自力式压力控制阀

1 一般资料一般资料 General information 1 1 产品的功能用途和适用范围 产品的功能用途和适用范围 Feature and application 自力式压力调节阀 以下简称压力阀 是一种无需外来能源而只依靠调介质自身的压力变 化进行自动调节压力的节能型产品 具有测量 执行 控制的综合功能 广泛适用于石油 化工 冶金 轻工等工业部门及城市供热 供嗳系统 本产品可用于非腐蚀性 最高温度350 的液体 气体和蒸汽等介质的压力控制装置 Pressure self regulating valve herein after referred to as pressure valve a energy saving product regulates pressure automatically without external energy supply Pressure valve is used for pressure control device of non corrosive liquid gas and steam medium etc that has integrated function of measure performance and control Pressure valve finds us in the field of petroleum chemical industry metallurgy and light industry and city heating system etc 2 2 产品的结构及工作原理 产品的结构及工作原理 Structure and working principle a 产品结构 Structure 本产品为直接作用型自力式压力调节阀 由阀体 阀座 阀芯部件 阀盖 顶盘 上 下膜盖 膜片 弹簧 调节螺母等零部件所组成 其具体结构参见图la 图lb 图lc 图ld所示 Pressure valve is of direct action type which is composed of body seat core parts bonnet highest quotation diaphragm spring adjusting nut and upper and bottom diaphragm cover etc The specific structure sees chart 1a 1b 1c and 1d b 工作原理 Working principle I 作阀后压力调节时的工作原理 见图la 工艺介质的阀前压力Pl经过阀芯 阀座的节流后 变为阀后压力P2 P2经过控制管线输 入执行器的下膜室作用在顶盘上 产生的作用力与弹簧的反作用力相平衡 决定了阀芯 阀 座的相对位置 控制阀后压力 当阀后压力P2增加时 P2作用在顶盘上的作用力也随之增加 此时 顶盘的作用力大于弹簧的反作用力 使阀芯关向阀座的位置 直到顶盘的作用力与弹 簧反作用力相平衡为止 这时 阀芯与阀座之间的流通面积减少 流阻变大 从而使P2降为 设定值 同理 当阀后压力 P2降低时 作用方向与上述相反 这就是阀后压力调节时的工作原理 当需要改变阀后压力P2的设定值时 可调整调节螺母8 1 The working principle of regulating the back of valve s pressure see chart 1a After being throttled by core and seat P1 becomes P2 P1 stands for the front of valve s pressure and P2 stands for the back of valve s pressure Getting through bottom diaphragm room P2 acts on the highest quotation and creates acting force The acting force keeps its balance with reacting force of spring which decides the relative place of core and seat and controls the back of valve s pressure When P2 increases the acting force is also increasing Here the acting force is bigger than the reacting force which made the core close to the seat until balance And the circulation area between core and seat decreases and flow resistance increases thereby P2 fell to the setting value Also when P2 decreases the acting force direction is contrary When P2 s setting value needs to be changed you can regulate the adjusting nut 8 2 Chart 1a ZZYP 16B type valve s back pressure Chart 1b ZZYP 16K type valve s front pressure regulating valve regulating valve Chart 1c ZZYP 16B type pressure difference Chart 1d ZZYP 16K type pressure difference control regulating valve control regulating valve 阀体 body 阀座seat 阀芯 valve core 阀盖bonnet 膜盖 diaphragm cover 膜片 diaphragm 有效弹簧 effective spring 调节螺母 adjusting nut 阀体 body 阀座 seat 阀芯 valve core 阀盖 bonnet 膜盖 diaphragm cover 膜片diaphragm 有效弹簧 effective spring 调节螺母 adjusting nut 图la ZZYP 16B阀后压力调节阀 图lb ZZYP 16K阀前压力调节阀 阀体 body 阀座seat 阀芯 valve core 阀盖bonnet 膜盖 diaphragm cover 膜片diaphragm 有效弹簧 effective spring 调节螺母 adjusting nut 阀体 body 阀座seat 阀芯valve core 阀盖bonnet 膜盖 diaphragm cover 膜片diaphragm 有效弹簧 effective spring 调节螺母 adjusting nut 图lc ZZYP 16B压差压力调节阀 图ld ZZYP 16K压差压力调节阀 3 2 作阀前压力调节时的工作原理 见图lb 工艺介质的阀前压力Pl通过阀芯 阀座节流后变为阀后压力P2 同时Pl通过控制管线输 入执行器的上膜室内作用在顶盘上 产生的作用力与弹簧的反作用力相平衡 决定了阀芯 阀座的相对位置 控制阀前压力 当阀前压力Pl增加时 Pl作用在顶盘上的作用力也随之增 加 此时 顶盘上的作用力大于弹簧的反作用力 使阀芯向离开阀座方向移动 直到顶盘的 作用与弹簧反作力相平衡为止 这时 阀芯与阀座之间流通面积变大 流阻变小 从而使PI 降为设定值 同理 当阀前压力PI降低时 作用方向与上述相反 这就是阀前压力调节时的 工作原理 当需要改变阀前压力PI的设定值时 可调整调节螺母8 2 The working principle of regulating the front of valve s