CN110767498A - Low-power consumption 10kV outdoor vacuum circuit breaker - Google Patents
Low-power consumption 10kV outdoor vacuum circuit breaker Download PDFInfo
- Publication number
- CN110767498A CN110767498A CN201911212088.2A CN201911212088A CN110767498A CN 110767498 A CN110767498 A CN 110767498A CN 201911212088 A CN201911212088 A CN 201911212088A CN 110767498 A CN110767498 A CN 110767498A
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- box body
- pull rod
- rod
- insulating
- circuit breaker
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- 230000007246 mechanism Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 11
- 238000000429 assembly Methods 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a low-power consumption 10kV outdoor vacuum circuit breaker, which comprises a box body, wherein three groups of insulating barrels are installed at the top of a top plate of the box body, pull rod assemblies used for driving a moving contact in a vacuum arc extinguishing chamber to act are respectively arranged in each insulating barrel, a driving device used for driving the pull rod assemblies to move up and down is also arranged in the box body, each pull rod assembly comprises an insulating pull rod, a guide rod and a pressure spring, and three groups of connecting assemblies in one-to-one correspondence with the pull rod assemblies are arranged in the box body; a linkage rod connected with the driving device is further arranged in the box body, and the linkage rod is further respectively and rotatably connected with connecting plates in the three groups of connecting components; and a tension spring is also arranged in the box body, one end of the tension spring is connected with the linkage rod, and the other end of the tension spring is connected with the side plate of the box body. The invention has the advantages of few transmission parts, short transmission path, small frictional resistance, short brake-separating time, high efficiency and convenient over travel adjustment.
Description
Technical Field
The invention relates to an outdoor vacuum circuit breaker.
Background
Vacuum circuit breakers are one of the important devices in electrical power distribution systems, and are used primarily to make and break high voltage lines.
The vacuum circuit breaker in the prior art has the following defects: (1) the spring operating mechanism has the advantages of more transmission parts, long transmission path, large resistance when pushing the pull rod assembly, high power consumption and long brake opening time; (2) the over-travel adjustment is inconvenient and cannot be realized continuously.
Disclosure of Invention
The invention provides a low-power consumption 10kV outdoor vacuum circuit breaker, which aims to: (1) the transmission structure and the action resistance are optimized, and the brake separating time is shortened; (2) the over travel adjustment is convenient, and the continuous adjustment is realized.
The technical scheme of the invention is as follows:
a low-power consumption 10kV outdoor vacuum circuit breaker comprises a box body, wherein three groups of insulating barrels are mounted at the top of a top plate of the box body, vacuum arc extinguishing chambers are respectively arranged at the upper parts of inner cavities of the insulating barrels, pull rod assemblies used for driving moving contacts in the vacuum arc extinguishing chambers to act are respectively arranged in the insulating barrels, a driving device used for driving the pull rod assemblies to move up and down is further arranged in the box body, each pull rod assembly comprises an insulating pull rod, a guide rod and a pressure spring, the upper end of each insulating pull rod is used for controlling the corresponding moving contact, the lower end of each insulating pull rod is matched with a guide hole in the upper end of the corresponding guide rod; a pin shaft perpendicular to the axis of the guide hole is fixedly arranged in the guide hole of the guide rod and is matched with a strip-shaped hole formed in the lower end of the insulating pull rod; the pressure spring is arranged between the insulating pull rod and the guide rod;
three groups of connecting components which correspond to the pull rod components one to one are arranged in the box body;
the connecting assembly comprises a support fixed in the box body, a square shaft and a connecting plate in rotary connection with the support, a sliding groove is formed in the connecting plate, and a round shaft on the square shaft is matched with the sliding groove to realize movement along the sliding groove and rotation relative to the connecting plate; the threaded rod at the lower end of the guide rod penetrates through the through hole in the square shaft, the upper side and the lower side of the square shaft are respectively provided with an upper nut and a lower nut, and the upper nut and the lower nut are matched with the threaded rod to fix the square shaft on the guide rod;
a linkage rod connected with the driving device is further arranged in the box body, and the linkage rod is further respectively and rotatably connected with connecting plates in the three groups of connecting components;
and a tension spring is further arranged in the box body, one end of the tension spring is connected with the linkage rod, and the other end of the tension spring is connected with the side plate of the box body.
As a further improvement of the device: two ends of the pin shaft are located on the outer side of the outer circle surface of the guide rod, and three groups of holes matched with the pull rod assembly and the pin shaft are formed in the top plate of the box body.
As a further improvement of the device: the driving device is a spring operating mechanism, and the spring operating mechanism is connected with a mounting block welded at the bottom of a top plate of the box body through a bolt.
