CN215266071U - Movable end flexible connection structure for vacuum circuit breaker - Google Patents
Movable end flexible connection structure for vacuum circuit breaker Download PDFInfo
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- CN215266071U CN215266071U CN202121294860.2U CN202121294860U CN215266071U CN 215266071 U CN215266071 U CN 215266071U CN 202121294860 U CN202121294860 U CN 202121294860U CN 215266071 U CN215266071 U CN 215266071U
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Abstract
A movable end flexible connection structure for a vacuum circuit breaker overcomes the problem that the conductive flexible connection structure in the prior art can only be provided with a group of conductive flexible connections and cannot meet the use requirement under the working condition that the rated current is larger than 3150A temperature rise permission value, and is characterized in that a first flexible connection conductor is sleeved on a middle long screw rod extending out of the left side surface of a left conductive plate, a second flexible connection conductor is arranged on every 2 long screw rods between a left conductive plate and a right conductive plate, a conductive copper sleeve and a conductive clamping block are arranged on short screw rods correspondingly arranged at the lower ends of the first flexible connection conductor and the second flexible connection conductor, a third flexible connection conductor is sleeved on a secondary short screw rod arranged on front and back 2 conductive clamping blocks, and the movable end flexible connection structure has the advantages that 7 flexible connection conductors are simultaneously connected between an intermediate conductor of an isolating switch and a vacuum arc extinguishing chamber, the conductive contact area is multiplied, and the through-current capacity is increased, the temperature rise permission value is improved, and the structure is simple and compact, the connection is reliable, the volume is small, and the assembly is convenient.
Description
Technical Field
The utility model belongs to the technical field of high-voltage apparatus, in particular to vacuum circuit breaker moves a flexible coupling structure that moves of electrically conductive connection among the heavy current gas insulated metal enclosed switchgear for vacuum circuit breaker.
Background
In the prior art, the conductive flexible connection is a conductor conductive connection, particularly a common connection structure of the flexible conductive connection, but the flexible conductive connection is rarely applied to the dynamic conductive connection of a vacuum circuit breaker of gas insulated metal-enclosed switchgear, but is generally realized by using spring contact finger connection.
The applicant discloses a high pressure vacuum circuit breaker in utility model with application number CN201821322661.6, this utility model discloses including adopting the electrically conductive soft connection structure of welded formula, the electrically conductive soft connection of its welded formula is the electrically conductive soft connection structure of two side welding formulas, the last electric conductor of soft electric conductor and lower electric conductor form and be asymmetric U-shaped by the coincide of multilayer thin copper board, its long end welds with electrically conductive connecting plate respectively, its short-end welds with last clamp and lower clamp respectively, this utility model discloses the temperature rise permission value is higher, be applicable to the product of great electric current, but only be applicable to the high pressure vacuum circuit breaker that rated current is 3150A below, and the electrically conductive soft connection structure processing technology of welded formula is complicated, and, this utility model has the current structure and can only install the electrically conductive soft connection structure of a set of welded formula, can't be applicable to the temperature rise permission value that rated current is greater than 3150A.
The invention with the application number of CN201910169941.0 discloses a high-current inflatable high-voltage switch cabinet, wherein the movable end of a circuit breaker is connected with an outlet copper bar through flexible connection; the movable end of the vacuum arc extinguish chamber of the circuit breaker is connected with the flexible connection and the insulating pull rod, and the drawing shows that the movable end of the vacuum arc extinguish chamber of the circuit breaker is connected with the outgoing line copper bar at the lower part of the switch air chamber through the flexible connection, and each phase only has one flexible connection, so that the movable end of the vacuum arc extinguish chamber of the circuit breaker can not meet the requirement of the movable conductive connection of the vacuum circuit breaker in the large-current gas-insulated metal closed switch equipment used under the working condition that the rated current is larger than 3150A and the temperature rise allowable value.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome prior art's weak point, provide one kind and can improve the temperature rise admissible value, be applicable to one kind that the rated current is greater than the temperature rise admissible value operating mode of 3150A and use a flexible connection structure that moves end for vacuum circuit breaker.
