CN108878212B - Tank-type breaker with ultrahigh voltage and double fracture - Google Patents
Tank-type breaker with ultrahigh voltage and double fracture Download PDFInfo
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- CN108878212B CN108878212B CN201810997790.3A CN201810997790A CN108878212B CN 108878212 B CN108878212 B CN 108878212B CN 201810997790 A CN201810997790 A CN 201810997790A CN 108878212 B CN108878212 B CN 108878212B
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- 239000011425 bamboo Substances 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000004880 explosion Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 44
- 238000009413 insulation Methods 0.000 claims description 25
- 230000008093 supporting effect Effects 0.000 claims description 11
- 206010017076 Fracture Diseases 0.000 description 21
- 239000007789 gas Substances 0.000 description 21
- 208000010392 Bone Fractures Diseases 0.000 description 19
- 230000033001 locomotion Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
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- 238000007789 sealing Methods 0.000 description 7
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- 229910018503 SF6 Inorganic materials 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 5
- 229960000909 sulfur hexafluoride Drugs 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
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- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 2
- 208000006670 Multiple fractures Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
Abstract
The invention provides an ultrahigh-voltage double-fracture tank-type circuit breaker, and belongs to the technical field of high-voltage circuit breakers. The technical problem that the tightness of the tank body of the existing high-voltage circuit breaker is difficult to ensure is solved. This two fracture tank circuit breakers of extra-high pressure, including the jar section of thick bamboo that is used for filling insulating gas, the top seal of this jar section of thick bamboo has linked firmly insulating sleeve, insulating sleeve's inner chamber with jar inner chamber of section of thick bamboo is linked together, is equipped with the conducting rod in this insulating sleeve, its characterized in that, jar section of thick bamboo have two and be straight tube-shape, through horizontal section of thick bamboo intercommunication between two jar section of thick bamboo, all be equipped with explosion chamber and be used for controlling this explosion chamber disconnected pull rod mechanism in every jar section of thick bamboo, pull rod mechanism is located under the explosion chamber, the conducting rod stretch out insulating sleeve along vertical direction and be connected with the upper end of explosion chamber, be connected and the guide arm is located through the guide arm between the lower extreme of two explosion chambers in the horizontal section of thick bamboo. The ultrahigh-voltage double-fracture tank-type circuit breaker greatly reduces the probability of leakage of insulating gas and is safer.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and relates to an ultrahigh-voltage double-fracture tank-type circuit breaker.
Background
In the ultra-high voltage circuit breaker, a multi-port mode is often adopted, a plurality of fractures can enable the voltage applied to each fracture to be reduced, so that the arc gap recovery voltage of each segment is reduced, in addition, the arc is divided into a plurality of small arc segments to be connected in series by the plurality of fractures, the multiple fractures are longer than the arc drawing of a single fracture under the equal contact stroke, so that the arc gap resistance is increased, the multiple fractures are equivalent to the increase of the total breaking speed, the medium recovery speed is increased, the remarkable applicability is achieved, and the double-fracture circuit breaker is one common mode.
Chinese patent publication No. CN103441031a discloses a double-break tank type vacuum circuit breaker, which is a vacuum chamber formed by a steel tank, a left support insulator and a right support insulator, a Y-type movable conductor is vertically installed under the left and right 2 static conductors in the vacuum chamber, a double-break is formed by the left and right 2 static conductors and the Y-type movable conductor, a left sleeve conductor is inserted into a connecting conductor in the elbow type left tank, and a right sleeve conductor is inserted into a connecting conductor in the elbow type right tank. Above-mentioned structure is through the sealed effect with the bellows welding realization jar section of thick bamboo at its insulating pull rod, but there is pressure differential in bellows both sides and exerts pressure all the time to the butt joint department, and the material of insulating pull rod is mostly nonmetal and metallic material's bellows is difficult to guarantee stable welding quality, along with insulating pull rod axial motion leads to welding failure easily, and when applying to the super high pressure and carry, support insulator to jar section of thick bamboo creepage distance obviously not enough, often still need in filling the sulfur hexafluoride gas of high pressure in the jar section of thick bamboo in addition, the pressure differential that produces is bigger, take place to leak under this state and can also make jar section of thick bamboo in insulating strength decline greatly and cause the puncture, there is very big potential safety hazard.
