Preparation method of silver-containing copper bar for large-capacity phase regulator

A condenser and large-capacity technology, which is applied in the direction of metal/alloy conductors, can solve problems such as unstable vibration, tripping of the condenser, and large deviations in conductivity, and achieve narrow resistivity deviation ranges, reduce noise and vibration, The effect of excellent mechanical properties

Active Publication Date: 2018-03-06
重庆鸽牌电线电缆有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The new large-capacity air-cooled camera has a large size and weight, its working speed exceeds the second-order critical speed, and its mode shape is complex. It can absorb reactive power and generate active power. The working conditions are changeable, and its transient response and transient overload capabilities are strong. (up to 3.5 times), the internal temperature field is complex and changeable, prone to vibration instability and vibration exceeding the standard, resulting in tripping of the condenser, threatening the safety of the UHV power grid in extreme cases
The conductivity (resistance value) of the rotor winding of the condenser is basically the same, which is beneficial to reduce noise and vibration. The rotor winding of the new large-capacity air-cooled condenser is made of silver-containing copper bars, which requires that its conductivity (resistivity) is basically the same. , the existing silver-containing copper bar products have good electrical conductivity, mechanical properties and creep resistance, but the electrical conductivity has a large deviation, which cannot meet the needs of the new large-capacity air-cooled camera rotor winding.

Method used

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  • Preparation method of silver-containing copper bar for large-capacity phase regulator
  • Preparation method of silver-containing copper bar for large-capacity phase regulator
  • Preparation method of silver-containing copper bar for large-capacity phase regulator

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like figure 1 As shown, the preparation method of silver-containing copper bars for large-capacity condensers is as follows:

[0028] Step 1, material preparation: take silver, iron and electrolytic copper plate respectively; Copper, silver, and iron all contain impurities, so the sum of the gravity percentages of the material components will not be as high as 100%, and the rest are impurities.

[0029] Step 2: Upward continuous casting, using SL-13-10 / φ12.5~φ20 type upward continuous casting unit for production. The process parameters are as follows: lead rod specification φ20mm, cooling water inlet pressure 0.26MPa, cooling water inlet temperature 22°C, temperature difference between inlet and outlet water 7°C, lead rod pitch 5mm, lead rod speed 500mm / min, lead rod temperature 1160°C . Continuously add high-purity electrolytic copper plate, silver and iron during the lead-in process to keep the alloy composition and liquid level unchanged.

[0030] Test the silver...

Embodiment 2

[0034] The difference between this embodiment and embodiment 1 is:

[0035] The preparation method of the silver-containing copper bar for large-capacity condensers is as follows:

[0036] Step 1, material preparation: take silver, iron and electrolytic copper plate respectively; Copper, silver, and iron all contain impurities, so the sum of the gravity percentages of the material components will not be as high as 100%, and the rest are impurities.

[0037] Step 2: Upward continuous casting, using SL-13-10 / φ12.5~φ20 type upward continuous casting unit for production. The process parameters are as follows: lead rod specification φ20mm, cooling water inlet pressure 0.30MPa, cooling water inlet temperature 30°C, temperature difference between inlet and outlet water 9°C, lead rod pitch 7mm, lead rod speed 700mm / min, lead rod temperature 1160°C . Continuously add high-purity electrolytic copper plate, silver and iron during the lead-in process to keep the alloy composition and l...

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Abstract

The invention relates to the field of nonferrous metal processing, in particular to a preparation method of a silver-containing copper bar for a large-capacity phase regulator. The preparation methodcomprises the following steps: material preparation; step 2, up-drawing continuous casting; step 3, continuous extrusion; step 4, finished product drawing. The scheme has the beneficial effects that the resistivity of the silver-containing copper bar product is controlled within 0.01765-0.01898 omega.m/m<2>, the conductivity deviation is small, and the use demands of a rotor coil of the large-capacity air-cooled phase regulator are met.

Description

technical field [0001] The invention relates to the field of nonferrous metal processing, in particular to a method for preparing silver-containing copper bars for large-capacity condensers. technical background [0002] With the implementation of the UHVDC project, the hazards of power frequency overvoltage control at the sending end, chain reaction at the receiving end grid, and commutation failure are gradually increasing. Dynamic reactive power compensation equipment such as SVC and STATCOM, which are affected by voltage The output demand (to prevent commutation failure) and the fast large-capacity reactive power demand under transient state (to assist in the rapid recovery of DC) are insufficient in response, while the new large-capacity condenser (up to 300Mvar) has insufficient phase advance capability, sub-transient output characteristics and The strong incentive ability can just meet the above needs. [0003] The new large-capacity air-cooled camera has a large siz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/00B22D11/00C22C9/00H01B1/02
Inventor 陈涛庞小明
Owner 重庆鸽牌电线电缆有限公司
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