CN113571373A - Three-column horizontal rotation type disconnecting switch's on-off device - Google Patents
Three-column horizontal rotation type disconnecting switch's on-off device Download PDFInfo
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- CN113571373A CN113571373A CN202111038346.7A CN202111038346A CN113571373A CN 113571373 A CN113571373 A CN 113571373A CN 202111038346 A CN202111038346 A CN 202111038346A CN 113571373 A CN113571373 A CN 113571373A
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- 230000003068 static effect Effects 0.000 claims abstract description 140
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910001080 W alloy Inorganic materials 0.000 claims description 4
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an on-off device of a three-column horizontal rotary isolating switch, which comprises a movable arc contact rod and a switching-off arc-breaking contact rod, wherein the movable arc contact rod is arranged at the free end of a movable knife arm of the three-column horizontal rotary isolating switch, and the switching-off arc-breaking contact rod protrudes out of a static contact; when the switch is switched on, the movable arc contact rod contacts the switch-off arc-breaking contact rod, the switch-off arc-breaking contact rod rotates under the action of the movable arc contact rod, and after the movable arc contact rod passes over the switch-off arc-breaking contact rod, the switch-off arc-breaking contact rod returns to a natural state under the action of gravity; during brake opening, the movable arc contact rod contacts the brake opening and arc breaking contact rod, the brake opening and arc breaking contact rod rotates under the action of the movable arc contact rod, and after the movable arc contact rod crosses the brake opening and arc breaking contact rod, the brake opening and arc breaking contact rod returns to a natural state under the action of the first torsion spring. The auxiliary contact rod structure is improved on the basis of meeting the working condition requirement, the effects of simple structure and low cost are realized, and the difficulty of installation and maintenance is reduced.
Description
Technical Field
The invention relates to the field of power equipment, in particular to a switching-on and switching-off device of a three-column horizontal rotary isolating switch.
Background
With the improvement of the current grade of power transmission engineering and the increasing saturation of line capacity, the highest bus conversion current requirement of the three-column horizontal rotary isolating switch is increased from 1600A to 4000A, and the switching-off voltage is also increased by more than 50 percent. When the traditional three-column horizontal rotation type isolating switch meets the working condition of converting the current of the high-parameter bus, a generally adopted scheme is that a small auxiliary circuit breaker is arranged on a static contact of an original isolating switch, and the complex matching of a moving contact and a static contact of the isolating switch drives the auxiliary circuit breaker to open and close the bus rotating current of a closed circuit.
In view of the above, it is desirable to provide an opening/closing device for a three-column horizontal rotation type isolation switch to solve the above problems.
Disclosure of Invention
The invention mainly aims to provide an on-off device of a three-column horizontal rotary isolating switch, and aims to solve the problems of complex structure, high cost and high installation and maintenance difficulty of the existing on-off device of the three-column horizontal rotary isolating switch.
In order to achieve the above object, the present invention provides an on/off device of a three-column horizontal rotation type disconnecting switch, comprising an auxiliary contact rod assembly; wherein the auxiliary trolley bar assembly comprises:
the movable arc contact rod is arranged at the free end of a movable knife arm of the three-column horizontal rotary isolating switch and is electrically connected with a movable contact of the movable knife arm;
the switching-off arc-breaking contact rod is electrically connected with a static contact piece of a static contact of the three-column horizontal rotary isolating switch, the switching-off arc-breaking contact rod protrudes out of the static contact and is rotatably connected to one side of the static contact through a first rotating pin, a first torsion spring is arranged on the first rotating pin, the switching-off arc-breaking contact rod protrudes out of the static contact in a natural state, the first torsion spring obliquely extends towards the switching-on direction and is positioned on the switching-on path of the moving arc contact rod, and the distance from the first rotating pin to the inner wall of the static contact along the horizontal direction is greater than the length of the switching-off arc-breaking contact rod;
when the three-column horizontal rotary isolating switch is switched on, the movable arc contact rod contacts the switching-off and arc-breaking contact rod, the switching-off and arc-breaking contact rod rotates under the action of the movable arc contact rod, and the switching-off and arc-breaking contact rod returns to a natural state under the action of gravity after the movable arc contact rod passes over the switching-off and arc-breaking contact rod; during three-column horizontal rotation type isolator separating brake, move the arc feeler lever contact the separating brake arc contact lever that breaks, the separating brake arc contact lever that breaks is in rotate under the effect of moving the arc feeler lever, move the arc feeler lever and cross behind the separating brake arc contact lever that breaks, the separating brake arc contact lever that breaks replies to natural state under the effect of first torsional spring.
