CN207800525U - A kind of breaker - Google Patents

A kind of breaker Download PDF

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Publication number
CN207800525U
CN207800525U CN201820086656.3U CN201820086656U CN207800525U CN 207800525 U CN207800525 U CN 207800525U CN 201820086656 U CN201820086656 U CN 201820086656U CN 207800525 U CN207800525 U CN 207800525U
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CN
China
Prior art keywords
armature
side terminal
busbar
yoke
load side
Prior art date
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Active
Application number
CN201820086656.3U
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Chinese (zh)
Inventor
张洵初
吴义
陈志刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changshu Switchgear Manufacturing Co Ltd
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Changshu Switchgear Manufacturing Co Ltd
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Priority to CN201820086656.3U priority Critical patent/CN207800525U/en
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Publication of CN207800525U publication Critical patent/CN207800525U/en
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Abstract

A kind of breaker, including main casing, the inner space of the main casing is divided at least two accommodation spaces side by side by interpolar next door, it is provided with main loop unit in each accommodation space, the main loop unit includes power supply side terminal, static contact, moving contact component and load side terminal, it is arranged with a magnetic release on the connection busbar that moving contact component is connected with load side terminal, which is characterized in that the width of the connection busbar is less than the width of load side terminal.The utility model makes the connection busbar across armature and yoke narrow, the width for connecting busbar is less than the width of load side terminal, inflow-rate of water turbine is inadequate in order to prevent simultaneously, increase the thickness of connection busbar, in this way in the case where ensureing Wen Sheng, the distance between adjacent phase buckle releaser is increased effectively, influence of the adjacent phase current to magnetic release working value is reduced.

