隔离开关分闸，接地开关合闸，接地开关分闸，隔离开关闭合的一个循环过程，其中隔离开关闭合时还要求一定的闭合力，防止隔离刀闸109与上进线端子108因电动力分离，另要求接地开关合闸动作必须快速运动，以达到关合短路故障电流的要求。下述将结合操作机构2的附图说明其功能原理及如何满足高压主回路1的运动过程。The movement process of the high-pressure main circuit 1 is a closed switch of the isolating switch, the opening of the isolating switch, the closing of the grounding switch, the opening of the grounding switch, and the closing of the isolating switch. The closing switch also requires a certain closing force to prevent the isolating knife. The gate 109 and the upper incoming terminal 108 are separated by electric power, and the grounding switch closing action must be quickly moved to meet the requirement of closing the short circuit fault current. The functional principle of the operation mechanism 2 and how to satisfy the movement process of the high-pressure main circuit 1 will be described below in conjunction with the drawings of the operating mechanism 2.
首先，保持隔离开关合闸时所需的闭合力。如图9A所示为操作机构2在隔离开关合闸状态下对应的状态，此时储能弹簧204被预压缩后可提供一定的力通过能量输出轴214传递至隔离刀闸109，防止隔离刀闸109与上进线端子108因电动力作用而分离，同时，上缓冲垫225顶住储能弹簧推动轴210，防止弹簧复位。First, keep the closing force required to close the isolation switch. As shown in FIG. 9A, the operating mechanism 2 is in a corresponding state in the closed state of the isolating switch. At this time, the energy storage spring 204 is pre-compressed to provide a certain force to be transmitted through the energy output shaft 214 to the isolating blade 109 to prevent the isolating blade. The gate 109 and the upper incoming terminal 108 are separated by electrodynamic force, and the upper cushion 225 is pressed against the energy storage spring to urge the shaft 210 to prevent the spring from being reset.
第二，实现隔离开关分闸操作，即隔离刀闸109从合闸位置运动到分闸位置。图10A-10C是本发明的真空负荷开关实现隔离开关分闸操作过程中，操作机构2结构示意图；其中，图10A所示为隔离刀闸从合闸位置向分闸位置转动，图10B所示为隔离开关保持在分闸位置，图10C所示为防止因储能手柄未拔出而进行隔离开关合闸操作。打开防操联锁片220，把操作手柄的隔离操作端2271插入储能轴203，并逆时针转动。操作手柄的接地合闸操作端2272无法插入，因为限位板215将挡住隔离限位销222向内移动。如图10A所示，储能弹簧204在储能弹簧推动轴210和储能板211的作用下继续被压缩，同时弹簧输出杠杆213带动 能量输出轴214逆时针转动，从而带动隔离刀闸109从合闸位置向分闸位置转动。在转动过程中，限位板215的斜面2153会带动隔离开关合闸半轴216顺时针打开，从而限位板215可通过合闸半轴216。当储能板211的圆弧凹面2114顶住隔离限位销222时，储能手柄227的逆时针转动被限制，此时合闸半轴216与限位板215存在一定间隙，如图10B所示，当操作手柄227拔出后，在储能弹簧204的复位作用下，限位板215顺时针转动压住合闸半轴216，同时储能板211凹面与隔离限位销222脱开，此时隔离开关保持在分闸位置。在防操联锁片220打开的状态下，其U型槽2205将卡住隔离开关合闸旋钮224，如图10C所示，防止因储能手柄227未拔出而进行隔离开关合闸操作伤及人身安全。Secondly, the isolation switch opening operation is realized, that is, the isolation knife gate 109 moves from the closing position to the opening position. 10A-10C are schematic views showing the structure of the operating mechanism 2 during the opening operation of the isolation switch by the vacuum load switch of the present invention; wherein, FIG. 10A shows the rotation of the isolation knife gate from the closing position to the opening position, as shown in FIG. 10B. In order to keep the isolating switch in the opening position, FIG. 10C shows that the isolating switch closing operation is prevented because the energy storage handle is not pulled out. The anti-operation interlocking piece 220 is opened, and the isolation operating end 2271 of the operating handle is inserted into the energy storage shaft 203 and rotated counterclockwise. The ground closing operation end 2272 of the operating handle cannot be inserted because the limiting plate 215 will block the isolation limiting pin 222 from moving inward. As shown in FIG. 10A, the energy storage spring 204 continues to be compressed by the energy storage spring pushing shaft 210 and the energy storage plate 211, while the spring output lever 213 drives The energy output shaft 214 rotates counterclockwise to drive the isolating knife gate 109 to rotate from the closing position to the opening position. During the rotation, the inclined surface 2153 of the limiting plate 215 drives the isolating switch closing half shaft 216 to open