A method for replacing a thyristor of a converter valve
A replacement method and thyristor technology, applied in the direction of manufacturing tools, hand-held tools, etc., can solve the problems of damaged thyristor devices, damaged insulation pullers, low replacement efficiency of screw ejectors, etc., to ensure consistency, small occupied space, and maintenance. Efficient effect
Active Publication Date: 2018-12-18
CHANGZHOU BORI ELECTRIC POWER AUTOMATION EQUIP
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Problems solved by technology
Its biggest disadvantage is that all the weight of the silicon stack is borne by the insulating pull ring after the pressure is completely relieved, which is easy to cause damage to the insulating pull ring, and the asynchronous rotation of the threaded ejector rod may easily cause damage to the thyristor device when the radiator is deflected and pressurized, and the screw ejector rod Replacement efficiency is low
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[0020] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.
[0021] Such as figure 1 , 2 As shown, a method for replacing a thyristor of a converter valve includes the following steps:
[0022] Step S1, install the support column 3: install the support column 3 on the mounting holes of the heat sink 2 on both sides of the thyristor assembly 5 through a quick ratchet wrench, the support column 3 is used to locate the position of the thyristor assembly 5, that is, through the support column 3 Locate the position of the thyristor assembly 5 to ensure that the thyristor assembly 5 maintains the same position before and after replacement; the radiator 2 is designed with a special installation positioning hole for the installation of the support column 3, and the support column 3 can be reused to ensure the insta...
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The invention discloses a converter valve thyristor replacing method. The converter valve thyristor replacing method comprises the following steps that firstly, supporting columns are arranged, wherein the supporting columns are arranged in installation holes of radiators on the two sides of a thyristor assembly, the supporting columns are used for positioning the position of the thyristor assembly, that is, the position of the thyristor assembly is positioned through the supporting columns, and it is guaranteed that the thyristor assembly keeps the same position before and after the thyristor assembly is replaced; secondly, thyristor assembly pressure discharging is carried out, wherein synchronous opening tools are symmetrically arranged on the two sides of the thyristor assembly, the radiators on the two sides of the thyristor assembly are pressurized to a set value a through the synchronous opening tools, then, a hydraulic tool is used for pressurizing a silicon stack to a set value b so that locking nuts which are used for keeping pressure of the thyristor assembly can be loosened, finally, the pressure is reduced to the set value a again, and the pressure borne by the thyristor assembly is transferred to the synchronous opening tools. According to the converter valve thyristor replacing method, the radiators on the two sides of the thyristor can be synchronously pressurized, and the replacing efficiency is high.
Description
technical field [0001] The invention relates to a method for replacing a thyristor of a converter valve. Background technique [0002] In the power system, the thyristor in the converter valve is the core equipment of DC power transmission and transformation. With the development of power electronic thyristor technology, the press-fit pressure of thyristors is increasing, and the requirements for disassembly tools are also getting higher and higher. [0003] At present, there is a thyristor replacement method, which is to place the threaded ejector rod between the two radiators after completely depressurizing the thyristor silicon stack assembly of the converter valve, and turn the threaded ejector rod to push away the radiators at both ends of the thyristor to be replaced, and then place the The thyristor is removed. Its biggest disadvantage is that all the weight of the silicon stack is borne by the insulating pull ring after the pressure is completely relieved, which is...
Claims
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IPC IPC(8): B25B27/00
CPCB25B27/00
Inventor 刘亮陆凯雷刘贵顾杰杨悦
Owner CHANGZHOU BORI ELECTRIC POWER AUTOMATION EQUIP