Preferably, the on-off switching device further comprises a closing static arc contact rod, which is arranged at the position of the static contact, which is matched with the dynamic arc contact rod, and is electrically connected with the static contact piece; the static arc contact rod for closing is rotatably connected to one side of the static contact through a second rotating pin, a second torsion spring is arranged on the second rotating pin, the static arc contact rod for closing protrudes from the static contact in a natural state, the static arc contact rod for closing extends in a direction away from the static contact in an inclined mode and is located on a closing path of the movable arc contact rod, and the distance between the second rotating pin and the inner wall of the static contact in the horizontal direction is smaller than the length of the static arc contact rod for closing; when the three-column horizontal rotary isolating switch is switched on, the movable arc contact rod is contacted with the static arc contact rod, and the static arc contact rod rotates along the switching-on direction under the action of the movable arc contact rod until the movable contact is contacted with the static contact piece.
Preferably, the fixed ends of the closing static arc feeler lever and the opening and breaking arc feeler lever are both provided with auxiliary copper stranded wires, and the auxiliary copper stranded wires are used for electrically connecting the closing static arc feeler lever and the opening and breaking arc feeler lever with the fixed contact respectively.
Preferably, the outer wall of the first rotating pin is rotatably connected with a first rotating block, and the first rotating block is fixedly connected with the switching-off arc-breaking contact rod; the outer wall of the second rotating pin is rotatably connected with a second rotating block, and the second rotating block is fixedly connected with the closing static arc contact rod.
Preferably, the outer walls of the first rotating pin and the second rotating pin are provided with insulating shaft sleeves.
Preferably, the outer wall of the first rotating pin is further provided with an adjusting washer for adjusting the position of the opening and breaking arc contact rod, so that the opening and breaking arc contact rod and the closing static arc contact rod are arranged in a staggered mode.
Preferably, the static contact is provided with a limiting pin for providing a limiting fulcrum for the opening arc breaking contact rod and the closing static arc contact rod, and one side of the limiting pin is further provided with a limiting screw for limiting the closing static arc contact rod.
Preferably, a driving contact plate is arranged on the movable cutter arm, and the movable arc contact rod is fixedly connected to the middle of the end part of the outer side of the driving contact plate along the length direction.
Preferably, the moving arc contact rod, the opening and breaking arc contact rod and the closing static arc contact rod are all copper-tungsten alloy contact rods.
A three-column horizontal rotation type isolating switch comprises a moving knife arm and a fixed contact, wherein the fixed contact comprises a fixed contact piece, the fixed contact is of a C-shaped groove structure, the fixed contact piece is arranged on the inner wall of the C-shaped groove, the moving knife arm extends into the C-shaped groove to be in contact with the fixed contact piece, and preferably, the three-column horizontal rotation type isolating switch further comprises the on-off switching device.
