WO2021129738A1 - 分断器、分断器组件和接触器 - Google Patents

分断器、分断器组件和接触器 Download PDF

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Publication number
WO2021129738A1
WO2021129738A1 PCT/CN2020/139013 CN2020139013W WO2021129738A1 WO 2021129738 A1 WO2021129738 A1 WO 2021129738A1 CN 2020139013 W CN2020139013 W CN 2020139013W WO 2021129738 A1 WO2021129738 A1 WO 2021129738A1
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WO
WIPO (PCT)
Prior art keywords
arc
contact
static contact
piece
static
Prior art date
Application number
PCT/CN2020/139013
Other languages
English (en)
French (fr)
Inventor
王远钟
肖家忍
夏学东
Original Assignee
施耐德电器工业公司
王远钟
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 施耐德电器工业公司, 王远钟 filed Critical 施耐德电器工业公司
Priority to EP20908135.5A priority Critical patent/EP4064306A4/en
Priority to US17/788,004 priority patent/US20230026399A1/en
Publication of WO2021129738A1 publication Critical patent/WO2021129738A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the utility model relates to a breaker, in particular to a modular breaker.
  • the breaker is an important part of the contactor and the like, which includes a moving contact and a static contact, wherein the moving contact moves to contact and disconnect with the static contact to control the opening and closing of the circuit.
  • the existing breaker includes contact groups for multiple phases/poles in one housing, which makes it unfavorable to design the breaker flexibly according to needs and the damage of one contact will lead to the replacement of the entire breaker, increasing Reduce design and maintenance costs.
  • the existing breaker has a relatively large volume.
  • An embodiment according to the present disclosure provides a circuit breaker, which is only used to control one current path.
  • the breaker includes a set of contact components, an actuator and a housing.
  • the housing contains a set of contact assemblies and actuators.
  • a set of contact components includes: a first static contact with a first static contact part; a second static contact with a second static contact part; a movable contact with a first dynamic contact part located at both ends of the moving contact, respectively And the second moving contact part.
  • the actuating member is connected to the moving contact to actuate the moving contact in the first direction to move between the open position and the closed position.
  • the first moving contact part and the first static contact part are spaced apart and the second moving contact part and the second static contact part are spaced apart to close the one current path.
  • the first movable contact portion is in contact with the first static contact portion and the second movable contact portion is in contact with the second static contact portion to communicate the one current path.
  • the breaker only includes one moving contact and two static contacts, and the two static contacts are the first static contact and the second static contact, respectively.
  • the breaker further includes an arc extinguishing device, an arc running piece, and an arc starting piece.
  • the arc extinguishing device includes a plurality of arc extinguishing grids.
  • the arc running piece is configured to guide the arc from the first static contact and the second static contact to the arc extinguishing device.
  • the arc-igniting piece is configured to guide the arc from the moving contact to the arc-extinguishing device.
  • the actuating member extends to the outside of the housing in the first direction.
  • the first static contact and the second static contact respectively extend oppositely to the outside of the housing in a second direction perpendicular to the first direction.
  • the moving contact, the actuator, the arc extinguishing device, the arc running piece and the arc starting piece are completely contained in the housing.
  • a plurality of arc extinguishing grid pieces are arranged at intervals in the second direction, and extend into a sheet shape in the first direction and the third direction perpendicular to the second direction.
  • each of the first static contact and the second static contact has a first parallel section, a second parallel section, and a contact bending section connecting the first parallel section and the second parallel section,
  • the first parallel section extends in the second direction in the housing
  • the second parallel section extends out of the housing in the second direction.
  • the first static contact part and the second static contact part are respectively arranged on the first static contact of the first static contact. On the parallel section and on the first parallel section of the second static contact.
  • the breaker further includes a first magnetic resistance piece and a second magnetic resistance piece.
  • the first magnetic barrier is positioned between the first parallel section and the second parallel section of the first static contact in the first direction, and is close to the first parallel section of the first static contact.
  • the second magnetic barrier is positioned between the first parallel section and the second parallel section of the second static contact in the first direction, and is close to the first parallel section of the second static contact.
  • there are at least two arc extinguishing devices which include a first arc extinguishing device and a second arc extinguishing device.
  • There are at least two arc running pieces which include a first arc running piece and a second arc running piece.
  • the first arc running piece extends from its first arc running end part adjacent to the first static contact part through the first arc extinguishing device to its second arc running end part, and the second arc running piece is arranged adjacent to the second arc running end.
  • the third arc running end of the static contact part passes through the second arc extinguishing device and extends to the fourth arc running end.
  • the arc-striking piece is an integral piece, which has a first arc-striking segment extending in the first direction and a second arc-striking segment extending in the first direction, which are respectively located at both ends of the arc-striking piece.
  • the first arc-striking section is arranged between the first arc extinguishing device and the movable contact in the second direction
  • the second arc-striking segment is arranged between the second arc extinguishing device and the movable contact in the second direction.
  • the second arc running end of the first arc running piece and the first arc starting section are arranged on the opposite side of the first arc extinguishing device in the second direction.
  • the fourth arc running end and the second arc starting section of the second arc running piece are arranged on the opposite side of the first arc extinguishing device in the second direction.
  • the breaker further includes a first guide and a second guide for guiding the movement of the movable member in a first direction, and the movable contact is arranged on the first guide in the first direction. And the second guide.
  • Embodiments of the present disclosure also provide a breaker assembly, which includes a plurality of breakers as described above.
  • the actuators of the plurality of breakers are connected to each other to move in linkage.
  • Embodiments of the present disclosure also provide a contactor, which includes the above-mentioned breaker.
