Liquid Discharge Pressure Control With Gas Leak Stabilization
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Solution Overview
Problem
Existing discharge devices experience significant pressure fluctuations when using pressure control valves, leading to variations in the discharge amount, especially when the discharge operations are short or performed at short intervals, due to the small load capacity relative to the flow rate of compressed gas.
Innovation Solution
A discharge device with a leak mechanism that vents part of the compressed gas under pressure control, reducing pressure fluctuations by maintaining a lower secondary side pressure and minimizing the load on the pressure control valve, including an orifice or flow control valve controlled by a device to manage flow rates and absorb changes in load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pressure control valve is used to control compressed gas pressure, then the discharge amount can be controlled, but significant pressure fluctuations occur leading to variation in discharge amount
Solution Approach 1:
A buffer tank is introduced as an intermediary component between the pressure control valve and the discharge system. The buffer tank absorbs pressure fluctuations by storing compressed gas at varying pressures and releasing it smoothly, thereby mediating the transmission of pressure variations to the discharge amount and improving consistency.
Solution Approach 2:
The system changes the pressure parameter dynamically by using a pressure control valve to adjust the compressed gas pressure supplied to the buffer tank. This parameter adjustment allows control over the discharge amount while the buffer tank mitigates the negative effects of pressure changes on discharge consistency.
2Stability of the object's composition
If the volume of the storage container is increased ten times or more to suppress pressure fluctuation, then pressure stability improves, but the device size and complexity increase significantly
Solution Approach 1:
The buffer tank serves as a mediator that provides pressure stabilization without requiring a proportional increase in storage container volume. By positioning the buffer tank strategically in the gas flow path and using it to absorb pressure variations, the system achieves pressure stability with minimal impact on overall device size.
Solution Approach 2:
The gas storage and pressure regulation function is segmented into separate components: a small storage container for holding compressed gas and a buffer tank for pressure stabilization. This segmentation allows the buffer tank to handle pressure fluctuations independently, preventing the need to enlarge the main storage container.
3Productivity
If the flow rate of compressed gas is increased to improve productivity, then discharge speed increases, but pressure fluctuations become more significant
Solution Approach 1:
The buffer tank acts as a mediator that decouples the relationship between compressed gas flow rate and discharge pressure stability. High flow rates can be supplied to the buffer tank without directly transmitting pressure fluctuations to the discharge system, allowing productivity improvement while maintaining pressure stability.
Solution Approach 2:
Different parts of the system have different flow rate characteristics: the buffer tank receives high flow rate compressed gas from the pressure control valve, while the discharge system receives smoothed flow with minimal fluctuations. This local differentiation of flow quality allows high productivity at the source while maintaining stability at the discharge point.
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 stabilizes the discharge process with reduced variation, ensuring consistent discharge amounts even during continuous operations by maintaining a lower secondary side pressure and minimizing pressure fluctuations.
Implementation Method 1
a leak mechanism that vents, to the outside, part of the compressed gas under the pressure adjusted by the pressure control valve
Implementation Method 2
The leak mechanism may include an orifice
Data Source
AI summary
A discharge device capable of suppressing pressure fluctuation of a compressed gas supplied to a container in which a liquid material is stored. The device includes a storage container in which a liquid material is stored; a discharge port through which the liquid material is discharged; a pressure control valve that adjusts a pressure of a compressed gas supplied from an external compressed gas source to a desired level; a discharge valve that establishes or cuts off communication between the pressure control valve and the storage container; a control device that controls operation of the discharge valve; a first flow line connecting the pressure control valve and the discharge valve; and a second flow line connecting the discharge valve and the storage container. The device further includes a third flow line branched from the first flow line, and a leak mechanism connected to the third flow line.