CN118538569B - A fully enclosed three-position vacuum circuit breaker - Google Patents
A fully enclosed three-position vacuum circuit breaker Download PDFInfo
- Publication number
- CN118538569B CN118538569B CN202410996431.1A CN202410996431A CN118538569B CN 118538569 B CN118538569 B CN 118538569B CN 202410996431 A CN202410996431 A CN 202410996431A CN 118538569 B CN118538569 B CN 118538569B
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- Prior art keywords
- electric contact
- circuit breaker
- contact block
- vacuum circuit
- heat dissipation
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- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000017525 heat dissipation Effects 0.000 claims description 40
- 230000000903 blocking effect Effects 0.000 claims description 20
- 210000003205 muscle Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000005253 cladding Methods 0.000 abstract description 8
- 239000007787 solid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- 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
- H01H33/6606—Terminal arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66223—Details relating to the sealing of vacuum switch housings
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to the field of circuit breakers, in particular to a full-cladding three-station vacuum circuit breaker. The three-station vacuum circuit breaker comprises a three-station vacuum circuit breaker body and a tube middle section, wherein an upper sealing cover and a lower sealing cover are respectively arranged at the upper end and the lower end of the three-station vacuum circuit breaker body, a cover plate is detachably arranged on the front face of the three-station vacuum circuit breaker body, the surface of the cover plate is provided with a concave-convex structure which is attached to the three-station vacuum circuit breaker body, the tube middle section is a middle section part of a solid-sealed polar pole, a first conducting rod and a second conducting rod are respectively arranged at the upper end and the lower end of the tube middle section, a first electric contact block is fixed on the first conducting rod, a second electric contact block is movably arranged on the second conducting rod, the first electric contact block and the second electric contact block are in surface contact, and the second electric contact block is close to the first electric contact block in a normal state. The conductive surface of the circuit breaker can be prevented from being exposed to the external environment, the use is safer, and the collision force generated between the two electric contact blocks during closing can be effectively reduced.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to a full-cladding three-station vacuum circuit breaker.
Background
The three-station vacuum circuit breaker product is a circuit breaker integrating a vacuum circuit breaker, a disconnecting switch, a grounding switch and a sensor. Besides the structure, the vacuum arc-extinguishing chamber and the interlocking mechanism are further arranged, so that when the isolating switch is switched on, the grounding switch cannot be switched on, and when the grounding switch is switched on, the isolating switch cannot be switched on.
The vacuum arc-extinguishing chamber belongs to one of the most core components of the three-station vacuum circuit breaker, and the external operating mechanism drives the inner part of the vacuum arc-extinguishing chamber to be contacted with and separated from a pair of electric contact blocks respectively arranged on the movable conducting rod and the static conducting rod to control the switching-on and switching-off of the vacuum arc-extinguishing chamber, so that the working performance of the vacuum arc-extinguishing chamber directly influences the performance of the whole three-station vacuum circuit breaker.
The operating device can apply great force to the movable conducting rod when the vacuum arc-extinguishing chamber is switched on, the movable conducting rod is influenced by the operating device and can be punched to the static conducting rod at a high speed to enable the two electric contact blocks to collide with each other in the front direction, the impact force is high, the vacuum arc-extinguishing chamber can generate great vibration in the process, and the frequent switching of the electric contact blocks can easily cause the damage of the vacuum arc-extinguishing chamber.
Disclosure of Invention
Based on the above, it is necessary to provide a fully-covered three-station vacuum circuit breaker, which can avoid the exposure of the conductive surface of the circuit breaker to the external environment, is safer to use, and can effectively reduce the collision force generated between two electric contact blocks during closing.
