Piezo-electric Transceiver Pre-assembly for Vibration Sensor
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Solution Overview
Problem
Existing Piezo-electric transceivers for vibration sensors have limitations in high-temperature applications and require complex assembly processes, especially in coated sensors and tubular versions, where tempering is expensive and difficult due to temperature constraints and mechanical challenges.
Innovation Solution
A Piezo-electric transceiver is designed as a separately handled unit with a drive seat and a mechanical connection section, allowing pre-assembly, biasing, and tempering before integration, featuring a stacked Piezo-drive with adjustment ceramics and metallic pressure pieces sintered into a monoblock, enabling efficient force transfer and reduced assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stacked Piezo-drive is clamped against the diaphragm via a clamping bolt and clamping nut, then the Piezo-electric transceiver can be securely fastened to transfer vibrations, but the assembly and tempering process becomes complex and expensive, especially for coated sensors and tubular versions
Solution Approach 1:
The patent integrates the clamping bolt, clamping nut, and Piezo-electric transceiver into a single pre-assembled unit. This merging of components eliminates the need for separate assembly steps in the sensor, reducing assembly complexity while maintaining secure fastening and effective vibration transfer.
Solution Approach 2:
The Piezo-electric transceiver is pre-assembled and pre-tempered as a separate unit before integration into the sensor. This preliminary action allows the complex tempering process to be performed once on the transceiver itself, avoiding the need for additional tempering steps after sensor assembly, thereby reducing overall process complexity and cost.
2Reliability
If the Piezo-electric transceiver is assembled and tempered after sensor coating, then the coating integrity is maintained, but the tempering process becomes difficult and expensive due to mechanical challenges
Solution Approach 1:
The Piezo-electric transceiver is tempered in advance as a separate unit before being integrated into the coated sensor. This preliminary tempering action avoids the need to perform tempering after coating, eliminating mechanical challenges associated with accessing and tempering the transceiver within the constrained sensor geometry, thereby easing the manufacturing process.
Solution Approach 2:
The system is divided into separate components: the Piezo-electric transceiver is manufactured and tempered as an independent unit, while the sensor housing with coating is prepared separately. This segmentation allows each component to be processed optimally without interfering with the other, maintaining coating integrity while simplifying the tempering process.
3Ease of manufacture
If a separately handled Piezo-electric transceiver unit is used, then assembly is simplified and tempering can be performed below Curie-temperature, but additional connection components are required
Solution Approach 1:
The connection components (clamping bolt, clamping nut, and mechanical connection elements) are integrated into the Piezo-electric transceiver unit itself during its pre-assembly phase. This merging reduces the number of separate connection components needed, as the transceiver becomes a self-contained module that interfaces with the sensor through a simplified mechanical connection.
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 solution enables universal application of Piezo-electric transceivers across various temperatures and simplifies assembly by allowing pre-assembly and tempering below the Curie-temperature, ensuring reliable operation without additional tempering steps, thus reducing costs and improving operational efficiency.
Implementation Method 1
By applying an electric voltage to the Piezo-elements they change their extension in the axial direction of the bolt and this way cause the diaphragm to vibrate
Implementation Method 2
The adjustment ceramics serve for the adjustment of a thermal expansion coefficient between the Piezo-elements and the pressure pieces
Implementation Method 3
a Piezo-unit with at least one Piezo-element as well as an adjustment ceramic arranged respectively in the stack above and below the Piezo-unit, with a preferably metallic pressure piece arranged in the stack above and below the adjustment ceramic, which are sintered into a monoblock
Data Source
AI summary
A Piezo-electric transceiver for a vibration sensor, with the Piezo-electric transceiver being embodied as a separately handled unit with a drive seat comprising a mechanical connection section for connecting the Piezo-electric transceiver to a mechanical oscillation unit of the vibration sensor.