CN116864341B - Isolation conductive loop structure of outdoor secondary fusion high-voltage circuit breaker - Google Patents
Isolation conductive loop structure of outdoor secondary fusion high-voltage circuit breaker Download PDFInfo
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- CN116864341B CN116864341B CN202310946936.2A CN202310946936A CN116864341B CN 116864341 B CN116864341 B CN 116864341B CN 202310946936 A CN202310946936 A CN 202310946936A CN 116864341 B CN116864341 B CN 116864341B
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- 238000002955 isolation Methods 0.000 title claims abstract description 130
- 230000004927 fusion Effects 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 125000006850 spacer group Chemical group 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003466 welding 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
- H01H33/60—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
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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
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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
- H01H33/666—Operating arrangements
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Abstract
The invention discloses an isolation conductive loop structure of an outdoor secondary fusion high-voltage circuit breaker, which comprises a circuit breaker main body, wherein one side of the circuit breaker main body is provided with a mounting frame and a current-voltage integrated sensor, and the mounting frame is provided with an isolation strut; the conducting rod passes through the current-voltage integrated sensor and is connected with a current output end in the breaker main body, two isolation blades are symmetrically arranged at the exposed end of the conducting rod and are connected with the isolation blades through fasteners, an isolation contact is arranged on an isolation support column, a limiting mechanism for adjusting the opening and closing angle of the isolation blades is arranged at the middle section part of the isolation blades, a clamping device is arranged at one end, far away from the conducting rod, of the isolation blades, an extension part is arranged at one end, far away from the conducting rod, of the isolation blades, and the extension part is fixed through a clamping device I arranged on the isolation contact; in the closing process, the clamping device I is matched with the clamping device, so that gaps and dislocation of the isolation knife plate and the isolation contact are avoided under the action of electric force, and the close contact between the isolation knife plate and the isolation contact is improved.
Description
Technical Field
The invention relates to the technical field of high-voltage switch equipment for power production, in particular to an isolation conductive loop structure of an outdoor secondary fusion high-voltage circuit breaker.
Background
Currently, a combination of a high-voltage circuit breaker and a disconnecting switch in a power system is increasingly used. Because the contact of the high-voltage circuit breaker is inside, the on-off and on-off states can only be judged through the on-off indication outside the box body, no obvious breakpoint is visible for eyes, misoperation is easy to occur during circuit maintenance, and harm is brought to personal safety. The isolating switch can provide a visible fracture for the pole-mounted circuit breaker, so that the safety of maintenance of the pole-mounted switch is improved.
When the high-voltage line is short-circuited, the high-voltage element can bear the maximum electric power generated during the short circuit, namely, the requirement of dynamic stability is met, but the pressing structure between the isolating blade and the contact of the conventional outdoor circuit breaker can not meet the requirement at present, and the isolating blade and the contact are easy to generate gaps and dislocation under the action of the electric power, so that an electric arc is generated between the isolating blade and the contact, and finally the isolating blade and the contact are ablated.
In addition, the traditional isolating switch often causes the isolating knife board to deviate from the contact in the closing process due to factors such as weather, external force and the like in actual operation, so that the isolating switch cannot close in place, and the phenomena of burnout of the isolating switch and burnout of the main switch occur.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an isolation conductive loop structure of an outdoor secondary fusion high-voltage circuit breaker, which solves the problems that gaps and dislocation are easy to generate between an isolation knife board and a contact under the action of electrodynamic force, and the isolation knife board is often deviated from the contact in the closing process due to factors such as weather, external force and the like in actual operation, so that an isolation switch cannot close a gate in place.
In order to achieve the above object, the present invention adopts the following technical scheme:
an outdoor secondary fuses high voltage circuit breaker and keeps apart conductive loop structure, includes:
the circuit breaker comprises a circuit breaker main body, wherein one side of the circuit breaker main body is provided with a mounting frame and a current-voltage integrated sensor, and the mounting frame is provided with an isolation pillar which is arranged corresponding to the current-voltage integrated sensor;
the conductive loop device comprises a conductive rod, an isolation blade and an isolation contact, wherein the conductive rod passes through a current-voltage integrated sensor and is connected with a current output end in a breaker main body, two isolation blades are symmetrically arranged at the exposed end of the conductive rod and are connected with the isolation blade through fasteners, the isolation contact is arranged on an isolation support column, a limiting mechanism for adjusting the opening and closing angle of the isolation blade is arranged at the middle section part of the isolation blade, a clamping device is arranged at one end of the isolation blade, far away from the conductive rod, an extension part is arranged at one end of the isolation blade, far away from the conductive rod, and the extension part is fixed through a first clamping device arranged on the isolation contact;
When the isolating knife plate rotates to a designated position, one end of the isolating knife plate, which is far away from the conducting rod, is electrically connected with the isolating contact, and the extending part is connected with the first clamping device.
