CN210607087U - Combined high-voltage vacuum circuit breaker - Google Patents
Combined high-voltage vacuum circuit breaker Download PDFInfo
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- CN210607087U CN210607087U CN201921790821.4U CN201921790821U CN210607087U CN 210607087 U CN210607087 U CN 210607087U CN 201921790821 U CN201921790821 U CN 201921790821U CN 210607087 U CN210607087 U CN 210607087U
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- 238000002955 isolation Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 26
- 239000012212 insulator Substances 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a combined high-voltage vacuum circuit breaker, which comprises a bottom frame, wherein a three-phase wiring board and a conductive seat are respectively arranged on two sides of the bottom frame in an insulated manner; an isolation contact knife, a wall-penetrating pole and a vacuum arc-extinguishing chamber are sequentially arranged between each phase of wiring board and the conductive seat; the isolation contact knife comprises a plurality of knife boards, wherein a compression bolt and a contact spring extend out of the outer side of at least one knife board; the end part of the vacuum arc extinguish chamber is provided with a linkage assembly, the linkage assembly in the middle is coated with an insulating cover, and the insulating cover extends to two sides of the linkage assembly and is separated among the three-phase linkage assembly; the chassis is also fixedly provided with three current transformers which are circular rings and sleeved on the current transformers. Has the advantages of compact structure, small volume, safety and reliability.
Description
Technical Field
The utility model relates to a power equipment field, concretely relates to vacuum circuit breaker.
Background
Wind power is converted into alternating current (with the voltage of 690V) by a wind power generator through a rotating blade and a generator, and then the alternating current is sent to a power system through a step-up transformer and 35KV switch equipment in a 35KV box transformer, generally, according to the principle that one machine is changed, each fan is matched with one 35KV box transformer, and each box transformer needs to be provided with one 35KV switch equipment. The switch device can be a vacuum load isolating switch-fuse combined electrical appliance with a load isolating switch and a fuse integrated together, and can also be a high-voltage alternating-current combined type vacuum circuit breaker.
Chinese patent CN201310306091 discloses a vacuum load switch and fuse combined electrical apparatus, which is characterized in that a wall-through insulated conductor passes through a metal grounding underframe to form an electrical connection, so that the formed fixed cabinet is divided into two functional compartments, and a vacuum arc-extinguishing chamber for switching on and off load current is arranged on a static contact of a disconnecting switch, when the load switch is operated, a disconnecting switch drives a vacuum arc-extinguishing device to act, so as to realize the opening and closing action of the arc-extinguishing chamber. Because the quality of the disconnecting switch of the isolating switch is large, the requirement on the operation function of the operating mechanism is large, the impact is large in the operation process, the mechanical operation life of the switch is influenced, and the closing current parameter of the load switch is not easy to improve. In addition, although the vacuum load switch and fuse combined electrical appliance have low cost, they have certain limitations, such as relatively weak arc extinguishing function, and frequent replacement of the fuse. Therefore, aiming at a plurality of power systems with higher requirements, the combined type vacuum circuit breaker is widely applied due to the advantages of strong arc extinguishing function, better protection effect and more convenient maintenance. The combined type vacuum circuit breaker has a trend towards a compact structure, but the compact design and the safety design are two contradictory points, when the combined type vacuum circuit breaker is compact in structure, the distance between each component is small, and the safety distance is difficult to be considered.
Therefore, it is an urgent problem to be solved by those skilled in the art to improve the conventional combined high voltage vacuum circuit breaker to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compact structure, it is small, and safe and reliable's combination formula high pressure vacuum circuit breaker.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a combined high-voltage vacuum circuit breaker comprises a bottom frame, wherein a three-phase wiring board and a conductive seat are respectively installed on two sides of the bottom frame in an insulating mode, the wiring board is suitable for being electrically connected with an incoming cable, and the conductive seat is suitable for being electrically connected with an outgoing cable; an isolation contact knife, a wall-penetrating pole column and a vacuum arc-extinguishing chamber are sequentially arranged between the wiring board and the conductive seat of each phase, the wall-penetrating pole column is arranged on the underframe in a penetrating manner, a conductive rod is arranged in the wall-penetrating pole column, and the underframe is further provided with an operating mechanism which is used for controlling the isolation contact knife and the vacuum arc-extinguishing chamber to move so as to open and close the circuit breaker; the method is characterized in that:
the isolation contact knife comprises a plurality of knife boards, wherein a compression bolt and a contact spring extend out of the outer side of at least one knife board;
the end part of the vacuum arc extinguish chamber is provided with a linkage assembly, the operating mechanism is connected with and disconnected from the vacuum arc extinguish chamber through the linkage assembly, the linkage assembly in the middle position is coated with an insulating cover, and the insulating cover extends to two sides of the linkage assembly and is separated among the three-phase linkage assembly;
the chassis is also fixedly provided with three current transformers, and the current transformers are circular rings and sleeved on the current transformers and are used for measuring the current passing through the conducting rods.
