WO2013091444A1 - Embedded pole capable of isolation and switch cabinet - Google Patents

Embedded pole capable of isolation and switch cabinet Download PDF

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Publication number
WO2013091444A1
WO2013091444A1 PCT/CN2012/084120 CN2012084120W WO2013091444A1 WO 2013091444 A1 WO2013091444 A1 WO 2013091444A1 CN 2012084120 W CN2012084120 W CN 2012084120W WO 2013091444 A1 WO2013091444 A1 WO 2013091444A1
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WO
WIPO (PCT)
Prior art keywords
switch
contact
conductor
vacuum load
load switch
Prior art date
Application number
PCT/CN2012/084120
Other languages
French (fr)
Chinese (zh)
Inventor
吴国成
胡伟峰
韦柳涛
Original Assignee
珠海康晋电气有限公司
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Filing date
Publication date
Application filed by 珠海康晋电气有限公司 filed Critical 珠海康晋电气有限公司
Publication of WO2013091444A1 publication Critical patent/WO2013091444A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/01—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with resin casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles

Definitions

  • the invention relates to a power system transmission and distribution device, in particular to a solid-sealed pole with isolation and a switchgear equipped with the solid-sealed pole.
  • the present invention is based on a Chinese patent application filed on Dec. 23, 2011, filed on Jan. 23, 2011, the content of which is hereby incorporated by reference.
  • the insulation scheme is mostly insulated by air insulation or SF6 gas.
  • the two parts that need to be insulated from each other are insulated by air medium.
  • the relative distance between the phases and the relative ground should be no less than 125mm, which will result in
  • the size of the switchgear is relatively large and takes up a lot of space.
  • the SF6 gas is widely used because of its excellent arc-extinguishing characteristics.
  • the SF6 gas can decompose toxic gases under the action of an electric arc, which has a very bad impact on humans and the climate.
  • SF6 gas is included in one of the six restricted greenhouse gases, and SF6 is a very potent greenhouse gas. Although the specific gravity of SF6 is greater than that of air, it can still move to the upper part of the atmosphere with turbulence, and its greenhouse effect will be 23,900 times larger than that of CO2.
  • the SF6's life expectancy is estimated to be between 8,000 and 10,000 years. The most optimistic estimate is not less than 3,200 years.
  • SF6 gas-insulated switchgear is not suitable for unventilated underground sites and defense strategic facilities. Suitable for high altitude areas.
  • Vacuum load switches and disconnectors are important components in high voltage switchgear.
  • the main function of the isolating switch is that when the vacuum load switch is opened, due to the disconnection of the isolating switch, the electrically and non-electric parts can be clearly isolated and act as an auxiliary switch to ensure the safety of the maintenance work.
  • the isolating switch does not have an arc extinguishing device, so it cannot be used to cut off the load current. Otherwise, when operating under high pressure, the breaking point will generate a strong arc and it will be difficult to extinguish itself. It may even cause arcing, burning equipment, and endangering personal safety. This is a serious accident called "loaded isolation switch", so the isolating switch is usually used in conjunction with the vacuum load switch.
  • the existing vacuum load switch uses a solid-sealed pole to reduce the volume, but the isolating switch and the vacuum load switch are separately arranged, the structure is still not compact enough, and the outer shape is large.
  • the main object of the present invention is to provide an isolated solid-sealed pole with a more reasonable structure, small volume, and high insulation performance in view of the defects of the prior art;
  • Another object of the present invention is to provide a switchgear having a good insulation performance and a small volume.
  • the present invention provides an isolated solid-sealed pole, comprising a body, the body is a solid insulator with a cavity cast by epoxy resin using APG molding technology; a vacuum load switch is fixed to the body.
  • the isolation switch is disposed in the cavity of the body; the observation window is disposed on the body for observing the closing and opening states of the isolation switch.
  • the observation window is provided with an explosion-proof glass. Reduce damage to maintenance personnel during incorrect operation.
  • the isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is closed and opened by the separating knife moving up and down between the connecting contact and the static contact;
  • the vacuum load switch comprises a touch The head and the lower contact;
  • the insulating pull rod controls the upper contact to realize the closing and opening of the vacuum load switch;
  • the soft connecting belt is used for connecting the upper contact and the connecting contact to realize the electrical connection between the vacuum load switch and the isolating switch.
  • the electrical connection of the vacuum load switch and the isolating switch is compact.
  • the insulating tie rod is provided with an observation passage at a position opposite to the observation window.
  • the maintenance personnel can observe the position of the isolation switch through the observation window through the observation channel, and provide a clearly visible disconnection point for the maintenance personnel during the maintenance of the equipment to ensure the safety of the equipment maintenance process.
  • the switch cabinet provided by the invention comprises a frame; a solid-sealed pole with isolation, the solid-sealed pole with isolation comprises a body, and the body is a solid insulator with a cavity cast by epoxy resin using APG molding technology, vacuum load
  • the switch the vacuum load switch is solid-sealed in the body; the isolating switch is disposed in the cavity of the body; the observation window is disposed on the body for observing the closing and opening state of the isolating switch.
  • the observation window is provided with an explosion-proof glass, and in the wrong operation, the damage to the maintenance personnel is reduced.
  • the isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is closed and opened by the separating knife moving up and down between the connecting contact and the static contact;
  • the vacuum load switch comprises a touch The head and the lower contact;
  • the insulating pull rod controls the upper contact to realize the closing and opening of the vacuum load switch;
  • the soft connecting belt is used for connecting the upper contact and the connecting contact to realize the electrical connection between the vacuum load switch and the isolating switch.
  • the electrical connection of the vacuum load switch and the isolating switch of the switchgear is compact.
  • the insulating tie rod is provided with an observation passage at a position opposite to the observation window.
  • the maintenance personnel can observe the position of the isolation switch through the observation window through the observation channel, and provide a clearly visible disconnection point for the maintenance personnel during the maintenance of the equipment to ensure the safety of the equipment maintenance process.
  • a fuse barrel includes a solid insulating housing, And a fuse disposed inside the casing; the solid-sealed pole with isolation has an outlet end under the vacuum load switch; the fuse barrel has a connection end connected to the outlet end; the connection between the outlet end and the connection end is rubber
  • the sleeve, double-headed screw and insulating plug are sealed and connected.
  • the vacuum load switch of the switchgear and the sealing connection of the fuse barrel avoid the influence of dust, moisture, humidity, pollution, condensation, high altitude and small animals on the insulation performance of the switchgear.
  • the a conductor the a conductor is sealed in the casing, one end of the a conductor is electrically connected to the fuse, the other end of the a conductor has an internal thread; the c conductor, the c conductor is solidified in the body One end of the c-conductor is electrically connected to the lower contact, and the other end of the c-conductor has a mounting hole; the other end of the a-conductor is electrically connected to the other end of the c-conductor.
  • a, c conductors are respectively sealed in the casing and the body, reducing the production process and saving production costs.
  • the isolated solid-sealed pole and the switch cabinet provided by the invention have reasonable structure, small volume and high insulation performance, and the observation window provides maintenance personnel with safety in the process of equipment maintenance.
  • Figure 1 is a perspective view of the switchgear of the present invention
  • Figure 2 is a front elevational view of the internal structure of the switchgear of the present invention, with the outer frame removed;
  • Figure 3 is a cross-sectional view of the switchgear outlet ring network cabinet of the present invention.
  • Figure 4 is a partial enlarged view of A of Figure 3;
  • Figure 5 is a cross-sectional view of the isolated solid-sealed pole of the switchgear of the present invention.
  • FIG. 6 is a view of the electric operating mechanism for realizing the opening and closing of the vacuum load switch of the switchgear of the present invention
  • Figure 7 is a perspective view of the switchgear dynamic seal of the present invention.
  • Figure 8 is a cross-sectional view of the switchgear dynamic seal of the present invention.
  • Figure 9 is a partial enlarged view of C of Figure 8.
  • Figure 10 is a partial enlarged view of B of Figure 6;
  • Figure 11 is a perspective, cross-sectional view of the isolated solid-state pole of the switchgear of the present invention, with the isolating switch in a closed position;
  • Figure 12 is a perspective cross-sectional view of the isolated solid-state pole of the switchgear of the present invention, the isolating switch is in the open position;
  • Figure 13 is a front elevational view showing the internal structure of the switchgear of the present invention, with the casing and the fuse barrel removed;
  • Figure 14 is a side view of the inlet cabinet ring network cabinet of the switch cabinet of the present invention, and the three busbar connectors A, B and C are arranged at a 45 degree space;
  • Figure 15 is an enlarged cross-sectional view, partly in section D of Figure 13;
  • Figure 16 is a view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the opening position;
  • Figure 17 is a side view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the opening position;
  • Figure 18 is a cross-sectional view of the electromagnetic clutch of the switchgear of the present invention.
  • Figure 19 is a perspective view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the closing position;
  • Figure 20 is a side view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the closing position;
  • 21 is a perspective view of the electric isolation mechanism of the switchgear of the present invention, wherein the isolator is in a position to open;
  • Figure 22 is a perspective view of the electric isolation mechanism of the switchgear of the present invention for controlling the isolator, the isolator being in the closed position.
  • FIG. 1 is a front elevational view of the internal structure of the switchgear of the present invention with the outer frame 11 removed.
  • the switch cabinet 1 comprises a 2-way incoming ring network cabinet 12 and a 1-way outgoing ring network cabinet 13.
  • the outgoing ring network cabinet 13 is equipped with a fuse barrel 2
  • the incoming ring network cabinet 12 is equipped with a cable connector 41 and a current transformer. 42 (see Figure 14).
  • the switchgear cabinet 1 includes a fuse barrel 2 and a solid-sealed pole 3 with isolation.
  • the fuse barrel 2 includes a housing 23 having an opening and a cover 28 covering the opening, the opening and the cover 28 being sealed by a rubber sleeve 27.
  • the housing 23 is provided with a fuse 21, an a conductor 24, a b conductor 25, a conductive sheet 26, a sensor 231 and a grounded vacuum interrupter 22.
  • the ground vacuum interrupter 22 is provided with a ground end 221, and the fuse barrel 2 is provided with a wire end 251.
  • the grounding vacuum interrupter 22 means that the grounding knife is placed in a vacuum environment, and is in a vacuum state when the grounding is combined and divided, and the insulation performance is not affected by the external environment, and the grounding is safe and reliable.
