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H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65, H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,對夾雙瓣旋啟式止回閥

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型號: H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1
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公司基本資料信息
詳細說明

H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1.0-DN250,H46-1.0-DN300,H46-1.0-DN350,H46-1.0-DN400,H46-1.0-DN450,H46-1.0-DN500,H46-1.0-DN600,

H46-1.6-DN50,H46-1.6-DN65,H46-1.6-DN80,H46-1.6-DN100,H46-1.6-DN125,H46-1.6-DN150,H46-1.6-DN200,H46-1.6-DN250,H46-1.6-DN300,H46-1.6-DN350,

H46-1.6-DN400,H46-1.6-DN450,H46-1.6-DN500,H46-1.6-DN600,H46-2.5-DN50,H46-2.5-DN65,H46-2.5-DN80,H46-2.5-DN100,H46-2.5-DN125,H46-2.5-DN150,

H46-2.5-DN200,H46-2.5-DN250,H46-2.5-DN300,H46-2.5-DN350,H46-2.5-DN400,H46-2.5-DN450,H46-2.5-DN500,H46-2.5-DN600,H46-4.0-DN50,H46-4.0-DN65,

H46-4.0-DN80,H46-4.0-DN100,H46-4.0-DN125,H46-4.0-DN150,H46-4.0-DN200,H46-4.0-DN250,H46-4.0-DN300,H46-4.0-DN350,H46-4.0-DN400,H46-6.4-DN50,

H46-6.4-DN65,H46-6.4-DN80,H46-6.4-DN100,H46-6.4-DN125,H46-6.4-DN150,H46-6.4-DN200,H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65,

H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,對夾雙瓣旋啟式止回閥

針對國內傳統使用的H44型法蘭連接旋啟式止回閥具有體積笨大,流體阻力大,閥門關閉時水錘壓力高,安裝、維修難,使用壽命短等缺點。閥門供應網針對傳統法蘭結構止回閥存在的問題,研制生產了對夾式止回閥系列,H76對夾雙瓣旋啟式止回閥具有結構長度短,體積小、重量輕,閥瓣關閉快速,水錘壓力小,安裝方便,流體阻力小,動作靈敏、密封性能好,閥瓣行程短、關閥沖擊力小,整體結構、簡單緊湊,使用壽命長、可靠性高等特點。

雙瓣旋啟對夾式止回閥由閥體、閥瓣、閥桿及彈簧等零件組成,采用對夾式連接,結構緊湊。由于閥瓣的關閉行程短,并有彈簧加載,關閉速度快,可顯著減少水錘現象。產品具有體積小、重量輕、動作靈敏、密封可靠、安裝方便等特點,可水平安裝或垂直安裝,可適用于水、蒸氣、油品、硝酸、醋酸、強氧化性介質等多種介質。

H46對夾雙瓣旋啟式止回閥應用范圍
雙瓣旋啟對夾式止回閥適用于公稱壓力PN10~PN420、Class150~Class2500;公稱通徑DN15~DN1200、NPS1/2~48;工作溫度-196℃~540℃的各種管路上,用于防止介質倒流。通過選用不同的材質,對夾式止回閥可適用于石化、冶金、電力、輕工、食品等行業中水、蒸汽、油品、硝酸、醋酸、強氧化性介質及尿素等多種介質。 

H46對夾雙瓣旋啟式止回閥結構特點
1. 結構長度短,其結構長度只有傳統法蘭止回閥的1/4~1/8; 
2. 體積小、重量輕,其重量只有傳統法蘭止回閥的1/4~1/20;
3. 閥瓣關閉快速,水錘壓力??;
4. 水平管道或垂直管道均可使用,安裝方便;
5. 流道通暢、流體阻力小;
6. 動作靈敏、密封性能好;
7. 閥瓣行程短、關閥沖擊力??;
8. 整體結構、簡單緊湊、造型美觀;
9. 使用壽命長、可靠性高。

H46對夾雙瓣旋啟式止回閥標準規范:
設計制造標準:JB/T 8937 
結構長度標準:GB/T 12221-2005
連接法蘭標準:GB/T 9113
壓力溫度等級:GB/T 12224-2005
試驗檢驗標準:GB/T 13927-2008

