- 电动油桶泵
- 气动隔膜泵
- 电动隔膜泵
- 卫生级隔膜泵
- 手动隔膜泵
- 粉体气动隔膜泵
- 计量泵
- 气液混合泵
- 排污泵
- 真空泵
- 离心泵
-
耐腐蚀泵
- 螺杆泵
-
化工泵
- 旋涡泵
- 自吸泵
- 多级泵
- 油泵
-
消防泵
-
控制柜
-
潜水泵
- 磁力泵
-
转子泵
-
消防(生活)供水设备
- 管道泵
-
其他泵系列
-
气动隔膜泵、潜水排污泵、...
- 减压阀
-
排污阀
- 电磁阀
- 球阀
- 排气阀
- 过滤器
- 蝶阀
- 呼吸阀、阻火器系列
- 疏水阀
- 截止阀
-
水利控制阀
-
电磁阀中央空调自动控制系...
- 仪表阀/针形阀
- 闸阀
- 隔膜阀
- 柱塞阀
-
管夹阀
- 止回阀
- 旋塞阀
- **阀
-
排泥阀
- 调节阀
- 电站阀门
- 石油/天然气阀门
-
卫生级阀门系列
- 平衡阀
- 氨气阀/氧气阀门
- 防腐阀门
- 黄铜阀门
- 外国标准
-
视镜系列
-
污水处理
-
液位计
- 密封产品
- 消防专用阀门
-
往复泵
-
真空渗漏补漏设备
-
其他阀门
【温州铸造低温闸阀】【铸造低温闸阀应用】【铸造低温闸阀技术参数】【英科牌铸造低温闸阀】【铸造低温闸阀性能】【铸造低温闸阀维护】【铸造低温闸阀原理】【铸造低温闸阀价格】【铸造低温闸阀型号】【铸造低温闸阀厂家】【永嘉铸造低温闸阀】【铸造低温闸阀规格】【铸造低温闸阀尺寸】【铸造低温闸阀口径】【永嘉县英科泵阀制造有限公司】【铸造低温闸阀特点】【铸造低温闸阀】【铸造低温闸阀概述】【铸造低温闸阀选型】【浙江铸造低温闸阀】【上海铸造低温闸阀】
铸造低温闸阀
Cast Cryogenic Gate Valves
铸造低温闸阀概述
液化气体如氧、氮、氩、天然气、氢或氦(-218oC)的生产、运输和储存,存在着几个技术难题。Velan一家采用的加长阀帽铸造阀门更**更有效。
The production, transport and storage of liquefied gases such as oxygen, nitrogen, argon, natural gas, hydrogen or helium (down to - 425°F), presents several technical problems. Velan specially-adapted extended bonnet cast valves offer safe and efficient service.
铸造低温闸阀材料选用 MATERIALS
-
阀体和阀帽:阀体和阀帽采用奥氏体不锈钢铸件,具有更好的撞击强度,较小的热损耗,更加耐腐蚀。
Body and bonnet: Austenitic stainless steel castings used for bodies and bonnets offer excellent impact strength, minimal heat loss and protection against corrosion. -
阀杆:奥氏体不锈钢。为了抗磨损,阀杆也采用A479等级XM-19材料,抗拉强度更好,即使在超低温环境,在阀杆接触点处,仍然具有优异的低摩擦和无磨损运动的性能。
Stem: Austenitic stainless steel. To reduce galling, stems are also offered in A479 grade XM-19 with high tensile strength even at extreme low temperatures, excellent low friction and galling-free movement at points of stem contact. -
接触液体的部件:奥氏体不锈钢和钨铬钴合金6。
Wetted parts: All Austenitic stainless steel and Stellite 6. -
阀杆螺母/轭架衬套:奥氏体球墨铸铁Gr. D-2C。
Stem nut/yoke bushing: Austenitic ductile iron Gr. D-2C. -
填料:通过绝缘气体柱防止PTFE或石墨填料冻结凝固。
Packing: PTFE or graphite packing protected from freezing by a column of insulating gas. -
阀座面:采用钨铬钴合金6,避免磨损和擦伤。
如果需要紧密关闭,截止阀和止回阀都会配置四氟乙烯、PTFE或其它软镶嵌件。
Seating faces: Stellite 6 is used to prevent seizing and galling.