  • the sensor 231 is made of a semiconductor material for sensing whether the fuse barrel 2 is energized to transmit a signal to the live display device of the switchgear 1.
  • the housing 23 is a solid insulating housing and is made of APG (Automatic Pressure Gelation). Process) A solid insulating shell with a cavity cast by molding technology.
  • the grounded vacuum interrupter 22 is cast into the epoxy resin to achieve a grounded vacuum interrupter 22 that is sealed within the housing 23.
  • the a-conductor 24, the b-conductor 25 and the sensor 231 are also cast together in the epoxy resin, which reduces the production process and reduces the production cost.
  • the fuse 21 is mounted in the cavity of the housing 23, and the fuse 21 is electrically connected to the grounded vacuum interrupter 22 through the conductive sheets 26 and the b conductors 25. One end of the a conductor 24 is electrically connected to the fuse 21, and the other end has an internal thread.
  • the isolated solid-sealed pole 3 includes a body 31.
  • the body 31 is provided with a c-conductor 36, an insulating tie rod 35, a vacuum load switch 32, an isolating switch 33 and a soft connecting strip 34.
  • the isolating switch 33 includes an isolating blade 331, a connecting contact 332 and a static contact 333.
  • the upper portion of the isolating blade 331 is insulated, the lower portion is electrically conductive, and the upper portion serves as a tie rod to control the upper and lower movement of the separating blade 331.
  • the isolating blade 331 completes the closing and opening of the isolating switch 33 by moving up and down between the connecting contact 332 and the fixed contact 333.
  • the vacuum load switch 32 includes an upper contact 321 and a lower contact 322.
  • the insulating rod 35 controls the upper contact 321 to realize the closing and opening of the vacuum load switch 32, and the upper contact 321 is connected to the connecting contact 332 through the soft connecting belt 34, thereby achieving electrical connection with the isolating switch 33.
  • the body 31 is a solid insulating body and is made of APG (Automatic Pressure Gelation). Process) Shaped molded parts with cavities.
  • the vacuum load switch 32 is cast in the epoxy resin, and the vacuum load switch 32 is solidified in the body 31.
  • One end of the electrical conductor 36 is connected to the lower contact 322 of the vacuum load switch 32 by a screw, and the other end has a mounting hole, and the c-conductor 36 is also cast in the epoxy resin.
  • the stationary contact 333, the connecting contact 332, the soft connecting strip 34, the isolating blade 331 and the insulating tie rod 35 are then installed into the cavity of the body 31, thereby forming a solid-sealed pole 3 with isolation.
  • An observation window 312 is disposed on the body 31, and an explosion-proof glass (not shown) is mounted on the observation window 312. Through the observation window 312, it can be observed whether the isolation switch 33 is in the closing position (see FIG. 11) or in the opening position (see FIG. 12). To prevent the insulating rod 35 from obstructing the observation line of the observation window 312, the insulating rod 35 includes two Vertical epoxy glass fiber rods 351 (see FIG.
  • the isolated solid-sealed pole 3 is provided with a wire outlet end 311 under the vacuum load switch 32 for connection with the connection end 29 of the fuse barrel 2, see FIG. 4, which is a partial enlarged view of FIG.
  • the connection relationship between the outlet end 311 and the connection end 29 is shown.
  • a rubber sleeve 4 is used at the junction of the outlet end 311 and the connection end 29, and the double-headed screw 52 and the insulating plug 5 are sealed and connected.
  • the outlet end 311 is an upper and lower open tubular structure.
  • a rubber sleeve 4 is disposed on the inner side of the upper and lower ends of the outlet end 311.
  • connection end 29 When the connection end 29 is connected to the outlet end 311, the connection end 29 is inserted into the lower opening of the outlet end 311, and the rubber sleeve 4 at the end is pressed.
  • One end of the screw 52 is inserted from the upper opening of the outlet end 311, passes through the mounting hole of the c-conductor 36, and is connected with the internal thread of the a-conductor 24.
  • the insulating plug 5 is internally provided with an insert nut 51, and the insulating plug 5 is The upper opening of the outlet end 311 is inserted to press the rubber sleeve 4 at the end, and the nut 51 is fastened to the other end of the double-headed screw 52.
  • the isolated solid-sealed pole 3 is provided with an incoming end 313 at a position below the isolating switch 33 for connection to the A-phase bus or the B-phase bus or the C-phase bus (see Fig. 1).
  • the isolated solid sealing post 3 is mounted on the frame 65 by screws, and the dynamic sealing member 6 is installed between the insulating rod 35 and the frame 65 to realize the connection between the solid sealing pole 3 and the insulating rod 35 with isolation. Sealed.
  • the dynamic seal member 6 is a silicone rubber member having a lower end opening, an upper end closed, and a uniform wall thickness connecting the through holes 612, and having a wall thickness of 2 mm.
  • the movable seal 6 includes an upper joint surface 61, a lower joint surface 62, and a cylindrical corrugated portion 63.
  • the connecting through hole 612 is disposed on the upper connecting surface 61, and the upper and lower connecting surfaces 61, 62 are evenly distributed with a plurality of mounting through holes 611, 621, and the inner surfaces of the upper and lower connecting surfaces 61, 62 are provided with two concentric portions.
  • the annular sealing ribs 613, 622, the mounting through holes 611 are located between the two annular sealing ribs 613, and the mounting through holes 621 are located between the two annular sealing ribs 622, and the sealing ribs 613 and 622 are moved.
  • the outer radius of the corrugated portion 63 has a minimum radius of curvature R of 2 mm ⁇ R ⁇ 4 mm.
  • the dynamic seal 6 of the present invention is made of a flexible silicone rubber, and due to the design of the cylindrical corrugated portion 63, the moving life of the dynamic seal 6 can be improved, the production cost can be reduced, and the volume can be made smaller.
  • the insulating rod 35 includes a force receiving portion 352 and a supporting portion 353.
  • the dynamic sealing member 6 is sleeved on the outer periphery of the insulating rod 35.
  • the force receiving portion 352 passes through the connecting through hole 612, and the upper connecting surface 61 is inserted through the screw.
  • the hole 611 is mounted on the support portion 353, and the lower joint surface 62 is mounted on the frame 65 through the screw through the mounting through hole 621.
  • FIG. 6 is a view of the electric operating mechanism for realizing the opening and closing of the vacuum load switch 32 of the solid insulated switchgear of the present invention.
  • the working process is as follows: the DC permanent magnet motor 648 or the worm 647 drives the pinion 646 to rotate, the pinion gear The 646 drives the large gear 645 to rotate into the cam 644 to store energy, the cam 644 drives the output arm 643 to rotate, the output arm 643 drives the spindle arm 641 to rotate through the link 642, and the spindle arm 641 drives the force receiving portion 352 to move up and down. Therefore, the insulating rod 35 is moved up and down, thereby realizing the vacuum load switching and opening process, and the dynamic sealing member 6 acts as a dynamic sealing function for the insulating rod 35 during the above movement.
  • the switchgear cabinet 1 includes A, B, and C three-phase busbar systems.
  • the incoming ring network cabinet 12 of the switchgear cabinet 1 is equipped with a cable connector 41 and a current transformer 42, which does not have a fuse barrel 2.
  • each phase busbar of the A, B, and C three-phase busbar systems is the same.
  • the C-phase busbar includes two busbars 7, three busbar connectors 75, a lead screw 71, a rubber sleeve 74 and an insulating plug 76.
  • the bus bar 7 includes a tubular bus conductor 72 and a casing 73.
  • Shell 73 is made of epoxy resin APG (Automatic Pressure Gelation The insulator is cast by the molding technique, and the tubular bus conductor 72 is cast into the casing 73.
  • the busbar connector 75 includes a d-conductor 751 and a casing 752 having a column-shaped through-hole connection, and the casing 752 is made of epoxy resin APG (Automatic Pressure Gelation The insulating material cast by the molding technique, and the d conductor 751 is cast in the outer casing 752.
  • One end of the d conductor 751 has a connection hole 7511 (see Fig. 11) for connection with the lead screw 71.
  • the lead screw 71 connects the two bus bars 7 in the column-shaped through-hole connecting portion of the bus bar connector 75 located in the middle, and is sealed at the joint by the pressing rubber sleeve 74, and the column-shaped through holes of the bus bar connector 75 on both sides are connected.
  • the connecting portion In addition to sealing with the extruded rubber sleeve 74, the connecting portion also blocks the end of the bus bar 7 by an insulating plug 76.
  • the inside of the insulating plug 76 is fixed with an insert nut 77 which is fastened with the insert nut 77 through the connecting hole 7511 (see FIG. 11) to lock the bus bar 7.
  • the busbar connector 75 is screwed to the incoming end 313 (see FIG. 12) of the isolated solid-sealed pole 3, and the d-conductor 751 of the busbar connector 75 is electrically connected to the isolating switch 33, thereby realizing the C-phase busbar and the strip isolation.
  • the three busbar connectors 75 of the C-phase busbar are substantially in the same plane and are arranged in parallel, each having a central axis c (see Figs. 11 and 14), correspondingly the three busbar connectors of the A-phase and B-phase busbars are also basically Located on the same plane and in parallel, they also have central axes a and b, respectively (see Figure 14).
  • the A-phase bus is adjacent to the B-phase bus, and the B-phase bus and C
  • the phase bus bars are adjacent, the A-phase bus bars are not adjacent to the C-phase bus bars, the central axes a and b are at an angle of 45 degrees, and the central axis b is at an angle of 45 degrees with c, that is, the connection of the three-phase busbars of A, B, and C
  • the head arranges the busbars at 45 degrees, and the layout is reasonable, saving space.
  • each bus bar requires two busbar connectors 75 and one busbar 7 .
  • the number of busbars 7 per phase busbar is more than two, and the busbars are connected.
  • the number of the heads 75 is one more than the number of the bus bars 7.
  • FIGS 16 and 17 are views of the electrically isolated operating mechanism of the switchgear cabinet of the present invention, the motorized isolating operating mechanism 9 for operating the opening and closing of the isolating switch 33.
  • the electric isolation operating mechanism 9 includes a mechanical transmission mechanism and an electromagnetic clutch 8.
