使 用 说 明 书Use specification版本：AEdition：A快速逆止阀(液动)Quick check valve(hydraulic)型号: ESSV-80-25Type: ESSV-80-25物号: 5-7310-5108-02Material No: 5-7310-5108-02嘉兴爱克斯机械技术有限公司ZHEJIANG JIAXING EXPERT MACHINE TECHNIQUE CO., LTD快速逆止阀(液动) 目录 1.基本介绍1.1说明书的使用1.2开箱检查1.3型号说明1.4技术参数1.5结构功能2.安装规范2.1快速逆止阀(液动)的就位2.2管道的安装2.3结构图和外形图3.操作规程3.1开启抽汽状态3.2关闭抽汽状态3.3原理图4. 维护指南1．基本介绍1.1说明书的使用● 在安装和使用本产品前请仔细阅读此安装运行说明书，以免给您造成不必要的损失。

● 本说明书是针对多个型号和物号的抽气速关阀产品而编写，用户在使用说明书时，必须完全熟悉产品的型号和物号，然后对应自己的产品。

1.2 开箱检查● 用户在开箱后，首先应检查文件资料、产品标牌、合格证上所列型号、规格及技术参数是否与订货合同一致，名称、数量与实物是否相符。

● 检查外观表面有无磕碰、划痕，所配零部件有无损伤。

1.3 型号说明E S S V—*—*⑴ ⑵ ⑶⑴ 快速逆止阀(液动)代号⑵ 止回阀通径⑶ 止回阀压力等级1.4技术参数● 阀门材料:一般情况下,当压力等级≤300LB时,阀体材料为WCB;当压力等级≥600LB时,阀体材料为1Cr5Mo,特殊情况除外.● 阀门压力-温度等级对应表a.阀体材料：WCB工作温度（℃）压力等级200 250 300350 400 425 435 445 455最大工作压力（MPa）150LB/1.6MPa 1.6 1.4 1.25 1.1 1.0 0.9 0.8 0.7 0.64300LB/4.0MPa 4.0 3.6 3.2 2.8 2.5 2.2 2.0 1.8 1.6600LB/10.0MPa 10.0 9.0 8.0 7.1 6.4 5.6 5.0 4.5 4.0900LB/16.0MPa 16.0 14.0 12.5 11.2 10.0 9.0 8.0 7.1 6.41500LB/25.0MPa 25.0 22.5 20.0 18.0 16.0 14.0 12.5 11.2 10.0b.阀体材料：1Cr5Mo工作温度（℃）压力等级200 325 390430450470490500510 530 550最大工作压力（MPa）150LB/1.6MPa 1.6 1.4 1.25 1.1 1.00.90.80.70.64 0.50 0.40300LB/4.0MPa 4.0 3.6 3.2 2.8 2.5 2.2 2.0 1.8 1.6 1.25 1.0600LB/10.0MPa 10.0 9.0 8.07.1 6.4 5.6 5.0 4.5 4.0 3.2 2.5900LB/16.0MPa 16.0 14.0 12.511.210.09.08.07.1 6.4 5.0 4.01500LB/25.0MPa 25.0 22.5 20.018.016.014.012.511.210.0 8.0 6.4● 信号油压力：0.6～0.8MPa● 电磁阀电源: 24VDC 110VDV 220VDC 110VAC 220VAC（如抽气速关阀自身配有电磁阀，其电源参数详见外形图）● 关闭时间：＜1S1.5 结构功能● 本抽汽速关阀由止回阀、油缸组件、辅助滑阀、行程开关(是否有,按用户要求并看原理图和外形图)、连杆机构等组成。

2.安装规范2.1抽气速关阀的就位● 本抽气速关阀应水平安装在管道上，四周应留有一定的空间，以方便操作和维修。

● 安装时应确认汽体的流向，不得装反。

2.2管道的安装● 所有管道连接前，应确认所有管件均已清洗合格。

● 抽气速关阀在与蒸汽管道连接前，应仔细检查止回阀，阀体内不得留有任何杂物。

● 各管接头应在调试前充分拧紧，不得有任何渗漏现象出现。

2.3 结构图和外形图3.操作规程3.1开启抽汽状态● 首先检查信号油压力是否在0.6-0.8MPa之间。

● 应确认电磁阀是在带电还是失电状态下油路导通。

● 如果电磁阀是在带电状态下油路导通，则在抽汽前，必须先使电磁阀带电，压力油进入辅助滑阀P口, 由于K口的油压作用，使辅助滑阀P口与B口导通进入油缸下腔，油缸活塞克服弹簧的作用力，向上运动,此时使止回阀内的压杆向上翻转, 当油缸到达最高点时，此时碰到上位的行程开关输出到位信号。

