Cup-Sealed Feed-Through Structure for Localized Liquid Insulation
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Solution Overview
Problem
Existing technologies do not provide a specific configuration for achieving insulation between the end surface plate of a pressure-resistant housing and a power feed pipe using a small amount of insulating liquid.
Innovation Solution
A feed-through structure is provided, comprising an end surface plate of a pressure-resistant housing, a power feed pipe that penetrates the end surface plate, a cup attached to the end surface plate to cover the power feed pipe, and an insulating liquid filled in the internal space of the cup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If insulating liquid is filled only in a portion where high dielectric strength is required, then usage amount of insulating liquid is reduced, but specific configuration for achieving insulation is not disclosed
Solution Approach 1:
The pressure-resistant housing internal space is segmented into an insulating liquid-filled space and a non-filled space. The insulating liquid is confined to a specific region (e.g., around the optical signal amplifier) rather than filling the entire housing, achieving both reduction in liquid quantity and provision of a concrete configuration.
Solution Approach 2:
High dielectric strength is provided locally only where required (around the optical signal amplifier and power feed pipe penetration area) rather than uniformly throughout the entire housing. This localized approach reduces the total amount of insulating liquid needed while maintaining necessary insulation performance.
2Reliability
If insulating liquid is used for insulation between end surface plate and power feed pipe, then insulation is achieved, but a large amount of insulating liquid is required without specific configuration
Solution Approach 1:
The space around the power feed pipe penetration is segmented as a specific insulating liquid-filled region. By confining the liquid to this localized area rather than filling the entire housing, reliable insulation is achieved with minimal liquid quantity.
Solution Approach 2:
The insulating liquid acts as an intermediary substance placed specifically at the interface between the end surface plate and power feed pipe where insulation is most critical. This targeted placement maximizes insulation effectiveness while minimizing liquid usage.
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 configuration achieves insulation between the end surface plate and the power feed pipe using a small amount of insulating liquid, effectively addressing the lack of specific configurations in existing technologies.
Implementation Method 1
an insulating liquid filled in an internal space of the cup
Data Source
AI summary
A feed-through structure includes: an end surface plate of a pressure-resistant housing; a power feed pipe configured to penetrate the end surface plate; a cup configured to be attached to the end surface plate and cover the power feed pipe; and an insulating liquid filled in the internal space of the cup. The feed-through structure is applied to, for example, an optical submarine repeater. The insulating liquid is typically an insulating oil or a fluorine-based inert liquid. The end surface plate is typically composed of beryllium copper.