CN209487452U - Selective small-sized DC breaker - Google Patents
Selective small-sized DC breaker Download PDFInfo
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- CN209487452U CN209487452U CN201920550608.XU CN201920550608U CN209487452U CN 209487452 U CN209487452 U CN 209487452U CN 201920550608 U CN201920550608 U CN 201920550608U CN 209487452 U CN209487452 U CN 209487452U
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Abstract
The utility model provides a kind of selective small-sized DC breaker, and selective small-sized DC breaker includes left pole breaker and right pole breaker；Left pole breaker includes moving system, left pole movable contact system, left pole static contact, left pole lock, left pole tripping, left pole Handleset, Zuo Jishuan gold component and left pole connecting rod in electromagnetism wink；Right pole breaker includes short deferred action structure, right pole movable contact system, right pole static contact, right pole lock, right pole tripping, right pole Handleset, right extremely double golden components and right pole connecting rod etc..Advantage are as follows: left pole breaker realizes short-circuit instantaneous protection and overload long delay protection; right pole breaker realizes short circuit short time-delay protection and overload long delay protection; product cooperation in the two poles of the earth is small in size, easy for installation; it can be realized the selective protection function within the scope of certain overload or short-circuit current; healthy circuit is avoided to power off; so as to avoid unnecessary economic loss, the reliability and security of power supply is improved.
Description
Technical field
The utility model belongs to circuit breaker tripping protection technique field, and in particular to a kind of selectivity small-sized DC open circuit
Device.
Background technique
With the development of low-voltage electrical apparatus, miniature circuit breaker in Terminal Power Distribution System using more and more common, breaker
Mainly for the protection of conducting wire or equipment in Terminal Power Distribution System, it may be assumed that when the failure electric current in Terminal Power Distribution System, break
Road device can cut off the fault current in time, to prevent that the accident of the fault current is caused to spread.
Now, many user setting circuit breaker multiple levels protections.When some electrical equipment breaks down, easily occur following two
Kind phenomenon: the first, the junior breaker nearest apart from the equipment and its concatenated higher level's breaker simultaneously operation tripping；Second
Kind, in the case where junior's breaker without tripping in the shortest time, higher level's breaker has tripped, i.e. generation overstepping
Phenomenon.Above two phenomenon powers off healthy circuit due to higher level's circuit breaker trip, fault coverage is caused to spread, into
And cause unnecessary, more huge economic loss.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of selective small-sized DC breaker, can be effective
It solves the above problems.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of selective small-sized DC breaker, including the left pole being connected in Terminal Power Distribution System
Breaker (100) and right pole breaker (200)；
The left pole breaker (100) includes left pole outer housing (101), left pole inlet wire connecting terminal (102), left pole outlet
Connecting terminal (103), electromagnetism wink move system (104), left pole movable contact system (105), left pole static contact (106), left pole lock
(107), left pole tripping (108), left pole Handleset (109), Zuo Jishuan gold component (110) and left pole connecting rod (111)；
The left pole static contact (106) is fixedly installed on the inside of the left pole outer housing (101)；The left pole moving contact
System (105) is pivotally mounted to the inside of the left pole outer housing (101), the left side by left pole moving contact shaft (1051)
Pole movable contact system (105) is rotated clockwise or counterclockwise around the left pole moving contact shaft (1051), and then is made described
The movable contact of left pole movable contact system (105) is realized close to or far from the stationary contact of the left pole static contact (106) and closes a floodgate or divide
Lock；The left pole lock (107) and the left pole tripping (108) are articulated with the left pole movable contact system (105) above；
The left pole lock (107), which is located at, to be moved on the path that system (104) motion end travels forward in the electromagnetism wink, and the electromagnetism is passed through
The movement for moving system (104) wink pushes left pole lock (107) rotation, and then makes the left pole lock (107) and the left side
Pole tripping (108) is detached from locked state；When the left pole lock (107) unlocks, the left pole movable contact system
(105) it is moved to the direction far from the left pole static contact (106) and realizes separating brake；Meanwhile the left pole Handleset (109)
It is rotated under the action of handle spring to sub-gate position；
The left pole lock (107) is also connect by the left pole connecting rod (111) with the Zuo Jishuan gold component (110)；
The left pole lock (107) is driven to turn by the left pole connecting rod (111) when Zuo Jishuan gold component (110) heated bending
It is dynamic, so that the left pole lock (107) and the left pole tripping (108) is detached from locked state and is realized separating brake；
The right pole breaker (200) includes right pole outer housing (201), right pole inlet wire connecting terminal (202), right pole outlet
Connecting terminal (203), short deferred action structure (204), right pole movable contact system (205), right pole static contact (206), right pole lock
Detain (207), right pole tripping (208), right pole Handleset (209), right extremely double golden components (210) and right pole connecting rod (211)；
The right pole static contact (206) is fixedly installed on the inside of the right pole outer housing (201)；The right pole moving contact
System (205) is pivotally mounted to the inside of the right pole outer housing (201), the right side by right pole moving contact shaft (2051)
Pole movable contact system (205) is rotated clockwise or counterclockwise around the right pole moving contact shaft (2051), and then is made described
The movable contact of right pole movable contact system (205) is realized close to or far from the stationary contact of the right pole static contact (206) and closes a floodgate or divide
