WO2023005142A1 - 一种具有冗余设计的电磁斥力机构及开关设备 - Google Patents
一种具有冗余设计的电磁斥力机构及开关设备 Download PDFInfo
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- 230000007246 mechanism Effects 0.000 title claims abstract description 65
- 230000005540 biological transmission Effects 0.000 claims abstract description 173
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/27—Relays with armature having two stable magnetic states and operated by change from one state to the other
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
Definitions
- the invention relates to an electromagnetic repulsion mechanism with redundant design and a switchgear using the electromagnetic repulsion mechanism.
- the electromagnetic repulsion mechanism is basically used as the operating mechanism of the switchgear.
- the basic principle of the electromagnetic repulsion mechanism is: the pre-charged capacitor discharges to the driving coil, a pulse current is generated in the driving coil, and the pulse current generates an alternating magnetic field around the driving coil, and a reverse induced eddy current is generated on the metal disk, and the induced eddy current generates
- the interaction between the magnetic field generated by the magnetic field and the magnetic field generated by the driving coil generates electromagnetic force, which drives the movement of the transmission rod and the contacts of the arc extinguishing chamber to realize the opening and closing operation of the switch.
- the Chinese invention patent application with the application number 201810998810.9 discloses a mechanical fast switch based on an electromagnetic repulsion mechanism.
- the operating mechanism, the electromagnetic repulsion mechanism and the operating mechanism are completely independent, the electromagnetic repulsion mechanism is only used as the opening operating mechanism to drive the mechanical fast switch opening, the operating mechanism adopts a bistable permanent magnet mechanism, which can realize the opening and closing operations, the mechanical
- the quick switch is in use, the mechanical quick switch is opened under the drive of the electromagnetic repulsion mechanism or the operating mechanism; and the mechanical quick switch is closed under the independent drive of the operating mechanism.
- the electromagnetic repulsion mechanism has the advantages of fast start-up and high opening and closing speed
- the current electromagnetic repulsion mechanism is used as an operating mechanism without considering redundant design. Once the electromagnetic repulsion mechanism is abnormal and refuses to operate, it will lead to failure of opening and closing.
- the bistable permanent magnet mechanism can also be used to replace the electromagnetic repulsion mechanism for opening, it is difficult for the bistable permanent magnet mechanism to achieve the same opening speed as the electromagnetic repulsion mechanism.
- the circuit breaker using the electromagnetic repulsion mechanism as the operating mechanism can only use the backup of the whole machine for redundant backup from the perspective of reliability, which leads to a sharp increase in cost and requires more layout space. For space-sensitive applications such as renovation of old stations, it is difficult or even impossible to implement the full-machine backup solution.
- the purpose of the present invention is to provide an electromagnetic repulsion mechanism with a redundant design to solve the technical problems in the prior art that the electromagnetic repulsion mechanism has no redundant design and the backup of the whole machine takes up a large space.
- the object of the present invention is also to provide a switchgear using the electromagnetic repulsion mechanism.
- An electromagnetic repulsion mechanism with redundant design of the present invention adopts the following technical scheme:
- An electromagnetic repulsion mechanism with a redundant design comprising: a first electromagnetic repulsion unit and a second electromagnetic repulsion unit, one of the first electromagnetic repulsion unit and the second electromagnetic repulsion unit drives a switchgear or both simultaneously drive the switchgear;
- Both the first electromagnetic repulsion unit and the second electromagnetic repulsion unit include: a transmission rod, the axis of which extends along the front-rear direction, and is used to move and output power along the front-rear direction; the repulsion disk is fixed on the transmission rod; the front side repulsion coil is arranged on the repulsion disk The front side is connected with a discharge circuit, which is used to generate repulsion between the repulsion disk and the repulsion disk after power-on, so that the repulsion disk drives the transmission rod to move backward;
- the transmission rod, the repulsion disk and the front repulsion coil of the first electromagnetic repulsion unit are respectively the first transmission rod, the first repulsion disk and the first front repulsion coil
- the transmission rod, the repulsion disk and the front repulsion coil of the second electromagnetic repulsion unit are respectively the first transmission rod, the first repulsion disk and the first front repulsion coil.
- the side repulsion coils are respectively the second transmission rod, the second repulsion disk and the second front repulsion coil; the first electromagnetic repulsion unit is located behind the second repulsion disk, the first transmission rod is a hollow rod, and the rear end of the second transmission rod Penetrating into the first transmission rod, the rear ends of the first transmission rod and the second transmission rod respectively have pushing parts for pushing the moving end of the switch body of the switchgear to move the moving end of the switch body.
- the electromagnetic repulsion mechanism of the present invention is provided with a first electromagnetic repulsion unit and a second electromagnetic repulsion unit nested together, and the first and second electromagnetic repulsion units can choose one action to drive the switchgear, and can also act simultaneously Drive the switchgear, so that when one set of electromagnetic repulsion units fails, the other set of electromagnetic repulsion units can be used as a backup to ensure the normal operation of the switchgear.
- the two sets of electromagnetic repulsion units in the present invention are nested, that is, the transmission rods of the two electromagnetic repulsion units are threaded together, the two sets of electromagnetic repulsion units are equivalent to being arranged in parallel, and the tops of the rear ends of the two transmission rods
- the push parts can push the moving end of the switch body of the switchgear to drive the moving end of the switch body to move.
- This kind of nested parallel arrangement is compared with the mechanical operating mechanism and the electromagnetic holding mechanism in the prior art.
- the operation mode can reduce the cost and the installation size, and can be applied to various installation occasions.
