CN111354596B - A vacuum circuit breaker with dual power switches - Google Patents
A vacuum circuit breaker with dual power switches Download PDFInfo
- Publication number
- CN111354596B CN111354596B CN202010278173.5A CN202010278173A CN111354596B CN 111354596 B CN111354596 B CN 111354596B CN 202010278173 A CN202010278173 A CN 202010278173A CN 111354596 B CN111354596 B CN 111354596B
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- China
- Prior art keywords
- circuit breaker
- operating mechanism
- interlocking
- loop
- main shaft
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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
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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
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
-
- 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
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
本发明公开一种双电源开关的真空断路器，包括断路器壳体，断路器壳体一侧设有至少一相固封极柱，每相固封极柱包括第一回路和第二回路，第一回路和第二回路共用一出线引出，第一回路和第二回路分别由第一操作机构和第二操作机构控制通断，第一操作机构和第二操作机构设置在断路器壳体内，第一操作机构和第二操作机构之间设有机械联锁装置。本发明通过两进一出的电缆连线实现双电源稳定供电方案，断路器内的两操作机构机械联锁，提高电气连接安全可靠性能。
The present invention discloses a vacuum circuit breaker with dual power switch, including a circuit breaker housing, at least one phase of solid-sealed pole is provided on one side of the circuit breaker housing, each phase of the solid-sealed pole includes a first circuit and a second circuit, the first circuit and the second circuit share an outlet lead, the first circuit and the second circuit are respectively controlled to be on and off by a first operating mechanism and a second operating mechanism, the first operating mechanism and the second operating mechanism are arranged in the circuit breaker housing, and a mechanical interlocking device is arranged between the first operating mechanism and the second operating mechanism. The present invention realizes a dual power supply stable power supply scheme through a two-input and one-output cable connection, and the two operating mechanisms in the circuit breaker are mechanically interlocked to improve the safety and reliability of electrical connection.
Description
Technical Field
The invention discloses a vacuum circuit breaker with double power switches, which belongs to the technical field of circuit breaker manufacture according to the International Patent Classification (IPC).
Background
In some important occasions, the stability of power supply needs to be guaranteed, such as communication equipment, computer data centers, hospitals, airports and the like, the power supply system is often provided with two loops of power supply incoming lines, one set of power supply incoming lines is mainly used, the other set of power supply incoming lines are standby, and once the main power supply incoming lines are failed or overhauled, the standby power supply incoming lines can immediately supply power so as to meet the requirement of continuous power utilization. The traditional two-loop power supply inlet wire often introduces power through two switch cabinets with circuit breakers, and the two switch cabinets realize lead safety through electric interlocking, and if the electric interlocking fails, power grid faults are caused.
Chinese literature CN204243584U discloses a switch cabinet for automatic switching of medium voltage dual power supply, which comprises a breaker chamber, two cable chambers, a bus chamber and two low voltage chambers, wherein the two cable chambers are respectively connected with a mains supply and a generator power supply, the breaker chamber is provided with a first breaker connected with the mains supply and a second breaker connected with the generator power supply, and two incoming line switch cabinets respectively provided with the first breaker or the second breaker in the prior art are combined into one. In the document, the first circuit breaker and the second circuit breaker respectively comprise a three-phase incoming line and a three-phase outgoing line, and the two circuit breakers are arranged side by side left and right, so that the structure is complex.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a vacuum circuit breaker with double power switches.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The utility model provides a vacuum circuit breaker of dual power switch, including the circuit breaker casing, circuit breaker casing one side is equipped with at least one looks solid utmost point post that seals mutually, and every looks solid utmost point post that seals includes first return circuit and second return circuit, and first return circuit and second return circuit share one and be qualified for the next round of competitions and draw forth, and first return circuit and second return circuit are respectively by first operating device and second operating device control break-make, and first operating device and second operating device set up in the circuit breaker casing, are equipped with mechanical interlock between first operating device and the second operating device.
Further, one side of the circuit breaker shell is provided with three-phase solid-sealed polar poles, each phase of solid-sealed polar pole comprises an upper incoming line, a lower incoming line and a middle outgoing line, the upper incoming line and the middle outgoing line form a first loop, and the lower incoming line and the middle outgoing line form a second loop. The upper inlet wire and the lower inlet wire are respectively provided with a vacuum arc-extinguishing chamber which is horizontally arranged, the vacuum arc-extinguishing chamber is provided with a moving contact and a static contact, and the moving contact is connected with a first operating mechanism or a second operating mechanism to realize the connection or disconnection of the first loop or the second loop.