pressure see chart 1b After being throttled by the core and seat P1 becomes P2 P1 stands for the front of valve s pressure and P2 stands for the back of valve s pressure Meanwhile getting through bottom diaphragm room P1 acts on highest quotation and creates acting force The acting force keeps its balance of the core and seat and controls the front of valve s pressure When P1 increases the acting force is also increasing At this time the acting force is bigger than the reacting force which made the core leave the seat until balance Here the circulation area between the core and seat increases and flow resistance decreases thereby P1 fell to the setting value Also when P1 decreases the acting direction is contrary When P1 s setting value needs to be changed you can regulate adjusting nut 8 图le ZZYP DN150 250 图lf ZZYP DN150 250 带加长件 Chart 1e ZZYP DN150 250 Chart 1f ZZYP DN150 250 with lengthen part 差压上升 阀关闭 差压上升 阀开启 Valve closes as the pressure difference ascends Valve opens as the pressure difference ascends 4 3 作差压控制时的工作原理 图lc 图Id及安装示例 工艺介质通过阀节流后 进入被控设备 而被控设备的差压 分别引入阀的上 下膜室 在上 下膜室内产生推力 并加上弹簧反力相平衡 从而确定了阀芯与阀座的相对位置 而 阀芯与阀座的相对位置确定了差压值 P的大小 当被控差压变化时 力的平衡被破坏 从 而带动阀芯运动 而阀芯的运动改变了阀的阻力系数 即控制了被控差压值为设定值 这就 是差压控制的工作原理 3 The working principle of pressure difference control see chart 1c 1b and installation instructions The medium enters controlled equipment after being throttled while the pressure difference of controlled equipment is inducted into the upper and bottom diaphragm room respectively and creates thrust so that P the pressure difference value and the relative place of the core and seat is decided when controlled pressure difference changes the force s balance is damaged that drives the motion of the core However the core s motion changes the resistance coefficient i e it controls the controlled pressure difference value as setting value 3 3 产品的型号 外尺寸及重量 产品的型号 外尺寸及重量 Type Type dimensiondimension andand weightweight a产品型号 Type 本产品型号由控制阀的型号和执行器的型号两部分组合而成 The type is composed of the type of control valve and actuator 控制阀型号Type of control valve ZZYP 执行器型号Type of actuator DA3 DA4 组合后压力阀型号Type of pressure valve after combination 阀后压力调压阀The back of valve s pressure regulating valve ZZYP 16B 阀前压力调压阀The front of valve s pressure regulating valve ZZYP 16K 差压控制调压阀Pressure difference controlled regulating valve 差压上升阀关闭The valve closes as pressure difference ascends ZZYP 16B 差压上升阀开启The valve opens as pressure difference ascends ZZYP 16K 型号举例 Example 例1 ZZYP l6B 阀后压力调压阀 配用DA3型执行器 Example 1 ZZYP l6B the back of valve s pressure regulating valve with DA3 type actuator 例2 ZZYP 16K 阀前压力调压阀 配用DA4型执行器 Example 2 ZZYP 16K the front of valve s pressure regulating valve with DA4 type actuator 例3 ZZYP 16B 差压控制调压阀 配用DA4型执行器 差压上升 阀开启 Example 3 ZZYP 16B pressure difference control regulating valve with DA4 type actuator the valve opens as pressure difference ascends 5 例4 ZZYP 16K 差压控制调压阀 配用DA3型执行器 差压上升 阀关闭 Example 3 ZZYP 16K pressure difference control regulating valve with DA3 type actuator the valve closes as pressure difference ascends b产品外形尺寸及重量 Dimension and weight 控制阀的外形尺寸如图2a 图2b及表l所示 Control valve s external dimension sees chart 2a and 2b and table 1 ZZYPZZYP尺寸及重尺寸及重 ZZYPZZYP typetype dimensiondimension andand weightweight 表表1 1 TableTable 1 1 公称通径 DN l520253240506580l00125l50200250 L mm 190l9018422022225427629835045l45l600670 B mm 2l2212238238240240275275380380295325372 重量 kg weight 6 26 79 71314172933607080140220 图 3 