HVDC Submodule Extraction Apparatus with Extension Bed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for maintaining and extracting high voltage direct current system submodules are hazardous and difficult due to the heavy weight of the equipment, which poses safety risks when using aerial ladders, as sudden load changes can alter the center of gravity, making it challenging to safely remove and transport these heavy modules from high-rise structures.
Innovation Solution
A module extraction apparatus with a movable base that slides on a fixed base, featuring roller channels and guide ribs, allows for the separation of power and capacitor units, and an extension bed is used to stabilize the submodule on an aerial ladder, preventing changes in the ladder's center of gravity and ensuring safe removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If aerial ladders are used to move submodules, then the submodules can be accessed for maintenance, but the center of gravity changes suddenly causing safety risks
Solution Approach 1:
The patent introduces an extension bed as an intermediary device between the aerial ladder and the submodule. The extension bed is held by the aerial ladder cage and provides a stable platform for workers to access and extract submodules, preventing direct handling that causes center of gravity shifts. This mediator absorbs the instability and provides a secure working platform.
2Weight of moving object
If aerial ladders with large load capacity are used, then heavy submodules can be supported, but the center of gravity still changes suddenly causing safety risks
Solution Approach 1:
The extension bed serves as a mediator that distributes the weight of the submodule across a larger area and provides a stable extraction platform. This prevents sudden load transfers to the aerial ladder that would cause center of gravity changes, even when handling heavy submodules.
3Productivity
If workers directly handle submodules on aerial ladders, then extraction is possible, but the work becomes very difficult and dangerous
Solution Approach 1:
The extension bed provides a stable, extended platform that allows workers to safely access and extract submodules without directly handling them from the aerial ladder. This intermediary structure reduces the physical difficulty and danger by providing a secure base of operations.
Solution Approach 2:
The extraction process is segmented into distinct phases: the extension bed is first deployed and stabilized, then the submodule is extracted onto the extension bed, and finally transported to the aerial ladder. This segmentation breaks down the dangerous operation into manageable, safer steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the safe and stable extraction of submodules from high voltage direct current systems by distributing the weight evenly and maintaining the stability of the aerial ladder, reducing the risk of accidents during maintenance and transportation.
Implementation Method 1
rollers moving along the roller channels may be disposed on outer surfaces of both opposite sides of roller skirts
Data Source
AI summary
The present invention relates to a module extraction apparatus of a high voltage direct current system. In the present invention, a fixed base (30) is secured to a structure (82), and a sub-module (10) is mounted on a movable base (60) that slides on the fixed base (30), thereby enabling the sub-module (10) to be extracted from the structure (82). The sub-module (10) may be separated into a power unit (12) and a capacitor unit (24) which may be separately extracted from the structure (82). A connection support (84) is connected to the fixed base (30) and installed to protrude toward the outside of the structure (82), and the tip end of the connection support (84) extending toward the outside of the structure (82) is supported by a wire (86). As described above, the present invention has an advantage of more easily extracting the module, which is a heavy object, from the structure (82) to carry out the maintenance thereof.