The invention provides a full-cladding three-station vacuum circuit breaker, which comprises:
The three-station vacuum circuit breaker comprises a three-station vacuum circuit breaker body, wherein an upper sealing cover and a lower sealing cover are respectively arranged at the upper end and the lower end of the three-station vacuum circuit breaker body, a cover plate is detachably arranged on the front surface of the three-station vacuum circuit breaker body, and the surface of the cover plate is provided with a concave-convex structure which is attached to the three-station vacuum circuit breaker body;
The tube middle section is a middle section part of the solid-sealed polar pole, the upper end and the lower end of the tube middle section are respectively provided with a first conducting rod and a second conducting rod, a first electric contact block is fixed on the first conducting rod, a second electric contact block is movably arranged on the second conducting rod, the first electric contact block and the second electric contact block are in surface contact, and in normal state, the second electric contact block is towards the first electric contact block, the inner surface of the tube middle section is provided with a plurality of groups of limiting brackets, each group of limiting brackets comprises two limiting brackets which are respectively positioned at the upper end and the lower end of the tube middle section, the plurality of groups of limiting brackets are arranged in an annular array, a shielding cover is fixedly clamped between the plurality of groups of limiting brackets, a plurality of annular heat dissipation pieces are arranged on the outer surface of the tube middle section along the vertical direction at intervals, each annular heat dissipation piece comprises an annular heat dissipation plate and an annular heat dissipation cone plate, the inner ring of the annular heat dissipation cone plate is connected with the annular heat dissipation plate, a plurality of heat dissipation holes are formed in an annular array, the outer surface of the tube middle section is coiled with the first electric contact block, a plurality of the second electric contact blocks are arranged in an annular heat dissipation groove, a plurality of the second electric contact grooves are respectively arranged at the top end of the second electric contact groove, a plurality of the top end of the spring blocks are fixedly arranged in the annular heat dissipation groove is fixedly, a plurality of the top end of the spring blocks are fixedly arranged in the annular contact groove, and the top end of the spring is fixedly arranged in the annular groove, and the top end is fixedly arranged in the spring groove fixedly, respectively groove is fixedly arranged in the top groove, and top end is fixedly inside the top end tank fixedly is fixedly mounted in the upper end tank. The utility model provides a mounting cavity inner wall is annular array and is provided with a plurality of spiral muscle, the fixed block outer wall is annular array and has seted up a plurality of helicla flute, the activity joint of spiral muscle is in the helicla flute, slot has been seted up to the bottom center department of first electric contact piece, second electric contact piece is run through to the activity of second electric contact piece tip is in and peg graft in the slot, locating piece one end is connected the bottom of first electric contact piece, the locating piece other end winds first electric contact piece axis direction is along clockwise or anticlockwise slope setting, the helicla flute with the spiral direction of spiral muscle with the inclination of locating piece tip is opposite, the locating piece comprises first blocking portion and first straight inserting portion, the top of first straight inserting portion is the top of locating piece, first blocking portion is located first straight inserting portion is along clockwise or anticlockwise one side, first blocking portion with first straight inserting portion surface constitutes an arc protruding of slope, the locating slot comprises second blocking portion and second straight inserting portion around the axis direction, second straight inserting portion is located the second straight inserting portion is the top of second straight inserting portion is located clockwise or anticlockwise protruding portion, the locating piece is located the second straight inserting portion top of the locating piece is located the top of the locating piece is located anticlockwise protruding portion.
Above-mentioned full cladding formula three-position vacuum circuit breaker, at first install upper cover and lower closing cap at the upper and lower both ends of three-position vacuum circuit breaker body when using, accomplish the fender that seals at both ends about the three-position vacuum circuit breaker body, install preceding closing cap at three-position vacuum circuit breaker body front side afterwards to make preceding closing cap laminate on the solid encapsulation utmost point post of three-position vacuum circuit breaker body, accomplish the cladding to three-position vacuum circuit breaker body, avoid the conducting surface of circuit breaker to expose in external environment, use safelyr. When closing a switch, the second conducting rod moves to the first conducting rod, and the surface of the second electric contact block is attached to the surface of the first electric contact block, when two electric contact blocks are contacted, the second electric contact block can slide along the second conducting rod under the influence of the abutting force, so that the collision generated between the second electric contact block and the first electric contact block is reduced, and the collision force generated between the two electric contact blocks during closing the switch is effectively reduced. When the switch is opened, the second conducting rod is firstly far away from the first conducting rod, and after the second conducting rod moves for a set distance, the second electric contact block is driven by the second conducting rod and separated from the surface of the first electric contact block.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a circuit breaker provided by the invention;
Fig. 2 is a schematic diagram of a split structure of a circuit breaker provided by the invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of an encapsulated pole provided by the present invention;
FIG. 4 is a schematic view of a cross-sectional structure of a tube according to the present invention;
FIG. 5 is a schematic view showing the disassembly of the inner structure of the middle section of the pipe provided by the invention;
FIG. 6 is a schematic cross-sectional view of a second electrical contact according to the present invention;
Fig. 7 is a schematic perspective view of a first electrical contact block according to the present invention;
fig. 8 is a schematic diagram of a matching structure of a blocking portion and an in-line portion provided by the present invention.
