Power Cable Enclosure Thermal Bridge Heat Sink
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Solution Overview
Problem
The high internal temperatures within power transmission systems, particularly in wind power generators, hinder heat dissipation of power transmission cables, leading to reduced service life and safety concerns due to inefficient heat dissipation mechanisms in conventional technologies.
Innovation Solution
An electric power transmission carrier is designed with a thermal conductive bridge or direct surface contact between the power transmission cables and an enclosure, which acts as a heat sink, enhancing heat exchange efficiency by utilizing the enclosure's large thermal capacity and natural environment for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If power transmission cables are laid inside the tower without thermal conductive bridge, then the installation is simple, but the heat dissipation efficiency is poor and cable temperature becomes excessively high
Solution Approach 1:
A thermal conductive bridge is introduced as an intermediary component between the power transmission cable and the tower enclosure. This bridge serves as a heat transfer mediator, conducting heat from the cable to the tower's heat sink, thereby resolving the contradiction between simple installation and effective heat dissipation.
Solution Approach 2:
The heat dissipation function is extracted from the cable itself and transferred to the tower enclosure through the thermal conductive bridge. The tower enclosure, with its large thermal capacity and exposure to natural environment, serves as the primary heat sink, effectively removing heat from the cable system.
2Loss of energy
If thermal conductive bridge is added to improve heat dissipation, then heat dissipation efficiency improves, but the device complexity increases
Solution Approach 1:
The tower enclosure is designed to serve multiple functions: structural support for the wind turbine and simultaneously as a heat sink for cable thermal management. The thermal conductive bridge enables the enclosure to fulfill this dual role, improving heat dissipation without requiring a separate cooling system.
Solution Approach 2:
The thermal management system is merged with the existing tower structure. Instead of adding a separate complex cooling system, the invention combines the heat dissipation function with the tower enclosure, using the bridge to connect these elements and achieve efficient thermal management through existing structural components.
3Duration of action of stationary object
If cables are hung vertically without thermal contact, then the installation is straightforward, but the service life is reduced due to excessive heat
Solution Approach 1:
The thermal conductive bridge acts as an intermediary that enables thermal contact between the cable and tower while maintaining the cable's vertical hanging configuration. This mediator allows heat to be conducted away from the cable without requiring physical reconfiguration of the cable installation.
Solution Approach 2:
The tower enclosure, with its inherent large thermal capacity and exposure to natural convection and radiation, serves as a self-service heat sink. The system uses the tower's own thermal properties to cool the cables, eliminating the need for active cooling mechanisms and extending cable service life through passive thermal management.
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
This solution improves the heat dissipation efficiency of power transmission cables, increases the thermal balance capability of the enclosure, reduces temperature requirements for internal equipment, and enhances the structural stability and safety of the system, while also lowering design and manufacturing costs.
Implementation Method 1
a thermal conductive bridge is provided between the electric power transmission cable and the enclosure... to allow the electric power transmission cable to be in indirect surface contact with the enclosure
Implementation Method 2
the enclosure functions as a heat sink for the electric power transmission cable... to allow the electric power transmission cable to exchange heat with the enclosure more efficiently
Implementation Method 3
The resulting temperature of the tower is formed by a combined effect of solar radiation and ambient air temperature
Data Source
Figure 1-1~1-3
Figure 2-1~2-2
Figure 2-3
AI summary
An electric power transmission carrier and a manufacturing method of the electric power transmission carrier and an enclosure are provided. The electric power transmission carrier includes an enclosure and an electric power transmission cable mounted on the enclosure. The electric power transmission cable is in direct or indirect surface contact with an inner wall of the enclosure, and the enclosure functions as a heat sink of the electric power transmission cable. In the present application, the electric power transmission cable or the conductor is mounted on the enclosure such as a tower barrel or a high tower, to perform electric power transmission and take the enclosure as a heat sink. The electric power transmission component takes the enclosure, the "heat sink" having a huge thermal capacity, as a "cold source", such that the electric energy transmission, the transmission power of the cables and conductors can be effectively improved compared with those having the same cross sectional area in the conventional technology, and the heat dissipation effect can be improved, so as to improve the elasticity, reduce the crispiness, improve the stability and safety of the enclosure in the cold region in winter. The power transmission conductor does not cause imbalance damage to the thermal environment inside the enclosure any more, thus improving the thermal balance capability of the enclosure.