In order to avoid such a situation, a person skilled in the art often considers how to improve the welding strength of the corrugated pipe, for example, by arranging a part of metal coating on the outer circumferential surface of the insulating pull rod, the welding adhesion effect with the corrugated pipe is improved, or arranging a plurality of sealing structures on the outer circumferential surface of the insulating pull rod to be matched with the inner wall of the tank, but the sealing failure of the insulating pull rod in the use process still has a high probability in the mode, and serious loss can be caused once leakage occurs in the ultrahigh pressure conveying process.
Disclosure of Invention
The invention provides an ultra-high voltage double-fracture tank circuit breaker aiming at the problems existing in the prior art, and aims to solve the technical problems that: how to improve the safety of the high-voltage circuit breaker.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a two fracture tank circuit breakers of superhigh pressure, is including being used for filling the jar section of thick bamboo of insulating gas, the top seal of this jar section of thick bamboo has linked firmly insulating sleeve, insulating sleeve's inner chamber with jar section of thick bamboo's inner chamber is linked together, is equipped with the conducting rod in this insulating sleeve, its characterized in that, jar section of thick bamboo have two and be straight tube-shape, through horizontal section of thick bamboo intercommunication between two jar section of thick bamboo, all be equipped with explosion chamber and be used for controlling this explosion chamber disconnected pull rod mechanism in every jar section of thick bamboo, pull rod mechanism is located under the explosion chamber, the conducting rod stretch out insulating sleeve along vertical direction and be connected with the upper end of explosion chamber, be connected and the guide arm is located through the guide arm between the lower extreme of two explosion chambers in the horizontal section of thick bamboo.
The pot is used for filling high-pressure sulfur hexafluoride gas or other insulating gases, the top of the pot is fixedly connected with the insulating sleeve to prevent the outer creepage phenomenon, and the conducting rod is arranged in the insulating sleeve and used for conveying current. Through dividing to establish two jar barrels that are straight tube-shape and communicate through the cross section of thick bamboo, make the inside structure of two jar barrels like this all obtain insulating gas's parcel and guarantee that the pressure environment of both sides is unanimous, avoid insulating gas pressure difference to arouse explosion chamber and break inconsistent and cause the part damage, all set up explosion chamber and be used for controlling explosion chamber open pull rod mechanism in every jar barrel in addition, make the conducting rod stretch out insulating sleeve and link to each other with the upper end of explosion chamber, the lower extreme of two explosion chambers is connected through the guide arm that crosses the cross section of thick bamboo, all have independent pull rod mechanism under every explosion chamber, guarantee that the in-process of opening of pull rod mechanism force direction all produces moment along the axial, avoid part deformation fatigue to cause the accident, in addition whole pull rod mechanism all wraps up in the jar barrel that is full of insulating gas, guarantee that the motion of pull rod mechanism all can not exert an influence to the seal in a jar barrel, and the structure of jar external surface is static in the use, can guarantee the optimal seal effect, thereby the inside insulating gas emergence probability of circuit breaker is greatly reduced, the security of this circuit breaker is improved.