Compared with the prior art, the on-off device of the three-column horizontal rotary isolating switch provided by the invention has the following beneficial effects:
the invention provides an on-off device of a three-column horizontal rotary isolating switch, which comprises a movable arc contact rod and a switching-off arc-breaking contact rod, wherein the movable arc contact rod is arranged at the free end of a movable knife arm of the three-column horizontal rotary isolating switch, and the switching-off arc-breaking contact rod protrudes out of a static contact; when the switch is switched on, the movable arc contact rod contacts the switch-off arc-breaking contact rod, the switch-off arc-breaking contact rod rotates under the action of the movable arc contact rod, and after the movable arc contact rod passes over the switch-off arc-breaking contact rod, the switch-off arc-breaking contact rod returns to a natural state under the action of gravity; during brake opening, the movable arc contact rod contacts the brake opening and arc breaking contact rod, the brake opening and arc breaking contact rod rotates under the action of the movable arc contact rod, and after the movable arc contact rod crosses the brake opening and arc breaking contact rod, the brake opening and arc breaking contact rod returns to a natural state under the action of the first torsion spring. The auxiliary contact rod structure is improved on the basis of meeting the working condition requirement, the effects of simple structure and low cost are realized, and the difficulty of installation and maintenance is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of an assembly of a three-post horizontal rotary isolator switch in accordance with an embodiment of the present invention;
fig. 2 is a schematic view of the overall assembly of the on/off switching device in one embodiment of the present invention;
fig. 3 is a first state diagram of closing of the opening and closing device in an embodiment of the present invention;
fig. 4 is a second state diagram of the closing of the opening and closing device in an embodiment of the present invention;
fig. 5 is a third state diagram of the closing of the opening and closing device in an embodiment of the present invention;
fig. 6 is a fourth state diagram of the closing of the opening and closing device in an embodiment of the present invention;
fig. 7 is a first state diagram of the opening and closing device for opening and closing according to an embodiment of the present invention;
FIG. 8 is a second state diagram of the opening and closing device for opening and closing in accordance with an embodiment of the present invention;
FIG. 9 is a third state diagram of the opening/closing device for opening/closing in accordance with one embodiment of the present invention;
fig. 10 is a fourth state diagram of the opening and closing device for opening and closing according to an embodiment of the present invention;
the reference numbers illustrate:
an on-off closing device 100;
a switching-off arc-breaking contact rod 200; a first pivot pin 210; a first rotation block 211; an adjusting washer; a first torsion spring 220;
a closing static arc feeler lever 300; a second pivot pin 310; a second turning block 311; a second torsion spring 320;
a three-post horizontally rotating isolator switch 400; a movable cutter arm 410; a movable contact 411; a main touch pad 412; a moving arc feeler lever 413; a static contact 420; a static contact 421;
an auxiliary copper strand 510; a spacing pin 520; a limit screw 530.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1 to 10, the present invention provides an opening/closing device 100 for a three-pole horizontal rotary type disconnecting switch. The on/off switching device 100 includes an auxiliary trolley assembly (not shown); wherein the auxiliary trolley bar assembly comprises: and the movable arc contact rod 413 is arranged at the free end of the movable knife arm 410 of the three-column horizontal rotation type isolating switch 400 and is electrically connected with the movable contact 411 of the movable knife arm 410.
Specifically, in this embodiment, the moving blade arm 410 is a main conductive arm of the three-column horizontal rotation type isolating switch 400, and is also a mounting carrier of the moving arc contact rod 413, the middle of the moving blade arm 410 is rotatably connected to an insulating pillar (not shown), two ends of the moving blade arm 410 are free ends of the moving blade arm 410, two ends are both provided with moving contacts 411, the moving arc contact rod 413 is mounted on the moving contact 411 on the moving blade arm 410 and is electrically connected with the moving contacts 411, so as to perform double functions of assisting circuit conductive contact and driving a device on the side of the static contact 420.
The opening and breaking arc contact lever 200 is electrically connected with a static contact 421 of a static contact 420 of the three-column horizontal rotation type isolating switch 400, the opening and breaking arc contact lever 200 protrudes out of the static contact 420 and is rotatably connected to one side of the static contact 420 through a first rotating pin 210, a first torsion spring 220 is arranged on the first rotating pin 210, the opening and breaking arc contact lever 200 protrudes out of the static contact 420 in a natural state, the first torsion spring 220 extends in an inclined direction towards a closing direction and is positioned on a closing path of the movable arc contact lever 413, and the distance from the first rotating pin 210 to the inner wall of the static contact 420 in the horizontal direction is greater than the length of the opening and breaking arc contact lever 200.
It should be understood that the static contact 420 in this embodiment is in a C-shaped groove shape, and functions to pass through a normal operation current after being switched on, and also is a mounting carrier of the switching-off arc-breaking contact rod 200, the static contact 421 is disposed on an inner wall of the static contact 420 in a vertical direction, during switching on, the moving contact 411 enters the static contact 420 under the driving of horizontal rotation of the moving blade arm 410 and contacts with the static contact 421, and springs (not shown) are disposed outside two inner walls of the static contact 420 in the vertical direction, and provide an internal elastic clamping force for keeping a main circuit in electrical contact with the moving contact 411.
