Feedthrough Insulator With Screened Sensor For Field Sensing
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Solution Overview
Problem
Existing feedthrough insulators fail to sense the electric and magnetic fields generated by a live rod connection without being affected by surrounding electrical and magnetic fields from nearby conductors.
Innovation Solution
A feedthrough insulator design featuring a central rod, a coaxial sleeve with a dielectric carrying body, and a field sensor positioned within, along with a screen element to block unwanted field lines, ensuring insulation and accurate field sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is positioned within the sleeve to sense electric and magnetic fields from the live rod, then field sensing capability is improved, but the sensor becomes affected by surrounding electrical and magnetic fields from nearby conductors
Solution Approach 1:
A screen element is introduced as an intermediary component between the sensor and the external environment. This screen element selectively blocks harmful electric and magnetic field lines from surrounding conductors while allowing the sensor to detect fields from the live rod, thus mediating between the sensor and various field sources
Solution Approach 2:
The screen element is positioned at specific locations (openings in the sleeve) to create localized field blocking. The structure provides different properties in different regions: the screen blocks fields from certain directions while allowing field sensing from the live rod, creating spatially differentiated field interaction
2Reliability
If the sleeve length is increased to prevent harmful field lines from reaching the sensor, then insulation performance is improved, but device complexity and dimensions increase
Solution Approach 1:
The protective function is segmented between the sleeve and the screen element. Rather than relying solely on increased sleeve length, the solution divides the protection mechanism into two parts: the sleeve provides basic insulation and positioning, while the screen element provides targeted field blocking at critical openings
Solution Approach 2:
Instead of solving the field blocking problem by extending in one dimension (increasing sleeve length), the solution introduces a new dimensional approach by adding the screen element that blocks fields radially at the openings, effectively solving the problem in a different spatial dimension
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 precise measurement of voltage and current by isolating the sensor from external fields, maintaining dielectric strength and effective insulation.
Implementation Method 1
sensor (30) of electric field and/or of magnetic field positioned in proximity of the inner surface (22) of the shell (21) of the sleeve (20)
Implementation Method 2
sensor (30) of electric field and/or of magnetic field positioned in proximity of the inner surface (22) of the shell (21) of the sleeve (20)
Implementation Method 3
a carrying body (40) formed by dielectric material
Implementation Method 4
at least a screen element (161, 261, 361) which is able to screen the entry of the harmful-undesidered electrical field lines
Data Source
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AI summary
-A feedthrough insulator is characterized by the fact to comprises: >-a central rod (10) which extends longitudinally with respect its longitudinal axis (10y); >-a sleeve (20) positioned coaxial around said rod of connection (10) with the respective circular shell (21) radially spaced (D-21) with respect to the central rod (10); >-a sensor (30) of electric field and/or of magnetic field, positioned in proximity of the inner surface (22) of said shell (21) of the sieeve (20); and >-a carrying body (40) formed by dielectric material able to contain and to embed said central rod (10), said sieeve (20) and said sensor (30) of electrical field and/or of magnetic field.