  • Fig. 1 shows a perspective view of a breaker according to an embodiment of the present disclosure
  • Fig. 2 shows an internal plan view of the breaker according to an embodiment of the present disclosure, wherein the second half shell of the breaker is not shown to show the internal configuration of the breaker;
  • Fig. 3 shows an enlarged view of part A-A of the dashed frame in Fig. 2;
  • Fig. 4 shows an enlarged view of the first parallel section of the first magneto-blocking piece and the first static contact in Fig. 2.
  • the breaker can be used in the contactor to control the connection and shutdown of the current path.
  • the contactor can be used to control the connection and shut-off of multiple current paths, for example, the connection and shut-off of three-phase current paths.
  • the breaker accommodates a plurality of contact assemblies (a contact assembly includes fixed contacts and movable contacts corresponding to each other and used to control a current path) for controlling a multi-phase current path in a common housing
  • the plurality of contact assemblies are at least not completely spaced apart. Therefore, when a component in one of the contact assemblies is damaged, the entire breaker needs to be replaced, resulting in an increase in maintenance and replacement costs.
  • there is an under-utilized space in the housing of the breaker used to control the multiphase current Therefore, the structure of the breaker is not compact and the space utilization rate is low.
  • At least one embodiment of the present disclosure provides a circuit breaker, which is only used to control one current path.
  • the breaker includes a set of contact components, an actuator and a housing.
  • the set of contact assemblies includes a first static contact having a first static contact part, a second static contact having a second static contact part, and a first dynamic contact part and a second dynamic contact part respectively located at both ends thereof
  • the moving contacts The actuating member is connected to the moving contact to actuate the moving contact in the first direction to move between the open position and the closed position. In the open position, the first moving contact part and the first static contact part are spaced apart and the second moving contact part and the second static contact part are spaced apart to close the one current path. In the closed position, the first movable contact portion is in contact with the first static contact portion and the second movable contact portion is in contact with the second static contact portion to communicate the one current path.
  • the housing contains the set of contact assemblies and the actuating member.
  • the breaker is only used to control one current path.
  • a single housing only accommodates a set of contact components, for example, two static contacts and one moving contact corresponding to the two static contacts. Therefore, when a component is damaged, only one breaker for controlling only one current path needs to be replaced, and it is not necessary to replace a breaker with more parts for controlling multiple current paths, thereby reducing the cost.
  • the breaker is modularized, and the modular breaker can be flexibly combined to design the breaker assembly or contactor as required.
  • Fig. 1 shows a perspective view of a breaker according to the present disclosure, which shows the appearance of the breaker.
  • Fig. 2 shows an internal plan view of a breaker according to an embodiment of the present disclosure.
  • the breaker includes a housing 190, a set of contact assemblies, an actuator 130, an arc extinguishing device 140, 140', an arc running piece 180, 180', an arc leading piece 150, and a magnetic resistance piece 160, 160'.
  • the housing 190 includes a first half-shell 191 and a second half-shell 192.
  • the housing 190 is used for accommodating a set of contact components, the actuator 130, the arc extinguishing device 140, 140', the arc running piece 180, 180', the arc starting piece 150 and the magnetic resistance piece 160, 160'.
  • Figure 2 shows an interior plan view of the breaker with the second half-shell 192 removed to show the interior of the breaker. 2, the first direction X (up and down direction in the figure), the second direction Y (left and right direction in the figure), and the third direction Z (the opposite direction perpendicular to the paper in the figure) can be defined, which are mutually exclusive. vertical.
  • a set of contact components includes a first static contact 110, a second static contact 110', and a moving contact 120.
  • the first static contact 110 has a first static contact portion 114 (or, a first static contact)
  • the second static contact 110' has a second static contact portion 115 (or, a second static contact)
  • the movable contact 120 has a first movable contact portion 121 corresponding to the first static contact portion 114 and a second movable contact portion 122 corresponding to the second static contact portion 115 (or, the first movable contact and the second movable Contacts).
  • first static contact portion 114, the second static contact portion 115, the first dynamic contact portion 121, and the second dynamic contact portion 122 are all a flat surface, but the present disclosure is not limited thereto.
  • the first static contact portion 114 and the first dynamic contact portion 121 constitute a first group of contact portions
  • the second static contact portion 115 and the second dynamic contact portion 122 constitute a second group of contact portions.
  • the first static contact portion 114 and the first dynamic contact portion 121 face each other in the first direction X
  • the second static contact portion 115 and the second dynamic contact portion 122 face each other in the first direction X.
  • the first static contact 110 and the second static contact 110' are J-shaped, which generally extend in the second direction Y, and a portion of each of the first static contact 110 and the second static contact 110' is in the second direction
  • the Y extends oppositely from the housing 190, thereby allowing an external circuit to be electrically connected to the two static contacts 110, 110'.
  • the movable contact 120 extends in the second direction Y, and the first movable contact portion 121 and the second movable contact portion 122 are located at both ends of the movable contact 120.
  • the moving contact 120 may include a moving contact body and an iron cap.
  • the actuating member 130 passes through the opening in the middle of the movable contact 120 and is fixedly connected to the movable contact 120, which moves in the first direction X to actuate the movable contact 120 in the open position in the first direction X (for example, See Figure 2) to move between the closed position.
  • a part of the actuating member 130 protrudes upward from the housing 190 in the first direction X.
  • the breaker also includes guides 171 and 172, which include a first guide 171 and a second guide 172, which are arranged at a distance in the first direction X.
  • the second guide 172 is disposed at an opening of the housing 190, and the actuating member 130 extends out of the housing 190 through the opening.
  • the first guide 171 is disposed under the movable contact 120. As shown in FIG. The movable contact 120 is positioned between the first guide 171 and the second guide 172.
