High temperature flange joint deflection angle monitoring device and design method thereof

Abstract

The invention relates to a high temperature flange joint deflection angle monitoring device and a design method thereof. The monitoring device comprises a first-level amplification mechanism and a second-level amplification mechanism. The two levels of amplification mechanisms are connected through utilization of a V-shaped rod. A crank of the first level amplification mechanism is set at one sideof the V-shaped rod and a rocker of the second-level amplification mechanism set at the other side. Four rod lengths of the two levels of amplification mechanisms are designed through utilization ofan MATLAB. 10 times of amplification is realized by the first-level amplification mechanism. 5 times of amplification is realized by the second-level amplification mechanism. Totally, the amplification times is improved to 50 times. According to the device and the method, through increase of measurement precision, deflection angles of flanges can be accurately tested; the device and the method areapplicable to high temperature flanges under various working conditions; real-time monitoring is carried out; rigid evaluation is provided; and production and construction are guaranteed to be carried out successfully.

Description

technical field [0001] The invention relates to the technical field of high-temperature flange deflection angle testing, in particular to a high-temperature flange joint deflection angle monitoring device based on a four-bar multi-stage amplification mechanism and a design method thereof. Background technique [0002] Flange connection is a commonly used connection method in petrochemical equipment. Because of its advantages of easy disassembly and installation, it is widely used in pressure vessels and pipelines in petrochemical, nuclear power, metallurgy, pharmaceutical and other industries. With the increasingly prominent contradiction between economic development and energy supply, and the rapid development of oil refining and chemical technology, high temperature and high pressure conditions are common in various refining and chemical equipment. Under high-temperature operating conditions, the flange may undergo deflection, warping, creep and other changes, resulting in...

AI Technical Summary

Problems solved by technology

In order to avoid leakage accidents of high-temperature flanges, it is necessary to measure and monitor the deflection of high-temperature flanges. The data directly measured by existing extensometer-based measuring devices is too small, and a reasonable amplification mechanism is required to amplify the displacement. , so as to improve the measurement accuracy, and more effectively measure and study the deflection angle of the high-temperature flange, in order to find a method to effectively control the leakage of the high-temperature flange

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