Lock；The right pole lock (207) and the right pole tripping (208) are articulated with the right pole movable contact system (205) above；
The right pole lock (207) is located on the path that short deferred action structure (204) motion end travels forward, by described short
The action delay of deferred action structure (204) pushes right pole lock (207) rotation, and then makes the right pole lock (207)
Locked state is detached from the right pole tripping (208)；When the right pole lock (207) unlocks, the right pole moving contact
System (205) moves to the direction far from the right pole static contact (206) and realizes separating brake；Meanwhile the right pole Handleset
(209) it is rotated under the action of handle spring to sub-gate position；
The right pole lock (207) is also connect by the right pole connecting rod (211) with right extremely double golden components (210)；
The right pole lock (207) is driven to turn by the right pole connecting rod (211) when described right extremely double golden component (210) heated bendings
It is dynamic, so that the right pole lock (207) and the right pole tripping (208) is detached from locked state and is realized separating brake；
Wherein, the electromagnetic coil that the left pole inlet wire connecting terminal (102) moves system (104) with the electromagnetism wink electrically connects
It connects；The electromagnetic coil and the left pole static contact (106) for moving system (104) the electromagnetism wink are electrically connected；The left extremely dynamic touching
Head system (105) and the Zuo Jishuan gold component (110) are electrically connected, and the Zuo Jishuan gold component (110) goes out with the left pole
Line connecting terminal (103) is electrically connected；
The left pole outlet connecting terminal (103) and the right pole inlet wire connecting terminal (202) are electrically connected；The right pole
Inlet wire connecting terminal (202) and the electromagnetic coil of the short deferred action structure (204) are electrically connected；The short deferred action knot
The electromagnetic coil of structure (204) and the right pole static contact (206) are electrically connected；The right pole movable contact system (205) with it is described
Right extremely double golden components (210) are electrically connected, right extremely double golden components (210) and right pole outlet connecting terminal (203) electricity
Property connection；
The left pole inlet wire connecting terminal (102) and the right pole outlet connecting terminal (203) respectively with terminal power distribution system
The positive and negative terminal of system is electrically connected.
Preferably, the electromagnetism wink move system (104) include first coil skeleton (1041), the first dynamic iron core (1042),
First static iron core (1043), the first mandril (1044) and the first electromagnetic coil (1045)；
The first coil skeleton (1041) fixed setting, the outside of the first coil skeleton (1041) are arranged described the
One electromagnetic coil (1045)；First dynamic iron core (1042), institute is arranged in the internal left end of the first coil skeleton (1041)
It states the internal right end of first coil skeleton (1041) and first static iron core (1043) is fixedly mounted；First mandril (1044)
One end and the right end of first dynamic iron core (1042) fix, the other end of first mandril (1044) passes through described first
The centre bore of static iron core (1043), and extend to outside first coil skeleton (1041) right side, and on first top
The right end of bar (1044) has mandril cap, and the mandril cap is continued in outside first coil skeleton (1041) right side；
Under the electromagnetic force of first electromagnetic coil (1045), first dynamic iron core (1042) is moved right, and then is pushed
First mandril (1044) moves right.
Preferably, the short deferred action structure (204) includes the second coil rack (2041), the second dynamic iron core
(2042), the second static iron core (2043), the second mandril (2044), the second electromagnetic coil (2045), spring (2046) and copper pipe
(2047)；
Second coil rack (2041) fixed setting, the outside of second coil rack (2041) are arranged described the
Two electromagnetic coils (2045)；Second dynamic iron core (2042) is arranged in the internal left end of second coil rack (2041)；Institute
It states the internal right end of the second coil rack (2041) and second static iron core (2043) is fixedly mounted；Second static iron core
(2043) axially disposed ladder axis hole (20431), the ladder axis hole (20431) include the large diameter hole and diameter holes of perforation；
The copper pipe (2047) is cylindrical tube, and outer diameter matches with the diameter holes, the middle part setting of the copper pipe (2047) and institute
The protrusion (20471) that large diameter hole matches is stated, the copper pipe (2047) is stuck in the ladder axis hole by raised (20471)
(20431), the copper pipe (2047) is limited to move right and be detached from second coil rack (2041)；Second mandril
(2044) one end and second dynamic iron core (2042) is fixed, and the other end of second mandril (2044) extend into described
In copper pipe (2047), the spring (2046) is partially located at the large diameter hole and is placed on outside the copper pipe (2047), the bullet
Another part of spring (2046) is placed on outside second mandril (2044), when not by the free state of electromagnetic force, described
Under the elastic force effect of spring (2046), on the one hand, the second dynamic iron core (2042) left side is made to be close to the second coil bone
The inner left wall of frame (2041) on the other hand makes described raised (20471) of the copper pipe (2047) to be close to described second quiet
On the right side of the large diameter hole of iron core (2043)；Also, at this point, the right side of second mandril (2044) is located at the copper pipe
(2047) inside does not stretch out the right side of second coil rack (2041).
It preferably, further include shaft (300) and taper knob (400)；
The left pole movable contact system (105) of the left pole breaker (100) passes through shaft (300) and described right extremely disconnected
The right pole movable contact system (205) of road device (200) is connected；The left pole handle of the left pole breaker (100)
Component (109) is connect by taper knob (400) with the right pole Handleset (209) of the right pole breaker (200).