  • the mechanical transmission mechanism includes a spring mechanism 91, a trip limit switch 92, a closing stroke switch 93, a transmission shaft 96, a trip lever 962, a DC permanent magnet motor 94, and Pinion 95 (see Figure 21).
  • One end of the transmission shaft 96 is fastened with a rocker arm 961.
  • the trip lever 962 includes two generally L-shaped levers that are symmetrically fastened to the upper and lower sides of the transmission shaft 96.
  • the electromagnetic clutch 8 includes a magnetic yoke 85 equipped with a coil 852, a baffle 84, an armature 83, a magnetic ring gear 841, an armature ring 831, a coupling 82, a spring piece 821, and a large gear 81. Both the magnetic ring gear 841 and the armature ring gear 831 have face teeth of the same size and number.
  • the magnetic cymbal 85 is supported by a deep groove ball bearing 851 and fixed by mounting.
  • the armature 83 is fastened to the armature ring 831 by a pin 832.
  • the baffle 84 and the magnetic ring gear 841 are fastened by a pin 842.
  • the involute outer teeth of the coupling 82 are axially slidable relative to the involute internal teeth of the armature ring 831, and the coupling 82 is tightened with the adjacent bull gear 81 by screws.
  • the shaft hole of the baffle 84 is coupled to the drive shaft 96 by a key 843 for coupling the mechanical transmission mechanism and the electromagnetic clutch 8.
  • the operation of the electromagnetic clutch 8 is as follows: When the coil 852 is energized, an electromagnetic force is generated to attract the armature ring gear 831 to the magnetic ring gear 841, so that the tooth faces of the two face mesh, and the torque is transmitted from the large gear 81 to the coupling 82.
  • the armature ring 831 is transmitted by the coupling 82 to the magnetic ring gear 841, thereby rotating the transmission shaft 96 to realize electric operation.
  • the opening operation process of the electric isolation operating mechanism 9 is as follows: when the opening signal of the switch cabinet 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC is always used.
  • the magnetic motor 94 rotates to drive the pinion 95 (see FIG. 21) to rotate, and the pinion 95 drives the large gear 81 (see FIG. 21) to rotate, so that the transmission shaft 96 rotates clockwise to the opening position, and the opening lever 962 springs.
  • the mechanism 91 moves over the midpoint, the spring mechanism 91 presses the opening stroke switch 92, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating.
  • the operating mechanism 9 is in the opening position.
  • Figures 19 and 20 are views of the electrically isolated operating mechanism of the solid insulated switchgear of the present invention with the electrically isolated operating mechanism in a closed position.
  • the closing operation process of the electric isolation operating mechanism 9 is as follows: when the closing signal of the switch cabinet 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 is reversely driven. The gear 95 rotates, the pinion 95 drives the large gear 81 to rotate, and the transmission shaft 96 rotates counterclockwise to the closing position, while the closing lever 962 toggles the spring mechanism 91 past the midpoint, and the spring mechanism 91 turns the closing stroke switch 93.
  • the electromagnetic clutch 8 is immediately powered off, the armature ring 831 and the magnetic ring gear 841 are separated, and the drive shaft 96 stops rotating, and the electric isolation operating mechanism 9 is in the closing position.
  • the electric isolation operating mechanism 9 can be manually operated to achieve the operation except that it can be electrically operated to be in the branching and closing positions.
  • the electromagnetic clutch is de-energized, the yoke toothed ring 841 is disconnected from the armature ring gear 831. At this time, the electric isolation operating mechanism 9 can be manually turned and closed.
  • the energization and de-energization of the coil 852 is performed by the spring mechanism 91 and the stroke switches 92, 93 to achieve precise control.
  • Fig. 21 is a view showing the electric isolation operating mechanism 9 of the solid insulated switchgear of the present invention for controlling the isolating blade 331, which is in the open position.
  • the switch cabinet 1 is provided with an L-shaped bracket 97.
  • the bracket 97 is fastened to support the upper end of the isolating blade 331.
  • the bracket 97 is further provided with a long guiding hole 98.
  • the rocker arm 961 can slide along the long guiding hole 98 to drive the bracket 97. And move down.
  • the opening process of the isolating switch 33 is as follows: when the opening signal of the switchgear 1 is activated, the armature ring 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 rotates to drive the pinion 95 to rotate.
  • the pinion gear 95 drives the large gear 81 to rotate, so that the transmission shaft 96 rotates clockwise, and the rocker arm 961 fastened to the transmission shaft 96 drives the bracket 97 to move upward until the isolation knife 331 is in the opening position, and the opening lever 962 is simultaneously opened.
  • the spring mechanism 91 When the spring mechanism 91 is turned over the midpoint, the spring mechanism 91 presses the opening stroke switch 92, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating.
  • Fig. 22 is a view showing the electric isolation operating mechanism 9 of the solid insulated switchgear of the present invention for controlling the isolating blade 331, which is in the closed position.
  • the closing process of the isolating switch 33 is as follows: when the closing signal of the switchgear 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 reversely drives the pinion 95 to rotate.
  • the pinion gear 95 drives the large gear 81 to rotate, and the transmission shaft 96 rotates counterclockwise.
  • the rocker arm 961 fastened to the transmission shaft 96 drives the bracket 97 to move downward until the isolation knife 331 is in the closing position, and the closing lever is closed.
  • the spring mechanism 91 is turned over the midpoint, the spring mechanism 91 presses the closing stroke switch 93, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating.
  • the vacuum load switch and the isolating switch are placed in the same solid-sealed pole, which makes the isolated solid-sealed pole and the switchgear structure reasonable, small in size, high in insulation performance, and the observation window provides a visible disconnection for the maintenance personnel. Point to ensure the safety of the equipment maintenance process.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

An embedded pole capable of isolation provided by the present invention comprises a main body, the main body being a solid insulator made of epoxy resin by casting with the APG molding technology and having a cavity; a vacuum load switch, embedded in the main body; an isolation switch, disposed in the cavity of the main body; an observation window, disposed on the main body and for observing the on/off state of the isolation switch. The vacuum load switch and the isolation switch are both disposed in the same embedded pole, so that the structure is reasonable, the volume is small, and the insulation performance is high. The observation window provides maintenance personnel with a highly visible break point, thereby ensuring the safety during equipment maintenance.

Description

带隔离的固封极柱及开关柜  Isolated solid-sealed pole and switchgear
本发明涉及电力***输配电设备，尤其涉及一种带隔离的固封极柱及配备该固封极柱的开关柜。本发明基于申请日为2011年12月23日、申请号为201110440017.5的中国发明专利申请，该申请的内容作为与本发明密切相关的参考文献引入本文。 The invention relates to a power system transmission and distribution device, in particular to a solid-sealed pole with isolation and a switchgear equipped with the solid-sealed pole. The present invention is based on a Chinese patent application filed on Dec. 23, 2011, filed on Jan. 23, 2011, the content of which is hereby incorporated by reference.
现有开关柜产品中，绝缘方案大多采用空气绝缘或SF6气体绝缘。需要相互绝缘的两个零部件之间用空气介质绝缘，必须有一定的安全距离，根据空气在输电网的高压下被击穿的距离，相间、相对地净距离应不小于125mm，这将导致开关柜的体积比较大，占用空间大；SF6气体由于具有优良的灭弧特性，也被广泛地采用，但SF6气体在电弧作用下可以分解有毒的气体，对人类和气候的影响非常的恶劣。在京都协定书中，SF6气体被列入受限制的六种温室气体之一，SF6是一种温室效应极强的气体。虽然SF6的比重大于空气，但随着湍流，它仍然可以运动到大气层的上部，其温室效应将比CO2大23900倍。SF6的可存年限估计在8000至10000年之间，最为乐观的估计是不少于3200年，另外采用SF6气体绝缘的开关柜特别不适合用于不通风的地下场所以及国防战略设施，也不适合用于高海拔地区。 In the existing switchgear products, the insulation scheme is mostly insulated by air insulation or SF6 gas. The two parts that need to be insulated from each other are insulated by air medium. There must be a certain safety distance. According to the distance that the air is broken down under the high voltage of the transmission network, the relative distance between the phases and the relative ground should be no less than 125mm, which will result in The size of the switchgear is relatively large and takes up a lot of space. The SF6 gas is widely used because of its excellent arc-extinguishing characteristics. However, the SF6 gas can decompose toxic gases under the action of an electric arc, which has a very bad impact on humans and the climate. In the Kyoto Protocol, SF6 gas is included in one of the six restricted greenhouse gases, and SF6 is a very potent greenhouse gas. Although the specific gravity of SF6 is greater than that of air, it can still move to the upper part of the atmosphere with turbulence, and its greenhouse effect will be 23,900 times larger than that of CO2. The SF6's life expectancy is estimated to be between 8,000 and 10,000 years. The most optimistic estimate is not less than 3,200 years. In addition, SF6 gas-insulated switchgear is not suitable for unventilated underground sites and defense strategic facilities. Suitable for high altitude areas.
真空负荷开关和隔离开关是高压开关柜中十分重要的部件。隔离开关的主要功能是当真空负荷开关分闸后，由于隔离开关的断开，使有电与无电部分能得到明显的隔离，起辅助开关的作用，以确保检修工作的安全。隔离开关没有灭弧装置，因此不能用来切断负荷电流，否则在高压情形下操作时，断开点将产生强烈电弧，并很难自行熄灭，甚至可能造成飞弧，烧损设备，危及人身安全，这就是所谓“带负荷拉隔离开关”的严重事故，因此隔离开关通常与真空负荷开关配合使用。现有的真空负荷开关采用固封极柱而缩小了体积，但是隔离开关和真空负荷开关是分离设置的，结构仍不够紧凑，外形尺寸庞大。 Vacuum load switches and disconnectors are important components in high voltage switchgear. The main function of the isolating switch is that when the vacuum load switch is opened, due to the disconnection of the isolating switch, the electrically and non-electric parts can be clearly isolated and act as an auxiliary switch to ensure the safety of the maintenance work. The isolating switch does not have an arc extinguishing device, so it cannot be used to cut off the load current. Otherwise, when operating under high pressure, the breaking point will generate a strong arc and it will be difficult to extinguish itself. It may even cause arcing, burning equipment, and endangering personal safety. This is a serious accident called "loaded isolation switch", so the isolating switch is usually used in conjunction with the vacuum load switch. The existing vacuum load switch uses a solid-sealed pole to reduce the volume, but the isolating switch and the vacuum load switch are separately arranged, the structure is still not compact enough, and the outer shape is large.
