TYH968Y electric drain control valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
TYH968Y electric drain control valves
features
In order to improve the efficiency of power, steam turbine all have set heat system, equipped with high pressure heater. To ensure the water heater having waterlevel running, prevent heater running at non-water level, steam turbine steam into next level and lower efficiency and safety of steam heating equipment, in the water system it has hydrophobic regulator, according to the water heater water level signal, automatic switch drain adjustable valve opening, make water heater in a maintained fixed range. Hydrophobic regulator working conditions are poor, most are in two-phase fluid (i.e. tonic work under state), and it was running condition, belong to throttle cavitation is quite serious, to a certain degree of cavitation is not to trap the regulator, in this situation the water heat is not guaranteed to run by water level. So it reduces the turbine operation efficiency. Therefore, the selection of small cavitation, low noise, simple structure, reliable performance of hydrophobic regulator is particularly important. In view of the above conditions, our research, design and manufacture new hydrophobic regulator, it is in the original hydrophobic regulator, and on the basis of absorbing foreign experience, on the structure, material is changed, makes the valve have a good performance. Due to the reasonable valve spool and seat contact angle, the valve has no leakage phenomenon in the closed position, Manufacturing flow hood and valve core material adopt the high-quality stainless steel material, even in two-phase flow and throttling condition, the cavitation is also very slow, prolong the valve service life, the noise is small. The valve design uses simple structure, when interior parts are damaged, remove bonnet nuts, then can remove all parts, optional change any parts, maintenance is very convenient.
TYH968Y series heating water level regulator is composed by electric actuator and drain control valve. Electric control valve input is DC signal that sent from regulator, after amplification of the servo amplifier drive actuator, produced axial thrust, driving the valve movement, causing medium flow changes, adjusting the system parameters. While actuator sends a signal of the valve position for servo amplifiers comparision, make the valve in a corresponding position of the input signal, finishing the servo adjusting task.
structure
angle structure
straight structure
technical parameter and performance indicators
Project technical performance index
Basic error no more than ± 2.5﹪
Back differential (%) less than 1.5 ﹪
Dead zone (%) less than 3 ﹪
Leakage 0.01% x rated capacity
Body: WCB and WC6, 20CrMo
Valve core: 316 stainless steel
Enveloped: 17-4PH
Stem: 17-4PH
Seat: 316 stainless steel
main technical parameters
| ＤＮ(mm) | 50 | 80 | 100 | 150 | 200 | 250 | 300 |
| flow characteristic | 比approximately linear, equal percentage | ||||||
| PＮ(ＭPa) | 2.5/6.4 | ||||||
| connection | welding | ||||||
| equipped actuator | ＺＫＤ | ||||||
| stroke L(mm) | 57.6 | 88.2 | |||||
| max pressure differential △Ｐ(MPa) | 0.5/3 | ||||||
| rated flow ratio Cv | 44 | 99 | 175 | 395 | 640 | 1000 | 1440 |
| working temperature t (℃) | ≤450 | ≤450 | |||||
| applicable medium | water | ||||||
Note: 1. This model has flange, right angle, and flange right angle
2 also can match pneumatic actuators or HQ smart actuators
external dimensions
| DN(mm) | 50 | 80 | 100 | 150 | 200 | 250 | 300 |
| H(mm) | 860 | 918 | 918 | 918 | 1460 | 1690 | 1690 |
| H1(mm) | 120 | 248 | 248 | 248 | 360 | 470 | 470 |
| L(mm) | 300 | 372 | 372 | 372 | 490 | 610 | 610 |
| D1(mm) | 90 | 150 | 180 | 200 | 244 | 355 | 420 |
| D2(mm) | 76 | 104 | 127 | 168 | 210 | 270 | 320 |
| D3(mm) | 50 | 80 | 100 | 140 | 180 | 230 | 270 |
