進(jìn)口熱力管線球閥(德國奧萊斯OLES閥門)
【進(jìn)口熱力管線球閥】詳細(xì)說明:
順時板動手柄帶動閥桿驅(qū)動球體旋轉(zhuǎn),使介質(zhì)順利通過?;顒又Ъ艿淖饔檬侵苯映惺芄艿兰氨亟Y(jié)構(gòu)的重量,并允許管道在溫度作用下,沿管軸線自由伸縮?;顒又Ъ芸煞譃椋夯瑒又Ъ?、導(dǎo)向支架、滾動支架和懸吊支架等四種形式。球閥有全通徑和縮徑兩種結(jié)構(gòu)形式。用于輸送帖連、易結(jié)渣介質(zhì)管道上的球閥應(yīng)使用全通徑的,方便定期的刮蠟吹掃器的通過。用于輸送氣體或物理性能近似于水的介質(zhì)的管道上宜使用縮徑球閥,因其重量比全徑球閥輕30%左右,有利于減輕管道負(fù)荷,降低成本。球閥是一種轉(zhuǎn)角為90°的旋轉(zhuǎn)類閥門,密封性能優(yōu)良, (全徑球閥)流量系數(shù)大流阻系數(shù)小,結(jié)構(gòu)簡單,使用壽命長,便于維修。用于截斷或接通管路中的介質(zhì),選用不同的材質(zhì),可分別適用于水、蒸汽、油品、液化氣、天然氣、煤氣、xiao酸、醋酸、氧化性介質(zhì)、尿素等多種介質(zhì)。
The timing plate handle drives the valve stem to drive the ball to rotate, so that the medium can pass smoothly. The function of movable support is to directly bear the weight of pipeline and insulation structure, and allow the pipeline to expand freely along the pipeline axis under the action of temperature. The movable bracket can be divided into four forms: sliding bracket, guiding bracket, rolling bracket and suspension bracket. Ball valves have full diameter and shrinkage structure. Ball valves used for conveying pasted and slagging-prone medium pipes should be full-diameter to facilitate the passage of regular wax scrapers and blowers. Shrinkage ball valves should be used in pipelines for conveying gas or medium with similar physical properties to water, because their weight is about 30% lighter than full diameter ball valves, which is conducive to reducing pipeline load and cost. Ball valve is a kind of rotary valve with 90 degrees rotation angle. It has excellent sealing performance, large flow coefficient, small flow resistance coefficient, simple structure, long service life and easy maintenance. Medium used for truncating or connecting pipelines, with different materials, can be used for water, steam, oil, liquefied gas, natural gas, gas, nitric acid, acetic acid, oxidizing medium, urea and other media.
【進(jìn)口熱力管線球閥】優(yōu)點
防吹出的導(dǎo)向式閥桿。閥桿從閥體內(nèi)倒裝,并由密封環(huán)密封,即使發(fā)生火災(zāi),填料燒損,閥桿突起部位也可與閥體上的密封面緊密接觸,能用效的防止外漏及閥桿飛出,減少事故損失。
●防靜電設(shè)計:采用鉻鎳不銹鋼的彈簧和小球使球體,閥桿和閥體之間相互導(dǎo)電,從而把非金屬閥座與球體摩擦產(chǎn)生的靜電*釋放。
●浮動球閥有顯著的開關(guān)位置指示:閥體、球體和手柄一個裝配單元,手柄指向管線方向閥門為開啟,手柄垂直管線方向閥門為關(guān)閉;即使是蝸輪頭上也帶開/關(guān)指示 。
●鎖定裝置設(shè)計:為了防止開關(guān)的錯誤操作,采用扁頭閥桿在開關(guān)位置設(shè)置鎖定孔,確保閥門處于正確的位置。
●*的閥座結(jié)構(gòu):浮動式球閥采用雙斜面彈性密封閥座或V型槽彈性密封閥座結(jié)構(gòu)設(shè)計,保證密封面的可靠性,對于低壓、超低壓或真空工況用球閥,采用板簧加載的閥座密封結(jié)構(gòu),能確保球閥*可靠的密封。中、高溫球閥的閥座材料可選用對位聚苯或金屬材料。防火安全設(shè)計,在閥座支承面內(nèi)側(cè)加工一道防火密封唇,當(dāng)發(fā)生火災(zāi)閥燒損時,防火密封唇與球體間形成金屬對金屬的密封,閥門填料墊片均采用耐調(diào)溫石墨材料,保證閥門在火災(zāi)發(fā)生時無外漏。
【進(jìn)口熱力管線球閥】工作原理:
(1)逆時針轉(zhuǎn)動手輪閥桿帶動閥芯逐漸上移,密封面脫開,閥芯上的導(dǎo)流座逐漸移出閥座內(nèi)孔,形成窄縫間隙,介質(zhì)通過閥座上的對稱節(jié)流孔進(jìn)入閥座內(nèi)部,少量介質(zhì)可通過窄縫流出,逐漸降低系統(tǒng)壓力。
(2)繼續(xù)逆時針轉(zhuǎn)動手輪,閥芯向上運(yùn)動,導(dǎo)流座上的節(jié)流孔移出閥座內(nèi)腔,較多的介質(zhì)通過導(dǎo)流座和閥套節(jié)流后順利排出。
(3)繼續(xù)逆時針轉(zhuǎn)動手輪,閥芯向上移至全開位置,此時,介質(zhì)壓力大大降低,大量雜質(zhì)可直接從閥套節(jié)流孔處排出,并在倒置的密封座處形成渦流,不斷清潔密封面,防止雜質(zhì)粘附在密封面上。
②閥門關(guān)閉過程:
(4)順時針轉(zhuǎn)動閥門,閥桿帶動閥芯下移,此時排污已結(jié)束,系統(tǒng)壓力較低,閥套上的節(jié)流孔面積逐漸減小,導(dǎo)向套靠近閥座,并改變介質(zhì)流向,介質(zhì)經(jīng)節(jié)流后以一定速度通過閥芯和閥做密封面,逐漸加強(qiáng)對密封面的清潔力度。
(5)繼續(xù)轉(zhuǎn)動手輪,閥芯上的導(dǎo)流座進(jìn)入閥座內(nèi)孔,形成窄縫節(jié)流,由于排污接近結(jié)束,介質(zhì)中雜質(zhì)已經(jīng)較少,導(dǎo)向套和閥座間的窄縫阻止了殘存的微小雜質(zhì)流入密封面,介質(zhì)通過窄縫快速流出,*清掃密封面,保證密封副接觸時達(dá)到零泄漏。