Chart 3 注 压力阀的总高及总重分别为控制阀与执行器高度 重量之和 公称压力 PNl6 PN40 图2a ZZYPDN15 125 图2b ZZYPDN150 250 Chart 2a ZZYPDN15 125 Chart 2b ZZYPDN150 250 DA3DA3执行器尺寸及重量执行器尺寸及重量 图图3a 3a 表表2 2 Dimension and weight of DA3 type actuator Table 2 有效面积 cm2 useful area 3280250630 R mm 172172263680 H mm 435430470520 大约重 II kg weight 7 57 51328 DA4DA4执行器尺寸及重量执行器尺寸及重量 图图3b 3b 表表3 3 Dimension and weight of DA4 type actuator Table 3 有效面积 cm2 useful area 3280250630 R mm 172172263380 H mm 440435440520 大约重 II kg weight 7 57 51328 aDA3 bDA4 6 法兰标准 正常为DIN标准 德国 也可为用户提供下列法兰标准的产品 但订货时应特 列注明 1 JB 中国 2 ANSI 美国 只可提供ANSI 1 50一种 3 JPI 日本 4 JIS 日本 Note The total height of pressure valve is the sum of control valve and actuator s height and the gross weight is their weight s sum Nominal pressure PNl6 PN40 Flange standard normal standard is DIN standard We also offer products of following standard but you should explain in your order 1 JB China 2 ANSI America Only ANSI 150 3 JPI Japan 4 JIS Japan 4 4 附件的型号 种类及外型尺寸 附件的型号 种类及外型尺寸 Accessories Accessories type type sortsort andand dimensiondimension 加长件 适用于温度大于 140 Lengthen part Suitable temperature is over l40 5 产品主要技术参数 产品主要技术参数 Main technical data ZZYP 控制阀技术参数控制阀技术参数 Technical data of ZZYP type control valve 公称通径 DN 15202532405065801001251502002 5 KVS 值 KVS value 3 2582 520325080125160320450630 Z 值 Z value 0 60 60 6O 550 55 O 5 0 50 450 4 O 35 0 30 20 2 PN16 最大压差 P MPA Max pressure difference 1 61 61 61 61 61 61 61 61 51 51 21 01 0 PN40 最大压差 Max pressure difference 2 02 02 02 02 02 02 02 01 51 51 21 01 0 ZZYP液体 liquid 140 气体 gas 80 配隔离罐 with isolation pot 200 最高工作温度 Max working temperatureZZYP 配隔离罐和散热片 with isolation pot and heating sheet l40 用于多顶控制 用于温度 200 Suitable temperature is over l40 Multiple top control Suitable temperature is over 200 7 阀芯材质 Valve core material不锈钢 软密封为橡胶 Stainless steel Soft seal is rubber 最高工作压力 Max working pressure 公称压力 注意 Pmax PN pay attention to Pmax 注 140 300 配隔离罐 加长件 特殊要求可提供不锈钢 应注意工作压力与工作温度之间的关系 Z 值 噪声衡量系数 大于该值将产生明显的噪声 详细计算见自力式调节阀选择指南 滚动膜片适用于水 蒸气或油及其它介质两种 订货时应注明介质种类 是否需要耐油 Note If the temperature is between 140 and 300 isolation pot and lengthen parts are needed Special requirement could be provided with stainless steel Pay attention to the relationship between working pressure and temperature Z value stands for noise measure coefficient If over there will have obvious noise Detailed calculation sees consumer guide The rolling diaphragm is suitable for water steam or oil and other medium Please explain the medium s sort in your order Whether need oil resistant or not DA3 DA4 执行器技术参数 执行器技术参数 Technical data of DA3 DA4 actuator 表 5 Table 5 有效面积 cm2 Useful area 32 80 25063032 80 250630 DA3DA4 O 8 1 60 1 O 6 0 015 0 151 0 1 60 1 1 6 0 015 0 12 0 005 0 0 35 压力设定范围 MPa Pressure setting range 0 3 1 2 0 05 0 3 0 01 0 07 0 005 0 035 保证压力阀正常工作 最小压 差 Pmin MPa Min pressure difference ensuring valve s normal work 0 05 0 04 0 0l 0 005 0 05 0 04 0 0l 0 005 允许上 下膜室之间最大 压 差 MPa Allowable max pressure difference between upper and bottom diaphragm room 2 O 1 250 40 15 2 O 1 250 4 O 15 膜盖 Diaphragm cover 钢板镀锌 galvanized steel sheet 材 质 Material 膜片 Diaphragm EPDM 或 FKM 夹纤维 EPDM or FKM with fibre 控制管线 接头 Control pipeline connector 铜管或钢管 10 1 卡套式接头 Rl 4 Copper or steel pipe 10 1 hoop connector Rl 4 设定值偏差 Setting value difference 8 注 DN150 250不能满足该设定值 可选用指挥器操作型的自力式压力调节阀 EPDM适用于水 蒸气和气体介质 FKM适用于油 水 蒸气及气体介质 订货时应注明介质种类 可根据不同的压力设定范围而选配合适的执行器与控制阀组成调压阀 Note As the setting value could not be satisfied