Description

A kind of breaker
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of breaker.
Background technology
It is required according to breaker standard:For the breaker with electromagnetism overcurrent trip, multipole short-circuit release moves It is primary to make combined serial verification of the reply per the two poles of the earth.As the demand that user's breaker minimizes is increasingly strong, the pole of breaker Spacing increasingly reduces, and influence of the adjacent electrode current to magnetic release can not be ignored.
Invention content
To solve the above problems, the task of the utility model is to provide for a kind of open circuit that can reduce adjacent interpolar influence Device.
What the task of the utility model was such to reach, a kind of breaker, including main casing, the main casing it is interior Portion space is divided at least two accommodation spaces side by side by interpolar next door, and major loop list is provided in each accommodation space Member, the main loop unit includes power supply side terminal, static contact, moving contact component and load side terminal, in moving contact component A magnetic release is arranged on the connection busbar connected between load side terminal, the width of the connection busbar is less than load-side The width of terminal.
In a specific embodiment of the utility model, the thickness of the connection busbar is more than load side terminal Thickness.
In another specific embodiment of the utility model, the connection busbar includes being electrically connected with moving contact component The joint cover that the galvanic circle busbar connect and load side terminal one end extend, the galvanic circle busbar are stacked and placed on joint cover height The top in direction is spent, is connected and fixed after the two is stacked, and galvanic circle busbar and joint cover equivalent width, both less than load-side The width of terminal.
In another specific embodiment of the utility model, galvanic circle busbar and connection in the connection busbar Plate is integrally formed, and the thickness for connecting busbar is more than the thickness of load side terminal.
In another specific embodiment of the utility model, the magnetic release further includes holder and fixed installation Yoke on holder and the armature being slidably mounted on holder, the yoke and armature surround connection busbar, and armature There is air gap, the armature to take the shape of the letter U and can slide up and down in the bracket between yoke, the both sides of the U-shaped armature are respectively formed There is an armature to be attracted arm, armature is attracted length Ls of the length B more than the yoke of arm.
The utility model so that in a specific embodiment, two armature of the armature be attracted arm and yoke it Between formed there are two equal length air gap.
In the utility model there are one in specific embodiment, the armature, yoke and between the two two Air gap constitutes the flux circuit of the magnetic release, and two air gaps are symmetric along flux circuit.
In the utility model more and in a specific embodiment, the holder spliced by two pieces of frame shape sheet metal components and At the bottom of each frame shape sheet metal component is equipped with fixed arm, both sides are equipped with travelling arm, and the fixed arm is used to set with yoke fixation It sets, mounting groove is offered on travelling arm, the armature can make armature in the bracket by the cooperation of connecting shaft and mounting groove It slides up and down.
The utility model is due to the above structure, having the advantage that:To adapt to the small form factor requirements of breaker, The interpolar of breaker causes adjacent phase current to produce bigger effect magnetic release working value away from reduction, therefore in order to reduce shadow Ring, so that the connection busbar across armature and yoke is narrowed, connect busbar width be less than load side terminal width, while in order to It prevents inflow-rate of water turbine inadequate, increases the thickness of connection busbar, in this way in the case where ensureing Wen Sheng, increase effectively adjacent phase and thread off The distance between device reduces influence of the adjacent phase current to magnetic release working value.
Description of the drawings
Fig. 1 shows breaker overall structure diagram in the utility model.
Fig. 2 shows breaker explosion figures in the utility model.
Fig. 3 shows breaker internal structure schematic diagram in the utility model.
Fig. 4 shows the structural schematic diagram of main loop unit in the utility model.
Fig. 5 shows the structural schematic diagram of buckle releaser in the utility model.
Fig. 6 shows the structural schematic diagram of buckle releaser in the utility model.
Fig. 7 shows that two air gaps are configured to one between the armature and yoke and armature and yoke of buckle releaser in the utility model The structural schematic diagram of a complete magnetic circuit.
Fig. 8 shows the structural schematic diagram of the armature of buckle releaser in the utility model.
Fig. 9 shows the structural schematic diagram of the yoke of buckle releaser in the utility model.
Figure 10 shows the distribution situation of the magnetic line of force in series loop magnetic field in the utility model.
Figure 11 shows the structural schematic diagram of a galvanic circle busbar in the utility model.
Figure 12 shows the structural schematic diagram of another galvanic circle busbar in the utility model.
In figure:1. main casing, 11. interpolar next doors;2. main loop unit, 21. static contacts, 211. power supply side terminals, 22. are moved Contact assembly, 23. load side terminals;3. magnetic release, 31. armature, 311. armature be attracted arm, 312. connecting shafts, 32. holders, 321. fixed arms, 322. travelling arms, 3221. mounting grooves, 33. yokes;4. connecting busbar, 41. galvanic circle busbares, 42. connections Plate.
Specific implementation mode
Applicant will below be described in detail specific embodiment of the present utility model in conjunction with attached drawing, but applicant is to reality The description for applying example is not the limitation to technical solution, and any changed in the form rather than substance according to the utility model design is all answered When being considered as the scope of protection of the utility model.