In the above-mentioned two fracture tank circuit breakers of superhigh pressure, the pull rod mechanism includes insulating pull rod and operating mechanism, the upper end of insulating pull rod with the lower extreme of explosion chamber is connected, the lower extreme of this insulating pull rod with operating mechanism transmission is connected, the lateral wall of jar is fixed with aviation plug, aviation plug's inner with operating mechanism electricity is connected. The pull rod mechanism comprises an insulating pull rod and an operating mechanism, the upper end of the insulating pull rod is connected with the lower end of the arc extinguishing chamber so as to drive the arc extinguishing chamber to be opened and closed through axial movement, the operating mechanism is connected with the lower end of the insulating pull rod to realize the axial movement of the insulating pull rod, the existing operating mechanism comprises a spring type, an eddy electromagnetic repulsive force type and the like, through inserting the aviation plug at the lateral wall of a jar section of thick bamboo, make the inner and the operating mechanism electricity of aviation plug be connected, aviation plug has fine gas tightness, and the external world can control the opening of operating mechanism realization explosion chamber through aviation plug circular telegram like this, and whole process can not produce the sealed that influences a jar section of thick bamboo, further guarantees the security of this circuit breaker.
In the above-mentioned two fracture tank circuit breakers of superhigh pressure, the roof that seals this insulating sleeve upper end has been linked firmly to insulating sleeve's top, the upper end of conducting rod with the roof is connected, the bottom of a jar section of thick bamboo has linked firmly the bottom plate that seals this jar section of thick bamboo lower extreme. Through set up the roof at insulating sleeve top, set up the bottom plate in the lower extreme of a jar section of thick bamboo, guarantee like this that insulating sleeve and jar cavity that section of thick bamboo formed have sufficient leakproofness, guarantee the security of this circuit breaker.
In the above-mentioned two fracture tank circuit breakers of superhigh pressure, every the below of bottom plate is equipped with the support frame, the top surface of support frame with the bottom plate links firmly, two the support frame is followed the extending direction sliding connection of horizontal section of thick bamboo. The tank barrels of two vertical settings are communicated through a transverse barrel, in the actual installation process, after the two tank barrels are respectively installed at the appointed position of the support frame, the horizontal distance between the two tank barrels can be greatly increased due to the characteristic requirement of ultrahigh pressure, the installation distance between the two tank barrels is often inconsistent with the actual size of the transverse barrel, the forced installation can lead to the internal stress interaction of the circuit breaker, hidden danger that the connection part breaks away from exists, and the support frame is arranged along the extending direction of the transverse barrel in a sliding manner, so that the internal stress can be eliminated through the sliding of the support frame, the vertical stable supporting effect can be guaranteed, and the safety of the circuit breaker can be further ensured.
In the above-mentioned two fracture tank circuit breaker of superhigh pressure, a plurality of waist type holes have been seted up on the support frame, the length direction in waist type hole with the extending direction of horizontal section of thick bamboo is unanimous, the outside of support frame is equipped with the connecting plate, two support frames are connected respectively through the bolt to the connecting plate, the bolt is inserted and is located in the waist type hole and can slide relative waist type hole's inside wall. Through offer a plurality of extending direction and horizontal barrel axial parallel's waist type hole on the support frame, use the bolt to pass connecting plate and waist type hole cooperation realization to the limited scope sliding connection of two support frames, can realize the installation of horizontal barrel through adjusting bolt mounted position, the simple operation.
In the ultra-high voltage double-fracture tank circuit breaker, the length dimension of the insulating sleeve is larger than the length dimension of the tank. To the insulating sleeve outside of superhigh pressure transport must have sufficient creepage distance, set up insulating sleeve's length dimension is greater than the length dimension of a jar section of thick bamboo, guarantee insulating sleeve outside enough high insulativity like this, reduce the creepage phenomenon that external adhesion pollution caused, improve the security of this circuit breaker.