The technical proposal adopted by the utility model comprises an upper current-conducting plate, a left current-conducting plate and a right current-conducting plate are welded on the lower surface of the upper current-conducting plate, the length of the left current-conducting plate is less than that of the right current-conducting plate, an inverted U-shaped current-conducting frame with an opening at the lower part is formed by the upper current-conducting plate, 4 groups of long screw rod mounting holes are correspondingly processed on the left current-conducting plate and the right current-conducting plate from front to back, 4 groups of long screw rod mounting holes correspondingly processed on the left current-conducting plate and the right current-conducting plate are respectively provided with a long screw rod, a first flexible connection conductor is sheathed on a middle long screw rod extending out of the left side surface of the left current-conducting plate, the left end of each long screw rod is in threaded connection with a fixed sleeve, the first flexible connection conductor is locked and fixed by the fixed sleeve, at least 2 rows of second flexible connection conductors are arranged on every 2 long screw rods between the left current-conducting plate and the right current-conducting plate from left to right, 2 rows of front and back of each row are respectively fixed by second locking nuts, a first conductive block is arranged between the right side surface of the rightmost second flexible connection conductor and the right conductive plate, the right end of each long screw rod extending out of the right side surface of the right conductive plate is locked and fixed through a first nut, 4 groups of short screw rod mounting holes are correspondingly processed at the lower ends of the first flexible connection conductor and the second flexible connection conductor from front to back, a short screw rod is arranged in each short screw rod mounting hole correspondingly processed at the lower ends of the first flexible connection conductor and the second flexible connection conductor, a conductive copper sleeve is arranged on each short screw rod between the first flexible connection conductor and the second flexible connection conductor, a conductive clamping block is arranged between every 2 second flexible connection conductors, and the left end and the right end of each short screw rod are respectively locked and fixed through a third nut; the front and back 2 conductive clamping blocks are respectively provided with 2 sub-short screw mounting holes, the sub-short screws are mounted in the sub-short screw mounting holes, the sub-short screws extending out of the right side face of the conductive clamping blocks are sleeved with front and back 2 third flexible connecting conductors, the left and right ends of the sub-short screws are locked and fixed through fourth nuts respectively, the front and back 2 third flexible connecting conductors are correspondingly processed with the lower ends of the right conductive plates to form mounting screw holes, the mounting screws are mounted in the correspondingly processed mounting screw holes, the second conductive block is mounted between the third flexible connecting conductors and the right conductive plates, and the right end of the mounting screw is locked and fixed through fifth nuts.
The length of left current conducting plate is 100 ~ 120mm, the length of right current conducting plate is 350 ~ 400 mm.
Stepped inner holes and inner threaded holes are symmetrically processed on the front conductive clamping block and the rear conductive clamping block, an inner hexagon screw used for tightly holding and fixing the movable conductive rod of the vacuum arc extinguish chamber is installed in the stepped inner hole of each conductive clamping block, and the inner hexagon screws are locked and fixed through the inner threaded holes symmetrically processed on the left conductive clamping block and the right conductive clamping block.
The first flexible connection conductor, the second flexible connection conductor and the third flexible connection conductor are identical in shape, are formed by overlapping a plurality of layers of thin copper plates, arc-shaped surfaces protruding towards the right side are arranged in the middle of the conductors, silver plating is carried out on the conductive connection surfaces of the arc-shaped surfaces to form silver plated layers, and a third connection hole is processed in the first flexible connection conductor.