本发明的主要目的在于针对现有技术缺陷，提供一种结构更加合理、体积小、绝缘性能高的带隔离的固封极柱；The main object of the present invention is to provide an isolated solid-sealed pole with a more reasonable structure, small volume, and high insulation performance in view of the defects of the prior art;
本发明的另一目的是提供一种绝缘性能好、体积较小的开关柜。Another object of the present invention is to provide a switchgear having a good insulation performance and a small volume.
为了实现上述主要目的，本发明提供的带隔离的固封极柱,包括本体，本体是由环氧树脂用APG成型技术浇注而成的具有空腔的固体绝缘体；真空负荷开关，固封于本体内；隔离开关，设置于本体的空腔内；观察窗，设置于本体上，用于观察隔离开关的合、分闸状态。In order to achieve the above main object, the present invention provides an isolated solid-sealed pole, comprising a body, the body is a solid insulator with a cavity cast by epoxy resin using APG molding technology; a vacuum load switch is fixed to the body. The isolation switch is disposed in the cavity of the body; the observation window is disposed on the body for observing the closing and opening states of the isolation switch.
具体地，观察窗上安装有防爆玻璃。在错误操作中，降低对维修人员的伤害。Specifically, the observation window is provided with an explosion-proof glass. Reduce damage to maintenance personnel during incorrect operation.
具体地，隔离开关包括隔离刀，连接触头和静触头，隔离开关通过隔离刀在连接触头和静触头之间上、下移动来完成的合、分闸；真空负荷开关包括上触头和下触头；绝缘拉杆，控制上触头实现真空负荷开关的合、分闸；软连接带，用于连接上触头和连接触头，实现真空负荷开关与隔离开关的电连接。真空负荷开关和隔离开关的电连接结构紧凑。Specifically, the isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is closed and opened by the separating knife moving up and down between the connecting contact and the static contact; the vacuum load switch comprises a touch The head and the lower contact; the insulating pull rod controls the upper contact to realize the closing and opening of the vacuum load switch; the soft connecting belt is used for connecting the upper contact and the connecting contact to realize the electrical connection between the vacuum load switch and the isolating switch. The electrical connection of the vacuum load switch and the isolating switch is compact.
较具体地，绝缘拉杆在观察窗相对的位置上设置有观察通道。维修人员可以通过观察窗穿过观察通道观察到隔离开关所处的位置，在设备维修时，为维修人员提供一个明显可见的断开点，保证设备检修过程的安全。More specifically, the insulating tie rod is provided with an observation passage at a position opposite to the observation window. The maintenance personnel can observe the position of the isolation switch through the observation window through the observation channel, and provide a clearly visible disconnection point for the maintenance personnel during the maintenance of the equipment to ensure the safety of the equipment maintenance process.
本发明提供的开关柜包括框架；带隔离的固封极柱,带隔离的固封极柱包括本体，本体是由环氧树脂用APG成型技术浇注而成的具有空腔的固体绝缘体，真空负荷开关，真空负荷开关固封于本体内；隔离开关，设置于本体的空腔内；观察窗，设置于本体上，用于观察隔离开关的合、分闸状态。The switch cabinet provided by the invention comprises a frame; a solid-sealed pole with isolation, the solid-sealed pole with isolation comprises a body, and the body is a solid insulator with a cavity cast by epoxy resin using APG molding technology, vacuum load The switch, the vacuum load switch is solid-sealed in the body; the isolating switch is disposed in the cavity of the body; the observation window is disposed on the body for observing the closing and opening state of the isolating switch.
具体地，观察窗上安装有防爆玻璃，在错误操作中，降低对维修人员的伤害。Specifically, the observation window is provided with an explosion-proof glass, and in the wrong operation, the damage to the maintenance personnel is reduced.
具体地，隔离开关包括隔离刀，连接触头和静触头，隔离开关通过隔离刀在连接触头和静触头之间上、下移动来完成的合、分闸；真空负荷开关包括上触头和下触头；绝缘拉杆，控制上触头实现真空负荷开关的合、分闸；软连接带，用于连接上触头和连接触头，实现真空负荷开关与隔离开关的电连接。开关柜的真空负荷开关和隔离开关的电连接结构紧凑。Specifically, the isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is closed and opened by the separating knife moving up and down between the connecting contact and the static contact; the vacuum load switch comprises a touch The head and the lower contact; the insulating pull rod controls the upper contact to realize the closing and opening of the vacuum load switch; the soft connecting belt is used for connecting the upper contact and the connecting contact to realize the electrical connection between the vacuum load switch and the isolating switch. The electrical connection of the vacuum load switch and the isolating switch of the switchgear is compact.
较具体地，绝缘拉杆在观察窗相对的位置上设置有观察通道。维修人员可以通过观察窗穿过观察通道观察到隔离开关所处的位置，在设备维修时，为维修人员提供一个明显可见的断开点，保证设备检修过程的安全。More specifically, the insulating tie rod is provided with an observation passage at a position opposite to the observation window. The maintenance personnel can observe the position of the isolation switch through the observation window through the observation channel, and provide a clearly visible disconnection point for the maintenance personnel during the maintenance of the equipment to ensure the safety of the equipment maintenance process.
较具体地，熔丝筒，其包括固体绝缘壳体, 和设置于壳体内部的熔断器；带隔离的固封极柱在位于真空负荷开关的下方具有出线端；熔丝筒具有与出线端相连接的连接端；出线端与连接端的连接处采用橡胶套，双头螺杆和绝缘堵头密封、连接。开关柜的真空负荷开关与熔丝筒的密封连接方式，避免了运行环境灰尘、潮气、湿度、污秽、凝露、高海拔、小动物等对开关柜绝缘性能的影响。More specifically, a fuse barrel includes a solid insulating housing, And a fuse disposed inside the casing; the solid-sealed pole with isolation has an outlet end under the vacuum load switch; the fuse barrel has a connection end connected to the outlet end; the connection between the outlet end and the connection end is rubber The sleeve, double-headed screw and insulating plug are sealed and connected. The vacuum load switch of the switchgear and the sealing connection of the fuse barrel avoid the influence of dust, moisture, humidity, pollution, condensation, high altitude and small animals on the insulation performance of the switchgear.
更具体地，a导电体，a导电体固封于壳体内，a导电体的一端与熔断器电连接，a导电体的另一端具有内螺纹；c导电体，c导电体固封于本体中，c导电体的一端与下触头电连接，c导电体的另一端具有安装孔；a导电体的另一端与c导电体的另一端电连接。a、c导电体分别固封于壳体和本体内，减少了生产工序，节约了生产成本。More specifically, the a conductor, the a conductor is sealed in the casing, one end of the a conductor is electrically connected to the fuse, the other end of the a conductor has an internal thread; the c conductor, the c conductor is solidified in the body One end of the c-conductor is electrically connected to the lower contact, and the other end of the c-conductor has a mounting hole; the other end of the a-conductor is electrically connected to the other end of the c-conductor. a, c conductors are respectively sealed in the casing and the body, reducing the production process and saving production costs.
本发明提供的带隔离的固封极柱和开关柜结构合理、体积小，绝缘性能高，观察窗为维修人员提供了设备检修过程中的安全性。 The isolated solid-sealed pole and the switch cabinet provided by the invention have reasonable structure, small volume and high insulation performance, and the observation window provides maintenance personnel with safety in the process of equipment maintenance.
图1是本发明开关柜的立体图；Figure 1 is a perspective view of the switchgear of the present invention;
图2是本发明开关柜内部结构的主视图，去除了外部的框架；Figure 2 is a front elevational view of the internal structure of the switchgear of the present invention, with the outer frame removed;
图3 是本发明开关柜出线环网柜的剖视图；Figure 3 is a cross-sectional view of the switchgear outlet ring network cabinet of the present invention;
图4是图3的A局部放大图；Figure 4 is a partial enlarged view of A of Figure 3;
图5是本发明开关柜的带隔离的固封极柱的剖视图；Figure 5 is a cross-sectional view of the isolated solid-sealed pole of the switchgear of the present invention;
图6是本发明开关柜的真空负荷开关实现合、分闸的电动操作机构视图；6 is a view of the electric operating mechanism for realizing the opening and closing of the vacuum load switch of the switchgear of the present invention;
图7是本发明开关柜动密封件的立体图；Figure 7 is a perspective view of the switchgear dynamic seal of the present invention;
图8是本发明开关柜动密封件的剖视图；Figure 8 is a cross-sectional view of the switchgear dynamic seal of the present invention;
图9是图8的C局部放大图；Figure 9 is a partial enlarged view of C of Figure 8;
图10是图6的B局部放大图；Figure 10 is a partial enlarged view of B of Figure 6;
图11本发明开关柜的带隔离的固封极柱的立体剖视图，隔离开关处于合闸的位置；Figure 11 is a perspective, cross-sectional view of the isolated solid-state pole of the switchgear of the present invention, with the isolating switch in a closed position;
图12本发明开关柜的带隔离的固封极柱的立体剖视图，隔离开关处于分闸的位置；Figure 12 is a perspective cross-sectional view of the isolated solid-state pole of the switchgear of the present invention, the isolating switch is in the open position;
图13是本发明开关柜内部结构的主视图，去除了箱体和熔丝筒；Figure 13 is a front elevational view showing the internal structure of the switchgear of the present invention, with the casing and the fuse barrel removed;
图14本发明开关柜进线环网柜的侧视图，A、B、C三项母线连接头在空间上进行45度排列；Figure 14 is a side view of the inlet cabinet ring network cabinet of the switch cabinet of the present invention, and the three busbar connectors A, B and C are arranged at a 45 degree space;
图15是图13的D局部剖视放大图；Figure 15 is an enlarged cross-sectional view, partly in section D of Figure 13;
图16是本发明开关柜的电动隔离机构视图，电动隔离机构处于分闸位置；Figure 16 is a view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the opening position;
图17是本发明开关柜的电动隔离机构侧视图，电动隔离机构处于分闸位置；Figure 17 is a side view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the opening position;
图18是本发明开关柜的电磁离合器剖视图；Figure 18 is a cross-sectional view of the electromagnetic clutch of the switchgear of the present invention;
图19是本发明开关柜的电动隔离机构立体图，电动隔离机构处于合闸位置；Figure 19 is a perspective view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the closing position;
图20是本发明开关柜的电动隔离机构的侧视图，电动隔离机构处于合闸位置；Figure 20 is a side view of the electric isolation mechanism of the switchgear of the present invention, the electric isolation mechanism is in the closing position;
图21是本发明开关柜的电动隔离机构控制隔离刀的立体图，隔离刀处于分闸的位置；21 is a perspective view of the electric isolation mechanism of the switchgear of the present invention, wherein the isolator is in a position to open;
图22是本发明开关柜的电动隔离机构控制隔离刀的立体图，隔离刀处于合闸的位置。Figure 22 is a perspective view of the electric isolation mechanism of the switchgear of the present invention for controlling the isolator, the isolator being in the closed position.