- the second transmission rod and the first transmission rod are guided and slidably matched. Since there is a guiding and cooperative relationship between the first transmission rod and the second transmission rod, it is equivalent to that the rear end of the second transmission rod has been realized by relying on the first transmission rod.
- Guide support so that when each electromagnetic repulsion unit is guided and supported, only one guide support can be provided at the front end of the second transmission rod, and one guide support can be omitted.
- the discharge circuit includes a pre-charging capacitor and a trigger switch, the pre-charging capacitor of the first electromagnetic repulsion unit and the pre-charging capacitor of the second electromagnetic repulsion unit set different charging voltages, and different electromagnetic repulsion voltages can be selected according to actual conditions during use. Repulsion mechanism, and then adapt to switchgear of different specifications.
- the second transmission rod includes a large-diameter rod section and a small-diameter rod section arranged in sequence, and a rear-facing step surface is formed between the large-diameter rod section and the small-diameter rod section, and the second repulsion disk is fixedly installed on the large-diameter rod On the segment, the small-diameter section of the second transmission rod penetrates in the first transmission rod.
- the front end of the inner hole of the hollow rod is a bell mouth, which is convenient for the first transmission rod to be fitted on the small-diameter rod section.
- a switchgear including a moving end of a switch body, capable of moving along the opening and closing direction;
- the electromagnetic repulsion mechanism is used to drive the movable end of the switch body to move;
- the electromagnetic repulsion mechanism includes: a first electromagnetic repulsion unit and a second electromagnetic repulsion unit, one of the first electromagnetic repulsion unit and the second electromagnetic repulsion unit drives the switchgear or both or drive the switchgear at the same time;
- the first electromagnetic repulsion unit and the second electromagnetic repulsion unit both include: a transmission rod, the axis of which extends along the front-to-back direction, and is used to move along the front-to-back direction to output power;
- the repulsion disk is fixed on the transmission rod;
- the front repulsion coil is arranged on the front side of the repulsion disk and is connected with a discharge circuit, which is used to generate repulsion between the repulsion disk and the repulsion disk after electrification, so that the repulsion disk drives the transmission rod to move backward;
- the transmission rod, the repulsion disk and the front repulsion coil of the first electromagnetic repulsion unit are respectively the first transmission rod, the first repulsion disk and the first front repulsion coil
- the transmission rod, the repulsion disk and the front repulsion coil of the second electromagnetic repulsion unit are respectively the first transmission rod, the first repulsion disk and the first front repulsion coil.
- the side repulsion coils are respectively the second transmission rod, the second repulsion disk and the second front repulsion coil; the first electromagnetic repulsion unit is located behind the second repulsion disk, the first transmission rod is a hollow rod, and the rear end of the second transmission rod Penetrating into the first transmission rod, the rear ends of the first transmission rod and the second transmission rod respectively have pushing parts for pushing the moving end of the switch body of the switchgear to move the moving end of the switch body.
- the switchgear of the present invention adopts an electromagnetic repulsion mechanism with a redundant design
- the electromagnetic repulsion mechanism is provided with a first electromagnetic repulsion unit and a second electromagnetic repulsion unit nested together, and the first and second electromagnetic repulsion units can be Select one action to drive the switchgear, or act simultaneously to drive the switchgear, so that when one set of electromagnetic repulsion units fails, the other set of electromagnetic repulsion units can be used as a backup to ensure the normal operation of the switchgear.
- the two sets of electromagnetic repulsion units in the present invention are nested, that is, the transmission rods of the two electromagnetic repulsion units are threaded together, the two sets of electromagnetic repulsion units are equivalent to being arranged in parallel, and the tops of the rear ends of the two transmission rods
- the push parts can push the moving end of the switch body of the switchgear to drive the moving end of the switch body to move.
- This kind of nested parallel arrangement is compared with the mechanical operating mechanism and the electromagnetic holding mechanism in the prior art.
- the operation mode can reduce the cost and the installation size, and can be applied to various installation occasions.
- the second transmission rod and the first transmission rod are guided and slidably matched. Since there is a guiding and cooperative relationship between the first transmission rod and the second transmission rod, it is equivalent to that the rear end of the second transmission rod has been realized by relying on the first transmission rod.
- Guide support so that when each electromagnetic repulsion unit is guided and supported, only one guide support can be provided at the front end of the second transmission rod, and one guide support can be omitted.
- the discharge circuit includes a pre-charging capacitor and a trigger switch, the pre-charging capacitor of the first electromagnetic repulsion unit and the pre-charging capacitor of the second electromagnetic repulsion unit set different charging voltages, and different electromagnetic repulsion voltages can be selected according to actual conditions during use. Repulsion mechanism, and then adapt to switchgear of different specifications.
- the second transmission rod includes a large-diameter rod section and a small-diameter rod section arranged in sequence, and a rear-facing step surface is formed between the large-diameter rod section and the small-diameter rod section, and the second repulsion disk is fixedly installed on the large-diameter rod On the segment, the small-diameter section of the second transmission rod penetrates in the first transmission rod.
- the front end of the inner hole of the hollow rod is a bell mouth, which is convenient for the first transmission rod to be fitted on the small-diameter rod section.
- Fig. 1 is a schematic diagram of Embodiment 1 of an electromagnetic repulsion mechanism with redundant design in the present invention
- the first electromagnetic repulsion unit 11. The first transmission rod; 111. The bell mouth; 12. The first repulsion disk; 13. The first discharge circuit; 14. The first front repulsion coil; 2. The second Electromagnetic repulsion unit; 21, second transmission rod; 211, large diameter rod section; 212, small diameter rod section; 213, step surface; 22, second repulsion disk; 23, second discharge circuit; 24, second front side repulsion Coil; 3. The moving end of the switch body.