clockwise, so that the limiting plate 215 can pass through the closing half shaft 216. When the arcuate concave surface 2114 of the energy storage plate 211 is against the isolation limit pin 222, the counterclockwise rotation of the energy storage handle 227 is restricted. At this time, there is a certain gap between the closing half shaft 216 and the limiting plate 215, as shown in FIG. 10B. After the operation handle 227 is pulled out, under the reset action of the energy storage spring 204, the limiting plate 215 rotates clockwise to press the closing half shaft 216, and the concave surface of the energy storage plate 211 is disengaged from the isolation limiting pin 222. At this point the isolating switch remains in the open position. When the anti-operation interlocking piece 220 is opened, the U-shaped groove 2205 will catch the isolating switch closing knob 224, as shown in FIG. 10C, preventing the isolation switch closing operation from being damaged due to the unloading of the energy storage handle 227. And personal safety.
第三，实现接地开关快速合闸操作，即隔离刀闸109从隔离位置快速运动到接地位置。图11A-11D是本发明的真空负荷开关实现接地开关快速合闸操作过程中，操作机构2结构示意图；其中，图11A所示为打开防操联锁片开始接地开关快速合闸操作，图11B所示为限位销上的缺口可以让位储能板转动，图11C所示为在储能弹簧复位的作用下杠杆带动能量输出轴转动，图11D所示为实现接地开关快速合闸。打开防操联锁片220，把操作手柄的接地合闸操作端2272插入储能轴203，此时操作手柄的接地合闸操作端2272销子将按压隔离限位销222，因限位板215已经逆时针转动一定角度，不再挡住隔离限位销222，如图11A所示。此时限位销222上的缺口2226可以让位储能板211转动，如图11B所示。逆时针转动操作手柄227，储能弹簧204继续被压缩，并且绕着储能弹簧支撑轴206转动，当储能弹簧204通过死点位置后，储能弹簧推动轴210脱开储能板211推动凹口2115，如图11C所示，在储能弹簧204复位的作用下，弹簧输出杠杆213快速带动能量输出轴214转动，从而实现隔离刀闸109快速合闸接地开关，当隔离刀闸109运动到位时， 储能弹簧推动轴210被下缓冲垫226顶住，防止过冲，如图11D所示。此时储能弹簧204仍被压缩一定长度，为接地开关提供了一定的闭合力。Third, the grounding switch is quickly closed, that is, the isolating knife 109 is quickly moved from the isolated position to the grounded position. 11A-11D are schematic views showing the structure of the operating mechanism 2 during the rapid closing operation of the grounding switch by the vacuum load switch of the present invention; wherein, FIG. 11A shows the opening of the anti-operation interlocking piece to start the grounding switch quick closing operation, FIG. 11B The notch on the limit pin can be used to rotate the energy storage plate. Figure 11C shows that the lever drives the energy output shaft to rotate under the action of the energy storage spring reset. Figure 11D shows the ground switch quick closing. The anti-operation interlocking piece 220 is opened, and the grounding closing operation end 2272 of the operating handle is inserted into the energy storage shaft 203. At this time, the grounding closing operation end 2272 of the operating handle will press the isolation limiting pin 222, because the limiting plate 215 The angle has been turned counterclockwise and the isolation limit pin 222 is no longer blocked, as shown in Fig. 11A. At this time, the notch 2226 on the limit pin 222 can rotate the position energy storage plate 211 as shown in FIG. 11B. Turning the operating handle 227 counterclockwise, the energy storage spring 204 continues to be compressed and rotates around the energy storage spring support shaft 206. When the energy storage spring 204 passes the dead center position, the energy storage spring pushes the shaft 210 to disengage the energy storage plate 211. The notch 2115, as shown in FIG. 11C, under the action of the resetting of the energy storage spring 204, the spring output lever 213 quickly drives the energy output shaft 214 to rotate, thereby realizing the isolation switch 109 to quickly close the grounding switch, when the isolation knife 109 moves When in place, The energy storage spring pushes the shaft 210 against the lower cushion 226 to prevent overshoot, as shown in Fig. 11D. At this time, the energy storage spring 204 is still compressed for a certain length, which provides a certain closing force for the grounding switch.