  • the first movable contact portion 121 of the movable contact 120 contacts the first static contact portion 114 of the first static contact 110 to be electrically connected, and the second movable contact portion of the movable contact 120 122 is in contact with the second movable contact portion 122 of the second stationary contact 110' to be electrically connected, thereby communicating a current path from the first stationary contact 110 to the second stationary contact 110' via the movable contact 120.
  • the first movable contact portion 121 of the movable contact 120 is spaced apart from the first static contact portion 114 of the first static contact 110 for insulation, and the second movable contact portion of the movable contact 120 122 and the second static contact portion 115 of the second static contact 110' are spaced apart for insulation.
  • the current path from the first static contact 110 to the second static contact 110' via the movable contact 120 is turned off.
  • arc extinguishing devices 140, 140', arc-striking pieces 150, and arc-running pieces 180, 180' are provided to guide and eliminate arcs.
  • the breaker becomes compact, for example, fully occupies the space volume, and the arc extinguishing performance is improved, for example, it has a reduced arc dead time and improved blowing Arc performance and reduced arc zero crossing times.
  • the arc extinguishing device 140, 140' includes a first arc extinguishing device 140 and a second arc extinguishing device 140', which are respectively used for the first group of contact parts and the second group of contact parts.
  • the arc running pieces 180, 180' include a first arc running piece 180 and a second arc running piece 180', which are respectively used for the first group of contact parts and the second group of contact parts.
  • the magnetic resistance sheets 160, 160' include a first magnetic resistance sheet 160 and a second magnetic resistance sheet 160', which are respectively used for the first group of contact portions and the second group of contact portions.
  • the actuating member 130 and the arc-igniting piece 150 are shared by the above-mentioned first group of contact parts and the second group of contact parts.
  • first static contact 110 and the second static contact 110', the moving contact 120, the first arc running piece 180 and the second arc running piece 180', the arc striking piece 150, the first arc extinguishing device 140 and the second arc extinguishing device 140 ′, and the first and second magnetic barrier pieces 160 and 160 ′ are arranged in a mirror image with respect to the axis in the first direction X.
  • the arc-igniting piece 150, the movable contact 120 and the actuator 130 are formed to be axisymmetric, but the present disclosure is not limited thereto.
  • first static contact 110 and the second static contact 110', the first arc running piece 180 and the second arc running piece 180', and the first arc extinguishing device 140 and the second arc extinguishing device 140' may be substantially the same of. Therefore, only the first static contact 110, the first arc running piece 180, the first arc extinguishing device 140, and the first magnetic resistance piece 160 will be described in detail below.
  • the description of an arc extinguishing device 140 and the first magnetic barrier piece 160 can also be correspondingly applied to the second static contact 110', the second arc running piece 180', the second arc extinguishing device 140' and the second magnetic barrier piece respectively. 160'.
  • the first arc extinguishing device 140 includes a plurality of arc extinguishing grids 141.
  • the first arc extinguishing device 140 includes 6 arc extinguishing grid pieces 141, which can also be other numbers, such as 5 or less or 7 or more.
  • the plurality of arc extinguishing grid pieces 141 are arranged at intervals in the second direction Y, and extend into a sheet shape in the first direction X and the third direction Z. Due to the orientation of the first arc extinguishing device 140, the volume of the breaker is reduced and the arrangement of the components of the breaker is more compact.
  • the second arc extinguishing device 140' includes a plurality of arc extinguishing grids arranged at intervals in the second direction Y.
  • the first arc running piece 180 is used to guide the arc from the first static contact 110 to the first arc extinguishing device 140.
  • the first arc-running piece 180 has a rounded L-shape, which has a first arm portion 181 with a first arc-running end extending in the second direction Y, and a belt extending in the first direction X.
  • the first arc running end is disposed adjacent to the first static contact 110.
  • the first arc running end is welded to the free end of the first static contact 110 close to the first static contact portion 114. Therefore, the performance of the pilot arc of the arc running piece can be enhanced.
  • the first arc running piece 180 extends rightward and downward from the first arc running end in the first direction X and the second direction Y through the first arc extinguishing device 140 to the second arc running end. Since the first arc running piece 180 passes through the first arc extinguishing device 140, the first arc running piece 180 can guide the arc to the first arc extinguishing device 140 faster and more effectively, thereby improving the arc extinguishing of the breaker. performance.
  • the first arc running end is located on the first side (ie, the inner side) of the first arc extinguishing device 140, and the second arc running end is located on the opposite side of the first arc extinguishing device 140 from the first side.
  • the second side ie, the outside).
  • the arc extinguishing grid 141 of the first arc extinguishing device 140 is provided with a gap.
  • the first arm portion 181 and the curved connecting portion 183 pass through the gaps of the plurality of arc extinguishing grid pieces 141 of the first arc extinguishing device 140, so that the first arc running piece 180 and the plurality of arc extinguishing grid pieces 141 are in the third direction Z
  • the projections overlap at least partially.
  • the second arc running piece 180' is used to guide the arc from the second static contact 110' to the second arc extinguishing device 140', and has a third arc running end and a fourth arc running end.
  • the third arc running end is arranged adjacent to the second static contact 110'.
  • the second arc running piece 180' extends from the third arc running end to the left and downward in the first direction X and the second direction Y through the second arc extinguishing device 140' to the fourth arc running end.
  • the third arc running end is located on the third side (ie, the inner side) of the second arc extinguishing device 140'
  • the fourth arc running end is located on the third side of the second arc extinguishing device 140' Opposite fourth side (ie, outside).