As a further improvement of the device: the upper end of the insulating pull rod is connected with the moving contact through a double-headed screw.
Compared with the prior art, the invention has the following beneficial effects: (1) the linkage rod drives the three groups of pull rod assemblies to synchronously act through the connecting assembly, the connecting assembly takes the connecting plate as a main part, the connecting plate is matched with the square shaft arranged on the pull rod assemblies through the round shaft and sliding groove structures, the number of transmission parts is small, the transmission path is short, the friction resistance is small, on one hand, the opening time is short, the level difference protection is easy to realize, on the other hand, the required power is low, the mechanical performance required by the circuit breaker can be met by using the spring operating mechanism with lower power consumption, and the electric energy is saved; (2) the mechanical characteristics and the performance of the circuit breaker are greatly influenced by the over travel (2-3.5 mm) of the circuit breaker, the position of the square shaft can be changed by the structure through the position of the rotating nut, the continuous adjustability of the over travel is realized, the operation efficiency is obviously improved, and the overall performance of the circuit breaker is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of the circuit breaker.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 4 is a partial schematic view of a portion of a connection assembly.
Fig. 5 is a schematic structural view of the tie rod assembly.
Fig. 6 is a bottom view of the box portion.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
as shown in fig. 1 and 2, the low-power consumption 10kV outdoor vacuum circuit breaker comprises a welding box body 1, three groups of insulating cylinders 5 are installed at the top of a top plate of the box body 1, vacuum arc-extinguishing chambers 6 are respectively arranged at the upper parts of inner cavities of the insulating cylinders 5, pull rod assemblies 8 used for driving moving contacts in the vacuum arc-extinguishing chambers 6 to act are respectively arranged in the insulating cylinders 5, a spring operating mechanism 2 used for driving the pull rod assemblies 8 to move up and down is further arranged in the box body 1, and the spring operating mechanism 2 is connected with a mounting block 16 welded at the bottom of the top plate of the box body 1 through bolts.
As shown in fig. 5, the pull rod assembly 8 includes an insulating pull rod 8-1, a guide rod 8-3 and a pressure spring 8-2, and an upper end of the insulating pull rod 8-1 is connected to the movable contact through a double-headed screw 7 and fastened by a nut and a spring washer. The lower end of the insulating pull rod 8-1 is matched with a guide hole at the upper end of the guide rod 8-3. The pressure spring 8-2 is arranged between the insulating pull rod 8-1 and the guide rod 8-3, and two ends of the pressure spring are respectively provided with a spring cap. After assembly, the pressure spring 8-2 is pre-pressed for a certain length.
The lower end of the guide rod 8-3 is provided with a threaded rod; and a pin shaft 8-4 vertical to the axis of the guide hole is fixedly arranged in the guide hole of the guide rod 8-3, and the pin shaft 8-4 is matched with a strip-shaped hole formed at the lower end of the insulating pull rod 8-1. And two ends of the pin shaft 8-4 are positioned on the outer side of the outer circular surface of the guide rod 8-3. As shown in fig. 6, three sets of openings 1-1 matched with the pull rod assembly 8 and the pin 8-4 are formed in the top plate of the box body 1, the openings 1-1 are formed by overlapping a round hole and a strip-shaped square hole, the length of the strip-shaped square hole is larger than the diameter of the round hole, the pin 8-4 can conveniently pass through the top plate of the box body 1 during assembly, meanwhile, the round hole of the pull rod assembly 8 can be positioned, and the pull rod assembly 8 is guaranteed to move along the up-down direction all the time.
For example, 1, 3 and 4, three groups of connecting components corresponding to the pull rod components 8 one by one are arranged in the box body 1.
The connecting assembly comprises a U-shaped support 10 welded in the box body 1, and symmetrical holes are formed in the support 10 and used for achieving rotating connection. The connection assembly further comprises two side plate brackets 10 located on the bracket 10: a square shaft 9 and a connecting plate 15 which is rotatably connected with the bracket 10 through a supporting shaft 13.
As shown in fig. 3 and 4, the connecting plate 15 is provided with a sliding slot, and the round shaft on the square shaft 9 is matched with the sliding slot to realize the movement along the sliding slot and the rotation relative to the connecting plate 15; the threaded rod at the lower end of the guide rod 8-3 penetrates through the through hole in the square shaft 9, the upper side and the lower side of the square shaft 9 are respectively provided with an upper nut 11 and a lower nut 12, the upper nut 11 and the lower nut 12 are matched with the threaded rod to fix the square shaft 9 on the guide rod 8-3, and a spring washer is arranged at the nut.