从而达到止回阀的阀瓣能在蒸汽压力的推动下自由打开。

● 如果电磁阀是在失电状态下油路导通，其油缸执行机构的工作与上相同。

（注：抽汽前，必须先确认油缸在最高端，即阀杆升至顶端）。

3.2关闭抽汽状态● 当需要关闭抽汽速关阀时, 如果电磁阀是在带电状态下油路导通，则将电磁阀失电, 使辅助滑阀K失压，切断了辅助滑阀P与B口的通路。

同时油缸下腔的压力油通过辅助滑阀大通径的T口迅速排油释压，此时油缸活塞在油缸内的弹簧力作用下迅速下移, 带动止回阀内压杆迫使止回阀的阀瓣在瞬间关闭。

当油缸到达最低点时，此时碰到下位的行程开关输出到位信号。

3.3原理图4.维护指南4.1在汽轮机正常运行时，油缸的执行机构应充分外露散热，不能将其用隔热层或外壳包裹。

4.2在抽汽过程中，不能发生阀体的明显抖动。

4.3建议用户运行两、三年后，对油缸的执行机构进行一次全面的清洗和更换密封件。

4.4如果您需要我们进行帮助处理故障，请提供下列情况：● 抽汽速关阀的型号、物号（见铭牌）● 汽轮机机组号● 故障的情况● 已经采取的措施和初步原因分析4.5 下表列出了用户在调试过程中出现的常见故障。