by DN from 150 to 250 you can choose pressure self regulating valve of command machine operating type EPDM is suitable for water steam and gas medium FKM is suitable for oil water steam and gas medium Please explain the medium class in your order The pressure value could be equipped by suitable actuator and control value according to different pressure setting range 6 6 安装示例 安装示例 InstallationInstallation samplesample 下面列举若干个安装示例供用户参考 We will offer you some examples for reference 8 示例1 安装在分站 Example 1 install in branch 示例2 安装在蒸气发生器 Example 2 install in steam producer 示例 3 安装在差压和流量控制场合 示例 4 安装在流量控制场合 Example 3 install in pressure difference and flow control occasion Example 4 install in flow control occasion 示例 5 安装在泵压力控制场合 示例 6 安装在差压维持场合 Example 5 install in pump pressure control occasion Example 6 install in pressure difference maintenance occasion 安装安装 InstallationInstallation l l 现场安装的几点说明 现场安装的几点说明 SiteSite installationinstallation instructionsinstructions a 现场安全 安装压力阀的管道事先不应有压力 压力阀前后的切断阀应关闭 在进行焊接前 应采取适 当的防火措施 b 控制性能 配管系统的压力损失应与计算压力阀尺寸时所考虑的损失相致 进出口应尽量保证一定的直 管段 一般为5D 1 0D 以保证所需的控制性能 c 安装位置 应有足够的空间 便于操作人员安装 调整压力阀 以及保证压力阀和附件的就地拆装和维 护的可能性 d 过滤器 为保证压力阀的正常使用 安装时 应在压力阀前安装过滤器 并定期清洗 在有蒸汽的厂房 内 应有足够的排水和通风系统 e 压力阀组 一般在工艺过程配管中均安装切断阀和旁路阀配成阀组 以适应设备连续操作的需要 当维 修和出现意外情况时 用切断阀隔离 用旁路阀调节 推荐下面图5布置方式 f 周于煤气 天然气压力调节 在室内安装便用时 如果无漏气报警装置 应在执行器加接引流管通到室 外并不得堵塞 以保证安全 阀后压力调节 接在上膜盖接头上 阀前压力调节 接在下膜盖接头上 g 用于减压或泄压的压力阀 使用时不得将膜盖上的无接管的接头堵塞 否则压力阀无法工作 a Site safety There should not have pressure in the pipeline before installation The shut off valve in the front and back of pressure valve should be closed You should take proper fire safe measures before soldered joint b Control performance The pressure loss of piping system should consistent with the considered value The outlet and inlet should ensure certain straight pipeline to ensure needed control performance c Installation place There should have enough room for installing Adjust pressure valve and ensure the possibility of site assembly and maintenance of pressure valve and accessories d Filter When installing the filter should be installed in the front of pressure valve and cleaned regularly to ensure natural use of the valve In steam house ther should have enough drainage and ventilation system e Pressure valve group In piping the shut off valve and by pass valve is usually install into valve group to fit continuous operation of equipment Any accident you could use shut of valve to isolate and by pass valve to regulate Recommend the following installation chart f Used in pressure regulating of coal gas and natural gas If no leakage annuciator you should add guide pipe with no block ensure safety The upper diaphragm cover with the back of valve s pressure and the bottom diaphragm cover with the front of valve s pressure g Applying to reduce or relieve the pressure valve should not block the connector in diaphragm cover Otherwise the valve would out of work 9 调节螺母 Adjusting nut 2 实地安装 实地安装 Field installation a 安装人员首先应认识到压力阀是一种精密的仪表设备 不准碰撞 跌摔 以免损坏 影响产品性 b 在初次开工前和停检修后应先冲洗配管系统 然后安装压力阀 并应保证管道内压力不超过压力阀的极限 值 c 注意务必按压力阀所示的介质流动方向 阀体上的箭头 安装压力阀 d 压力阀应该垂直倒立安装在安装在管道上 执行器在下 控制阀在上 如图5所示 这样可以保证介质的 温度不会传滤到执行器上 当介质温度低于80 时 压力阀可以正立安装 当介质温度高于80 时 压力阀必 须垂直倒立安装 即执行器向下安装 在阀自重较大或有震动的场合应加支承架 e 在压力阀前后应安装压力表 以便设定调整时察看 a Pressure valve is a precision instrument Do not impact and drop or you may damage and affect its performance b You should clean piping system before primary working or after checking