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 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.
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 valve`s back pressure Chart 1b ZZYP-16K type valve`s 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 nut
regulating 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 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.
(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、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：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）
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.

图2a ZZYPDN15-125 图2b ZZYPDN150-250
Chart 2a ZZYPDN15-125 Chart 2b ZZYPDN150-250

ZZYP尺寸及重 ZZYP type dimension and weight 表1 Table 1
公称通径DN
l5
20
25
32
40
50
65
80
l00
125
l50
200
250
L(mm)
190
l90
184
220
222
254
276
298
350
45l
45l
600
670
B(mm)
2l2
212
238
238
240
240
275
275
380
380
295
325
372
重量(kg)weight
6.2
6.7
9.7
13
14
17
29
33
60
70
80
140
220

DA3执行器尺寸及重量(图3a) 表2
Dimension and weight of DA3 type actuator Table 2
有效面积(cm2)useful area
32
80
250
630
φR(mm)
172
172
263
680
H(mm)
435
430
470
520
大约重II(kg)weight
7.5
7.5
13
28
DA4执行器尺寸及重量(图3b) 表3
Dimension and weight of DA4 type actuator Table 3
有效面积(cm2)useful area
32
80
250
630
φR(mm)
172
172
263
380
H(mm)
440
435
440
520
大约重II(kg)weight
7.5
7.5
13
28

aDA3 bDA4

图3 Chart 3

注：①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。
②公称压力：PNl6：PN40．
③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: ①The total height of pressure valve is the sum of control valve and actuator`s height, and the gross weight is their weight`s sum.
②Nominal pressure: PNl6：PN40
③Flange 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、附件的型号、种类及外型尺寸 Accessories` type, sort and dimension

隔离罐 Isolation port 组合件Assembly parts 900/118 散热片DT Heating sheet DT
(用于温度>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℃）

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 data
ZZYP控制阀技术参数 Technical data of ZZYP type control valve
公称通径DN
15
20
25
32
40
50
65
80
100
125
150
200
2.5
KVS值 KVS value
3.2
5
8
2.5
20
32
50
80
125
160
320
450
630
Z值 Z value
0.6
0.6
0.6
O.55
0.55
O．5
0.5
0.45
0.4
O．35
0.3
0-2
0.2
PN16最大压差△P(MPA)
Max. pressure difference
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.5
1.5
1.2
1.0
1.0
PN40最大压差
Max. pressure difference
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.5
1.5
1.2
1.0
1.0
最高工作温度 Max. working temperature
ZZYP
液体liquid≤140℃；气体gas≤80℃
ZZYP
配隔离罐with isolation pot<200℃
※
≤300℃
配隔离罐和散热片with isolation pot and heating sheet <350℃
允许泄漏量
Allowable leakage
(规定试验条件下)
（under prescribed condition）
ZZYP
4×10-4×阀额定容量 rated volume
ZZYP
10气泡bubble／min
20气泡bubble／min
40气泡bubble／min
压力平衡元件
Pressure balancing components
波纹管bellows
滚动膜片
Rolling diaphragm
公称压力PN
PN 1 6(1.6MPa)；PN40(4.0MPa)
阀体材质※※Body material
PNl6铸铁cast iron(温度temperature≤200℃)；
PN40：铸钢cast steel（工作温度temperature≤350℃）
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。Technical data of DA3/DA4 actuator
表5 Table 5
有效面积(cm2)Useful area
32※
80※
250
630
32※
80※
250
630
压力设定范围(MPa)
Pressure setting range
DA3
DA4
O.8～1.6
0.1～O.6
0.015～0.15
0.005～
0.035
1.0～1.6
0.1～1.6
0.015～0.12
0.005～0.035
0.3～1.2
0.05～0.3
0.01～0.07

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
1.25
0.4
0.15
2．O
1.25
0.4
O．15
材 质 Material
膜盖Diaphragm cover：钢板镀锌 galvanized steel sheet
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、安装示例 Installation sample

下面列举若干个安装示例供用户参考 We will offer you some examples for reference

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 Installation
l、现场安装的几点说明 Site installation instructions
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