The ZDLP, ZDLN electronic type electric single-seat, double seat control valve, electronic straight stroke electric actuator and through dual-oriented single-seat, two-seat valves. Compact, quick action, the pressure drop, valve capacity, flow characteristics of precision, to accept adjust the instrument input (4-20mA DC 0-10mA DC or 1-5V DC) and other control signals and single-phase power can be directly control operation, to achieve automatic adjustment of process piping fluid medium control, precise control of gas, liquid, steam and other media widely used in process parameters such as pressure, flow, temperature, level and other parameters remain at a given value.
Structural features:
A. ZDLP, ZDLN electronic electric single seat, two-seat control valve is the instrument of execution units in the automation control system, AC220V power supply voltage, power, and accept input from DCS, PLC systems, or adjusting instruments, operation, etc. (4 - 20mA ,0-10mA or 1-5VDC) current signal or voltage signal, you can control the operation of mechanical and electrical integration structure, with the position feedback of the machine servo operation and signal, position indicator, manual operation, strong functions, reliable, simple connection, high regulation accuracy, a straight stroke output of the thrust to change the valve opening displacement to achieve the precise regulation and control of process parameters of the fluid medium.
Two. ZDLP, ZDLN single-seat, two-seat control valve according to the mode of action can be divided into;
Positive role: power closed - normally open valve position (when the signal increases downward displacement), "B type"
Reaction: power open - normally closed valve position (when the signal increases upward displacement), "K-type"
3. ZDLP electric control valve is through single seat casting ball valve, single-seat piston valve core apply to allow leakage of small valve before the valve after the small differential pressure in the workplace.
4. ZDLP type electric single-seat control valve for direct low flow resistance to a single seat, double-oriented structure, it is only one seat and a plunger-shaped spool has closed performance for media leaks and adjust the accuracy, there are strict requirements of the occasion, but the valve structure on the reasons, the upper and lower stem of the unbalanced force, especially in the nominal diameter large condition more obvious, and thus the valve is only suitable for smaller occasions working pressure.
5 Electric regulating valve in ZDLN casting ball valve through engine, two-seat piston-type spool, applies to a large pressure difference, the flow is large and not very clean medium and leakage requirements are not strict occasion
6. For the direct low flow resistance two-seater, the ZDLN electric two-seat valve, dual-oriented structure, the spool in the displacement process is stable and reliable, the two-seat valve body consists of two valve seat, the fluid medium through the upper and lower valve core seat outflow, with the flow, allowing the pressure, the unbalanced force is small, is a balanced structure of two-seat valve
7. (Logarithmic) Sex change the spool-shaped design; the different shape of the spool will be the value of the different flow characteristics: equal percentage, linear features
This series of products are widely used in chemical, petroleum, metallurgy, power plant, textile, paper and pharmaceutical industrial production process of automatic regulation and remote control.
Standard room temperature, high temperature heat type, bellows seal type, jacket and insulation type varieties. Product pressure grade PN1.6 4.0 6.4MPa; nominal diameter DN20-300mm; applicable fluid temperature -100 - +500 ° C
执行机构主要技术参数：
|
型号 |
输出推力N |
速度mm/s |
最大行程（mm） |
型号 |
输出推力N |
速度mm/s |
最大行程（mm |
|
