CN200941366Y

CN200941366Y - Series-magnet electromagnetic permanent-magnet A.C. contactor

Info

Publication number: CN200941366Y
Application number: CN 200620077065
Authority: CN
Inventors: 翟跃成
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-01
Filing date: 2006-09-01
Publication date: 2007-08-29
Anticipated expiration: 2016-09-01

Abstract

The utility model provides a serial magnetic type electromagnetic permanent magnetic exchange contactor, comprising a supporting frame(1), an upper iron core(2), a lower iron core(3), an electromagnetic pulling in circuit(4), a diamagnetic circuit(5), permanent magnet(6), a base(7), a reverse spring(8) and a capacitance releasing device(9), with the upper iron core(2) fixed to the bottom of the support frame(1). Under the upper iron core(2) is the lower iron core(3), which is separated by the permanent magnet(6) and covered by the diamagnetic circuit(5), besides which is the electromagnetic pulling in circuit(4). The lower iron core(3), with the lower part fixed to the base(7) is a pole terminal of the permanent magnet, the diamagnetic circuit(5) connects with the capacitance releasing device(9) besides the lower iron core arranged on the base, and the reverse spring(8) is arranged between the base(7) and the support frame(1).

Description

String magnet type electromagnetic permanent magnet AC contactor

Technical field

The utility model relates to essential electronic element, is meant a kind of string magnet type electromagnetic permanent magnet AC contactor especially.

Background technology

The A.C. contactor of existing various series generally adopts U type or E sections core to power up that magnetic zygonema circle moves, the fixed contact contact.As long as A.C. contactor work, the electromagnetism pull-in winding just has electric current to pass through, and must consume certain electric energy; And along with the difference of the big low capacity of A.C. contactor that uses, the power consumption of pull-in winding from several watts (VA) to several hectowatts (VA), thereby the annual whole nation just will have several hundred million electric energy of spending (KVA/h) intangibly to be slatterned in using the A.C. contactor process, produce certain noise and thermal pollution simultaneously.