When extremely tight shutoff is required, globe and check valves are supplied with Neoflon, PTFE or other soft inserts. -
螺栓:应力硬化奥氏体不锈钢。
Bolting: Strain-hardened Austenitic stainless steel. -
阀杆螺母的润滑:Exxon Nebule No. 930-AA或Shell Darina EPI或相同的产品。
Lubrication of stem nut: Exxon Nebula Lubriplate No. 930-AA or Shell Darina EPI or equivalent.
铸造低温闸阀结构特征 DESIGN FEATURES:
-
具有足够的气体柱长度的加长阀帽,通常由用户指定,配置在所有阀门上,使得阀杆填料与低温液体之间保持足够的距离,从而能够保持自身的性能。
Extended bonnets with sufficient gas column length, usually specified by customer, are supplied for all valves to keep stem packing at sufficient distance away from the cold fluid to remain functional. -
适用于低温环境的钨铬钴合金阀座面的柔性楔板。
Flexible wedges with Stellite seating faces for cryogenic service. -
备有可用于截止阀,活塞和旋启式止回阀阀瓣的四氟乙烯镶嵌件。
Neoflon inserts are available for globe, piston, and swing check discs. -
清洁处理:所有低温阀门都**进行脱脂和清洗,管路端口都经过密封,以防止污染。
Cleaning: All cryogenic valves are thoroughly degreased and cleaned and pipe ends are sealed to prevent contamination.
铸造低温闸阀执行标准 Administer Standard
设计与制造 Design and Manufacture |
结构长度 |
法兰尺寸 Flange Dimension |
压力-温度 Pressure Temperature Lating |
试验-检验 Inspection and Test |
API 602 | ANSI B16.10 | ANSI B16.5 | ANSI B16.34 | API 598 |
铸造低温闸阀压力试验 Pressure Test
公称压力PN(Lb)NominalPressure | 强度试验Shell Test |
水密封试验 Water Seal Test |
气密封试验 Air Seal Test |
|||
MPa | Lbf/in2 | MPa | Lbf/in2 | MPa | Lbf/in2 | |
150 | 3.0 | 430 | 2.2 | 315 | 0.4-0.7 | 60-100 |
300 | 7.7 | 1110 | 5.7 | 815 | ||
600 | 15.3 | 2220 | 11.3 | 1630 |
铸造低温闸阀主要零件材料及性能 Main Part Materials and Property
体 盖 板(瓣) Body Cover Disc |
阀杆 Stem |
密封面 Sealing Face |
垫片 Sealing Shim |
填料 Packing |
工作温度℃ Working Temperature | 适用介质Suitable Medium |
LCB | 431 |
STL/STL |
1Cr13/柔性石墨 低温石棉 1Cr13/Flexible Graphite SUB-Zero asbestos
|
柔性石墨
Flexible Graphite PTFE 浸聚四氟乙烯石棉绳 Asbestos String With PTFE Soaked
|
-46 |
丙烷/丙烯
甲醇/乙烷 煤气/液氨 Propane Propylene Methanol Coal-gas Liquid Ammonia |
LC1 | -60 | |||||
LC2 | -73 | |||||
LC3 | CrF321 | -101 | ||||
LC4 | -115 | |||||
CF8 | -196 |
液化气体表 TABLE OF LIQUEFIED GASES
类型
Type
沸点
Boiling Point
液体密度
Liquid
Density
lb/ft.3
类型
Type
沸点
Boiling Point
液体密度
Liquid
Density
lb/ft.3
oC
oF
oC
oF
天然气
Natural gas
(LNG)
-168
-270
26
空气
Air
-194.4
-318
57.87
甲烷(CH4)
Methane
(CH4)
-161.5
-258
26.20
氮 (N2)
Nitrogen (N2)
-195.8
-320
50.45
氧 (O2)
Oxygen (O2)
-182.9
-296
71.20
氢 (H2)
Hydrogen (H2)
-252.7
-423
4.43
氩 (Ar)
Argon (Ar)
-185.9
-303
878.40
氦 (He)
Helium (He)
-268.9
-452
7.82
二氧化碳
Carbon
Dioxide
(CO2)
-78.5
-109
50.60
优良零度
Absolute
zero
-273.16