Selectivity small-sized DC breaker provided by the utility model has the advantage that
(1) selective small-sized DC breaker integrates two-stage breaker, and left pole breaker realizes short-circuit instantaneous protection and mistake
Carrying long delay protection, right pole breaker realizes short circuit short time-delay protection and overload long delay protection, product cooperation in the two poles of the earth is small in size,
It is easy for installation, it is typically mounted at the upper level of direct current most terminal, protects multiple branches, can be realized certain overload or short trouble
Selective protection function in current range, avoids healthy circuit from powering off, and so as to avoid unnecessary economic loss, mentions
The reliability and security of height power supply.
(2) it is assembled together by shaft 300 with taper knob 400 due to left pole breaker 100 and right pole breaker 200,
Therefore, when the breaker of any pole realizes separating brake protection, separating brake protection can be realized by another pole breaker of synchronous drive immediately,
Which thereby enhance the reliability of separating brake protection.
Detailed description of the invention
Fig. 1 is the assembled state structure chart of selective small-sized DC breaker；
Fig. 2 is the disassembled form structure chart of selective small-sized DC breaker；
Fig. 3 is that selective small-sized DC breaker splits the structure chart after simultaneously hidden parts component；
Fig. 4 is that left pole breaker and right pole breaker major part pass through shaft assembling relationship figure；
Fig. 5 is the sectional view of left pole breaker；
Fig. 6 is left pole breaker core component assembling relationship figure；
Fig. 7 is the sectional view for moving system in electromagnetism wink；
Fig. 8 is the sectional view of right pole breaker；
Fig. 9 is right pole breaker core component assembling relationship figure；
Figure 10 is the sectional view of short deferred action structure.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
The utility model provides a kind of selective small-sized DC breaker, with reference to Fig. 1-Fig. 4, including is connected on terminal power distribution
Left pole breaker 100 and right pole breaker 200 in system；Left pole breaker 100 includes to move system and double golden components electromagnetism wink,
It is responsible for realizing short-circuit instantaneous protection and overload long delay protection；Right pole breaker 200 includes short deferred action structure and double golden groups
Part realizes short circuit short time-delay protection and overload long delay protection.Left pole breaker 100 and right pole breaker 200 pass through shaft 300
It is connected with taper knob 400, the selective protection of breaker, in DC circuit, left 100 He of pole breaker are realized in overall co-ordination
Right pole breaker 200 is used in series, therefore can be distributed in function on the breaker of left and right the two poles of the earth, and protection is electric as a whole for combination
Road.
The movement that left pole breaker 100 and right pole breaker 200 implement separating brake protection is independent, but due to left pole breaker
100 and right pole breaker 200 be assembled together with taper knob 400 by shaft 300, therefore, when the breaker reality of any pole
When existing separating brake protection, it can realize separating brake protection by another pole breaker of synchronous drive immediately, which thereby enhance the reliable of separating brake protection
Property.
Particularly, in the utility model, left and right it is extremely interchangeable, this breaker as a whole, as apart from terminal most
The upper level protective breaker of bottom.
It describes in detail separately below to the structure and principle of left pole breaker 100 and right pole breaker 200:
(1) left pole breaker 100
With reference to Fig. 5 and Fig. 6, left pole breaker 100 includes left pole outer housing 101, left pole inlet wire connecting terminal 102, Zuo Ji
Outlet connecting terminal 103, electromagnetism wink move system 104, left pole movable contact system 105, left pole static contact 106, left pole lock 107,
Left pole tripping 108, left pole Handleset 109, Zuo Jishuan gold component 110 and left pole connecting rod 111；Certainly, settable arc-chutes,
Improve safety.
Left pole static contact 106 is fixedly installed on the inside of left pole outer housing 101；Left pole movable contact system 105 passes through left pole
Moving contact shaft 1051 is pivotally mounted to the inside of left pole outer housing 101, and left pole movable contact system 105 is around left pole moving contact
Shaft 1051 is rotated clockwise or counterclockwise, and then makes the movable contact of left pole movable contact system 105 close to or far from left pole
The stationary contact of static contact 106 realizes combined floodgate or separating brake；Left pole lock 107 and left pole tripping 108 are articulated with left pole moving contact system
Above system 105；Left pole lock 107, which is located at, to be moved on the path that 104 motion end of system travels forward in electromagnetism wink, dynamic by electromagnetism wink
The movement of system 104 pushes left 107 rotation of pole lock, and then left pole lock 107 and left pole tripping 108 is made to be detached from locked state；
When left pole lock 107 unlocks, left pole movable contact system 105 is moved to the direction far from left pole static contact 106 and is realized
Separating brake；Meanwhile left pole Handleset 109 rotates under the action of handle spring to sub-gate position；
Left pole lock 107 is also connect by left pole connecting rod 111 with Zuo Jishuan gold component 110；Zuo Jishuan gold component 110 by
Left 107 rotation of pole lock is driven by left pole connecting rod 111 when thermal flexure, left pole lock 107 and left pole tripping 108 is made to be detached from lock
Conjunction state and realize separating brake.
For left pole breaker 100, short-circuit instantaneous protection is realized by moving system 104 electromagnetism wink；Pass through double golden components 110
Realize overload long delay protection.
