干法静电除尘器泄爆阀是静电除尘器的安全保障设施。本文设计了泄爆阀测试试验装置,对泄爆阀的性能(包括静态加压性能、整定压力、回座压力、泄爆性能)进行了试验研究。结果表明,所研制泄爆阀3级弹簧弹性模量选用适合,其行程和压力关系与国外同类先进产品基本一致。泄爆阀整定压力约5kPa,回座压力约4.6kPa,达到设计要求;整定压力偏差、启闭压差符合要求。瓦斯爆炸模拟泄爆试验表明,泄爆阀在爆炸条件下能够发挥其泄爆性能并复位,动态压力-行程曲线与静态测试曲线一致。

Explosion relief hatch is a kind of safety protection facility to protect dry-typed electrostatic precipitator from explosions. A test apparatus was designed to study the performances of the relief hatch, including static pressure performance, set pressure, re-seating pressure, and explosion relief performance. The result shows that the elastic modulus selection of the three-level spring for the explosion relief hatch designed and made by authors is reasonable. The relation between its pressure and stroke change accords with the advanced foreign products that is possessed of similar functions. The set pressure of the relief valve is around 5kPa, and the re-seating pressure is around 4.6kPa, they all meet the design requirement; and the deviations of set pressure and opening/closing pressure meet the requirement as well. The explosion relief hatch as the cover of gas explosion chamber was fixed, and the methane explosion was triggered in the chamber. The process of the gas explosion relief was analyzed using a high speed video, and explosion pressure was acquired by a pressure transmitter. The experiment results show that the explosion relief hatch has the good performance and is able to automatically reset. The dynamic pressure-stroke curve fits with the static test curve perfectly.