安全切断【duàn】阀由出口压力来控制【zhì】 指挥器(导阀)动【dòng】作,从而实现切断【duàn】 气体【tǐ】向下游输【shū】送的功能。“超压【yā】切【qiē】 断 ”功能即当安全【quán】切【qiē】断阀【fá】下游信【xìn】号 采集点处的压力超【chāo】出弹簧所【suǒ】设定的 范围【wéi】后 ,集点处的压力信号【hào】反馈给 指挥【huī】器(导阀),使指【zhǐ】挥器(导【dǎo】阀)活 塞向上移动,从而使拉杆脱扣,重锤【chuí】 向下冲击撞针【zhēn】 ,撞针向下【xià】移动使得 挂钩与翻板脱开【kāi】 ,翻板向【xiàng】下关闭阀 门,从而【ér】切断气【qì】体向下游的输【shū】送,保【bǎo】 护【hù】下游设备【bèi】及【jí】管线的安全。
公称尺寸 Nominal size |
NPS1~ 12 |
公称压力 Nominal pressure |
Class150~900 |
执行标准 Standard |
EN 14382 |
阀体材料 Body material |
A352 LCC ,WCB |
关断时间 On-off time |
≤0.5s (取决于操作压力,阀门公称尺寸) ≤0.5s (Depending on the operating pressure, the valve diameter) |
设定偏差 Setting variability |
±2.5% |
适用介质 Suitable medium |
天然气及非腐蚀性气体 Natural gas and non-corrosive gases |
适用温度 Suitable temperature |
-29℃ ~+60℃ ;-46℃ ~+60℃ |
应 用 Application |
长输管线输气站、城市燃气调压站、工业用气等压力控制系统中 的安全装置 Safety device for long-distance pipeline gas station, city gas pressure regulating stations, industrial gas pressure control system |
@ 工作【zuò】原理 / Working principle
安全【quán】切【qiē】断阀由出口压【yā】力来控制 指挥【huī】器(导【dǎo】阀)动【dòng】作,从而实现切断 气【qì】体向下游输送的【de】功能。“超压切 断 ”功能即【jí】当安全切断阀下游【yóu】信【xìn】号 采集点处的压力超出【chū】弹簧所设定的 范围后 ,集点处【chù】的压力信【xìn】号反馈【kuì】给 指挥器(导阀),使指【zhǐ】挥【huī】器(导阀)活 塞向【xiàng】上移【yí】动【dòng】,从【cóng】而使拉【lā】杆脱【tuō】扣【kòu】,重锤 向下冲击撞针 ,撞针向下【xià】移动使得 挂钩与翻【fān】板脱开 ,翻板向下关【guān】闭【bì】阀 门,从而切断气体【tǐ】向下【xià】游【yóu】的输送,保 护【hù】下游设备【bèi】及管线的安全。
“ 欠压【yā】切断【duàn】 ”功能【néng】即当安全切断 阀下游信号采【cǎi】集点处的压力低于弹【dàn】 簧所【suǒ】设定【dìng】的范围后,采集点处的压力 信号反馈给指挥器(导阀),使指挥器 (导阀)活塞【sāi】向下移动,从而【ér】使拉杆脱 扣【kòu】,重【chóng】锤向下冲击撞针,撞针向下移【yí】 动【dòng】使得挂钩与翻板脱开,翻板向下关 闭阀门 ,从而切断气【qì】体向下游【yóu】的【de】输 送,保护下【xià】游设备【bèi】及【jí】管线的【de】安全【quán】。
Safety on-off valve is controlled by the outlet pressure pilot (pilot valve) action, so as to cut off gas to the downstream transport."Super-pressure on-off" feature that is, when the safety on-off valve downstream signal acquisition point pres-sure exceeds the range set by the spring collection point at the pressure signal back to the pilot (pilot valve), the pilot (pilot valve) piston moving up, so that the trolley trip, hammer down the impact of the firing pin and firing pin moves down makes disengage the hook and flap, flap valve is closed down, there- by cutting off gas to the downstream transport, protection of downstream equipment and pipeline safety.
"Undervoltage lockout" function safety on-off valve down-stream signal acquisition at the point of pressure is lower than the range set by the spring collection point at the pres-sure signal back to the pilot (pilot valve), the pilot (pilot valve) the piston moves down, so that the trolley trip, hammer downthe impact of the firing pin and firing pin moves down makes disengage the hook and flap, flap valve is closed down,thereby cutting off the gas to the downstream conveyor to prevent energy waste and not safe transport, protection ofdownstream equipment and pipeline safety.
@ 产品【pǐn】技术参数【shù】 / Product technical parameter
指挥器型号 Controller model |
弹簧编号及颜色 Spring number and color |
超压切断 Overrun close |
欠压切断 Lower limit close |
切断精度 Accuracy |
|
|
序号 Number |
颜色 Color |
设定范围(MPa) Setting range |
设定范围(MPa) Setting range |
AG |
AS-R-G1xx |
1 2 3 4 5 6 |
红 Red 橙 Orange 黄Yellow 绿 Green 蓝 Blue 紫 Purple |
0.1~ 1 0.5~2 1.5~4.5 4 ~7 6~9 8~ 11 |
- |
20/ 10 5/2.5 2.5/1 1 1 1 |
|
7 8 |
黑 Black 白 White |
|
0.01~0.3 0.1~0.5 |
20/ 10 |
AS-R-G2xx |
1 2 3 4 5 |
红 Red 橙 Orange 黄 Yellow 绿 Green 蓝 Blue |
1~4 3~6 5~8 7~ 10 9~ 11 |
|
2.5/1 1 1 1 1 |
|
6 |
银灰 Silver-gray |
- |
0.1~0.5 |
20/ 10 |
@ 主要零部【bù】件材【cái】料 / Material of main part