- a specific embodiment 1 of an electromagnetic repulsion mechanism with redundant design in the present invention includes a housing and two electromagnetic repulsion units, and the two electromagnetic repulsion units are respectively the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2, when in use, the two electromagnetic repulsion units can either act to drive the switchgear, or act simultaneously to drive the switchgear.
- the two electromagnetic repulsion units can either act to drive the switchgear, or act simultaneously to drive the switchgear.
- the other acts as a backup repulsion unit.
- the backup repulsion unit can ensure the normal opening or closing of the switchgear.
- the electromagnetic repulsion mechanism drives the switchgear to open as an example for illustration.
- the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 all include a transmission rod, a repulsion disk, a front side repulsion coil and a discharge circuit connected with the front side repulsion coil, the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2
- the discharge circuits of the two are independent of each other, and each discharge circuit includes a pre-charging capacitor and a trigger switch, and the pre-charging capacitors are respectively connected to a charging circuit (not shown in the figure).
- the switch body moving end 3 of the switchgear is located behind the electromagnetic repulsion mechanism, the switch body moving end 3 moves backward, and the switchgear realizes opening.
- the front side repulsion coil is divided Gate repulsion coil; the repulsion disk is fixed on the transmission rod, and the repulsion disk is coaxially arranged with the transmission rod; the front side repulsion coil is arranged on the front side of the repulsion disk, which is used to generate repulsion between the repulsion disk and the repulsion disk after electrification, and the repulsion disk is received by the front
- the repulsion of the side repulsion coil drives the transmission rod to move backward.
- the transmission rod, the repulsion disk and the front side repulsion coil of the first electromagnetic repulsion unit 1 are respectively defined as the first transmission rod 11, the first repulsion disk 12 and the first front side
- the repulsion coil 14 is defined as the second transmission rod 21, the second repulsion disk 22 and the second front side repulsion coil 24 respectively with the transmission rod, the repulsion disk and the front side repulsion coil of the second electromagnetic repulsion unit 2;
- the first electromagnetic repulsion unit 1 is located behind the second repulsion disk 22, and the first front repulsion coil 14 and the second front repulsion coil 24 are respectively arranged on the front side of the first repulsion disk 12 and the second repulsion disk 22.
- the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 are nested.
- the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 are arranged side by side.
- the two electromagnetic repulsion units can simultaneously push the moving end 3 of the switch body of the switchgear.
- the first transmission rod 11 is a hollow rod, and the rear end of the second transmission rod 21 penetrates into the first transmission rod 11.
- the rear end faces of the first transmission rod 11 and the second transmission rod 21 respectively constitute respective pushing parts for the action of the moving end 3 of the push switch body.
- the rear end faces of the first transmission rod 11 and the second transmission rod 21 are in the same state, and both of them are in contact with the moving end 3 of the switch body.
- the rod 11 and the second transmission rod 21 move backwards under the drive of the corresponding repulsion disc respectively, the rear end faces of the first transmission rod 11 and the second transmission rod 21 respectively push the movable end 3 of the switch body, so that the movable end of the switch body 3 Move quickly towards the opening direction to realize the opening of the switchgear.
- the switchgear needs to be opened, the second transmission rod 21 is fixed and the first trigger switch is triggered.
- the first transmission rod 11 moves toward the opening direction along the extension direction of the second transmission rod 21, and the rear end face of the first transmission rod 11 pushes the moving end 3 of the switch body to move, so that the switch The device is switched off.
- the first transmission rod 11 is fixed, and the second transmission rod 21 pushes the moving end of the switch body under the drive of the repulsion disk and the guidance of the first transmission rod 11 3 moves to make the switchgear realize opening.
- the trigger switches of the discharge circuits of the two electromagnetic repulsion units are closed at the same time, and the two transmission rods act synchronously, and then push the moving end 3 of the switch body synchronously.
- the first integral structure formed by the repulsion disk and the repulsion coil of the first electromagnetic repulsion unit 1 and the repulsion force of the second repulsion unit is separated from each other by a housing, and the housing structure and the guide support cooperation between the housing and the transmission rod are not shown in FIG. 1 .
- the housing not only has a part between the first overall structure and the second overall structure , also has a part on the side of the first integral structure facing away from the second integral structure, the front end of the first transmission rod 11 on the front side of the first integral structure and the rear end on the rear side of the first integral structure respectively There are rod sections that cooperate with the housing guide supports.
- Embodiment 1 of the present invention the first transmission rod 11 and the second transmission rod 21 are guided and slidably matched.
- the difference from Embodiment 1 is that the first transmission rod and the second transmission rod An interval can be set between the second transmission rod and the first transmission rod. There is no guide fit relationship. At this time, in order to ensure the stability of the second transmission rod, it is necessary to place the second transmission rod on the rear side of the first overall structure. One section is matched with the housing guide support.
- the first pre-charged capacitor of the first electromagnetic repulsion unit 1 and the second pre-charged capacitor of the second electromagnetic repulsion unit 2 output different charging voltages when discharging, and the output voltage can be based on the voltage level of the switching device Set it yourself.
- the output voltages of the pre-charged capacitors of the two electromagnetic repulsion units may also be set to be the same.