Further, the first operating mechanism is arranged at the inner upper part of the breaker shell, the second operating mechanism is arranged at the inner lower part of the breaker shell, the first operating mechanism and the second operating mechanism comprise a switching-on and switching-off unit, a main shaft and a multi-connecting-rod mechanism, the switching-on and switching-off unit is connected with the main shaft and drives the main shaft to rotate, one end of the multi-connecting-rod mechanism is sleeved on the main shaft, the other end of the multi-connecting-rod mechanism is hinged on the breaker shell, and the multi-connecting-rod mechanism is connected with an insulating pull rod in a solid sealing pole to control the brake and the connection or disconnection of a static contact.
Further, the first connecting rod, the second connecting rod and the third connecting rod of the multi-connecting rod mechanism are connected end to end in sequence, the first connecting rod is sleeved on the main shaft, the tail end of the third connecting rod is connected with the hinging seat corresponding to the circuit breaker shell, the third connecting rod is connected with the insulating pull rod, and the main shaft rotates to drive the insulating pull rod to displace in the horizontal direction through the multi-connecting rod mechanism so as to realize circuit on-off.
Further, the insulation pull rod is connected with the third connecting rod through the adjustable supporting pin, so that the connecting rod is converted into the insulation pull rod to horizontally shift.
Further, the mechanical interlocking device comprises an interlocking plate and an interlocking shaft, wherein the interlocking plate is vertically arranged, one end of the interlocking plate is connected with a main shaft of the first operating mechanism or the second operating mechanism, the other end of the interlocking plate is connected with the interlocking shaft, the interlocking shaft is arranged in parallel with the main shaft, the interlocking shaft is rotationally connected to the circuit breaker shell, a contact arm is convexly arranged on the interlocking shaft, and the contact arm acts with a closing button of a corresponding opening and closing unit to prevent the two operating mechanisms from closing simultaneously.
Further, a chassis is arranged below the breaker shell, and a handcart interlocking device is arranged between the chassis and the first and second operating mechanisms. The handcart interlocking device comprises a clamping plate and a handcart interlocking device, wherein the clamping plate is arranged on a circuit breaker shell and can move up and down, two convex columns are transversely arranged on the clamping plate and are respectively matched with output crank arms on a first operating mechanism main shaft and a second operating mechanism main shaft, the bottom end of the clamping plate is connected with the handcart interlocking device, the main shaft rotates to press the convex columns through the output crank arms to enable the clamping plate to move downwards so as to enable the handcart interlocking device to prevent the handcart from moving, and after the main shaft resets, the handcart interlocking device is used for unlocking and driving the clamping plate to reset.
Further, a main shaft of the first operating mechanism or the second operating mechanism is connected with a brake separating spring, the brake separating spring is fixed on the circuit breaker shell through a hanging plate, the main shaft is connected with a brake separating limit for an oil buffer through a crank arm to avoid brake separating rebound, the crank arm is connected with an auxiliary switch through a connecting plate, and the brake closing and separating main shaft is rotated to switch the switch to realize electric locking and judgment of a protection position.
The invention relates to a vacuum circuit breaker with double power switches, which is suitable for medium-voltage automatic rotation switching equipment, realizes a double power stable power supply scheme through a two-in and one-out cable connection, the two operating mechanisms in the circuit breaker are mechanically interlocked, so that the safety and reliability of electrical connection are improved, and the circuit breaker has the advantages of compact structure, reasonable layout and the like.
Drawings
FIG. 1 is a schematic representation of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a schematic diagram of the interior of an embodiment of the present invention.
FIG. 5 is a schematic view of the inside of the right side plate with the panel removed according to the embodiment of the invention.
Fig. 6 is an internal elevation view of an embodiment of the present invention.
Fig. 7 is a cross-sectional view of fig. 6.
Fig. 8 is a schematic diagram of the cooperation of the embodiment of the present invention and the opening and closing unit.
