A control valve with a measuring chamber
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Solution Overview
Problem
Existing control valves are bulky and unable to measure pressure (P2) between the amount control arrangement and the differential pressure maintaining arrangement, necessitating additional components that compromise compactness.
Innovation Solution
A control valve design featuring a second valve body that rotates between positions to establish fluid communication between channels and a measuring chamber, allowing pressure measurement at different stream-wise locations, utilizing a rotatable measuring plug and elastomeric seals for compact construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an additional PT-plug with a third channel is provided to measure pressure P2, then pressure measurement capability is improved, but the valve construction becomes bulky
Solution Approach 1:
The single measuring chamber is designed to serve multiple measurement locations by receiving fluid communication from different channels through rotation, allowing one chamber to replace what would traditionally require multiple separate chambers or PT-plugs
Solution Approach 2:
The measuring chamber is made dynamically configurable through the rotatable second valve body, which changes the fluid communication paths between channels and the measuring chamber based on rotational position, enabling adaptive measurement at different locations
2Adaptability or versatility
If multiple channels and measuring chambers are provided for comprehensive pressure measurement, then measurement versatility is improved, but device complexity increases
Solution Approach 1:
One measuring chamber performs the function of multiple measuring chambers by being selectively connected to different channels through rotation, reducing the total number of components needed
Solution Approach 2:
Multiple measurement functions are merged into a single measuring chamber that can be connected to different channels through the rotatable valve body, consolidating what would otherwise require separate measurement systems
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
Enables compact and versatile pressure measurement across different stream-wise locations within the valve, facilitating efficient fluid flow control and optimization.
Implementation Method 1
the sealed chamber is sealed by an elastomeric element penetrate-able by a cannula and resealing upon retraction of such cannula
Implementation Method 2
The provision of the second valve body to be rotatable around an axis may provide for the first position and the second position being two different angular positions of the second valve body within a single axial position of the second valve body
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A control valve comprises a valve housing (1) with an inlet (2), an outlet (3), and a fluid path (4) is extending therebetween. An adjustable first valve body (5) is provided for adjusting a first flow opening (6) of the fluid path (4). A first channel (7) is debouching into the fluid path (4) at a first location (8) on a stream-wise first side of the first flow opening (6) and a second channel (9) is debouching into the fluid path (4) at a second location (10) on a stream-wise opposite side of the first flow opening (6). A measuring chamber (11) is also provided. A second valve body (12) is movable between two positions and provides in one position fluid communication between the first channel (7) and the measuring chamber (11), and provides in a second position fluid communication between the second channel (9) and the measuring chamber (11).