可以看出油质的不干净是造成故障的主要原因。

所以在管道清洗和安装中应引起高度重视。

故障内容 可能的原因 处理办法油缸执行机构不动作 1.电磁阀无电源输入2.电磁阀卡死3.止回阀转动轴中盘根太紧1.检查电源和电压与所配电磁阀相同。

2.拆卸清洗或调换电磁阀3.以保证蒸汽无泄露为前提下，适当放松转动轴盘根紧力。

油缸执行机构上升缓慢或出现抖动 1.压缩油压力过低。

2.止回阀转动轴中盘根太紧3.止回阀转动轴卡涩1. 将油缸进油压力调高（见3.1）2.以保证蒸汽无泄露为前提下，适当放松转动轴盘根紧力3.拆卸修理油缸执行机构下降速度缓慢 1. 执行机构卡涩2. 止回阀转动轴中盘根太紧1.检查个运动接点是否有锈迹和杂质，清理打磨2. 以保证蒸汽无泄露为前提下，适当放松转动轴盘根紧力Quick check valve(hydraulic) catalog 1. Basic introduction1.1 Specification’s use1.2Box check-up1.3 Type description1.4 Technical parameter1.5 Structure function2. Install criterion2.1 Quick check valve(hydraulic)’s place2.2 Pipeline’s install2.3 Structure diagram and outline diagram3. Operate regulations3.1 Open extraction steam state3.2 Close extraction steam state3.3 Principle diagram4. Maintenance manualQuick check valve(air operated) Basic introduction 1．Basic introduction1.1 Specification’s use●Before use and install this product,please carefully read the specification,otherwise it will leadunnecessary losing.●The specification apply to multi-product type and material number of extraction trip valve.before use it,user should fully familiar with the product type and material number,then corresponding the product type and material number.1.2 Box check-up● After open the packing box,first please check out document、product scutcheon、type、spec、technical parameters whether are accord to product order or not,name and quantity whether are accord to product or not.● Inspect the a ppearance whether have knock or nick or not, all the parts wether have damnify or not.1.3 Type descriptionE S S V—*—*⑴⑵⑶⑴ode of hdraulic extraction Trip ValveC⑵ Drift diameter of check valve⑶ Pressure rating of check valve1.4 Technical parameter●Mat erial of valve body:normally,when pressure rating≤300LB,material of valve body is WCB,when pressure rating≥600LB,material of valve body is 1Cr5Mo,except special situation.● Corresponding sheet of valve pressure–temperature ratinga.Material of valve body：WCBWork temperature（℃）Pressure rating200 250 300350 400 425 435 445 455Maximal work pressure（MPa）150LB/1.6MPa 1.6 1.4 1.25 1.1 1.0 0.9 0.8 0.7 0.64300LB/4.0MPa 4.0 3.6 3.2 2.8 2.5 2.2 2.0 1.8 1.6600LB/10.0MPa 10.0 9.0 8.0 7.1 6.4 5.6 5.0 4.5 4.0900LB/16.0MPa 16.0 14.0 12.5 11.2 10.0 9.0 8.0 7.1 6.41500LB/25.0MPa 25.0 22.5 20.0 18.0 16.0 14.0 12.5 11.2 10.0b. Material of valve body ：1Cr5Mo● Pressure of compresse air ：0.6～0.8MPa● Power supply of solenoid valve: 24VDC 110VDV 220VDC 110VAC 220VAC （if match solenoid valve,parameter of power supply details please see outline diagram ） ● Close time ：＜1S 1.5 Structure function● The extraction steam trip valve consists of check valve,oil cylinder subassembly,assistant slide valve,limit switch (have or not,according to user’s requirement and see principle diagram and outline diagram),link mechanism and so on..2. Install criterion2.1 Quick check valve(hydraulic)’s place● The extraction steam trip valve should horizontal install on pipeline,all around should leave some space for operate and maintain.● When installing,make sure steam’s flow direction,do not reverse.2.2 Pipeline’s install● Before connect pipe,make sure all pipe already clean cleanness.● Before extraction steam trip valve connect with steam pipeline ，should carefully check check valve,do not leave any sundries in the valve.● Before debugging,all pipe tie-in should fully screw down,and have no leakage2.3 Structure diagram and Outline diagramWork temperature（℃）200 325 390430450470490500510 530 550Pressure ratingMaximal work pressure（MPa）150LB/1.6MPa 1.6 1.4 1.25 1.1 1.00.90.80.70.64 0.50 0.40300LB/4.0MPa 4.0 3.6 3.2 2.8 2.5 2.2 2.0 1.8 1.6 1.25 1.0600LB/10.0MPa 10.0 9.0 8.07.1 6.4 5.6 5.0 4.5 4.0 3.2 2.5900LB/16.0MPa 16.0 14.0 12.511.210.09.08.07.1 6.4 5.0 4.01500LB/25.0MPa25.022.520.018.016.014.012.511.210.08.06.43. Operate regulations3.1 Open extraction steam state● First check signal oil’s pressure is at 0.6-0.8MPa or not● make sure oil path’s communicate is under solenoid valve state of electriferous or dis- electriferous● if oil path’s communicate is under solenoid valve state of electriferous.Before extraction steam,first make solenoid valve at electriferous state,pressure oil enter into assistant slide valve’s p gob,because the effect of K gob’s oil pressure,assistant slide valve’s P gob is communicate with B gob,then enter into oil cylinder’s down antrum.oil cylinder’s piston overcome spring force,move to upside.at this time check valve’s strut overturn to upside,when oil cylinder reach to vertex,at this time come into contact with limit switch,have place signal input.then check valve’s disc can open freely under steam pressure’s thrust..● if oil path’s communicate is under solenoid valve state of dis-electriferous,oil cylinder execute structure’s working is the same as above.（note ：Before extraction steam，make sure oil cylinder at the tiptop,it is to say valve rod rise to top.）3.2 Close extraction steam state● When need to close extraction steam trip valve, if oil path’s communicate is under solenoid valve state of electriferous,make solenoid valve at dis-electriferous state,assistant slide valve is lose pressure,the path of assistant slide valve from P to B gob is cut off.pressure oil of oil cylinder’s down antrum quickly exhause pressure by assistant slide valve’s Tgob,at this time oil cylinder’s piston quickly move downward under spring force’s effect,then it bring along strut,check valve’s disc close instant. when cylinder reach to rock bottom,at this time come into contact with limit switch,have place signal input3.3 Principle diagramQuick check valve(hydraulic) Maintenance manual4. Maintenance manual4.1 When steam turbine normally running ，execute structure of oil cylinder should fully expose and heat dissipation,should not wrap thermofin or crust .4.2 During extracting steam,valve body should not appear obvious dithering.4.3 After running two or three years,advice user all sided cleanout with execute structure of oil cylinder and exchange airproof parts.4.4 if need help to treat with malfunction,please supply element ：● Extraction steam trip valve ’s type 、material number （see nameplate ） ● Turbine number of steam turbine ● Malfunction describe● Take measures and cause analyse primary4.5 The sheet below list any frequently malfunction which user always fall across during debugging.Un-pureness oil is the main cause of malfunction.So should pay high attention to install and pipe cleanMalfunctionCauseTreat measureexecute structure of oil cylinder do no action1.solenoid valve have no power supply input.2.solenoid valve block down.3.rotate axis packing of check valve too tight 1.check power supply and voltage is the sameas matched solenoid valve. 2.Unpick and wash or replace solenoid valve. 3.on the premise of no steam leak,relax rotateaxis packing properlyexecute structure of oil cylinder go up slowly or appear dithering.1.pressure of compress oiltoo low.2.rotate axis packing ofcheck valve too tight3.rotate axis of check valveretardarce.1.promote inlet oil pressure of oil cylinder （look 3.1）2.on the premise of no steam leak,relax rotateaxis packing properly3.unpick and repairexecute structure of oil cylinder fall down slowly 1.execute structureretardarce .2.rotate axis packing ofcheck valve too tight1.check the movement connect point are haveany rust and impurities or not,clean andburnish it.2.on the premise of no steam leak,relax rotateaxis packing properly.。