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A DC control system for continuous annealing of wire and cable equipment

A DC control system, wire and cable technology, applied in the direction of irreversible AC power input conversion to DC power output, cooling/ventilation/heating transformation, etc., can solve the problem of low equipment utilization, failure of thyristor, damage of thyristor etc. to save energy, increase control stability, and facilitate maintenance

Inactive Publication Date: 2018-03-06
上海鼎凡电工机械股份有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The traditional DC control system for continuous annealing of wire and cable equipment controls the secondary side of the transformer. Since the secondary side current of the step-down transformer is very large, although the existing thyristor controls the small current relatively stable, if it encounters the secondary side In the case of large current on the secondary side, it will seriously heat up, coupled with the high temperature of the working environment, so the probability of failure of the thyristor on the secondary side is very high in actual production, and the thyristor on the secondary side is water-cooled. Once the negligence of the operator causes the radiator to lack water, the high temperature will damage the thyristor in a short period of time, causing the machine to be in the maintenance state for a long time, and the equipment utilization rate is low

Method used

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  • A DC control system for continuous annealing of wire and cable equipment

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Embodiment

[0020] Such as figure 1 As shown, a continuous annealing DC control system for wire and cable equipment includes a power supply 1, an air switch 2, a step-down transformer 3, a secondary rectifier circuit 4, and a wire and cable drawing device connected in sequence. The system also includes an air switch 2 and the primary side of the step-down transformer 3 between the primary rectifier circuit 5, the primary rectifier circuit 5 is a three-phase bridge circuit, and uses SCR as the switching element, the secondary rectifier circuit 4 is a bridge full-wave rectifier, using rectification The tube serves as a switching element.

[0021] The DC control system also includes a control device. The control device includes a current collector 61, a first controller 62, and a PWM wave generator 63 connected in sequence. The current collector 61 is connected to the primary side of the step-down transformer 3. The PWM wave generator 63 is connected to the primary rectifier circuit 5 circuit....

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Abstract

The invention relates to a continuous annealing DC control system for wire and cable equipment, which includes a power supply, an air switch, a step-down transformer, a secondary rectifier circuit, and wire and cable wire drawing equipment connected in sequence. The system also includes an air switch and a step-down transformer. The primary rectification circuit between the primary sides, the primary rectification circuit is a three-phase bridge circuit, and a thyristor is used as a switching element, and the secondary rectification circuit is a bridge full-wave rectification, and a rectifier tube is used as a switch element. Compared with the prior art, the invention has the advantages of reduced failure rate, stable control, good cooling performance, improved operating environment and the like.

Description

Technical field [0001] The invention relates to the field of wire and cable equipment manufacturing, in particular to a continuous annealing DC control system for wire and cable equipment. Background technique [0002] The traditional continuous annealing DC control system of wire and cable equipment controls the secondary side of the transformer. Because the secondary side current of the step-down transformer is very large, although the existing thyristor control small current is relatively stable, if it encounters the secondary side In the case of high current on the side, serious heat will be generated. In addition to the high temperature of the working environment, the probability of failure of the thyristor on the secondary side in actual production is very high, and the thyristor on the secondary side is water-cooled. Once the operator's negligence causes the radiator to lack water, the high temperature will damage the thyristor in a short period of time, causing the machin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/40H05K7/20
Inventor 赵小军许式方
Owner 上海鼎凡电工机械股份有限公司
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