CN2272163Y

CN2272163Y - Parallel superpower imtermediate-frequency ac arc-welding generator

Info

Publication number: CN2272163Y
Application number: CN 96220636
Authority: CN
Inventors: 吴文达
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-05
Filing date: 1996-08-05
Publication date: 1998-01-07
Anticipated expiration: 2006-08-05

Abstract

The utility model relates to a parallel superpower imtermediate-frequency AC arc-welding generator which is driven by a high-power prime mover (an electric motor of more than 25 horsepower, a gasoline engine or a diesel engine). The parallel superpower imtermediate-frequency AC arc-welding generator is composed of two same three-phase stators (6) with a plurality of pairs (10 pairs or 12 pairs) of N-S poles, and two same claw-pole-typed rotors (2) or two same distributed polar rotors (2); one claw-pole-typed rotor (2) or one distributed polar rotor (2) has a plurality of pairs (10 pairs or 12 pairs) of N-S poles, the claw-pole-typed rotors (2) or the distributed polar rotors (2) are arranged on a generator shaft (1), and the two same three-phase stators (6) with a plurality of pairs (10 pairs or 12 pairs) of N-S poles are arranged among a front end cap (3) of the generator, a rear end cover (4) of the generator and a shell body (5) of a positioning outer ring. A same group of excitation loops which can adjust the magnitude of excitation current, supplies the two same rotors (2) whose homonymous ends are mutual connected in parallel to excite. After the two same three-phase stators (6) with multiple poles are respectively connected in parallel according to the phases of A, B and C, the two same three-phase stators (6) multiple poles are delivered to a three-phase bridge-typed rectifier to be rectificated to supply welding. The utility model mainly has the advantages of similar products, such as small volume, light weight, convenient welding operation in field, and the generation of intermediate-frequency alternating current; simultaneously, the parallel superpower imtermediate-frequency AC arc-welding generator solves the problems that power is low, and high-current weld can not be satisfied in the similar products.

Description

Parallel super high power midfrequent AC arc generator

The utility model relates to a kind of super high power midfrequent AC arc generator that is driven by high-power prime mover (motor more than 25 horsepowers or vapour, diesel engine etc.).

Existing such welding machine, promptly multipole stator, rotator type intermediate frequency arc generator because it is in light weight, volume is little, be used for advantages such as field work is convenient and extremely the user like that but it can not produce the welding current of super high power.This is that the stator of generator, rotor have to be designed to many to the N-S utmost point because it will produce electric current of intermediate frequency and send big electric current under the specified rotating speed of prime mover (being generally 3200 rev/mins-3600 rev/mins).But making, many results to the N-S utmost point in the stator piece of limited diameter, can only obtain the stator piece jet-bedding quantity of generator more (being generally more than 60 grooves) like this on the annulus less (generally at 45MM ²About) stator slot of rule area, so will manyly (surpass 15MM in that the less stator slot of this series products is embedded ²The cross section) stator coil is impossible, thereby will obtain bigger current capacity, and the output that realizes big welding current is impossible.

The purpose of this utility model provides a kind of advantage that can keep original generator of the same type, and can improve the parallel super high power midfrequent AC arc generator of output of a generator.

The utility model is achieved in that to be installed in parallel two on generator shaft (1) identical many to (10 pairs or 12 pairs) Lundell of the N-S utmost point or the rotor of hidden pole type (2), on the relative position at rotor (2) place, by front end of shield (3), rear end cap (4), the stator (6) of two identical three-phases multipole (10 pairs or 12 pairs) N-S utmost point of location and installation is formed between outer shroud housing (5) three of location, and the neutral surface that guarantees the rotor that each stator is corresponding with it when installing overlaps, and vertical with motor shaft (1), to reach magnetic power that the rotor field produced cutting stator coil fully.Two identical rotors (2) are supplied with its exciting current by the field circuit of same scalable exciting current size and are carried out excitation after carrying out parallel connection by its end of the same name respectively.To reach two identical rotors (2) purpose of identical excitation field intensity is arranged.

Two identical stators (6) are respectively by the order of its rule, after promptly A, B, C three-phase carry out parallel connection, supply with welding output after delivering to the three-phase bridge rectifier rectification.

The utility model is owing to adopt above structure, so have the following advantages: because generator has adopted multipolar system stator (6) and multipolar system rotor (2), so institute's electric current that sends still is an intermediate frequency, thereby generator is in light weight, volume is little, has solved the shortcoming that can not embed the long-pending stator conductor in heavy in section in generator unit stator of the same type (6) groove and enlarge generator capacity simultaneously.This is the purpose of this utility model just also.

The utility model is illustrated by following pattern and instantiation: Fig. 1 is a structural representation of the present utility model.

Example: with having two stators (6) of 10 pairs of N-S utmost points and rotor (2) that two have 10 pairs of N-S utmost points integral type generator in parallel by described structure formation, at prime mover is 36 horsepowers, rotating speed is 3200 rev/mins, generator with shaft coupling (8) with the coaxial condition that connects of prime mover (9) under, its welding current is output as 60A-400A.

Claims

1, a kind of parallel super high power midfrequent AC arc generator that is used to weld, it is characterized in that being installed in parallel on the generator shaft (1) two identical many Lundell or distributed polar rotors (2) to the N-S utmost point, on the relative position at rotor (2) place, by front end of shield (3), rear end cap (4), the many stators of two identical three-phases of location and installation (6) between outer shroud housing (5) three of location to the N-S utmost point, the neutral surface that guarantees the rotor that each stator is corresponding with it overlaps, and it is vertical with generator shaft (1), generator shaft (1) is by being loaded on front end housing (3) surely, bearing (7) supporting on the rear end cap (4).

2, parallel super high power midfrequent AC arc-welding electric welding generator according to claim 1, after it is characterized in that two identical rotors (2) carry out parallel connection by its end of the same name respectively, supply with its exciting current by the field circuit of same group of scalable exciting current size and carry out excitation.

3, parallel super high power midfrequent AC arc generator according to claim 1 is characterized in that two identical stators (6) respectively by after its A, B, the parallel connection of C phase sequence, supplies with welding after delivering to the three-phase bridge rectifier rectification.

4, parallel super high power midfrequent AC arc generator according to claim 1 is characterized in that the integral type generator is by on the coaxial output shaft that is connected in prime mover (9) of shaft coupling (8).