Preferably, the insulating separation blade is of a broken line type, the insulating separation blade comprises a fixing plate, a lifting plate and an isolating plate, the fixing plate is suitable for penetrating through a bolt and is fixed on the cutting board, the lifting plate is arranged between the fixing plate and the isolating plate and enables the isolating plate to extend outwards, and the isolating plate covers the pressing bolt and the end portion of the contact spring. The structure is simple and reliable, and the installation is convenient.
Preferably, the two ends of the cutting board are respectively provided with a compression bolt and a contact spring, and the two groups of insulating blocking pieces are respectively arranged at the two ends of the cutting board.
Preferably, the insulating boot is U style of calligraphy, the insulating boot includes mounting panel and space bar, the mounting panel is suitable for to pass the bolt and is fixed in on the linkage assembly, the space bar have two and set up respectively in the mounting panel both sides. The structure is simple and reliable, and the installation is convenient.
Preferably, the vacuum arc extinguish chamber is transversely arranged in the wall-penetrating pole, the conducting rod is electrically connected with the vacuum arc extinguish chamber, the linkage assembly is arranged at the end part of the wall-penetrating pole, and a connecting copper bar longitudinally arranged is arranged between the vacuum arc extinguish chamber and the conducting seat.
Preferably, a fixed contact is arranged on the wiring board, a movable contact is arranged at one end of the conductive rod, one end of the isolating contact knife rotates and is electrically connected to the movable contact, a first insulating pull rod is arranged between the operating mechanism and the isolating contact knife, the middle section of the isolating contact knife rotates and is connected to one end of the first insulating pull rod in an insulating mode, the other end of the first insulating pull rod is arranged on the operating mechanism in a linkage mode, the other end of the isolating contact knife can be in contact with or can be far away from the fixed contact, the isolating contact knife, the movable contact and the fixed contact form an isolating switch, and the operating mechanism controls the isolating contact knife to rotate through the first insulating pull rod so as to open and close the isolating switch;
the operating mechanism is further provided with a second insulating pull rod in a linkage mode, the second insulating pull rod is connected with the linkage assembly, and the operating mechanism is connected with the vacuum arc extinguish chamber in a separation and combination mode through the second insulating pull rod and the linkage assembly.
Preferably, a first insulator is arranged between the wiring board and the bottom frame, and the first insulator is used for insulating connection between the wiring board and the bottom frame; a second insulator is arranged between the conductive seat and the bottom frame and used for insulating connection between the conductive seat and the bottom frame; the insulator has a more compact and firm structure and can meet the requirement of insulating property.
The first insulator is arranged at the lower end of the underframe, and the second insulator is higher than the first insulator; the chassis is also provided with a grounding switch, the conductive seat is provided with a grounding contact, and the operating mechanism controls the grounding switch to be switched on and off; when the grounding switch is switched on, the grounding switch is connected with the grounding contact, and the grounding switch is close to the second insulator. The grounding switch has the function of grounding the high-voltage equipment and the line during maintenance, so that the personal safety is protected; the obvious mechanical grounding point in the loop is ensured, the circuit is determined to have no residual voltage, and the safety of maintenance and circuit outage is ensured; the effect of both sides ground connection when playing the circuit breaker and overhauing.
The high-low level of first insulator and second insulator sets up for earthing switch can more lean on the installation, can occupy littleer space when making earthing switch separating brake, makes overall structure compacter.
Compared with the prior art, the utility model has the advantages of:
1. the isolation contact knife extends outwards due to the compression bolt and the contact spring, so that the safety distance of the isolation contact knife between three phases is reduced. When the breaker needs to be compact in structure and small in size, the safety distance between the isolated contact knives is further reduced, and potential safety hazards exist. The insulating barrier piece can eliminate the hidden trouble, so that the phases can be well insulated, and the safety of the device is improved.
