Removable Diffuser for Erosion-Resistant Pressure Reduction
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Solution Overview
Problem
Conventional fixed fluid pressure reduction devices are prone to erosion, especially in steam applications, leading to a short lifespan and increased maintenance costs due to the use of materials susceptible to erosion from 'wet steam'.
Innovation Solution
A fluid pressure reduction device comprising a body made of code-compliant materials and a diffuser made of erosion-resistant materials like Alloy 6 or 440C, which is removably coupled to the body, allowing for easy replacement and extending the device's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fixed fluid restriction devices are made of code-compliant materials to meet external pressure boundary standards, then the device complies with safety codes, but the device becomes highly susceptible to erosion from wet steam
Solution Approach 1:
The device is divided into two distinct components: a body made of code-compliant material and a diffuser made of erosion-resistant material. This segmentation allows each component to be optimized for its specific function - the body for code compliance and the diffuser for erosion resistance.
Solution Approach 2:
The device combines two different materials with complementary properties: code-compliant material for structural integrity and pressure boundary compliance, and erosion-resistant material (such as Alloy 6 or 440C) for the diffuser portion that contacts wet steam. This composite approach resolves the contradiction between code compliance and erosion resistance.
2Reliability
If fixed fluid restriction devices are made from the same material as adjacent piping to ensure code compliance, then external pressure boundary standards are met, but the device lifespan is significantly reduced due to erosion
Solution Approach 1:
By segmenting the device into a body and a removable diffuser, the patent enables the diffuser to be made from erosion-resistant material while the body maintains code-compliant material. The diffuser can be replaced independently when eroded, extending the overall device lifespan without compromising code compliance.
Solution Approach 2:
The patent applies different material qualities to different parts of the device: the body uses code-compliant material appropriate for pressure boundaries, while the diffuser uses erosion-resistant material specifically where it contacts wet steam. This local differentiation optimizes both code compliance and lifespan.
3Reliability
If conventional fixed fluid restriction devices use standard piping materials to meet code requirements, then external pressure boundary codes are satisfied, but maintenance costs increase due to frequent replacement
Solution Approach 1:
The removable diffuser design segments the erosion-prone component from the code-compliant body, allowing the diffuser to be replaced independently. This reduces maintenance costs by avoiding the need to replace the entire device or the expensive code-compliant body when the diffuser erodes.
Solution Approach 2:
The patent enables selective replacement of the eroded diffuser while retaining the code-compliant body. This discarding and recovering approach reduces waste and maintenance costs by preserving the valuable code-compliant components that do not erode.
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 significantly increases the durability and lifespan of the fluid pressure reduction device, reducing maintenance costs and preventing erosion, while maintaining compliance with external pressure boundary codes.
Implementation Method 1
The diffuser defines a plurality of flowpaths arranged for reducing a pressure of a fluid flowing through the fluid passageway
Data Source
AI summary
A fluid pressure reduction device is provided. The fluid pressure reduction device includes a body and a diffuser. The body defines an inlet, an outlet, and a fluid passageway extending between the inlet and the outlet. The body is made of a first material having a first hardness. A seating area is defined within the body. The diffuser is removably coupled to the seating area and disposed within the fluid passageway of the body. The diffuser defines at least one flowpath for reducing a pressure of a fluid flowing through the fluid passageway. The diffuser includes a second material having a second hardness greater than the first hardness of the first material.