第四，实现接地开关分闸操作，即隔离刀闸109从接地位置运动到隔离位置。图12A-12D是本发明的真空负荷开关实现接地开关分闸操作过程中，操作机构2的储能单元结构示意图；其中，图12A所示为打开防操联锁片，把操作手柄插入储能轴，图12B所示为接地开关分闸操作开始；图12C所示储能弹簧通过死点位置，图12D是为限位板压住隔离开关合闸半轴，隔离刀闸到达隔离位置。如图12A所示，打开防操联锁片220，此时，因储能板211与储能弹簧推动轴210存在一定的距离，若操作手柄的接地合闸操作端2272插入后，转动受限，无法实现操作。因此，只能把操作手柄的隔离操作端2271插入储能轴203，顺时针转动操作手柄227，当储能板211推动凹口2117靠住储能弹簧推动轴210时，接地开关分闸操作开始。随着操作手柄227的转动，储能弹簧204慢慢被压缩并绕着储能弹簧支撑轴206转动，同时能量输出轴214慢慢带动隔离刀闸109运动，当储能弹簧204通过死点位置后，储能弹簧推动轴210脱开储能板211推动凹口2147，在储能弹簧204的复位作用下自行向前运动，如图12C，当限位板215压住隔离开关合闸半轴216时，运动停止，如图12D所示，此时隔离刀闸109到达隔离位置。Fourth, the grounding switch opening operation is realized, that is, the isolating knife gate 109 is moved from the grounding position to the isolated position. 12A-12D are schematic diagrams showing the structure of the energy storage unit of the operating mechanism 2 during the opening operation of the grounding switch by the vacuum load switch of the present invention; wherein, in FIG. 12A, the anti-operation interlocking piece is opened, and the operating handle is inserted into the energy storage device. The shaft, FIG. 12B shows the start of the grounding switch opening operation; the energy storage spring shown in FIG. 12C passes the dead center position, and FIG. 12D shows that the limiting plate presses the isolating switch closing half shaft, and the isolating knife gate reaches the isolation position. As shown in FIG. 12A, the anti-operation interlocking piece 220 is opened. At this time, since the energy storage plate 211 and the energy storage spring push shaft 210 have a certain distance, if the grounding closing operation end 2272 of the operating handle is inserted, the rotation is limited. , the operation could not be achieved. Therefore, only the isolation operation end 2271 of the operation handle can be inserted into the energy storage shaft 203, and the operation handle 227 can be rotated clockwise. When the energy storage plate 211 pushes the notch 2117 against the energy storage spring to push the shaft 210, the grounding switch opening operation starts. . As the operating handle 227 rotates, the energy storage spring 204 is slowly compressed and rotated about the energy storage spring support shaft 206, while the energy output shaft 214 slowly drives the isolating blade 109 to move when the energy storage spring 204 passes the dead center position. After that, the energy storage spring pushes the shaft 210 to disengage the energy storage plate 211 to push the notch 2147, and moves forward by the resetting action of the energy storage spring 204, as shown in FIG. 12C, when the limiting plate 215 presses the isolating switch closing half shaft. At 216 hours, the motion is stopped, as shown in Fig. 12D, at which time the isolating knife gate 109 reaches the isolated position.
