Distribution Valve Stroke Limiter for Repeatable Flow Metering
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Solution Overview
Problem
Existing distribution valves with flow-through metering devices for warm water plants require operator precision and awareness for accurate control of flow volume, making reproducible and successive setting of the valve position challenging.
Innovation Solution
Integration of a preset device, such as a stroke limiter, which limits the axial shifting of the valve body, ensuring reproducible setting of the flow-through volume by coordinating the closure part and guiding attachment elements, including a security element like a blocking member or security ring to lock the valve in the desired position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual setting of valve position is used, then operator flexibility is maintained, but setting precision and reproducibility deteriorate due to operator error
Solution Approach 1:
The stroke limiter is pre-adjusted to the desired flow volume setting before operation. This preliminary action sets a fixed stop position that automatically limits the valve body stroke, eliminating the need for operators to manually achieve precise settings during operation. The pre-set mechanical stop ensures reproducible flow volume settings while maintaining simple manual operation.
2Adaptability or versatility
If repeated opening and closing of the valve is performed, then operational flexibility is improved, but setting consistency deteriorates without a limiting mechanism
Solution Approach 1:
The stroke limiter mechanism serves itself by automatically limiting the valve body stroke to a pre-determined position. Each time the valve is opened, the stroke limiter's stop element automatically engages with the valve body or closure member to prevent over-opening, ensuring consistent flow volume settings without requiring operator intervention or memory of previous settings.
3Reliability
If a stroke limiting mechanism is added, then setting reproducibility is improved, but device complexity increases
Solution Approach 1:
The stroke limiter is designed as a nested structure where the stop element is integrated within or alongside existing valve components. The adjustment mechanism for the stroke limiter utilizes the same threaded connection elements and structural space already present in the valve body, allowing the limiting function to be added without proportionally increasing overall device complexity.
4Ease of manufacture
If manual adjustment precision is relied upon, then device simplicity is maintained, but control accuracy deteriorates
Solution Approach 1:
The stroke limiter acts as an intermediary mechanical element between the operator's manual operation and the valve's flow control function. By introducing this intermediate stopping mechanism, the system translates simple manual opening actions into precise, reproducible flow volume settings, achieving accurate flow control without requiring complex adjustment mechanisms or high operator skill.
Data Source
AI summary
The invention relates to a distribution valve with integrated flow metering unit, in particular for warm water heating systems, for use in a pipe, wherein a closable valve seat in the distribution valve and an axially movable sealing part thereto are provided, wherein one section of the sealing part is held and guided in an attachment element which is arranged externally against an opening in the pipe and said section of the sealing part has a handle wherein a stroke limiter limiting the axial displacement of the sealing part is allocated to the sealing part and slash all to the controlling attachment element.