! B- k! L1 [2 {/ z! }5 A! P: ]在這里是閥座的意思,,那么metal to metal seated 呢? : L. o% G7 w" j# q3 e3 ~2 C5 ^還有Back seating stems/ }$ w* e, q% D7 x: R7 A! X9 U7 K# g
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[ 本帖最后由 卓信 于 2007-12-7 10:35 編輯 ]作者: 卓信 時間: 2007-12-7 10:38
metal to metal seated 就是金屬件固定的意思 + F% ?# s) ^. x! j. X: _& j6 \1 e% z, w 7 H4 C' I4 F6 _$ O) u' hBack seating stems 這個要結(jié)合你實際的閥體了,,表面意思應(yīng)該是 背面固定的支架作者: 望海的日子 時間: 2007-12-7 10:43
我從石油大典上沒有查出來metal to metal seated . E, i+ W/ T* S' e: _7 |1 [
但是查處 # c$ i1 z7 q6 n% e- P7 Jmetal to metal seal ' J. \ h, Y- v! s* p; e3 z金屬—金屬密封圈; Q! N' c4 H7 D; _
金屬對金屬密封 0 v. W2 {; ^1 P0 {6 o$ x" \. n所以懷疑寫錯了作者: 伊凡 時間: 2007-12-12 17:42
斷章取意, 見笑:- d6 A) g6 l) l( R
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metal to metal是鋼對鋼的意思,即接觸面均為金屬,而沒有其他潤滑材料做襯墊.作者: 伊凡 時間: 2007-12-12 17:50
上密封座設(shè)計 8 B( {+ J( h7 J/ f ! f- p3 K! r. @我公司提供的所有截止閥都有倒密封設(shè)計,。通常情況下,碳鋼截止閥的閥座設(shè)計采用分離式倒密封結(jié)構(gòu) ,不銹鋼截止閥的倒密封是直接加工或者是焊后加工,。當閥門在全開位置時,,倒密封的密封面非常可靠,。雖然按照標準 API 600中有倒密封,,但這不作為在帶壓情況下更換填料的依據(jù)。 5 K) g5 n6 w0 _& W+ |
. f/ M, [) s! g* ?$ m8 }/ bBack Seating Design% f6 E, r' w+ W; G
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All ur globe valves have the back seating design.ln most Cases,the carbon steel globe valve is fitted with a renewable back seat,For stainless steel globe valve,the back seat is machined directly in the bonnet or is machined after welding.When the globe valve is at fully open position,the sealing of the back seat can be very reliable.However,as per the requirement of API600,it is not a dvisable to add or change packing by the mean of back seating when the valve is pressure containing.作者: 伊凡 時間: 2007-12-12 17:53 標題: Stem = 閥桿 ·閥桿設(shè)計 & x& x9 z" q* L1 a, \" z) d" c2 u3 l B% v9 b/ r
采用整體鍛造工藝制成,,按照標準要求確定最小直徑,。 , K/ ~5 C) M- s, j: G; k& k; I+ @$ [/ n3 o
Stem Design 7 |) @* {; V$ @7 M, }. N' J/ s
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The stem is of integral forged design,The minimum diameter of the stem shall per the standard requirement.