  • the second arc running piece 180' passes through the multiple arc extinguishing grid pieces 141 of the second arc extinguishing device 140', so that the projection of the second arc running piece 180' and the multiple arc extinguishing grid pieces 141 in the third direction Z is at least Partially overlapped. Therefore, the arc extinguishing performance of the circuit breaker is improved.
  • the arc-striking piece 150 is substantially M-shaped and has a first arc-striking section 151 and a second arc-striking section 152 that both extend in the first direction X.
  • the first arc-striking section 151 is arranged between the movable contact 120 and the first arc extinguishing device 140 in the second direction Y, and the movable contact 120 guides the arc to the first arc extinguishing device 140.
  • the second arc-igniting section 152 is arranged between the movable contact 120 and the second arc extinguishing device 140' in the second direction Y, so as to guide the arc from the movable contact 120 to the second arc extinguishing device 140'.
  • An opening is provided in the arc-igniting piece 150 so that the movable contact 120 passes through the opening to move.
  • the arc-igniting piece 150 is an integral piece.
  • the first static contact 110 has a first parallel section 111, a second parallel section 112, and a contact bending section 113 connecting the first parallel section 111 and the second parallel section 112.
  • the first parallel section 111 is in the housing 190
  • the inner portion extends in the second direction Y
  • the second parallel section 112 extends out of the housing 190 in the second direction Y
  • the first static contact portion 114 is disposed on the first parallel section 111 of the first static contact 110.
  • the second static contact 110' has another first parallel section, another second row section, and another contact bending section connecting the first parallel section and the second parallel section.
  • the second static contact portion 115 is provided on the first parallel section of the second static contact 110'.
  • the first magnetic resistance sheet 160 is positioned between the first parallel section 111 and the second parallel section 112 of the first static contact 110 in the first direction X. As shown in FIG. The first magnetic barrier 160 extends parallel to the first parallel section 111 of the first static contact 110.
  • the second magnetic resistance sheet 160' is positioned in the second direction Y between the first parallel section and the second parallel section of the second static contact 110'.
  • the second magnetic resistance piece 160' extends parallel to the first parallel section of the second static contact 110'.
  • FIG. 3 shows an enlarged view of the part A-A in the dashed frame in FIG. 2
  • FIG. 4 shows an enlarged view of the first parallel section 111 of the first magnetoblock 160 and the first static contact 110 in FIG. 2.
  • the shortest distance L1 between the movable contact 120 and the first arc pilot segment 151 is substantially equal to the shortest distance L2 between the first arc pilot segment 151 and the arc extinguishing grid 141 .
  • the first moving contact part 121, the first static contact part 114, the second moving contact 120 part, and the second static contact 110' part are all a flat surface.
  • the distance L3 between the first arc running piece 180 and the arc guiding piece 150 in the first direction X is the shortest. In the first direction X, the distance L3 between the first arc running piece 180 and the arc guiding piece 150 is approximately equal to when the movable contact 120 is in the open position, the first movable contact portion 121 and the first The distance between the static contact parts 114 is L4.
  • the first movable contact portion 121 is closer to the first static contact 110 than the arc-igniting piece 150 in the first direction X.
  • the first movable contact is The shortest distance L5 in the first direction X between the portion 121 and the arc-striking piece 150 is substantially equal to the shortest distance L1 in the second direction Y between the movable contact 120 and the first arc-striking segment 151.
  • approximately means that the distance between the two pairs of components is equal to each other, but a small error is allowed, so that the two pairs of components have a balanced arc ignition performance.
  • the distance L6 that is spaced apart from the first parallel section 111 of the first static contact 110 and the first magnetic resistance sheet 160 in the first direction X is less than 0.5 mm.
  • An embodiment according to the present disclosure also provides a breaker assembly including a plurality of breakers.
  • a breaker assembly including a plurality of breakers.
  • the multiple breakers are respectively used to control current paths of multiple phase currents, for example, used to control three-phase current paths and two-phase current paths.
  • the actuators 130 of the plurality of breakers are connected to each other to move in linkage.
  • each breaker Since each breaker is only used to control one current path, it is convenient to replace the breaker and combine the breaker to flexibly design the breaker components, reduce maintenance costs and modularize the breaker.
  • An embodiment according to the present disclosure also provides a contactor, which includes a breaker, for example, a plurality of breakers.