In the utility model, with reference to Fig. 7, moving system 104 electromagnetism wink includes first coil skeleton 1041, the first dynamic iron core
1042, the first static iron core 1043, the first mandril 1044 and the first electromagnetic coil 1045；
First coil skeleton 1041 is fixedly installed, and the outside of first coil skeleton 1041 is arranged the first electromagnetic coil 1045；
The first dynamic iron core 1042 is arranged in left end inside first coil skeleton 1041, and the right end inside first coil skeleton 1041 is fixed
First static iron core 1043 is installed；One end of first mandril 1044 and the right end of the first dynamic iron core 1042 are fixed, the first mandril 1044
The other end pass through the centre bore of the first static iron core 1043, and extend to outside 1041 right side of first coil skeleton, and the
The right end of one mandril 1044 has mandril cap, and mandril cap is continued in outside 1041 right side of first coil skeleton；In the first electricity
Under the electromagnetic force of magnetic coil 1045, the first dynamic iron core 1042 is moved right, and then the first mandril 1044 is pushed to move right.
Therefore, left pole Handleset 109 and left pole movable contact system 105 constitute four-bar mechanism, and handle rotates clockwise,
Under four-bar mechanism effect, realizes and close a floodgate；
When circuit overload electric current reaches limit value, for example, being 1-2 times of rated current, then in Zuo Jishuan gold component 110
Double golden hair thermal flexures, only so that left pole connecting rod 111 is driven left 107 movement of pole lock by double gold bendings, left pole lock 107 and left
Pole tripping 108 is threaded off, and left pole movable contact system 105 releases energy, circuit breaker tripping separating brake, realizes overload long delay protection.One
As in the case of, overload long delay protection implement the time, it may be assumed that the time needed for Cong Shuanjin component bends to circuit breaker tripping is longer,
It is 1 hour or so.
When line short circuit current is larger, for example, reach when being 10 times of rated current and move setting current interval range in wink,
Short circuit current, which reaches, at this time moves current value needed for system 104 acts and successfully strikes left pole lock 107, therefore, electricity electromagnetism wink
Magnetic wink moves 104 quick acting of system, and strikes left pole lock 107, makes left pole lock 107 and left pole tripping 108 separation, realizes de-
Deduction of points lock, to realize short-circuit instantaneous protection.It is acted since the mandril that electromagnetism wink moves system 104, to successfully striking Zuo Jisuo
Time needed for button 107 is very short.
(2) right pole breaker 200
With reference to Fig. 8 and Fig. 9, the general structure and distribution of right pole breaker 200 and left pole breaker 100 are essentially identical, main
It distinguishes are as follows: right pole breaker 200 uses short deferred action structure 204, the electromagnetism wink dynamic system used with left pole breaker 100
104 compare, current value needed for the short deferred action structure 204 of right pole breaker 200 successfully acts and strikes lock, lower than electricity
Move current value needed for system 104 successfully acts and strikes lock magnetic wink.Also, the short deferred action knot of right pole breaker 200
The driven time for accomplishing that tripping is required of structure 204 is longer than and moves the driven time for accomplishing that tripping is required of system 104 electromagnetism wink.Therefore, right
Pole breaker 200 realizes short circuit short time-delay protection and overload long delay protection.
With reference to attached drawing, right pole breaker 200 includes right pole outer housing 201, right pole inlet wire connecting terminal 202, right pole outlet
Connecting terminal 203, short deferred action structure 204, right pole movable contact system 205, right pole static contact 206, right pole lock 207, the right side
Pole tripping 208, right pole Handleset 209, right extremely double golden components 210 and right pole connecting rod 211；
Right pole static contact 206 is fixedly installed on the inside of right pole outer housing 201；Right pole movable contact system 205 passes through right pole
Moving contact shaft 2051 is pivotally mounted to the inside of right pole outer housing 201, and right pole movable contact system 205 is around right pole moving contact
Shaft 2051 is rotated clockwise or counterclockwise, and then makes the movable contact of right pole movable contact system 205 close to or far from right pole
The stationary contact of static contact 206 realizes combined floodgate or separating brake；Right pole lock 207 and right pole tripping 208 are articulated with right pole moving contact system
Above system 205；Right pole lock 207 is located on the path that short 204 motion end of deferred action structure travels forward, dynamic by short delay
The action delay for making structure 204 pushes right 207 rotation of pole lock, and then it is sealed to be detached from right pole lock 207 and right pole tripping 208
State；When right pole lock 207 unlocks, right pole movable contact system 205 is moved to the direction far from right pole static contact 206
And realize separating brake；Meanwhile right pole Handleset 209 rotates under the action of handle spring to sub-gate position；
Right pole lock 207 is also connect by right pole connecting rod 211 with right extremely double golden components 210；Right extremely double golden components 210 by
Right 207 rotation of pole lock is driven by right pole connecting rod 211 when thermal flexure, right pole lock 207 and right pole tripping 208 is made to be detached from lock
Conjunction state and realize separating brake；
Wherein, left pole inlet wire connecting terminal 102 is electrically connected with the electromagnetic coil for moving system 104 electromagnetism wink；Electromagnetism wink is dynamic
The electromagnetic coil of system 104 and left pole static contact 106 are electrically connected；Left pole movable contact system 105 and 110 electricity of Zuo Jishuan gold component
Property connection, Zuo Jishuan gold component 110 and left pole outlet connecting terminal 103 are electrically connected；
Left pole outlet connecting terminal 103 is electrically connected with right pole inlet wire connecting terminal 202；Right pole inlet wire connecting terminal 202
It is electrically connected with the electromagnetic coil of short deferred action structure 204；The electromagnetic coil of short deferred action structure 204 and right pole static contact
206 are electrically connected；Right pole movable contact system 205 is electrically connected with right extremely double golden components 210, right extremely double golden components 210 and right pole
Outlet connecting terminal 203 is electrically connected；
Left pole inlet wire connecting terminal 102 and right pole outlet connecting terminal 203 are electric with the positive and negative terminal of Terminal Power Distribution System respectively
Property connection.