- the second transmission rod 21 is a stepped rod, and the stepped rod includes a large-diameter rod segment 211 and a small-diameter rod segment 212 arranged in sequence, and a rear-facing step surface is formed between the large-diameter rod segment 211 and the small-diameter rod segment 212 213 , the second repulsion disk 22 is fixedly installed on the large-diameter rod section 211 , and the first transmission rod 11 is sleeved on the small-diameter rod section 212 from back to front.
- the second transmission rod may be a straight rod of equal diameter.
- the front end of the inner hole of the first transmission rod 11 is a bell mouth 111 .
- the front end of the inner hole may not be provided with a bell mouth, or the rear end of the second transmission rod may be set as a tapered section to facilitate the second transmission. Set between the rod and the first transmission rod.
- Embodiment 1 a pre-charge capacitor is used in the discharge circuit to provide voltage for the repulsion coil.
- a power supply may be used instead of the pre-charge capacitor.
- each electromagnetic repulsion unit is only provided with a front side repulsion coil on the side of the repulsion disk facing away from the opening direction.
- Magnetic holding mechanism for example, a mechanical fast switch mentioned in the background of the present invention uses a bistable permanent magnetic holding mechanism to realize the closing operation.
- the difference from Embodiment 1 is that the electromagnetic repulsion mechanism can be used to drive the switchgear to close by changing the relative position of the electromagnetic repulsion mechanism and the moving end 3 of the switch body.
- the front side The repulsion coil is used as the closing repulsion coil, and the transmission rod moves backward to drive the moving end 3 of the switch body to realize the closing operation of the switchgear.
- the difference from Embodiment 1 is that the repulsion coils are arranged on both sides of the repulsion disk, that is, the rear repulsion coils are arranged on the rear side of the repulsion disk, but, in order to allow the two transmission
- the rod drives the moving end of the switch body to move towards the closing direction.
- the transmission rod should be connected to the moving end of the switch body.
- the transmission rod and the moving end of the switch body can not be connected, that is, the transmission rod and the moving end of the switch body can be disconnected.
- the moving ends of the switch body are contact fit.
- the transmission rod and the moving end 3 of the switch body are in contact fit.
