CN2183045Y

CN2183045Y - AC electricity generator

Info

Publication number: CN2183045Y
Application number: CN 94201061
Authority: CN
Inventors: 庄天贯
Original assignee: ZHUANG TIAN GUAN
Current assignee: ZHUANG TIAN GUAN
Priority date: 1994-01-11
Filing date: 1994-01-11
Publication date: 1994-11-16
Anticipated expiration: 2004-01-11

Abstract

The utility model relates to an alternating current generator. Except for comprising the existing rotor assembly, stator assembly, current regulator and other members, the alternating current generator has a rotor coil transferring device. The structure of the rotor coil transferring device is that the rear end of a rotor shaft is equipped with an insulating sleeve on the hollow part; an electric conductor, which is arranged in the insulating sleeve, passes through the sleeve and the through hole of the rotor shaft and is connected with a rotor coil; the opening end of the sleeve is equipped with a wire board; the inside and the outside of the contact point on middle part of the wire board are connected with the electric conductor in the sleeve and outer conducting wires. The alternating current generator is also equipped with a delta-Y connection converter and a current regulator. By removing the electric brush, the electric brush carrier, and the slip ring, the alternating current generator changes the transferring structure of the existing rotor coil, and it improves the transference reliability, moreover, the power output of generator can be altered in time, and the alternating current generator also has the function of over-current protection for the generator.

Description

AC electricity generator

The utility model relates to a kind of alternating current generator.

Existing silicon rectification generator mainly partly is made up of field frame assembly, rotor assembly, brush carrier and rectifying device etc., connection commonly used is a Y connection, when hanging down medium speed, output performance is better, and the output when low medium speed of the generator of star-star-delta connection Y-Y-is few, and in its power output big more than 25% than Y connection during high rotating speed.In addition, lack the equipment of control generator maximum output current usually, cause the damage of generator easily.Simultaneously, the transferring structure of existing rotor field coil is made up of brush, brush carrier and slip ring etc., because of friction generates heat, causes transfer reliability poor, is easy to generate fault, and maintenance load is big.

The purpose of this utility model is to provide a kind of rotor coil transfer reliability height, and the connection of conversion generator can limit the alternating current generator of generator peak power output with conversion output current and power at any time.

The utility model comprises rotor assembly, field frame assembly, rotor coil transfer device, front and rear cover, belt pulley, protective cover, fan, rectifier and sealing gasket, also is provided with connection converter and current regulator.

The rear end that said rotor coil transfer device is an armature spindle is hollow, the hollow place establishes insulating case in the axle in the armature spindle rear end, in axle, establish electric conductor in the insulating case, a side and the armature spindle by the bottom of insulating case established a through hole in axle, electric conductor in the axle in the insulating case joins by the positive terminal of through hole and rotor coil, the openend of insulating case is established the casing terminal block in the axle, the casing terminal block is fixed on the shell of generator, conductive contact is established at casing terminal block center, electric conductor in its inboard conductive contact and the axle in the insulating case contacts, and its outside conductive contact connects outer conductor.

Said connection converter is △-Y shape three-phase connection converter, form by base, binding post and line and plug-in strip, 3 groups of coilings (6 line ends) of generator are connected on respectively on 6 binding posts of connection converter, and other 3 output wiring terminals meet 3 of rectifier and connect end.

Said current regulator is the reed that pair of parallel is placed, and establishes relative conductive contact respectively in the same end inboard of two reeds, wherein also establishes an iron plate on the outside of a reed, and the other end of two reeds is fixed on the generator casing by insulator.The reed of band iron plate connects voltage regulator, and another reed switches through the positive terminal of subcoil.

Being located in the axle in the rotor coil transfer device electric conductor in the insulating case can be made up of spring and carbon brush, and spring places the bottom of axle insulating case, and carbon brush places the spring other end, and the inboard conductive contact of the other end of carbon brush and casing terminal block joins; Also can in axle, fill metal (for example copper) in the insulating case and join at the inboard conductive contact that running-on is established a Metal Ball and casing terminal block in addition.

The utility model is owing to change the transferring structure of original rotor field coil, remove brush, brush carrier and the slip ring of existing generator, hollow is processed in the armature spindle rear end, makes field coil one end (negative pole) connect armature spindle (ground connection), and the field coil other end (positive pole) transmits input from the axle center, reduce friction like this, do not produce heat, improved transfer reliability, and avoid safeguarding, manufacturing process is simple, and production cost descends.In addition, owing to set up the connection converter, good according to the generator of Y connection output performance when low, the medium speed, and the output when low, medium speed of the generator of star-star-delta connection Y-Y-is little, and when middle and high rotating speed power output than the big characteristics more than 25% of power output of Y connection, can in time regulate and control the connection converter, change the connection of generator, reach the purpose of timely conversion generator output current and power output.Simultaneously, owing to set up current regulator on electricity generator stator core, when generator excess load or rectifier puncture, the effect of generator overcurrent protection is played in the current regulator action.