In the tank-type breaker with the ultrahigh pressure and double fracture, the periphery of the insulation pull rod is provided with the transmission arm, the sliding block and the sliding cylinder which is horizontally arranged along the axial direction towards the insulation pull rod, the sliding block is in sliding fit with the sliding cylinder, a pre-tightening spring is arranged between the sliding block and the bottom of the sliding cylinder in a propping mode, one end of the transmission arm is hinged to the insulation pull rod, the other end of the transmission arm is hinged to the sliding block, when the arc extinguishing chamber is closed, one end of the transmission arm, which is hinged to the insulation pull rod, is inclined upwards, and when the arc extinguishing chamber is disconnected, one end, which is hinged to the insulation pull rod, of the transmission arm is inclined downwards. The two ends of the transmission arm are respectively hinged with the insulation pull rod and the sliding block, so that the sliding block is in sliding fit in the sliding cylinder which is horizontally arranged, the sliding cylinder faces the insulation pull rod along the axial direction, in addition, a compression pre-tightening spring is arranged in the sliding cylinder and is abutted against the sliding block, so that the hinge point position of the sliding block and the transmission arm only moves in the horizontal direction, the hinge point position of the insulation pull rod and the transmission arm only moves in the vertical direction, before the arc extinguishing chamber is closed, the end of the transmission arm hinged with the insulation pull rod is inclined downwards, the insulation pull rod drives the end of the transmission arm to move when the arc extinguishing chamber starts to be closed, the inclination of the transmission arm gradually tends to be horizontal, at the moment, the sliding block is pushed to slide in the sliding cylinder and further compresses the spring, when the continuous movement enables the end of the transmission arm hinged with the insulation pull rod to start to be inclined upwards, the insulation pull rod is subjected to the upward thrust of the inclination of the transmission arm at the moment, so that the closing speed is improved, and when the arc extinguishing chamber is closed, the thrust of the spring still continues to act, and the closing effect is ensured; similarly, in the breaking process of the arc extinguishing chamber, the spring firstly stores energy, and releases potential energy to accelerate the downward movement of the insulating pull rod after the inclination angle of the transmission arm passes through the horizontal critical, so that the breaking speed is improved.
In the ultra-high voltage double-fracture tank-type circuit breaker, the transmission arm, the spring, the sliding cylinder and the sliding block are arranged in a plurality and uniformly distributed along the periphery of the insulation pull rod. Through evenly arranging a plurality of transmission arms, spring, slide cylinder and slider at the periphery of insulating pull rod along circumference, the effort that insulating pull rod received each transmission arm can offset each other and increase axial thrust like this to avoid insulating pull rod to receive the unbalance loading and take place deformation fracture, guarantee the security of circuit breaker and improve explosion chamber and break closed speed.
Compared with the prior art, the invention has the following advantages:
1. this two fracture tank circuit breakers of extra-high pressure is through dividing to establish two jar barrels that are straight tube-shape and through horizontal section of thick bamboo intercommunication, make the inside structure of two jar barrels like this all obtain insulating gas's parcel and guarantee that the pressure environment of both sides is unanimous, all set up independent pull rod mechanism under every explosion chamber in addition, guarantee that the in-process application of force direction of pull rod mechanism all along the axial and do not produce moment, set up whole pull rod mechanism in addition and all wrap up in the jar that is full of insulating gas, guarantee that the motion of pull rod mechanism all can not influence to sealing in jar inside, and the structure of jar external surface is static in the use, can guarantee optimal sealed effect, thereby reduce the probability that the inside insulating gas of circuit breaker takes place to leak by a wide margin, the security of this circuit breaker is improved.
2. This two fracture tank circuit breakers of extra-high pressure is through inserting the aviation plug at the lateral wall of a jar section of thick bamboo, makes the inner and the operating mechanism electricity of aviation plug be connected, and aviation plug has fine gas tightness, and the external world can control the switching-on of operating mechanism realization explosion chamber through aviation plug circular telegram like this, and whole process can not produce the sealed that influences a jar section of thick bamboo, further guarantees the security of this circuit breaker.
Drawings
Fig. 1 is a schematic perspective view of the ultra-high voltage double-break tank circuit breaker.
Fig. 2 is a schematic cross-sectional view of the ultra-high voltage double-break tank circuit breaker.
Fig. 3 is a schematic view of a partial cross-sectional structure of a canister.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is a schematic perspective view of a single support frame.