Reference numerals:
100. The pipe comprises a fixing frame, 110, a longitudinal limit rib, 200, a fixed sealing polar column, 210, a pipe middle section, 211, a limit bracket, 220, an annular heat dissipation piece, 221, an annular heat dissipation plate, 2211, a heat dissipation hole, 222, an annular heat dissipation vertebral plate, 230, a first conducting rod, 240, a first electric contact block, 241, a positioning block, 2411, a first blocking part, 2412, a first straight inserting part, 242, a slot, 250, a second conducting rod, 260, a second electric contact block, 261, a mounting cavity, 262, a spiral rib, 263, a first mounting groove, 264, a positioning groove, 2641, a second blocking part, 2642, a second straight inserting part, 270, a fixing block, 271, a second mounting groove, 272, a spiral groove, 280, a spring, 290, a shielding cover, 300, an isolating switch, 400, a grounding switch, 500, a control box, 600, an upper sealing cover, 610, a first arc plate, 611, a first arc-shaped cover, 700, a lower sealing cover, 710, a second arc-shaped cover, 720, a second arc-shaped cover, 800, a front arc-shaped cover, 810, a liquid cooling limit cover and 900.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A fully encapsulated three-position vacuum circuit breaker according to the present invention is described below with reference to fig. 1 to 8.
As shown in fig. 1 to 3, in one embodiment, the fully-covered three-station vacuum circuit breaker comprises a three-station vacuum circuit breaker body and a tube middle section 210, wherein an upper sealing cover 600 and a lower sealing cover 700 are respectively installed at the upper end and the lower end of the three-station vacuum circuit breaker body, a cover plate 810 is detachably installed on the front surface of the three-station vacuum circuit breaker body, a concave-convex structure (not shown in the drawings) attached to the three-station vacuum circuit breaker body is arranged on the surface of the cover plate 810, the tube middle section 210 is a middle section part of a solid sealing pole 200, a first conducting rod 230 and a second conducting rod 250 are respectively arranged at the upper end and the lower end of the tube middle section 210, a first electric contact block 240 is fixed on the first conducting rod 230, a second electric contact block 260 is movably installed on the second conducting rod 250, the first electric contact block 240 and the second electric contact block 260 are in surface contact, and the second electric contact block 260 approaches to the first electric contact block 240 in a normal state.
Specifically, when in use, the upper cover 600 and the lower cover 700 are firstly installed at the upper end and the lower end of the three-station vacuum circuit breaker body, the sealing of the upper end and the lower end of the three-station vacuum circuit breaker body is completed, the front cover 800 is then installed at the front side of the three-station vacuum circuit breaker body, the front cover 800 is attached to the solid sealing pole 200 of the three-station vacuum circuit breaker body, the coating of the three-station vacuum circuit breaker body is completed, the second conducting rod 250 moves towards the first conducting rod 230 when in switching on, the surface of the second conducting rod 260 is attached to the surface of the first conducting rod 240, when the two conducting rods are in contact, the second conducting rod 260 slides along the second conducting rod 250 under the influence of the abutting force, so that the collision generated between the second conducting rod 260 and the first conducting rod 240 is reduced, when in switching on, the second conducting rod 250 is firstly far away from the first conducting rod 230, and after the second conducting rod 250 moves for a set distance, the second conducting rod 260 is driven by the second conducting rod 250 and is separated from the surface of the first conducting rod 240.
