）下必須具備極高的耐低溫性能。對(duì)超低溫截止閥DN15進(jìn)行溫度場(chǎng)實(shí)驗(yàn)，采集235個(gè)超低溫截止閥的填料壓蓋溫度數(shù)據(jù)，經(jīng)處理后對(duì)溫度場(chǎng)進(jìn)行正態(tài)分布驗(yàn)證，結(jié)果顯示填料部分溫度場(chǎng)符合正態(tài)分布規(guī)律。將實(shí)驗(yàn)中可能影響溫度的因素進(jìn)行參數(shù)化,計(jì)算出在對(duì)流換熱系數(shù)、氮?dú)鈱痈叨群偷獨(dú)鈱訙囟鹊?個(gè)參數(shù)影響下填料壓蓋部位的溫度，并生成填料溫度的概率分布圖。關(guān)鍵詞：LNG用截止閥；超低溫實(shí)驗(yàn)；填料溫度；參數(shù)化分析；氮?dú)?龍?jiān)雌诳W(wǎng)" />

特黄三级爱爱视频|国产1区2区强奸|舌L子伦熟妇aV|日韩美腿激情一区|6月丁香综合久久|一级毛片免费试看|在线黄色电影免费|国产主播自拍一区|99精品热爱视频|亚洲黄色先锋一区

LNG用截止閥超低溫實(shí)驗(yàn)填料溫度影響因素分析

  • 打印
  • 收藏
收藏成功


打開文本圖片集

中圖分類號(hào)：TH134；TB115.1 文獻(xiàn)標(biāo)志碼：B

Analysis of factors influencing packing temperature in cryogenic test of shut-off valves for LNG

FAN Chengyu'，LIU Yang2，TENG Yuanyuan2， ZHANG Gaoyuan

（1. Shanghai Hudong Shipbuilding Valve Co.，Ltd.，Shanghai 201913，China； 2.Logistic Engineering College，Shanghai Maritime University，Shanghai 2O13O6，China）

Abstract： To ensure the safety and reliability of the liquefied natural gas（LNG） system，ultra-low temperature shut-off valves must have excellnt low-temperature resistance under extreme working conditions ）. A temperature field experiment is conducted on the ultra-low temperature shutoff valve DN15，collcting temperature data from the packing gland of 235 ultra-low temperature shut-off valves.After processng，the temperature field is verified for normal distribution.The results show that the temperature field of the packing part conforms to the normal distribution law. The factors that may affect the temperature in the experiment are parameterized，and the temperature at the packing gland part is calculated under the influence of three parameters：convective heat transfer coeffcient，nitrogen layer height，and nitrogen layer temperature. A probability distribution map of the packing temperature is also generated.

Key Words：LNG shut-off valve； ultra-low temperature experiment； packing temperature； parametricanalysis ； nitrogen

0引言

隨著我國(guó)石油化工、低溫工程和液化氣體等產(chǎn)業(yè)的迅速發(fā)展，閥門行業(yè)迎來(lái)更廣闊的市場(chǎng)空間，尤其是低溫環(huán)境下的閥門及相關(guān)技術(shù)，更是整個(gè)閥門行業(yè)研究的重點(diǎn)[1-3] O

本文研究的超低溫截止閥主要應(yīng)用于輸送液化天然氣（簡(jiǎn)稱LNG）。（剩余6509字）

monitor