自力式压力控制阀.doc

一般资料 General information 1、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、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 valves pressure :（see chart 1a）After being throttled by core and seat, P1 becomes P2.（P1 stands for the front of valves pressure and P2 stands for the back of valves 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 valves 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. 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Chart 1a ZZYP-16B type valves back pressure Chart 1b ZZYP-16K type valves front pressure 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 nutregulating valve 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图lc ZZYP-16B压差压力调节阀 图ld ZZYP-16K压差压力调节阀Chart 1c ZZYP-16B type pressure difference Chart 1d ZZYP-16K type pressure difference control regulating valve control regulating valve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） (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 valves pressure:（see chart 1b）After being throttled by the core and seat, P1 becomes P2,（P1 stands for the front of valves pressure and P2 stands for the back of valves 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 valves 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 P1s setting value needs to be changed, you can regulate adjusting nut 8. (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 forces balance is damaged, that drives the motion of the core. However, the cores motion changes the resistance coefficient, i.e. it controls the controlled pressure difference value as setting value. 3、产品的型号、外尺寸及重量 Type, dimension and weight 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：DA3DA4 组合后压力阀型号Type of pressure valve after combination： 阀后压力调压阀The back of valves pressure regulating valve：ZZYP16B 阀前压力调压阀The front of valves 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：ZZYPl6B 阀后压力调压阀配用DA3型执行器。Example 1: ZZYPl6B the back of valves pressure regulating valve with DA3 type actuator 例2：ZZYP16K 阀前压力调压阀。配用DA4型执行器。 Example 2: ZZYP16K the front of valves pressure regulating valve with DA4 type actuator 例3：ZZYP16B 差压控制调压阀配用DA4型执行器(差压上升、阀开启)。Example 3: ZZYP16B pressure difference control regulating valve with DA4 type actuator（the valve opens as pressure difference ascends） 例4：ZZYP16K 差压控制调压阀配用DA3型执行器(差压上升、阀关闭)。Example 3: ZZYP16K 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 valves external dimension sees chart 2a and 2b and table 1.图2a ZZYPDN15-125 图2b ZZYPDN150-250Chart 2a ZZYPDN15-125 Chart 2b ZZYPDN150-250ZZYP尺寸及重 ZZYP type dimension and weight 表1 Table 1 公称通径DNl520253240506580l00125l50200250L(mm)190l9018422022225427629835045l45l600670B(mm)2l2212238238240240275275380380295325372重量(kg)weight6.26.79.71314172933607080140220DA3执行器尺寸及重量(图3a) 表2Dimension and weight of DA3 type actuator Table 2有效面积(cm2)useful area3280250630R(mm)172172263680H(mm)435430470520大约重II(kg)weight7.57.51328DA4执行器尺寸及重量(图3b) 表3Dimension and weight of DA4 type actuator Table 3有效面积(cm2)useful area3280250630R(mm)172172263380H(mm)440435440520大约重II(kg)weight7.57.51328 aDA3 bDA4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 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 actuators height, and the gross weight is their weights sum. Nominal pressure: PNl6：PN40Flange 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)JISl40) （用于多顶控制） （用于温度200） （ Suitable temperature is over l40）（ Multiple top control） （ Suitable temperature is over 200）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 Main technical dataZZYP控制阀技术参数 Technical data of ZZYP type control valve公称通径DN15202532405065801001251502002.5KVS值 KVS value3.2582.520325080125160320450630Z值 Z value0.60.60.6O.550.55O50.50.450.4O350.30-20.2PN16最大压差P(MPA)Max. pressure difference1.61.61.61.61.61.61.61.61.51.51.21.01.0PN40最大压差Max. pressure difference2.02.02.02.02.02.02.02.01.51.51.21.01.0最高工作温度 Max. working temperatureZZYP液体liquid140；气体gas80ZZYP配隔离罐with isolation pot200300配隔离罐和散热片with isolation pot and heating sheet 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