CN208706522U - Handcart-type SF6 breaker structure is set in a kind of 12KV - Google Patents
Handcart-type SF6 breaker structure is set in a kind of 12KV Download PDFInfo
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- CN208706522U CN208706522U CN201821609815.XU CN201821609815U CN208706522U CN 208706522 U CN208706522 U CN 208706522U CN 201821609815 U CN201821609815 U CN 201821609815U CN 208706522 U CN208706522 U CN 208706522U
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- breaker
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- pole
- interlock plate
- chassis vehicle
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Abstract
The utility model discloses handcart-type SF6 breaker structure, including frame, pole, contact arm, operating mechanism, chassis vehicle, transmission mechanism and interlocking mechanism are set in a kind of 12KV；By simplifying, effective transmission mechanism, that is, ensure that breaker structure compact, in turn ensure the rotation of operating mechanism, be converted to pole moving contact and accurately move along a straight line, guarantee breaker closing and cut-off it is reliable；By pole dynamic/static contact CONTACT WITH FRICTION, main contact and arcing contact is mutually indepedent and unique internal structure of large scale dynamic/static contact spacing ensure that the breaker has the ability for cut-offfing big capacity current；Interlocking mechanism's flexibility and reliability meets five anti-requirements, ensure that the safe operation of breaker；Although the breaker compact, powerful, has the ability cut-off rated short circuit current 31.5KA He cut-off capacity current 800A；It is able to satisfy the resistance to pressure request of 3000 meters of High aititudes, and is applicable in the characteristic of -25 DEG C of low-temperature working environment.
Description
Technical field
The utility model relates to a kind of breaker structures, and in particular to a kind of to cut-off for the big capacity current of 12KV system
In set handcart-type SF6 breaker structure.
Background technique
Reactive compensation generally now is carried out using capacitor in a power distribution system, but vacuum circuit breaker is due to the limit of self structure
System not can avoid the shortcomings that generating cut-off overvoltage, damage to entire route and load in switching capacity current, right
The normal use and security implication of distribution system are very big.And SF6 breaker has safety and stability with its unique design feature
Cut-off the advantage of capacity current.The SF6 breaker of the present common 40.5KV in market, since volume and weight is too big, Wu Fayong
In 12KV switchgear；And the 12KV SF6 breaker of import is fixed breaker, structure and domestic demand difference are very big, and
The SF6 breaker of import can only meet IEC standard, and insulating capacity is unable to satisfy GB requirement.
12KV distribution system uses vacuum circuit breaker switched capacitor at present, since the structure of vacuum circuit breaker limits, nothing
Method avoids generating overvoltage, damages to distribution line and load.Therefore, it is necessary to research and develop a kind of for 12KV system great Rong
Property electric current sets handcart-type SF6 breaker in cut-offfing, to solve the above problems.
Summary of the invention
The utility model aim is: provide it is a kind of for the big capacity current of 12KV system cut-off in set handcart-type SF6
Breaker will not generate overvoltage, securely and reliably can cut-off higher capacity current.
The technical solution of the utility model is: set handcart-type SF6 breaker structure in a kind of 12KV, including frame, pole,
Contact arm, operating mechanism, chassis vehicle, transmission mechanism and interlocking mechanism, the transmission mechanism is by crank, kinematic link, connecting lever, phase
Between connecting rod form；The crank is fixed on the output shaft of operating mechanism, and connecting lever is fixedly connected on the rotation main shaft of intermediate pole
On；The crank and connecting lever are sequentially connected by kinematic link, and crank rotation drives connecting lever rotation, and then drive intermediate pole
Main axis is rotated, and rotation is become to the linear motion of pole moving contact, carries out switch closing and switch opening；The interphase connecting rod difference
It is connect by connecting lever and two connecting rods with the rotation spindle drive of three-phase pole, guarantees the synchronous operation of three-phase pole；The chassis
During vehicle shakes, under interlocking mechanism's effect, operating mechanism separating brake plate is always on, and breaker is constantly in gate-dividing state,
It can not carry out closing operation；When chassis vehicle is shaken testing position or operating position, the lead screw interlock plate of chassis vehicle is fallen after rise, is broken
Road device interlocking mechanism resets, and just allows to carry out closing operation.