It should be noted that the closing direction refers to the moving direction of the moving contact 411 toward the static contact 420, the opening arc-breaking contact rod 200 is rotatably connected to one side of the static contact 420, one side of the static contact 420 refers to the side of the static contact 420 along the C-shaped groove direction, the installation position of the opening arc-breaking contact rod 200 is arranged in cooperation with the moving arc contact rod 413 and is located on the closing path of the moving arc contact rod 413, that is, when the three-column horizontal rotation type isolating switch 400 closes or opens, the moving arc contact rod 413 can be in contact with the opening arc-breaking contact rod 200; meanwhile, the opening arc-breaking contact lever 200 is connected to one side of the fixed contact 420 through the first rotating pin 210, the first rotating pin 210 is further provided with a first torsion spring 220, the first torsion spring 220 is used for resetting the opening arc-breaking contact lever 200, and the natural state refers to a state without applying any other external force, namely, the opening arc-breaking contact lever is under the action of the first torsion spring 220 in a state without receiving any other external force, and is directed to protrude from the fixed contact 420 and extend in a direction inclined towards the fixed contact 421.
When the three-column horizontal rotation type isolating switch 400 is switched on, the movable arc contact rod 413 contacts the switching-off and arc-breaking contact rod 200, the switching-off and arc-breaking contact rod 200 rotates under the action of the movable arc contact rod 413, and after the movable arc contact rod 413 passes over the switching-off and arc-breaking contact rod 200, the switching-off and arc-breaking contact rod 200 returns to a natural state under the action of gravity; during the three-column horizontal rotation type isolator 400 separating brake, move the contact of arc feeler lever 413 the separating brake arc-breaking feeler lever 200, the separating brake arc-breaking feeler lever 200 is in rotate under the effect of moving the arc feeler lever 413, move the arc feeler lever 413 and cross behind the separating brake arc-breaking feeler lever 200, the separating brake arc-breaking feeler lever 200 is replied to natural state under the effect of first torsional spring 220.
It should be noted that the moving arc contact rod 413 is arranged on the moving contact 411, when the switch is switched on, the moving contact 411 drives the moving arc contact rod 413 to move towards the static contact 420 together, the moving arc contact rod 413 contacts the switching-off and arc-breaking contact rod 200 firstly, because the distance from the first rotating pin 210 to the inner wall of the static contact 420 in the horizontal direction is greater than the length of the switching-off and arc-breaking contact rod 200, when the switch is switched on to a certain extent, the moving arc contact rod 413 can be separated from the switching-off and arc-breaking contact rod 200, and the switching-off and arc-breaking contact rod 200 returns to the natural state under the action of gravity; during opening, the moving contact 411 starts to be separated from the static contact 420, the moving arc contact rod 413 starts to contact the opening arc-breaking contact rod 200, the opening section arc contact rod is driven by the moving arc contact rod 413 to rotate towards the direction far away from the static contact 421, at the moment, the first torsion spring 220 starts to accumulate elastic energy, after the moving arc contact rod 413 crosses the opening arc-breaking contact rod 200, the opening arc-breaking contact rod 200 can rebound rapidly under the action of the first torsion spring 220 and is separated from the moving arc contact rod 413 rapidly, rapid cutting of arc current under a high-current working condition is achieved, arc ablation time of the contact is shortened, burning loss of the contact is reduced, and the service life of the contact is prolonged.
In addition, it should be emphasized that, the arrangement of the first rotating pin 210 and the first torsion spring 220 has a simple structure and a low cost, so that the switching-off arc-breaking contact rod 200 and the moving arc contact rod 413 can realize the switching-on and switching-off of high-parameter bus conversion current, and can meet the requirements of working conditions.
As a preferred embodiment of the present invention, the opening/closing device 100 further includes a closing static arc contact rod 300, which is disposed at a position of the static contact 420 that is matched with the moving arc contact rod 413, and is electrically connected to the static contact 421; the closing static arc contact lever 300 is rotatably connected to one side of the static contact 420 through a second rotating pin 310, a second torsion spring 320 is arranged on the second rotating pin 310, in a natural state of the second torsion spring 320, the closing static arc contact lever 300 protrudes from the static contact 420, extends in an inclined direction away from the static contact 421, and is located on a closing path of the moving arc contact lever 413, and the distance from the second rotating pin 310 to the inner wall of the static contact 420 in the horizontal direction is smaller than the length of the closing static arc contact lever 300; when the three-column horizontal rotation type disconnecting switch 400 is switched on, the moving arc contact rod 413 contacts the switching-on static arc contact rod 300, and the switching-on static arc contact rod 300 rotates along the switching-on direction under the action of the moving arc contact rod 413 until the moving contact 411 contacts the static contact 421.