The above-mentioned full cladding formula three-position vacuum circuit breaker, at first install upper cover 600 and lower closing cap 700 at the upper and lower both ends of three-position vacuum circuit breaker body when using, accomplish the shutoff at three-position vacuum circuit breaker body upper and lower both ends, install preceding closing cap 800 in three-position vacuum circuit breaker body front side afterwards to make preceding closing cap 800 laminate on three-position vacuum circuit breaker body's solid seal post 200, accomplish the cladding to three-position vacuum circuit breaker body, avoid the conducting surface of circuit breaker to expose in the external environment, use safelyr. When the switch-on is performed, the second conductive rod 250 moves towards the first conductive rod 230, and the surface of the second electric contact block 260 is attached to the surface of the first electric contact block 240, when the two electric contact blocks are in contact, the second electric contact block 260 can slide along the second conductive rod 250 under the influence of the abutting force, so that the collision generated between the second electric contact block 260 and the first electric contact block 240 is reduced, and the collision force generated between the two electric contact blocks during the switch-on is effectively reduced. When the switch is opened, the second conductive rod 250 is first far away from the first conductive rod 230, and after the second conductive rod 250 moves a set distance, the second electrical contact block 260 is driven by the second conductive rod 250 and separated from the surface of the first electrical contact block 240.
In one embodiment, the three-station vacuum circuit breaker body comprises a fixing frame 100, a solid sealed pole 200, a disconnecting switch 300, a grounding switch 400, a control box 500, an upper sealing cover 600, a lower sealing cover 700 and a front sealing cover 800, wherein the fixing frame 100 comprises a back plate and two side plates, the three solid sealed poles 200 are arranged on the back plate of the fixing frame 100 at intervals, the disconnecting switch 300 is arranged at the top end of the solid sealed pole 200, the grounding switch 400 is arranged at the bottom end of the solid sealed pole 200, the control box 500 is fixed on the side plates of the fixing frame 100 and used for controlling the opening and closing states of the disconnecting switch 300 and the grounding switch 400, the upper sealing cover 600 and the lower sealing cover 700 are respectively used for sealing the top end and the bottom end of the fixing frame 100, and the front sealing cover 800 is used for sealing the front side of the fixing frame 100.
Specifically, the upper cover 600 includes a first arc 610 and a first arc 620, the first arc 620 is located on the front side of the first arc 610, the first arc and the first arc form a first flow guiding cavity 611, the lower cover 700 includes a second arc 710 and a second arc 720, the second arc 720 is located on the front side of the second arc 710, the second arc and the second arc form a second flow guiding cavity 711, a set of longitudinal spacing ribs 110 are disposed at the upper and lower ends of two side plates of the fixing frame 100, the set of spacing ribs includes at least three longitudinal spacing ribs 110, the three longitudinal spacing ribs 110 are disposed at intervals along the horizontal direction, the diameter of the longitudinal spacing rib 110 near the front side of the fixing frame 100 is greater than the diameter of the longitudinal spacing rib 110 far away from the front side of the fixing frame 100, the front cover 800 includes a cover 810 and four spacing plates 820 located at corners of the cover 810, and longitudinal spacing grooves 821 corresponding to the spacing ribs are formed in the inner side surfaces of the spacing plates 820.
As shown in fig. 4 and fig. 5, in one embodiment, the inner surface of the middle tube section 210 is provided with a plurality of groups of limiting brackets 211, each group of limiting brackets 211 comprises two limiting brackets 211 respectively positioned at the upper end and the lower end of the middle tube section 210, the plurality of groups of limiting brackets 211 are arranged in an annular array, and a shielding cover 290 is clamped and fixed between the plurality of groups of limiting brackets 211.
Specifically, the position of the tube middle section 210 is a vacuum arc extinguishing chamber, a space is provided between the limit brackets 211 at the upper and lower ends of the tube middle section 210, the two lower ends of the shielding cover 290 are respectively abutted on the limit brackets 211 at the upper and lower ends of the tube middle section 210, and the outer wall of the shielding cover 290 is attached to the inner wall of the tube middle section 210 for conducting heat to the outer wall of the tube middle section 210.
