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Wire and cable equipment continuous annealing direct-current control system

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 to thyristor and other problems, to save energy, increase control stability, and facilitate maintenance.

Inactive Publication Date: 2015-10-28
上海鼎凡电工机械股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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  • Wire and cable equipment continuous annealing direct-current control system

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Embodiment

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

[0021] The DC control system also includes a control device, which 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 transformer 3, and the PWM wave generator 63 is connected to the primary side of the transformer 3. The primary rectifier circuit 5 is electrically conne...

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PUM

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Abstract

The invention relates to a wire and cable equipment continuous annealing direct-current control system. The system comprises a power supply, an air switch, a step-down transformer, a secondary rectifier circuit, and a piece of wire and cable drawing equipment, which are connected in sequence. The system further comprises a primary rectifier circuit arranged between the air switch and the primary side of the step-down transformer. The primary rectifier circuit is a three-phase bridge circuit, and adopts a silicon controlled rectifier as a switching element. The secondary rectifier circuit is a bridge full-wave rectifier circuit, and adopts a rectifier tube as switching element. Compared with the prior art, the wire and cable equipment continuous annealing direct-current control system of the invention has the advantages of failure rate reduction, stable control, good cooling performance, operation environment improvement, 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 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 tim...

Claims

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Application Information

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Patent Type & Authority Applications(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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