- the transmission rod and the moving end of the switch body can also be arranged at intervals, that is, there is a gap between the transmission rod and the moving end of the switch body. At this time, only the transmission rod moves to a certain extent. Only when the moving end of the switch body is in contact with the distance can drive the moving end of the switch body to move, which is equivalent to driving the moving end of the switch body to move at a set initial speed by the transmission rod.
- the first transmission rod 11 is a hollow rod, and the rear end of the second transmission rod 21 penetrates into the first transmission rod 11.
- the first transmission rod is provided with a shaft extending along the axial direction.
- the guide groove, the cross-section of the guide groove is T-shaped, the outer peripheral surface of the second transmission rod is provided with a guide key, the cross-section of the guide key is T-shaped, the first transmission rod and the second transmission rod are arranged side by side, the guide key and the guide groove Guide sliding fit, and then realize the guide fit of the first transmission rod and the second transmission rod.
- the switchgear can be a high-speed circuit breaker or other high-speed mechanical switch.
- the switchgear includes a switch body moving end and an electromagnetic repulsion mechanism.
- the switch body moving end can move along the opening and closing direction.
- the electromagnetic repulsion mechanism has a redundant design, and its specific structure is the same as that of the electromagnetic repulsion mechanism in the above-mentioned embodiments, so it will not be repeated here.
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Abstract
本发明涉及一种具有冗余设计的电磁斥力机构及开关设备，电磁斥力机构包括第一、第二电磁斥力单元，第一、第二电磁斥力单元择一或两者同时驱动开关设备；第一电磁斥力单元包括第一传动杆、第一斥力盘和第一前侧斥力线圈，第二电磁斥力单元包括第二传动杆、第二斥力盘和第二前侧斥力线圈；斥力盘固定在传动杆上；前侧斥力线圈设置在斥力盘的前侧；第一电磁斥力单元位于第二斥力盘的后方，第一传动杆为空心杆，第二传动杆的后端穿入第一传动杆中，第一传动杆和第二传动杆的后端分别具有用于顶推开关设备的开关本体动端以使开关本体动端动作的顶推部。本发明通过在电磁斥力机构内部嵌套设置冗余电磁驱动单元，保证开关设备可靠性同时减少布置尺寸。
Description
本发明涉及一种具有冗余设计的电磁斥力机构，以及使用该电磁斥力机构的开关设备。
在目前的高压柔性直流输电工程中，大量应用了高压直流断路器、高压直流可控避雷器及高压超导限流器等设备，这些设备都对开关设备提出了快速分合闸的要求(分合闸时间小于5ms)，为了实现快速分合闸操作，基本上都是用了电磁斥力机构作为开关设备的操动机构。电磁斥力机构的基本原理是：预充电的电容器向驱动线圈放电，驱动线圈中产生脉冲电流，脉冲电流使驱动线圈周围产生交变磁场，并在金属盘上产生反向的感应涡流，感应涡流产生的磁场与驱动线圈产生的磁场相互作用产生电磁力，带动传动杆以及灭弧室触头运动，实现开关的分合闸操作。
例如，申请号为201810998810.9的中国发明专利申请就公开了一种基于电磁斥力机构的机械快速开关，该机械快速开关在真空灭弧室的动端(也即开关本体动端)连接了电磁斥力机构和操作机构，电磁斥力机构与操作机构完全独立，电磁斥力机构仅作为驱动机械快速开关分闸的分闸操动机构，操作机构采用双稳态永磁机构，能够实现分闸和合闸操作，机械快速开关使用时，在电磁斥力机构或者操作机构的驱动下，所述机械快速开关分闸；在操作机构单独的驱动下，所述机械快速开关合闸。
虽然电磁斥力机构具有启动快、分合速度高的优点，但目前电磁斥力机构作为操动机构，并未考虑冗余设计，一旦电磁斥力机构出现异常，发生拒动，将导致分合闸失败。而对于上述机械快速开关来说，虽然也能够利用双稳态永磁机构来代替电磁斥力机构进行分闸，但是双稳态永磁机构难以达到像电磁斥力机构一样的分闸速度。另外，现有技术中使用电磁斥力机构做操动机构的断路器从可靠性角度考虑所做的冗余备份，只能采用整机备份，导致成本急剧增加，且需占用更多的布置空间，对于老站改造等布置空间敏感的应用场合，整机备份的方案实施难度大甚至完全无法实施。