As will be understood by those skilled in the art, the closing static arc contact rod 300 is disposed on one side rotatably connected to the static contact 420, the side of the static contact 420 refers to a side surface of the static contact 420 along the direction of the C-shaped groove, namely, the switch-on static arc contact rod 300 and the switch-off breaking arc contact rod 200 are arranged at different positions on the same side, the switch-on static arc contact rod 300 is arranged at a position matched with the movable arc contact rod 413 and is positioned on the switch-on path of the movable arc contact rod 413, that is, when the three-column horizontal rotary isolating switch 400 is switched on or switched off, the moving arc contact rod 413 can be in contact with the static arc contact rod 300, the static arc contact rod 300 is connected to one side of the static contact 420 through the second rotating pin 310, the second rotating pin 310 is further provided with the second torsion spring 320, the static arc contact rod 300 is under the action of the first torsion spring 220 in a state of not being subjected to any other external force, which is directed to protrude convexly from the stationary contact 420 and extends obliquely away from the stationary contact 421.
Specifically, during closing, the movable contact 411 starts to move towards the fixed contact 420, the movable arc contact rod 413 contacts the closing static arc contact rod 300 first, the closing static arc contact rod 300 rotates in the closing direction under the action of the movable arc contact rod 413, and because the distance from the second rotating pin 310 to the inner wall of the fixed contact 420 in the horizontal direction is smaller than the length of the closing static arc contact rod 300, after closing is completed, the movable contact 411 contacts the static contact plate 421, the movable arc contact rod 413 always keeps contact with the closing static arc contact rod 300, the second rotating pin 310 and the second torsion spring 320 are arranged, the structure is simple, the cost is low, the closing static arc contact rod 300 and the movable arc contact rod 413 can achieve the effect of switching on bus conversion current, and reliable conductive contact is always kept after closing.
Furthermore, the fixed ends of the closing static arc contact bar 300 and the opening and closing arc contact bar 200 are both provided with an auxiliary copper stranded wire 510, and the auxiliary copper stranded wire 510 is used for electrically connecting the closing static arc contact bar 300 and the opening and closing arc contact bar 200 with the fixed contact 420 respectively.
It should be understood that, the fixed end of closing static arc feeler lever 300 refers to the tip of the junction of closing static arc feeler lever 300 and second rotating pin 310, the fixed end of separating brake arc breaking feeler lever 200 refers to the tip of the junction of separating brake arc breaking feeler lever 200 and first rotating pin 210, the mode of electricity connection includes a plurality of, can set up according to actual need, set up supplementary copper strand wires 510 in this embodiment and carry out the electricity connection, supplementary copper strand wires 510 are the flexible conductor, can let closing static arc feeler lever 300 and separating brake arc breaking feeler lever 200 freely swing when electrically conductive, and is simple and practical.
As a preferred embodiment of the present invention, a first rotating block 211 is rotatably connected to an outer wall of the first rotating pin 210, and the first rotating block 211 is fixedly connected to the opening and breaking arc contact rod 200; the outer wall of the second rotating pin 310 is rotatably connected with a second rotating block 311, and the second rotating block 311 is fixedly connected with the closing static arc contact rod 300. In detail, the opening and closing arc-breaking contact rod 200 is connected with the first rotating pin 210 through the first rotating block 211, the closing static arc-breaking contact rod 300 is connected with the second rotating pin 310 through the second rotating block 311, and the rotating blocks are arranged so that the opening and closing arc-breaking contact rod 200 and the closing static arc-breaking contact rod 300 can be fixed more stably.
In a preferred embodiment of the present invention, the outer walls of the first pivot pin 210 and the second pivot pin 310 are provided with insulating bushings (not shown). It should be understood that, in order to prevent the current from passing through the first rotating pin 210 and the second rotating pin 310, the insulation arrangement may be implemented in various ways, in this embodiment, an insulation sleeve is provided between the first rotating pin 210 and the opening and closing arcing contact rod 200, and an insulation sleeve is provided between the second rotating pin 310 and the closing static arcing contact rod 300, which is simpler to set up and more convenient to disassemble.
