Connector Pulsation Reduction via Elastic Sealing and Spring Bias
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Solution Overview
Problem
Existing connectors in piping systems face challenges in reducing fluid pulsation due to aging deterioration of O-rings, which affects sliding resistance and sealing performance, making it difficult to tune the frequency of pulsation reduction effectively.
Innovation Solution
A connector design featuring an elastic sealing member sandwiched between the cylinder and piston end surfaces, with an urging body applying force to reduce pulsation, separating sealing and pulsation reduction functions, and using materials like coil springs, flat springs, or gas to maintain consistent performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the O ring is compressed to ensure sealing, then sealing performance is improved, but sliding resistance changes with aging making frequency tuning difficult
Solution Approach 1:
The patent segments the functions by providing a sealing member for sealing and a separate elastic member for pulsation reduction. The elastic member's properties can be independently tuned to achieve desired pulsation reduction at specific frequencies without being constrained by sealing requirements, thereby improving frequency tuning capability while maintaining sealing performance.
Solution Approach 2:
The patent allows for parameter changes in the elastic member (spring constant, pre-compression force) to tune the pulsation reduction frequency independently of the sealing member's compression state. This enables optimization of pulsation reduction performance at desired frequencies without compromising sealing effectiveness.
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
The solution effectively reduces fluid pulsation by adjusting the piston movement, maintains sealing performance, and allows easy tuning of pulsation frequency reduction, preventing degradation from aged deterioration and ensuring reliable operation.
Implementation Method 1
an elastic sealing member sandwiched in a compressed state between an end surface of the flange portion and an end surface of the piston
Implementation Method 2
an urging body disposed in the region on the side of the piston opposite to the passage in the cylinder and applying urging force to move the piston toward the passage and compress the elastic sealing member
Data Source
AI summary
Provided is a connector (1) which can facilitate tuning of frequency of pulsation to be reduced and prevent sealing performance from degrading when a piston (70) moves. A pulsation reducing member (50) adopts a structure in which the piston (70) moves in a cylinder (60). The cylinder (60) has an annular flange portion (62) projecting in a radially inner direction of a hollow cylindrical shape. An elastic sealing member (80) is sandwiched in a compressed state between an end surface of the flange portion (62) of the cylinder (60) and an end surface of the piston (70). An urging body (90) is disposed in a region in the cylinder (60) on a side of the piston (70) opposite to a passage (12) and applies urging force to move the piston (70) toward the passage (12) and compress the elastic sealing member (80).