【摘要】：介紹了某型號(hào)超臨界汽輪機(jī)紅套環(huán)高壓內(nèi)缸強(qiáng)度有限元分析方法,對(duì)紅套環(huán)高壓內(nèi)缸額定負(fù)荷穩(wěn)態(tài)工況以及冷態(tài)啟動(dòng)、溫態(tài)啟動(dòng)、熱態(tài)啟動(dòng)和極熱態(tài)啟動(dòng)等瞬態(tài)工況進(jìn)行了強(qiáng)度計(jì)算與分析,得出了紅套環(huán)高壓內(nèi)缸額定負(fù)荷穩(wěn)態(tài)工況和瞬態(tài)工況下的溫度場(chǎng)分布和最大應(yīng)力比,并提出了該汽輪機(jī)的優(yōu)化運(yùn)行措施.結(jié)果表明:紅套環(huán)高壓內(nèi)缸開裂部位瞬態(tài)工況下的應(yīng)力過大是產(chǎn)生裂紋的主要原因之一;推薦的優(yōu)化運(yùn)行措施包括該汽輪機(jī)應(yīng)多帶基本負(fù)荷,減少機(jī)組啟停次數(shù),降低啟動(dòng)過程中負(fù)荷在29%~56%內(nèi)主蒸汽的升溫率,特別應(yīng)降低負(fù)荷在53%~56%內(nèi)主蒸汽的升溫率.
[Abstract]:This paper introduces the finite element analysis method of high pressure inner cylinder strength of red sleeve ring high pressure inner cylinder of a certain type of Supercritical steam turbine. The strength calculation and analysis are carried out under the rated load steady state and transient conditions such as cold start, warm start, hot start and extreme hot start. The temperature field distribution and maximum stress ratio under rated load steady and transient conditions of red ring high pressure inner cylinder are obtained. The optimal operation measures of the steam turbine are put forward. The results show that the excessive stress at the cracking position of the high pressure inner cylinder of the red ring is one of the main causes of the crack, and the recommended optimal operation measures include that the turbine should carry more basic load, reduce the number of start-up and shutdown of the unit, reduce the heating rate of the main steam within 29% 鈮，

本文編號(hào)：2518661