In one embodiment, a plurality of annular heat dissipation members 220 are disposed on the outer surface of the tube middle section 210 along the vertical direction at intervals, the annular heat dissipation members 220 comprise an annular heat dissipation plate 221 and an annular heat dissipation cone 222, the inner ring of the annular heat dissipation cone 222 is connected with the outer ring of the annular heat dissipation plate 221, a plurality of heat dissipation holes 2211 are formed in the annular heat dissipation plate 221 in an annular array, a liquid cooling tube 900 is coiled on the outer surface of the tube middle section 210, and the liquid cooling tube 900 is inserted into the plurality of heat dissipation holes 2211.
Specifically, the inner ring of the annular heat dissipation cone 222 is the bottom of the conical structure, the outer ring of the annular heat dissipation cone 222 is the top of the conical structure, the liquid-cooled tube 900 is inserted into the heat dissipation holes 2211 along the vertical direction when inserting the heat dissipation holes 2211, then the adjacent heat dissipation holes 2211 with the same longitudinal axis are inserted in opposite directions by bending, and so on, since the thickness of the annular heat dissipation plate 221 is thicker than that of the annular heat dissipation cone 222, the heat dissipation effect of the annular heat dissipation plate 221 can be effectively increased by inserting the liquid-cooled tube 900.
As shown in fig. 6, in one embodiment, a mounting cavity 261 is provided inside the second electrical contact block 260, the bottom end of the second electrical contact block 260 is opened, a fixing block 270 is movably clamped in the mounting cavity 261, the fixing block 270 is fixed on the second conductive rod 250, a second mounting groove 271 is provided at the top end of the fixing block 270, a first mounting groove 263 is provided at the top end of the mounting cavity 261, a spring 280 is sleeved on the second conductive rod 250, and two ends of the spring 280 are respectively fixed in the first mounting groove 263 and the second mounting groove 271.
Specifically, when the second electrical contact block 260 and the first electrical contact block 240 are contacted, an abutting force is generated between the two electrical contact blocks, and since the first electrical contact block 240 is fixedly arranged and the second electrical contact block 260 is movably arranged, the second electrical contact block 260 can be abutted to move along the second conductive rod 250, and the arrangement of the spring 280 can enable the second electrical contact block 260 to be always attached to the first electrical contact block 240 in the moving process, so that stable surface contact is generated between the two electrical contact blocks.
As shown in fig. 7, in one embodiment, the bottom end of the first electrical contact block 240 is provided with a plurality of positioning blocks 241 in an annular array, the top end of the second electrical contact block 260 is provided with a plurality of positioning grooves 264 in an annular array, the inner wall of the installation cavity 261 is provided with a plurality of spiral ribs 262 in an annular array, the outer wall of the fixed block 270 is provided with a plurality of spiral grooves 272 in an annular array, and the spiral ribs 262 are movably clamped in the spiral grooves 272.
Specifically, when the second electrical contact block 260 abuts against the first electrical contact block 240, the positioning block 241 will be clamped in the positioning groove 264, and in the process of clamping the positioning block 241 into the positioning groove 264, the second electrical contact block 260 will rotationally sleeve the fixing block 270, based on the rotational force, the fitting connection between the positioning block 241 and the positioning groove 264 can be tighter.
It should be noted that the first electrical contact 240 is rotatably mounted on the first conductive rod 230, and a torsion spring 280 is sleeved on the first conductive rod 230, and two ends of the torsion spring 280 are respectively fixed on the first conductive rod 230 and the first electrical contact 240.
The bottom center of the first electrical contact 240 is provided with a slot 242, and the end of the second conductive rod 250 movably penetrates through the second electrical contact 260 and is inserted into the slot 242.
In one embodiment, one end of the positioning block 241 is connected to the bottom end of the first electrical contact block 240, and the other end of the positioning block 241 is disposed obliquely clockwise or counterclockwise around the central axis direction of the first electrical contact block 240, and the spiral directions of the spiral groove 272 and the spiral rib 262 are opposite to the oblique directions of the end of the positioning block 241.