以下结合附图，通过实施例对本发明作进一步的说明。The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
参见图1和图2，图2是本发明开关柜去除了外部的框架11后内部结构的主视图。开关柜1包括2路进线环网柜12和1路出线环网柜13，出线环网柜13中配备有熔丝筒2，进线环网柜12配备有电缆连接头41和电流互感器42（参见图14）。还有连接进线环网柜12和出线环网柜13的A、B、C三相母线***，母线7的结构将在后加以说明。Referring to Figures 1 and 2, Figure 2 is a front elevational view of the internal structure of the switchgear of the present invention with the outer frame 11 removed. The switch cabinet 1 comprises a 2-way incoming ring network cabinet 12 and a 1-way outgoing ring network cabinet 13. The outgoing ring network cabinet 13 is equipped with a fuse barrel 2, and the incoming ring network cabinet 12 is equipped with a cable connector 41 and a current transformer. 42 (see Figure 14). There are also A, B, and C three-phase busbar systems connected to the incoming ring network cabinet 12 and the outgoing ring network cabinet 13, and the structure of the bus bar 7 will be described later.
参见图3，开关柜1包括熔丝筒2和带隔离的固封极柱3。熔丝筒2包括具有敞口的壳体23和覆盖该敞口的盖子28，该敞口和盖子28之间采用橡胶套27密封。壳体23内设有熔断器21，a导电体24,b导电体25，导电片26，传感器231和接地真空灭弧室22。接地真空灭弧室22设置有接地端221，熔丝筒2设置有出线端251。接地真空灭弧室22是指接地刀放置在真空环境内，在接地合、分时均处于真空状态，其绝缘性能不受外界环境影响，接地安全可靠。传感器231由半导体材料制成，用于感应熔丝筒2是否带电，以将信号传递给开关柜1的带电显示装置。Referring to Figure 3, the switchgear cabinet 1 includes a fuse barrel 2 and a solid-sealed pole 3 with isolation. The fuse barrel 2 includes a housing 23 having an opening and a cover 28 covering the opening, the opening and the cover 28 being sealed by a rubber sleeve 27. The housing 23 is provided with a fuse 21, an a conductor 24, a b conductor 25, a conductive sheet 26, a sensor 231 and a grounded vacuum interrupter 22. The ground vacuum interrupter 22 is provided with a ground end 221, and the fuse barrel 2 is provided with a wire end 251. The grounding vacuum interrupter 22 means that the grounding knife is placed in a vacuum environment, and is in a vacuum state when the grounding is combined and divided, and the insulation performance is not affected by the external environment, and the grounding is safe and reliable. The sensor 231 is made of a semiconductor material for sensing whether the fuse barrel 2 is energized to transmit a signal to the live display device of the switchgear 1.
壳体23为固体绝缘壳体，是由环氧树脂用APG（Automatic Pressure Gelation Process）成型技术浇注而成的带有空腔的固体绝缘壳体。接地真空灭弧室22浇注在环氧树脂内，实现接地真空灭弧室22固封于壳体23内。另外，a导电体24,b导电体25和传感器231也一起浇注在环氧树脂内，减少了生产工序，降低了生产成本。熔断器21安装于壳体23的空腔内，熔断器21通过导电片26和b导电体25与接地真空灭弧室22电连接。a导电体24的一端与熔断器21电连接，另一端具有内螺纹。The housing 23 is a solid insulating housing and is made of APG (Automatic Pressure Gelation). Process) A solid insulating shell with a cavity cast by molding technology. The grounded vacuum interrupter 22 is cast into the epoxy resin to achieve a grounded vacuum interrupter 22 that is sealed within the housing 23. In addition, the a-conductor 24, the b-conductor 25 and the sensor 231 are also cast together in the epoxy resin, which reduces the production process and reduces the production cost. The fuse 21 is mounted in the cavity of the housing 23, and the fuse 21 is electrically connected to the grounded vacuum interrupter 22 through the conductive sheets 26 and the b conductors 25. One end of the a conductor 24 is electrically connected to the fuse 21, and the other end has an internal thread.
参见图5，带隔离的固封极柱3包括本体31。本体31内设置有c导电体36，绝缘拉杆35，真空负荷开关32，隔离开关33和软连接带34。隔离开关33包括隔离刀331，连接触头332和静触头333，隔离刀331的上部绝缘，下部导电，上部作为拉杆来控制隔离刀331上、下运动。隔离刀331通过在连接触头332和静触头333之间的上、下移动来完成隔离开关33的合、分闸。真空负荷开关32包括上触头321和下触头322。绝缘拉杆35控制上触头321实现真空负荷开关32的合、分闸，上触头321通过软连接带34与连接触头332连接，进而实现与隔离开关33的电连接。Referring to FIG. 5, the isolated solid-sealed pole 3 includes a body 31. The body 31 is provided with a c-conductor 36, an insulating tie rod 35, a vacuum load switch 32, an isolating switch 33 and a soft connecting strip 34. The isolating switch 33 includes an isolating blade 331, a connecting contact 332 and a static contact 333. The upper portion of the isolating blade 331 is insulated, the lower portion is electrically conductive, and the upper portion serves as a tie rod to control the upper and lower movement of the separating blade 331. The isolating blade 331 completes the closing and opening of the isolating switch 33 by moving up and down between the connecting contact 332 and the fixed contact 333. The vacuum load switch 32 includes an upper contact 321 and a lower contact 322. The insulating rod 35 controls the upper contact 321 to realize the closing and opening of the vacuum load switch 32, and the upper contact 321 is connected to the connecting contact 332 through the soft connecting belt 34, thereby achieving electrical connection with the isolating switch 33.
本体31为固体绝缘本体，是由环氧树脂用APG（Automatic Pressure Gelation Process）成型技术浇注而成的带有空腔的异型件。真空负荷开关32浇注在环氧树脂内，实现真空负荷开关32固封于本体31内。c导电体36一端通过螺钉与真空负荷开关32的下触头322相连接，其另一端具有安装孔，c导电体36也浇注在环氧树脂内。静触头333、连接触头332、软连接带34、隔离刀331和绝缘拉杆35再安装入本体31的空腔内，从而形成了带隔离的固封极柱3。The body 31 is a solid insulating body and is made of APG (Automatic Pressure Gelation). Process) Shaped molded parts with cavities. The vacuum load switch 32 is cast in the epoxy resin, and the vacuum load switch 32 is solidified in the body 31. One end of the electrical conductor 36 is connected to the lower contact 322 of the vacuum load switch 32 by a screw, and the other end has a mounting hole, and the c-conductor 36 is also cast in the epoxy resin. The stationary contact 333, the connecting contact 332, the soft connecting strip 34, the isolating blade 331 and the insulating tie rod 35 are then installed into the cavity of the body 31, thereby forming a solid-sealed pole 3 with isolation.
本体31上设置有观察窗312，观察窗312上安装有防爆玻璃（未示出）。通过观察窗312可以观察到隔离开关33是处于合闸位置（见图11）还是处于分闸位置（见图12），为避免绝缘拉杆35阻挡观察窗312的观察视线，绝缘拉杆35包括两根相互平行、两端并联的竖直的环氧树脂玻璃纤维棒351（见图11），两环氧树脂玻璃纤维棒351之间形成观察通道，维修人员可以通过观察窗312、穿过观察通道观察到隔离刀331所处的位置，在设备维修时，为维修人员提供一个明显可见的隔离刀331的位置状态，保证设备检修过程的安全。An observation window 312 is disposed on the body 31, and an explosion-proof glass (not shown) is mounted on the observation window 312. Through the observation window 312, it can be observed whether the isolation switch 33 is in the closing position (see FIG. 11) or in the opening position (see FIG. 12). To prevent the insulating rod 35 from obstructing the observation line of the observation window 312, the insulating rod 35 includes two Vertical epoxy glass fiber rods 351 (see FIG. 11) parallel to each other and connected in parallel at both ends, and an observation channel formed between the two epoxy fiberglass rods 351, the maintenance personnel can observe through the observation window 312 and through the observation channel To the position where the isolating knife 331 is located, when the equipment is repaired, the maintenance personnel are provided with a position state of the visible isolation knife 331 to ensure the safety of the equipment maintenance process.