Preferably, one end of the isolating contact, which is perpendicular to the isolating support post, is provided with two guide heads, and an included angle formed between the guide heads and the isolating contact is an acute angle;
The guide head and the isolation contact are of an integrated structure.
Preferably, the clamping device comprises a screw rod II, a fixed-width spacer bush I sleeved on the screw rod II, a spring I and a washer I;
The first spring and the first gasket are arranged close to the head of the second screw, the first gasket is provided with two gaskets, and the first spring is arranged between the two first gaskets.
Preferably, the first clamping device comprises a clamping frame, a guide alignment block, a second spring, a guide sleeve and a guide pillar;
The clamping frame is used for positioning, clamping and guiding alignment blocks, the clamping frame is arranged on the isolation contact, the two guiding alignment blocks are arranged and correspond to the two isolation knife boards, the guiding alignment blocks are symmetrical bodies, the inner sides of the guiding alignment blocks are provided with arc parts, the guide sleeve is movably connected with the guide pillar and is respectively arranged on one side corresponding to the two guiding alignment blocks, the second spring is sleeved on the guide sleeve, one end of the second spring is in contact with the guide sleeve step surface, and the other end of the second spring is in contact with the guide pillar step surface.
Preferably, the fastener comprises a screw, and a spring and a washer sleeved on the screw;
The conducting rod is connected with the isolation cutting board through a screw rod, the spring and the gasket are arranged close to the head of the screw rod, two gaskets are arranged, and the spring is arranged between the two gaskets.
Preferably, the limiting mechanism is provided with at least one group, and comprises a first screw rod for connecting the two isolation knife boards with each other and a width-fixing spacer sleeve sleeved on the first screw rod, and the width-fixing spacer sleeve is positioned between the two isolation knife boards.
Preferably, the installation frame is rotatably provided with an isolation rotating shaft in a penetrating way, the isolation rotating shaft is movably connected with an isolation pull rod through a main crank arm, and the isolation pull rod is movably connected with a fixed-width spacer bush through an adjusting bolt.
Preferably, the isolating rotating shaft is connected with a reset mechanism, at least one group of reset mechanisms is arranged on the isolating rotating shaft, and each reset mechanism comprises an auxiliary crank arm, a supporting spring rod, a reset spring and a fixing frame;
The auxiliary crank arm is connected to the isolation rotating shaft, the fixing frame is connected to the mounting frame, two ends of the spring supporting rod are respectively movably connected with the auxiliary crank arm and the fixing frame through rotating pins, and the reset spring is sleeved on the spring supporting rod.
Preferably, the breaker main body comprises a sealed metal box and three-phase polar posts arranged on the sealed metal box, wherein each phase of polar post is provided with a vacuum arc-extinguishing chamber and an insulating pull rod for controlling the opening or closing of the vacuum arc-extinguishing chamber;
The outdoor high-voltage isolation conductive loop junction comprises three groups.
The invention has the beneficial effects that:
In the closing process, the guide head is arranged on the isolation contact, so that the isolation knife board and the isolation contact are accurate, the isolation knife board is easier to be in close contact with the isolation contact under the action of the clamping device, meanwhile, the extension part of the isolation knife board is under the action of the first clamping device so as to limit the isolation knife board, the isolation knife board and the isolation contact are prevented from generating gaps and dislocation under the action of electric force, and the first clamping device is matched with the clamping device, so that the close contact between the isolation knife board and the isolation contact is further improved.