2. The linkage assembly is composed of a pull rod, a flexible connection, a mounting seat and the like, and is large in size. In the case of a compact circuit breaker, the safety distance between the phases is likely to be insufficient. Therefore, the insulating cover is arranged, so that good insulation can be kept between all phases, and the safety of the insulating cover is improved. It is worth mentioning that the insulation cover only needs to be arranged on the phase B, and each phase is not needed, so that the cost can be saved.
3. In the prior art, a current transformer is mostly installed in a switch cabinet, and the current transformer in the switch cabinet occupies a certain space. And this scheme is adorned current transformer on the chassis, and this structure can not increase the volume of circuit breaker on the one hand, and on the other hand can also save the space of the cubical switchboard body, makes the cubical switchboard body volume further reduce, makes the structure compacter.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention;
fig. 2 is an enlarged view of a preferred embodiment according to the present invention, shown at a in fig. 1;
fig. 3 is a front view of a preferred embodiment according to the present invention;
fig. 4 is a left side view of a preferred embodiment according to the present invention;
fig. 5 is a schematic plan view of an insulating barrier according to a preferred embodiment of the present invention;
fig. 6 is a schematic plan view of an insulating cover according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
As shown in fig. 1 to 6, a preferred embodiment of the present invention includes a bottom frame 1, wherein two sides of the bottom frame 1 are respectively provided with a three-phase wiring board 2 and a conductive seat 3 in an insulated manner, the wiring board 2 is suitable for electrically connecting an incoming cable, and the conductive seat 3 is suitable for electrically connecting an outgoing cable; an isolating contact knife 4, a wall-penetrating pole 5 and a vacuum arc-extinguishing chamber 6 are sequentially arranged between each phase wiring board 2 and the conductive seat 3, the wall-penetrating pole 5 is arranged on the underframe 1 in a penetrating mode, a conductive rod 51 is arranged in the wall-penetrating pole 5, an operating mechanism 7 is further arranged on the underframe 1, and the operating mechanism 7 is used for controlling the isolating contact knife 4 and the vacuum arc-extinguishing chamber 6 to move so as to open and close the circuit breaker.
Wherein, vacuum interrupter 6 is along transversely setting up in wearing wall utmost point post 5, conducting rod 51 electric connection vacuum interrupter 6, and linkage assembly 8 is installed in wearing wall utmost point post 5 tip, is provided with along the connection copper bar 61 of vertical installation between vacuum interrupter 6 and the conducting seat 3. The wiring board 2 is provided with a fixed contact 21, one end of the conductive rod 51 is provided with a movable contact 52, one end of the isolation contact knife 4 rotates and is electrically connected to the movable contact 52, a first insulation pull rod 71 is arranged between the operating mechanism 7 and the isolation contact knife 4, the middle section of the isolation contact knife 4 rotates and is connected to one end of the first insulation pull rod 71 in an insulation mode, the other end of the first insulation pull rod 71 is arranged on the operating mechanism 7 in a linkage mode, the other end of the isolation contact knife 4 can be in contact with or can be far away from the fixed contact 21, the isolation contact knife 4, the movable contact 52 and the fixed contact 21 form an isolation switch, and the operating mechanism 7 controls the isolation contact knife. A second insulating pull rod 72 is further arranged on the operating mechanism 7 in a linkage mode, the second insulating pull rod 72 is connected with the linkage component 8, and the operating mechanism 7 is connected with the vacuum arc-extinguishing chamber 6 in a switching mode through the second insulating pull rod 72 and the linkage component 8. A first insulator 22 is arranged between the wiring board 2 and the chassis 2, and the first insulator 22 is used for insulating connection of the wiring board and the chassis 2; a second insulator 32 is arranged between the conductive seat 3 and the chassis 1, and the second insulator 32 is used for insulating connection between the conductive seat 3 and the chassis 1. The first insulator 22 is arranged at the lower end of the underframe 1, and the second insulator 32 is higher than the first insulator 22; the chassis 1 is also provided with a grounding switch 9, the conductive seat 3 is provided with a grounding contact 31, and the operating mechanism 7 controls the grounding switch 9 to be switched on and off; when the grounding switch 9 is closed, the grounding switch 9 is connected to the grounding contact 31, and the grounding switch 9 is close to the second insulator 32.