Preferably, the interlocking mechanism by vertical interlock plate, right interlock plate, Left-wing Federation's jam plate, vertical connecting, set square,
Horizontal brace rod executes plate, Anchor plate kit composition；The lower end of the vertical interlock plate and the lead screw interlock plate of chassis vehicle, open circuit
When device is in gate-dividing state, the lead screw of chassis vehicle is shaken, lead screw interlock plate pops up simultaneously, and vertical interlock plate is driven to transport upwards
It is dynamic, while driving the right end of right interlock plate upward, left end rotates downwards counterclockwise, and the right end of Left-wing Federation's jam plate is downward, and left end is upward
It rotates clockwise, under acting on while right interlock plate, Left-wing Federation's jam plate, realizes the fortune in the same direction of vertical connecting and vertical interlock plate
It is dynamic, that is, it moves upwards, Anchor plate kit at this time is in free state, does not influence the movement of entire interlocking mechanism；Vertical connecting
It moves upwards, set square is pushed to rotate clockwise, and horizontal brace rod is driven to move right, promotion executes plate with fixation ends and is
Center rotates clockwise, and executes plate and operating mechanism separating brake plate is pushed to open again, realizes that breaker is in gate-dividing state.
Preferably, breaker can carry out breaker closing in test or operating position, and connecting lever is in combined floodgate shape at this time
State, connecting lever push down the upper surface of Anchor plate kit, and the lower part of Anchor plate kit is pressed in above right interlock plate, and vertical interlock plate can not at this time
It moving upwards, the lead screw interlock plate for being inconjunction with chassis vehicle can not pop up, so chassis vehicle lead screw can not shake, it is at this moment breaking
Device can not extract out or shake into, only by after breaker open operation could operating breaker extract out or shake into movement.
Preferably, three tie points of the rotation main shaft of the connecting lever and intermediate pole, kinematic link and interphase connecting rod are in
Triangle-Profile.
Preferably, the dielectric in the pole is SF6 gas.
The utility model has the advantages that:
1, handcart type breaker is set in this, is used for 12KV medium voltage network, which can match 800mm
Wide KYN28 switchgear, can be widely used in 12KV distribution system；
2, the operating mechanism of the breaker, transmission mechanism fluent motion are stablized, and ensure breaker reliably working；Interlocking is flexible
Reliably, meet five anti-requirements, guarantee the safe operation of breaker；Overvoltage will not be generated, can be safe and reliable cut-off is higher
Capacity current；
3, the breaker uses SF6 gas as insulation and arc-extinguishing medium, and pole has dynamic/static contact CONTACT WITH FRICTION, solely
Unique internal structure of vertical arcing contact arc extinguishing and large scale dynamic/static contact spacing, it is entirely avoided vacuum circuit breaker spring and excessively electric
The shortcomings that pressure, can securely and reliably cut-off big capacity current, protect distribution system, the safety of load and personnel；
Though 4, the breaker is compact-sized securely, excellent insulating property, it is closely connected, has both maintained small between each component
Volume, convenient for match cabinet；It in turn ensures that breaker flexible operation is reliable, makes one kind and be able to satisfy power grid and cut-off capacity current
It is required that qualified breaker apparatus.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and embodiments:
Fig. 1 be the utility model a kind of 12KV in set the structural schematic diagram one of handcart-type SF6 breaker structure；
Fig. 2 be the utility model a kind of 12KV in set the structural schematic diagram two of handcart-type SF6 breaker structure；
Fig. 3 be the utility model a kind of 12KV in set the structural schematic diagram three of handcart-type SF6 breaker structure；
Fig. 4 is transmission mechanism gate-dividing state structural schematic diagram in the breaker structure of the utility model；
Fig. 5 is transmission mechanism "on" position structural schematic diagram in the breaker structure of the utility model；
Fig. 6 is transmission mechanism gate-dividing state partial structural diagram in the breaker structure of the utility model；
Fig. 7 is transmission mechanism "on" position partial structural diagram in the breaker structure of the utility model.