The upper conducting plate is provided with a plurality of first connecting holes used for being connected with a middle conductor of the isolating switch, and the right conducting plate is provided with a plurality of second connecting holes used for being connected with a supporting frame of the vacuum arc extinguish chamber.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model has the advantages that the upper current-conducting plate, the left current-conducting plate and the right current-conducting plate form an inverted U-shaped current-conducting frame with an opening at the lower part, a plurality of flexible connection conductors can be installed, the current-conducting capacity is large, and the moving operation resistance is small;
(2) the first flexible connection conductor, the second flexible connection conductor and the third flexible connection conductor are identical in shape, are formed by overlapping multiple layers of thin copper plates, arc-shaped surfaces protruding towards the right side are arranged in the middle of the conductors, and silver plating is performed on the conductive connection surfaces of the arc-shaped surfaces to form silver plated layers, so that the temperature rise permission value is improved, and the flexible connection conductor has the advantages of simple and compact processing technology, simple and compact structure, reliable connection, small volume and convenience in assembly;
(3) the utility model discloses during operation, 1 first flexible connection conductor, 2 every row 2 in front and back totally 4 second flexible connection conductors and 2 third flexible connection conductors in front and back totally 7 flexible connection conductors are connected between isolator intermediate conductor and vacuum interrupter through left current conducting plate and right current conducting plate simultaneously, have increased the conductive area of contact at double, have increased the through-flow capacity; the linear motion stroke output by the circuit breaker operating mechanism drives the moving contact of the vacuum arc-extinguishing chamber to move through the pull rod insulator of the circuit breaker mechanism to complete the switching-on and switching-off operation of the vacuum circuit breaker, the operating stress of the operating pull rod insulator of the circuit breaker mechanism is reduced through the flexible connection structure of the moving end of the vacuum arc-extinguishing chamber, the switching-on and switching-off operation action of the vacuum circuit breaker is operated by the circuit breaker operating mechanism with smaller output power, the heat dissipation effect is good, the output power of the operating mechanism is small, the mechanical property and the electrical property are good, the temperature rise allowable value can be improved, the circuit breaker operating mechanism is suitable for being used under the working condition that the rated current is greater than the temperature rise allowable value of 3150A, and the requirement of dynamic conductive connection of the vacuum circuit breaker in a large-current gas insulation metal closed switch device used under the working condition that the rated current is greater than the temperature rise allowable value of 3150A is met.
Drawings
Figure 1 is a perspective view of the present invention,
figure 2 is a front view of the present invention,
figure 3 is a left side view of figure 2,
figure 4 is a cross-sectional view a-a of figure 3,
figure 5 is a cross-sectional view B-B of figure 3,
figure 6 is a cross-sectional view through C-C of figure 3,
fig. 7 is a schematic view of an assembly structure applied to a vacuum circuit breaker.
In the figure:
1. an upper conductive plate having a plurality of conductive holes,
1-1, a first connection hole,
2. a right conductive plate, a first conductive plate,
2-1, a second connecting hole,
3. a left conductive plate having a first end and a second end,
4. mounting screw
5-1, a first flexible connection conductor,
5-11, a third connecting hole,
5-2. a second flexible connection conductor,
5-3, a third flexible connection conductor,
6-1. a first conductive block,
6-2. a second conductive block,
7. the conductive clamping blocks are arranged on the outer side of the shell,
8. the length of the long screw rod is long,
9-1, a first nut, 9-2, a second nut,
9-3, a third nut, 9-4, a fourth nut, 9-5, a fifth nut,
10. a fixing sleeve is arranged on the upper end of the sleeve,
11-1. short screw, 11-2. time short screw,
12. a copper sleeve is arranged on the outer side of the copper sleeve,
13. the inner hexagonal screw is provided with a screw hole,
14. a sixth nut is arranged on the first nut,
15. a seventh nut is arranged on the first nut,
16. a first support insulator for supporting the first electrode,
17. a pull rod insulator is arranged on the upper surface of the pull rod,
18. the middle conductor of the isolating switch is provided with a plurality of isolating switches,
19. a vacuum arc-extinguishing chamber is arranged on the vacuum arc-extinguishing chamber,
20. a supporting frame of a vacuum arc-extinguishing chamber,
21. a second support insulator, which is a second support insulator,
22. a circuit breaker operating mechanism.