  • the circuit breaker is, for example, the circuit breaker described above.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

一种分断器，其仅用于控制一个电流路径。所述分断器包括一组触头组件、致动件（130）和壳体（190）。壳体（190），其容纳一组触头组件和致动件（130）。一组触头组件包括：第一静触头（110），具有第一静接触部分（114）；第二静触头（110'），具有第二静接触部分（115）；动触头（120），具有分别位于动触头（120）两端的第一动接触部分（121）和第二动接触部分（122）。致动件（130）连接到动触头（120），以在第一方向上致动动触头（120）在打开位置和闭合位置之间移动。在打开位置，第一动接触部分（121）和第一静接触部分（114）间隔开并且第二动接触部分（122）和第二静接触部分（115）间隔开，以关断该一个电流路径。在闭合位置，第一动接触部分（121）和第一静接触部分（114）接触并且第二动接触部分（122）和第二静接触部分（115）接触，以连通该一个电流路径，以及一种包括该分断器的分断器组件和接触器。

Description

分断器、分断器组件和接触器
相关申请的交叉引用
本申请要求于2019年12月24日向中国国家知识产权局提交的中国申请CN201922351226.7的优先权。
技术领域
本实用新型涉及一种分断器，特别地涉及一种模块化的分断器。
背景技术
分断器是接触器等中的重要部件，其包括动触头和静触头，其中，动触头移动以与静触头接触和断开，以控制电路的开通和关断。
然而，现有的分断器在一个壳体中包括用于多个相位/极的触头组，使得不利于根据需要灵活地设计分断器并且一个触头的损坏将导致整个分断器的更换，增加了设计和维护成本。此外，现有的分断器体积较大。
发明内容
根据本公开的实施例提供了一种分断器，其仅用于控制一个电流路径。所述分断器包括一组触头组件、致动件和壳体。壳体，其容纳一组触头组件和致动件。一组触头组件包括：第一静触头，具有第一静接触部分；第二静触头，具有第二静接触部分；动触头，具有分别位于动触 头两端的第一动接触部分和第二动接触部分。致动件连接到动触头，以在第一方向上致动动触头在打开位置和闭合位置之间移动。在打开位置，第一动接触部分和第一静接触部分间隔开并且第二动接触部分和第二静接触部分间隔开，以关断该一个电流路径。在闭合位置，第一动接触部分和第一静接触部分接触并且第二动接触部分和第二静接触部分接触，以连通该一个电流路径。
例如，在一些实施例中，分断器仅包括一个动触头和两个静触头，所属两个静触头分别为第一静触头和第二静触头。
例如，在一些实施例中，分断器还包括灭弧装置、跑弧片和引弧片。灭弧装置包括多个灭弧栅片。跑弧片配置成从第一静触头和第二静触头引导电弧至灭弧装置。引弧片配置成从动触头引导电弧至灭弧装置。致动件在第一方向上延伸到壳体的外部。第一静触头和第二静触头分别相反地在垂直于第一方向的第二方向上延伸到壳体的外部。动触头、致动件、灭弧装置、跑弧片和引弧片完全地容纳在壳体中。
例如，在一些实施例中，多个灭弧栅片在第二方向上彼此间隔排列，并且在垂直于第二方向的第一方向和第三方向上延伸成片状。
例如，在一些实施例中，第一静触头和第二静触头中的每一个具有第一平行段、第二平行段和连接第一平行段和第二平行段的触头弯曲段，第一平行段在壳体内在第二方向上延伸，第二平行段在第二方向上延伸出壳体，第一静接触部分和第二静接触部分分别设置在第一静触头的第一平行段上和第二静触头的第一平行段上。
例如，在一些实施例中，分断器还包括第一阻磁片和第二阻 磁片。第一阻磁片在第一方向上定位于第一静触头的第一平行段和第二平行段之间，并且靠近第一静触头的第一平行段。第二阻磁片在第一方向上定位于第二静触头的第一平行段和第二平行段之间，并且靠近第二静触头的第一平行段。
例如，在一些实施例中，灭弧装置为至少两个，其包括第一灭弧装置和第二灭弧装置。跑弧片为至少两个，其包括第一跑弧片和第二跑弧片。第一跑弧片从设置成邻近第一静接触部分的其第一跑弧端部穿过第一灭弧装置延伸到其第二跑弧端部，第二跑弧片从设置成邻近第二静接触部分的其第三跑弧端部穿过第二灭弧装置延伸到其第四跑弧端部。引弧片为一体件，其具有分别位于引弧片两端的在第一方向上延伸的第一引弧段和在第一方向上延伸的第二引弧段。第一引弧段在第二方向上设置在第一灭弧装置和动触头之间，第二引弧段在第二方向上设置在第二灭弧装置和动触头之间。第一跑弧片的第二跑弧端部和第一引弧段在第二方向上设置在第一灭弧装置的相反侧。第二跑弧片的第四跑弧端部和第二引弧段在第二方向上设置在第一灭弧装置的相反侧。
例如，在一些实施例中，分断器还包括第一引导件和第二引导件，用于引导致动件在第一方向上的移动，动触头在第一方向上设置在第一引导件和第二引导件之间。
本公开的实施例还提供一种分断器组件，其包括如上所述的多个分断器。多个分断器的致动件彼此连接以联动地运动。
本公开的实施例还提供一种接触器，其包括如上所述的分断器。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作是对保护范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1示出了根据本公开的一实施例的分断器的立体图；
图2示出了根据本公开的一实施例的分断器的内部平面视图，其中未示出分断器的第二半壳体以示出分断器的内部配置；
图3示出了图2中虚线框A-A部分的放大视图；
图4示出了图2中第一阻磁片和第一静触头的第一平行段处的放大视图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性， 而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“上”、“下”、“左”、“右”等仅用于表示相对准置关系，当被描述对象的绝对准置改变后，则该相对准置关系也可能相应地改变。
