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High-voltage non-inductive resistor and manufacturing method thereof

A technology of non-inductive resistors and manufacturing methods, applied in resistors, resistor manufacturing, resistor components and other directions, can solve the problems of poor resistance to short-term inrush current, complex structure, large volume, etc., and achieve excellent anti-oxidation performance, High mechanical strength, the effect of improving mechanical strength

Pending Publication Date: 2019-08-16
凌海科诚电气有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of traditional high-power high-voltage non-inductive resistors with complex structure, high cost, large volume, and poor short-time impact current resistance, and to provide a new high-voltage non-inductive resistor and its manufacturing method , simple structure, small size, low cost, excellent anti-electric power performance, can better meet the needs of users for high-power high-voltage non-inductive resistors

Method used

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  • High-voltage non-inductive resistor and manufacturing method thereof
  • High-voltage non-inductive resistor and manufacturing method thereof
  • High-voltage non-inductive resistor and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] As shown in the figure, the high-voltage non-inductive resistor includes a plurality of "S"-shaped resistors 1, and the resistors 1 are made of Ni20Cr80 and have a resistivity of 1.10×10 -6 The hollow nickel-chromium alloy tube 101 of Ω·m is bent. The outer diameter of the hollow nickel-chromium alloy tube 101 is 3.0mm and the inner diameter is 1.5mm. Argon-arc welding at the joint, stainless steel frames 3 are arranged on both sides of the resistance sheet 1, the connecting plate frame 7 is fixedly installed on the stainless steel frame 3, and the corresponding mounting holes 6 are set at the corresponding positions of the stainless steel connector 2 and the connecting plate frame 7, and the stainless steel The connector 2 is connected to the corresponding connecting plate frame 7 through the bolt 8 and the nut installed in the mounting hole 6, and the resistance sheet 1 is combined in series and in parallel to form at least two upper and lower adjacent ones according t...

Embodiment 2

[0039] The high-voltage non-inductive resistor, the "S"-shaped resistor sheet 1 is made of Ni20Cr80 with a resistivity of 1.14×10 -6 The hollow nickel-chromium alloy tube 101 of Ω·m is bent, and the other structures are the same as those described in Embodiment 1.

[0040] The manufacturing method of the above-mentioned high-voltage non-inductive resistor is shown in the figure, and the steps are as follows:

[0041] 1. Bend the hollow nickel-chromium alloy tube 101 to make an "S"-shaped resistor 1 according to the micro-induction requirements;

[0042] 2. The resistance sheet 1 after bending and forming is solid-solution treated at 1150°C as a whole, and after 10 minutes of heat preservation, it is water-cooled to dissolve the carbides in the nickel-chromium alloy and obtain single-phase austenite, and then at 950°C for 3 hours. aging treatment;

[0043] 3. After heat treatment, the upper and lower ends of both sides of the resistance sheet 1 are argon-arc welded with the sta...

Embodiment 3

[0046] The high-voltage non-inductive resistor, the "S"-shaped resistor sheet 1 is made of Ni20Cr80 with a resistivity of 1.12×10 -6 The hollow nickel-chromium alloy tube 101 of Ω·m is bent, and the other structures are the same as those described in Embodiment 1.

[0047] The manufacturing method of the above-mentioned high-voltage non-inductive resistor is shown in the figure, and the steps are as follows:

[0048] 1. Bend the hollow nickel-chromium alloy tube 101 into an "S"-shaped resistor 1 according to the micro-induction requirements;

[0049] 2. The resistance sheet 1 after bending and forming is solid-solution treated at 1060°C as a whole, and after 15 minutes of heat preservation, it is water-cooled to dissolve the carbides in the nickel-chromium alloy and obtain single-phase austenite, and then at 920°C for 3 hours. aging treatment;

[0050] 3. After heat treatment, the upper and lower ends of both sides of the resistance sheet 1 are argon-arc welded with the stai...

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Abstract

A high-voltage non-inductive resistor and a manufacturing method thereof are provided to solve the problem that the traditional high-power high-voltage non-inductive resistor has a complex structure,high cost, large volume and poor resistance to short-term impulse current. The high-voltage non-inductive resistor comprises a plurality of series-parallel S-shaped resistor sheets which are formed bybending Ni20Cr80 hollow nickel-chromium alloy tubes. The upper and lower ends of the two sides of the resistor sheets are coated with stainless steel connectors and are connected with the stainless steel connectors by argon arc welding. Stainless steel frames are arranged on the two sides of the resistor sheets, and the stainless steel connectors are connected with the corresponding stainless steel frames, so that the resistor sheets can be connected in series and parallel to form at least two resistor modules adjacent to one another in the up-down direction. The resistor modules are electrically connected by copper or aluminum bars arranged on the stainless steel frames. Insulation supports are arranged between the upper and lower adjacent resistor modules and on the bottom of the bottomresistor module. The high-voltage non-inductive resistor has the advantages of simple structure, small size, low cost and excellent electrodynamic resistance, and can better meet the needs of users for high-power high-voltage non-inductive resistors.

Description

technical field [0001] The invention relates to a novel high-voltage non-inductive resistor and a manufacturing method thereof. Background technique [0002] High-voltage non-inductive resistors are the most commonly used power devices in the field of power transmission and distribution. Filter resistors for UHV DC transmission projects, filter resistors for SVC, charging resistors for SVG, starting resistors for flexible DC transmission projects, neutral point grounding resistors, etc., providing a wide range of markets for high-voltage non-inductive resistors space. [0003] With the upgrading of the transmission and distribution network, the power of high-voltage non-inductive resistors continues to increase. Traditional high-power non-inductive resistors are divided into cast iron resistors, grid resistors, strip resistors, mesh resistors, etc. The resistance value of cast iron resistors is extremely difficult to control during the production process, the resistivity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C1/014H01C1/144H01C1/16H01C3/02H01C3/10H01C3/12H01C13/02H01C17/00H01C17/04H01C17/28
CPCH01C13/02H01C3/02H01C3/10H01C3/12H01C1/144H01C1/16H01C1/014H01C17/04H01C17/28H01C17/00
Inventor 李明张琪刘坤璐杨永辉李宝党张洪生孙雪桢陈廷辉孙岐袁昆
Owner 凌海科诚电气有限责任公司
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