Through setting up clamping device one, in the in-process of closing a floodgate, contradict two direction alignment pieces through guide pillar guide pin bushing by the reciprocating spring, make the direction alignment piece carry out the centre gripping to isolation cutting board extension, avoid appearing the isolator and close a floodgate and can't put the phenomenon in place.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a conductive loop apparatus according to the present invention;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 2 at C in accordance with the present invention;
FIG. 6 is an exploded view of a clamping device according to the present invention;
FIG. 7 is a schematic view showing the connection structure of the installation frame, the isolated rotating shaft, the reset mechanism and the conductive loop device of the present invention
Fig. 8 is a sectional view showing a connection structure of a breaker main body and a current-voltage integrated sensor according to the present invention;
meaning of reference numerals:
1. The circuit breaker comprises a breaker main body, 2, a mounting frame, 3, a current-voltage integrated sensor, 4, an isolation pillar, 5, a conducting rod, 6, an isolation knife board, 7, an isolation contact, 8, a guide head, 9, a screw, 10, a spring, 11, a gasket, 12, a screw I, 13, a fixed-width spacer, 14, a screw II, 15, a fixed-width spacer I, 16, a spring I, 17, a gasket I, 18, an isolation rotating shaft, 19, a main crank arm, 20, an isolation pull rod, 21, a secondary crank arm, 22, a support spring rod, 23, a return spring, 24, a fixing frame, 25, a pole, 26, an insulation pull rod, 27, an extension part, 28, a guide alignment block, 29, a spring II, 30, a guide sleeve, 31, a guide pillar, 32, a clamping frame, 33, a sealing metal box, 34 and an adjusting bolt.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1-8, the embodiment discloses an isolation conductive loop structure of an outdoor secondary fusion high-voltage circuit breaker, which comprises a circuit breaker main body 1, a conductive loop device, a fastener, a limiting mechanism, a clamping device and a clamping device I.
Specifically, as shown in fig. 1, the breaker body 1 includes a sealed metal case 33 and three-phase poles 25 provided on the sealed metal case 33, each phase pole 25 being provided with a vacuum interrupter and an insulating tie bar 26 for controlling opening or closing of the vacuum interrupter. One side of the breaker main body 1 is provided with a mounting frame 2 and a current-voltage integrated sensor 3, and the current-voltage integrated sensor 3 has a structure of an integrated through-wall conduit. The mounting frame 2 is configured to support various elements, and isolation posts 4 provided in correspondence with the current-voltage integrated sensor 3 are provided on the mounting frame 2.
It should be noted that, the current-voltage integrated sensor 3 adopted by the invention can output zero sequence voltage and phase current and zero sequence current sampling signals at the same time, and can be directly assembled with the breaker main body 1 to form an intelligent vacuum breaker, thus having the characteristics of high accuracy and three-in-one measurement, metering and protection.
1. Voltage part
1. The composite film capacitor adopting the structure similar to the CVT transformer has good long-term stability and long-term operation experience of a power grid.
2. The main capacitance is 600pF, and has the advantages of large working current and strong anti-interference capability.
3. The output internal resistance is small, the cable can be suitable for various cables, the error caused by the cables is overcome, and the cable exchange error is less than 0.1%.
4. The method has the characteristic of small precision change affected by the ambient temperature, the maximum error change amount is reduced by thousands of 0.5% in the full temperature range of-40 ℃ to 70 ℃, and the temperature variation index requirement of the 3P level sensor specified by the dry standard is far higher.
5. The secondary signal is output through the isolation transformer, so that the safety and the anti-interference capability are better.
2. Current portion
1. The phase current and the zero sequence current are wound by adopting independent coils, and the zero sequence current is obtained by a current synthesis method.
2. The zero sequence current output has the error less than 1% when the primary current is 1% -120% of rated current (1A-24A), and the error less than 10% when the overcurrent is 10 times (200A).
3. The low-temperature drift iron core is adopted for manufacturing, and the error variation meets the standard requirement in the temperature range of-40 ℃ to 70 ℃, especially-40 ℃.
4. In the case of single phase 600A current (i.e., 30 times the current), the zero sequence output can operate for a long period of time.
5. The low-temperature drift sampling limit is adopted, the power is 50W, the long-term operation can be realized under 4 times of current, and the short-time operation can be realized under 10 times of overload condition.
6. 100% Of sampling resistor is aged in a factory, so that the stability in long-term use is high, and the change of negative value is small.
Specifically, as shown in fig. 2 to 6, and fig. 8, the conductive loop device includes a conductive rod 5, an isolation blade 6, and an isolation contact 7.