第五，实现隔离开关合闸操作，即隔离刀闸109从隔离位置运动到合闸位置。图13A-13C是本发明的真空负荷开关实现隔离开关合闸操作过程中，操作机构2结构示意图；其中，图13A所示为解锁隔离开关合闸旋钮，图13B所示为隔离刀闸向合闸位置运动；图13C所示为隔离刀闸到达合闸位置。如图13A所示，拔出操作手柄227，防操联锁片220闭合，解锁隔离开关合闸旋钮224，并顺时针转动，带动合闸半轴216与限位板215脱开，如图13B所示，在储能弹簧204的复位作用下，能 量输出轴214顺时针转动，带动隔离刀闸向合闸位置运动。当储能弹簧推动轴210被上缓冲垫225顶住时，隔离刀闸109运动到位，操作停止，如图13C所示。Fifth, the isolation switch closing operation is realized, that is, the isolation knife gate 109 is moved from the isolation position to the closing position. 13A-13C are schematic views showing the structure of the operating mechanism 2 during the closing operation of the isolating switch of the vacuum load switch of the present invention; wherein, FIG. 13A shows the unlocking switch of the isolating switch, and FIG. 13B shows the closing of the isolating switch. The brake position moves; Figure 13C shows the isolation knife gate reaching the closing position. As shown in FIG. 13A, the operation handle 227 is pulled out, the anti-operation interlocking piece 220 is closed, the isolating switch closing knob 224 is unlocked, and the clockwise rotation is turned to drive the closing half shaft 216 and the limiting plate 215 to be disengaged, as shown in FIG. 13B. As shown, under the reset action of the energy storage spring 204, The output shaft 214 rotates clockwise to drive the isolating knife gate to the closing position. When the energy storage spring push shaft 210 is held by the upper cushion 225, the isolating knife 109 is moved into position and the operation is stopped, as shown in Fig. 13C.
以上描述详细介绍了操作机构2的工作原理及相关联锁功能，其与高压主回路1配套使用实现了本真空负荷开关的功能。The above description describes in detail the working principle of the operating mechanism 2 and the related interlocking function, which is used in conjunction with the high-voltage main circuit 1 to realize the function of the vacuum load switch.
本本发明的真空负荷开关，高压主回路与控制操作机构的优点：The advantages of the vacuum load switch, the high pressure main circuit and the control operating mechanism of the present invention are as follows:
高压主回路通过隔离刀闸的旋转运动与真空灭弧室的开断和关合功能，实现了负荷开关、隔离开关及接地开关三个功能，配合控制操作机构的功能，节省了刀闸数量和操作机构的数量，并且大大地降低了不带六氟化硫气体的负荷开关设备的空间尺寸，即节省了成本又节省设备占地空间。The high-voltage main circuit realizes the functions of the load switch, the isolating switch and the grounding switch through the rotary motion of the isolating knife gate and the breaking and closing function of the vacuum interrupter, and cooperates with the function of the control operating mechanism to save the number of the knife gates and The number of operating mechanisms and the size of the load switchgear without sulphur hexafluoride gas is greatly reduced, which saves cost and saves equipment space.
尽管为说明目的公开了本发明的较佳实施例和附图，但是熟悉本领域技术的人员，在不脱离本发明及所附的权利要求的精神和范围内，可作各种替换、变化和润饰。因此，本发明不应局限于较佳实施例和附图所公开的内容，本发明的保护范围以所附的权利要求书所界定的范围为准。 While the invention has been described with respect to the preferred embodiments and the embodiments of the invention Retouching. Therefore, the invention should not be limited by the description of the preferred embodiments and the accompanying drawings, and the scope of the invention is defined by the scope of the appended claims.

Claims (15)

  1. 一种真空负荷开关，其特征在于，包括三相独立且设计相同的高压导电回路(1)、操作机构(2)、支撑箱体(3)及传动装置(4)；其中，A vacuum load switch, comprising: a three-phase independent and identically designed high-voltage conductive circuit (1), an operating mechanism (2), a support box (3) and a transmission device (4);
    每一相高压导电回路(1)包括带真空灭弧室的负荷开关单元(10)、隔离开关单元(11)及接地开关单元(12)；Each phase high voltage conductive loop (1) includes a load switch unit (10) with a vacuum interrupter, an isolating switch unit (11) and a grounding switch unit (12);
    操作机构(2)包括控制负荷开关单元(10)的负荷开关操作机构(20)，与控制隔离开关单元(11)及接地开关单元(12)的隔离接地操作机构(21)；The operating mechanism (2) includes a load switch operating mechanism (20) for controlling the load switch unit (10), and an isolated grounding operation mechanism (21) for controlling the isolating switch unit (11) and the grounding switch unit (12);
    传动装置(4)包括负荷开关单元(10)的负荷开关传动装置(41)及隔离开关单元(11)与接地开关单元(12)的隔离开关传动装置(42)。The transmission (4) includes a load switch transmission (41) of the load switch unit (10) and an isolating switch transmission (42) of the disconnector unit (11) and the grounding switch unit (12).