Specific embodiment
Embodiment:
As shown in attached drawing 1-5, handcart-type SF6 breaker structure is set in a kind of 12KV of the utility model, including frame 1,
Three-phase pole 2, contact arm 3, operating mechanism 4, chassis vehicle 5, transmission mechanism and interlocking mechanism；
The frame 1, including pedestal 15, upper sealing plate, left plate, right side plate, panel；Pedestal 15 is welding assembly, small and exquisite
It is firm；The chassis vehicle 5, pole 2 and operating mechanism 4 are all fixed on this pedestal 15, not only easy for installation, are more convenient for controlling
Installation error processed guarantees breaker quality；15 shape of pedestal design is unique, and strict control is between pole 2 and operating mechanism 4
Space length, in turn ensure a live part have enough insulating spaces；The shape and assembly method of the pedestal simultaneously
Facilitate installation and maintenance, and convenient for lifting transport；
The pole 2, is subject to the major part of primary power source, is connect, is being operated with operating mechanism 4 by transmission mechanism
Under mechanism 4 controls, realizes the combined floodgate of primary power source route and cut-off；2 volume and weight of pole in the utility model may each be about
The 1/2 of the pole of 40.5KV system meets the requirement for 12KV power distribution cabinet；And the dielectric in pole 2 is SF6 gas
Body, when being moved by the inertia feature and moving contact of SF6 gas, the arc blow-out that pushes SF6 gas quickly to flow in arcing contact
Performance realizes pole 2 reliably insulation and arc quenching characteristic.
The contact arm 3 includes upper contact arm, lower contact arm, Mume flower contact, insulation sleeve；Contact arm is pole inlet wire pile crown and outlet
The extension of pile crown, the cooperation for breaker and switchgear end of incoming cables and leading-out terminal；
The kinetic energy output par, c that the operating mechanism 4 is breaker closing and is cut-off is driven defeated by two energy-stored springs
Shaft is rotated to both direction respectively, provides the energy of different directions for the switch closing and switch opening of pole；
The chassis vehicle 5 carries the chain of breaker and switch cabinet grounding switch, and breaker tests position in switchgear
Set the functions such as the operation between operating position.
The transmission mechanism is made of crank 6, kinematic link 7, connecting lever 8, interphase connecting rod 9；The crank 6 is fixed on operation
On the output shaft of mechanism 4, connecting lever 8 is fixedly connected on the rotation main shaft 16 of intermediate pole；The crank 6 passes through biography with connecting lever 8
Dynamic connecting rod 7 is sequentially connected, and the energy transmission that crank 6 rotates is given connecting lever 8, and the rotation main shaft 16 of intermediate pole is driven to rotate,
And rotation is become to the linear motion of pole moving contact, carry out switch closing and switch opening；The interphase connecting rod 9 passes through 8 He of connecting lever respectively
The rotation main shaft 16 of two connecting rods 20 and three-phase pole is sequentially connected, and guarantees the synchronous operation of three-phase pole.Transmission mechanism is open circuit
Think highly of the motion transmission component wanted, connecting lever 8 is simultaneously with kinematic link 7, and intermediate polar-column rotation main shaft 16, interphase connecting rod 9 connects, knot
Structure is exquisite, not only can guarantee the reliable and smooth of transmission mechanism movement, but also can save space shared by transmission mechanism.