結構形式H76型對夾雙瓣旋啟式止回閥H44型法蘭單瓣旋啟式止回閥
水錘壓力水錘壓力小,閥瓣行程短、并有彈簧輔助關閉、關閥速度快水錘壓力很大,閥瓣行程長,需要較長的關閉時間
H76型的水錘壓力只有H44型的1/2~1/5
尺寸和重量結構長度很短、體積小、重量輕,便于閥門的安裝、搬運、存放及管道的布置,并能大量節約材料、降低成本結構長度很長,體積笨大,重量很重
H76型的結構長度只有H44型的1/4~1/6,H76型的重量只有H44型的1/4~1/10
流體阻力流體阻力小,流體阻力系數ζ為2.6~0.7,隨著閥門口徑的增大,流體阻力系數減小流體阻力小,流體阻力系數ζ為1.3~3,但在低壓工況下,閥瓣不能完全開啟,流體阻力大。流體阻力隨著閥門口徑的增大而增大
安裝可水平安裝或垂直安裝,重量輕,不必為閥門設置支座可水平安裝或垂直安裝,大口徑閥門重量重,需設置支座
開啟壓力開啟壓力很小,閥瓣在很小的壓差下就能完全打開開啟壓力較大,閥瓣在較大的壓差下才能完全打開
可靠性閥門為整體結構,簡單緊湊、閥門關閉時沖擊力小,水錘壓力小,閥門壽命長,可靠性高閥門關閉時的巨大沖擊力及水錘壓力容易損壞閥門

H46對夾雙瓣旋啟式止回閥技術參數:

公稱通徑閥門全開啟
時的流體阻
力系數ξ
常溫下閥門全開啟時的水流量系數流體的流向
DNNPSKv(m3/h)Cv(U.S)Cv(U.K)
開啟壓力近似值KPa
5022.663746221
6521/22.410912810721
8032.317220116921
10042.028933828321
12551.847655746621
15061.575087873521
20081.314321675140321
250101.223302726228321
300121.036764301360221
350140.952746171516921
400160.873068548716031
450180.8924610818906131
500200.811415133561118731
600240.717573205601722231
700280.723919279852344141
750300.727458321262690941
800320.731241365523061641
900360.739539462613874841
1000400.748814571124783841
1050420.753817629665274141
1200480.770292822426888641

H46對夾雙瓣旋啟式止回閥主要連接尺寸

公稱通徑PN1.0PN1.6PN2.5PN4.0PN6.4PN10.0
LDLDLDLDLDLD
DN50601096010960109601096011560122
DN65671296712967129671296714067147
DN80731447314473144731447615073157
DN100731647316473170731707917779183
DN12586194861948619786197105213105220
DN15098220982209822798227136250136260
DN200127275127275127287127293165313165324
DN250146330146332146343146355213364213394
DN300181380181387181403184450229424229458
DN350184440184447184460222478----
DN400191492191498191518232549----
DN450203542203558203568------
DN500219597219620219624------
DN600222698222734222734------

 

公稱通徑150Lb300Lb600Lb
LDLDLD
2601036011060110
21/2671226712967129
3731357314873148
4731737318079192
58619686215105240
69822298250136265
8127279127307165319
10146339146361213399
12181409181422229456
14184450222485--
16191514232539--
18203549----
20219606----
24222717----


H46-1.0-DN50,H46-1.0-DN65,H46-1.0-DN80,H46-1.0-DN100,H46-1.0-DN125,H46-1.0-DN150,H46-1.0-DN200,H46-1.0-DN250,H46-1.0-DN300,H46-1.0-DN350,H46-1.0-DN400,H46-1.0-DN450,H46-1.0-DN500,H46-1.0-DN600, H46-1.6-DN50,H46-1.6-DN65,H46-1.6-DN80,H46-1.6-DN100,H46-1.6-DN125,H46-1.6-DN150,H46-1.6-DN200,H46-1.6-DN250,H46-1.6-DN300,H46-1.6-DN350, H46-1.6-DN400,H46-1.6-DN450,H46-1.6-DN500,H46-1.6-DN600,H46-2.5-DN50,H46-2.5-DN65,H46-2.5-DN80,H46-2.5-DN100,H46-2.5-DN125,H46-2.5-DN150, H46-2.5-DN200,H46-2.5-DN250,H46-2.5-DN300,H46-2.5-DN350,H46-2.5-DN400,H46-2.5-DN450,H46-2.5-DN500,H46-2.5-DN600,H46-4.0-DN50,H46-4.0-DN65, H46-4.0-DN80,H46-4.0-DN100,H46-4.0-DN125,H46-4.0-DN150,H46-4.0-DN200,H46-4.0-DN250,H46-4.0-DN300,H46-4.0-DN350,H46-4.0-DN400,H46-6.4-DN50, H46-6.4-DN65,H46-6.4-DN80,H46-6.4-DN100,H46-6.4-DN125,H46-6.4-DN150,H46-6.4-DN200,H46-6.4-DN250,H46-6.4-DN300,H46-10.0-DN50,H46-10.0-DN65, H46-10.0-DN80,H46-10.0-DN100,H46-10.0-DN125,H46-10.0-DN150,H46-10.0-DN200,H46-10.0-DN250,H46-10.0-DN300,對夾雙瓣旋啟式止回閥

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