  2. 根据权利要求1所述的真空负荷开关，其特征在于：所述每一相高压导电回路(1)包括隔离刀闸(109)、上进线端子(108)、隔离端子(112)、接地端子(113)和接地出线端子(114)；The vacuum load switch according to claim 1, characterized in that each of the phase high voltage conductive circuits (1) comprises an isolating knife gate (109), an upper incoming terminal (108), an isolating terminal (112), and a grounding terminal ( 113) and grounding outlet terminal (114);
    且所述隔离刀闸(109)、上进线端子(108)、隔离端子(112)、接地端子(113)和接地出线端子(114)配置为：And the isolation knife gate (109), the upper inlet terminal (108), the isolation terminal (112), the ground terminal (113) and the ground outlet terminal (114) are configured as:
    隔离刀闸(109)可以连接上进线端子(108)和隔离端子(112)，从而使所述隔离开关单元(11)处于接通状态且接地开关单元(12)处于分闸状态；The isolating knife gate (109) may be connected to the upper incoming terminal (108) and the isolating terminal (112) such that the isolating switch unit (11) is in an on state and the grounding switch unit (12) is in an open state;
    隔离刀闸(109)可以连接隔离端子(112)和接地端子(113)，从而使所述隔离开关单元(11)处于分闸状态且接地开关单元(12)也处于分闸状态；The isolating knife gate (109) can be connected to the isolating terminal (112) and the grounding terminal (113), so that the isolating switch unit (11) is in an open state and the grounding switch unit (12) is also in an open state;
    隔离刀闸(109)可以连接接地端子(113)和接地出线端子(114)，从而使隔离开关单元(11)处于分闸状态且接地开关单元(12)处于 合闸状态。The isolating knife gate (109) can be connected to the grounding terminal (113) and the grounding outlet terminal (114), so that the isolating switch unit (11) is in the open state and the grounding switch unit (12) is in the Closing state.
  3. 根据权利要求1所述的真空负荷开关，其特征在于：所述负荷开关单元(10)包括真空灭弧室(101)、软连接(102)、拉杆组件(103)、密封罩(104)、内密封圈(105)与外密封圈(106)及下出线端子(107)。The vacuum load switch according to claim 1, characterized in that the load switch unit (10) comprises a vacuum interrupter (101), a soft connection (102), a tie rod assembly (103), a sealing cover (104), Inner seal ring (105) and outer seal ring (106) and lower wire terminal (107).
  4. 根据权利要求1所述的真空负荷开关，其特征在于：所述隔离开关单元(11)和接地开关单元(12)包括上进线端子(108)、隔离刀闸(109)、刀闸驱动(110)、六方主轴(111)、隔离端子(112)、接地端子(113)、及接地出线端子(114)。The vacuum load switch according to claim 1, wherein said isolating switch unit (11) and grounding switch unit (12) comprise an upper incoming terminal (108), an isolating switch (109), and a knife drive (110). ), a hexagonal spindle (111), an isolating terminal (112), a grounding terminal (113), and a grounding outlet terminal (114).
  5. 根据权利要求1所述的真空负荷开关，其特征在于：负荷开关单元(10)、隔离开关单元(11)及接地开关单元(12)的导电部件通过环氧树脂壳体(116)固封成一体。The vacuum load switch according to claim 1, wherein the conductive member of the load switch unit (10), the isolating switch unit (11) and the grounding switch unit (12) is solidified by an epoxy resin case (116). One.