分断器可以在接触器中使用，以控制电流路径的连通和关断。接触器可以用于控制多个电流路径的连通和关断，例如，三相电流路径的连通和关断。通常，分断器将用于控制多相电流路径的多个触头组件(一个触头组件包括相互对应、且用于控制一个电流路径的静触头和动触头)容纳于一个共同的壳体中，并且，例如，多个触头组件至少不完全间隔开。因此，当其中一个触头组件中的部件损坏时，需要更换整个分断器，造成维护和更换成本的增加。此外，通常，用于控制多相电流的分断器的壳体中存在没有被充分利用的空间，因此，分断器的结构不紧凑，空间利用率低。
本公开的至少一实施例提供一种分断器，其仅用于控制一个电流路径。该分断器包括一组触头组件、致动件和壳体。该一组触头组件包括具有第一静接触部分的第一静触头、具有第二静接触部分的第二静触头和具有分别位于其两端的第一动接触部分和第二动接触部分的动触头。该致动件连接到动触头，以在第一方向上致动动触头在打开位置和闭合位置之间移动。在打开位置，第一动接触部分和第一静接触部分间隔开并且第二动接触部分和第二静接触部分间隔开，以关断该一个电流路径。在闭合位置，第一动接触部分和第一静接触部分接触并且第二动接触部分和第 二静接触部分接触，以连通该一个电流路径。该壳体容纳该一组触头组件和该致动件。
在本公开的实施例中，分断器仅用于控制一个电流路径。单独的壳体仅容纳一组触头组件，例如，两个静触头和与两个静触头对应的一个动触头。因此，当部件发生损坏时，仅需要更换用于控制仅一个电流路径的一个分断器，而不必需更换用于控制多个电流路径的具有更多部件的分断器，从而降低了成本。此外，分断器被模块化，可以将模块化的分断器根据需要灵活组合进行分断器组件或接触器的设计。
图1示出了根据本公开的分断器的立体图，其示出了分断器的外观。图2示出了根据本公开的一实施例的分断器的内部平面视图。如图1、图2所示，分断器包括壳体190、一组触头组件、致动件130、灭弧装置140,140’、跑弧片180,180’、引弧片150和阻磁片160,160’。
具体地，壳体190包括第一半壳体191和第二半壳体192。该壳体190用于容纳一组触头组件、致动件130、灭弧装置140,140’、跑弧片180,180’、引弧片150和阻磁片160,160’。图2示出了分断器的内部平视图，其中第二半壳体192被移除以示出分断器的内部。参照图2，可以限定第一方向X(图中的上下方向)、第二方向Y(图中的左右方向)和第三方向Z(图中垂直于纸面的反向)，其两两彼此垂直。
在一示例中，一组触头组件包括一个第一静触头110、一个第二静触头110’和一个动触头120。第一静触头110具有第一静接触部分114(或，第一静触点)，第二静触头110’具有第二静接触部分115(或，第二静触点)，动触头120具有分别位于其两端的对应于第一静接触部分114 的第一动接触部分121和对应于第二静接触部分115的第二动接触部分122(或，第一动触点和第二动触点)。例如，该第一静接触部分114、第二静接触部分115、第一动接触部分121和第二动接触部分122均为一平坦的表面，但本公开不限于此。第一静接触部分114和第一动接触部分121构成第一组接触部分，第二静接触部分115和第二动接触部分122构成第二组接触部分。例如，第一静接触部分114与第一动接触部分121在第一方向X上彼此面对，第二静接触部分115和第二动接触部分122在第一方向X上彼此面对。
第一静触头110和第二静触头110’为J形，其大体在第二方向Y上延伸，并且第一静触头110和第二静触头110’各自的一部分在第二方向Y上相反地伸出壳体190，从而允许将外接电路电连接到两个静触头110,110’。
动触头120在第二方向Y上延伸，第一动接触部分121和第二动接触部分122位于动触头120的两端。例如，动触头120可以包括动触头主体和铁帽。
致动件130穿过动触头120中间的开口而固定地连接到动触头120，其在第一方向X上移动以在第一方向X上致动动触头120在打开位置(例如，参见图2)和闭合位置之间移动。致动件130的一部分在第一方向X上向上伸出壳体190。
分断器还包括引导件171,172，其包括第一引导件171和第二引导件172，其在第一方向X上间隔开一距离设置。第二引导件172设置在壳体190的一开口处，致动件130穿过该开口延伸出壳体190。第一引 导件171设置在动触头120的下方。动触头120被定位于第一引导件171和第二引导件172之间。
当动触头120处于闭合位置时，动触头120的第一动接触部分121与第一静触头110的第一静接触部分114接触以电连接，动触头120的第二动接触部分122和第二静触头110’的第二动接触部分122接触以电连接，从而连通从第一静触头110经由动触头120到第二静触头110’的电流路径。当动触头120处于打开位置时，动触头120的第一动接触部分121与第一静触头110的第一静接触部分114间隔开以绝缘，动触头120的第二动接触部分122和第二静触头110’的第二静接触部分115间隔开以绝缘。从第一静触头110经由动触头120到第二静触头110’的电流路径被关断。
在动触头120从闭合位置移动到打开位置时，可能在第一动接触部分121与第一静接触部分114以及第二动接触部分122与第二静接触部分115之间产生电弧。因此，需要设置用于引导和消除电弧的装置以将所产生的电弧引导离开静触头110,110’和动触头120并消除这些电弧，以防止对诸如静触头110,110’和动触头120的部件的烧蚀和安全隐患。
在本实施例中，设置灭弧装置140,140’、引弧片150和跑弧片180,180’来引导和消除电弧。通过各个部件的合理设置(例如，位置、尺寸、形状等)，分断器变得紧凑，例如，充分占用了空间体积，并且灭弧性能得到提高，例如，具有减少的电弧停滞时间、提高的吹弧性能和减少的电弧过零次数。