Summary of the invention

Technical problem to be solved in the utility model just is to overcome the high defective of power consumption that existing A.C. contactor exists, and a kind of string magnet type electromagnetic permanent magnet AC contactor that adopts string magnet type electromagnetic permanent-magnet structure is provided.String magnet type electromagnetic permanent magnet AC contactor of the present utility model is by support 1, upper core 2, lower core 3, electromagnetism pull-in winding 4, bucking coil 5, permanent magnet 6, base 7, bounce-back spring 8 and capacitor discharger 9 are formed, upper core 2 is fixed on the bottom of support 1, the below of upper core 2 is a lower core 3, permanent magnet 6 is placed in the lower core middle part that is divided into two, the outer bucking coil 5 that is with of lower core 3 peripheries, outside the bucking coil 5 is electromagnetism pull-in winding 4, lower core 3 is pole shoes of permanent magnet, lower core 3 lower ends are fixed on the base 7, bucking coil 5 is connected with the capacitor discharger 9 on lower core limit on being arranged on base, and 1 of base 7 and support are provided with bounce-back spring 8.Upper core 2 and lower core 3 adopt A ₃General steel plate is made, and lower core 3 also can adopt cast iron materials, and the lower core middle part that is divided into two is placed permanent magnet and made iron core form string magnetic-type structure.Capacitor discharger 9 is by diode D1, D2, D3, D4, D5, D6, D7, resistance R 1, R8, R9, capacitor C 1, C2, controllable silicon BG1, BG2, BG3 and switch CJ _1-1, mains switch TA forms, the negative terminal of diode D2 is connected in series with current-limiting resistance R1, diode D5, capacitor C 1 in the bridge rectifier that diode D1-D4 forms, the negative electrode of the negative terminal of C1 and controllable silicon BG1 joins, the anode of BG1 connects bucking coil 5; Negative terminal and the diode D6 anode of diode D5 join the negative terminal of D6 and bucking coil 5, switch CJ simultaneously _1-1, resistance R 9, controllable silicon BG3 the trigger electrode serial connection; The anode while of controllable silicon BG1 joins with the anode of controllable silicon BG2; Insurance circuit is made of diode D7, resistance R 8, controllable silicon BG2, mains switch TA, and mains switch TA normal opened contact and diode D7 and resistance R 8 also connect, the trigger electrode of another termination controllable silicon BG2 of R8, and the negative terminal of D7 connects bucking coil 5.When the work of string magnet type electromagnetic permanent magnet AC contactor, by capacitor discharger control A.C. contactor.The course of work is summarized as follows: when normally discharging, press down mains switch TA (breaking), the bridge circuit dead electricity that diode D1-D4 forms does not have commutating voltage output, capacitor C 2 dead electricity, controllable silicon BG1 obtains trigger voltage and conducting by resistance R 6 simultaneously, and capacitor C 1 is just by bucking coil 5 discharges, its discharging current produces and the identical magnetic field of permanent magnet 6 polarity, according to principle of same-sex repulsion, pole shoe top loss of excitation and discharging, A.C. contactor quits work.Start by closed loop self-checking circuit control contactor, the peak voltage of setting up on capacitor C 1 through bridge rectifier is about 1.3 times of supply voltage, and this voltage is added to the anode of controllable silicon BG1, BG2 by bucking coil 5.And by switch CJ _1-1The normally closed contact trigger voltage of resistance 9 of feeding as controllable silicon BG3; If when voltage release 9 and bucking coil 5 have fault not have direct voltage output, make supply voltage can not make its conducting through the anode that the electromagnetism pull-in winding is added to controllable silicon BG3 even press knob down switch QA, A.C. contactor can't start.A.C. contactor only could start when relevant elements such as voltage release 9 and bucking coil 5 are working properly, otherwise will refuse starting, and this has just guaranteed reliable release effectively.The instant-free of A.C. contactor when having guaranteed A.C. contactor capacitor discharger breaks down in the normal starting process by insurance circuit, can not instant-free and needs when discharging when occurring that A.C. contactor capacitor discharger in the normal starting and the course of work breaks down, need only mains switch TA by putting in place, normal opened contact is connected, supply voltage is delivered to controllable silicon BG2 anode through diode D7 and bucking coil 5, supply with controllable silicon BG2 trigger electrode trigger voltage by diode R8 simultaneously, make its conducting that A.C. contactor is discharged.No matter amount of capacity A.C. contactor continuous operation 1 year, power consumption accumulative total all 4 are spent less than 4 kilowatts/time.

Advantage of the present utility model just is to possess the repertoire of existing A.C. contactor owing to adopt string magnet type electromagnetic permanent-magnet structure.A.C. contactor is from being disconnected to connection work, and the electromagnetism pull-in winding only needs instantaneous energising, in case just outage automatically of work, so be not subjected to the influence of voltage ripple of power network, pull-in winding can be excused from a college course all the life; When operate as normal, the power moving, that fixed contact contacts is from the suction of the magnetic field of permanent magnet with string magnetic structure, and magnetic field of permanent magnet suction keeps weighing apparatus to help surely improving the life-span moving, fixed contact; Pull-in winding passes through with regard to no current in A.C. contactor action back simultaneously, thereby saved a large amount of electric energy, no matter amount of capacity A.C. contactor continuous operation 1 year, power consumption accumulative total all 4 is spent less than 4 kilowatts/time, energy-saving effect is considerable, and realized noiseless, do not had the heat radiation operation, purified environment; String magnet type electromagnetic permanent magnet AC contactor of the present utility model makes a large amount of inductive loads that reduce in the electrical network, has improved the power factor of power supply grid, and has had security reliability height, long service life, simple in structure, is easy to mass-produced characteristics.Therefore string magnet type electromagnetic permanent magnet AC contactor of the present utility model has the vast market promotion prospect.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described further;

Fig. 1 is the structural representation of the utility model string magnet type electromagnetic permanent magnet AC contactor;

