CN214254142U - Three-phase absorption capacitor module - Google Patents

Abstract

The utility model discloses an absorptive electric capacity module of three-phase, including casing and condenser, the quantity of condenser is three, and three condenser sets up in the casing side by side, and the casing is equipped with three pin-out, and three pin-out is connected with three condenser respectively. The three pins of drawing forth design according to the interval between rectifier bridge 1, 2, 3 feet, directly with the screw locking on corresponding interval rectifier bridge's 1, 2, 3 feet, simple to operate is swift, has reduced the stray inductance interference of connection of electric lines, has reached the absorptive effect of anti-interference.

Description

Three-phase absorption capacitor module

Technical Field

The utility model relates to a welding machine, concretely relates to protection circuit of contravariant welding machine.

Background

The current power grid occasions used by the inverter welding machine are very complex, temporary cables built outdoors supply power, outdoor generators supply power, and factory standardized power grids supply power, and the combination of the power supply grids often causes large power grid fluctuation, waveform distortion and the like; and the inverter welding machine can cause interference to the power grid when working. In order to reduce or inhibit the interference of the power grid to welding machine equipment and reduce the interference fed back to the power grid by the welding machine, the inverter welding machine is provided with the protection circuit, and an essential component in the circuit is a capacitor. The current three-phase absorption protection circuit in the inverter welding machine is designed by using a special PCB (printed circuit board) assembled by three common capacitors (as shown in figure 1), or a protection circuit formed by manually combining three capacitors in the installation process and then connecting the three capacitors through wires. The defects of long connecting line, large parasitic inductance, weak anti-interference capability, short service life of the capacitor, inconvenient maintenance and the like cause great inconvenience and waste.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: the capacitor module special for the three-phase absorption protection circuit in the inverter welding machine is simple to install and convenient to maintain.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides an absorptive electric capacity module of three-phase, includes casing and condenser, and the quantity of condenser is three, and three condenser sets up in the casing side by side, and the casing is equipped with three pin-out, and three pin-out is connected with three condenser respectively.

The three pins of drawing forth design according to the interval between rectifier bridge 1, 2, 3 feet, directly with the screw locking on corresponding interval rectifier bridge's 1, 2, 3 feet, simple to operate is swift, has reduced the stray inductance interference of connection of electric lines, has reached the absorptive effect of anti-interference.

Drawings

The invention will be further explained with reference to the drawings:

FIG. 1 is a PCB circuit board for designing a three-phase absorption protection circuit of an inverter welding machine in the prior art;

FIG. 2 is a schematic diagram of a three-phase absorption protection circuit of an inverter welding machine using the three-phase absorption capacitor module of the present invention;

fig. 3 is a schematic diagram of the three-phase absorption capacitor module body 11 according to the present invention;

FIG. 4 is a schematic view A-A of FIG. 3;

FIG. 5 is an exploded view of FIG. 4;

fig. 6 is a schematic diagram of the three-phase absorption capacitor module cover 12 according to the present invention;

FIG. 7 is a bottom view of FIG. 6;

fig. 8 is the internal structure diagram of the three-phase absorption capacitor module of the present invention.

The symbols in the drawings illustrate that:

100. the utility model discloses a three-phase absorption capacitor module;

11. a body; 12. a cover body; 13. a front edge of the body; 14. a first concave clamping groove; 15. a positioning column; 16. a first clamping convex part; 17. a rear edge of the body; 18. a second concave clamping groove; 19. a second clamping convex part;

20. a lead-out pin; 21. connecting holes; 22. positioning holes;

30. the end of the capacitor.

Detailed Description

Referring to fig. 3, a three-phase absorption capacitor module includes a housing and three capacitors, the three capacitors are arranged in the housing in parallel, the housing is provided with three lead-out pins 20, and the three lead-out pins are respectively connected with the three capacitors.

The condenser adopts two-sided metallization material, and the casing adopts the PBT plastic, absorptive electric capacity module of three-phase have long service life, high frequency loss little, the interference killing feature is strong, simple to operate, the simple advantage of maintenance. The three condenser of the absorptive electric capacity module of three-phase make up the adjustment according to the interval between rectifier bridge 1, 2, 3 feet, as shown in fig. 2, the position relation between the three condenser can be: the three leading-out pins 20 are directly locked on the pins 1, 2 and 3 of the rectifier bridge with the corresponding intervals by screws at intervals of 23mm, 28mm, 33mm, 36mm, 52mm and 68 mm.

Alternatively, as shown in fig. 3, the leading-out pin 20 is a copper bar, and the leading-out pin is provided with a connecting hole 21 for locking on pins 1, 2 and 3 of the rectifier bridge with corresponding intervals.

As shown in fig. 3 and 6, the casing includes a body 11 and a cover 12, a first concave clamping groove 14 is provided on a front edge 13 of the body, as shown in fig. 4 and 5, a positioning column 15 is provided in the first concave clamping groove, a first clamping convex portion 16 capable of being matched with the first concave clamping groove is provided on the cover, and a positioning hole 22 capable of being matched with the positioning column is provided on the lead-out pin 20; a second concave clamping groove 18 is arranged on the rear edge 17 of the body, and a second clamping convex part 19 which can be matched with the second concave clamping groove is arranged on the cover body, as shown in fig. 7. In practice, three capacitors C1, C2, C3 (fig. 8) are mounted in the body 11, the end 30 of the capacitor is provided with a limiting hole which fits over the positioning post 15, after which the positioning hole 22 of the lead-out pin 20 fits over the positioning post 15, pressing against the end 30 of the capacitor. Then, the cover 12 is pushed forward from the rear direction relative to the body 11, the first clamping convex portion 16 is clamped into the first concave clamping groove 14, and the second clamping convex portion 19 is clamped into the second concave clamping groove 18, so that the body and the cover are tightly matched and then are encapsulated by epoxy resin, and the service life is prolonged.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (3)

1. A three-phase absorptive capacitance module comprising a housing and a capacitor, characterized in that: the number of the capacitors is three, the three capacitors are arranged in the shell in parallel, the shell is provided with three leading-out pins (20), and the three leading-out pins are respectively connected with the three capacitors.

2. The three-phase absorbing capacitive module of claim 1, wherein: the leading-out pin (20) is a copper bar, and is provided with a connecting hole (21).

3. The three-phase absorbing capacitive module of claim 2, wherein: the shell comprises a body (11) and a cover body (12), a first concave clamping groove (14) is formed in the front edge (13) of the body, a positioning column (15) is arranged in the first concave clamping groove, a first clamping convex part (16) capable of being matched with the first concave clamping groove is arranged on the cover body, and a positioning hole (22) capable of being matched with the positioning column is formed in the leading-out pin (20); a second concave clamping groove (18) is arranged on the rear edge (17) of the body, and a second clamping convex part (19) matched with the second concave clamping groove is arranged on the cover body.

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