  6. 根据权利要求1所述的真空负荷开关，其特征在于：还包括六方主轴(111)；所述隔离刀闸(109)固定在六方主轴(111)上，并且可以随六方主轴(111)的旋转而转动。A vacuum load switch according to claim 1, further comprising a hexagonal spindle (111); said isolating blade (109) being fixed to the hexagonal spindle (111) and rotatable with the hexagonal spindle (111) And turn.
  7. 根据权利要求1-6任意一项所述的真空负荷开关，其特征在于：所述操作机构(2)包括储能单元；用于为接地开关快速合闸提供能量、限位单元，用于真空负荷开关操作过程中起限位作用；和联锁单元，用于防止误操作。The vacuum load switch according to any one of claims 1 to 6, characterized in that the operating mechanism (2) comprises an energy storage unit; for providing energy for the grounding switch to quickly close, the limiting unit is used for vacuum The limit function is used during the operation of the load switch; and the interlock unit is used to prevent misoperation.
  8. 根据权利要求7所述的真空负荷开关，其特征在于：其特征在于：所述操作机构(2)还包括支撑板(201)、支撑轴(202)。The vacuum load switch according to claim 7, characterized in that the operating mechanism (2) further comprises a support plate (201) and a support shaft (202).
  9. 根据权利要求7所述的真空负荷开关，其特征在于：所述储能单元包括储能轴(203)、储能弹簧(204)、储能弹簧支撑板(205)、 储能弹簧支撑轴(206)、间隔套(207)、储能弹簧导向板(208)、储能弹簧导向轴套(209)、储能弹簧推动轴(210)、储能板(211)、储能板支撑轴(212)、弹簧输出杠杆(213)、能量输出轴(214)；各部件顺序连接。The vacuum load switch according to claim 7, wherein the energy storage unit comprises an energy storage shaft (203), an energy storage spring (204), an energy storage spring support plate (205), The energy storage spring support shaft (206), the spacer sleeve (207), the energy storage spring guiding plate (208), the energy storage spring guiding bushing (209), the energy storage spring pushing shaft (210), the energy storage plate (211), The energy storage plate support shaft (212), the spring output lever (213), and the energy output shaft (214); the components are sequentially connected.
  10. 根据权利要求7所述的真空负荷开关，其特征在于：所述限位单元包括限位板(215)、隔离开关合闸半轴(216)、半轴限位器(217)和半轴复位弹簧(218)；各部件顺序连接。The vacuum load switch according to claim 7, wherein said limiting unit comprises a limiting plate (215), an isolating switch closing half shaft (216), a half shaft limiting device (217) and a half shaft resetting. Spring (218); the components are connected in sequence.
  11. 根据权利要求7所述的真空负荷开关，其特征在于：所述联锁单元包括联锁支架(219)、防操联锁片(220)、防操联锁片导向套(221)、隔离限位销(222)、隔离限位销复位弹簧(223)、隔离开关合闸旋钮(224)、上缓冲垫(225)、下缓冲垫(226)；各部件顺序连接。The vacuum load switch according to claim 7, wherein the interlocking unit comprises an interlocking bracket (219), an anti-operation interlocking piece (220), an anti-operation interlocking piece guiding sleeve (221), and an isolating limit. The position pin (222), the isolation limit pin return spring (223), the isolating switch closing knob (224), the upper cushion (225), and the lower cushion (226); the components are sequentially connected.
  12. 根据权利要求7所述的真空负荷开关，其特征在于：其特征在于：环氧树脂壳体(116)前后另装配有前端盖(117)及后端盖(118)，用于提高爬电距离及绝缘性能。The vacuum load switch according to claim 7, characterized in that: the epoxy resin casing (116) is further equipped with a front end cover (117) and a rear end cover (118) for improving the creepage distance. And insulation properties.
  13. 根据权利要求12所述的真空负荷开关，其特征在于：其特征在于：所述前端盖(117)及后端盖(118)上开有观察窗(1170，1180)。The vacuum load switch according to claim 12, characterized in that the front end cover (117) and the rear end cover (118) are provided with observation windows (1170, 1180).