In the figure, 1, a tank; 11. aviation plug; 12. a bottom plate; 13. a pressure gauge; 14. an inflation valve; 15. a transformer;
2. an insulating sleeve; 21. a top plate;
3. a conductive rod; 4. a transverse cylinder; 5. an arc extinguishing chamber;
6. a pull rod mechanism; 61. an insulating pull rod; 62. an operating mechanism; 63. a transmission arm; 64. a slide block; 65. a slide cylinder; 66. a spring;
7. a guide rod;
8. a support frame; 81. a waist-shaped hole; 82. a connecting plate; 83. and (5) a bolt.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-3, the ultra-high voltage double-fracture tank-type circuit breaker is a circuit breaker applicable to 363KV ultra-high voltage, and comprises a tank 1 for filling sulfur hexafluoride gas, an insulating sleeve 2 is fixedly connected to the top of the tank 1 in a sealing manner, the inner cavity of the insulating sleeve 2 is communicated with the inner cavity of the tank 1, two conductive rods 3 are arranged in the insulating sleeve 2, the tank 1 is in a straight cylindrical shape, the two tank 1 are communicated through a transverse cylinder 4, an arc extinguishing chamber 5 and a pull rod mechanism 6 for controlling the arc extinguishing chamber 5 to be opened and closed are arranged in each tank 1, the pull rod mechanism 6 is located under the arc extinguishing chamber 5, the conductive rods 3 extend out of the insulating sleeve 2 in the vertical direction and are connected with the upper ends of the arc extinguishing chamber 5, the lower ends of the two arc extinguishing chambers 5 are connected through guide rods 7, and the guide rods 7 are located in the transverse cylinder 4. The pot 1 is used for filling high-pressure sulfur hexafluoride gas, the top of the pot 1 is fixedly connected with the insulating sleeve 2 to ensure enough creepage distance, and the conducting rod 3 is arranged in the insulating sleeve 2 and used for conveying current. Through dividing to establish two jar barrels 1 that are straight tube-shape and communicate through horizontal section of thick bamboo 4, make the inside structure of two jar barrels 1 all obtain insulating gas's parcel and guarantee that the pressure environment of both sides is unanimous like this, avoid insulating gas pressure difference to arouse explosion chamber 5 to break inconsistent and cause the part damage, all set up explosion chamber 5 and be used for controlling explosion chamber 5 open-ended pull rod mechanism 6 in every jar barrel 1 in addition, make conducting rod 3 stretch out insulating sleeve 2 and link to each other with the upper end of explosion chamber 5, the lower extreme of two explosion chambers 5 is connected through the guide arm 7 that crosses horizontal section of thick bamboo 4, all have independent pull rod mechanism 6 under every explosion chamber 5, guarantee that the force application direction all is along the axial and not produce moment in the open-ended process of pull rod mechanism 6, avoid part deformation tired and cause the accident, moreover whole pull rod mechanism 6 all wraps up in jar barrel 1 that is full of insulating gas, guarantee that the motion of pull rod mechanism 6 all is carried out inside can not produce the influence to the seal in jar barrel 1, and the structure on the jar surface is static in the use, and all through structure seal, and all guarantee that the seal can take place the inside sealed circuit breaker of gas leakage probability by a wide margin, thereby the best circuit breaker, the safety of the inside of the sealed circuit breaker can take place. Further, the pull rod mechanism 6 comprises an insulating pull rod 61 and an operating mechanism 62, the upper end of the insulating pull rod 61 is connected with the lower end of the arc extinguishing chamber 5, the lower end of the insulating pull rod 61 is in transmission connection with the operating mechanism 62, the outer side wall of the can 1 is fixed with an aviation plug 11, and the inner end of the aviation plug 11 is electrically connected with the operating mechanism 62. The pull rod mechanism 6 comprises an insulating pull rod 61 and an operating mechanism 62, the upper end of the insulating pull rod 61 is connected with the lower end of the arc extinguish chamber 5 so as to drive the arc extinguish chamber 5 to break through axial movement, the operating mechanism 62 is connected with the lower end of the insulating pull rod 61 to realize axial movement of the arc extinguish chamber, the