Valve Displacement Regulating Mechanism for Precise Pressurized Flow
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Solution Overview
Problem
Existing mass flow controllers struggle to precisely control the flow rate of pressurized fluid, especially during instantaneous discharges, leading to potential over-discharge in applications like discharge devices.
Innovation Solution
A valve design featuring a bonnet and valve element with a displacement amount regulating mechanism, including an abutment member that adjusts the maximum opening degree by abutting on the valve element, allowing for precise regulation of the flow rate and peak pressure of pressurized fluid, and a lock mechanism to maintain stability and prevent excessive discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mass flow controller is used to control the flow rate of pressurized fluid, then the flow rate can be regulated, but it is not easy to perform precise control that minutely changes the flow rate particularly in an instantaneous discharge
Solution Approach 1:
The invention changes the physical parameter of the valve element by introducing an abutment member that mechanically limits the displacement amount of the valve main body portion. This parameter change enables precise control of the maximum opening degree, thereby achieving minute control of the flow rate in instantaneous discharge scenarios.
2Productivity
If the valve opening degree is increased to increase flow rate, then more fluid can be discharged, but the discharge may exceed the necessary amount leading to over-discharge
Solution Approach 1:
The abutment member is pre-positioned to define a maximum displacement limit of the valve element before operation begins. This preliminary action ensures that the valve opening degree cannot exceed a predetermined value, preventing over-discharge while still allowing sufficient flow rate for normal operation.
3Device complexity
If the valve structure is simplified to reduce complexity, then manufacturing and operation become easier, but the ability to precisely regulate flow rate and peak pressure is reduced
Solution Approach 1:
The valve structure is segmented into distinct functional components: the valve element for flow control, the abutment member for displacement limitation, and the bonnet for structural support. This segmentation allows each component to perform its specific function efficiently, achieving precise flow rate regulation without excessive overall complexity.
4Quantity of substance
If the maximum opening degree of the valve is increased to increase design flow rate, then higher flow capacity is achieved, but the flow rate becomes harder to control precisely at lower levels
Solution Approach 1:
The valve system incorporates dynamic control capability through the abutment member, which can be adjusted to different positions to change the maximum displacement limit of the valve element. This dynamic adjustment allows the system to adapt to different flow rate requirements while maintaining precise control at each setting level.
Data Source
AI summary
A valve is equipped with a displacement amount regulating mechanism (for example, flow rate control device). An abutment member of the displacement amount regulating mechanism protrudes inside a pilot chamber and faces an upper end surface of a valve main body portion of a valve element. When the valve element (the valve main body portion) is separated from a valve seat to bring the valve into an open state, the abutment member is brought into abutment on the upper end surface of the valve main body portion. This abutment regulates the displacement of the valve element.