The key point is that the isolation contact knife 4 comprises two knife boards 41, a pressing bolt 42 and a contact spring 43 extend out of the outer side of each knife board 41, an insulating blocking piece 44 is fixedly arranged on each knife board 41, and the insulating blocking piece 44 extends out of the outer side and covers the end parts of the pressing bolt 42 and the contact spring 43.
The end part of the vacuum arc extinguish chamber 6 is provided with a linkage assembly 8, the operating mechanism 7 is separated and combined with the vacuum arc extinguish chamber 6 through the linkage assembly 8, the linkage assembly 8 in the middle position is coated with an insulating cover 81, and the insulating cover 81 extends to two sides of the linkage assembly 8 and is separated between the three-phase linkage assemblies 8.
The chassis is also fixedly provided with three current transformers which are circular rings and sleeved on the current transformers and used for measuring the current passing through the conducting rod.
In this embodiment, the insulation blocking piece 44 is of a broken line type, the insulation blocking piece 44 includes a fixing plate 441, a lifting plate 442 and a separation plate 443, the fixing plate 441 is adapted to pass through a bolt and fixed on the knife plate 41, the lifting plate 442 is disposed between the fixing plate 441 and the separation plate 443 and extends the separation plate 443 outwards, and the separation plate 443 covers the end portion of the hold-down bolt 42 and the end portion of the contact spring 43. The two ends of the knife plate 41 are provided with a hold-down bolt 42 and a contact spring 43, and the two sets of insulating blocking pieces 44 are respectively arranged at the two ends of the knife plate 41. Insulating boot 81 is the U-shaped, and insulating boot 81 includes mounting panel 811 and space bar 812, and mounting panel 811 is suitable for passing the bolt and is fixed in linkage assembly 8 on, and space bar 812 has two and sets up respectively in mounting panel 811 both sides.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A combined high-voltage vacuum circuit breaker comprises a bottom frame, wherein a three-phase wiring board and a conductive seat are respectively installed on two sides of the bottom frame in an insulating mode, the wiring board is suitable for being electrically connected with an incoming cable, and the conductive seat is suitable for being electrically connected with an outgoing cable; an isolation contact knife, a wall-penetrating pole column and a vacuum arc-extinguishing chamber are sequentially arranged between the wiring board and the conductive seat of each phase, the wall-penetrating pole column is arranged on the underframe in a penetrating manner, a conductive rod is arranged in the wall-penetrating pole column, and the underframe is further provided with an operating mechanism which is used for controlling the isolation contact knife and the vacuum arc-extinguishing chamber to move so as to open and close the circuit breaker; the method is characterized in that:
the isolation contact knife comprises a plurality of knife boards, wherein a compression bolt and a contact spring extend out of the outer side of at least one knife board;
the end part of the vacuum arc extinguish chamber is provided with a linkage assembly, the operating mechanism is connected with and disconnected from the vacuum arc extinguish chamber through the linkage assembly, the linkage assembly in the middle position is coated with an insulating cover, and the insulating cover extends to two sides of the linkage assembly and is separated among the three-phase linkage assembly;
the chassis is also fixedly provided with three current transformers, and the current transformers are circular rings and sleeved on the current transformers and are used for measuring the current passing through the conducting rods.
2. A modular high-voltage vacuum interrupter as claimed in claim 1, characterized in that: insulating separation blade is broken line type, insulating separation blade includes the fixed plate, raises board and division board, the fixed plate is suitable for to pass the bolt and is fixed in on the cutting board, raise the board set up in the fixed plate with between the division board and make the division board extends to the outside, the division board cover in clamp bolt with contact spring tip.
3. A modular high-voltage vacuum interrupter as claimed in claim 2, characterized in that: the two ends of the cutting board are provided with compression bolts and contact springs, and the insulating blocking pieces are provided with two groups and are respectively arranged at the two ends of the cutting board.
4. A modular high-voltage vacuum interrupter as claimed in claim 1, characterized in that: the insulating boot is the U style of calligraphy, the insulating boot includes mounting panel and space bar, the mounting panel is suitable for to pass the bolt and is fixed in on the linkage assembly, the space bar have two and set up respectively in the mounting panel both sides.