The conducting rod 5 passes through the current-voltage integrated sensor 3 and is connected with a current output end in the breaker main body 1. Referring to fig. 8, the current output terminal connection in the present invention refers to the current output terminal of the vacuum interrupter. The exposed end of the conducting rod 5 is symmetrically provided with two isolation blades 6, and the two isolation blades 6 are connected with the isolation blades 6 through fasteners. The isolation contact 7 is provided on the isolation post 4. The middle section part of the isolation cutting board 6 is provided with a limiting mechanism for adjusting the opening and closing angle of the isolation cutting board. The end of the isolating blade 6, which is far away from the conducting rod 5, is provided with a clamping device, the end of the isolating blade 6, which is far away from the conducting rod 5, is provided with an extension part 27, and the extension part 27 is fixed through a clamping device I arranged on the isolating contact 7.
Further, the fastener includes a threaded rod 9, and a spring 10 and washer 11 that fit over the threaded rod 9. The conducting rod 5 and the isolating blade 6 are connected through a screw 9, a spring 10 and a washer 11 are arranged near the head of the screw 9, two washers 11 are arranged, and the spring 10 is arranged between the two washers 11.
With the above connection method, please refer to fig. 3, the end of the conductive rod 5 is flattened to directly form an installation plane for installing the knife board. Conventionally, the end is a thread on which a number of moving contacts are mounted. Compared with the prior art, the method has the advantages that the cost is saved, and the loop resistance can be reduced due to the reduction of part connection. Offset from the initial section of the spacer blade 6 is avoided to improve the connection stability of the conductive rod 5 and the spacer blade 6.
The limiting mechanism is at least provided with one group, and comprises a first screw rod 12 for connecting the two isolation knife boards 6 with each other and a fixed-width spacer 13 sleeved on the first screw rod 12, wherein the fixed-width spacer 13 is positioned between the two isolation knife boards 6.
By adopting the connection mode, the opening and closing intersection size formed by the two isolation blades 6 can be adjusted by selecting the corresponding fixed-width spacer 13 according to the size of the isolation contact 7 in actual use.
The clamping device comprises a screw rod II 14, a fixed-width spacer sleeve I15 sleeved on the screw rod II 14, a spring I16 and a washer I17. The second screw 14 is used to connect the two spacer blades 6 to each other. The fixed-width spacer bush 15, the first spring 16 and the first gasket 17 are sleeved on the second screw rod 14. The first fixed-width spacer bush 15 is positioned between the two isolation knife plates 6, the first spring 16 and the first washer 17 are arranged close to the head of the second screw rod 14, the first washer 17 is provided with two washers, and the first spring 16 is arranged between the two first washers 17.
The isolation contact 7 is perpendicular to the isolation pillar 4 one end is equipped with two direction heads 8, and the contained angle that forms between direction head 8 and the isolation contact 7 is the acute angle. The guide head 8 and the isolating contact 7 are of an integrated structure. Through setting up guide head 8 in order to cooperate clamping device, the in-process of closing a floodgate makes the accurate counterpoint of isolation cutting board 6 and isolation contact 7 to reduce the resistance.
The first clamping device comprises a clamping frame 32, a guide alignment block 28, a second spring 29, a guide sleeve 30 and a guide post 31. The clamping frame 32 is used for positioning, clamping and guiding the alignment block 28, and the clamping frame 32 is arranged on the isolating contact 7. The guide alignment blocks 28 are provided in two and are provided corresponding to the two spacer blades 6. The guide alignment block 28 is a symmetrical body, and an arc portion is formed on the inner side thereof. The guide sleeve 30 is movably connected with the guide post 31, and is respectively arranged at one side corresponding to the two guide alignment blocks 28, the second spring 29 is sleeved on the guide sleeve 30, one end of the second spring 29 is in contact with the step surface of the guide sleeve 30, and the other end of the second spring 29 is in contact with the step surface of the guide post 31.
With the above technical solution, when the isolating blade 6 rotates to the designated position, one end of the isolating blade 6 away from the conductive rod 5 is electrically connected with the isolating contact 7, and the extension portion 27 is connected with the first clamping device. Through setting up the direction head 8 on isolating contact 7, make isolating knife board 6 and isolating contact 7 accurate position, isolating knife board 6 makes easier with isolating contact 7 in close contact under clamping device's effect, extension 27 is under clamping device one's effect simultaneously, in order to realize carrying out the position to isolating knife board 6 and inject, it contradicts to two separate guide alignment piece 28 through guide pillar 31 guide pin bushing 30 by reciprocating spring 29, make the guide alignment piece 28 carry out the centre gripping to extension 27, avoid isolating knife board 6 and isolating contact 7 to produce clearance and dislocation under the electrodynamic force effect, clamping device one cooperation clamping device, further carry isolating knife board 6 and isolating contact 7's in close contact.