Fig. 9 is a cross-sectional view of fig. 8.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
Referring to fig. 1 to 9, a vacuum circuit breaker with dual power switches includes a circuit breaker housing 1, at least one phase of solid-sealed pole is disposed on one side of the circuit breaker housing 1, the circuit breaker of the present embodiment is configured A, B, C with three-phase solid-sealed poles, each phase of solid-sealed pole includes a first circuit and a second circuit, the first circuit and the second circuit share a line to be led out, the first circuit and the second circuit are respectively controlled to be turned on and off by a first operating mechanism 2 and a second operating mechanism 3, the first operating mechanism 2 and the second operating mechanism 3 are disposed in the circuit breaker housing 1, a mechanical interlocking device is disposed between the first operating mechanism 2 and the second operating mechanism 3, a panel 11 is disposed on the front surface of the circuit breaker housing 1, and a switch button for controlling the first operating mechanism and the second operating mechanism is disposed on the panel 11. Each phase of solid-sealed pole of the circuit breaker comprises an upper incoming line 61, a lower incoming line 62 and an intermediate outgoing line 63, wherein the upper incoming line 61 and the intermediate outgoing line 63 form a first loop, and the lower incoming line 62 and the intermediate outgoing line 63 form a second loop. The upper inlet wire 61 and the lower inlet wire 62 are respectively provided with a vacuum arc-extinguishing chamber which is horizontally arranged, and the vacuum arc-extinguishing chamber is provided with a moving contact and a static contact, wherein the moving contact is connected with the first operating mechanism 2 or the second operating mechanism 3 to realize the connection or disconnection of the first loop or the second loop.
Referring to fig. 1,4, 5 and 8, in the circuit breaker of the present invention, a first operating mechanism 2 is disposed at an upper portion in a circuit breaker housing 1, a second operating mechanism 3 is disposed at a lower portion in the circuit breaker housing 1, a partition plate is disposed in the circuit breaker housing to form an up-down installation space, the first operating mechanism 2 and the second operating mechanism 3 each include a switch-on/off unit 41, a main shaft 42, and a multiple link mechanism 43, wherein the switch-on/off unit 41 is connected to the main shaft 42 and drives the main shaft to rotate, one end of the multiple link mechanism 43 is sleeved on the main shaft 42, the other end of the multiple link mechanism 43 is hinged on the circuit breaker housing 1, and the multiple link mechanism 43 is connected to an insulation pull rod 5 in a fixed pole to control the connection or disconnection of a stationary contact. As shown in fig. 7, in the multi-link mechanism 43, a first link, a second link 432 and a third link 433 are sequentially connected from head to tail, the first link 431, the second link 432 and the third link 433 are sleeved on the main shaft 42, the tail end of the third link 433 is connected with a hinge seat corresponding to the breaker housing 1, the third link 433 is connected with the insulating pull rod 5, and the main shaft 42 rotates to drive the insulating pull rod 5 to displace in the horizontal direction through the multi-link mechanism 4 so as to realize loop on-off. As shown in fig. 5, the insulation pull rod 5 is connected with the third connecting rod 433 through the adjustable supporting pin 434 to realize the conversion of the connecting rod rotation into the insulation pull rod horizontal displacement.
Referring to fig. 4-6, the mechanical interlocking device of the present invention includes an interlocking plate 71 and an interlocking shaft 72, wherein the interlocking plate 71 is vertically disposed, one end of the interlocking plate 71 is connected with the main shaft 42 of the first operating mechanism 2 or the second operating mechanism 3, the other end of the interlocking plate 71 is connected with the interlocking shaft 72, the interlocking shaft 72 is parallel to the main shaft 42, the interlocking shaft 72 is rotatably connected to the circuit breaker housing 1, a contact arm 721 is protruding on the interlocking shaft 72, and the contact arm 721 acts with a closing button of a corresponding opening/closing unit to prevent the two operating mechanisms from closing simultaneously. The interlocking plate that the main shaft of first operating device connects sets up in circuit breaker casing intermediate position, and the interlocking plate that the main shaft of second operating device connects sets up in circuit breaker casing 1's right side, is close to the right side board, and right side interlocking plate upwards extends to the lock shaft that reaches to the top from the bottom, and the interlocking plate of first operating device sets up in parallel with the interlocking plate of second operating device, and the protruding closing swing arm 111 cooperation that contacts arm 721 and closing button that links to each other of interlocking shaft is spacing. And similarly, after the second operating mechanism is switched on, the switching-on button of the first operating mechanism fails.
