CN101414530B - Electric appliance rapid disjunction motion mechanism based on main circuit current excitation - Google Patents
Electric appliance rapid disjunction motion mechanism based on main circuit current excitation Download PDFInfo
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- CN101414530B CN101414530B CN2008100721936A CN200810072193A CN101414530B CN 101414530 B CN101414530 B CN 101414530B CN 2008100721936 A CN2008100721936 A CN 2008100721936A CN 200810072193 A CN200810072193 A CN 200810072193A CN 101414530 B CN101414530 B CN 101414530B
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Abstract
The invention relates to an electrical appliance rapid breaking action mechanism which is based on current excitation of a main circuit, the electrical appliance rapid breaking action mechanism comprises a moving contact bridge, a moving contact, a static contact, a static contact bridge, a moving iron core, a current excitation static iron core, a current excitation coil of the main circuit, a current transformer, a current excitation control circuit, a computer control system and a support; when the rapid breaking action of an electrical appliance is required, the computer control system is used for control, the current of the main circuit is introduced into the current excitation coil of the main circuit via the current transformer and the current excitation control circuit, and the moving iron core drives the moving contact to rapid open and break the circuit under the action of the electromagnetic attraction, thereby ensuring the high breaking capacity of the electrical appliance, high electrical service life and reliable operation.
Description
Technical field
The present invention relates to the low voltage electrical apparatus technology field, particularly a kind of electric appliance rapid disjunction motion mechanism based on main circuit current excitation.
Background technology
Slow wave etc. declare utility model patent " the fault current quick-release mechanism of circuit breaker " (CN2785124Y) introduced a kind of fault current quick-release mechanism of circuit breaker, comprise tripping, snap close, draw bar, also comprise: a fixed core is equipped with the below of draw bar; One moving unshakable in one's determination, and the lower end that is fixedly connected on draw bar is relative with fixed core; A conductive plate, be positioned at fixed core near.When big fault current passed through conductive plate, near fixed core produced magnetic force, attracted moving iron core to move downward, and the draw bar that links to each other with moving iron core is threaded off operating mechanism rapidly, reaches the purpose of quick disjunction.Except this patent, the thermo magnetic trip release mechanism of present circuit breaker etc. adopts similar scheme.But these all are the forms that adopts mechanical trip mechanism and mechanical operating mechanism, and all can't realize control.In the epoch of intelligent electrical apparatus research, these all can't adapt to the requirement of production development, and its performance index can't realize leap in other words.These schemes can only be applied to normal circuit breaker, can't be applied to intelligent breaker, more can't be applied to intelligent integrated device.
Summary of the invention
The objective of the invention is to provide a kind of electric appliance rapid disjunction motion mechanism based on main circuit current excitation, this device is under computer control system control, it is excitatory much bigger than general voltage that the main circuit current excitation coil is fed, the electric current that rise-time constant is much smaller, moving unshakable in one's determination under the excitatory effect in magnetic field, directly drive moving contact, make the quick disjunction of electrical contact, and be that the Direct Action Type electrical equipment of core is the electric appliance rapid disjunction motion mechanism that has increased on the basis of straight-style ac contactor with main circuit current excitation with this mechanism, its moving iron core is excitatory and electrical equipment reaction spring in magnetic field, under the touch spring acting in conjunction, guaranteed the quick disjunction of moving contact.Owing to do not adopt mechanical trip mechanism and mechanical operating mechanism, electrical equipment is realized high breaking capacity and high electric life.In a word, this mechanism is under computer control system control, switching current excitation main circuit current excitation coil by main circuit current (normal running current, generic failure electric current or short circuit current), by the quick disjunction of moving directly drive moving contact unshakable in one's determination, thus the breaking capacity and the electric life of raising electrical equipment.
The object of the present invention is achieved like this, and it comprises movable contact bridge (A), moving contact (B), fixed contact (C), stationary contact bridge (D), moving (G) unshakable in one's determination, current excitation fixed core (E), main circuit current excitation coil (N), current transformer (P), current excitation control circuit (Z), computer control system (J), support (Y) is characterized in that: described moving iron core (G) directly drives movable contact bridge (A) and moving contact (B) motion by support (Y); Described current transformer (P) is enclosed within on the stationary contact bridge (D), and current transformer (P) output is connected with main circuit current excitation coil (N) by current excitation control circuit (Z); The Current Control output of the control input end of described current excitation control circuit (Z) and computer control system (J) joins; The general voltage magnetizing coil in line footpath of described main circuit current excitation coil (N) is thick, and the general voltage magnetizing coil of the number of turn is few.
