Pressure Reducing Valve Flow Path for Faster Valve Closing
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Solution Overview
Problem
Pressure reducing valves face delays in valve closing operations due to rapid pressure increases on the inlet side, leading to potential outlet pressure exceeding set values, especially when large amounts of gas are supplied quickly.
Innovation Solution
The pressure reducing valve design includes a pressure chamber with horizontal and vertical holes, where the ratio of the vertical hole's flow channel area to the total area of horizontal holes exceeds 1.16, facilitating smoother gas flow and reducing pressure differences, ensuring timely valve closure and proper pressure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pressure reducing valve allows rapid gas supply from the inlet port, then the gas flow rate increases, but the pressure on the inlet side rises rapidly causing delay in valve closing operation
Solution Approach 1:
The pressure chamber is divided into multiple regions through horizontal holes that communicate with a vertical hole. This segmentation allows gas to be distributed and vented through multiple pathways, preventing rapid pressure accumulation in any single region and enabling timely valve closing even during rapid gas supply.
Solution Approach 2:
The horizontal and vertical holes act as intermediary channels between the pressure chamber and the outlet. These intermediary pathways provide a controlled route for gas to escape from the pressure chamber, mediating the pressure build-up process and preventing harmful pressure spikes that would delay valve closing.
2Quantity of substance
If the pressure chamber volume is large to accommodate rapid gas supply, then the gas storage capacity increases, but the pressure difference between inlet and outlet sides becomes larger causing valve closing delay
Solution Approach 1:
By segmenting the pressure chamber through horizontal holes that connect to a vertical outlet hole, the invention creates multiple gas escape pathways. This allows the pressure chamber to maintain sufficient volume for gas storage while enabling rapid pressure equalization through the segmented pathways, preventing excessive pressure differences that would delay valve closing.
Solution Approach 2:
The invention introduces a vertical dimension (vertical hole) in addition to the horizontal dimension (horizontal holes) to create a three-dimensional gas flow network. This multi-dimensional pathway system efficiently distributes and ventes gas from the pressure chamber, maintaining quick response time despite adequate gas storage capacity.
3Ease of operation
If the flow channel area of the vertical hole is increased relative to horizontal holes, then gas flows more smoothly to the outlet, but the manufacturing precision requirements increase
Solution Approach 1:
The invention specifies a quantitative parameter range (ratio of vertical hole area to total horizontal hole area exceeding 1.16) that balances gas flow performance with manufacturing feasibility. This parameter optimization ensures smooth gas flow through the vertical hole while maintaining reasonable manufacturing precision requirements that can be achieved with standard machining tolerances.
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
This configuration effectively curbs rapid pressure rises in the pressure chamber, allowing the valve to close promptly and maintain outlet pressure within set limits, ensuring proper gas pressure adjustment even during rapid gas supply.
Implementation Method 1
a gas flowing from the pressure chamber into the vertical hole via the horizontal holes more smoothly flows to the outlet side of the valve element in the gas flow channel
Implementation Method 2
the flow channel area of the vertical hole to a total area that is a total of flow channel areas of the horizontal holes exceeds 1.16
Data Source
AI summary
A pressure reducing valve includes: a body, a valve seat, and a valve element opening and closing the valve seat according to a difference between a pressure on the inlet side and a pressure on the outlet side. A pressure chamber, which is a space part between the valve element and the valve seat, is provided on the inlet side of the valve element. The valve element includes a plurality of horizontal holes each opening to the pressure chamber, and a vertical hole bringing the horizontal holes and the outlet side of the valve element into communication with each other. The horizontal holes and the vertical hole are provided in such a manner that a value of a ratio of a flow channel area of the vertical hole to a total area that is a total of flow channel areas of the horizontal holes exceeds 1.16.