Further, an adjusting washer (not shown) for adjusting the position of the opening and breaking arc contact rod 200 is further disposed on the outer wall of the first rotating pin 210, so that the opening and breaking arc contact rod 200 and the closing static arc contact rod 300 are arranged in a staggered manner. Specifically, the directions of the two contact rods of the opening arc breaking contact rod 200 and the closing static arc contact rod 300 are opposite, in order to prevent the opening arc breaking contact rod 200 from being in contact with the closing static arc contact rod 300, an adjusting washer is arranged on the outer wall of the first rotating pin 210, the adjusting washers with different sizes are selected according to installation conditions to adjust the distance from the opening arc breaking contact rod 200 to the static contact 420, so that the opening arc breaking contact rod 200 and the closing static arc contact rod 300 are arranged in a staggered mode, and installation and disassembly of the adjusting washers are simple.
As a preferred embodiment of the present invention, the fixed contact 420 is provided with a limit pin 520 for providing a limit fulcrum for the opening and closing arc-breaking contact rod 200 and the closing arc-breaking contact rod 300, and one side of the limit pin 520 is further provided with a limit screw 530 for limiting the closing arc-breaking contact rod 300. It should be understood that the limiting pin 520 is installed on the isolating static contact 420 of the three-column horizontal rotation type isolating switch 400, located between the opening arc-breaking contact rod 200 and the closing arc-breaking contact rod 300, and provides a limiting fulcrum for the opening arc-breaking contact rod 200 and the closing arc-breaking contact rod 300, and meanwhile, a limiting screw 530 is further provided on one side of the limiting pin 520, and the limiting screw 530 is used for providing limiting and maintaining for the closing arc-breaking contact rod 300.
Referring to fig. 2, a driving contact plate 412 is disposed on the movable knife arm 410, and the movable arc contact rod 413 is fixedly connected to the middle of the outer end of the driving contact plate 412 along the length direction. It should be noted that the movable contact 411 is arranged on the movable blade arm 410, the movable contact 411 includes a driving contact plate 412 and a movable arc contact rod 413, the movable arc contact rod 413 is arranged on the driving contact plate 412, and the position of the movable arc contact rod 413 can be adjusted according to actual conditions.
Further, the movable arc feeler lever 413, the opening and breaking arc feeler lever 200, and the closing and static arc feeler lever 300 are all copper-tungsten alloy feeler levers. It should be understood by those skilled in the art that the materials of the opening and closing arc breaking contact rod 200 and the closing static arc contact rod 300 can be selected according to different applications, and preferably, in the present embodiment, a copper-tungsten alloy is selected, which has good electrical and thermal conductivity, high strength, high density, can withstand high temperature, and has certain plasticity.
The invention provides a three-column horizontal rotary isolating switch 400 which comprises a moving cutter arm 410 and a static contact 420, wherein the static contact 420 comprises a static contact piece 421, the static contact 420 is of a C-shaped groove structure, the static contact piece 421 is arranged on the inner wall of the C-shaped groove, the moving cutter arm 410 extends into the C-shaped groove to be contacted with the static contact piece 421, and the three-column horizontal rotary isolating switch 400 further comprises the on-off switching device 100.
The operation principle of the opening/closing device 100 of the present embodiment is as follows:
please refer to fig. 3-6 for the closing process:
in fig. 3, as the moving blade arm 410 of the three-column horizontal rotary type disconnecting switch 400 rotates in the closing direction, the moving arc contact rod 413 attached to the driving contact plate 412 of the three-column horizontal rotary type disconnecting switch 400 first touches the closing static arc contact rod 300 to start to conduct the auxiliary circuit, so that the bus closing conversion current is realized, the contact rod material with high arc temperature resistance generates slight arc burning, and the through-flow main contact of the disconnecting switch is protected from being burned due to the first contact; in fig. 4, as the moving arc contact rod 413 continues to move in the closing direction, the moving arc contact rod 300 is toggled to swing in the closing direction, and the opening and breaking arc contact rod 200 is toggled to swing freely in the closing direction; in fig. 5, the moving arc contact rod 413 is switched in place, and simultaneously the static arc contact rod 300 is switched on and swings to the limit position in the switching-on direction, the switching-off arc-breaking contact rod 200 is separated from the moving arc contact rod 413, and self-reset is started under the gravity; in fig. 6, as the movable blade arm 410 rotates, that is, around the axis of the movable blade arm 410, the active contact plate 412 turns and closes in place, the main conductive loop is connected, and at this time, the opening and closing arc contact rod 200 is completely reset, and the closing process is completed.