operating mechanism 62 is an eddy current electromagnetic repulsion mechanism, the inner end of the aviation plug 11 is electrically connected with the operating mechanism 62 through inserting the aviation plug 11 into the outer side wall of the tank 1, the aviation plug 11 has good air tightness, and thus the outside can control the operating mechanism 62 to realize the breaking of the arc extinguish chamber 5 through electrifying the aviation plug 11, the whole process can not produce sealing affecting the tank 1, and the safety of the circuit breaker is further ensured. The outer side wall of the tank 1 is provided with a pressure gauge 13 for monitoring the gas pressure inside the tank 1 and an inflation valve 14 for inflating sulfur hexafluoride gas into the tank, the pressure gauge 13 is convenient for monitoring the pressure data inside the tank 1 in real time, operators can find dangerous cases conveniently, an annular transformer 15 is mounted on the inner side wall of the upper end of the tank 1, the conducting rod 3 axially penetrates through the axle center of the transformer 15, and the length dimension of the insulating sleeve 2 is larger than that of the tank 1. To the extra-high voltage transport insulating sleeve 2 outside must have sufficient creepage distance, set up insulating sleeve 2's length dimension and be greater than the length dimension of a jar section of thick bamboo 1, guarantee insulating sleeve 2 outside enough high insulativity like this, reduce the creepage phenomenon that external adhesion pollution caused, improve the security of this circuit breaker.
As shown in fig. 1, 2 and 5, the top of the insulating sleeve 2 is fixedly connected with a top plate 21 sealing the upper end of the insulating sleeve 2, the upper end of the conducting rod 3 is connected with the top plate 21, and the bottom of the tank 1 is fixedly connected with a bottom plate 12 sealing the lower end of the tank 1. Through setting up roof 21 at insulating sleeve 2 top, set up bottom plate 12 at the lower extreme of a jar section of thick bamboo 1, guarantee like this that insulating sleeve 2 and jar cavity that section of thick bamboo 1 formed have sufficient leakproofness, guarantee the security of this circuit breaker. A supporting frame 8 is arranged below each bottom plate 12, the top surface of the supporting frame 8 is fixedly connected with the bottom plate 12, and the two supporting frames 8 are connected in a sliding manner along the extending direction of the transverse cylinder 4. The tank cylinders 1 arranged vertically are communicated through the transverse cylinder 4, in the actual installation process, after the two tank cylinders 1 are respectively installed at the designated positions of the supporting frames 8, the horizontal distance between the two tank cylinders 1 can be larger due to the characteristic requirement of ultrahigh pressure, the problem of large size tolerance can be solved, the installation distance between the two tank cylinders 1 is often inconsistent with the actual size of the transverse cylinder 4, the forced installation can cause the internal stress interaction of the circuit breaker, the hidden danger of detachment of the connecting part exists, and the supporting frames 8 are slidably connected along the extending direction of the transverse cylinder 4, so that the internal stress can be eliminated and the vertical stable supporting effect can be guaranteed by the sliding of the supporting frames 8, and the safety of the circuit breaker is further ensured. Further, four waist-shaped holes 81 are formed in each support frame 8, the length direction of each waist-shaped hole 81 is consistent with the extending direction of the transverse cylinder 4, connecting plates 82 are arranged on the outer sides of the support frames 8, the connecting plates 82 are respectively connected with the two support frames 8 through bolts 83, and the bolts 83 are inserted into the waist-shaped holes 81 and can slide relative to the inner side walls of the waist-shaped holes 81. Through offer four extending direction and horizontal section of thick bamboo 4 axial parallel's waist type hole 81 on support frame 8, use bolt 83 to pass connecting plate 82 and waist type hole 81 cooperation realization to the limited scope sliding connection of two support frames 8, can realize the installation of horizontal section of thick bamboo 4 through adjusting bolt 83 mounted position, the simple operation.