Detailed Description
As shown in fig. 1-6, the utility model discloses a technical scheme include current conducting plate 1, process on last current conducting plate 1 that a plurality of is used for the first connecting hole 1-1 of being connected with isolator's intermediate conductor, have left current conducting plate 3 and right current conducting plate 2 at the lower skin weld of last current conducting plate 1, by last current conducting plate 1, left current conducting plate 3 and right current conducting plate 2 constitute lower part open-ended type conductive frame of falling U, process on right current conducting plate 2 that a plurality of is used for the second connecting hole 2-1 of being connected with the vacuum interrupter support frame, left current conducting plate 3's length is less than right current conducting plate 2, specifically says, left current conducting plate 3's length is 100 ~ 120mm, right current conducting plate 2's length is 350 ~ 400mm, corresponds by preceding to the back on left current conducting plate 3 and right current conducting plate 2 and has 4 groups of long screw rod mounting holes, installs long screw rod 8 respectively in the 4 groups of corresponding processing long screw rod mounting holes on left current conducting plate 3 and right current conducting plate 2 The device comprises a left conductive plate 3, a right conductive plate 2, a left end of each long screw 8, 2 middle long screws 8 extending out of the left side surface of the left conductive plate 3, a first flexible connecting conductor 5-1 sleeved on each middle long screw 8, a fixed sleeve 10 connected with the left end of each long screw 8, the first flexible connecting conductor 5-1 locked and fixed through the fixed sleeve 10, 2 rows of 2 second flexible connecting conductors 5-2 respectively arranged in front and at back of each row and locked and fixed through second nuts 9-2, a first conductive block 6-1 arranged between the right side surface of the rightmost second flexible connecting conductor 5-2 and the right conductive plate 2, the right end of each long screw 8 extending out of the right side surface of the right conductive plate 2 and fixed through a first nut 9-1, 4 groups of short screw mounting holes correspondingly processed at the lower ends of the first flexible connecting conductor 5-1 and the second flexible connecting conductor 5-2 from front to back, a short screw 11-1 is arranged in a short screw mounting hole correspondingly processed at the lower end of each first soft connection conductor 5-1 and each second soft connection conductor 5-2, a conductive copper sleeve 12 is arranged on the short screw 11-1 between the first soft connection conductor 5-1 and each second soft connection conductor 5-2, a conductive clamping block 7 is arranged between each 2 second soft connection conductors 5-2, and the left end and the right end of each short screw 11-1 are respectively locked and fixed through a third nut 9-3; the front and back 2 conductive clamping blocks 7 are respectively provided with 2 sub-short screw mounting holes, the sub-short screws 11-2 are mounted in the sub-short screw mounting holes, the front and back 2 third flexible connecting conductors 5-3 are sleeved on the sub-short screws 11-2 extending out of the right side surface of the conductive clamping blocks 7, the left and right ends of the sub-short screws 11-2 are respectively locked and fixed through fourth nuts 9-4, the front and back 2 third flexible connecting conductors 5-3 and the lower end of the right conductive plate 2 are correspondingly provided with mounting screw holes, mounting screws 4 are mounted in the correspondingly processed mounting screw holes, second conductive blocks 6-2 are mounted on the mounting screws 4 between the third flexible connecting conductors 5-3 and the right conductive plate 2, and the right ends of the mounting screws 4 are locked and fixed through fifth nuts 9-5.
The first flexible connection conductor 5-1, the second flexible connection conductor 5-2 and the third flexible connection conductor 5-3 are the same in shape, arc-shaped surfaces protruding towards the right side are arranged in the middle of the first flexible connection conductor 5-1, so that the structure is more compact, the conductive area is enlarged in a smaller space, and a third connection hole 5-11 is formed in the first flexible connection conductor 5-1.