When being short-circuited fault; computer control system Control current excitation control circuit; short circuit current passes through current transformer; the main circuit current excitation coil is in time switched on; because the coil parameter of main circuit current excitation coil and the effect of current source; the electromagnetic time constant of current excitation is very little; the electric current of main circuit current excitation coil rises rapidly; moving iron core rapid movement under the electromagnetic attraction effect; driving moving contact opens fast; realize the quick disjunction of circuit; particularly insert the novel electrical equipment of formation in former Direct Action Type or rotational electrical apparatus or the rotary type mechanical operating mechanism electrical equipment based on the electric appliance rapid disjunction motion mechanism of main circuit current excitation when this; when requiring to realize the short trouble protection; because moving iron core is directly by support drive moving contact rather than by mechanical trip mechanism and mechanical operating mechanism; moving unshakable in one's determination at the main circuit current excitation coil excitation electromagnetic attraction and electrical equipment under the acting in conjunction of reaction spring and touch spring; moving iron core has guaranteed the quick disjunction of electrical equipment, thereby increases substantially the breaking capacity of electrical equipment and realize the Based Intelligent Control that short trouble is protected.
When computer control system detect require the normal running current of disjunction main circuit or because of the overload; the phase failure; three-phase imbalance; overvoltage; faults such as under voltage (removing short trouble) are when requiring the disjunction main circuit; computer control system Control current excitation control circuit; main circuit current passes through current transformer; the main circuit current excitation coil is in time switched on; because the coil parameter of main circuit current excitation coil and the effect of current source; the electromagnetic time constant of current excitation is very little; the electric current of main circuit current excitation coil rises rapidly; moving iron core rapid movement under the electromagnetic attraction effect; driving moving contact opens fast; realize the quick disjunction of circuit; particularly insert the novel electrical equipment of formation in the former Direct Action Type electrical equipment based on the electric appliance rapid disjunction motion mechanism of main circuit current excitation when this; when requiring to realize above-mentioned normal or error protection disjunction; because moving iron core directly drives moving contact by support; moving unshakable in one's determination at the main circuit current excitation coil excitation electromagnetic attraction and electrical equipment under the acting in conjunction of reaction spring and touch spring; moving iron core has guaranteed the quick disjunction of electrical equipment, thereby increases substantially the electric life of electrical equipment and realized Based Intelligent Control.
Description of drawings
Fig. 1 is the embodiments of the invention organigram.
Fig. 2 is embodiments of the invention two structural representations.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, electric appliance rapid disjunction motion mechanism based on main circuit current excitation of the present invention, comprise movable contact bridge (A), moving contact (B), fixed contact (C), stationary contact bridge (D), moving (G) unshakable in one's determination, current excitation fixed core (E), main circuit current excitation coil (N), current transformer (P), current excitation control circuit (Z), computer control system (J), support (Y) is characterized in that: described moving iron core (G) directly drives movable contact bridge (A) and moving contact (B) motion by support (Y); Described current transformer (P) is enclosed within on the stationary contact bridge (D), and current transformer (P) output is connected with main circuit current excitation coil (N) by current excitation control circuit (Z); The Current Control output of the control input end of described current excitation control circuit (Z) and computer control system (J) joins; The general voltage magnetizing coil in line footpath of described main circuit current excitation coil (N) is thick, and the general voltage magnetizing coil of the number of turn is few; Described movable contact bridge (A), moving contact (B), fixed contact (C), the break contact that stationary contact bridge (D) is formed can have many groups.
When being short-circuited fault, computer control system (J) is by current excitation control circuit (Z) Control current instrument transformer, short circuit current switches on main circuit current excitation coil (N) by current transformer (P) immediately, because the electromagnetic time constant of main circuit current excitation coil (N) is little and under the effect of current source, moving (G) unshakable in one's determination is under the electromagnetic attraction effect, directly drive movable contact bridge (A) and moving contact (B) rapid movement by support (Y), moving contact (B) fixed contact (C) that speeds away, because moving unshakable in one's determination (G) directly drives moving contact (B) by support (Y) rather than by tripping mechanism and mechanical disjunction mechanism, make the quick disjunction of electrical contact, thereby improve the breaking capacity of electrical equipment and realize Based Intelligent Control.