As shown in fig. 2 to 4, the periphery of the insulating pull rod 61 is provided with a transmission arm 63, a sliding block 64 and a sliding cylinder 65 which is horizontally arranged towards the insulating pull rod 61 along the axial direction, the sliding block 64 is in sliding fit with the sliding cylinder 65, a pre-tightening spring 66 is arranged between the sliding block 64 and the bottom of the sliding cylinder 65 in an abutting manner, one end of the transmission arm 63 is hinged with the insulating pull rod 61, the other end of the transmission arm 63 is hinged with the sliding block 64, when the arc extinguishing chamber 5 is closed, the hinged end of the transmission arm 63 and the insulating pull rod 61 is inclined upwards, and when the arc extinguishing chamber 5 is disconnected, the hinged end of the transmission arm 63 and the insulating pull rod 61 is inclined downwards. By arranging the two ends of the transmission arm 63 to be hinged with the insulation pull rod 61 and the sliding block 64 respectively, so that the sliding block 64 is in sliding fit in the sliding cylinder 65 which is horizontally arranged, the sliding cylinder 65 axially faces the insulation pull rod 61, a compression pre-tightening spring 66 is arranged in the sliding cylinder 65 to be abutted against the sliding block 64, so that the position of a hinge point of the sliding block 64 and the transmission arm 63 only moves in the horizontal direction, the joint point of the insulation pull rod 61 and the transmission arm 63 only moves in the vertical direction, the end of the transmission arm 63 hinged with the insulation pull rod 61 is inclined downwards before the arc extinguishing chamber 5 is closed, the insulation pull rod 61 drives one end of the transmission arm 63 to move at the beginning of closing, the inclination of the transmission arm 63 gradually tends to be horizontal, at the moment, the sliding rod 64 is pushed to slide towards the sliding cylinder 65 and further compresses the spring 66, when the continuous movement enables the end of the transmission arm 63 hinged with the insulation pull rod 61 to start to be inclined upwards, the spring 66 outwards releases potential energy, the insulation pull rod 61 is subjected to the upward thrust of the transmission arm 63 at the moment, so that the closing speed is improved, and the thrust of the spring 66 continues to act continuously after the arc extinguishing chamber 5 is closed, so that the closing effect is ensured; similarly, in the process of disconnecting the arc extinguishing chamber 5, the spring 66 stores energy firstly, passes through the horizontal critical angle at the inclination angle of the transmission arm 63, and then releases potential energy to accelerate the downward movement of the insulating pull rod 61, so that the disconnection speed is improved. The transmission arm 63, the spring 66, the slide tube 65, and the slider 64 are four and are uniformly arranged along the outer circumference of the insulating tie rod 61. Through evenly arranging a plurality of transmission arms 63, springs 66, sliding drums 65 and sliding blocks 64 along circumference at the periphery of insulating pull rod 61, the effort that insulating pull rod 61 received each transmission arm 63 can offset each other and increase axial thrust in the horizontal direction like this to avoid insulating pull rod 61 to receive the unbalance loading and take place deformation fracture, guarantee the security of circuit breaker and improve explosion chamber 5 and break closed speed.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides an ultra-high voltage double-fracture tank circuit breaker, includes a tank section of thick bamboo (1) that is used for filling insulating gas, and insulating sleeve (2) has been sealed to be linked firmly in the top of this tank section of thick bamboo (1), the inner chamber of insulating sleeve (2) with the inner chamber of tank section of thick bamboo (1) is linked together, is equipped with conducting rod (3) in this insulating sleeve (2), characterized in that, tank section of thick bamboo (1) have two and straight tube-shape, communicate through horizontal section of thick bamboo (4) between two tank section of thick bamboo (1), all be equipped with explosion chamber (5) and be used for controlling this explosion chamber (5) disconnected pull rod mechanism (6) in every tank section of thick bamboo (1), pull rod mechanism (6) are located explosion chamber (5) under, conducting rod (3) stretch out insulating sleeve (2) along vertical direction and be connected with the upper end of explosion chamber (5), connect through guide arm (7) between the lower extreme of two explosion chamber (5) and be located horizontal section of thick bamboo (4); the top of insulating sleeve (2) has linked firmly roof (21) that seals this insulating sleeve (2) upper end, the upper end of conducting rod (3) with roof (21) are connected, bottom plate (12) that seals this jar section of thick bamboo (1) lower extreme have linked firmly to the bottom of jar section of thick bamboo (1), every the below of bottom plate (12) is equipped with support frame (8), the top surface of support frame (8) with bottom plate (12) link firmly, two support frame (8) are followed extend direction sliding connection of horizontal section of thick bamboo (4).