The utility model is particularly suitable for being applied on the equipment such as automobile.

Fig. 1 is a section of structure of the present utility model.

Fig. 2 is rotor coil transfer device figure of the present utility model.

Fig. 3 is for adopting carbon brush, the spring structure chart as the electric conductor in the insulating case in the axle.

Fig. 4 fills the structure chart of copper as the electric conductor in the insulating case in the axle for adopting.

Fig. 5 is △-Y connection converter electrical schematic diagram.

Fig. 6 is △-Y connection converter outline drawing.

Fig. 7 is current regulator of the present utility model and excitation circuit figure.

As shown in Figure 1; the utility model is by rotor assembly (1), field frame assembly (2), rotor coil transfer device (3), front and rear cover (4; 5), parts such as belt pulley (6), protective cover (7), fan (8), rectifier (9), △-Y shape three-phase connection converter (10), current regulator (11), sealing gasket (12) form, and are all identical with existing generator except that rotor coil transfer device, △-Y shape three-phase connection converter and current regulator.

Said rotor coil transfer device is referring to Fig. 2, rear end at armature spindle (15) is hollow, be the hollow place in the armature spindle rear end and establish insulating case in the axle (16), in axle, be provided with electric conductor (17) in the insulating case, lean on bottom one side and the armature spindle of insulating case established a through hole (18) in the axle, and electric conductor (17) joins by the positive terminal of this through hole and rotor coil (14).(12,13) among the figure are magnetic pole.

See Fig. 3 and Fig. 4, electric conductor (17) can be made up of spring (19) and carbon brush (20), also can replace by filling metal (21) and Metal Ball (22), for example irritates post copper.The openend of insulating case is established casing terminal block (23) in axle, the casing terminal block is fixed on the shell of generator, its conductive contact (24) is inboard to contact with carbon brush (20) or Metal Ball (22) in the insulating case in the axle, is connected with outer conductor (25) outside its conductive contact.

As shown in Figure 5 and Figure 6, △-Y shape three-phase connection converter is by base (26), binding post (D ₁～D ₆), line and plug-in strip (27) form, 3 groups of coilings of generator are connected on binding post (D respectively ₁～D ₆) on, other 3 output wiring terminals meet 3 of rectifier and connect end.△-Y shape three-phase connection conversion can be adopted following transform method, changes connection with choke line (being used for automobile) pulling; Change connection with the pulling of unidirectional electrical magnet valve; Change connection with the three-phase electromagnetic relay, or the like.

As Fig. 1 and shown in Figure 7, the reed of placing in the pair of parallel of current regulator (28,29) pair of conductive contact (30 is established in an end inboard, 31), an iron plate (32) is established in the outside of reed (28), the other end of two reeds is fixed on the generator casing by insulator (33), and two reeds join with the positive terminal of voltage regulator (34) and field coil respectively.Ignition switch (35) is connected with storage battery E, armature terminals and voltage regulator, power consumption equipment respectively.

Claims

1, a kind of alternating current generator comprises rotor assembly, field frame assembly, rotor coil transfer device, front and rear cover, belt pulley, protective cover, fan, rectifier and sealing gasket, it is characterized in that

(1), said rotor coil transfer device is to be hollow in the rear end of armature spindle, the hollow place establishes insulating case in the axle in the armature spindle rear end, in axle, establish electric conductor in the insulating case, a side and the armature spindle by the bottom of insulating case established a through hole in axle, electric conductor in the axle in the insulating case joins by the positive terminal of through hole and rotor coil, the openend of insulating case is established the casing terminal block in the axle, the casing terminal block is fixed on the shell of generator, establish conductive contact at casing terminal block center, electric conductor in its inboard conductive contact and the axle in the insulating case contacts, and its outside conductive contact connects outer conductor;

(2), be provided with △-Y shape three-phase connection converter, form by base, binding post and line and plug-in strip, 6 binding posts of connection converter are 6 line ends of 3 groups of coilings of sending and receiving motors respectively, 3 of other 3 output wiring terminals and rectifier connect end;

(3), be provided with current regulator, it comprises the reed that pair of parallel is placed, same end inboard at two reeds is established relative conductive contact respectively, wherein also establish an iron plate on the outside of a reed, the other end of two reeds is fixed on the generator casing by insulator, the reed of band iron plate connects voltage regulator, and another reed switches through the positive terminal of subcoil.

2, alternating current generator as claimed in claim 1, it is characterized in that the electric conductor in the insulating case is made up of spring and carbon brush in the said axle, spring places the bottom of axle insulating case, and carbon brush places the spring other end, and the inboard conductive contact of the other end of carbon brush and casing terminal block joins.

3, alternating current generator as claimed in claim 1 is characterized in that in the said axle electric conductor in the insulating case by filling metal in the insulating case in the axle, and joins at the inboard conductive contact that running-on is established a Metal Ball and casing terminal block in addition.