As shown in fig. 5 and 6, stepped inner holes and internal thread holes are symmetrically processed on the front and rear 2 conductive clamping blocks 7, an inner hexagon screw 13 for holding and fixing the movable conductive rod of the vacuum arc-extinguishing chamber is installed in the stepped inner hole of each conductive clamping block 7, and the inner hexagon screw 13 is locked and fixed through the internal thread holes symmetrically processed on the left and right 2 conductive clamping blocks 7.
As shown in fig. 1 to fig. 3 and fig. 7, in use, the first connecting hole 1-1 of the upper conductive plate 1 is connected with the middle conductor 18 of the isolating switch by a sixth screw 14, the upper and lower 2 second connecting holes 2-1 of the right conductive plate 2 are connected with the vacuum arc-extinguishing chamber support frame 20 by a seventh screw 15, the movable conductive rod of the vacuum arc-extinguishing chamber 19 is clasped and fixed by an inner hexagon screw 13 installed in the stepped inner hole of the 2 conductive clamping blocks 7, the pull rod insulator 17 passes through the third connecting hole 5-11 of the first flexible connecting conductor 5-1 to be in threaded connection with the movable conductive rod of the vacuum arc-extinguishing chamber 19 and is locked and fixed by a nut on the left side of the first flexible connecting conductor 5-1, is connected with the first supporting insulator 16 by a fixed sleeve 10, and is connected with the second supporting insulator 21 by an installation screw 4. When the isolating switch works, 1 first flexible connecting conductor 5-1, 2 rows of 4 second flexible connecting conductors 5-2 at the front and back, and 2 rows of third flexible connecting conductors 5-3 at the front and back are connected between the isolating switch intermediate conductor 18 and the vacuum arc-extinguishing chamber 19 through the left conductive plate 3 and the right conductive plate 2, so that the conductive contact area is increased by times, and the current capacity is increased; the linear motion stroke output by the circuit breaker operating mechanism 22 drives the movable conducting rod of the vacuum arc-extinguishing chamber 19 to move through the pull rod insulator 17 to complete the switching-on and switching-off operation of the vacuum circuit breaker, and the operating stress of the pull rod insulator 17 is reduced through the flexible connection structure of the movable end of the vacuum arc-extinguishing chamber, so that the switching-on and switching-off operation action of the vacuum circuit breaker is operated by the circuit breaker operating mechanism with smaller output work.
Claims (5)
1. A movable end flexible connection structure for a vacuum circuit breaker comprises an upper conductive plate (1), wherein a left conductive plate (3) and a right conductive plate (2) are welded on the lower surface of the upper conductive plate (1), and is characterized in that the length of the left conductive plate (3) is smaller than that of the right conductive plate (2), an inverted U-shaped conductive frame with an opening at the lower part is formed by the upper conductive plate (1), the left conductive plate (3) and the right conductive plate (2), 4 groups of long screw rod mounting holes are correspondingly processed from front to back on the left conductive plate (3) and the right conductive plate (2), long screw rods (8) are respectively installed in the 4 groups of long screw rod mounting holes correspondingly processed on the left conductive plate (3) and the right conductive plate (2), a first flexible connection conductor (5-1) is sleeved on 2 middle long screw rods (8) extending out of the left side surface of the left conductive plate (3), and the left end of each long screw rod (8) is in threaded connection with a fixed sleeve (10), the first flexible connection conductor (5-1) is locked and fixed through a fixing sleeve (10), at least 2 rows of front and rear 2 second flexible connection conductors (5-2) are arranged on every 2 long screw rods (8) between a left current conducting plate (3) and a right current conducting plate (2) from left to right and are locked and fixed through second nuts (9-2), a first current conducting block (6-1) is arranged between the right side surface of the rightmost second flexible connection conductor (5-2) and the right current conducting plate (2), the right end of each long screw rod (8) extending out of the right side surface of the right current conducting plate (2) is locked and fixed through the first nut (9-1), 4 groups of short screw rod mounting holes are correspondingly