The interlocking mechanism is by vertical interlock plate 10, right interlock plate 11, Left-wing Federation's jam plate 12, vertical connecting 13, set square
17, horizontal brace rod 18, execution plate 19, Anchor plate kit 14 form；The lower end of the vertical interlock plate 10 and the lead screw of chassis vehicle 5
Interlock plate when breaker is in gate-dividing state, shakes the lead screw of chassis vehicle 5, and lead screw interlock plate pops up simultaneously, drives vertical
Interlock plate 10 moves upwards, while driving the right end of right interlock plate 11 upward, and left end rotates downwards counterclockwise, Left-wing Federation's jam plate 12
Right end is downward, and left end rotates clockwise upwards, under acting on while right interlock plate 11, Left-wing Federation's jam plate 12, realizes vertical connection
The movement in the same direction of bar 13 and vertical interlock plate 10, that is, move upwards, and Anchor plate kit 14 at this time is in free state, does not influence whole
The movement of a interlocking mechanism；Vertical connecting 13 moves upwards, and set square 17 is pushed to rotate clockwise, and drives horizontal brace rod
18 move right, and execution plate 19 is pushed to rotate clockwise centered on fixation ends, execute plate 19 and push 4 separating brake of operating mechanism again
Plate is opened, and realizes that breaker is in gate-dividing state；
During the chassis vehicle 5 shakes, under interlocking mechanism's effect, 4 separating brake plate of operating mechanism is always on, breaker
It is constantly in gate-dividing state, closing operation can not be carried out；When chassis vehicle 5 is shaken testing position or operating position, chassis vehicle 5
Lead screw interlock plate fall after rise, breaker interlocking mechanism reset, just allow carry out closing operation.Chassis vehicle is only shaken into test position
It sets or when operating position, the lead screw interlock plate of chassis vehicle is fallen after rise, and breaker interlocking mechanism resets, just allow to carry out closing operation.
Breaker interlocking mechanism realizes the five anti-requirements for forbidding non-test/off-position to close a floodgate.
Breaker can carry out breaker closing in test or operating position, and connecting lever 8 is in "on" position at this time, turn
Arm 8 pushes down the upper surface of Anchor plate kit 14, and the lower part of Anchor plate kit 14 is pressed in above right interlock plate 11, at this time vertical interlock plate 10
It can not move upwards, the lead screw interlock plate for being inconjunction with chassis vehicle can not pop up, so chassis vehicle lead screw can not shake, at this moment
Breaker can not extract out or shake into, only by after breaker open operation could operating breaker extract out or shake into movement.Breaker connection
Latch mechanism, which realizes, prevents electrification extraction breaker, and prevents the five anti-requirements for accidentally dividing breaker.
Three tie points for rotating main shaft 16, kinematic link 7 and interphase connecting rod 9 of the connecting lever 8 and intermediate pole are in three
Angular distribution；The connecting lever 8 with the position of 7 tie point of kinematic link is obtained by following calculation above: such as 6 institute of attached drawing
Show, when crank 6, connecting lever 8 and polar-column rotation main shaft are all in open position, using kinematic link 7 and 6 fixed point of crank as the center of circle,
It is that radius does a round A, the connection point of gate-dividing state underdrive connecting rod 7 and connecting lever 8 with 7 both ends fixation hole distance of kinematic link
It sets just on circle A；As shown in Fig. 7, when crank 6 is under the drive of operating mechanism 4,120 ° of arrival closing positions are rotated, and at this time
Kinematic link 7 and 6 fixed point of crank have arrived new position, then using this fixed point as the center of circle, with 7 both ends fixation hole of kinematic link away from
As soon as doing a circle B from for radius, the tie point position of "on" position underdrive connecting rod 7 and connecting lever 8 is on justifying B；2 moving contact of pole
Movement travel is 80mm, and the rotational angle for turning to be counted as polar-column rotation main shaft is 57.7525 °, and connecting lever 8 is solid with polar-column rotation main shaft
It is scheduled on together, connecting lever 8 is also 57.7525 ° of rotation from open position to closing position, does two angles from 8 rotation center of connecting lever
It for 57.7525 ° of line, respectively falls on two above-mentioned circles, when adjustment two lines and two round intersection points to 8 rotational circle of connecting lever
When being equidistant of the heart, so that it may obtain the position of connecting lever 8 Yu 7 connecting hole of kinematic link.Pass through above-mentioned tight calculating, Ke Yibao
The rotation of card operating mechanism output shaft is transformed into the linear motion of pole moving contact after through a series of rotary motion
Dimensional accuracy meets the required distance of switch closing and switch opening.