在一示例中，灭弧装置140,140’包括第一灭弧装置140和第二灭弧装置140’，分别用于上述第一组接触部分和第二组接触部分。跑弧 片180,180’包括第一跑弧片180和第二跑弧片180’，分别用于上述第一组接触部分和第二组接触部分。阻磁片160,160’包括第一阻磁片160和第二阻磁片160’，分别用于上述第一组接触部分和第二组接触部分。致动件130、引弧片150为上述第一组接触部分和第二组接触部分所共用。
在一示例中，第一静触头110与第二静触头110’、动触头120、第一跑弧片180与第二跑弧片180’、引弧片150、第一灭弧装置140与第二灭弧装置140’以及第一阻磁片160和第二阻磁片160’相对于在第一方向X上的轴线镜像布置。并且，引弧片150、动触头120和致动件130成形为轴对称的，但本公开不限于此。
例如，第一静触头110与第二静触头110’、第一跑弧片180与第二跑弧片180’和第一灭弧装置140与第二灭弧装置140’可以为基本相同的。因此，下面仅详细描述第一静触头110、第一跑弧片180、第一灭弧装置140和第一阻磁片160，对于第一静触头110、第一跑弧片180、第一灭弧装置140和第一阻磁片160的描述也可以分别对应地应用于第二静触头110’、第二跑弧片180’、第二灭弧装置140’和第二阻磁片160’。
如图2所示，第一灭弧装置140包括多个灭弧栅片141。在本示例中，第一灭弧装置140包括6个灭弧栅片141，其也可以为其他数量，例如5个以下或7个以上。该多个灭弧栅片141在第二方向Y上彼此间隔排列，并且在第一方向X和第三方向Z上延伸成片状。由于第一灭弧装置140这样的取向，减小了分断器的体积并且使分断器的各部件的布置更加紧凑。
类似地，第二灭弧装置140’包括在第二方向Y上彼此间隔 排列的多个灭弧栅片。
第一跑弧片180用于将电弧从第一静触头110引导到第一灭弧装置140。例如，第一跑弧片180为圆化的L形形状，其具有在第二方向Y上延伸的带有第一跑弧端部的第一臂部分181、在第一方向X上延伸的带有第二跑弧端部的第二臂部分182和连接第一臂部分和第二臂部分的弯曲连接部分183。
第一跑弧端部邻近第一静触头110设置。例如，第一跑弧端部焊接到第一静触头110的靠近第一静接触部分114的自由端。因此，可以增强跑弧片的引导电弧的性能。
第一跑弧片180从该第一跑弧端部在第一方向X和第二方向Y上向右且向下延伸穿过第一灭弧装置140到第二跑弧端部。由于第一跑弧片180穿过第一灭弧装置140，因此，第一跑弧片180可以更快、更有效地将电弧引导到第一灭弧装置140中，从而提高分断器的灭弧性能。在第二方向Y上，第一跑弧端部位于第一灭弧装置140的第一侧(即，内侧)，第二跑弧端部位于第一灭弧装置140的与第一侧相反的第二侧(即，外侧)。
例如，第一灭弧装置140的灭弧栅片141中设置有缺口。第一臂部分181和弯曲连接部分183穿过第一灭弧装置140的多个灭弧栅片141的缺口，使得第一跑弧片180与多个灭弧栅片141在第三方向Z上的投影至少部分重叠。
类似地，第二跑弧片180’用于将电弧从第二静触头110’引导到第二灭弧装置140’，并且具有第三跑弧端部和第四跑弧端部。第三跑弧端部邻近第二静触头110’设置。第二跑弧片180’从该第三跑弧端部在 第一方向X和第二方向Y上向左且向下延伸穿过第二灭弧装置140’到第四跑弧端部。在第二方向Y上，第三跑弧端部位于第二灭弧装置140’的第三侧(即，内侧)，第四跑弧端部位于第二灭弧装置140’的与第三侧相反的第四侧(即，外侧)。第二跑弧片180’穿过第二灭弧装置140’的多个灭弧栅片141，使得第二跑弧片180’与多个灭弧栅片141在第三方向Z上的投影至少部分重叠。因此，分断器的灭弧性能被提高。
引弧片150为大致M形，并且具有均在第一方向X上延伸的第一引弧段151和第二引弧段152。第一引弧段151在第二方向Y上设置在动触头120和第一灭弧装置140之间，以从动触头120引导电弧至第一灭弧装置140。第二引弧段152在第二方向Y上设置在动触头120和第二灭弧装置140’之间，以从动触头120引导电弧至第二灭弧装置140’。引弧片150中设置开口，使得动触头120从该开口穿过而移动。例如，引弧片150为一体件。
第一静触头110具有第一平行段111、第二平行段112和连接该第一平行段111和该第二平行段112的触头弯曲段113，该第一平行段111在壳体190内在第二方向Y上延伸，该第二平行段112在第二方向Y上延伸出壳体190，第一静接触部分114设置在第一静触头110的第一平行段111上。
类似地，第二静触头110’具有另一第一平行段、另一第二行段和连接该第一平行段和该第二平行段的另一触头弯曲段。第二静接触部分115设置在第二静触头110’的第一平行段上。
第一阻磁片160在第一方向X上定位于第一静触头110的第 一平行段111和第二平行段112之间。第一阻磁片160平行于第一静触头110的第一平行段111延伸。
类似地，第二阻磁片160’在第二方向Y上定位于第二静触头110’的第一平行段和第二平行段之间。第二阻磁片160’平行于第二静触头110’的第一平行段延伸。
适当地设置各个部件的位置，以得到良好的灭弧性能。
图3示出了图2中虚线框A-A部分的放大视图，图4示出了图2中第一阻磁片160和第一静触头110的第一平行段111处的放大视图。
参见图3，例如，在第二方向Y上，动触头120与第一引弧段151之间的最短距离L1大致等于第一引弧段151与灭弧栅片141之间的最短距离L2。
例如，第一动接触部分121、第一静接触部分114、第二动触头120部分和第二静触头110’部分均为一平坦表面。第一跑弧片180与引弧片150在第一方向X上的距离L3最短。在第一方向X上，第一跑弧片180与引弧片150之间的该距离L3大致等于当动触头120位于所述打开位置时所述第一动接触部分121与所述第一静接触部分114之间的距离L4。