Please refer to fig. 7-10 for the opening process:
in fig. 7, the movable arc contact rod 413 starts to move out of the opening state, the movable arc contact rod 413 still keeps contact with the closing static arc contact rod 300, and the movable arc contact rod 413 starts to contact the opening and breaking contact rod 200 and stirs the opening and breaking contact rod to swing together in the opening direction, the opening direction is opposite to the closing direction, and the contact force between the movable arc contact rod 413 and the opening and breaking contact rod 200 is gradually increased due to the clockwise torsion of the first torsion spring 220; in fig. 8, the static arc contact lever 300 stops swinging outward after returning to the original position, and the movable arc contact lever 413 toggles the opening arc-breaking contact lever 200 to continue swinging in the opening direction; in fig. 9, the opening arc-breaking contact lever 200 is out of contact with the movable arc-breaking contact lever 413, the opening arc-breaking contact lever 200 is quickly reset and rebounded under the action of the torsion of the first torsion spring 220, and the rebounding process quickly breaks the electric arc between the movable arc-breaking contact lever 413 and the opening arc-breaking contact lever 200 to break the circuit; in fig. 10, the movable arc contact rod 413 is completely separated, the switching-off arc-breaking contact rod 200 is completely reset, and the switching-off arc-breaking process is completed.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are encompassed by the scope of the present invention.
Claims (10)
1. The utility model provides a three post horizontal rotation formula isolator's device that opens and shuts which characterized in that: comprises an auxiliary feeler lever component; wherein the auxiliary trolley bar assembly comprises:
the movable arc contact rod is arranged at the free end of a movable knife arm of the three-column horizontal rotary isolating switch and is electrically connected with a movable contact of the movable knife arm;
the switching-off arc-breaking contact rod is electrically connected with a static contact piece of a static contact of the three-column horizontal rotary isolating switch, the switching-off arc-breaking contact rod protrudes out of the static contact and is rotatably connected to one side of the static contact through a first rotating pin, a first torsion spring is arranged on the first rotating pin, the switching-off arc-breaking contact rod protrudes out of the static contact in a natural state, the first torsion spring obliquely extends towards the switching-on direction and is positioned on the switching-on path of the moving arc contact rod, and the distance from the first rotating pin to the inner wall of the static contact along the horizontal direction is greater than the length of the switching-off arc-breaking contact rod;
when the three-column horizontal rotary isolating switch is switched on, the movable arc contact rod contacts the switching-off and arc-breaking contact rod, the switching-off and arc-breaking contact rod rotates under the action of the movable arc contact rod, and the switching-off and arc-breaking contact rod returns to a natural state under the action of gravity after the movable arc contact rod passes over the switching-off and arc-breaking contact rod; during three-column horizontal rotation type isolator separating brake, move the arc feeler lever contact the separating brake arc contact lever that breaks, the separating brake arc contact lever that breaks is in rotate under the effect of moving the arc feeler lever, move the arc feeler lever and cross behind the separating brake arc contact lever that breaks, the separating brake arc contact lever that breaks replies to natural state under the effect of first torsional spring.
2. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 1, wherein: the switching-on/off device also comprises a switching-on static arc contact rod which is arranged at the position of the static contact matched with the dynamic arc contact rod and is electrically connected with the static contact piece;
the static arc contact rod for closing is rotatably connected to one side of the static contact through a second rotating pin, a second torsion spring is arranged on the second rotating pin, the static arc contact rod for closing protrudes from the static contact in a natural state, the static arc contact rod for closing extends in a direction away from the static contact in an inclined mode and is located on a closing path of the movable arc contact rod, and the distance between the second rotating pin and the inner wall of the static contact in the horizontal direction is smaller than the length of the static arc contact rod for closing; when the three-column horizontal rotary isolating switch is switched on, the movable arc contact rod is contacted with the static arc contact rod, and the static arc contact rod rotates along the switching-on direction under the action of the movable arc contact rod until the movable contact is contacted with the static contact piece.
3. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: and the fixed ends of the closing static arc contact rod and the opening and breaking arc contact rod are respectively provided with an auxiliary copper stranded wire, and the auxiliary copper stranded wires are used for electrically connecting the closing static arc contact rod and the opening and breaking arc contact rod with the fixed contact respectively.
4. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: the outer wall of the first rotating pin is rotatably connected with a first rotating block, and the first rotating block is fixedly connected with the switching-off arc-breaking contact rod; the outer wall of the second rotating pin is rotatably connected with a second rotating block, and the second rotating block is fixedly connected with the closing static arc contact rod.
5. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: and the outer walls of the first rotating pin and the second rotating pin are provided with insulating shaft sleeves.
6. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: the outer wall of the first rotating pin is further provided with an adjusting washer for adjusting the position of the opening arc breaking contact lever, so that the opening arc breaking contact lever and the closing static arc contact lever are arranged in a staggered mode.
7. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: the static contact is provided with a limiting pin used for providing a limiting fulcrum for the opening arc breaking contact rod and the closing arc static contact rod, and one side of the limiting pin is also provided with a limiting screw used for limiting the closing arc static contact rod.
8. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 1, wherein: the movable cutter arm is provided with a driving contact plate, and the movable arc contact rod is fixedly connected to the middle of the end part of the outer side of the driving contact plate along the length direction.
9. The opening and closing device of the three-column horizontal rotary isolating switch according to claim 2, wherein: the movable arc contact rod, the opening and breaking arc contact rod and the closing static arc contact rod are all copper-tungsten alloy contact rods.
10. A three-column horizontal rotation type isolating switch comprises a movable cutter arm and a fixed contact, wherein the fixed contact comprises a fixed contact piece, the fixed contact is of a C-shaped groove structure, the fixed contact piece is arranged on the inner wall of the C-shaped groove, and the movable cutter arm extends into the C-shaped groove to be in contact with the fixed contact piece, and the three-column horizontal rotation type isolating switch is characterized by further comprising an on-off device according to any one of the claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038346.7A CN113571373A (en) | 2021-09-06 | 2021-09-06 | Three-column horizontal rotation type disconnecting switch's on-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038346.7A CN113571373A (en) | 2021-09-06 | 2021-09-06 | Three-column horizontal rotation type disconnecting switch's on-off device |
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| Publication Number | Publication Date |
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| CN113571373A true CN113571373A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111038346.7A Pending CN113571373A (en) | 2021-09-06 | 2021-09-06 | Three-column horizontal rotation type disconnecting switch's on-off device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050085A (en) * | 2021-11-29 | 2022-02-15 | 湖南长高高压开关集团股份公司 | Horizontal open type high-voltage isolating switch bus conversion test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003858A (en) * | 2018-09-29 | 2018-12-14 | 湖南长高高压开关有限公司 | High voltage isolator Rapid arc breaking device and its method of operating in on/off switch |
| CN212725133U (en) * | 2020-06-28 | 2021-03-16 | 湖南长高高压开关集团股份公司 | Switching high-parameter bus conversion current device |
| CN215680521U (en) * | 2021-09-06 | 2022-01-28 | 湖南长高高压开关集团股份公司 | Three-column horizontal rotation type disconnecting switch's on-off device |
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2021
- 2021-09-06 CN CN202111038346.7A patent/CN113571373A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003858A (en) * | 2018-09-29 | 2018-12-14 | 湖南长高高压开关有限公司 | High voltage isolator Rapid arc breaking device and its method of operating in on/off switch |
| CN212725133U (en) * | 2020-06-28 | 2021-03-16 | 湖南长高高压开关集团股份公司 | Switching high-parameter bus conversion current device |
| CN215680521U (en) * | 2021-09-06 | 2022-01-28 | 湖南长高高压开关集团股份公司 | Three-column horizontal rotation type disconnecting switch's on-off device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114050085A (en) * | 2021-11-29 | 2022-02-15 | 湖南长高高压开关集团股份公司 | Horizontal open type high-voltage isolating switch bus conversion test device |
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Country or region after: China Address after: 410000 No. 393, section 3, Jinxing North Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Applicant after: Chang Hi-Tech New Technology Co.,Ltd. Applicant after: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. Address before: 410000 No. 393, section 3, Jinxing North Road, economic and Technological Development Zone, Wangcheng District, Changsha City, Hunan Province Applicant before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR GROUP Co.,Ltd. Country or region before: China Applicant before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. |