Specifically, as shown in fig. 7, an isolation rotating shaft 18 is rotatably arranged on the mounting frame 2 in a penetrating manner, the isolation rotating shaft 18 is movably connected with an isolation pull rod 20 through a main crank arm 19, and the isolation pull rod 20 is movably connected with the fixed-width spacer 13 through an adjusting bolt 34.
In order to realize rapid opening and closing, the isolating rotation shaft 18 is connected with a reset mechanism, at least one group of reset mechanisms is arranged on the reset mechanism, and the reset mechanism is used for rapidly resetting the isolating rotation shaft 18 in the process of rotating the isolating rotation shaft. The reset mechanism comprises a secondary crank arm 21, a support spring rod 22, a reset spring 23 and a fixing frame 24. The auxiliary crank arm 21 is connected to the isolating rotating shaft 18, the fixing frame 24 is connected to the mounting frame 2, both ends of the supporting spring rod 22 are respectively movably connected with the auxiliary crank arm 21 and the fixing frame 24 through rotating pins, and the restoring spring 23 is sleeved on the supporting spring rod 22.
By adopting the technical scheme, the isolating rotary shaft 18 is rotated clockwise or anticlockwise, the isolating pull rod 20 moves up and down, so that the isolating blade plate 6 rotates by taking the axis of the screw rod 9 as an axis point, and is far away from or connected with the isolating contact 7, and the opening and closing movement is realized.
It should be noted that, the insulating tie rod 26, the current-voltage integrated sensor 3, the conductive loop device, the isolation strut 4 and the isolation tie rod 20 are one group, and three groups are included in an outdoor high-voltage isolation conductive loop junction.
In addition, when the isolating switch is arranged on the circuit breaker, the isolating switch body support is often welded, deformation is easy to generate, the accuracy is poor, and in the combined use process of the isolating switch and the circuit breaker, which are not well matched in installation, the conducting loop parts are too many, so that the loop resistance is easy to rise, and the long-term safe operation of the circuit is not facilitated. The isolating switch (the connection of the isolating rotating shaft 18 and the isolating knife board 6) adopts an assembling mode, and replaces the traditional welding mode. So that the assembly efficiency and the assembly precision are improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. An outdoor secondary fuses high voltage circuit breaker and keeps apart conductive loop structure, its characterized in that includes:
The circuit breaker comprises a circuit breaker main body (1), wherein one side of the circuit breaker main body (1) is provided with a mounting frame (2) and a current-voltage integrated sensor (3), and the mounting frame (2) is provided with an isolation strut (4) which is arranged corresponding to the current-voltage integrated sensor (3);
The conductive loop device comprises a conductive rod (5), an isolation knife board (6) and an isolation contact (7), wherein the conductive rod (5) penetrates through a current-voltage integrated sensor (3) to be connected with a current output end in a breaker main body (1), two isolation knife boards (6) are symmetrically arranged at the exposed end of the conductive rod (5) and are connected with the isolation knife board (6) through fasteners, the isolation contact (7) is arranged on an isolation support column (4), a limiting mechanism for adjusting the opening and closing angle of the isolation knife board (6) is arranged at the middle section of the isolation knife board (6), a clamping device is arranged at one end, far away from the conductive rod (5), of the isolation knife board (6), an extending part (27) is arranged at one end, far away from the conductive rod (5), of the isolation knife board (6), and the extending part (27) is fixed through the clamping device arranged on the isolation contact (7).