When computer control system (J) detect require the normal running current of disjunction main circuit or because of the overload, the phase failure, three-phase imbalance, overvoltage, faults such as under voltage (removing short trouble) are when requiring the disjunction main circuit, computer control system (J) is by current excitation control circuit (Z) Control current instrument transformer, main circuit current switches on main circuit current excitation coil (N) by current transformer (P) immediately, because the electromagnetic time constant of main circuit current excitation coil (N) is little and under the effect of current source, moving (G) unshakable in one's determination is under the electromagnetic attraction effect, directly drive movable contact bridge (A) and moving contact (B) rapid movement by support (Y), moving contact (B) fixed contact (C) that speeds away, make the quick disjunction of electrical contact, thereby improve the electrical equipment electric life and realize Based Intelligent Control.
Being applied in Direct Action Type electrical equipment with the present invention below is example, and the present invention is further illustrated.As shown in Figure 2, described Direct Action Type electrical equipment comprises movable contact bridge (A), moving contact (B), fixed contact (C), stationary contact bridge (D), moving (G) unshakable in one's determination, current excitation fixed core (E), main circuit current excitation coil (N), current transformer (P), current excitation control circuit (Z), computer control system (J), support (Y), reaction spring (H), voltage magnetizing coil (K), the excitatory fixed core of voltage (V), voltage magnetizing coil control circuit (X), it is characterized in that: described moving iron core (G) directly drives movable contact bridge (A) and moving contact (B) motion by support (Y), current excitation fixed core (E) is separately fixed on the appliance base with the excitatory fixed core of voltage (V), supply voltage (U) is received voltage magnetizing coil (K) by voltage magnetizing coil control circuit (X), the control end of the voltage control output of described computer control system (J) and voltage magnetizing coil control circuit (X) joins, described current transformer (P) is enclosed within on the stationary contact bridge (D), current transformer (P) output is connected with main circuit current excitation coil (N) by current excitation control circuit (Z), and the Current Control output of the control input end of described current excitation control circuit (Z) and computer control system (J) joins.
When electrical equipment normally moves, computer control system J is by voltage magnetizing coil control circuit X control voltage magnetizing coil K energising, moving G unshakable in one's determination is in attracting state with the excitatory fixed core V of voltage under the action of a magnetic field, moving contact B is in fixed contact C and contacts "on" position, when detecting short trouble, computer control system J takes place, computer control system J is by voltage magnetizing coil control circuit X control voltage magnetizing coil K outage, simultaneous computer control system J is by current excitation control circuit Z Control current instrument transformer, short circuit current switches on main circuit current excitation coil N by current transformer P immediately, because the electromagnetic time constant of main circuit current excitation coil N is little and under the effect of current source, moving G unshakable in one's determination is under electromagnetic attraction and reaction spring H and touch spring acting in conjunction, directly drive movable contact bridge A and moving contact B rapid movement by support Y, the moving contact B fixed contact C that speeds away, because moving G unshakable in one's determination directly drives moving contact B by support Y rather than by tripping mechanism and mechanical disjunction mechanism, make the quick disjunction of electrical contact, thereby improve the breaking capacity of electrical equipment and realize Based Intelligent Control.
When computer control system J detect require the normal running current of disjunction main circuit or because of the overload, the phase failure, three-phase imbalance, overvoltage, faults such as under voltage (removing short trouble) are when requiring the disjunction main circuit, computer control system J is by voltage magnetizing coil control circuit X control voltage magnetizing coil K outage, simultaneous computer control system J is by current excitation control circuit Z Control current instrument transformer, main circuit current switches on main circuit current excitation coil N by current transformer P immediately, because the electromagnetic time constant of main circuit current excitation coil N is little and under the effect of current source, moving G unshakable in one's determination is under electromagnetic attraction and reaction spring H and touch spring acting in conjunction, directly drive movable contact bridge A and moving contact B rapid movement by support Y, the moving contact B fixed contact C that speeds away, because moving G unshakable in one's determination directly drives moving contact B by support Y, make the quick disjunction of electrical contact, thereby improve the electric life of electrical equipment and realize Based Intelligent Control.
