Conductor Bushing Sealing with Silicone and Plastic Housing
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Solution Overview
Problem
Existing conductor bushings for high-frequency applications in harsh environments, such as those used in the chemical industry for measuring explosive materials, are costly and complex due to the need for materials like glass or ceramics, which require specialized manufacturing and can lead to discontinuities affecting signal transmission.
Innovation Solution
A conductor bushing with a sealing device comprising a first separating device and a casting device, arranged to create a hollow interior with a low leakage rate, allowing for a vacuum seal and maintaining zone separation while enabling efficient electrical signal transmission with minimal attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass or ceramic bushings are used for sealing conductor connections, then zone separation and sealing reliability are improved, but manufacturing cost and device complexity increase significantly
Solution Approach 1:
The patent replaces expensive glass or ceramic bushings with a cost-effective plastic housing and silicone sealing element assembly. The silicone element serves as a reusable sealing component that can be manufactured economically, eliminating the need for costly glass/ceramic materials while maintaining sealing functionality for conductor connections between zones.
Solution Approach 2:
The invention uses a composite sealing system combining a plastic housing with a silicone sealing element. This composite approach leverages the advantages of both materials: the plastic provides structural integrity and ease of manufacturing, while the silicone provides flexible sealing capability, together achieving reliable zone separation without the complexity of glass or ceramic solutions.
2Reliability
If glass or ceramic bushings are used for sealing conductor connections, then zone separation and sealing reliability are improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive glass or ceramic bushings with a cost-effective plastic housing and silicone sealing element assembly. The silicone element serves as a reusable sealing component that can be manufactured economically, eliminating the need for costly glass/ceramic materials while maintaining sealing functionality for conductor connections between zones.
3Reliability
If traditional sealing solutions are used, then zone separation is maintained, but signal transmission attenuation increases due to material discontinuities
Solution Approach 1:
The patent applies different material properties to different parts of the sealing system: the plastic housing provides structural containment while the silicone sealing element provides the actual seal. This local differentiation allows optimization of each component's properties for its specific function, maintaining zone separation while minimizing signal attenuation through proper material selection and positioning.
Solution Approach 2:
The silicone sealing element acts as an intermediary between the plastic housing and the conductor connections. It provides the sealing function while its flexible, homogeneous material properties help maintain signal transmission by reducing discontinuities compared to rigid glass or ceramic solutions.
Data Source
Figure 1~2
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Figure 5~11
AI summary
The leadthrough (100) has a sealing device with a grouting device (117) and a separating unit (114) e.g. disk. The grouting device is arranged in a section of a hollow inner region (124) of an outer conductor (101) e.g. housing coupler, such that the grouting device lies at the unit. The sealing device is arranged along the hollow region so that the sealing device provides a leakage rate whose value is below a predetermined value of a leakage rate, where an electrical signal with a predetermined frequency is transmitted along a longitudinal axis by of the conductor from the leadthrough. Independent claims are also included for the following: (1) a housing device comprising a housing separating device (2) a method for manufacturing a conductor leadthrough.