带隔离的固封极柱3在真空负荷开关32的下方设置有出线端311，用于与熔丝筒2的连接端29相连接，参见图4，图4是图3的A局部放大图，显示了出线端311与连接端29的连接关系。出线端311与连接端29的连接处采用橡胶套4，双头螺杆52和绝缘堵头5密封、连接。出线端311为上、下开口管状结构。出线端311的上、下两端内侧均设置有橡胶套4，当连接端29与出线端311相连接时，连接端29***出线端311的下开口，挤压此端的橡胶套4，双头螺杆52一端从出线端311的上开口***，穿过c导电体36的安装孔，与a导电体24的内螺纹连接，绝缘堵头5内部固设有嵌件螺母51，绝缘堵头5从出线端311的上开口***，挤压位于此端的橡胶套4，螺母51与双头螺杆52的另一端紧固连接。从而实现出线端311与连接端29的电连接，也确保了连接处与外界的电气绝缘。带隔离的固封极柱3在隔离开关33的下方位置设置有进线端313，供连接A相母线或B相母线或C相母线（参见图1）用。The isolated solid-sealed pole 3 is provided with a wire outlet end 311 under the vacuum load switch 32 for connection with the connection end 29 of the fuse barrel 2, see FIG. 4, which is a partial enlarged view of FIG. The connection relationship between the outlet end 311 and the connection end 29 is shown. A rubber sleeve 4 is used at the junction of the outlet end 311 and the connection end 29, and the double-headed screw 52 and the insulating plug 5 are sealed and connected. The outlet end 311 is an upper and lower open tubular structure. A rubber sleeve 4 is disposed on the inner side of the upper and lower ends of the outlet end 311. When the connection end 29 is connected to the outlet end 311, the connection end 29 is inserted into the lower opening of the outlet end 311, and the rubber sleeve 4 at the end is pressed. One end of the screw 52 is inserted from the upper opening of the outlet end 311, passes through the mounting hole of the c-conductor 36, and is connected with the internal thread of the a-conductor 24. The insulating plug 5 is internally provided with an insert nut 51, and the insulating plug 5 is The upper opening of the outlet end 311 is inserted to press the rubber sleeve 4 at the end, and the nut 51 is fastened to the other end of the double-headed screw 52. Thereby, the electrical connection between the outlet end 311 and the connection end 29 is achieved, and the electrical insulation of the connection from the outside is also ensured. The isolated solid-sealed pole 3 is provided with an incoming end 313 at a position below the isolating switch 33 for connection to the A-phase bus or the B-phase bus or the C-phase bus (see Fig. 1).
参见图6，带隔离的固封极柱3采用螺钉安装在框架65上，动密封件6安装在绝缘拉杆35和框架65之间，实现带隔离的固封极柱3与绝缘拉杆35连接处的密封。Referring to Fig. 6, the isolated solid sealing post 3 is mounted on the frame 65 by screws, and the dynamic sealing member 6 is installed between the insulating rod 35 and the frame 65 to realize the connection between the solid sealing pole 3 and the insulating rod 35 with isolation. Sealed.
参见图7、8和9，动密封件6是下端敞口、上端封闭且具有连接通孔612的整体壁厚一致的硅橡胶件，其壁厚为2mm。动密封件6包括上连接面61、下连接面62和筒状的波纹部63。连接通孔612设置在上连接面61上，上、下连接面61，62上均布了多个安装通孔611，621，上、下连接面61，62的内表面均设置有两条同心的环形密封凸棱613，622，安装通孔611位于两条环形的密封凸棱613之间，安装通孔621位于两条环形的密封凸棱622之间，密封凸棱613和622提高了动密封件6的密封效果。波纹部63的外波纹最小曲率半径R的取值范围是：2mm≦R≦4mm。本发明的动密封件6采用柔性好的硅橡胶制造，并且由于筒状的波纹部63的设计，因此可以提高动密封件6的运动寿命，降低生产成本，并且体积更小。Referring to Figures 7, 8, and 9, the dynamic seal member 6 is a silicone rubber member having a lower end opening, an upper end closed, and a uniform wall thickness connecting the through holes 612, and having a wall thickness of 2 mm. The movable seal 6 includes an upper joint surface 61, a lower joint surface 62, and a cylindrical corrugated portion 63. The connecting through hole 612 is disposed on the upper connecting surface 61, and the upper and lower connecting surfaces 61, 62 are evenly distributed with a plurality of mounting through holes 611, 621, and the inner surfaces of the upper and lower connecting surfaces 61, 62 are provided with two concentric portions. The annular sealing ribs 613, 622, the mounting through holes 611 are located between the two annular sealing ribs 613, and the mounting through holes 621 are located between the two annular sealing ribs 622, and the sealing ribs 613 and 622 are moved. The sealing effect of the seal 6. The outer radius of the corrugated portion 63 has a minimum radius of curvature R of 2 mm ≦ R ≦ 4 mm. The dynamic seal 6 of the present invention is made of a flexible silicone rubber, and due to the design of the cylindrical corrugated portion 63, the moving life of the dynamic seal 6 can be improved, the production cost can be reduced, and the volume can be made smaller.
参见图10，绝缘拉杆35包括受力部352和支撑部353，动密封件6套在绝缘拉杆35的***，受力部352穿过连接通孔612，上连接面61通过螺钉穿过安装通孔611安装在支撑部353上，下连接面62通过螺钉穿过安装通孔621安装在框架65上。Referring to FIG. 10, the insulating rod 35 includes a force receiving portion 352 and a supporting portion 353. The dynamic sealing member 6 is sleeved on the outer periphery of the insulating rod 35. The force receiving portion 352 passes through the connecting through hole 612, and the upper connecting surface 61 is inserted through the screw. The hole 611 is mounted on the support portion 353, and the lower joint surface 62 is mounted on the frame 65 through the screw through the mounting through hole 621.
参见图6，图6是本发明固体绝缘开关柜的真空负荷开关32实现合、分闸的电动操作机构视图，其工作过程如下：直流永磁电机648或蜗杆647带动小齿轮646旋转，小齿轮646带动大齿轮645旋转为凸轮644储能，凸轮644带动输出拐臂643转动，输出拐臂643通过连杆642带动主轴拐臂641转动，主轴拐臂641带动受力部352做上、下运动，从而使绝缘拉杆35上、下运动，从而实现真空负荷开关合、分闸过程，在以上运动过程中动密封件6为绝缘拉杆35起到动密封作用。Referring to FIG. 6, FIG. 6 is a view of the electric operating mechanism for realizing the opening and closing of the vacuum load switch 32 of the solid insulated switchgear of the present invention. The working process is as follows: the DC permanent magnet motor 648 or the worm 647 drives the pinion 646 to rotate, the pinion gear The 646 drives the large gear 645 to rotate into the cam 644 to store energy, the cam 644 drives the output arm 643 to rotate, the output arm 643 drives the spindle arm 641 to rotate through the link 642, and the spindle arm 641 drives the force receiving portion 352 to move up and down. Therefore, the insulating rod 35 is moved up and down, thereby realizing the vacuum load switching and opening process, and the dynamic sealing member 6 acts as a dynamic sealing function for the insulating rod 35 during the above movement.
参见图13，开关柜1包括A、B、C三相母线***。参见图14，开关柜1的进线环网柜12配备有电缆连接头41和电流互感器42，进线环网柜12不具有熔丝筒2。Referring to Figure 13, the switchgear cabinet 1 includes A, B, and C three-phase busbar systems. Referring to Fig. 14, the incoming ring network cabinet 12 of the switchgear cabinet 1 is equipped with a cable connector 41 and a current transformer 42, which does not have a fuse barrel 2.
A、B、C三相母线***的每相母线的结构一样，现以C相母线为例，参见图15，图15是C相母线的局部剖视图，显示了C相母线的内部结构。C相母线包括2根母线7，3个母线连接头75，丝杆71，橡胶套74和绝缘堵头76。母线7包括管状母线导体72和壳套73。壳套73是由环氧树脂用APG（Automatic Pressure Gelation Process）成型技术浇注而成的绝缘体，管状母线导体72浇注在壳套73内。母线连接头75包括d导电体751和具有柱状通孔连接部的外壳752，外壳752由环氧树脂用APG（Automatic Pressure Gelation Process）成型技术浇注而成的绝缘体，d导电体751浇注在外壳752内。d导电体751的一端具有一个连接孔7511（参见图11），用于与丝杆71连接。丝杆71将2根母线7在位于中间的母线连接头75的柱状通孔连接部中进行连接，在连接处用挤压橡胶套74进行密封，在两侧的母线连接头75的柱状通孔连接部中除了用挤压橡胶套74进行密封外，还通过绝缘堵头76封堵母线7的端部。绝缘堵头76的内部固设有嵌件螺母77，丝杆71穿过连接孔7511（参见图11）与嵌件螺母77紧固，从而使母线7锁紧。母线连接头75与带隔离的固封极柱3的进线端313（参见图12）螺纹连接，母线连接头75的d导电体751与隔离开关33电连接，从而实现C相母线与带隔离的固封极柱3的电连接。The structure of each phase busbar of the A, B, and C three-phase busbar systems is the same. Now take the C-phase busbar as an example. See Figure 15, which is a partial cross-sectional view of the C-phase busbar, showing the internal structure of the C-phase busbar. The C-phase busbar includes two busbars 7, three busbar connectors 75, a lead screw 71, a rubber sleeve 74 and an insulating plug 76. The bus bar 7 includes a tubular bus conductor 72 and a casing 73. Shell 73 is made of epoxy resin APG (Automatic Pressure Gelation The insulator is cast by the molding technique, and the tubular bus conductor 72 is cast into the casing 73. The busbar connector 75 includes a d-conductor 751 and a casing 752 having a column-shaped through-hole connection, and the casing 752 is made of epoxy resin APG (Automatic Pressure Gelation The insulating material cast by the molding technique, and the d conductor 751 is cast in the outer casing 752. One end of the d conductor 751 has a connection hole 7511 (see Fig. 11) for connection with the lead screw 71. The lead screw 71 connects the two bus bars 7 in the column-shaped through-hole connecting portion of the bus bar connector 75 located in the middle, and is sealed at the joint by the pressing rubber sleeve 74, and the column-shaped through holes of the bus bar connector 75 on both sides are connected. In addition to sealing with the extruded rubber sleeve 74, the connecting portion also blocks the end of the bus bar 7 by an insulating plug 76. The inside of the insulating plug 76 is fixed with an insert nut 77 which is fastened with the insert nut 77 through the connecting hole 7511 (see FIG. 11) to lock the bus bar 7. The busbar connector 75 is screwed to the incoming end 313 (see FIG. 12) of the isolated solid-sealed pole 3, and the d-conductor 751 of the busbar connector 75 is electrically connected to the isolating switch 33, thereby realizing the C-phase busbar and the strip isolation. The electrical connection of the solid sealed pole 3.
