Flow Meter Case Guides for Pipe Mounting
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Solution Overview
Problem
Capacitive electromagnetic flow meters face challenges in assembly complexity due to the need for dedicated structures and parts, such as board holders and yokes, which complicate the mounting of measuring pipes to cases, and can result in misalignment and noise interference.
Innovation Solution
The electromagnetic flow meter design includes a measuring pipe that is press-fitted into a pipe hole on a printed board with guides formed on the case's inner walls, allowing for easy mounting without complex structures, and features pipe-side and board-side wiring patterns for connection, reducing noise and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated structures such as board holders and yokes are used to mount the measuring pipe, then the measuring pipe can be securely mounted, but the assembly structure becomes complex and requires additional parts
Solution Approach 1:
The case body is designed to integrate multiple functions: it serves as the housing structure, provides mounting support for the measuring pipe through integrated guides on its inner wall, and eliminates the need for separate board holders and yokes. This merging of functions reduces the number of parts and simplifies the assembly structure while maintaining secure mounting capability
Solution Approach 2:
The case body is designed as a multi-functional component that not only houses the electromagnetic flow meter components but also provides positioning and mounting functions through the guides formed on its inner wall. The guides are integrated into the case body structure, allowing it to perform both structural support and precise positioning functions simultaneously, eliminating the need for dedicated attachment parts
2Reliability
If dedicated structures such as board holders and yokes are used, then the measuring pipe can be mounted, but the number of parts increases and assembly becomes more difficult
Solution Approach 1:
The mounting function is merged into the case body structure itself through the integrated guides. Instead of requiring separate board holders and yokes to be assembled, the guides are formed directly on the inner wall of the case body, reducing the number of assembly steps and making the manufacturing process simpler while maintaining reliable mounting capability
Solution Approach 2:
The mounting function is extracted from separate dedicated parts (board holders and yokes) and integrated into the case body structure. By forming the guides directly on the case body, the patent eliminates the need for these separate attachment parts, simplifying both the manufacturing process and assembly operations
3Manufacturing precision
If the measuring pipe is mounted using complex structures, then positioning can be achieved, but misalignment may occur and noise interference increases
Solution Approach 1:
The guides formed on the inner wall of the case body serve as intermediary positioning elements between the measuring pipe and the case. These guides provide precise alignment and positioning during assembly, ensuring that the measuring pipe is correctly positioned without requiring complex mounting structures. The simple, integrated guide structure minimizes potential sources of misalignment and reduces noise interference that could arise from multiple connection points and interfaces
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 simplifies the assembly process, ensures accurate positioning of the measuring pipe, and reduces noise interference, enabling easier and more precise mounting of the measuring pipe within the case without dedicated attachment parts, thus improving the overall assembly efficiency and reducing the risk of misalignment.
Implementation Method 1
a measuring pipe 2 to be press-fitted in a pipe hole 5H
Implementation Method 2
a measuring pipe 2 to be press-fitted in a pipe hole 5H
Implementation Method 3
guides 81A and 81B formed on inner walls 8A of the case 8, and the side end portions 5I and 5J of the printed board 5 inserted through the opening 8B are fitted respectively to the guides 81A and 81B
Implementation Method 4
a capacitive (fluid non-contact) type that a pair of surface electrodes are disposed on an outer surface of a measuring pipe, and electromotive force generated by a flowing fluid is detected through a capacitance between the fluid and each of the surface electrodes
Implementation Method 5
excitation coils 91A and 91B generating a magnetic flux Φ in a magnetic-flux direction Y orthogonal to a lengthwise direction X of a measuring pipe 90
Data Source
AI summary
A pipe hole to which a measuring pipe is to be press-fitted is formed in a printed board, and a guide to be fitted to a side end portion of the printed board inserted through an opening is formed on or in an inner wall of a case.