Dynamic iron core front end multi-diameter shaft and mandril cooperate, and mandril passes through spring and copper pipe cooperates, and copper pipe is acted in spring force
Lower and static iron core cooperates.Lock of the mandril in copper pipe impact static contact system, breaker open operation, and in setting time,
Short circuit current disappears, and can return to original state；Double gold curve through the lock in connecting rod drive static contact system, discharge energy
Amount, breaker open operation.The breaker is able to achieve the selective protection of Graded coordination, when circuit being avoided short circuit current occur, under
Grade breaker simultaneously operation or leapfrog movement.
With reference to Figure 10, short deferred action structure 204 is a kind of novel deferred action structure, including the second coil rack
2041, the second dynamic iron core 2042, the second static iron core 2043, the second mandril 2044, the second electromagnetic coil 2045,2046 and of spring
Copper pipe 2047；
The fixed setting of second coil rack 2041, the outside of the second coil rack 2041 are arranged the second electromagnetic coil 2045,
That is: the second electromagnetic coil 2045 is looped around the outside of the second coil rack 2041 of insulating materials composition；Second dynamic iron core 2042,
Second static iron core 2043, the second mandril 2044, spring 2046 and copper pipe 2047 are in same axial line, and are in the second coil bone
Inside frame 2041, the second dynamic iron core 2042 is arranged in the left end inside the second coil rack 2041；Inside second coil rack 2041
Right end be fixedly mounted the second static iron core 2043；The axially disposed ladder axis hole 20431 of second static iron core 2043, ladder axis hole
20431 include the large diameter hole and diameter holes of perforation；Copper pipe 2047 is cylindrical tube, and outer diameter matches with diameter holes, copper pipe 2047
The protrusion 20471 that matches with large diameter hole of middle part setting, copper pipe 2047 is stuck in ladder axis hole 20431 by protrusion 20471, limit
Copper pipe 2047 processed moves right and is detached from the second coil rack 2041；One end of second mandril 2044 and the second dynamic iron core 2042 are solid
Fixed, for example, 2042 front end multi-diameter shaft of the second dynamic iron core and the second mandril 2044 cooperate, the other end of the second mandril 2044 is extend into
In copper pipe 2047,2046 part of spring is located at large diameter hole and is placed on the outside of copper pipe 2047, and another part of spring 2046 is placed on the
Two mandrils, 2044 outside, when not by the free state of electromagnetic force, under the elastic force effect of spring 2046, on the one hand, make second
On the other hand the inner left wall of the second coil rack 2041 is close in 2042 left side of dynamic iron core makes the protrusion 20471 of copper pipe 2047
It is close on the right side of the large diameter hole of the second static iron core 2043；Also, at this point, the right side of the second mandril 2044 is located at the interior of copper pipe 2047
The right side of the second coil rack 2041 is not stretched out in portion.
Its usage mode are as follows:
Second dynamic iron core, 2042 front end multi-diameter shaft and the second mandril 2044 cooperate, and the second mandril 2044 passes through spring 2046
Copper pipe 2047 is penetrated, copper pipe 2047 cooperates under spring force effect with the second static iron core 2043；
Second static iron core 2043 and the cooperation of the second coil rack 2041, composition are assembled to electricity entirely through the mode of screw-in
In the sub-assembly that magnetic coil and magnetic yoke are constituted, and pass through the location structure effective position on the second coil rack 2041.
When circuit overload electric current reaches limit value, for example, being 1-2 times of rated current, then in right extremely double golden components 210
Double golden hair thermal flexures, only so that right pole connecting rod 211 is driven right 207 movement of pole lock by double gold bendings, right pole lock 207 and right
Pole tripping 208 is threaded off, and right pole movable contact system 205 releases energy, circuit breaker tripping separating brake, realizes overload long delay protection.One
As in the case of, overload long delay protection implement the time, it may be assumed that the time needed for Cong Shuanjin component bends to circuit breaker tripping is longer,
It is 1 hour or so.
When occurring short circuit current in circuit, when reaching short delayed setting electric current section, for example, being 5-8 times of rated current
Value, electromagnetic force at this time force the second dynamic iron core 2042 to overcome spring 2046 to produce under electromagnetic force with the second mandril 2044
Raw resistance is moved to the second static iron core 2043, is all moved in copper pipe in 2044 whole process of the second mandril, in motion process
In, after a period of time, the separating brake if junior's breaker is not threaded off successfully, always exists electric current in circuit, then pass through copper pipe
2047 guiding, the second mandril 2044 impact lock realizes breaker tripping separating brake in setting time, realizes short circuit short time-delay
Protection.The time required to short circuit short time-delay protection are as follows: realize this period of time of separating brake to the end from 2044 setting in motion of the second mandril.
During the motion, after a period of time, if junior's breaker is successfully threaded off separating brake, current vanishes, second top
Bar 2044 moves forward a distance, but extreme position fails impact lock and realizes tripping separating brake, is subsequently returned to initial
Position returns to original state.The phenomenon that thus avoiding higher level's breaker overstepping.