C相母线的三个母线连接头75基本位于同一平面上且平行设置，它们均具有中心轴线c（参见图11和图14）,相应地A相和B相母线的三个母线连接头也基本位于同一平面上且平行设置，它们也分别具有中心轴线a和b（参见图14），从垂直于母线7轴向的方向上看，A相母线与B相母线相邻，B相母线与C相母线相邻，A相母线与C相母线不相邻，中心轴线a与b成45度夹角，中心轴线b与c成45度夹角，即：A、B、C三相母线的连接头将母线进行45度排列，布局合理，节约了空间。The three busbar connectors 75 of the C-phase busbar are substantially in the same plane and are arranged in parallel, each having a central axis c (see Figs. 11 and 14), correspondingly the three busbar connectors of the A-phase and B-phase busbars are also basically Located on the same plane and in parallel, they also have central axes a and b, respectively (see Figure 14). From the direction perpendicular to the axial direction of the busbar 7, the A-phase bus is adjacent to the B-phase bus, and the B-phase bus and C The phase bus bars are adjacent, the A-phase bus bars are not adjacent to the C-phase bus bars, the central axes a and b are at an angle of 45 degrees, and the central axis b is at an angle of 45 degrees with c, that is, the connection of the three-phase busbars of A, B, and C The head arranges the busbars at 45 degrees, and the layout is reasonable, saving space.
当A、B、C三相母线***用于的固体绝缘开关柜只包括1路进线环网柜和1路出线环网柜时，每相母线需要两个母线连接头75和一根母线7。当A、B、C三相母线***用于的固体绝缘开关柜包括2路以上的进线环网柜和1路出线环网柜时，每相母线的母线7数量为2根以上，母线连接头75的数量比母线7的数量多1个。When the solid insulated switchgear used in the A, B and C three-phase busbar system only includes one incoming ring network cabinet and one outgoing ring network cabinet, each bus bar requires two busbar connectors 75 and one busbar 7 . When the solid insulated switchgear used in the A, B and C three-phase busbar system includes more than two incoming ring network cabinets and one outgoing ring network cabinet, the number of busbars 7 per phase busbar is more than two, and the busbars are connected. The number of the heads 75 is one more than the number of the bus bars 7.
参见图16和图17，图16和17是本发明开关柜的电动隔离操作机构的视图，电动隔离操作机构9用于操作隔离开关33的分、合闸。电动隔离操作机构9包括机械传动机构和电磁离合器8，机械传动机构包括弹簧机构91、分闸行程开关92、合闸行程开关93、传动轴96、分闸拨杆962、直流永磁电机94和小齿轮95（见图21）。传动轴96的一端紧固设置有摇臂961。分闸拨杆962包括两个大致为L型的拨杆，拨杆对称紧固在传动轴96的上、下侧。Referring to Figures 16 and 17, Figures 16 and 17 are views of the electrically isolated operating mechanism of the switchgear cabinet of the present invention, the motorized isolating operating mechanism 9 for operating the opening and closing of the isolating switch 33. The electric isolation operating mechanism 9 includes a mechanical transmission mechanism and an electromagnetic clutch 8. The mechanical transmission mechanism includes a spring mechanism 91, a trip limit switch 92, a closing stroke switch 93, a transmission shaft 96, a trip lever 962, a DC permanent magnet motor 94, and Pinion 95 (see Figure 21). One end of the transmission shaft 96 is fastened with a rocker arm 961. The trip lever 962 includes two generally L-shaped levers that are symmetrically fastened to the upper and lower sides of the transmission shaft 96.
参见图18，图18是本发明固体绝缘开关柜的电磁离合器视图。电磁离合器8包括装有线圈852的磁扼85、挡板84、衔铁83、磁扼齿环841、衔铁齿环831、联结82、弹簧片821和大齿轮81。磁扼齿环841和衔铁齿环831均有大小和数量相同的端面齿。磁扼85由深沟球轴承851支撑，通过安装将其固定。衔铁83与衔铁齿环831采用销钉832紧固连接。挡板84和磁扼齿环841采用销钉842紧固连接。联结82的渐开线外齿可相对衔铁齿环831的渐开线内齿在轴向上滑移，联结82与相邻大齿轮81采用螺钉紧固。Referring to Figure 18, there is shown an electromagnetic clutch view of the solid insulated switchgear of the present invention. The electromagnetic clutch 8 includes a magnetic yoke 85 equipped with a coil 852, a baffle 84, an armature 83, a magnetic ring gear 841, an armature ring 831, a coupling 82, a spring piece 821, and a large gear 81. Both the magnetic ring gear 841 and the armature ring gear 831 have face teeth of the same size and number. The magnetic cymbal 85 is supported by a deep groove ball bearing 851 and fixed by mounting. The armature 83 is fastened to the armature ring 831 by a pin 832. The baffle 84 and the magnetic ring gear 841 are fastened by a pin 842. The involute outer teeth of the coupling 82 are axially slidable relative to the involute internal teeth of the armature ring 831, and the coupling 82 is tightened with the adjacent bull gear 81 by screws.
挡板84的轴孔与传动轴96用键843相联接，使机械传动机构和电磁离合器8相结合。The shaft hole of the baffle 84 is coupled to the drive shaft 96 by a key 843 for coupling the mechanical transmission mechanism and the electromagnetic clutch 8.
电磁离合器8的操作过程如下：当线圈852通电时，产生电磁力将衔铁齿环831吸向磁扼齿环841，使两者的端面齿相啮合，力矩便从大齿轮81传递到联结82，由联结82带动衔铁齿环831传递到磁扼齿环841，从而使传动轴96旋转，实现电动操作。当线圈断电后，电磁力消失，衔铁齿环831便借助端面齿的轴向推力和弹簧片821的恢复力与磁扼齿环841分离，衔铁齿环831和磁扼齿环841的端面齿相脱开，便终止了力矩的传递。The operation of the electromagnetic clutch 8 is as follows: When the coil 852 is energized, an electromagnetic force is generated to attract the armature ring gear 831 to the magnetic ring gear 841, so that the tooth faces of the two face mesh, and the torque is transmitted from the large gear 81 to the coupling 82. The armature ring 831 is transmitted by the coupling 82 to the magnetic ring gear 841, thereby rotating the transmission shaft 96 to realize electric operation. When the coil is de-energized, the electromagnetic force disappears, and the armature ring 831 is separated from the magnetic ring gear 841 by the axial thrust of the face tooth and the restoring force of the spring piece 821, and the face gear of the armature ring gear 831 and the magnetic ring gear 841 When the phase is disengaged, the transmission of the torque is terminated.
参见图16和图17，电动隔离操作机构9的分闸工作过程如下：当开关柜1的分闸信号启动时，电磁离合器8的衔铁齿环831和磁扼齿环841相吸合，直流永磁电机94正转带动小齿轮95（见图21）旋转，小齿轮95带动大齿轮81（见图21）旋转，使传动轴96顺时针旋转到分闸位置，同时分闸拨杆962将弹簧机构91拨动过中点，弹簧机构91将分闸行程开关92压下，电磁离合器8立刻断电，衔铁齿环831和磁扼齿环841相分离，传动轴96停止转动，此时电动隔离操作机构9处于分闸位置。Referring to FIG. 16 and FIG. 17, the opening operation process of the electric isolation operating mechanism 9 is as follows: when the opening signal of the switch cabinet 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC is always used. The magnetic motor 94 rotates to drive the pinion 95 (see FIG. 21) to rotate, and the pinion 95 drives the large gear 81 (see FIG. 21) to rotate, so that the transmission shaft 96 rotates clockwise to the opening position, and the opening lever 962 springs. The mechanism 91 moves over the midpoint, the spring mechanism 91 presses the opening stroke switch 92, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating. The operating mechanism 9 is in the opening position.
参见图19和20，图19和20是本发明固体绝缘开关柜的电动隔离操作机构的视图，电动隔离操作机构处于合闸位置。电动隔离操作机构9的合闸工作过程如下：当开关柜1的合闸信号启动时，电磁离合器8的衔铁齿环831和磁扼齿环841相吸合，直流永磁电机94反转带动小齿轮95旋转，小齿轮95带动大齿轮81旋转，使传动轴96逆时针旋转到合闸位置，同时合闸拨杆962将弹簧机构91拨动过中点，弹簧机构91将合闸行程开关93压下，电磁离合器8立刻断电，衔铁齿环831和磁扼齿环841相分离，传动轴96停止转动，此时电动隔离操作机构9处于合闸位置。Referring to Figures 19 and 20, Figures 19 and 20 are views of the electrically isolated operating mechanism of the solid insulated switchgear of the present invention with the electrically isolated operating mechanism in a closed position. The closing operation process of the electric isolation operating mechanism 9 is as follows: when the closing signal of the switch cabinet 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 is reversely driven. The gear 95 rotates, the pinion 95 drives the large gear 81 to rotate, and the transmission shaft 96 rotates counterclockwise to the closing position, while the closing lever 962 toggles the spring mechanism 91 past the midpoint, and the spring mechanism 91 turns the closing stroke switch 93. When pressed, the electromagnetic clutch 8 is immediately powered off, the armature ring 831 and the magnetic ring gear 841 are separated, and the drive shaft 96 stops rotating, and the electric isolation operating mechanism 9 is in the closing position.
电动隔离操作机构9除可电动操作使其处于分、合闸位置外，还可手动操作来实现。当电磁离合器断电时，磁轭齿环841与衔铁齿环831断开，届时可通过手动旋转传动轴96来实现电动隔离操作机构9分、合闸。The electric isolation operating mechanism 9 can be manually operated to achieve the operation except that it can be electrically operated to be in the branching and closing positions. When the electromagnetic clutch is de-energized, the yoke toothed ring 841 is disconnected from the armature ring gear 831. At this time, the electric isolation operating mechanism 9 can be manually turned and closed.
线圈852的通电、断电是通过弹簧机构91和行程开关92，93共同作用实现精确控制。The energization and de-energization of the coil 852 is performed by the spring mechanism 91 and the stroke switches 92, 93 to achieve precise control.
参见图21，图21是本发明固体绝缘开关柜的电动隔离操作机构9控制隔离刀331的视图，隔离刀331处于分闸的位置。开关柜1设置有L型的支架97，支架97紧固支撑隔离刀331的上端，支架97上还设置有长型引导孔98，摇臂961可沿长型引导孔98滑动，带动支架97上、下运动。Referring to Fig. 21, Fig. 21 is a view showing the electric isolation operating mechanism 9 of the solid insulated switchgear of the present invention for controlling the isolating blade 331, which is in the open position. The switch cabinet 1 is provided with an L-shaped bracket 97. The bracket 97 is fastened to support the upper end of the isolating blade 331. The bracket 97 is further provided with a long guiding hole 98. The rocker arm 961 can slide along the long guiding hole 98 to drive the bracket 97. And move down.
