Ultrasonic Flowmeter Transducer Mounting for Clutter Isolation
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Solution Overview
Problem
Ultrasonic flowmeters have a poor filtering effect on clutter, leading to low measurement accuracy due to the transmission of noise and vibration from the body to the transducer.
Innovation Solution
The ultrasonic flowmeter incorporates a limiting device fixedly connected to the body, with the transducing assembly in clearance fit and a gasket assembly sleeved on the transducing assembly's second end, forming indirect contact and reducing clutter transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transducer is fixedly connected with the body, then the transducer is stable and securely mounted, but noise and clutter from the body are transmitted to the transducer, degrading measurement accuracy
Solution Approach 1:
The patent introduces a gasket assembly as an intermediary component between the transducer and the body. This gasket assembly includes multiple gaskets (first gasket, second gasket, third gasket) that are sequentially arranged and connected, creating a buffer zone that isolates the transducer from the body. The gaskets serve as mediators that allow mechanical connection while blocking the transmission of noise and clutter vibrations, thus resolving the contradiction between stable mounting and measurement accuracy.
Solution Approach 2:
The patent divides the connection path between the transducer and the body into multiple segmented sections using separate gasket components. Instead of a single direct connection, the connection is segmented through the first gasket, second gasket, and third gasket, each potentially made of different materials with varying damping properties. This segmentation allows for optimized noise isolation at each interface while maintaining overall structural stability.
2Measurement precision
If signal processing is used to filter clutter, then some noise reduction is achieved, but the filtering effect is poor and the transducer still receives significant clutter
Solution Approach 1:
The patent applies preliminary action by implementing physical noise isolation through the gasket assembly before the ultrasonic signal is even received by the transducer. This preventive measure blocks clutter and noise at the source transmission path, eliminating the need for complex post-reception signal processing. The gasket assembly pre-filters the mechanical vibrations, allowing the transducer to receive cleaner signals directly, thus improving measurement precision without increasing device complexity.
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 configuration effectively reduces the impact of clutter on the transducing assembly, enhancing the measurement accuracy of the ultrasonic flowmeter and simplifying the signal processing requirements.
Implementation Method 1
the gasket assembly is sleeved on the second end of the transducing assembly, and the limiting device is in contact with the transducing assembly by means of the gasket assembly... the strength of the clutter transmitted from the body to the transducing assembly is reduced through the gasket assembly
Data Source
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AI summary
The present application provides an ultrasonic flowmeter, including a body, a transducing assembly, a limiting device and a gasket assembly. An accommodating cavity is provided in the body, a side wall of the body is provided with a fixing hole in communication with the accommodating cavity, and the transducing assembly, the gasket assembly and the limiting device are located in the fixing hole; the transducing assembly is hermetically connected with an inner peripheral wall of the fixing hole, a first end of the transducing assembly faces the accommodating cavity, a second end of the transducing assembly faces the limiting device and is in clearance fit with the limiting device, the gasket assembly is sleeved on the second end of the transducing assembly, and the limiting device is in contact with the transducing assembly by means of the gasket assembly; the limiting device is fixedly connected with the inner peripheral wall of the fixing hole; the gasket assembly includes a gasket, and at least one surface of the gasket is provided with one or more protrusions. In the ultrasonic flowmeter of the embodiments of the present application, the provision of the gasket assembly reduces the effect of clutter from the body on the transducing assembly, thereby improving the measurement precision of the ultrasonic flowmeter.