Press Pressure-Release Valve Control for Precise Depressurization
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Solution Overview
Problem
Existing press apparatuses lack the ability to precisely control the rate of pressure reduction during the pressure reduction phase, necessitating improved control mechanisms for high-precision pressure management.
Innovation Solution
A press apparatus with a guiding passage featuring a flow restriction mechanism, comprising a movable flow restriction body controlled by an actuator and counterforce mechanism, allows for precise control of pressure reduction by balancing forces to maintain equilibrium, enabling fine-tuned pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a simple pressure reduction mechanism is used, then the device complexity is reduced, but the manufacturing precision of pressure control deteriorates
Solution Approach 1:
The flow restriction body utilizes the pressure differential force generated by the pressure medium itself to automatically regulate the opening size. The pressure medium's own pressure creates a force that opens the flow restriction, eliminating the need for external actuators or complex control systems while achieving precise pressure control through self-regulation.
Solution Approach 2:
The flow restriction body acts as an intermediary element between the pressure vessel and the pressure medium sink. It mediates the pressure reduction process by converting the pressure differential into a mechanical opening force, thereby controlling the flow rate and achieving precise pressure control without direct mechanical actuation.
2Manufacturing precision
If a flow restriction mechanism with multiple forces is used, then the manufacturing precision of pressure control is improved, but the device complexity increases
Solution Approach 1:
The system employs the pressure medium's own pressure to generate the opening force on the flow restriction body. This self-service approach uses the process parameter (pressure) to control the control element, achieving precise pressure reduction control without requiring external power sources or complex actuation mechanisms.
Solution Approach 2:
The flow restriction body dynamically adjusts its opening size in response to changing pressure conditions. As pressure decreases in the vessel, the opening force diminishes, allowing the flow restriction to automatically modulate and maintain precise control throughout the pressure reduction process.
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
Facilitates high-precision control of pressure reduction without the need for extensive corrective feedback, ensuring accurate pressure management throughout the process.
Implementation Method 1
a second force acting on the flow restriction body to urge it towards the maximally open position, generated by a pressure of pressure medium in the guiding passage
Implementation Method 2
a first force acting on the flow restriction body to urge it either towards the maximally open position or towards the closed position, controllably and selectively generated by an actuator
Implementation Method 3
a third force acting on the flow restriction body to urge it towards the closed position if the first force acts on the flow restriction body to urge it towards the maximally open position, or towards the maximally open position if the first force acts on the flow restriction body to urge it towards the closed position, which third force is generated by a counterforce mechanism
Data Source
AI summary
A method in a press apparatus is disclosed. The press apparatus comprises a pressure vessel and a guiding passage for guiding pressure medium out of the pressure vessel to reduce pressure in the pressure vessel. The guiding passage comprises a first flow restriction comprising a flow restriction body that is movable between at least a closed position and a maximally open position, wherein when the flow restriction body is moved out of the closed position an opening is created the size of which during controlled withdrawal of pressure medium from the pressure vessel is determined by: a first force acting on the flow restriction body to urge it either towards the maximally open position or towards the closed position, generated by an actuator, a second force acting on the flow restriction body to urge it towards the maximally open position, generated by a pressure of pressure medium in the guiding passage, and a third force acting on the flow restriction body to urge it towards the closed position if the first force acts on the flow restriction body to urge it towards the maximally open position, or towards the maximally open position if the first force acts on the flow restriction body to urge it towards the closed position, the third force being generated by a counterforce mechanism. The actuator is controlled in accordance with a predetermined relationship between the second force and the first force, for the particular third force, such that the pressure of pressure medium in the guiding passage is reduced over time in accordance with a pressure reduction sequence.