When installing you should ensure the pressure limit in the valve is not surpassed c Note that you must install according to flow direction the arrowhead in the body marked in pressure valve d The pressure valve should be installed vertical and headstand in the pipeline The control valve is over the actuator see chart 5 thus the medium s temperature would not spread into the actuator When the temperature is below 80 the pressure valve could be installed stand When over it should be vertical and headstand i e the actuator is installed downward There should have pedestal shelf under bigger deadweight or shaky cases e There should have pressure meter in the front and back of pressure valve in order to check when setting and adjusting 操作与便用操作与便用 Operation 注 压力阀在出厂时 并未着现场条件设定压力 差压 使用前必须按以下步骤进行设定 Note The pressure valve is not set before leaving factory so you should use it according to the following step l l 操作步骤 操作步骤 OperationOperation processprocess 压力阀安装完毕后 应先缓慢开启阀后的截止阀 然后缓慢开启阀前的截止阀 观察压力阀前后压力表 调节压力阀的调节螺母 调节螺母位于执行器弹簧端头 见本说明书第l或第2页结构简图所示 对于DA3型执行 器 右旋设定压力升高 左旋设定压力降低 对于DA4执行器 右旋设定压力降低 左旋设定压力升高 使 之达到阀前压或阀后压或者差压要求 稳定一段时间 以获得理想的阀前压力或阀后压力或者差压值 作液 体压力控制时 应略松开控制线接口 排除执行器里面的空气 然后拧紧 特别注意 a 当把执行器与控制阀分离时 必须释放阀内的所有压力 b 如果被控介质温度超过140 时 DNl5 125需配隔离罐 应先将温度低且被调介质同类液体介 质通过隔离罐口注入膜室和隔离罐 必须注满 c 如果被控介质温度超过140 时 DNl50 250需配加长件和隔离罐 这时 除在隔离罐中冷媒 外 还应在加长件中注冷媒 After installation you should open the globe valve in the back of pressure valve slowly and then the front Observe the pressure meter and regulate the adjusting nut The adjusting nut lies in the spring end of actuator See P1 and P2 to reach normal requirement and acquire ideal pressure value after stable As liquid pressure controls you should loosen the control line adaptor and scavenge the actuator and then fastening Attention a When actuator and control valve are separated you should release aii pressure in the valve b If controlled medium s temperature exceeds 140 those valves that DN from 15 to 125 need isolation pot The diaphragm room and isolation pot must be filled with same liquid medium c If controlled medium s temperature exceeds 140 those valves that DN from 15 to 125 need lengthen part and isolation pot The refrigerant should be filled into the lengthen part besides isolation pot 截止阀 Globe valve 过滤器 Filter 截止阀 Globe valve 打开灌充 open 10 2 2 调整步骤 调整步骤 AdjustingAdjusting processprocess 若发现压力阀的压力不太理想 可微调压力阀的调整螺母 以获得到理想数值 If the pressure is not found ideal you can trim the adjusting nut to get ideal value 维修及故障排除维修及故障排除 MaintenanceMaintenance andand malfunctionmalfunction solutionssolutions 1 1 维修 维修 MaintenanceMaintenance 在正常操作条件下 压力阀是不用维修的 特殊情况需要维修时 应由专业人员来进行 It is no need to maintenance under normal circumstance It should be serviced by professional when repaired 2 2 故障排除 故障排除 MalfunctionMalfunction solutionssolutions 如出现故障可按表6查找原因 Any malfunction you could look up the table 6 表6 table 6 故障现象Malfunctions故障原因 Possible causes排除方法 Solutions 控制管线堵塞或阀门中有杂质 Control pipeline blocks up or impurity in valve 清洗控制管线及阀门 Clean control pipeline ad valve 膜片破裂 Diaphragm damaged更换膜片 Replace it 强簧折断 Spring broke更换弹簧 Replace it 自动控制失灵 Automatic control failure阀前后买际压差小于阀最小工作压力差 The actual pressure difference of the front and back of valve is lower than the min working pressure difference 更换压力阀 Replace pressure valve 阀口径选择过大或过小 Bigger or smaller of valve caliber 更换合适阀门 Use suitable valve 波绞管损坏 Ballows damaged 更换波纹管部件 Replace bellows part 被控参数不稳定 Unstable controlled data 阀芯 阀座磨损 The a