一种凝汽器换热管振动实验装置及方法

By using an air excitation system and a data acquisition and analysis system, the vibration characteristics of condenser heat exchange tubes were measured under simulated steam excitation conditions. This solved the problem of difficulty in direct measurement under high temperature and high pressure conditions and enabled accurate vibration parameter testing.

CN116296175BActive Publication Date: 2026-07-17CHINA SHIPBUILDING IND CORP NO 703 INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA SHIPBUILDING IND CORP NO 703 INST
Filing Date
2023-02-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to directly measure the vibration characteristics of condenser heat exchange tubes under high temperature and high pressure environments, and thus cannot obtain true vibration parameters.

Method used

An air excitation system was used to simulate steam excitation. An experimental platform was built, and the vibration characteristics of the heat exchange tubes were measured using an eddy current sensor and a data acquisition and analysis system to establish the equivalent relationship between air excitation and steam excitation.

Benefits of technology

It enables accurate testing of the vibration characteristics of condenser heat exchange tubes under simulated actual steam conditions, and allows comparison of the effects of different factors on vibration to obtain more realistic vibration parameters.

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Abstract

本发明提出一种适用于凝汽器换热管振动实验装置及方法,搭建实验台架、空气激励系统和数据采集分析系统;所述的实验台架由工字导板、隔板、滑动支架、支架、导轨构成的基架,以及换热管、水箱构成,所述的空气激励系统空气流速是由风机、电机、通风管道产生的,其中风速是通过PLC来控制变频器,从而控制电机来实现的,所述数据采集分析系统对电涡流位移信号和空气流速参数值进行采集和分析处理,所述空气流速参数值包括风速值。本发明建立了空气激励和蒸汽激励间等效关系,在气流弹性振动的模拟实验中,用空气介质代替蒸汽,通过数据采集分析系统测定在模拟条件下凝汽器换热管的振动参数。
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