381LSA-08
381LXA-08 |
800
800 |
4.2
4.2 |
30 |
PSL201 |
1000 |
0.4/1.2 |
50 |
|
381LSA-20
381LXA-20 |
2000
2000 |
2.1
2.1 |
30 |
PSL202 |
2000 |
0.4/1.2 |
50 |
|
381LSB-30
381LXB-30 |
3000
3000 |
3.5
3.5 |
60 |
PSL204 |
4500 |
0.4/1.2 |
50 |
|
381LSB-50
381LXB-50 |
5000
5000 |
1.7
1.7 |
60 |
PSL208 |
8000 |
1.0 |
50 |
|
381LSC-65 |
6500 |
2.8 |
100 |
PSL210 |
10000 |
1, .0 |
50 |
|
381LSC-99 |
10000 |
2.0 |
100 |
PSL312 |
12000 |
1.0 |
65 |
|
381LSC-160 |
16000 |
1.0 |
100 |
PSL325 |
25000 |
1.0 |
100 |
|
(信号线用屏蔽线) 防护等级：相当IP55 隔爆标志：ExdⅡBT4 带手柄 |
(信号线用屏蔽线) 防护等级：IP65 带手轮 | 性能指标：
|
项目 |
指标值 |
|
基本误差％ |
381L ±2.5； PSL±1.0 |
|
回差％ |
381L ±2.0； PSL±1.0 |
|
死区％ |
1.0 |
|
始终点偏差％ |
电开 |
始点 |
±2.5 |
|
终点 |
±2.5 |
|
电关 |
始点 |
±2.5 |
|
终点 |
±2.5 |
|
可调范围 |
50：1 |
|
额定行程偏差％ |
2.5 | 允许压差 MPa （ZDLP型）：
|
公称通径（mm） |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
阀座直径（mm） |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
允许压差 MPa |
2.0 |
3.0 |
2.0 |
1.8 |
1.05 |
1.16 |
0.67 |
0.47 |
0.39 |
0.26 |
0.16 |
1.1 |
0.5 | 允许压差 MPa （ZDLN型）：
|
公称通径（mm） |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
阀座直径（mm） |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
允许压差 MPa |
≤公称压力 |
4.0 |
3.4 | 主要零件材料及适用温度、介质：
|
公称通径mm |
DN15-DN300 |
|
材料代号 |
C（WCB） |
P（304） |
R（316） |
|
主要
零件 |
阀体、阀盖 |
WCB（ZG230-450） |
ZG1Cr18Ni9Ti（304） |
ZG1Cr18Ni12Mo2Ti（316） |
|
阀芯、阀座 |
1Cr18Ni9Ti（304）或司钛莱合金堆焊 |
1Cr18Ni9Ti（304）或司钛莱合金堆焊 |
1Cr18Ni12Mo2Ti(316)或司钛莱合金堆焊 |
|
阀杆 |
2Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
|
填料 |
V型聚四氟乙烯（F4）、柔性石墨、不锈钢波纹管 |
|
垫片 |
增强聚四氟乙烯（F4） 、不锈钢垫片、金属石墨缠绕垫片 |
|
推杆、衬套 |
2Cr13 |
|
适用
工况 |
适用介质 |
水蒸汽油品类气液体 |
硝酸碱类腐蚀性气液体 |
醋酸类等腐蚀性气液体 |
|
常温型 |
-30～+250 F4：≤200℃ |
-40～+250 F4：≤200℃ |
-40～+250℃ F4：≤200℃ |
|
高温型 |
-30～+450℃ |
-40～+500℃ |
-40～+500℃ |
|
低温型 |
|
-40～-60℃、 -60～-100℃ |
主要技术参数：
|
公称通径mm |
20 |
25 |
32 |
40 |
50<, /SPAN> |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
阀座直径mm |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
额定流量
系数Kv |
单座 |
5 |
8 |
12 |
20 |
32 |
50 |
80 |
120 |
200 |
280 |
450 |
800 |
1200 |
|
双座 |
|
10 |
16 |
25 |
40 |
63 |
100 |
160 |
250 |
400 |
630 |
1000 |
1600 |
|
额定行程L（mm） |
10 |
16 |
25 |
40 |
60 |
100 |
|
执行器型号 |
3810L |
381LS-8 |
381LS-20 |
381LS-30 |
381LS-50 |
381LS-65 |
381LS-99 |
|
PSL |
PSL201 |
PSL202 |
PSL204 |
PSL208 |
PSL312 |
PSL325 |
|
防爆型 |
381LX-20 |
381LX-30 |
381LX-50 |
381LX-65 |
381LX-99 |
|
电源电压 |
AC220V 50Hz |
|
信号范围 |
4～20mA DC 0～10mA DC或1～5V DC 0～10V DC |
|
作用模式 |
电开式（K）型、电关式（B）型 |
|
故障状态时 |
全开、全关、自锁保位 |
|
流量特性 |
等百分比、直线、快开性 |
|
允许泄漏量（L/h） |
单座阀：≤10-4×阀的额定容量；双座阀：≤10-3×阀的额定容量 |
|
固有可调比R |
50:1 |
|
公称压力PN(MPa) |
1.6 2.5 4.0 6.4 |
产品应用规范：
性能GB/T7387 结构长度GB/T12221-05 材料：GB/T12228-12230
法兰连接：JB/T79-94 GB/T9113
符合：IEC60534标准 外形尺寸
|
公通径(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
L(mm) |
PN1.6MPa |
180 |
185 |
200 |
220 |
250 |
275 |
305 |
350 |
410 |
450 |
550 |
670 |
770 |
|
PN4.0MPa |
185 |
190 |
210 |
230 |
255 |
285 |
310 |
355 |
425 |
460 |
560 |
690 |
800 |
|
PN6.4MPa |
190 |
200 |
220 |
240 |
265 |
295 |
320 |
370 |
440 |
475 |
570 |
752 |
820 |
|
H1(mm) |
单座 |
60 |
115 |
120 |
130 |
145 |
180 |
195 |
200 |
245 |
255 |
295 |
380 |
435 |
|
H1(mm) |
双座 |
|
120 |
120 |
140 |
145 |
190 |
210 |
220 |
270 |
280 |
320 |
450 |
465 |
|
配PSL |
H(mm)≈ |
普通型 |
704 |
747 |
835 |
910 |
955 |
1100 |
1120 |
1140 |
1210 |
1220 |
1270 |
1810 |
1890 |
|
散热片型 |
855 |
898 |
990 , |
1060 |
1110 |
1277 |
1195 |
1320 |
1420 |
1430 |
1490 |
2066 |
2140 |
|
D(mm) |
176 |
225 |
|
配381L |
H(mm)≈ |
普通型 |
620 |
680 |
683 |
758 |
768 |
990 |
1022 |
1050 |
1340 |
1360 |
1440 |
1710 |
1770 |
|
散热片型 |
770 |
830 |
835 |
910 |
920 |
1160 |
1195 |
1220 |
1540 |
1570 |
1660 |
1960 |
2030 |
|
D(mm) |
225 |
310 |
|
低温型 |
-100℃ |
H2 |
500 |
600 |
700 |
|
|
|
H≈ |
1110 |
1120 |
1310 |
1320 |
1330 |
1460 |
1478 |
1497 |
1850 |
1860 |
1900 |
|
|