隔离开关33的分闸过程如下：当开关柜1的分闸信号启动时，电磁离合器8的衔铁齿环831和磁扼齿环841相吸合，直流永磁电机94正转带动小齿轮95旋转，小齿轮95带动大齿轮81旋转，使传动轴96顺时针旋转，与传动轴96紧固连接的摇臂961带动支架97向上运动，直到隔离刀331处于分闸位置，同时分闸拨杆962将弹簧机构91拨动过中点，弹簧机构91将分闸行程开关92压下，电磁离合器8立刻断电，衔铁齿环831和磁扼齿环841相分离，传动轴96停止转动。The opening process of the isolating switch 33 is as follows: when the opening signal of the switchgear 1 is activated, the armature ring 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 rotates to drive the pinion 95 to rotate. The pinion gear 95 drives the large gear 81 to rotate, so that the transmission shaft 96 rotates clockwise, and the rocker arm 961 fastened to the transmission shaft 96 drives the bracket 97 to move upward until the isolation knife 331 is in the opening position, and the opening lever 962 is simultaneously opened. When the spring mechanism 91 is turned over the midpoint, the spring mechanism 91 presses the opening stroke switch 92, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating.
参见图22，图22是本发明固体绝缘开关柜的电动隔离操作机构9控制隔离刀331的视图，隔离刀331处于合闸的位置。隔离开关33的合闸过程如下：当开关柜1的合闸信号启动时，电磁离合器8的衔铁齿环831和磁扼齿环841相吸合，直流永磁电机94反转带动小齿轮95旋转，小齿轮95带动大齿轮81旋转，使传动轴96逆时针旋转，与传动轴96紧固连接的摇臂961带动支架97向下运动，直到隔离刀331处于合闸位置，同时合闸拨杆962将弹簧机构91拨动过中点，弹簧机构91将合闸行程开关93压下，电磁离合器8立刻断电，衔铁齿环831和磁扼齿环841相分离，传动轴96停止转动。Referring to Fig. 22, Fig. 22 is a view showing the electric isolation operating mechanism 9 of the solid insulated switchgear of the present invention for controlling the isolating blade 331, which is in the closed position. The closing process of the isolating switch 33 is as follows: when the closing signal of the switchgear 1 is activated, the armature ring gear 831 of the electromagnetic clutch 8 and the magnetic ring gear 841 are attracted, and the DC permanent magnet motor 94 reversely drives the pinion 95 to rotate. The pinion gear 95 drives the large gear 81 to rotate, and the transmission shaft 96 rotates counterclockwise. The rocker arm 961 fastened to the transmission shaft 96 drives the bracket 97 to move downward until the isolation knife 331 is in the closing position, and the closing lever is closed. 962, the spring mechanism 91 is turned over the midpoint, the spring mechanism 91 presses the closing stroke switch 93, the electromagnetic clutch 8 is immediately powered off, the armature ring gear 831 and the magnetic ring gear 841 are separated, and the transmission shaft 96 stops rotating.
最后需要强调的是，以上举例仅仅是对本发明的解释而不是限制，本发明的保护范围以权利要求的内容为准。作为本领域的普通工程技术人员，任何基于本发明的发明创造精神而作出的等效技术变换都在本发明的保护范围之内。It is to be understood that the above examples are only illustrative of the invention and are not to be construed as limiting the scope of the invention. Any equivalent technical transformation based on the inventive spirit of the present invention is within the scope of the present invention as a person of ordinary skill in the art.
真空负荷开关和隔离开关都置于同一个固封极柱内，使得带隔离的固封极柱和开关柜结构合理、体积小，绝缘性能高，观察窗为维修人员提供一个明显可见的断开点，保证设备检修过程的安全。 The vacuum load switch and the isolating switch are placed in the same solid-sealed pole, which makes the isolated solid-sealed pole and the switchgear structure reasonable, small in size, high in insulation performance, and the observation window provides a visible disconnection for the maintenance personnel. Point to ensure the safety of the equipment maintenance process.

Claims (10)

  1. 带隔离的固封极柱,包括 Isolated solid-sealed poles, including
    本体，所述本体是由环氧树脂用APG成型技术浇注而成的具有空腔的固体绝缘体；a body, the body being a solid insulator having a cavity cast from epoxy resin by APG molding technology;
    真空负荷开关，固封于所述本体内；a vacuum load switch sealed in the body;
    其特征在于：It is characterized by:
    隔离开关，设置于所述本体的空腔内；An isolating switch disposed in the cavity of the body;
    观察窗，设置于所述本体上，用于观察所述隔离开关的合、分闸状态。The observation window is disposed on the body for observing the closing and opening states of the isolating switch.
  2. 根据权利要求1所述的带隔离的固封极柱，其特征在于：The insulated solid-sealed pole according to claim 1, wherein:
    所述观察窗上安装有防爆玻璃。Explosion-proof glass is mounted on the observation window.
  3. 根据权利要求1所述的带隔离的固封极柱，其特征在于：The insulated solid-sealed pole according to claim 1, wherein:
    所述隔离开关包括隔离刀，连接触头和静触头，所述隔离开关通过所述隔离刀在连接触头和静触头之间上、下移动来完成合、分闸；The isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is moved up and down between the connecting contact and the fixed contact by the separating knife to complete the closing and opening;
    所述真空负荷开关包括上触头和下触头；The vacuum load switch includes an upper contact and a lower contact;
    绝缘拉杆，控制所述上触头实现所述真空负荷开关的合、分闸；Insulating the tie rod, controlling the upper contact to realize the closing and opening of the vacuum load switch;
    软连接带，用于连接所述上触头和所述连接触头，实现所述真空负荷开关与所述隔离开关的电连接。a soft connecting strip for connecting the upper contact and the connecting contact to realize electrical connection between the vacuum load switch and the isolating switch.
  4. 根据权利要求3所述的带隔离的固封极柱，其特征在于：The insulated solid-sealed pole according to claim 3, wherein:
    所述绝缘拉杆在所述观察窗相对的位置上设置有观察通道。The insulating rod is provided with an observation channel at a position opposite to the observation window.
  5. 开关柜，包括Switch cabinet, including
    框架；frame;
    带隔离的固封极柱,所述带隔离的固封极柱包括本体，所述本体是由环氧树脂用APG成型技术浇注而成的具有空腔的固体绝缘体，真空负荷开关，所述真空负荷开关固封于所述本体内；An isolated solid-sealed pole comprising a body, the body being a solid insulator having a cavity cast by epoxy resin using APG molding technology, a vacuum load switch, the vacuum The load switch is fixed in the body;
    其特征在于：It is characterized by:
    隔离开关，设置于所述本体的空腔内；An isolating switch disposed in the cavity of the body;
    观察窗，设置于所述本体上，用于观察所述隔离开关的合、分闸状态。The observation window is disposed on the body for observing the closing and opening states of the isolating switch.
  6. 根据权利要求5所述的开关柜，其特征在于：The switchgear cabinet according to claim 5, characterized in that:
    所述观察窗上安装有防爆玻璃。Explosion-proof glass is mounted on the observation window.
  7. 根据权利要求6所述的开关柜，其特征在于：The switchgear cabinet according to claim 6, wherein:
    所述隔离开关包括隔离刀，连接触头和静触头，所述隔离开关通过所述隔离刀在连接触头和静触头之间上、下移动来完成合、分闸；The isolating switch comprises an isolating knife, a connecting contact and a static contact, and the isolating switch is moved up and down between the connecting contact and the fixed contact by the separating knife to complete the closing and opening;
    所述真空负荷开关包括上触头和下触头；The vacuum load switch includes an upper contact and a lower contact;
    绝缘拉杆，控制所述上触头实现所述真空负荷开关的合、分闸；Insulating the tie rod, controlling the upper contact to realize the closing and opening of the vacuum load switch;
    软连接带，用于连接所述上触头和所述连接触头，实现所述真空负荷开关与所述隔离开关的电连接。a soft connecting strip for connecting the upper contact and the connecting contact to realize electrical connection between the vacuum load switch and the isolating switch.
  8. 根据权利要求7所述的开关柜，其特征在于：The switchgear cabinet according to claim 7, wherein:
    所述绝缘拉杆在所述观察窗相对的位置上设置有观察通道。The insulating rod is provided with an observation channel at a position opposite to the observation window.
  9. 根据权利要求5至7任意一项所述的开关柜，其特征在于：A switchgear cabinet according to any one of claims 5 to 7, characterized in that:
    熔丝筒，其包括固体绝缘壳体, 和设置于所述壳体内部的熔断器；a fuse barrel including a solid insulating housing, and a fuse disposed inside the housing;
    所述带隔离的固封极柱在位于所述真空负荷开关的下方具有出线端；The isolated solid-sealed pole has an outlet end under the vacuum load switch;
    所述熔丝筒具有与所述出线端相连接的连接端；The fuse barrel has a connection end connected to the outlet end;
    所述出线端与所述连接端的连接处采用橡胶套，双头螺杆和绝缘堵头密封、连接。A rubber sleeve is used at the connection between the outlet end and the connecting end, and the double-headed screw and the insulating plug are sealed and connected.
  10. 根据权利要求9所述的开关柜，其特征在于：The switchgear cabinet according to claim 9, wherein:
    a导电体，所述a导电体固封于所述壳体内，所述a导电体的一端与所述熔断器电连接，所述a导电体的另一端具有内螺纹；a conductor, the a conductor is sealed in the housing, one end of the a conductor is electrically connected to the fuse, and the other end of the a conductor has an internal thread;
    c导电体，所述c导电体固封于所述本体中，所述c导电体的一端与所述下触头电连接，所述c导电体的另一端具有安装孔；c conductor, the c conductor is solidified in the body, one end of the c conductor is electrically connected to the lower contact, and the other end of the c conductor has a mounting hole;
    所述a导电体的另一端与所述c导电体的另一端电连接。 The other end of the a-conductor is electrically connected to the other end of the c-conductor.
PCT/CN2012/084120 2011-12-23 2012-11-06 Embedded pole capable of isolation and switch cabinet WO2013091444A1 (en)

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CN201110440017.5A CN102412519B (en) 2011-12-23 2011-12-23 Solid-sealed polar pole with insulation and switch cabinet

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