发明内容
本发明的目的在于提供一种具有冗余设计的电磁斥力机构，用以解决现有技术中电磁斥力机构没有冗余设计，以及采用整机备份占用空间大的技术问题。本发明的目的还在于提供一种使用该电磁斥力机构的开关设备。
本发明的一种具有冗余设计的电磁斥力机构采用如下技术方案：
一种具有冗余设计的电磁斥力机构，包括：第一电磁斥力单元和第二电磁斥力单元，第一电磁斥力单元和第二电磁斥力单元择一驱动开关设备或者两者同时驱动开关设备；
第一电磁斥力单元和第二电磁斥力单元均包括：传动杆，轴线沿前后方向延伸，用于沿前后方向运动输出动力；斥力盘，固定在传动杆上；前侧斥力线圈，设置在斥力盘的前侧，连接有放电电路，用于在通电后与斥力盘之间产生斥力，使斥力盘带动传动杆向后移动；
其中，第一电磁斥力单元的传动杆、斥力盘和前侧斥力线圈分别为第一传动杆、第一斥力盘和第一前侧斥力线圈，第二电磁斥力单元的传动杆、斥力盘和前侧斥力线圈分别为第二传动杆、第二斥力盘和第二前侧斥力线圈；第一电磁斥力单元位于第二斥力盘的后方，第一传动杆为空心杆，第二传动杆的后端穿入第一传动杆中，第一传动杆和第二传动杆的后端分别具有用于顶推开关设备的开关本体动端以使开关本体动端动作的顶推部。
有益效果是：本发明的电磁斥力机构设有嵌套在一起的第一电磁斥力单元和第二电磁斥力单元，第一、第二电磁斥力单元可以择一动作用来驱动开关设备，也可以同时动作驱动开关设备，这样在其中一套电磁斥力单元出现故障时，能够通过另外一套电磁斥力单元作为备用来保证开关设备的正常操作。同时，由于本发明中的两套电磁斥力单元嵌套布置，即两个电磁斥力单元的传动杆穿套在一起，两套电磁斥力单元相当于并联布置在了一起，两个传动杆后端的顶推部均能够顶推开关设备的开关本体动端，驱使开关本体动端动作，这种嵌套并联布置的方式，相比现有技术中采用机械操动机构以及电磁保持机构一备一用的操动方式，能够降低成本，并且减少安装尺寸，能够适用多种安装场合。
进一步地，第二传动杆与第一传动杆导向滑动配合，由于第一传动杆与第二传动杆之间存在导向配合关系，相当于第二传动杆的后端已经依靠第一传动杆实现了导向支撑，这样在对每一个电磁斥力单元进行导向支撑时，可以仅在第二传动杆的前端部分设置一处导向支撑，省略一处导向支撑。
进一步地，所述放电电路包括预充电电容和触发开关，第一电磁斥力单元的预充电电容和第二电磁斥力单元的预充电电容设定不同的充电电压，在使用时可以根据实际选择不同电磁斥力机构，进而适应不同规格的开关设备。
进一步地，所述第二传动杆包括前后依次设置的大径杆段和小径杆段，大径杆段与小径杆段之间形成朝后的台阶面，第二斥力盘固定安装在大径杆段上，第二传动杆的小径段穿入第一传动杆中。通过将第二传动杆设置为阶梯杆，第一传动杆套设在小径杆段上，进而能够缩小两个电磁斥力单元之间的径向尺寸差。
进一步地，空心杆的内孔前端为喇叭口，方便第一传动杆套装在小径杆段上。
本发明的开关设备采用如下技术方案：
一种开关设备，包括开关本体动端，能够沿分合闸方向移动；
电磁斥力机构，用于驱动开关本体动端移动；所述电磁斥力机构包括：第一电磁斥力单元和第二电磁斥力单元，第一电磁斥力单元和第二电磁斥力单元择一驱动开关设备或者两者同时驱动开关设备；第一电磁斥力单元和第二电磁斥力单元均包括：传动杆，轴线沿前后方向延伸，用于沿前后方向运动输出动力；
斥力盘，固定在传动杆上；前侧斥力线圈，设置在斥力盘的前侧，连接有放电电路，用于在通电后与斥力盘之间产生斥力，使斥力盘带动传动杆向后移动；
其中，第一电磁斥力单元的传动杆、斥力盘和前侧斥力线圈分别为第一传动杆、第一斥力盘和第一前侧斥力线圈，第二电磁斥力单元的传动杆、斥力盘和前侧斥力线圈分别为第二传动杆、第二斥力盘和第二前侧斥力线圈；第一电磁斥力单元位于第二斥力盘的后方，第一传动杆为空心杆，第二传动杆的后端穿入第一传动杆中，第一传动杆和第二传动杆的后端分别具有用于顶推开关设备的开关本体动端以使开关本体动端动作的顶推部。
有益效果是：本发明的开关设备采用具有冗余设计的电磁斥力机构，电磁斥力机构设有嵌套在一起的第一电磁斥力单元和第二电磁斥力单元，第一、第二电磁斥力单元可以择一动作用来驱动开关设备，也可以同时动作驱动开关设备，这样在其中一套电磁斥力单元出现故障时，能够通过另外一套电磁斥力单元作为备用来保证开关设备的正常操作。同时，由于本发明中的两套电磁斥力单元嵌套布置，即两个电磁斥力单元的传动杆穿套在一起，两套电磁斥力单元相当于并联布置在了一起，两个传动杆后端的顶推部均能够顶推开关设备的开关本体动端，驱使开关本体动端动作，这种嵌套并联布置的方式，相比现有技术中采用机械操动机构以及电磁保持机构一备一用的操动方式，能够降低成本，并且减少安装尺寸，能够适用多种安装场合。
进一步地，第二传动杆与第一传动杆导向滑动配合，由于第一传动杆与第二传动杆之间存在导向配合关系，相当于第二传动杆的后端已经依靠第一传动杆实现了导向支撑，这样在对每一个电磁斥力单元进行导向支撑时，可以仅在第二传动杆的前端部分设置一处导向支撑，省略一处导向支撑。
进一步地，所述放电电路包括预充电电容和触发开关，第一电磁斥力单元的预充电电容和第二电磁斥力单元的预充电电容设定不同的充电电压，在使用时可以根据实际选择不同电磁斥力机构，进而适应不同规格的开关设备。
进一步地，所述第二传动杆包括前后依次设置的大径杆段和小径杆段，大径杆段与小径杆段之间形成朝后的台阶面，第二斥力盘固定安装在大径杆段上，第二传动杆的小径段穿入第一传动杆中。通过将第二传动杆设置为阶梯杆，第一传动杆套设在小径杆段上，进而能够缩小两个电磁斥力单元之间的径向尺寸差。
进一步地，空心杆的内孔前端为喇叭口，方便第一传动杆套装在小径杆段上。
图1是本发明一种具有冗余设计的电磁斥力机构的实施例1的示意图；
图中：1、第一电磁斥力单元；11、第一传动杆；111、喇叭口；12、第一斥力盘；13、第一放电电路；14、第一前侧斥力线圈；2、第二电磁斥力单元；21、第二传动杆；211、大径杆段；212、小径杆段；213、台阶面；22、第二斥力盘；23、第二放电电路；24、第二前侧斥力线圈；3、开关本体动端。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明，即所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，术语“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以下结合实施例对本发明的特征和性能作进一步的详细描述。
