Pressure Vessel Hose Coupling With Continuous Anti-Scaling Flow Path
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Solution Overview
Problem
Existing pressure vessels for high-temperature water suffer from calcium scaling due to contact between cold water and hot metal pipes, exacerbated by constrictions caused by metal pipes extending into hose parts, leading to precipitation and potential corrosion.
Innovation Solution
A pressure vessel design featuring a continuous, flanged hose system with clamping and bearing surfaces that form a seal without constrictions, using a metal pipe-shaped portion between the inner and outer hose parts, and an optional stainless steel plate lining to prevent water contact with metal parts, ensuring a watertight seal and reducing scaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal pipe extends through the passage into the hose part to provide structural support and connection, then the mechanical strength and connection reliability are improved, but calcium scaling and corrosion occur due to contact between cold water and hot metal
Solution Approach 1:
A plastic intermediate pipe is introduced between the metal feed-through pipe and the hose part. This intermediate pipe serves as a mediator that prevents direct contact between cold water and the hot metal pipe, thereby eliminating calcium scaling while maintaining the structural connection. The intermediate pipe is clamped between the hose part and the metal pipe, providing both isolation and mechanical coupling.
Solution Approach 2:
The hose part with its flexible plastic structure is extended to contact the metal pipe, creating a flexible barrier that prevents water from reaching the metal surface. The plastic material forms a continuous protective shell around the metal pipe connection point, eliminating harmful metal-water contact while maintaining system flexibility.
2Strength
If a metal pipe extends into the hose part to ensure structural integrity, then the mechanical strength is improved, but constrictions are caused in the passage leading to enhanced calcium precipitation
Solution Approach 1:
The plastic intermediate pipe acts as a mediator that eliminates the constriction problem. By providing a smooth plastic interior surface instead of metal, it prevents calcium precipitation while maintaining the necessary mechanical connection strength through external clamping.
Solution Approach 2:
The connection system becomes a composite structure combining metal (for structural strength), plastic intermediate pipe (for smooth flow and scaling prevention), and hose material (for flexibility). This multi-material approach resolves both the strength requirement and the scaling/constriction problem.
3Strength
If the hose part is clamped down tightly on the metal pipe to ensure secure connection, then the connection strength is improved, but the inner tube may come into contact with metal coupling parts causing corrosion
Solution Approach 1:
The plastic intermediate pipe serves as a permanent intermediary barrier between the water-carrying inner tube and any metal coupling parts. This eliminates the risk of corrosion while allowing tight clamping of the intermediate pipe itself to ensure connection strength.
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 effectively prevents calcium scaling and corrosion, maintains optimal water flow, and simplifies the connection process by eliminating metal contact, thus reducing the risk of contamination and metal part degradation.
Implementation Method 1
By extending the first and the second hose part towards each other, forming seal between them, a substantially continuous (plastic) pipe is provided
Implementation Method 2
said first and said second hose part being provided with flanged ends, which is clamped between the bearing surface and the clamping surface in the coupled condition of the two coupling parts
Data Source
AI summary
A vessel, preferably a pressure vessel, for containing water of a high temperature in an inner space thereof, which vessel comprises at least one passage. A first hose part, around which a first coupling part provided with a clamping surface extends, and a second coupling part formed around said passage, which is provided with a bearing surface, connect to the passage in the vessel. A second hose part extends from said passage into the inner space of the vessel. The first and the second coupling part are interconnected and the first and the second hose part are provided with flanged ends, which are clamped between the bearing surface and the clamping surface in the coupled condition of the two coupling parts, with the first and the second hose part forming a substantially continuous hose.