Handcart-type SF6 breaker structure is set in this, is used for the big capacity current of 12KV system and is cut-off, its working principle is that:
800mm wide 12KV switchgear can be matched, close/control and protection of separating brake to load in distribution loop；Breaker passes through chassis
Vehicle 5 is fixed on the breaker chamber of switchgear, and realizes breaker testing position and operating position in switchgear by chassis vehicle 5
Between movement；When breaker reaches operating position, breaker is connected the end of incoming cables of switchgear and leading-out terminal by contact arm 3
It picks up and；After 4 energy storage of operating mechanism, by transmission mechanism, pole 2 is driven to close a floodgate, cut-off, the connection of control load and power supply,
It disconnects；The good arc extinguishing of pole 2 and break performance, guarantee avoid the occurrence of overvoltage, the safety of protection circuit and load equipment.?
In breaker operational process, interlocking mechanism guarantee breaker shake into, shake out during, separating brake is remained, after breaker closing
Forbid breaker shake into, shake out, protect equipment and operator safety.The breaker structure is compact securely, tight between each component
Close connection had both maintained small and exquisite volume, convenient for matching cabinet；It in turn ensures that breaker flexible operation is reliable, makes a kind of energy
Meet the qualified breaker apparatus that power grid cut-offs capacity current requirement.
The above embodiments are only illustrative of the principle and efficacy of the utility model, rather than limits the present invention
's.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed of the utility model
All equivalent modifications or change completed under spirit and technical idea, should be covered by the claim of the utility model.
Claims (5)
1. setting handcart-type SF6 breaker structure in a kind of 12KV, including frame (1), pole (2), contact arm (3), operating mechanism
(4), chassis vehicle (5), transmission mechanism and interlocking mechanism, it is characterised in that: the transmission mechanism is by crank (6), kinematic link
(7), connecting lever (8), interphase connecting rod (9) composition；The crank (6) is fixed on the output shaft of operating mechanism (4), and connecting lever (8) is solid
Surely it is connected between on the rotation main shaft (16) of pole；The crank (6) and connecting lever (8) are sequentially connected by kinematic link (7),
Crank (6) rotation drives connecting lever (8) rotation, and then drives rotation main shaft (16) rotation of intermediate pole, and rotation is become pole
The linear motion of column moving contact carries out switch closing and switch opening；The interphase connecting rod (9) passes through connecting lever (8) and two connecting rods respectively
(20) it is sequentially connected with the rotation main shaft (16) of three-phase pole, guarantees the synchronous operation of three-phase pole；The chassis vehicle (5) was shaken
Cheng Zhong, under interlocking mechanism's effect, operating mechanism (4) separating brake plate is always on, and breaker is constantly in gate-dividing state, Wu Fajin
Row closing operation；When chassis vehicle (5) is shaken testing position or operating position, the lead screw interlock plate of chassis vehicle (5) is fallen after rise, is broken
Road device interlocking mechanism resets, and just allows to carry out closing operation.
