Multi-Stage Fluid Regulator Erosion Mitigation
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Solution Overview
Problem
High pressure differentials across back-pressure regulators in high-pressure fluid systems lead to erosion and damage, resulting in reduced useful life, increased maintenance, and costs due to high fluid flow rates and undesired leakage.
Innovation Solution
Implementing a multi-stage fluid regulator design with a first and second fluid valve, each subjected to a portion of the total pressure differential, providing stepped pressure reduction and minimizing exposure to high fluid flow rates through predetermined inter-stage pressure reduction and fixed loading ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-stage back-pressure regulator is used to control high pressure fluid, then the pressure regulation function is achieved, but the valve components are subjected to high pressure differential causing erosion and damage
Solution Approach 1:
The pressure regulation process is divided into multiple stages with separate valve assemblies. The first valve assembly reduces pressure from a first level to a second level, while the second valve assembly reduces pressure from the second level to a third level. This segmentation distributes the total pressure differential across multiple components, reducing erosion and damage to individual valve parts.
2Reliability
If a single-stage regulator handles high pressure differential, then pressure control is achieved, but fluid flow rates become excessively high causing component damage
Solution Approach 1:
The fluid flow is divided into sequential stages through multiple valve assemblies. Each valve handles a portion of the total flow at a reduced pressure level, preventing excessively high flow rates from damaging a single valve component while maintaining overall system productivity.
3Ease of manufacture
If a single-stage regulator is used, then the device structure is simple, but maintenance costs and downtime increase due to component failure
Solution Approach 1:
While the multi-stage design increases structural complexity compared to a single-stage regulator, it reduces maintenance downtime by distributing wear across multiple components. When one valve requires maintenance, the other can continue operating, and the modular design allows for easier replacement of individual valve assemblies.
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 design significantly reduces damage to regulator components, decreases maintenance and costs, and extends the useful life of the regulators by minimizing erosion and fluid flow rates across the valves.
Implementation Method 1
the first fluid valve increases a flow of the pressurized fluid from the second inlet to the first outlet to decrease a pressure of the pressurized fluid when the pressure of the pressurized fluid at the inlet exceeds a pre-set pressure
Implementation Method 2
The second valve is fluidly coupled to the first inlet to cause the second valve to regulate a fluid pressure at the first outlet and the third inlet based on the pressure of the pressurized fluid at the first inlet
Data Source
Figure 1
Figure 2A
Figure 2B~3B
AI summary
Multi-stage fluid regulators are described. An example fluid regulator (200) includes a regulator body (202) having an inlet (204) in fluid communication with a source of pressurized fluid. A first fluid valve (208) is disposed within the regulator body and coupled to the inlet to regulate a pressure of the pressurized fluid at the inlet. A second fluid valve (246) is disposed within the regulator body and coupled to the inlet and, via a passageway (248), to the first fluid valve. The second fluid valve is to cause a fluid pressure in the passageway to be regulated to a predetermined portion of the pressure of the pressurized fluid at the inlet.