Electrical Penetration Piece Conduction Testing in High-Temperature Reactors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The electrical penetration piece in the primary circuit of a high-temperature gas-cooled reactor experiences poor signal transmission due to uneven expansion of conductors under temperature changes, leading to unreliable material level signal transmission in the absorption ball system.
Innovation Solution
An apparatus for testing the thermal-state conduction performance of the electrical penetration piece, comprising a testing mechanism with a base, test portion, penetration piece, square modification portion, supporting portion, and conducting connection portion, along with a tensioning mechanism including a winding portion, handle portion, limiting portion, and testing portion, to ensure proper connection and testing under high-temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical penetration piece uses conventional conductors in the primary circuit, then the structure is simple, but the signal transmission reliability deteriorates due to uneven thermal expansion causing poor contact
Solution Approach 1:
The patent applies parameter changes by selecting conductors with specific material properties (thermal expansion coefficient, electrical conductivity) that match the thermal environment of the primary circuit. The conductor materials are chosen to have thermal expansion characteristics that minimize uneven expansion under temperature changes, thereby maintaining reliable contact without complex structural modifications.
Solution Approach 2:
The patent directly addresses thermal expansion effects by designing the electrical penetration piece to accommodate thermal dimensional changes. The structure includes features that allow conductors to expand and contract thermally without losing contact, such as flexible connection methods and proper clearance design, preventing signal transmission failures caused by thermal stress.
2Reliability
If the conductor is made longer to span the penetration piece, then the electrical connection is improved, but the thermal expansion unevenness increases causing worse contact
Solution Approach 1:
The patent optimizes conductor length parameters to the minimum necessary for electrical connection, avoiding excessive length that would amplify thermal expansion effects. The conductor length is carefully selected to balance electrical connectivity with thermal stability, using just enough material to establish reliable contact without creating excessive thermal expansion disparities.
3Manufacturing precision
If the electrical penetration piece is mounted without tensioning, then the installation is simpler, but the conductor contact precision deteriorates
Solution Approach 1:
The patent incorporates preliminary tensioning actions during the mounting process to pre-establish proper conductor tension and contact pressure. This preliminary action ensures that the conductors are properly positioned and tensioned before the penetration piece is fully installed, achieving precise contact without requiring complex adjustment procedures later.
Solution Approach 2:
The patent introduces dynamic tensioning mechanisms that allow the conductors to be adjusted and tensioned during installation. This dynamic approach enables the mounting process to adapt to thermal expansion conditions, allowing the conductors to be properly tensioned to account for thermal dimensional changes while maintaining installation simplicity.
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
Facilitates efficient and convenient mounting of the electrical penetration piece by ensuring close contact between conductors and pins, reducing labor and improving signal transmission reliability in high-temperature environments.
Implementation Method 1
a heating unit arranged in the test cylinder
Implementation Method 2
an electrical penetration piece of a primary circuit... the conductor between the adapting flanges in a hot state is expanded unevenly
Implementation Method 3
the conductor between the adapting flanges in a hot state is expanded unevenly
Data Source
AI summary
Disclosed is an apparatus for testing the thermal-state conduction performance of an electrical penetration piece of a high-temperature gas-cooled reactor. The apparatus includes a testing mechanism. The testing mechanism includes a base, a test portion arranged on the base. According to the apparatus for testing the thermal-state conduction performance of the electrical penetration piece of the high-temperature gas-cooled reactor, a threaded rod is rotated to drive a winding column to rotate to tension an insulating rope, and the insulating rope is tensioned to drive a copper pipe to be contracted to be in close contact with pins, so that the connection of the pins of the electrical penetration piece is completed. Through the testing portion, the conduction performance of the electrical penetration piece of a primary circuit of an absorption ball system can be tested in the helium atmosphere at 160° C.