  14. 根据权利要求1-6任意一项所述的真空负荷开关，其特征在于：所述操作机构(2)还包括操作手柄(227)，其可带动储能轴(203)。A vacuum load switch according to any one of claims 1-6, characterized in that the operating mechanism (2) further comprises an operating handle (227) which can drive the energy storage shaft (203).
  15. 根据权利要求1-6任意一项所述的真空负荷开关，其特征在于：所述隔离刀闸(109)包括两个刀片，两个刀片装配在刀闸驱动装置(110)上，并通过刀闸驱动装置(110)固定在六方主轴(111)上。 A vacuum load switch according to any one of claims 1 to 6, wherein said isolating blade (109) comprises two blades, and the two blades are mounted on the blade driving device (110) and passed through the blade. The brake drive (110) is fixed to the hexagonal spindle (111).
PCT/CN2014/087379 2014-09-25 2014-09-25 Vacuum load switch WO2016045028A1 (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107993881A (en) * 2018-01-19 2018-05-04 常州阿斯博开关有限公司 A kind of single module breaker
CN108022790A (en) * 2018-01-08 2018-05-11 许涛 A kind of disconnecting switch
CN108321003A (en) * 2018-02-12 2018-07-24 浙江紫光电器有限公司 A kind of operating mechanism of high-voltage vacuum load switch
CN108597943A (en) * 2018-06-15 2018-09-28 宏秀电气有限公司 On-pole switch with built-in disconnecting switch
CN109545612A (en) * 2018-12-29 2019-03-29 宁波天安智能电网科技股份有限公司 A kind of integration on-load switch, combined electrical apparatus and switchgear
CN109637885A (en) * 2018-12-19 2019-04-16 厦门顾德益电器有限公司 A kind of switch spindle transmission device
CN109741989A (en) * 2019-03-15 2019-05-10 福建东方电器有限公司 A kind of miniaturization series connection linkage vacuum circuit breaker
CN109786169A (en) * 2018-12-28 2019-05-21 国家电网公司 New distribution net isolation switch
CN109786172A (en) * 2019-02-19 2019-05-21 宁波天安智能电网科技股份有限公司 A kind of built-in vacuum interrupter component and vacuum circuit breaker being isolated
CN110211826A (en) * 2019-04-26 2019-09-06 新机电器有限公司 Interlocking mechanism in on-load switch
CN111584295A (en) * 2020-06-23 2020-08-25 浙江轩玥电气有限公司 Operating mechanism for ring main unit
CN111653450A (en) * 2019-03-04 2020-09-11 胡春生 Magnetic latching operation mechanism for gas insulated circuit breaker cabinet
CN112289626A (en) * 2020-09-25 2021-01-29 夏汝心 Outdoor air-compression type load switch
CN113345754A (en) * 2020-07-17 2021-09-03 许继集团有限公司 Variable-force-arm switch operating mechanism, grounding switch and isolating switch
CN113972088A (en) * 2020-07-24 2022-01-25 贵州电网有限责任公司 Fixed locking state grounding knife switch
TWI758711B (en) * 2019-11-27 2022-03-21 日商三菱電機股份有限公司 Grounding device, distribution board and manufacturing method of grounding device
CN114217181A (en) * 2021-11-25 2022-03-22 广东电网有限责任公司广州供电局 GIS cable sleeve test window
CN114724882A (en) * 2022-03-16 2022-07-08 河北邯峰发电有限责任公司 High-frequency power supply high-voltage isolating switch
CN117220183A (en) * 2023-11-09 2023-12-12 沈阳华德海泰电器有限公司 Inflatable quick grounding switch

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JPH025319A (en) * 1988-06-24 1990-01-10 Toyo Electric Mfg Co Ltd Load switch
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CN202678725U (en) * 2012-06-26 2013-01-16 宁波华通电器集团股份有限公司 High-voltage ring main unit

Cited By (31)

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Publication number Priority date Publication date Assignee Title
CN108022790A (en) * 2018-01-08 2018-05-11 许涛 A kind of disconnecting switch