The utility model also provides a kind of tripping guard method of selective small-sized DC breaker, comprising the following steps:
Step 1, it after left pole breaker 100 and right pole breaker 200 are connected, connects in Terminal Power Distribution System；
When the electric current of Terminal Power Distribution System is rated current I1, left pole breaker 100 and right pole breaker 200 are closed
Lock, to make the current lead-through of entire circuit；
Step 2, when the electric current of Terminal Power Distribution System is overload current I2, if left pole breaker 100 and right pole breaker
200 is normal, then overload long delay separating brake protection is accomplished by the following way in left pole breaker 100:
110 heated bending of Zuo Jishuan gold component of left pole breaker 100, and with the progress of time, bending degree is continuous
It increases, when reaching the delay time T1 of overload long delay, 110 bending degree of Zuo Jishuan gold component reaches action value, Zuo Jishuan
Golden component 110 pulls left 107 rotation of pole lock, the locked state of left pole lock 107 and left pole tripping 108 is released, to make a left side
Pole movable contact system 105 is rotated counterclockwise and is separated with the stationary contact of left pole static contact 106, realizes separating brake；Meanwhile left pole handle
Component 109 rotates counterclockwise to sub-gate position；
Right pole breaker 200 generates same movement by the bending pulling function of right extremely double golden components 210 and realized
Carry the protection of long delay separating brake；
Also, during left pole breaker 100 and right 200 separating brake of pole breaker, pass through shaft 300 and taper knob
400 connection function keeps left pole breaker 100 consistent with right pole breaker 200 overload long delay separating brake protection act；
Step 3, when the electric current of Terminal Power Distribution System is overload current I2, if left pole breaker 100 breaks down, right pole
Breaker 200 is normal, then right pole breaker 200 realizes overload long delay by the bending pulling function of right extremely double golden components 210
Separating brake protection；Also, when the right pole movable contact system 205 of right pole breaker 200 rotates and leaves right pole static contact 206, lead to
The effect for crossing shaft 300 drives the left pole movable contact system 105 of left pole breaker 100 to leave left pole static contact 106, realizes linkage
Drive the effect of left 100 synchronization action of pole breaker；
Step 4, when short circuit current occurs in Terminal Power Distribution System, also, short circuit current is located at short delayed setting electric current section
When [I3, I4], wherein I4 > I3 > I2；The protection of short circuit short time-delay separating brake is accomplished by the following way in right pole breaker 200:
Short circuit current makes the second electromagnetic coil 2045 generate electromagnetic force, and electromagnetic force drives the second dynamic iron core 2042 to push second
2044 right direction of mandril constantly moves, during the constantly movement to the right of the second mandril 2044, on the one hand, constantly compression bullet
Spring 2046, on the other hand, the end of the second mandril 2044 is constantly close to right pole lock 207；
If after a period of time, if junior's breaker is not threaded off, separating brake, electric current are still had, then the second mandril 2044
End stretch out the second coil rack 2041 and strike right pole lock 207, make right 207 movement of pole lock, release right pole lock 207
With the locked state of right pole tripping 208, separating brake is realized；Realize that separating brake is taken to the end from 2044 setting in motion of the second mandril
Between for short circuit short time-delay separating brake protection the first delay time T2；
During right 200 separating brake of pole breaker, by the connection function of shaft 300 and taper knob 400, make left extremely disconnected
Road device 100 is consistent with right 200 separating brake protection act of pole breaker；
If current vanishes, then the second mandril 2044 continues after a period of time, if junior's circuit breaker tripping separating brake
Movement but extreme position fail to strike right 207 realization tripping separating brake of pole lock, bullet of subsequent second mandril 2044 in spring 2046
It moves downward and returns to original state under power effect；It is short the time required to from 2044 setting in motion of the second mandril to current vanishes
Second delay time T3 of short out delay separating brake protection；
Wherein, T3 < T2 < T1；
Step 5, when short circuit current occurs in Terminal Power Distribution System, also, short circuit current reaches short-circuit instantaneous protection electric current I5
When, wherein I5 > I4；Short-circuit instantaneous separating brake protection is accomplished by the following way in left pole breaker 100:
Short circuit current makes the first electromagnetic coil 1045 generate electromagnetic force, and electromagnetic force drives the first dynamic iron core 1042 to push first
1044 right direction of mandril quickly moves, and rapidly contacts the end of the first mandril 1044 and strike left 107 realization of pole lock
Tripping separating brake；The delay protected the time required to realizing separating brake to the end from 1044 setting in motion of the first mandril for the instantaneous separating brake of short circuit
Time T4；T4 < T2；
When left pole breaker 100 carries out short-circuit instantaneous separating brake process, made by the connection of shaft 300 and taper knob 400
With keeping left pole breaker 100 consistent with right 200 separating brake protection act of pole breaker.
Selectivity small-sized DC breaker provided by the utility model and tripping guard method have the advantage that
(1) selective small-sized DC breaker integrates two-stage breaker, and left pole breaker realizes short-circuit instantaneous protection and mistake
Carrying long delay protection, right pole breaker realizes short circuit short time-delay protection and overload long delay protection, product cooperation in the two poles of the earth is small in size,
It is easy for installation, it is typically mounted at the upper level of direct current most terminal, protects multiple branches, can be realized certain overload or short trouble
Selective protection function in current range, avoids healthy circuit from powering off, and so as to avoid unnecessary economic loss, mentions
The reliability and security of height power supply.