Claims (3)
1. the electric appliance rapid disjunction motion mechanism based on main circuit current excitation comprises movable contact bridge (A), moving contact (B), fixed contact (C), stationary contact bridge (D), moving (G) unshakable in one's determination, current excitation fixed core (E), main circuit current excitation coil (N), current transformer (P), current excitation control circuit (Z), computer control system (J), support (Y) is characterized in that: described moving iron core (G) directly drives movable contact bridge (A) and moving contact (B) motion by support (Y); Described current transformer (P) is enclosed within on the stationary contact bridge (D), and current transformer (P) output is connected with main circuit current excitation coil (N) by current excitation control circuit (Z); The Current Control output of the control input end of described current excitation control circuit (Z) and computer control system (J) joins; The general voltage magnetizing coil in line footpath of described main circuit current excitation coil (N) is thick, and the general voltage magnetizing coil of the number of turn is few.
2. the electric appliance rapid disjunction motion mechanism based on main circuit current excitation according to claim 1, it is characterized in that described electrical equipment is Direct Action Type electrical equipment, it also comprises: reaction spring (H), voltage magnetizing coil (K), the excitatory fixed core of voltage (V), voltage magnetizing coil control circuit (X), it is characterized in that: described current excitation fixed core (E) is separately fixed on the appliance base with the excitatory fixed core of voltage (V), supply voltage (U) is received voltage magnetizing coil (K) by voltage magnetizing coil control circuit (X), and the control end of the voltage control output of described computer control system (J) and voltage magnetizing coil control circuit (X) joins.
3. the electric appliance rapid disjunction motion mechanism based on main circuit current excitation according to claim 1 and 2 is characterized in that: described movable contact bridge (A), and moving contact (B), fixed contact (C), (break contact that D forms has many groups to the stationary contact bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100721936A CN101414530B (en) | 2008-11-25 | 2008-11-25 | Electric appliance rapid disjunction motion mechanism based on main circuit current excitation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100721936A CN101414530B (en) | 2008-11-25 | 2008-11-25 | Electric appliance rapid disjunction motion mechanism based on main circuit current excitation |
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| Publication Number | Publication Date |
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| CN101414530A CN101414530A (en) | 2009-04-22 |
| CN101414530B true CN101414530B (en) | 2010-12-22 |
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| CN2008100721936A Expired - Fee Related CN101414530B (en) | 2008-11-25 | 2008-11-25 | Electric appliance rapid disjunction motion mechanism based on main circuit current excitation |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054632B (en) * | 2011-01-14 | 2013-04-17 | 福州大学 | Split-phase type intelligent low-voltage double-breakpoint integrated electrical appliance with quick electromagnetism repulsive force mechanism |
| CN102751116B (en) * | 2012-07-19 | 2014-12-03 | 福州大学 | Quick electromagnetic repulsion mechanism based on fault current energy and change rate and application of quick electromagnetic repulsion mechanism |
| CN102931032B (en) * | 2012-10-30 | 2014-12-03 | 福州大学 | Low-voltage AC/DC control and protection electrical appliance |
| CN105958438A (en) * | 2016-04-29 | 2016-09-21 | 广东万家乐燃气具有限公司 | Circuit three-pole disconnecting device |
| CN107478889B (en) * | 2016-11-01 | 2020-07-10 | 西安交通大学 | Electromagnetic type short-circuit current rapid identification device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829092B1 (en) * | 1995-05-30 | 1999-01-20 | Siemens Aktiengesellschaft | Electromagnetic switch |
| CN2415456Y (en) * | 2000-04-10 | 2001-01-17 | 福州大学 | Intelligent AC contactor |
| EP1089308B1 (en) * | 1999-09-30 | 2005-02-23 | Siemens Aktiengesellschaft | Device for switching-on and switching-off of a power circuit |
| CN2701057Y (en) * | 2004-06-11 | 2005-05-18 | 福州大学 | Combined type intelligent AC contactor |
| CN1841614A (en) * | 2005-09-27 | 2006-10-04 | 福州大学 | Combined type intelligent alternating-current control and protector |
-
2008
- 2008-11-25 CN CN2008100721936A patent/CN101414530B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0829092B1 (en) * | 1995-05-30 | 1999-01-20 | Siemens Aktiengesellschaft | Electromagnetic switch |
| EP1089308B1 (en) * | 1999-09-30 | 2005-02-23 | Siemens Aktiengesellschaft | Device for switching-on and switching-off of a power circuit |
| CN2415456Y (en) * | 2000-04-10 | 2001-01-17 | 福州大学 | Intelligent AC contactor |
| CN2701057Y (en) * | 2004-06-11 | 2005-05-18 | 福州大学 | Combined type intelligent AC contactor |
| CN1841614A (en) * | 2005-09-27 | 2006-10-04 | 福州大学 | Combined type intelligent alternating-current control and protector |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-242768A 1993.09.21 |
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