本发明一种具有冗余设计的电磁斥力机构的具体实施例1：如图1所示，该电磁斥力机构包括壳体以及两个电磁斥力单元，两个电磁斥力单元分别为第一电磁斥力单元1和第二电磁斥力单元2，在使用时，两个电磁斥力单元可以择一动作以驱动开关设备，也可以同时 动作来驱动开关设备。当两个电磁斥力单元择一动作时，另一个作为备用斥力单元，当其中一个电磁斥力单元出现故障时，备用斥力单元能够保证开关设备正常分闸或合闸。当两个电磁斥力单元同时动作时，两个电磁斥力单元同步进行分闸或合闸操作，其中一个单元出现故障不会影响另外一个单元正常进行分闸或合闸操作。本实施例1中，以电磁斥力机构驱动开关设备分闸为例进行说明。
第一电磁斥力单元1和第二电磁斥力单元2均包括传动杆、斥力盘、前侧斥力线圈以及与前侧斥力线圈连接的放电电路，第一电磁斥力单元1和第二电磁斥力单元2两者的放电电路彼此独立，各放电电路均包括预充电电容和触发开关，预充电电容分别连接有充电电路(图中未示出)。
定义传动杆的轴线延伸方向为前后方向，开关设备的开关本体动端3位于电磁斥力机构的后方，开关本体动端3向后移动，开关设备实现分闸，此时，前侧斥力线圈为分闸斥力线圈；斥力盘固定在传动杆上，斥力盘与传动杆同轴布置；前侧斥力线圈设置在斥力盘的前侧，用于在通电后与斥力盘之间产生斥力，斥力盘受到前侧斥力线圈的斥力后带动传动杆向后移动。
为了方便分别对两个电磁斥力单元进行描述，这里将第一电磁斥力单元1的传动杆、斥力盘和前侧斥力线圈分别定义为第一传动杆11、第一斥力盘12和第一前侧斥力线圈14，将第二电磁斥力单元2的传动杆、斥力盘和前侧斥力线圈分别定义为第二传动杆21、第二斥力盘22和第二前侧斥力线圈24；第一电磁斥力单元1位于第二斥力盘22的后方，第一前侧斥力线圈14和第二前侧斥力线圈24分别设置在第一斥力盘12和第二斥力盘22的前侧。
本发明中，第一电磁斥力单元1和第二电磁斥力单元2嵌套设置。第一电磁斥力单元1和第二电磁斥力单元2以并列布置的方式，在两个电磁斥力单元同时使用时，能够同步顶推开关设备的开关本体动端3。具体地，第一传动杆11为空心杆，第二传动杆21的后端穿入第一传动杆11内，本实施例中，第二传动杆21的后端与第一传动杆11之间导向滑动配合，第一传动杆11与第二传动杆21的后端端面分别构成了各自的用于顶推开关本体动端3动作的顶推部。如图1所示，本实施例中，第一传动杆11与第二传动杆21两者的后端端面处于平齐的状态，且两者均与开关本体动端3接触，当第一传动杆11和第二传动杆21分别在对应斥力盘的带动下向后移动时，第一传动杆11和第二传动杆21的后端端面分别顶推开关本体动端3，使得开关本体动端3朝分闸方向快速移动，实现开关设备分闸。
本发明中，当两个电磁斥力单元择一进行使用时，例如，仅使用第一电磁斥力单元1，当开关设备需要分闸时，第二传动杆21固定不动，第一触发开关触发，第一传动杆11在第 一斥力盘12的带动下，沿第二传动杆21的延伸方向朝分闸方向移动，第一传动杆11的后端端面顶推开关本体动端3移动，使得开关设备实现分闸。同理，当仅使用第二电磁斥力单元2时，第一传动杆11固定不动，第二传动杆21在斥力盘的带动下和第一传动杆11的导向作用下顶推开关本体动端3移动，使得开关设备实现分闸。当两个电磁斥力单元同时使用时，两个电磁斥力单元的放电电路的触发开关同时闭合，两个传动杆同步动作，进而同步顶推开关本体动端3。
本发明中，为了避免第一电磁斥力单元1与第二电磁斥力单元2之间的电磁干扰，第一电磁斥力单元1的斥力盘和斥力线圈构成的第一整体结构与第二斥力单元的斥力盘和斥力线圈构成的第二整体结构之间利用壳体彼此隔开，图1中并未示出壳体结构以及壳体与传动杆之间的导向支撑配合。另外，由于第二传动杆21后端已经依靠第一传动杆11实现导向滑动，这样在设置导向支撑时，只需要为第二电磁斥力单元2设置一处导向支撑，即仅将第二传动杆21前端的一段与壳体导向支撑配合，第二传动杆21的后端与壳体之间无需额外建立导向支撑配合关系；壳体不仅具有处于第一整体结构和第二整体结构之间的部分，还具有处于第一整体结构的背向第二整体结构的一侧的部分，第一传动杆11在处于第一整体结构的前侧的前端和处于第一整体结构的后侧的后端分别具有与壳体导向支撑配合的杆段。
本发明的实施例1中第一传动杆11与第二传动杆21导向滑动配合，作为本发明的另外一种实施例，与实施例1不同之处在于，第一传动杆与第二传动杆之间可以设置间隔，第二传动杆与第一传动杆之间不具有导向配合关系，此时，为了保证第二传动杆的稳定性，需要将第二传动杆的处于第一整体结构后侧的一段与壳体导向支撑配合。
实施例1中，第一电磁斥力单元1的第一预充电电容与第二电磁斥力单元2的第二预充电电容在放电时输出不同的充电电压，关于输出电压大小可以根据开关设备的电压等级自行设定。当然，作为本发明的另外一种实施例，在实施例1的基础上，也可以将两个电磁斥力单元的预充电电容的输出电压设置为相同。
实施例1中，第二传动杆21为阶梯杆，阶梯杆包括前后依次设置的大径杆段211和小径杆段212，大径杆段211与小径杆段212之间形成朝后的台阶面213，第二斥力盘22固定安装在大径杆段211上，第一传动杆11由后向前套设在小径杆段212上。作为本发明的另外一种实施例，在实施例1的基础上，第二传动杆可以为等径直杆。
为了方便第一传动杆11套装在第二传动杆21上，实施例1中，第一传动杆11的内孔前端为喇叭口111。当然，作为本发明的另外一种实施例，在实施例1的基础上，内孔前端可以不设置喇叭口，也可以通过将第二传动杆的后端设置为锥形段以方便第二传动杆与第 一传动杆之间进行套装。
实施例1中，放电电路中采用了预充电电容来为斥力线圈提供电压，作为本发明的另外一种实施例，在实施例1的基础上，可以采用电源代替预充电电容。
实施例1中，每一个电磁斥力单元仅在斥力盘的背向分闸方向的一侧设置前侧斥力线圈，此时，电磁斥力机构用于驱动开关设备分闸，合闸过程则可以通过永磁保持机构来实现，例如本发明背景技术中提到的一种机械快速开关即是利用双稳态永磁保持机构来实现合闸操作。