例如，当动触头120位于打开位置时第一动接触部分121在第一方向X上比引弧片150更靠近第一静触头110，当动触头120位于打开位置时第一动接触部分121与引弧片150之间的在第一方向X上的最短距离L5大致等于动触头120与第一引弧段151之间的在第二方向Y上的最短距离L1。
这里，“大致”是指两对部件的距离彼此相等，但允许有小的 误差，以使得两对部件具有彼此平衡的引弧性能。
参见图4，例如，第一阻磁片160与第一静触头110的第一平行段111在第一方向X上间隔开的距离L6小于0.5mm。
根据本公开的实施例还提供一种分断器组件，其包括多个分断器。例如，如上所述的多个分断器。该多个分断器分别用于控制多个相位电流的电流路径，例如用于控制三相电流路径、两相电流路径。例如，该多个分断器的致动件130彼此连接以联动地运动。
由于每个分断器只用于控制一个电流路径，因此，可以方便地更换分断器、对分断器进行组合以灵活设计分断器组件，降低维护成本和模块化分断器。
根据本公开的实施例还提供一种接触器，其包括分断器，例如多个分断器。分断器例如如上所述的分断器。
本公开的范围并非由上述描述的实施方式来限定，而是由所附的权利要求书及其等同范围来限定。

Claims (10)

  1. 一种分断器，其特征在于，所述分断器仅用于控制一个电流路径并且包括：
    一组触头组件，包括：
    第一静触头，具有第一静接触部分；
    第二静触头，具有第二静接触部分；以及
    动触头，具有分别位于所述动触头两端的第一动接触部分和第二动接触部分；
    致动件，其连接到所述动触头，以在第一方向上致动所述动触头在打开位置和闭合位置之间移动，在所述打开位置，所述第一动接触部分和所述第一静接触部分间隔开并且所述第二动接触部分和所述第二静接触部分间隔开，以关断所述一个电流路径，在所述闭合位置，所述第一动接触部分和所述第一静接触部分接触并且所述第二动接触部分和所述第二静接触部分接触，以连通所述一个电流路径；以及
    壳体，其容纳所述一组触头组件和所述致动件。
  2. 根据权利要求1所述的分断器，其特征在于，
    所述分断器仅包括一个所述动触头和两个静触头，所述两个静触头分别为所述第一静触头和所述第二静触头。
  3. 根据权利要求1所述的分断器，其特征在于，还包括：
    灭弧装置，其包括多个灭弧栅片；
    跑弧片，配置成从所述第一静触头和所述第二静触头引导电弧至所述灭弧装置；
    引弧片，配置成从所述动触头引导电弧至所述灭弧装置，
    其中，所述致动件在所述第一方向上延伸到所述壳体的外部，
    所述第一静触头和第二静触头分别相反地在垂直于所述第一方向的第二方向上延伸到所述壳体的外部，并且
    所述动触头、所述致动件、所述灭弧装置、所述跑弧片和所述引弧片完全地容纳在所述壳体中。
  4. 根据权利要求3所述的分断器，其特征在于，
    所述多个灭弧栅片在所述第二方向上彼此间隔排列，并且在垂直于所述第二方向的所述第一方向和第三方向上延伸成片状。
  5. 根据权利要求3所述的分断器，其特征在于，
    所述第一静触头和第二静触头中的每一个具有第一平行段、第二平行段和连接所述第一平行段和所述第二平行段的触头弯曲段，所述第一平行段在所述壳体内在所述第二方向上延伸，所述第二平行段在所述第二方向上延伸出所述壳体，所述第一静接触部分和所述第二静接触部分分别设置在所述第一静触头的第一平行段上和所述第二静触头的第一平行段上。
  6. 根据权利要求5所述的分断器，其特征在于，还包括：
    第一阻磁片和第二阻磁片，
    其中，所述第一阻磁片在所述第一方向上定位于所述第一静触头的第一平行段和第二平行段之间，并且靠近所述第一静触头的第一平行段，
    其中，所述第二阻磁片在所述第一方向上定位于所述第二静触头的第一平行段和第二平行段之间，并且靠近所述第二静触头的第一平行段。
  7. 根据权利要求3所述的分断器，其特征在于，
    所述灭弧装置为至少两个，其包括第一灭弧装置和第二灭弧装置，
    所述跑弧片为至少两个，其包括第一跑弧片和第二跑弧片，所述第一跑弧片从设置成邻近所述第一静接触部分的其第一跑弧端部穿过所述第一灭弧装置延伸到其第二跑弧端部，所述第二跑弧片从设置成邻近所述第二静接触部分的其第三跑弧端部穿过所述第二灭弧装置延伸到其第四跑弧端部；
    所述引弧片为一体件，其具有分别位于所述引弧片两端的在所述第一方向上延伸的第一引弧段和在所述第一方向上延伸的第二引弧段，所述第一引弧段在所述第二方向上设置在所述第一灭弧装置和所述动触头之间，所述第二引弧段在所述第二方向上设置在所述第二灭弧装置和所述动触头之间，
    所述第一跑弧片的所述第二跑弧端部和所述第一引弧段在所述第二方向上设置在所述第一灭弧装置的相反侧，
    所述第二跑弧片的所述第四跑弧端部和所述第二引弧段在所述第二方向上设置在所述第一灭弧装置的相反侧。
  8. 根据权利要求1所述的分断器，其特征在于，
    所述分断器还包括：
    第一引导件和第二引导件，用于引导所述致动件在所述第一方向上的移动，所述动触头在第一方向上设置在所述第一引导件和所述第二引导件之间。
  9. 一种分断器组件，包括：
    根据权利要求1-8中任一项所述的多个分断器，
    其中，所述多个分断器的致动件彼此连接以联动地运动。
  10. 一种接触器，包括：
    根据权利要求1-8中任一项所述的分断器。
PCT/CN2020/139013 2019-12-24 2020-12-24 分断器、分断器组件和接触器 WO2021129738A1 (zh)

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