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Heating power supply device of man-made diamond pressing machine

A synthetic diamond and heating power supply technology, applied in output power conversion devices, electrical components, high-efficiency power electronic conversion, etc., can solve the problems of positive and negative ion migration and accumulation, uneven current distribution, etc., achieve long conduction time, eliminate accumulation, and utilize high rate effect

Inactive Publication Date: 2008-12-03
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It can effectively eliminate the harm of single-phase loads to the power grid, and has no disadvantages of uneven current distribution caused by the skin effect, and can promptly solve the problem of positive and negative ions migrating and accumulating near the electrodes

Method used

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  • Heating power supply device of man-made diamond pressing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Examples of heating power supply devices for artificial diamond presses of the present invention figure 1 As shown, the three-phase 50Hz, 380V mains is directly connected to the primary winding of the three-phase power frequency transformer T, and the secondary of the transformer T has two windings with the same number of turns per phase, which are connected into a double reverse star circuit. The midpoints of the shaped circuit are connected together (point o), and connected to one end of the electrode of the synthetic diamond press chamber. 6 forward rectification thyristors TF1~TF6 and balance reactor LP form a forward current double reverse star phase-controlled rectification circuit, and 6 reverse rectification thyristors TR1~TR6 and balance reactor LP form a reverse current double reverse star phase-controlled rectification circuit circuit. The u phase of a star circuit on the secondary side of the transformer T is connected to the anode of the first forward rect...

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PUM

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Abstract

The invention discloses a synthetic diamond press heating power device, comprising a voltage-reduction transformer and a thyristor; the primary class of the transformer is directly connected with the network power; the secondary class of the transformation is connected with the input terminal of two groups of thyristor phase-shifting rectifier circuits; two groups of thyristor phase-shifting rectifier circuits are output in parallel reversely and connected with two electrodes of the synthetic diamond press, and provide heating power for graphite raw material. The synthetic diamond press heating power device effectively eliminates the harm of the single-phase load to the electricity grid, overcomes the defect that the current is distributed non-uniformly owing to the skin effect, and can solve the problem that the positive ions and negative ions are migrated and accumulated near the electrode in time.

Description

(1) Technical field [0001] The invention relates to a synthetic diamond press, in particular to a heating power supply device for a synthetic diamond press, and belongs to the technical field of power electronics. (2) Background technology [0002] Synthetic diamond press is a special equipment for diamond production. The main raw material is graphite, which is placed in a square cavity formed by the top of four top hammers. The high pressure oil pump drives the top hammer to generate high pressure to squeeze the graphite material. Large current, high temperature is generated by the electrothermal effect of graphite material body resistance. In the synthetic diamond press, only two electrodes are connected with the graphite material, so the heating power supply can only be powered by single-phase AC or DC. At present, the artificial diamond press heating power supply device has the following three forms: [0003] 1. Single-phase 50Hz, 220V or 380V power supply is provided ...

Claims

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Application Information

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IPC IPC(8): H02M7/155H02M5/10B01J3/06
CPCY02B70/1483Y02B70/10
Inventor 韦寿祺莫金海何少佳
Owner GUILIN UNIV OF ELECTRONIC TECH
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