AS 轴流式【shì】安全切断阀AS axial on-off valve,轴流式:是指流体到控制区以【yǐ】前在阀的内体【tǐ】和外【wài】体之间有一轴向对称的流道 ,有呈流【liú】线【xiàn】型【xíng】并【bìng】均匀对【duì】称的【de】自 由流通路径,大大降低了【le】流体局部高速流、紊流、喷射【shè】流等的冲击【jī】,且【qiě】提高了阀门的稳定性【xìng】 .
公称尺寸 Nominal size |
NPS8~48 |
公称压力 Nominal pressure |
Class600~2500 |
阀体材料 Body material |
A352 LCC,A350 LF2 |
执行标准 Standard |
IEC 60534 |
关断时间 On-off time |
≤ 2S |
适用介质 Suitable medium |
天然气、液化气、石油及液化化工品 |
适用温度 Suitable temperature |
-46℃~ +150℃ |
泄漏等级 Leakage |
符合 FCI-9-21,IEC 60534-4 VI 级 In accordace with FCI-9-21,IEC 60534-4 VI |
应 用 Application |
用于长输管线输油、输气站、调压站、用于紧急情况下的快速切断 Long-distance pipeline oil, gas stations, pressure regulat- ing stations for export pressure quickly shut off |
执行机构 Actuator |
气动、液压弹簧复位执行机构 Pneumatic,spring-hydraulic linkage |
@ 产【chǎn】品特点【diǎn】 / Product feature:
轴流式:是指流体到控制区以前在【zài】阀的内【nèi】体和【hé】外体之【zhī】间有一轴向对称的【de】流道 ,有【yǒu】呈流线型并均【jun1】匀对称的自 由【yóu】流通路径,大大降【jiàng】低【dī】了流体【tǐ】局部高速流、紊流、喷【pēn】射流等的冲击,且提【tí】高了阀【fá】门的稳定性 .
“Axial flow”describes the in-line symmetrical flow path between the valve inner and outer body
before the flow reaches the trim zone,with the free flow path was streamlined and symmetrical,
reducing the local high speed flow of the fluid,turbulence flow jet stream, such as shock, and to
improve the stability of the valve.
1、轴流式安全【quán】切【qiē】断阀【fá】在高集成压力保护系统(HIPPS)中用于保护【hù】低【dī】压力等【děng】级避免超压,通过【guò】切断压力界【jiè】面【miàn】来 避免超压。
Axial on-off valves in HIPPS applications high integrity pressure protecting systems (HIPPS)
are used to protect lower rated downstream sections from overpressure, by isolating these
sections from the source of the overpressure.
2、轴流式,流通能力高且压降低。
Axial flow type, high capacity and low pressure drop.
3、切断时【shí】间快,≤36" 的阀门均可【kě】以 2 秒切断【duàn】,≤ 12" 的 阀门可在 1 秒内【nèi】切断。 Fast shut off, the valves ≤36" shut off within 2s and ≤ 12" within 1s.
4、全压力平衡阀芯。
Mechanically fully pressure balanced design.
5、在阀【fá】门全开位置主密封自动保护尽可能的避免了【le】高速介【jiè】质的冲刷破坏。另外,主密【mì】封在行程中不与【yǔ】其它【tā】 部件【jiàn】接触【chù】。
Main seal is protected from erosional velocities in the open position. Furthermore the main seal
is not in contact with other parts during the stroke of the valve.
6、线【xiàn】性的活塞式弹簧关执行机构,通过多层弹簧【huáng】关【guān】闭动作具有【yǒu】很高的【de】安【ān】全【quán】可靠性。
Rugged linear piston actuator, closing action by means of multiple parallel springs,have high
reliability.
7、活塞【sāi】式弹簧关【guān】自【zì】驱动式【shì】执行机构不【bú】需要任何外部动力源,保证阀门动作的安全性和可靠【kào】性,并【bìng】且节能【néng】 环保。
Self-contained piston actuator with failing close function selected for this project to ensure
valve action safety and reliability, furthermore energy saving and environmental protection.
8、轴流【liú】式切断阀已在世【shì】界范围内得到认可,广泛 应用于【yú】气液场合,包括气液的处理、输送 、储存【cún】 和分配过程。这些气液流【liú】体【tǐ】可以【yǐ】从【cóng】原油到成品 油【yóu】, 从气液【yè】比很高的多相流体到含砂量【liàng】极高的 天然气。
Axial on-off valves combine high quality engineering with a thorough understanding of the needs of the oil and gas produc-tion, process industries and companies involved with transmission, distribution and storage of fluids.
@ 应用【yòng】范围 / Application
典型 HIPPS 系统
Typical HIPPS system
典型 HIPPS 系统由以下三部分组成:
Typical HIPPS system includes the following three parts.
● 最【zuì】终执行元件 Final element
● 逻辑控制【zhì】器 Logic solver● 检【jiǎn】测仪【yí】表 Sensors