machined at the lower ends of the first flexible connection conductor (5-1) and the second flexible connection conductor (5-2) from front to back, and 4 groups of short screw rod mounting holes are correspondingly machined at the lower ends of the first flexible connection conductor (5-1) and the second flexible connection conductor (5-2) A short screw (11-1) is arranged in a short screw mounting hole of a worker, a conductive copper sleeve (12) is arranged on the short screw (11-1) between a first flexible connection conductor (5-1) and a second flexible connection conductor (5-2), a conductive clamping block (7) is arranged between every 2 second flexible connection conductors (5-2), and the left end and the right end of the short screw (11-1) are locked and fixed through a third nut (9-3) respectively; 2 sub-short screw mounting holes are respectively processed on the front and the back 2 conductive clamping blocks (7), and a sub-short screw (11-2) is mounted in the sub-short screw mounting holes, a secondary short screw rod (11-2) extending out of the right side surface of the conductive clamping block (7) is sleeved with a front and a rear 2 third flexible connecting conductors (5-3), the left end and the right end of the secondary short screw rod (11-2) are respectively locked and fixed through a fourth nut (9-4), mounting screw holes are correspondingly processed at the lower ends of the front and back 2 third flexible connecting conductors (5-3) and the right conductive plate (2), mounting screws (4) are mounted in the correspondingly processed mounting screw holes, a second conductive block (6-2) is arranged on the mounting screw rod (4) between the third flexible connection conductor (5-3) and the right conductive plate (2), the right end of the mounting screw rod (4) is locked and fixed by a fifth nut (9-5).
2. The flexible connection structure of the moving end for the vacuum circuit breaker according to claim 1, wherein the length of the left conductive plate (3) is 100-120 mm, and the length of the right conductive plate (2) is 350-400 mm.
3. The flexible connection structure of the movable end for the vacuum circuit breaker according to claim 1, characterized in that stepped inner holes and inner threaded holes are symmetrically processed on the front and rear 2 conductive clamping blocks (7), an inner hexagonal screw (13) for holding and fixing the movable conductive rod of the vacuum interrupter is installed in the stepped inner hole of each conductive clamping block (7), and the inner hexagonal screw (13) is locked and fixed through the inner threaded holes symmetrically processed on the left and right 2 conductive clamping blocks (7).
4. The movable end soft connection structure for the vacuum circuit breaker according to claim 1, wherein the first soft connection conductor (5-1), the second soft connection conductor (5-2) and the third soft connection conductor (5-3) are identical in shape, are formed by laminating a plurality of thin copper plates, arc-shaped surfaces protruding towards the right side are arranged in the middle of the copper plates, silver plating is performed on the conductive connection surfaces of the arc-shaped surfaces to form silver plated layers, and the third connection hole (5-11) is processed on the first soft connection conductor (5-1).
5. The flexible connection structure of the moving end for the vacuum circuit breaker according to claim 1, characterized in that a plurality of first connection holes (1-1) for connecting with the middle conductor of the disconnecting switch are processed on the upper conductive plate (1), and a plurality of second connection holes (2-1) for connecting with the vacuum interrupter support frame are processed on the right conductive plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294860.2U CN215266071U (en) | 2021-06-10 | 2021-06-10 | Movable end flexible connection structure for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294860.2U CN215266071U (en) | 2021-06-10 | 2021-06-10 | Movable end flexible connection structure for vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215266071U true CN215266071U (en) | 2021-12-21 |
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ID=79478373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121294860.2U Active CN215266071U (en) | 2021-06-10 | 2021-06-10 | Movable end flexible connection structure for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215266071U (en) |
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2021
- 2021-06-10 CN CN202121294860.2U patent/CN215266071U/en active Active
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