作为本发明的另外一种实施例，与实施例1不同之处在于，可以通过改变电磁斥力机构与开关本体动端3的相对位置，利用电磁斥力机构驱动开关设备合闸，此时，前侧斥力线圈作为合闸斥力线圈，传动杆向后移动驱动开关本体动端3，实现开关设备的合闸操作。
作为本发明的另外一种实施例，与实施例1不同之处在于，斥力盘的两侧均设置斥力线圈，即在斥力盘的后侧设置后侧斥力线圈，但是，为了能够让两个传动杆带动开关本体动端朝合闸方向移动，此时传动杆与开关本体动端之间应当连接，而上述实施例1中传动杆与开关本体动端之间则可以不连接，即传动杆与开关本体动端之间为接触配合。
实施例1中，传动杆与开关本体动端3之间为接触配合。作为本发明的另外一种实施例，与实施例1不同的是，传动杆与开关本体动端也可以间隔布置，即传动杆与开关本体动端之间存在间隔，此时只有传动杆移动一定距离与开关本体动端接触才能够带动开关本体动端移动，相当于传动杆以一个设定的初速度驱动开关本体动端移动。
实施例1中，第一传动杆11为空心杆，第二传动杆21的后端穿入第一传动杆11内，与实施例1不同的是，第一传动杆上开设有沿轴向延伸的导向槽，导向槽的截面为T形，第二传动杆的外周面上设有导向键，导向键的截面为T形，第一传动杆与第二传动杆并列布置，导向键与导向槽导向滑动配合，进而实现第一传动杆与第二传动杆的导向配合。
本发明中一种开关设备的实施例，开关设备可以为高速断路器或者其他高速机械开关，开关设备包括开关本体动端和电磁斥力机构，开关本体动端能够沿分合闸方向移动，在移动路径上具有合闸位置和分闸位置，分闸位置位于合闸位置的后方；电磁斥力机构具有冗余设计，具体结构与上述实施例中的电磁斥力机构相同，在此不再赘述。
以上所述，仅为本发明的较佳实施例，并不用以限制本发明，本发明的专利保护范围以权利要求书为准，凡是运用本发明的说明书及附图内容所作的等同结构变化，同理均应包含在本发明的保护范围内。
Claims (10)
- 一种具有冗余设计的电磁斥力机构，其特征在于，包括：第一电磁斥力单元(1)和第二电磁斥力单元(2)，第一电磁斥力单元(1)和第二电磁斥力单元(2)择一驱动开关设备或者两者同时驱动开关设备；第一电磁斥力单元(1)和第二电磁斥力单元(2)均包括：传动杆，轴线沿前后方向延伸，用于沿前后方向运动输出动力；斥力盘，固定在传动杆上；前侧斥力线圈，设置在斥力盘的前侧，连接有放电电路，用于在通电后与斥力盘之间产生斥力，使斥力盘带动传动杆向后移动；其中，第一电磁斥力单元(1)的传动杆、斥力盘和前侧斥力线圈分别为第一传动杆(11)、第一斥力盘(12)和第一前侧斥力线圈(14)，第二电磁斥力单元(2)的传动杆、斥力盘和前侧斥力线圈分别为第二传动杆(21)、第二斥力盘(22)和第二前侧斥力线圈(24)；第一电磁斥力单元(1)位于第二斥力盘(22)的后方，第一传动杆(11)为空心杆，第二传动杆(21)的后端穿入第一传动杆(11)中，第一传动杆(11)和第二传动杆(21)的后端分别具有用于顶推开关设备的开关本体动端(3)以使开关本体动端(3)动作的顶推部。
- 根据权利要求1所述的电磁斥力机构，其特征在于，第二传动杆(21)与第一传动杆(11)导向滑动配合。
- 根据权利要求1或2所述的电磁斥力机构，其特征在于，所述放电电路包括预充电电容和触发开关，第一电磁斥力单元(1)的预充电电容和第二电磁斥力单元(2)的预充电电容设定不同的充电电压。
- 根据权利要求1或2所述的电磁斥力机构，其特征在于，所述第二传动杆(21)包括前后依次设置的大径杆段(211)和小径杆段(212)，大径杆段(211)与小径杆段(212)之间形成朝后的台阶面(213)，第二斥力盘(22)固定安装在大径杆段(211)上，第二传动杆(21)的小径段穿入第一传动杆(11)中。
- 根据权利要求1或2所述的电磁斥力机构，其特征在于，空心杆的内孔前端为喇叭口(111)。
- 一种开关设备，包括开关本体动端(3)，能够沿分合闸方向移动；电磁斥力机构，用于驱动开关本体动端(3)移动；其特征在于，所述电磁斥力机构包括：第一电磁斥力单元(1)和第二电磁斥力单元(2)，第一电磁斥力单元(1)和第二电磁斥力单元(2)择一驱动开关设备或者两者同时驱动开关设备；第一电磁斥力单元(1)和第二电磁斥力单元(2)均包括：传动杆，轴线沿前后方向延伸，用于沿前后方向运动输出动力；斥力盘，固定在传动杆上；前侧斥力线圈，设置在斥力盘的前侧，连接有放电电路，用于在通电后与斥力盘之间产生斥力，使斥力盘带动传动杆向后移动；其中，第一电磁斥力单元(1)的传动杆、斥力盘和前侧斥力线圈分别为第一传动杆(11)、第一斥力盘(12)和第一前侧斥力线圈(14)，第二电磁斥力单元(2)的传动杆、斥力盘和前侧斥力线圈分别为第二传动杆(21)、第二斥力盘(22)和第二前侧斥力线圈(24)；第一电磁斥力单元(1)位于第二斥力盘(22)的后方，第一传动杆(11)为空心杆，第二传动杆(21)的后端穿入第一传动杆(11)中，第一传动杆(11)和第二传动杆(21)的后端分别具有用于顶推开关设备的开关本体动端(3)以使开关本体动端(3)动作的顶推部。
- 根据权利要求6所述的开关设备，其特征在于，第二传动杆(21)与第一传动杆(11)导向滑动配合。
- 根据权利要求6或7所述的开关设备，其特征在于，所述放电电路包括预充电电容和触发开关，第一电磁斥力单元(1)的预充电电容和第二电磁斥力单元(2)的预充电电容设定不同的充电电压。
- 根据权利要求6或7所述的开关设备，其特征在于，所述第二传动杆(21)包括前后依次设置的大径杆段(211)和小径杆段(212)，大径杆段(211)与小径杆段(212)之间形成朝后的台阶面(213)，第二斥力盘(22)固定安装在大径杆段(211)上，第二传动杆(21)的小径段穿入第一传动杆(11)中。
- 根据权利要求6或7所述的开关设备，其特征在于，空心杆的内孔前端为喇叭口(111)。
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| CN209804487U (zh) * | 2019-03-04 | 2019-12-17 | 上海电气集团股份有限公司 | 一种双电源切换装置 |
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