Such as Fig. 1~Figure 12, the utility model is related to a kind of breaker, the breaker includes insulation main casing, this is absolutely Edge main casing is divided into triad structure, specifically for lower base and on central portion formed divided by next door it is recessed The top cover portion of portion and the intermediate cap, the upper surface of the intermediate cap of covering that the upper surface of are installed on aforementioned lower base, on this basis It is formed each functional component for being assembled in insulation shell distribution as described below and is equipped on lower case and intermediate cap Package assembly.
Receiving includes static contact, shaft, faces and be maintained in shaft with static contact in the lower base of insulation shell Moving contact component, arc-control device and buckle releaser, housing operational mechanism in intermediate cap, the intermediate cap isolated operation mechanism And be contained in lower base main loop unit, between arc-control device, moreover, the bottom next door of the intermediate cap of perforation and make behaviour The toggle link for making mechanism is connected to the shaft for the moving contact for being contained in lower base.
The breaker can be three-pole breaker, can also be four-pole circuit breaker, the present embodiment is with three-pole breaker For, as shown in Fig. 1~Fig. 2 in show to be made of the main casing of triad structure lower case and intermediate cap and top cover portion 1, the inner space of the main casing 1 is divided at least two accommodation spaces side by side, Mei Gerong by interpolar next door 11 Receive and be provided with main loop unit 2 in space, the main loop unit 2 of the breaker by power supply side terminal 211, be integrally formed at electricity The static contact 21 of source terminal 211, the moving contact component 22 faced with static contact 21 and load side terminal 23 are constituted.
As shown in Fig. 3~Fig. 4, one is arranged on the connection busbar 4 that moving contact component 22 and load side terminal 23 connect Magnetic release 3, the connection busbar 4 refer to that one end is electrically connected with moving contact component 22, and the other end is electrically connected with load side terminal 23, And across the conductor of magnetic release 3, the thickness of connection busbar 4 is more than the thickness of load side terminal 23, and width is less than load The width of side terminal 23.In conjunction with showing three be arranged laterally side by side in Fig. 2 for detecting the electricity flowed through in main loop unit The magnetic release 3 of stream, such as Fig. 5~magnetic release shown in Fig. 93, which includes a holder 32, the holder 32 It being spliced by two pieces of frame shape sheet metal components, the bottom of each frame shape sheet metal component is equipped with fixed arm 321, both sides are equipped with travelling arm 322, Mounting groove 3221 is offered on travelling arm 322;One yoke 33 is fixedly mounted on the fixed arm 321 of the mounting bracket 32 On;One armature 31, both sides are equipped with connecting shaft 312, and the connecting shaft 312 is slidably arranged in the mounting groove of travelling arm 322 In 3221, the armature 31 can make armature 31 in the longitudinal axis side of holder 32 by the cooperation of connecting shaft 312 and mounting groove 3221 To sliding up and down, and between the yoke 33 there is electromagnetism to be attracted gap.The armature 31 takes the shape of the letter U and can be in holder 32 It slides up and down, the both sides of the U-shaped armature 31 are respectively formed with an armature and are attracted arm 311, and the armature of left and right two is attracted arm 311 and symmetrically sets It sets, each armature is attracted length Ls of the length B more than the yoke 33 of arm 311.
In Figure 5, the yoke 33 and armature 31 surround connection busbar 4, and yoke 33, armature 31 and yoke 33 Two air gaps between armature 31 are configured to a complete magnetic circuit.Specifically, as shown in Figure 5,6, magnetictrip 3 includes Yoke 33, armature 31, holder 32.Armature 31 along 32 y direction of holder make it is linear move, armature 31 be attracted after with yoke 33 The structure substantially in frame-type is formed, the lateral length of frame-type is less than longitudinal length.
As shown in fig. 7, there are two the air gaps of equal length for setting between armature 31 and yoke 33.
As shown in figure 11, the connection busbar 4 include the galvanic circle busbar 41 being electrically connected with moving contact component 22 and The joint cover 42 that 23 one end of load side terminal extends, the galvanic circle busbar 41 are stacked and placed on the upper of 42 short transverse of joint cover Side is fixed after the two is stacked by screw, and the equivalent width of the width of galvanic circle busbar 41 and joint cover 42, both less than The width of load side terminal 23.
As shown in figure 12, galvanic circle busbar 41 and joint cover 42 are integrally formed in the connection busbar 4, and the connection is female The thickness of line 4 is more than the thickness of load side terminal 23.
According to Maxwell's electromagnetic attraction formula
In the case that actuation area is certain, the suction-combining force is related with magnetic flux.In the magnetic field in linear medium, Ruo Gangen The magnetic field that current carrying conductor generates jointly is equal to the sum of the magnetic field that each current carrying conductor individually generates, and here it is magnetic field superposition theorems. Figure 10 shows the distribution situation of the magnetic line of force in series loop magnetic field, wherein O1、O2For conductor center, it can be seen that in O1、O2 Between magnetic field-enhanced, both sides field weakening.
According to Ampere circuit law:Magnetic field intensity H is along the line integral of closed circuit and across the circuit institute delimited areas Relationship between current value is
Magnetic induction density B is by the flux of some face A in magnetic field, i.e. magnetic flux
In formula:H-magnetic field intensity;B-magnetic induction intensity;μ-absolute permeability
By formula 2,3,4 it is found that using external magnetic field (another phase) can be reduced after this patent structure to two gas of magnetic release The influence of gap magnetic flux total amount.