Specifically, since the end of the positioning block 241 away from the first electrical contact block 240 is inclined clockwise or anticlockwise around the central axis direction of the first electrical contact block 240, when the positioning block 241 is clamped in the positioning groove 264, the second electrical contact block 260 rotates along one direction to enable the travel hook of the first electrical contact block 240 and the travel hook of the second electrical contact block 260 to be matched, so that the first electrical contact block 240 and the second electrical contact block 260 cannot be easily separated from each other, the fitting is tight, and the positioning block 241 can be smoothly separated from the positioning groove 264 when the second electrical contact block 260 rotates along the other direction, so that the hook connection between the first electrical contact block 240 and the second electrical contact block 260 is avoided.
As shown in fig. 8, in one embodiment, the positioning block 241 is formed by a first blocking portion 2411 and a first straight portion 2412, the top of the first straight portion 2412 is the top end of the positioning block 241, the first blocking portion 2411 is located on one side of the first straight portion 2412 in the clockwise or counterclockwise direction, and the outer surfaces of the first blocking portion 2411 and the first straight portion 2412 form an inclined arc. The positioning groove 264 is formed by a second blocking portion 2641 and a second straight inserting portion 2642, the top of the second straight inserting portion 2642 is an opening of the positioning groove 264, the second blocking portion 2641 is located at one side of the second straight inserting portion 2642 along the clockwise or anticlockwise direction, and the outer surfaces of the second blocking portion 2641 and the second straight inserting portion 2642 form an inclined arc convex.
Specifically, one side of the first straight inserting portion 2412 is a vertical plane, the other side is an inclined plane or curved surface, the first blocking portion 2411 is disposed on the vertical plane side of the first straight inserting portion 2412, and the first blocking portion 2411 and the second blocking portion are connected to form an inclined arc-shaped protruding structure, so that after the end faces of the first electric contact block 240 and the second electric contact block 260 are attached, the second electric contact block 260 can be attached to the first electric contact block 240 more tightly in the process of rotating under the action of the spiral rib 262 and the spiral groove 272.
In one embodiment, the lowest point of the positioning block 241 is located within the opening of the positioning slot 264.
Specifically, when the second electrical contact block 260 approaches the first electrical contact block 240, the lowest point of the positioning block 241 is located directly above the opening range of the positioning groove 264, so that the positioning block 241 is interfered to slide counterclockwise, so that the end of the positioning block 241 is clamped into the positioning groove 264.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (1)
1. A fully clad three-position vacuum circuit breaker, comprising:
The three-station vacuum circuit breaker comprises a three-station vacuum circuit breaker body, wherein an upper sealing cover and a lower sealing cover are respectively arranged at the upper end and the lower end of the three-station vacuum circuit breaker body, a cover plate is detachably arranged on the front surface of the three-station vacuum circuit breaker body, and the surface of the cover plate is provided with a concave-convex structure which is attached to the three-station vacuum circuit breaker body;
The tube middle section is a middle section part of the solid-sealed polar pole, the upper end and the lower end of the tube middle section are respectively provided with a first conducting rod and a second conducting rod, a first electric contact block is fixed on the first conducting rod, a second electric contact block is movably arranged on the second conducting rod, the first electric contact block and the second electric contact block are in surface contact, and in normal state, the second electric contact block is towards the first electric contact block, the inner surface of the tube middle section is provided with a plurality of groups of limiting brackets, each group of limiting brackets comprises two limiting brackets which are respectively positioned at the upper end and the lower end of the tube middle section, the plurality of groups of limiting brackets are arranged in an annular array, a shielding cover is fixedly clamped between the plurality of groups of limiting brackets, a plurality of annular heat dissipation pieces are arranged on the outer surface of the tube middle section along the vertical direction at intervals, each annular heat dissipation piece comprises an annular