Segmented Overpressure Protection Device for Pressure Transmitters
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Solution Overview
Problem
Conventional overpressure control devices for pressure transmitters are complex to manufacture and assemble, and often suffer damage or destruction during overpressure events, requiring replacement.
Innovation Solution
A simple, easy-to-assemble overpressure control device with a cylindrical shape and external thread for screwing onto the pressure transmitter's internal thread, featuring identical half-cylinder parts that assemble head-to-tail to form internal baffles, slowing down fluid flow and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional overpressure control devices are used, then overpressure protection is provided, but the device complexity increases and assembly becomes difficult
Solution Approach 1:
The overpressure control device is divided into two identical separable half-cylinder parts that can be assembled together to form a complete protective device. This segmentation makes the device easier to manufacture, assemble, and replace while maintaining effective overpressure protection through the formed baffle structure.
2Reliability
If conventional overpressure control devices are used, then overpressure protection is provided, but manufacturing becomes difficult
Solution Approach 1:
Manufacturing two identical half-cylinder parts is simpler than manufacturing a complete complex protective device with integrated baffles. The segmented design allows for easier fabrication, quality control, and assembly while providing the same overpressure protection functionality.
3Reliability
If disc rupture solution is used, then overpressure protection is provided, but the control device is damaged or destroyed
Solution Approach 1:
The overpressure control device with its baffle structure absorbs and dissipates overpressure energy before it can reach and damage the sensor organ. This protective cushioning allows the device to withstand overpressure events without being destroyed, eliminating the need for replacement after such events.
4Reliability
If automatic inlet duct closing is used, then overpressure protection is provided, but the solution has too many parts
Solution Approach 1:
The inlet duct closing function and the overpressure protection function are merged into a single integrated device. The half-cylinder parts with internal baffles simultaneously block the inlet duct and protect against overpressure, eliminating the need for separate closing mechanisms and reducing the total number of parts.
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
The device has two identical parts (21a, 21b), each including form of a half-cylinder comprising internal protuberances (210a) and notches (211a). The parts are assembled together head-to-tail in such a way that one of the protuberances of one of the parts is fitted into one of the notches of the other part to form chicanes (220). An external thread cooperates with an internal thread produced in an inlet duct of a pressure transmitter, where the device is positioned inside the inlet duct of the pressure transmitter. An independent claim is also included for a pressure transmitter.