2 雙偏心雙向金屬密封蝶閥

      用途 ：

      雙偏心雙向密封系列蝶閥是我公司應廣大用戶要求，精心研究設計的新一代產品。該系列蝶閥引進國內外*制造技術，以*新穎的結構，獲得高品質的性能。該閥結構合理，密封性能可靠、流阻小、壓差低、驅動靈活省力，使用壽命倍增。符合GB12238-89《法蘭和對夾連接蝶閥》和JB/T8527-1997《金屬密封蝶閥》標準，并參照美國ANSI/AWWAC504標準，采用美國CAD輔助軟件設計。雙偏心，即軸向偏心，閥軸中心線不在閥板密封面上；徑向偏心：閥軸的中心不在閥門通道的中心上，閥板采用雙平板桁架式多流道結構，在流速較高時，各流道水流能夠互相制衡，避免閥板出現顫抖現象，確保閥門穩定性。特殊的設計，特殊的幾何結構，使閥門具有越關越緊得功能，當打開閥門時，只要閥軸稍微旋轉，閥板即全部脫離閥座，減少了摩擦力，是開啟力矩呈現zui小*狀態，密封嚴實可靠，經久耐用，廣泛的用于水利功能、自來水、電力循環水、石油、石化等工業管道上作截斷介質流動。

    Double biased bidirectionla pressure metal seal series butterfly valve is the our company should the user communities request,carefully studies the design the new generation of product.Thisserids butterfly valve has introduced the domestic and foreign advanced manufactures technology,by the unique novel structure,obtains the high quality the performance.This valve stucture teasonable,the seal strict relable,resistance small,the differential pressure is low,the actuation nimbly reduces effort,the service life multipies,Conforms to GB12238-89”Flange And to Clamps Connects Reed balbe”and JB/t8527-1997”Metal seal butterfly valve” the standard,and refers to the American ANSI/AWWWAC504 standard,uses the American CAD software assistance design.Double bias ,namely axial bias, valve axle not in valve board packing surface;Radial direction bias:The valve axle in the valve passage center core,the valve board does not use the plate posture multi-flow channels structure,is higher when the speed of flow,various flow chanels current of water can mutually make the graduated arm,avoids the valve board appearing shivers the phenomenon,guarantees the valve the stability.The special design,the special geometry structure,enable the valve board to habe pass tighter function,when turns on the valve,so long as the valve shaft slightly revolves,the valve board namely compley is separated form the valve seat,reduced the friction force causes to open the moment of force to present the smallest optimum condition,the seal solid is reliable, durable,the widespread application to industry pipeline and so hydraulic engineering,running water,electric power circulating  water,petroleum,chemical industry makes the interruption to flow.

    特點 Features：

1、    蝶閥為雙向承壓，雙向金屬密封，特殊的結構形式可任意調整密封比壓，采用偏心S形錐形閥座密封面，使密封 面不易損壞，提高閥門的使用壽命。

2、    操作扭轉力矩小，轉90度啟閉，輕便迅速。

3、    流阻小，具有良好的水利特性，流量特性近試傾斜直線，節能效果好，雙向密封對水流無要求。

4、    閥板采用符合流體學性能的雙平板桁架式多流道設計。

       型號說明 Model explanation：

公稱壓力 Nominal pressure	0.6Mpa	1.0 Mpa	1.6 Mpa	2.5 Mpa
公稱通徑 Nominal diameter	80～3000mm	80～3000 mm	80～2000 mm	80～1200 mm
密封試驗 Seal test	0.66 Mpa	1.1 Mpa	1.76 Mpa	2.75 Mpa
殼體強度試驗 Shell structural test	0.9 Mpa	1.5 Mpa	2.4 Mpa	3.75 Mpa
適用溫度 Applicable temperature	≤300℃
適用介質 Applicable Medium	熱水、蒸汽、煤氣、酸、堿、食品 Hot water,vapor,coal gas,acid, alkali,food
驅動形式 Actuation form	渦輪傳動、電動、氣動 Worm drive,electrically operated,air operated

 

 

 

 

 

 

 

 

 

 

 

 

 

       外型及連接尺寸D942HS-PN（DN80-2000）

 

 

   

公稱通徑 （DN）	主要外型及連接尺寸（mm）
	L	D	D1	D2	b	H	H1	L1	L2	Z-Φd
80	114	200	160	132	20	370	100	40	130	8-18
100	127	220	180	156	22	370	125	48	145	8-18
125	140	250	210	184	22	420	135	70	175	8-18
150	140	285	240	211	24	505	172	70	175	8-22
200	152	340	295	266	24	610	240	90	200	12-22
250	165	405	355	319	26	665	265	90	200	12-26
300	178	460	410	370	28	755	295	125	280	12-26
350	190	520	470	429	30	860	330	125	280	16-26
400	216	580	525	480	32	890	370	125	280	16-30
450	222	640	585	548	34	966	395	130	280	20-30
500	229	715	650	609	36	1040	430	130	280	20-33
600	267	840	770	720	36	1285	490	175	365	20-36
700	292	910	840	794	40	1395	545	175	365	24-36
800	318	1025	950	901	42	1560	615	225	440	24-39
900	330	1125	1050	1001	41	1700	700	225	440	28-39
1000	410	1255	1170	1112	46	1865	715	290	490	28-42
1200	470	1485	1390	1328	52	2125	865	290	490	32-48
1400	530	1685	1590	1350	58	2340	950	290	490	26-48
1600	600	1930	1820	1750	64	2580	1070	410	600	40-55
1800	600	1930	1820	1750	64	2580	1070	410	600	40-55
2000	760	2345	2230	2150	70	3200	1350	500	800	48-60