-460
-
铸造低温闸阀主要尺寸和重量 Size Main Dimensions and Weight
DN | 150Lb 主要尺寸 Dimensions (mm) |
重量(kg)Weight |
||||||||
mm | in | L | D | D1 | D2 | b | n-φd | H | D0 | |
25 | 1 | 127 | 108 | 79.2 | 51 | 14.2 | 4-16 | 350 | 120 | 9 |
32 | 11/4 | 140 | 117 | 89 | 63 | 16 | 4-16 | 385 | 120 | 11 |
40 | 11/2 | 165 | 127 | 98.5 | 73 | 17.5 | 4-16 | 420 | 150 | 15 |
50 | 2 | 178 | 152 | 120.5 | 92 | 19 | 4-19 | 540 | 150 | 23 |
65 | 11/2 | 190 | 178 | 139.7 | 105 | 22.4 | 4-19 | 610 | 180 | 27 |
80 | 3 | 203 | 190 | 152.5 | 127 | 24 | 4-19 | 690 | 200 | 40 |
100 | 4 | 229 | 229 | 190.5 | 157 | 24 | 8-19 | 780 | 200 | 50 |
125 | 5 | 254 | 254 | 215.9 | 186 | 24 | 8-22.5 | 930 | 250 | 70 |
150 | 6 | 267 | 279 | 241.3 | 216 | 25.4 | 8-22.5 | 980 | 250 | 85 |
200 | 8 | 292 | 343 | 298.5 | 270 | 28.4 | 8-22.5 | 1180 | 280 | 135 |
250 | 10 | 330 | 406 | 362 | 324 | 30.2 | 12-25.4 | 1390 | 300 | 180 |
300 | 12 | 356 | 483 | 431.8 | 381 | 32 | 12-25.4 | 1620 | 350 | 265 |
350 | 14 | 381 | 533 | 476.3 | 413 | 35 | 12-29 | 1810 | 350 | 420 |
400 | 16 | 406 | 597 | 539.8 | 470 | 36.6 | 16-29 | 1970 | 400 | 550 |
300Lb 凸面法兰 RF | ||||||||||
50 | 2 | 216 | 165 | 127 | 92 | 22.4 | 8-19 | 575 | 200 | 30 |
65 | 21/2 | 241 | 190 | 149.4 | 105 | 25.4 | 8-22.5 | 635 | 240 | 38 |
80 | 3 | 283 | 210 | 168.1 | 127 | 28.4 | 8-22.5 | 715 | 300 | 51 |
100 | 4 | 305 | 254 | 200.2 | 157 | 31.8 | 8-22.5 | 815 | 350 | 79 |
125 | 5 | 381 | 279 | 235 | 186 | 35 | 8-22.5 | 965 | 400 | 115 |
150 | 6 | 403 | 318 | 269.7 | 216 | 36.6 | 12-22.5 | 1025 | 400 | 140 |
200 | 8 | 419 | 381 | 330.2 | 270 | 41.2 | 12-25.4 | 1225 | 400 | 220 |
250 | 10 | 457 | 444 | 387.4 | 324 | 47.8 | 16-28.5 | 1440 | 450 | 290 |
300 | 12 | 502 | 521 | 450.8 | 381 | 50.8 | 16-32 | 1665 | 500 | 410 |
350 | 14 | 762 | 584 | 514.4 | 413 | 54 | 20-32 | 1880 | 600 | 600 |
400 | 16 | 838 | 648 | 571.5 | 470 | 57.2 | 20-35 | 2050 | 650 | 750 |
600Lb 凸面法兰 RF | ||||||||||
50 | 2 | 292 | 165 | 127 | 92 | 33 | 8-19 | 630 | 280 | 45 |
65 | 21/2 | 330 | 190 | 149.4 | 105 | 36 | 8-22.5 | 700 | 300 | 58 |
80 | 3 | 356 | 210 | 168.1 | 127 | 39 | 8-22.5 | 760 | 300 | 75 |
100 | 4 | 432 | 273 | 216 | 157 | 45 | 8-25.4 | 900 | 400 | 126 |
125 | 5 | 511 | 330 | 266.7 | 186 | 52 | 8-28.5 | 990 | 450 | 186 |
150 | 6 | 559 | 356 | 292.1 | 216 | 55 | 12-28.5 | 1070 | 500 | 260 |
200 | 8 | 660 | 419 | 349.3 | 270 | 63 | 12-32 | 1280 | 600 | 385 |
250 | 10 | 787 | 508 | 431.8 | 324 | 71 | 16-35 | 1500 | 650 | 500 |
300 | 12 | 838 | 559 | 489 | 381 | 74 | 20-35 | 1740 | 700 | 700 |