When the isolating knife plate (6) rotates to a designated position, one end, far away from the conducting rod (5), of the isolating knife plate (6) is electrically connected with the isolating contact (7), and the extending part (27) is connected with the clamping device I;
one end of the isolation contact (7) perpendicular to the isolation support column (4) is provided with two guide heads (8), and an included angle formed between the guide heads (8) and the isolation contact (7) is an acute angle;
The guide head (8) and the isolation contact (7) are of an integrated structure;
The clamping device comprises a screw rod II (14), a fixed-width spacer sleeve I (15), a spring I (16) and a gasket I (17), wherein the fixed-width spacer sleeve I (15), the spring I (16) and the gasket I (17) are sleeved on the screw rod II (14);
The first fixed-width spacer sleeve (15), the first spring (16) and the first gasket (17) are sleeved on the second screw rod (14), the first fixed-width spacer sleeve (15) is positioned between the two spacer blades (6), the first spring (16) and the first gasket (17) are arranged close to the head of the second screw rod (14), the first gasket (17) is provided with two springs, and the first spring (16) is arranged between the two first gaskets (17);
the clamping device I comprises a clamping frame (32), a guide alignment block (28), a spring II (29), a guide sleeve (30) and a guide pillar (31);
The clamping frame (32) is used for positioning, clamping and guiding alignment blocks (28), the clamping frame (32) is arranged on the isolation contact (7), the two guiding alignment blocks (28) are arranged and correspond to the two isolation knife boards (6), the guiding alignment blocks (28) are symmetrical bodies, the inner sides of the guiding alignment blocks are provided with arc parts, the guide sleeves (30) are movably connected with the guide posts (31), the two guiding alignment blocks (28) are respectively arranged on one corresponding side, the second spring (29) is sleeved on the guide sleeve (30), one end of the second spring (29) is in contact with the step surface of the guide sleeve (30), and the other end of the second spring is in contact with the step surface of the guide post (31).
2. The outdoor two-shot high voltage circuit breaker isolation conductive loop structure of claim 1, wherein the fastener comprises a screw (9), and a spring (10) and a washer (11) that fit over the screw (9);
The electric conduction rod (5) is connected with the isolation cutting board (6) through the screw rod (9), the spring (10) and the gasket (11) are arranged close to the head of the screw rod (9), the two gaskets (11) are arranged, and the spring (10) is arranged between the two gaskets (11).
3. The outdoor secondary fused high-voltage circuit breaker isolation conductive loop structure according to claim 2, wherein the limiting mechanism is at least provided with one group, the limiting mechanism comprises a first screw (12) for connecting two isolation blades (6) with each other and a width-fixing spacer (13) sleeved on the first screw (12), and the width-fixing spacer (13) is positioned between the two isolation blades (6).
4. The outdoor secondary fuses high-voltage circuit breaker isolation conductive loop structure according to claim 1 or 3, wherein an isolation rotating shaft (18) is rotatably arranged on the mounting frame (2) in a penetrating mode, the isolation rotating shaft (18) is movably connected with an isolation pull rod (20) through a main crank arm (19), and the isolation pull rod (20) is movably connected with the fixed-width spacer bush (13) through an adjusting bolt (34).
5. The outdoor secondary fusion high-voltage circuit breaker isolation conductive loop structure according to claim 4, wherein the isolation rotating shaft (18) is connected with a reset mechanism, at least one group of reset mechanisms is arranged, and each reset mechanism comprises a secondary crank arm (21), a spring supporting rod (22), a reset spring (23) and a fixing frame (24);
The auxiliary crank arm (21) is connected to the isolation rotating shaft (18), the fixing frame (24) is connected to the mounting frame (2), two ends of the spring supporting rod (22) are respectively movably connected with the auxiliary crank arm (21) and the fixing frame (24) through rotating pins, and the return spring (23) is sleeved on the spring supporting rod (22).
6. The outdoor two-time fusion high-voltage circuit breaker isolation conductive loop structure according to claim 1, wherein the circuit breaker main body (1) comprises a sealed metal box (33) and three-phase poles (25) arranged on the sealed metal box (33), and each phase of poles (25) is provided with a vacuum arc extinguishing chamber and an insulating pull rod (26) for controlling the opening or closing of the vacuum arc extinguishing chamber;
The outdoor high-voltage isolation conductive loop comprises an insulation pull rod (26), a current-voltage integrated sensor (3), a conductive loop device, an isolation support column (4) and an isolation pull rod (20), wherein the insulation pull rod, the current-voltage integrated sensor, the isolation support column and the isolation pull rod are in one group, and three groups are included in the outdoor high-voltage isolation conductive loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310946936.2A CN116864341B (en) | 2023-07-31 | 2023-07-31 | Isolation conductive loop structure of outdoor secondary fusion high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310946936.2A CN116864341B (en) | 2023-07-31 | 2023-07-31 | Isolation conductive loop structure of outdoor secondary fusion high-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116864341A CN116864341A (en) | 2023-10-10 |
| CN116864341B true CN116864341B (en) | 2024-06-11 |
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| CN120261209B (en) * | 2025-04-10 | 2025-10-10 | 江苏镇德电力设备有限公司 | A burn-proof primary and secondary fusion sleeve column circuit breaker |
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| CN116864341A (en) | 2023-10-10 |
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