Claims (8)

1. the inner space of a kind of breaker, including main casing (1), the main casing (1) is drawn by interpolar next door (11) It is divided at least two accommodation spaces side by side, main loop unit (2), the main loop unit is provided in each accommodation space (2) include power supply side terminal (211), static contact (21), moving contact component (22) and load side terminal (23), in moving contact component (22) it is arranged with a magnetic release (3) on the connection busbar (4) connected between load side terminal (23), which is characterized in that institute The width for stating connection busbar (4) is less than the width of load side terminal (23).
2. a kind of breaker according to claim 1, it is characterised in that the thickness of the connection busbar (4) is more than load The thickness of side terminal (23).
3. a kind of breaker according to claim 1, it is characterised in that the connection busbar (4) includes and moving contact group The joint cover (42) that the galvanic circle busbar (41) of part (22) electrical connection and load side terminal (23) one end extend, described leads Electrical circuit busbar (41) is stacked and placed on the top of joint cover (42) short transverse, is connected and fixed after the two is stacked, and galvanic circle Busbar (41) and joint cover (42) equivalent width, the both less than width of load side terminal (23).
4. a kind of breaker according to claim 2, it is characterised in that galvanic circle busbar in the connection busbar (4) (41) thickness for being integrally formed with joint cover (42), and connecting busbar (4) is more than the thickness of load side terminal (23).
5. a kind of breaker according to claim 1, it is characterised in that the magnetic release (3) further includes holder (32) With the yoke (33) being fixedly mounted on holder (32) and the armature (31) being slidably mounted on holder (32), the yoke (33) and armature (31) surrounds connection busbar (4), and has air gap, the armature between armature (31) and yoke (33) (31) it takes the shape of the letter U and can be slided up and down in holder (32), the both sides of the U-shaped armature (31) are respectively formed with an armature and are attracted arm (311), armature is attracted length Ls of the length B more than the yoke (33) of arm (311).
6. a kind of breaker according to claim 5, it is characterised in that two armature of the armature (31) are attracted arm (311) air gap there are two equal length is formed between yoke (33).
7. a kind of breaker according to claim 5, it is characterised in that the armature (31), yoke (33) and the two it Between two air gaps constitute the flux circuit of the magnetic release, two air gaps are symmetric along flux circuit.
8. a kind of breaker according to claim 5, it is characterised in that the holder (32) is by two pieces of frame shape sheet metal components It is spliced, the bottom of each frame shape sheet metal component is equipped with fixed arm (321), both sides are equipped with travelling arm (322), the fixed arm (321) it is used to be fixedly installed with yoke (33), mounting groove (3221), the armature (31) is offered on travelling arm (322) Armature (31) can be made to be slided up and down in holder (32) by the cooperation of connecting shaft (312) and mounting groove (3221).
CN201820086656.3U 2018-01-18 2018-01-18 A kind of breaker Active CN207800525U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820086656.3U CN207800525U (en) 2018-01-18 2018-01-18 A kind of breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820086656.3U CN207800525U (en) 2018-01-18 2018-01-18 A kind of breaker

Publications (1)

Publication Number Publication Date
CN207800525U true CN207800525U (en) 2018-08-31

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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114460455A (en) * 2022-03-04 2022-05-10 国网河北省电力有限公司雄安新区供电公司 Device and method for detecting tripping capability of electromagnetic tripping device of low-voltage direct-current circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114460455A (en) * 2022-03-04 2022-05-10 国网河北省电力有限公司雄安新区供电公司 Device and method for detecting tripping capability of electromagnetic tripping device of low-voltage direct-current circuit breaker

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