Eccentric Piston Steam Throttle Valve Design
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Solution Overview
Problem
Existing throttle valves for steam pipes are bulky and require large construction perpendicular to the pipeline, leading to maintenance issues and potential damage, and they often cause temperature rises that destroy sealing rings when used as shut-off elements.
Innovation Solution
A compact throttle valve design featuring an eccentrically arranged and rotatable piston within the throttle housing, activated by a carrier element, which allows precise regulation of the pipe cross-section through rotation, avoiding shut-off functionality and incorporating a sleeve with radial bores or a hand wheel for adjustment, and an insulation body for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional throttle valve is used to regulate steam flow, then the flow quantity can be controlled, but the construction size perpendicular to the pipeline becomes extremely large
Solution Approach 1:
The invention changes the throttling mechanism from a conventional perpendicular-to-pipeline arrangement to an axial arrangement within the pipeline. The piston moves axially within the throttle housing, and the throttling bore is oriented along the pipeline axis, effectively utilizing the longitudinal dimension of the pipeline rather than requiring additional perpendicular space.
Solution Approach 2:
The piston is nested within the throttle housing, which itself is integrated into the pipeline structure. The eccentric longitudinal bore of the piston is nested within the piston body, creating a compact nested arrangement that minimizes the overall construction size while maintaining full throttling functionality.
2Productivity
If a conventional throttle valve is used, then flow regulation is possible, but the device requires high maintenance and has complex construction
Solution Approach 1:
The throttle valve is segmented into distinct functional components: the throttle housing containing the piston, the piston with its eccentric bore, the carrier element with pin, and the outer sleeve. This segmentation allows each component to be optimized independently and facilitates easy assembly, disassembly, and maintenance.
Solution Approach 2:
The pin is designed to be swivelable in a recess of the throttle housing, allowing it to automatically find its correct position during operation. The outer sleeve can be rotated to activate the pin without requiring additional actuating mechanisms, enabling self-service operation that reduces maintenance requirements.
3Productivity
If a throttle valve is used as a shut-off element, then complete flow closure is achieved, but temperature rise destroys sealing rings
Solution Approach 1:
The invention extracts the shut-off function from the throttle valve design. By providing an always-open throttle bore with a minimum cross-section that cannot be completely closed, the design eliminates the harmful temperature rise associated with complete flow closure, while still achieving effective flow regulation through the eccentric piston movement.
4Ease of operation
If the pin is made accessible for activation, then operation is possible, but the pin can be damaged or destroyed on movement in steam hoses
Solution Approach 1:
The outer sleeve acts as an intermediary between the operator and the pin. The pin remains protected within the recess of the throttle housing, while the outer sleeve can be rotated to activate the pin through the recess. This intermediary structure allows operation while protecting the pin from damage during movement through steam hoses.
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 provides a compact, low-maintenance throttle valve that maintains a minimum flow quantity, prevents damage, and ensures precise regulation of steam flow without causing temperature rises, suitable for use as a creeping steam throttle, while being compact and protected from burns.
Implementation Method 1
a piston (7) arranged eccentrically inside the throttle housing (1) and rotatable about its longitudinal axis
Implementation Method 2
an additional friction ring can be arranged between throttle housing and sleeve to retain the position of the piston once set
Data Source
AI summary
A device for manually regulating the flow quantity of steam pipes, with a throttle housing having an inlet and an outlet. In order to create a particularly compact device with simple construction and low maintenance, which furthermore has a modular structure, the device has a piston arranged eccentrically inside the throttle housing and rotatable about its longitudinal axis, which piston can be activated by at least one carrier element from outside the throttle housing and is provided with an eccentric longitudinal bore, and wherein the pipe cross-section, after rotation through a specified angle, is reduced to a desired cross-section.