The box body 1 is also internally provided with a linkage rod 3 connected with the driving device, and the linkage rod 3 is also rotatably connected with connecting plates 15 in the three groups of connecting assemblies through a rotating shaft 14 respectively to realize the linkage of the three groups of connecting plates 15.
The box body 1 is also provided with a tension spring 4, one end of the tension spring 4 is connected with the linkage rod 3 through a spring hanging plate, and the other end of the tension spring is connected with a side plate of the box body 1 through a spring hanging plate. The spring hanging plate is provided with a round hole matched with the spring wire of the tension spring 4.
The specific assembly process is as follows:
one end of the double-head screw 7 is screwed into the moving contact end of the vacuum arc-extinguishing chamber 6, and the other end is screwed into the insulating pull rod 8-1 and is fastened through a nut and a spring washer. And after assembly, the vacuum arc-extinguishing chamber is arranged in the insulating cylinder 5, a lead screw at one end of the vacuum arc-extinguishing chamber 6 is exposed out of the upper part of the insulating cylinder 5, and the vacuum arc-extinguishing chamber 6 is fixed in the insulating cylinder 5 through a nut. The lower end of the guide rod 8-3 penetrates through the opening 1-1 on the box body 1, and then the insulating cylinder 5 is fixed on the box body 1.
The square shaft 9 is connected with an upper chute of the connecting plate 15, the connecting plate 15 is arranged on the U-shaped support 10, a threaded rod part on the guide rod 8-3 penetrates through the square shaft 9, nuts and spring washers are arranged on the upper plane and the lower plane of the square shaft 9, and the guide rod 8-3 and the square shaft 9 are fixed together.
The spring operating mechanism 2 is fixed on a mounting plate on the box body 1 through 4 sets of bolts, spring washers and flat pads, an output crank arm of the spring operating mechanism 2 is connected with the linkage rod 3 through a connecting shaft, and meanwhile, the linkage rod 3 is connected with the three groups of connecting plates 15.
The hanging spring shaft passes through a round hole on the linkage rod 3. The round hole of the spring hanging plate at one end of the opening spring component formed by the two groups of tension springs 4 is connected with the hanging spring shaft, and the round hole of the spring hanging plate at the other end is connected with the round hole on the U-shaped bent plate on the box body 1.
When the circuit breaker is used, the low-power-consumption energy storage motor in the spring operating mechanism 2 rotates to pull open the spring therein to complete energy storage, then a power supply of a closing coil is switched on, a closing coil thimble impacts a closing disengaging semi-axis crank arm to rotate, a linkage rod 3 is driven to horizontally move leftwards, the linkage rod 3 drives a triangular connecting plate 15 to rotate on a support 10, a pull rod assembly 8 is driven to move upwards, a moving contact of a vacuum arc extinguish chamber 6 moves upwards until a moving contact and a moving contact are closed, and closing is completed. Meanwhile, a pressure spring 8-2 on the pull rod assembly 8 is compressed, and a brake-separating tension spring 4 is also pulled open to store energy for brake separation of the circuit breaker. When the brake is switched off, the power supply of the brake-off coil is switched on, the thimble of the brake-off coil impacts the crank arm of the brake-off opening half shaft of the spring operating mechanism 2 to rotate, the closing power is released, the energy of the tension spring 4 and the pressure spring 8-2 is released, the linkage rod 3 is driven to horizontally move rightwards, meanwhile, the connecting plate 15 rotates, the insulating pull rod 8-1 assembly 8 is driven to move downwards, the moving contact of the vacuum arc extinguish chamber 6 moves downwards, and the brake-off is completed.
When the insulating pull rod 8-1 assembly 8 moves up and down, the movement axis of the insulating pull rod 8-1 assembly 8 is always consistent with the axis of the arc extinguish chamber by means of positioning and guiding of the round hole on the top plate, and the performance of the circuit breaker is guaranteed. Meanwhile, the sliding groove in the connecting plate 15 can prevent the square shaft 9 from moving left and right, and the pull rod assembly 8 and the vacuum arc extinguish chamber 6 are ensured to keep the axes coincident.
The opening distance and the overtravel of the circuit breaker can be adjusted through the upper nut 11 and the lower nut 12, and the circuit breaker is very convenient.
