Fixed Lever Pin Assembly for Fluid Regulator Stability

Solution Overview

Problem

Fluid regulators in high-pressure environments experience instability and inaccuracy due to lever flutter, leading to inconsistent flow and premature wear, as the lever and pin assembly can move independently, causing wasted motion and disrupting fluid flow control.

Innovation Solution

A fixed lever and pin assembly where the pin is integrated with the lever to prevent horizontal movement, ensuring they move as a single unit, reducing instability and maintaining precise control over fluid flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the lever and pin are designed as separate movable parts, then the device complexity is reduced and ease of manufacture is improved, but the stability and accuracy of fluid flow control deteriorate due to lever flutter and independent movement

Engineering Contradiction:

Improveease of manufactureVSAvoidstability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The lever and pin are merged into a single integrated component where the pin is fixed to the lever, forming a unified lever-pin assembly. This integration eliminates the independent movement between separate parts, preventing lever flutter and ensuring stable, accurate fluid flow control while maintaining manufacturing simplicity through the unified design.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of operation

If the lever and pin are designed as separate movable parts, then the ease of operation is improved, but the measurement precision and flow control accuracy deteriorate due to wasted motion and instability

Engineering Contradiction:

Improveease of operationVSAvoidflow control accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The lever and pin are merged into a single integrated component where the pin is fixed to the lever, forming a unified lever-pin assembly. This integration eliminates the independent movement between separate parts, preventing lever flutter and ensuring stable, accurate fluid flow control while maintaining manufacturing simplicity through the unified design.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If the lever and pin are designed as separate movable parts, then the device complexity is reduced, but the durability and longevity deteriorate due to premature wear from unstable movement

Engineering Contradiction:

Improvedevice complexityVSAvoidlongevity

Core Design Contradiction:

Device complexityVSDuration of action of stationary object

Solution Approach 1:

The lever and pin are merged into a single integrated component where the pin is fixed to the lever, forming a unified lever-pin assembly. This integration eliminates the independent movement between separate parts, preventing lever flutter and ensuring stable, accurate fluid flow control while maintaining manufacturing simplicity through the unified design.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10316987B2Fixed lever and pin assembly for stabilizing gas flow and pressure regulation of a fluid regulator

Publication Date: 2019.06.11 FISHER REGULATORS (SHANGHAI) CO LTD

AI summary

A fixed lever and pin assembly may include a lever body having a front end, a back end, and an arm connecting the front end and the back end. The front end of the lever body may be operatively coupled to a control element of a regulator. The arm may be adapted to operatively couple to an actuator of a regulator. A pin may be fixed to the front end of the lever body and may be disposed through the front end in a direction perpendicular to first and second parallel sides of the lever body. The fixed lever and pin assembly may be an integrated piece and the pin may prevent the lever body from moving independently from the pin.