heat dissipation plate and an annular heat dissipation cone plate, the inner ring of the annular heat dissipation cone plate is connected with the annular heat dissipation plate, a plurality of heat dissipation holes are formed in an annular array, the outer surface of the tube middle section is coiled with the first electric contact block, a plurality of the second electric contact blocks are arranged in an annular heat dissipation groove, a plurality of the second electric contact grooves are respectively arranged at the top end of the second electric contact groove, a plurality of the top end of the spring blocks are fixedly arranged in the annular heat dissipation groove is fixedly, a plurality of the top end of the spring blocks are fixedly arranged in the annular contact groove, and the top end of the spring is fixedly arranged in the annular groove, and the top end is fixedly arranged in the spring groove fixedly, respectively groove is fixedly arranged in the top groove, and top end is fixedly inside the top end tank fixedly is fixedly mounted in the upper end tank. The utility model provides a mounting cavity inner wall is annular array and is provided with a plurality of spiral muscle, the fixed block outer wall is annular array and has seted up a plurality of helicla flute, the activity joint of spiral muscle is in the helicla flute, slot has been seted up to the bottom center department of first electric contact piece, second electric contact piece is run through to the activity of second electric contact piece tip is in and peg graft in the slot, locating piece one end is connected the bottom of first electric contact piece, the locating piece other end winds first electric contact piece axis direction is along clockwise or anticlockwise slope setting, the helicla flute with the spiral direction of spiral muscle with the inclination of locating piece tip is opposite, the locating piece comprises first blocking portion and first straight inserting portion, the top of first straight inserting portion is the top of locating piece, first blocking portion is located first straight inserting portion is along clockwise or anticlockwise one side, first blocking portion with first straight inserting portion surface constitutes an arc protruding of slope, the locating slot comprises second blocking portion and second straight inserting portion around the axis direction, second straight inserting portion is located the second straight inserting portion is the top of second straight inserting portion is located clockwise or anticlockwise protruding portion, the locating piece is located the second straight inserting portion top of the locating piece is located the top of the locating piece is located anticlockwise protruding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410996431.1A CN118538569B (en) | 2024-07-24 | 2024-07-24 | A fully enclosed three-position vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410996431.1A CN118538569B (en) | 2024-07-24 | 2024-07-24 | A fully enclosed three-position vacuum circuit breaker |
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| CN118538569A CN118538569A (en) | 2024-08-23 |
| CN118538569B true CN118538569B (en) | 2024-12-03 |
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| CN202410996431.1A Active CN118538569B (en) | 2024-07-24 | 2024-07-24 | A fully enclosed three-position vacuum circuit breaker |
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| DE102006042101B4 (en) * | 2006-09-07 | 2008-09-25 | Switchcraft Europe Gmbh | Vacuum switch for medium and high voltages |
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| DE102013221910A1 (en) * | 2013-10-29 | 2015-04-30 | Siemens Aktiengesellschaft | Electric switch |
| CN106602452A (en) * | 2016-12-01 | 2017-04-26 | 张力 | Isolation circuit breaker insulated by adopting environmental gas |
| CN213070997U (en) * | 2020-08-05 | 2021-04-27 | 默飓电气有限公司 | Integrated vacuum circuit breaker for gas insulated switchgear |
| CN112117160A (en) * | 2020-08-05 | 2020-12-22 | 默飓电气有限公司 | Integrated vacuum circuit breaker for gas insulated switchgear |
| CN215578348U (en) * | 2021-09-14 | 2022-01-18 | 浙江北业电气有限公司 | Indoor high-voltage three-station vacuum circuit breaker |
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| CN117831995A (en) * | 2023-12-25 | 2024-04-05 | 河南平高通用电气有限公司 | Static end structure of vacuum circuit breaker and vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204858383U (en) * | 2015-06-26 | 2015-12-09 | 协成科技股份有限公司 | Circuit breaker is kept apart to complete three stations of cladding formula |
| CN215644288U (en) * | 2021-09-14 | 2022-01-25 | 浙江北业电气有限公司 | Permanent magnet type indoor high-voltage vacuum circuit breaker |
| CN216818202U (en) * | 2021-12-23 | 2022-06-24 | 锦州华光开关管有限公司 | Vacuum switch tube for large-spacing alternating-current high-voltage quick grounding switch |
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| CN118538569A (en) | 2024-08-23 |
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