2. The ultra-high voltage double-fracture tank circuit breaker according to claim 1, characterized in that the pull rod mechanism (6) comprises an insulating pull rod (61) and an operating mechanism (62), the upper end of the insulating pull rod (61) is connected with the lower end of the arc extinguishing chamber (5), the lower end of the insulating pull rod (61) is in transmission connection with the operating mechanism (62), an aviation plug (11) is fixed on the outer side wall of the tank (1), and the inner end of the aviation plug (11) is electrically connected with the operating mechanism (62).
3. The ultra-high voltage double-fracture tank circuit breaker according to claim 1, wherein a plurality of waist-shaped holes (81) are formed in the supporting frame (8), the length direction of the waist-shaped holes (81) is consistent with the extending direction of the transverse cylinder (4), connecting plates (82) are arranged on the outer sides of the supporting frame (8), the connecting plates (82) are respectively connected with the two supporting frames (8) through bolts (83), and the bolts (83) are inserted into the waist-shaped holes (81) and can slide relative to the inner side walls of the waist-shaped holes (81).
4. The ultra-high voltage double break tank circuit breaker according to claim 1 or 2, characterized in that the length dimension of the insulating sleeve (2) is larger than the length dimension of the tank (1).
5. The ultra-high voltage double-fracture tank circuit breaker according to claim 2, characterized in that the periphery of the insulation pull rod (61) is provided with a transmission arm (63), a sliding block (64) and a sliding cylinder (65) horizontally arranged towards the insulation pull rod (61) along the axial direction, the sliding block (64) is in sliding fit in the sliding cylinder (65), a pre-tightening spring (66) is abutted against the bottom of the sliding block (64) and the sliding cylinder (65), one end of the transmission arm (63) is hinged with the insulation pull rod (61), the other end of the transmission arm (63) is hinged with the sliding block (64), when the arc extinguishing chamber (5) is closed, the hinged end of the transmission arm (63) and the insulation pull rod (61) is inclined upwards, and when the arc extinguishing chamber (5) is disconnected, the hinged end of the transmission arm (63) and the insulation pull rod (61) is inclined downwards.
6. The ultra-high voltage double-break tank circuit breaker according to claim 5, characterized in that the transmission arm (63), the spring (66), the slide cylinder (65) and the slide block (64) are several and uniformly arranged along the outer circumference of the insulating pull rod (61).
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| CN201810997790.3A CN108878212B (en) | 2018-08-29 | 2018-08-29 | Tank-type breaker with ultrahigh voltage and double fracture |
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| CN201810997790.3A CN108878212B (en) | 2018-08-29 | 2018-08-29 | Tank-type breaker with ultrahigh voltage and double fracture |
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| CN108878212A CN108878212A (en) | 2018-11-23 |
| CN108878212B true CN108878212B (en) | 2024-03-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112435889A (en) * | 2020-12-01 | 2021-03-02 | 郑州大学 | High-voltage integrated static and dynamic self-voltage-sharing vacuum arc extinguish chamber |
| CN113745042A (en) * | 2021-09-07 | 2021-12-03 | 南京南瑞继保电气有限公司 | Multi-fracture tank type high-voltage quick circuit breaker |
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| CN108878212A (en) | 2018-11-23 |
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