(2) it is assembled together by shaft 300 with taper knob 400 due to left pole breaker 100 and right pole breaker 200,
Therefore, when the breaker of any pole realizes separating brake protection, separating brake protection can be realized by another pole breaker of synchronous drive immediately,
Which thereby enhance the reliability of separating brake protection.
(3) electronic type selectivity breaker, reliable in action small by electromagnetic interference are compared.
(4) structure is simple, at low cost.
(5) small in size, save installation space.
(6) to sum up, the utility model is realized under conditions of must assure that all trippings of realization, division movement
The selective protection of dc circuit breaker, and unique layout is createed, substantially reduce the volume of device.Therefore this is practical
Miniature circuit breaker provided by novel can accomplish that volume reduces and accomplish to realize instantaneous short circuit, overload long delay and short circuit
Short delay three section protection.The reliability and security of power supply is improved comprehensively.
It is emphasized that in the description of the present application, it is to be understood that term " on ", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the application and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as the limitation to the application.
Term " first ", " second " etc. are only used for distinguishing description in the description of the present invention, and should not be understood as referring to
Show or imply relative importance.
The embodiment to the miniature circuit breaker of the utility model and the advantage of the utility model are illustrated above.Such as
It is upper described, for the utility model miniature circuit breaker specific features as shape, size and position can be to disclosed in above-mentioned
Feature is specifically designed, these designs are that those skilled in the art can be realized.Moreover, each technology of above-mentioned disclosure is special
Sign is not limited to disclosed and other features combinations, and those skilled in the art can also carry out each according to the purpose of utility model
Other combinations between technical characteristic, are subject to the purpose for realizing the utility model.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the protection scope of the utility model.
Claims (4)
1. a kind of selectivity small-sized DC breaker, which is characterized in that left extremely breaking in Terminal Power Distribution System including being connected on
Device (100) and right pole breaker (200)；
The left pole breaker (100) includes left pole outer housing (101), left pole inlet wire connecting terminal (102), left pole outlet wiring
Terminal (103), electromagnetism wink move system (104), left pole movable contact system (105), left pole static contact (106), left pole lock
(107), left pole tripping (108), left pole Handleset (109), Zuo Jishuan gold component (110) and left pole connecting rod (111)；
The left pole static contact (106) is fixedly installed on the inside of the left pole outer housing (101)；The left pole movable contact system
(105) inside of the left pole outer housing (101), the Zuo Jidong are pivotally mounted to by left pole moving contact shaft (1051)
Contact system (105) is rotated clockwise or counterclockwise around the left pole moving contact shaft (1051), and then makes the left pole
The movable contact of movable contact system (105) realizes combined floodgate or separating brake close to or far from the stationary contact of the left pole static contact (106)；
The left pole lock (107) and the left pole tripping (108) are articulated with the left pole movable contact system (105) above；It is described
Left pole lock (107), which is located at, to be moved on the path that system (104) motion end travels forward in the electromagnetism wink, dynamic by the electromagnetism wink
The movement of system (104) pushes left pole lock (107) rotation, and then jumps the left pole lock (107) and the left pole
It detains (108) and is detached from locked state；When the left pole lock (107) unlocks, left pole movable contact system (105) Xiang Yuan
Direction from the left pole static contact (106) moves and realizes separating brake；Meanwhile the left pole Handleset (109) is in handle spring
Under the action of to sub-gate position rotate；
The left pole lock (107) is also connect by the left pole connecting rod (111) with the Zuo Jishuan gold component (110)；It is described
Left pole lock (107) rotation is driven by the left pole connecting rod (111) when Zuo Jishuan gold component (110) heated bending,
The left pole lock (107) and the left pole tripping (108) is set to be detached from locked state and realize separating brake；
The right pole breaker (200) includes right pole outer housing (201), right pole inlet wire connecting terminal (202), right pole outlet wiring
Terminal (203), short deferred action structure (204), right pole movable contact system (205), right pole static contact (206), right pole lock
(207), right pole tripping (208), right pole Handleset (209), right extremely double golden components (210) and right pole connecting rod (211)；
The right pole static contact (206) is fixedly installed on the inside of the right pole outer housing (201)；The right pole movable contact system
(205) inside of the right pole outer housing (201) is pivotally mounted to by right pole moving contact shaft (2051), it is described right extremely dynamic
Contact system (205) is rotated clockwise or counterclockwise around the right pole moving contact shaft (2051), and then makes the right pole
The movable contact of movable contact system (205) realizes combined floodgate or separating brake close to or far from the stationary contact of the right pole static contact (206)；
The right pole lock (207) and the right pole tripping (208) are articulated with the right pole movable contact system (205) above；It is described
Right pole lock (207) is located on the path that short deferred action structure (204) motion end travels forward, and passes through the short delay
The action delay of movement structure (204) pushes right pole lock (207) rotation, and then makes the right pole lock (207) and institute
It states right pole tripping (208) and is detached from locked state；When the right pole lock (207) unlocks, the right pole movable contact system
(205) it is moved to the direction far from the right pole static contact (206) and realizes separating brake；Meanwhile the right pole Handleset (209)
It is rotated under the action of handle spring to sub-gate position；
The right pole lock (207) is also connect by the right pole connecting rod (211) with right extremely double golden components (210)；It is described
Right pole lock (207) rotation is driven by the right pole connecting rod (211) when right extremely double golden component (210) heated bendings,
The right pole lock (207) and the right pole tripping (208) is set to be detached from locked state and realize separating brake；
Wherein, the electromagnetic coil that the left pole inlet wire connecting terminal (102) and the electromagnetism wink move system (104) is electrically connected；
The electromagnetic coil and the left pole static contact (106) for moving system (104) the electromagnetism wink are electrically connected；The left pole moving contact system
It unites (105) and the Zuo Jishuan gold component (110) is electrically connected, the Zuo Jishuan gold component (110) connects with the left pole outlet
Line terminals (103) are electrically connected；
The left pole outlet connecting terminal (103) and the right pole inlet wire connecting terminal (202) are electrically connected；The right pole inlet wire
Connecting terminal (202) and the electromagnetic coil of the short deferred action structure (204) are electrically connected；The short deferred action structure
(204) electromagnetic coil and the right pole static contact (206) is electrically connected；The right pole movable contact system (205) and the right side
Extremely double golden components (210) are electrically connected, and right extremely double golden components (210) and the right pole outlet connecting terminal (203) are electrically
Connection；
The left pole inlet wire connecting terminal (102) and the right pole outlet connecting terminal (203) respectively with Terminal Power Distribution System
Positive and negative terminal is electrically connected.