CN107993881B (en) * 2018-01-19 2024-03-19 常州阿斯博开关有限公司 Single-modularized breaker
CN107993881A (en) * 2018-01-19 2018-05-04 常州阿斯博开关有限公司 A kind of single module breaker
CN108321003A (en) * 2018-02-12 2018-07-24 浙江紫光电器有限公司 A kind of operating mechanism of high-voltage vacuum load switch
CN108321003B (en) * 2018-02-12 2024-02-20 浙江紫光电器有限公司 Operating mechanism of high-voltage vacuum load switch
CN108597943A (en) * 2018-06-15 2018-09-28 宏秀电气有限公司 On-pole switch with built-in disconnecting switch
CN108597943B (en) * 2018-06-15 2024-02-23 宏秀电气有限公司 Pole-mounted switch with built-in isolating switch
CN109637885B (en) * 2018-12-19 2024-06-04 厦门顾德益电气股份有限公司 Switch main shaft transmission device
CN109637885A (en) * 2018-12-19 2019-04-16 厦门顾德益电器有限公司 A kind of switch spindle transmission device
CN109786169A (en) * 2018-12-28 2019-05-21 国家电网公司 New distribution net isolation switch
CN109786169B (en) * 2018-12-28 2024-03-01 国家电网公司 Disconnecting switch of power distribution network
CN109545612A (en) * 2018-12-29 2019-03-29 宁波天安智能电网科技股份有限公司 A kind of integration on-load switch, combined electrical apparatus and switchgear
CN109545612B (en) * 2018-12-29 2023-09-05 宁波天安智能电网科技股份有限公司 Integrated load switch, combined electrical apparatus and cubical switchboard
CN109786172A (en) * 2019-02-19 2019-05-21 宁波天安智能电网科技股份有限公司 A kind of built-in vacuum interrupter component and vacuum circuit breaker being isolated
CN109786172B (en) * 2019-02-19 2023-09-05 宁波天安智能电网科技股份有限公司 Built-in isolated vacuum arc-extinguishing chamber component and vacuum circuit breaker
CN111653450A (en) * 2019-03-04 2020-09-11 胡春生 Magnetic latching operation mechanism for gas insulated circuit breaker cabinet
CN109741989A (en) * 2019-03-15 2019-05-10 福建东方电器有限公司 A kind of miniaturization series connection linkage vacuum circuit breaker
CN110211826A (en) * 2019-04-26 2019-09-06 新机电器有限公司 Interlocking mechanism in on-load switch
CN110211826B (en) * 2019-04-26 2024-05-24 新机电器有限公司 Interlocking mechanism in load switch
TWI758711B (en) * 2019-11-27 2022-03-21 日商三菱電機股份有限公司 Grounding device, distribution board and manufacturing method of grounding device
CN111584295A (en) * 2020-06-23 2020-08-25 浙江轩玥电气有限公司 Operating mechanism for ring main unit
CN113345754B (en) * 2020-07-17 2024-04-16 许继集团有限公司 Variable force arm switch operating mechanism, grounding switch and isolating switch
CN113345754A (en) * 2020-07-17 2021-09-03 许继集团有限公司 Variable-force-arm switch operating mechanism, grounding switch and isolating switch
CN113972088A (en) * 2020-07-24 2022-01-25 贵州电网有限责任公司 Fixed locking state grounding knife switch
CN112289626B (en) * 2020-09-25 2022-12-13 国网福建省电力有限公司漳州市长泰区供电公司 Outdoor air compression type load switch
CN112289626A (en) * 2020-09-25 2021-01-29 夏汝心 Outdoor air-compression type load switch
CN114217181B (en) * 2021-11-25 2024-04-12 广东电网有限责任公司广州供电局 GIS cable sleeve test window
CN114217181A (en) * 2021-11-25 2022-03-22 广东电网有限责任公司广州供电局 GIS cable sleeve test window
CN114724882A (en) * 2022-03-16 2022-07-08 河北邯峰发电有限责任公司 High-frequency power supply high-voltage isolating switch
CN117220183B (en) * 2023-11-09 2024-01-26 沈阳华德海泰电器有限公司 Inflatable quick grounding switch
CN117220183A (en) * 2023-11-09 2023-12-12 沈阳华德海泰电器有限公司 Inflatable quick grounding switch

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