Claims (4)
1. The utility model provides an outdoor vacuum circuit breaker of low-power consumption 10kV, includes box (1), three insulating tube (5) of group are installed at the top of box (1) roof, the upper portion of insulating tube (5) inner chamber is equipped with vacuum interrupter (6) respectively, still is provided with respectively in each insulating tube (5) and is used for driving pull rod assembly (8) of the moving contact action in vacuum interrupter (6), still be provided with in box (1) and be used for driving the drive arrangement that pull rod assembly (8) reciprocated, its characterized in that: the pull rod assembly (8) comprises an insulating pull rod (8-1), a guide rod (8-3) and a pressure spring (8-2), the upper end of the insulating pull rod (8-1) is used for controlling the moving contact, the lower end of the insulating pull rod (8-1) is matched with a guide hole in the upper end of the guide rod (8-3), and the lower end of the guide rod (8-3) is provided with a threaded rod; a pin shaft (8-4) which is vertical to the axis of the guide hole is fixedly arranged in the guide hole of the guide rod (8-3), and the pin shaft (8-4) is matched with a strip-shaped hole which is arranged at the lower end of the insulating pull rod (8-1); the pressure spring (8-2) is arranged between the insulating pull rod (8-1) and the guide rod (8-3);
three groups of connecting components which correspond to the pull rod components (8) one by one are arranged in the box body (1);
the connecting assembly comprises a support (10) fixed in the box body (1), a square shaft (9) and a connecting plate (15) rotatably connected with the support (10), a sliding groove is formed in the connecting plate (15), and a round shaft on the square shaft (9) is matched with the sliding groove to realize movement along the sliding groove and rotation relative to the connecting plate (15); the threaded rod at the lower end of the guide rod (8-3) penetrates through the through hole in the square shaft (9), the upper side and the lower side of the square shaft (9) are respectively provided with an upper nut (11) and a lower nut (12), and the upper nut (11) and the lower nut (12) are matched with the threaded rod to fix the square shaft (9) on the guide rod (8-3);
a linkage rod (3) connected with the driving device is further arranged in the box body (1), and the linkage rod (3) is further rotatably connected with connecting plates (15) in the three groups of connecting components respectively;
the box body (1) is also internally provided with a tension spring (4), one end of the tension spring (4) is connected with the linkage rod (3), and the other end of the tension spring is connected with a side plate of the box body (1).
2. The low power consumption 10kV outdoor vacuum circuit breaker of claim 1, characterized in that: two ends of the pin shaft (8-4) are positioned at the outer side of the outer circular surface of the guide rod (8-3), and three groups of holes (1-1) matched with the pull rod assembly (8) and the pin shaft (8-4) are formed in the top plate of the box body (1).
3. The low power consumption 10kV outdoor vacuum circuit breaker of claim 1, characterized in that: the driving device is a spring operating mechanism (2), and the spring operating mechanism (2) is connected with a mounting block (16) welded at the bottom of a top plate of the box body (1) through a bolt.
4. A low power consumption 10kV outdoor vacuum circuit breaker according to any of claims 1 to 3, characterized in that: the upper end of the insulating pull rod (8-1) is connected with the moving contact through a double-end screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212088.2A CN110767498B (en) | 2019-12-02 | 2019-12-02 | Low-power consumption 10kV outdoor vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212088.2A CN110767498B (en) | 2019-12-02 | 2019-12-02 | Low-power consumption 10kV outdoor vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN110767498A true CN110767498A (en) | 2020-02-07 |
| CN110767498B CN110767498B (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911212088.2A Active CN110767498B (en) | 2019-12-02 | 2019-12-02 | Low-power consumption 10kV outdoor vacuum circuit breaker |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2525668Y (en) * | 2001-07-25 | 2002-12-11 | 宁波日升电器制造有限公司 | Outdoor high voltage vacuum breaker |
| CN101916687A (en) * | 2010-08-05 | 2010-12-15 | 西安通大思源电器有限公司 | Driving mode control-based single-phase vacuum circuit breaker of double arc-extinguishing chamber |
| WO2017092655A1 (en) * | 2015-12-03 | 2017-06-08 | 国家电网公司 | Double-break vacuum breaker |
| CN210607100U (en) * | 2019-12-02 | 2020-05-22 | 烟台东方威思顿电力设备有限公司 | Low-power consumption 10kV outdoor vacuum circuit breaker |
-
2019
- 2019-12-02 CN CN201911212088.2A patent/CN110767498B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2525668Y (en) * | 2001-07-25 | 2002-12-11 | 宁波日升电器制造有限公司 | Outdoor high voltage vacuum breaker |
| CN101916687A (en) * | 2010-08-05 | 2010-12-15 | 西安通大思源电器有限公司 | Driving mode control-based single-phase vacuum circuit breaker of double arc-extinguishing chamber |
| WO2017092655A1 (en) * | 2015-12-03 | 2017-06-08 | 国家电网公司 | Double-break vacuum breaker |
| CN210607100U (en) * | 2019-12-02 | 2020-05-22 | 烟台东方威思顿电力设备有限公司 | Low-power consumption 10kV outdoor vacuum circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN110767498B (en) | 2024-07-26 |
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