A maintenance device for interlayer insulators of flexible straight valve towers

A technology for interlayer insulation and maintenance devices, which is applied to switchgear, electrical components, etc., can solve problems such as large lateral or side loads, valve tower damage, etc., and achieve high safety, effective maintenance, and low cost effects

Active Publication Date: 2021-05-11
CHANGZHOU BORI ELECTRIC POWER AUTOMATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problem that the insulator maintenance device in the prior art cannot well solve the problem of ensuring the stability of the valve tower when replacing the interlayer insulator, avoiding damage to other structures of the valve tower, and at the same time avoiding other interlayer insulators. The technical problem of insulators bearing large lateral or lateral loads, the present invention provides a device and method for overhauling interlayer insulators of flexible straight valve towers to solve the above problems

Method used

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  • A maintenance device for interlayer insulators of flexible straight valve towers
  • A maintenance device for interlayer insulators of flexible straight valve towers
  • A maintenance device for interlayer insulators of flexible straight valve towers

Examples

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Embodiment 1

[0046] Example 1, such as figure 1 As shown, a flexible straight valve tower interlayer insulator inspection device is used for a valve tower structure with three layers of valve towers, and each layer has three modules 5 arranged in series, and each module 5 is placed in a On the insulating beam 4, the longitudinal sides of the insulating beam 4 are respectively connected with a valve section frame 3 by bolts, and the bolts are installed along the horizontal direction. When the valve section frame 3 moves up and down, the insulating beam 4 and the valve section frame 3 can produce a certain relative rotation , to prevent the insulating beam 4 from twisting, and the upper and lower valve section frames 3 are connected by interlayer insulators 7, such as figure 2 , image 3 As shown, the insulator replacement unit in this embodiment includes two sets of telescopic assemblies 1, and the plane of the two sets of telescopic assemblies 1 is parallel to the plane of the valve sect...

Embodiment 2

[0052] Embodiment 2, when the fixed assembly 2 is installed, first rotate the adjusting screw 203 to shorten the fixed assembly 2 until the fixed assembly 2 can be placed between the upper and lower valve section frames 3, and the upper and lower ends of the fixed assembly 2 and the upper and lower valve section frames 3 After fixing, rotate the adjusting screw 203 to make the upper and lower valve section frames 3 tense, and the upper and lower valve section frames 3 are slightly stressed, so it is necessary to use a large force to rotate the adjusting screw 203. In order to facilitate the operation with tools, such as Image 6 As shown, the adjusting screw 203 in this embodiment includes an intermediate fastening section 2032 and a threaded section 2031 connecting the two ends of the intermediate fastening section 2032. The two threaded sections 2031 are threadedly connected with the upper pull rod 201 and the lower pull rod 202 respectively, and the middle fastening The sect...

Embodiment 3

[0053] Embodiment 3, embodiment 1 or embodiment 2, the jack 103 can be directly between the upper block 101 and the lower block 102, but if the jack 103 is placed tilted or subjected to external force, the jack 103 will be very slow in the process of jacking up. Rollover is prone to occur, causing the valve section frame 3 to tilt instantly and the interlayer insulator 7 to be damaged. Therefore, in this embodiment, circular grooves 105 are provided on the connecting end faces of the lower block 102, the upper block 101 and the jack 103, A pin hole is provided in the circular groove 105, such as Figure 7 As shown, the two ends of the jack 103 are sunken in the circular groove 105 during installation, and the end of the jack 103 is usually sunken inward, and the pin 106 is inserted into the hole of the pin 106 and abuts against the end face of the jack 103, so as to limit the relative Lateral displacement of the upper block 101 or the lower block 102 .

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Abstract

The invention discloses an interlayer insulator maintenance device and method for a flexible straight valve tower, which includes an insulator replacement unit and at least two sets of telescopic assemblies, where the plane of each set of telescopic assemblies is parallel to the plane of the frame of each layer of valve sections. The telescopic assembly is fixed on the upper and lower valve section frames on the side of the interlayer insulator to be overhauled, and can adjust the distance between the upper and lower valve section frames on the side of the interlayer insulator to be overhauled; the valve section fixing unit includes at least two A set of fixing components, the plane of each set of fixing components is parallel to the plane of each layer of valve section frame, and the fixing components are fixed on the upper and lower valve section frames on the opposite side of the interlayer insulator to be overhauled. The invention adopts the valve section fixing unit to fix the upper and lower valve section frames on the opposite side of the interlayer insulator to be overhauled, which can prevent other interlayer insulators from bearing large lateral loads when replacing insulators, avoid deformation or fracture, and realize interlayer insulators. Safe and efficient maintenance.

Description

technical field [0001] The invention relates to the technical field of flexible direct current transmission, in particular to a maintenance device for interlayer insulators of flexible straight valve towers. Background technique [0002] Flexible DC transmission is a new generation of DC transmission technology. Because of its advantages of power supply to passive network, independent adjustment of active and reactive power, no need for communication between converter stations, and easy construction of multi-terminal DC systems, it has become popular in China in recent years. The external application is more and more extensive. Among them, the high stability and high reliability converter valve is the core equipment of this technology. [0003] At present, most of the high-voltage and large-capacity flexible DC converter valves adopt a tower structure, and the valve layers are composed of multiple sets of valve sections. It is generally fixed around the upper and lower val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B3/00
CPCH02B3/00
Inventor 闫继豪黄莹瑛刘亮周传昆张云鹏
Owner CHANGZHOU BORI ELECTRIC POWER AUTOMATION EQUIP
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