Referring to fig. 3, 4 and 6, a chassis (not shown) is disposed under the breaker housing 1 of the breaker of the present invention, and a cart interlocking device is disposed between the chassis and the first and second operating mechanisms. The handcart interlocking device comprises a clamping plate 81 and a handcart interlocking 82, wherein the clamping plate 81 is arranged on the circuit breaker shell 1 and can move up and down, the clamping plate 81 is transversely provided with two convex columns 811 and 812 which are respectively matched with output crank arms 421 and 422 on the main shafts of the first operating mechanism and the second operating mechanism, the bottom end of the clamping plate 81 is connected with the handcart interlocking 82, the main shaft 42 rotates to press the convex columns through the output crank arms to enable the clamping plate 81 to move down so as to enable the handcart interlocking 82 to act for preventing the handcart from moving, and after the main shaft resets, the handcart interlocking is unlocked and simultaneously drives the clamping plate to reset, and rollers are arranged on the handcart interlocking 82 to be matched and connected with the clamping plate 81. When the chassis is in a working or test position, the first operating mechanism and the second operating mechanism in the circuit breaker can be switched on, and when the first operating mechanism or the second operating mechanism is switched on, the chassis cannot move, so that the possibility of circuit connection is ensured.
Referring to fig. 5, in the circuit breaker of the present invention, a main shaft 42 of a first operating mechanism 2 or a second operating mechanism 3 is connected with a brake release spring 91, the brake release spring 91 is fixed on a circuit breaker housing 1 through a hanging plate, the main shaft 42 is connected with an oil buffer 92 through a crank arm to limit brake release to avoid brake release rebound, the crank arm is connected with an auxiliary switch 94 through a connecting plate 93, and the function is that 1, judgment of electric locking and protection positions is realized by using a switch-on brake release main shaft to rotate to switch the switch, such as that the switch cannot be closed any more in a switch-on position, and the brake release position cannot be opened, 2, a position indicator is used, such as that the switch-on lamp is on in the switch-on position, the brake release lamp is on in the switch-off position, and 3, some safety requirements such as that a cabinet door is opened, and the switch cannot be closed electrically.
Fig. 8 and 9 show assembly and matching diagrams of an embodiment of the invention and an opening and closing unit, wherein the opening and closing unit is an opening and closing actuating mechanism of a vacuum circuit breaker, and is positioned in a circuit breaker shell at the rear side of a panel button, and a main shaft, a link mechanism and an insulating pull rod are driven to realize energy storage closing and opening through the mechanism.
The above description is illustrative of the embodiments using the present teachings, and is not intended to limit the scope of the present teachings to any particular modification or variation of the present teachings by those skilled in the art.
Claims (7)
1. The vacuum circuit breaker of the double power switch is characterized by comprising a circuit breaker shell, wherein one side of the circuit breaker shell is provided with at least one phase of solid sealing pole, each phase of solid sealing pole comprises a first loop and a second loop, the first loop and the second loop share an outgoing line for leading out, the first loop and the second loop are respectively controlled to be on-off by a first operating mechanism and a second operating mechanism, the first operating mechanism and the second operating mechanism are arranged in the circuit breaker shell, and a mechanical interlocking device is arranged between the first operating mechanism and the second operating mechanism;
The first operating mechanism is arranged at the upper part in the circuit breaker shell, the second operating mechanism is arranged at the lower part in the circuit breaker shell, the first operating mechanism and the second operating mechanism both comprise a switching-on/off unit, a main shaft and a multi-link mechanism, the switching-on/off unit is connected with the main shaft and drives the main shaft to rotate, the multi-link mechanism is correspondingly matched with the solid-sealed polar pole, one end of the multi-link mechanism is sleeved on the main shaft, the other end of the multi-link mechanism is hinged on the circuit breaker shell, and the multi-link mechanism is connected with an insulating pull rod in the corresponding solid-sealed polar pole to control the on-off of the first loop or the second loop;
The first connecting rod, the second connecting rod and the third connecting rod of the multi-connecting rod mechanism are connected end to end in sequence, the first connecting rod is sleeved on the main shaft, the tail end of the third connecting rod is connected with a hinging seat corresponding to the circuit breaker shell, the third connecting rod is connected with the insulating pull rod, and the main shaft rotates to drive the insulating pull rod to displace in the horizontal direction through the multi-connecting rod mechanism so as to realize circuit on-off;
The insulation pull rod is connected with the third connecting rod through an adjustable supporting pin, so that the connecting rod is converted into the insulation pull rod to horizontally shift.
2. A vacuum circuit breaker with double power switches as in claim 1 wherein one side of the circuit breaker housing is provided with three-phase solid-sealed poles, each phase solid-sealed pole comprises an upper incoming line, a lower incoming line and an intermediate outgoing line, the upper incoming line and the intermediate outgoing line form a first loop, and the lower incoming line and the intermediate outgoing line form a second loop.
3. The vacuum circuit breaker with the dual power switch as set forth in claim 2, wherein the upper incoming line and the lower incoming line are respectively provided with a vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber is horizontally arranged, the vacuum arc-extinguishing chamber is provided with a moving contact and a fixed contact, wherein the moving contact is connected with the first operating mechanism or the second operating mechanism through an insulating pull rod to realize the connection or disconnection of the first loop or the second loop.