5. A modular high-voltage vacuum interrupter according to any one of claims 1 to 4, characterized by: the vacuum arc extinguish chamber is transversely arranged in the wall-penetrating pole, the conducting rod is electrically connected with the vacuum arc extinguish chamber, the linkage assembly is arranged at the end part of the wall-penetrating pole, and a connecting copper bar longitudinally arranged is arranged between the vacuum arc extinguish chamber and the conducting seat.
6. Combined high-voltage vacuum circuit breaker according to claim 5, characterized in that: the wiring board is provided with a fixed contact, one end of the conductive rod is provided with a movable contact, one end of the isolating contact knife rotates and is electrically connected to the movable contact, a first insulating pull rod is arranged between the operating mechanism and the isolating contact knife, the middle section of the isolating contact knife rotates and is connected to one end of the first insulating pull rod in an insulating mode, the other end of the first insulating pull rod is arranged on the operating mechanism in a linkage mode, the other end of the isolating contact knife can be in contact with or can be far away from the fixed contact, the isolating contact knife, the movable contact and the fixed contact form an isolating switch, and the operating mechanism controls the isolating contact knife to rotate through the first insulating pull rod so as to switch on and switch off the isolating switch;
the operating mechanism is further provided with a second insulating pull rod in a linkage mode, the second insulating pull rod is connected with the linkage assembly, and the operating mechanism is connected with the vacuum arc extinguish chamber in a separation and combination mode through the second insulating pull rod and the linkage assembly.
7. Combined high-voltage vacuum interrupter according to claim 6, characterized in that: a first insulator is arranged between the wiring board and the bottom frame and used for insulating connection between the wiring board and the bottom frame; a second insulator is arranged between the conductive seat and the bottom frame and used for insulating connection between the conductive seat and the bottom frame;
the first insulator is arranged at the lower end of the underframe, and the second insulator is higher than the first insulator; the chassis is also provided with a grounding switch, the conductive seat is provided with a grounding contact, and the operating mechanism controls the grounding switch to be switched on and off; when the grounding switch is switched on, the grounding switch is connected with the grounding contact, and the grounding switch is close to the second insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921790821.4U CN210607087U (en) | 2019-10-23 | 2019-10-23 | Combined high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921790821.4U CN210607087U (en) | 2019-10-23 | 2019-10-23 | Combined high-voltage vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN210607087U true CN210607087U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921790821.4U Active CN210607087U (en) | 2019-10-23 | 2019-10-23 | Combined high-voltage vacuum circuit breaker |
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| CN (1) | CN210607087U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053889A (en) * | 2020-09-17 | 2020-12-08 | 安徽普众机电有限公司 | Vacuum circuit breaker with isolation function |
| CN113346400A (en) * | 2021-08-06 | 2021-09-03 | 宁波天安智能电网科技股份有限公司 | High-voltage switch equipment with online monitoring and emergency functions and working method |
| CN113674976A (en) * | 2021-07-27 | 2021-11-19 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
-
2019
- 2019-10-23 CN CN201921790821.4U patent/CN210607087U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053889A (en) * | 2020-09-17 | 2020-12-08 | 安徽普众机电有限公司 | Vacuum circuit breaker with isolation function |
| CN112053889B (en) * | 2020-09-17 | 2022-10-28 | 安徽普众机电有限公司 | Vacuum circuit breaker with isolation function |
| CN113674976A (en) * | 2021-07-27 | 2021-11-19 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
| CN113674976B (en) * | 2021-07-27 | 2023-08-18 | 四川宝光电器设备有限公司 | Integrated current transformer, circuit breaker comprising same and control method |
| CN113346400A (en) * | 2021-08-06 | 2021-09-03 | 宁波天安智能电网科技股份有限公司 | High-voltage switch equipment with online monitoring and emergency functions and working method |
| CN113346400B (en) * | 2021-08-06 | 2021-10-29 | 宁波天安智能电网科技股份有限公司 | High-voltage switch equipment with online monitoring and emergency functions and working method |
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Assignee: Ningbo Tianzhi Electric Technology Co.,Ltd. Assignor: NINGBO TIANAN SMART GRID TECHNOLOGY CO.,LTD. Contract record no.: X2023980053427 Denomination of utility model: A combined high-voltage vacuum circuit breaker Granted publication date: 20200522 License type: Common License Record date: 20231221 |