Fig. 2 is the circuit diagram of the controlling organization of the utility model string magnet type electromagnetic permanent magnet AC contactor;

With reference to Fig. 1, string magnet electromagnetic permanent-magnet A. C. contactor of the present utility model by support 1, on Iron core 2, lower core 3, electromagnetism pull-in winding 4, bucking coil 5, permanent magnet 6, base 7, anti-Spring 8 and capacitor discharger 9 form. Upper core 2 and lower core 3 adopt A₃General steel plate is made, Wherein lower core 3 middle part that is divided into two is placed permanent magnet 6 and is made iron core form string magnetic-type structure.

With reference to Fig. 2, the circuit of the controlling organization of the utility model string magnet electromagnetic permanent-magnet A. C. contactor comprises capacitor discharger 9 circuit and electromagnetism pull-in winding 4 and bucking coil 5 etc., wherein capacitor discharger 9 is by diode D1, D2, D3, D4, D5, D6, D7, resistance R 1, R8, R9, capacitor C 1, C2, controllable silicon BG1, BG2, BG3 and switch CJ_1-1, power switch TA forms. Also include the elements such as press button QA and resistance R 4, R5, R6, R7 in the circuit.

Embodiment

Below be embodiment of the present utility model, the actual use of the present utility model is not limited to embodiment.

Embodiment 1, string magnet type electromagnetic permanent magnet AC contactor

Adopt the string magnet type electromagnetic permanent magnet AC contactor of the utility model structure, be applied to rural power grid.String magnet type electromagnetic permanent magnet AC contactor possesses the repertoire of existing A.C. contactor, owing to adopt string magnet type electromagnetic permanent-magnet structure, greatly reduces power consumption.

Claims

1, a kind of string magnet type electromagnetic permanent magnet AC contactor, it is characterized in that by support (1), upper core (2), lower core (3), electromagnetism pull-in winding (4), bucking coil (5), permanent magnet (6), base (7), bounce-back spring (8) and capacitor discharger (9) are formed, upper core (2) is fixed on the bottom of support (1), the below of upper core (2) is lower core (3), permanent magnet (6) is placed in the lower core middle part that is divided into two, the outer bucking coil (5) that is with of lower core (3) periphery, bucking coil (5) is outer to be electromagnetism pull-in winding (4), lower core (3) is the pole shoe of permanent magnet, lower core (3) lower end is fixed on the base (7), bucking coil (5) is connected with the capacitor discharger (9) on lower core limit on being arranged on base, and bounce-back spring (8) is set between base (7) and support (1).

2, string magnet type electromagnetic permanent magnet AC contactor according to claim 1 is characterized in that capacitor discharger 9 by diode D1, D2, D3, D4, D5, D6, D7, resistance R 1, R8, R9, capacitor C 1, C2, controllable silicon BG1, BG2, BG3 and switch CJ _1-1, mains switch TA forms, the negative terminal of diode D2 is connected in series with current-limiting resistance R1, diode D5, capacitor C 1 in the bridge rectifier that diode D1-D4 forms, the negative electrode of the negative terminal of C1 and controllable silicon BG1 joins, the anode of BG1 connects bucking coil (5); Negative terminal and the diode D6 anode of diode D5 join the negative terminal of D6 and bucking coil (5), switch CJ simultaneously _1-1, resistance R 9, controllable silicon BG3 the trigger electrode serial connection; The anode while of controllable silicon BG1 joins with the anode of controllable silicon BG2; Insurance circuit is made of diode D7, resistance R 8, controllable silicon BG2, mains switch TA, and mains switch TA normal opened contact and diode D7 and resistance R 8 also connect, the trigger electrode of another termination controllable silicon BG2 of R8, and the negative terminal of D7 connects bucking coil (5).

3, string magnet type electromagnetic permanent magnet AC contactor according to claim 1 is characterized in that it is A that upper core (2) adopts material ₃General steel plate, it is cast iron that lower core (3) adopts material.