2. selectivity small-sized DC breaker according to claim 1, which is characterized in that the electromagnetism wink moves system
It (104) include first coil skeleton (1041), the first dynamic iron core (1042), the first static iron core (1043), the first mandril (1044)
With the first electromagnetic coil (1045)；
First coil skeleton (1041) fixed setting, the outside of the first coil skeleton (1041) are arranged first electricity
Magnetic coil (1045)；The internal left end of the first coil skeleton (1041) is arranged first dynamic iron core (1042), and described the
First static iron core (1043) is fixedly mounted in the internal right end of one coil rack (1041)；The one of first mandril (1044)
It holds and is fixed with the right end of first dynamic iron core (1042), the other end of first mandril (1044) passes through the described first quiet iron
The centre bore of core (1043), and extend to outside first coil skeleton (1041) right side, and in first mandril
(1044) right end has mandril cap, and the mandril cap is continued in outside first coil skeleton (1041) right side；?
Under the electromagnetic force of first electromagnetic coil (1045), first dynamic iron core (1042) is moved right, and then pushes institute
The first mandril (1044) is stated to move right.
3. selectivity small-sized DC breaker according to claim 2, which is characterized in that the short deferred action structure
(204) include the second coil rack (2041), the second dynamic iron core (2042), the second static iron core (2043), the second mandril (2044),
Second electromagnetic coil (2045), spring (2046) and copper pipe (2047)；
Second coil rack (2041) fixed setting, the outside of second coil rack (2041) are arranged second electricity
Magnetic coil (2045)；Second dynamic iron core (2042) is arranged in the internal left end of second coil rack (2041)；Described
Second static iron core (2043) is fixedly mounted in the internal right end of two wires ring framework (2041)；Second static iron core (2043) edge
Axial setting ladder axis hole (20431), the ladder axis hole (20431) include the large diameter hole and diameter holes of perforation；The copper pipe
It (2047) is cylindrical tube, outer diameter matches with the diameter holes, middle part setting and the large diameter hole of the copper pipe (2047)
The protrusion (20471) to match, the copper pipe (2047) are stuck in the ladder axis hole (20431) by raised (20471),
The copper pipe (2047) is limited to move right and be detached from second coil rack (2041)；The one of second mandril (2044)
End is fixed with second dynamic iron core (2042), and the other end of second mandril (2044) extend into the copper pipe (2047)
In, the spring (2046) is partially located at the large diameter hole and is placed on outside the copper pipe (2047), the spring (2046)
Another part is placed on outside second mandril (2044), when not by the free state of electromagnetic force, in the spring (2046)
Elastic force effect under, on the one hand, so that the second dynamic iron core (2042) left side is close to second coil rack (2041)
On the other hand inner left wall makes described raised (20471) of the copper pipe (2047) be close to second static iron core (2043)
On the right side of large diameter hole；Also, it at this point, the right side of second mandril (2044) is located at the inside of the copper pipe (2047), does not stretch
The right side of second coil rack (2041) out.
4. selectivity small-sized DC breaker according to claim 3, which is characterized in that further include shaft (300) and hand
Sleeve (400)；
The left pole movable contact system (105) of the left pole breaker (100) passes through shaft (300) and the right pole breaker
(200) the right pole movable contact system (205) is connected；The left pole Handleset of the left pole breaker (100)
(109) it is connect by taper knob (400) with the right pole Handleset (209) of the right pole breaker (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550608.XU CN209487452U (en) | 2019-04-22 | 2019-04-22 | Selective small-sized DC breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550608.XU CN209487452U (en) | 2019-04-22 | 2019-04-22 | Selective small-sized DC breaker |
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| CN209487452U true CN209487452U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010421A (en) * | 2019-04-22 | 2019-07-12 | 北京北元电器有限公司 | Selective small-sized DC breaker and tripping guard method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010421A (en) * | 2019-04-22 | 2019-07-12 | 北京北元电器有限公司 | Selective small-sized DC breaker and tripping guard method |
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