Modular Expansion Tank Fitting for Flexible Hydraulic Connections
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Solution Overview
Problem
The production of expansion tanks is hindered by the need for multiple variations in fittings based on the type of hydraulic system, leading to inefficient production and storage due to the requirement of different components for each system type.
Innovation Solution
A modular fitting system consisting of two distinct metal parts, where the first part is fixed to the expansion tank's half-shell via electric projection welding and the second part connects to the hydraulic system, allowing for flexible assembly and adaptation to different connection types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complete fitting is produced for each specific hydraulic system type, then the fitting is ready for immediate installation, but the number of different pieces to be produced increases and production efficiency decreases
Solution Approach 1:
The fitting is divided into two separate parts: a first part with a tubular portion for insertion into the expansion tank and a second part with various connection configurations for different hydraulic systems. This segmentation allows the common first part to be produced once and then combined with different second parts as needed, reducing the total number of unique pieces to produce while maintaining readiness for installation.
Solution Approach 2:
The first part of the fitting serves as a universal component that can be combined with multiple types of second parts to accommodate different hydraulic system requirements. This multi-functionality approach allows a single base component to support various connection types (threaded, flanged, welded), improving production efficiency without compromising ease of operation.
2Adaptability or versatility
If multiple variations of complete fittings are produced to meet different hydraulic system requirements, then all system types are covered, but storage space requirements increase
Solution Approach 1:
By segmenting the fitting into a common first part and variable second parts, the patent reduces the storage requirement from storing multiple complete fitting variations to storing one type of first part and a smaller inventory of second parts. This segmentation allows for more efficient space utilization while maintaining adaptability to different hydraulic system types.
Solution Approach 2:
The patent enables a just-in-time assembly approach where the second part is added only when needed for a specific hydraulic system type, rather than pre-assembling all possible variations. This reduces storage space by eliminating the need to maintain inventory of complete fittings for all system types, while still providing full adaptability when required.
3Device complexity
If the fitting is designed as a single integrated piece, then the structure is simple, but the ability to adapt to different connection types is limited
Solution Approach 1:
The fitting is segmented into two parts with standardized interfaces, maintaining relative structural simplicity while enabling adaptability. The first part maintains a simple tubular structure for insertion, while the second part provides the connection variability. This segmentation allows each part to remain structurally simple individually while the combination provides versatility.
Solution Approach 2:
The first part acts as an intermediary component between the expansion tank and the various hydraulic system connections. This mediator approach allows the simple tubular first part to interface with the tank, while the variable second part provides the adaptability for different connection types, effectively decoupling the simplicity requirement from the adaptability requirement.
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
Enables partial assembly of expansion tanks regardless of the final fitting type, allowing for minimal intervention and efficient production, reducing storage space and enabling production in small quantities.
Implementation Method 1
Both the annular projection of the first part and the annular projection of the second part of the new fitting for expansion tanks are suited to be joined by electric projection welding, respectively the first part to the metal half-shell of the expansion tank and the second part to the contact ring of the first part.
Data Source
AI summary
A pipe fitting for expansion tanks includes a first part suited to be fixed to an expansion tank during production of the expansion tank, and a second part suited to be fixed to the first part, if necessary, even at a later moment than the production of the expansion tank.