4. The vacuum circuit breaker with double power switches as set forth in claim 1, wherein the mechanical interlocking device comprises an interlocking plate and an interlocking shaft, the interlocking plate is arranged vertically, one end of the interlocking plate is connected with a main shaft of the first operating mechanism or the second operating mechanism, the other end of the interlocking plate is connected with the interlocking shaft, the interlocking shaft is arranged in parallel with the main shaft, the interlocking shaft is connected on the circuit breaker shell in a rotating way, and a contact arm is arranged on the interlocking shaft in a protruding way and acts with a closing button of the corresponding opening and closing unit to prevent the two operating mechanisms from closing simultaneously.
5. A dual-power-switch vacuum circuit breaker as claimed in claim 1 or 4 wherein a chassis is provided under the circuit breaker housing, and a trolley interlock is provided between the chassis and the first and second operating mechanisms.
6. The vacuum circuit breaker with the dual power switch as set forth in claim 5, wherein the handcart interlocking device comprises a clamping plate and a handcart interlocking device, the clamping plate is arranged on the circuit breaker shell and can move up and down, the clamping plate is transversely provided with two convex columns which are respectively matched with output crank arms on the main shafts of the first operating mechanism and the second operating mechanism, and the bottom end of the clamping plate is connected with the handcart interlocking device.
7. The vacuum circuit breaker with double power switches as claimed in claim 1,2, 3, 4 or 6, wherein the main shaft of the first operating mechanism or the second operating mechanism is connected with the opening limit of the oil buffer through a crank arm to avoid the rebound of the opening, the crank arm is connected with the auxiliary switch through a connecting plate, and the switch is switched by the rotation of the closing opening main shaft to realize the judgment of the electric locking and the protection position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010278173.5A CN111354596B (en) | 2020-04-10 | 2020-04-10 | A vacuum circuit breaker with dual power switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010278173.5A CN111354596B (en) | 2020-04-10 | 2020-04-10 | A vacuum circuit breaker with dual power switches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111354596A CN111354596A (en) | 2020-06-30 |
| CN111354596B true CN111354596B (en) | 2025-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010278173.5A Active CN111354596B (en) | 2020-04-10 | 2020-04-10 | A vacuum circuit breaker with dual power switches |
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| CN (1) | CN111354596B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786265B (en) * | 2020-07-27 | 2024-12-03 | 亨斯迈(杭州)电力技术有限公司 | Dual power switch cabinet |
| CN111785566B (en) * | 2020-07-27 | 2025-03-14 | 亨斯迈(杭州)电力技术有限公司 | Dual power vacuum circuit breaker |
| CN113589155B (en) * | 2021-06-16 | 2024-09-03 | 国网宁夏电力有限公司中卫供电公司 | A test device and method for high voltage circuit breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204243584U (en) * | 2014-12-01 | 2015-04-01 | 施耐德电气华电开关(厦门)有限公司 | A switchgear for automatic switching of medium-voltage dual power supplies |
| CN211605024U (en) * | 2020-04-10 | 2020-09-29 | 厦门兴厦控电气有限公司 | Vacuum circuit breaker of dual-power switch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204243583U (en) * | 2014-12-01 | 2015-04-01 | 施耐德电气华电开关(厦门)有限公司 | A vacuum circuit breaker handcart for medium voltage dual power supply switching |
| CN106684747A (en) * | 2016-08-13 | 2017-05-17 | 信尔德科技有限公司 | High-voltage switch cabinet |
| CN106356208B (en) * | 2016-11-25 | 2018-03-16 | 贵州泰永长征技术股份有限公司 | Dual-power transfer switch electrical equipment is pressed in a kind of permanent magnetism |
| CN208706522U (en) * | 2018-09-30 | 2019-04-05 | 施耐德开关（苏州）有限公司 | Handcart-type SF6 breaker structure is set in a kind of 12KV |
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2020
- 2020-04-10 CN CN202010278173.5A patent/CN111354596B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204243584U (en) * | 2014-12-01 | 2015-04-01 | 施耐德电气华电开关(厦门)有限公司 | A switchgear for automatic switching of medium-voltage dual power supplies |
| CN211605024U (en) * | 2020-04-10 | 2020-09-29 | 厦门兴厦控电气有限公司 | Vacuum circuit breaker of dual-power switch |
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| CN111354596A (en) | 2020-06-30 |
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