2. setting handcart-type SF6 breaker structure in a kind of 12KV according to claim 1, it is characterised in that: the interlocking
Mechanism is by vertical interlock plate (10), right interlock plate (11), Left-wing Federation's jam plate (12), vertical connecting (13), set square (17), level
Connecting rod (18) executes plate (19), Anchor plate kit (14) composition；The lower end of the vertical interlock plate (10) and chassis vehicle (5)
Lead screw interlock plate when breaker is in gate-dividing state, shakes the lead screw of chassis vehicle (5), and lead screw interlock plate pops up simultaneously, band
It moves vertical interlock plate (10) to move upwards, while driving the right end of right interlock plate (11) upward, left end rotates downwards counterclockwise, left
The right end of interlock plate (12) is downward, and left end rotates clockwise upwards, acts on while right interlock plate (11), Left-wing Federation's jam plate (12)
Under, it realizes the movement in the same direction of vertical connecting (13) and vertical interlock plate (10), that is, moves upwards, Anchor plate kit (14) at this time
In free state, the movement of entire interlocking mechanism is not influenced；Vertical connecting (13) moves upwards, and pushes set square (17) suitable
Hour hands rotation, and horizontal brace rod (18) is driven to move right, push execution plate (19) to turn clockwise centered on fixation ends
It is dynamic, it executes plate (19) and pushes operating mechanism (4) separating brake plate to open again, realize that breaker is in gate-dividing state.
3. setting handcart-type SF6 breaker structure in a kind of 12KV according to claim 2, it is characterised in that: breaker exists
When test or operating position, breaker closing can be carried out, connecting lever (8) is in "on" position at this time, and connecting lever (8) pushes down pressing plate group
The upper surface of part (14), the lower part of Anchor plate kit (14) are pressed in right interlock plate (11) above, and vertical interlock plate (10) can not at this time
It moving upwards, the lead screw interlock plate for being inconjunction with chassis vehicle can not pop up, so chassis vehicle lead screw can not shake, it is at this moment breaking
Device can not extract out or shake into, only by after breaker open operation could operating breaker extract out or shake into movement.
4. setting handcart-type SF6 breaker structure in a kind of 12KV according to claim 1, it is characterised in that: the connecting lever
(8) with three tie point distributions triangular in shape of the rotation main shaft (16), kinematic link (7) and interphase connecting rod (9) of intermediate pole.
5. setting handcart-type SF6 breaker structure in a kind of 12KV according to any one of claims 1 to 4, it is characterised in that:
Dielectric in the pole (2) is SF6 gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609815.XU CN208706522U (en) | 2018-09-30 | 2018-09-30 | Handcart-type SF6 breaker structure is set in a kind of 12KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609815.XU CN208706522U (en) | 2018-09-30 | 2018-09-30 | Handcart-type SF6 breaker structure is set in a kind of 12KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208706522U true CN208706522U (en) | 2019-04-05 |
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ID=65947946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821609815.XU Active CN208706522U (en) | 2018-09-30 | 2018-09-30 | Handcart-type SF6 breaker structure is set in a kind of 12KV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208706522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354596A (en) * | 2020-04-10 | 2020-06-30 | 厦门兴厦控电气有限公司 | A vacuum circuit breaker with dual power switch |
| CN118380283A (en) * | 2024-06-25 | 2024-07-23 | 亨斯迈(杭州)电力技术有限公司 | Electromagnetic mechanical interlocking device for dual power supply control |
-
2018
- 2018-09-30 CN CN201821609815.XU patent/CN208706522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354596A (en) * | 2020-04-10 | 2020-06-30 | 厦门兴厦控电气有限公司 | A vacuum circuit breaker with dual power switch |
| CN118380283A (en) * | 2024-06-25 | 2024-07-23 | 亨斯迈(杭州)电力技术有限公司 | Electromagnetic mechanical interlocking device for dual power supply control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230824 Address after: No. 22 Torch North Road, Torch Park, Torch High tech Zone, Xiamen City, Fujian Province, 361115 Patentee after: SCHNEIDER ELECTRIC (XIAMEN) SWITCH EQUIPMENT CO.,LTD. Address before: No. 285 Jinfeng Road, High tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee before: SCHNEIDER SWITCH (SUZHOU) Co.,Ltd. |
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| TR01 | Transfer of patent right |