BRIEF DESCRIPTIONS
Pressure Reducing and Temperature Reducing Device is the ultimate selection for high pressure and temperature steam reduction service, the system employs many advanced concept and benefits to offer with best solution with effective performance of high pressure and temperature conditions.
Pressure Reducing and Temperature Reducing Device adopted with highly pressure rated forged body of PRV with pilot plug design which gives supreme stability and controlling performance during continuous operation under high pressure and temperature, its design pressure is <14.0 MPa, design temperature is < 570 DegreeC, steam flow range is from 10% to 100%.
DESIGN PRINCIPLE
Layout |
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Assemble Parts |
Basic Parameters |
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Pressure Reducing System |
Available inlet pressure: P1<14.0 MPa |
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Pressure Reducing Valve |
Available inlet temperature: T1<570 DegreeC |
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Orifice Plate |
Available Inlet flow rate: 10%~100% |
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Noise Level: <85 dbA |
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Desuperheater System |
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Classical Venturi design |
Pressure Class |
Custom-design, |
Double Venturi Design |
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Multiple Nozzle with Venturi Design |
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Annular Nozzle with Venturi Design |
Size |
From DN200 to DN700 (8" to 28") |
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Additional sizes on request |
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Feed Water Control System |
Design Temperature |
Maximal. 570 Degree C |
Feed Water Control Valve |
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Strainer and Globe Valve |
Actuator |
Pneumatic |
Check Valve |
Other actuators on request |
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Electric |
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Safety System |
Installation |
Horizontal |
Safety Valve |
Connection |
Flange (ASME B16.5) |
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Butt weld (Acc to request) |
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Instruments System |
Valves |
SA 105 |
Pressure Gauge |
SA 182 F11 |
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Thermometer |
SA 182 F22 |
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Pressure Transmitter |
SA 182 F91 |
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Thermocouple |
Additional Materials on request |
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Pipes |
SA-106B |
Others Parts |
SA-355 P11 |
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Connection Pipe |
SA-355 P22 |
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Counter Flange and Fastens |
SA-355 P91 |
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Additional Materials on request |
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Applications |
Apply Standards |
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Power plant requirements for desuperheated steam |
NB/T47033-2013 |
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supplying units having limited operating temperatures. |
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Control steam temperature and pressure to dryers in paper industry and sugar mills industry |
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Reduction and control of superheated steam,where excess temperatures will harm the product |
PRESSURE REDUCING & DESUPERHEATING PART
Basic Control |
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Main Parts |
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NY963Y HP Steam Pressure Reducing Valve Vital to the safe and efficient operation of a power plant, the NY963/663Y Series pressure reducing valve has been designed for ultimate reliability. It employs many new technology with advanced procession method to ensure the best performance for high pressure and temperature service. |
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Venturi Concept and Multiple Nozzle The venturi design is based on a sophisticated concept. The upstream steam comes from venturi chamber with accelerated velocity, which turns the spray water and flows with it through the mixing module where steam and water meld together with very high contacting efficiency. The design brings many advantages including minimal pressure drop, shorter installation length and higher range ability, also there is no moving parts which ensure the stability and low maintenance cost in future operation. |
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Feed Water Control Valve The most excellent of cage guided control valve is its balance characteristic, for plug balance port’s function, fluid pressure acted on static unbalance force of plug, it reduced unbalance force, then valve can be configured actuator smaller than conventional control valves. With balance type characteristic, LT661Y/961Y feed water control valve is designed to focus on high pressure drops, effectively reduce the effects of cavitation and the noise in the high pressure drops services which is especially suitable for feed water application.
(Details please find control valve brochure) |
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Layout |
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SIZE AND DIMENSION
DRAWING |
No |
Item Name |
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1 |
Pressure Reducing Valve |
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2 |
Multipe Nozzle |
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3 |
Steam Pipeline |
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4 |
Safety Valve |
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5 |
Pressure Gauge |
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6 |
Bimetal Thermometer |
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7 |
Globe Valve |
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8 |
Strainer |
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12 |
Check Valve |
11 |
Feed Water Control Valve |
10 |
Throttle Valve |
9 |
Orifice Plate |
No |
CODE |
PRESSURE REUDCE VALVE |
STEAM PIPE OUTLET |
WATER CONTROL VALVE |
SAFETY VALVE |
1 |
GWY601 |
DN50 |
DN50 |
DN80 |
DN20 |
2 |
GWY601 |
DN80 |
DN65 |
DN100 |
DN25 |
3 |
GWY601 |
DN100 |
DN80 |
DN150 |
DN32 |
4 |
GWY601 |
DN125 |
DN100 |
DN200 |
DN40 |
5 |
GWY601 |
DN150 |
DN150 |
DN250 |
DN50 |
6 |
GWY601 |
DN175 |
DN200 |
DN300 |
DN65 |
7 |
GWY601 |
DN225 |
DN250 |
DN80 |
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8 |
GWY601 |
DN250 |
DN300 |
DN100 |
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9 |
GWY601 |
DN350 |
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10 |
GWY601 |
DN400 |
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11 |
GWY601 |
DN500 |
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12 |
GWY601 |
DN600 |
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13 |
GWY601 |
DN700 |
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14 |
GWY601 |
DN800 |
Multiple Nozzle Technology |
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Brief |
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Principle |
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No |
Part Name |
No |
Part Name |
No |
Part Name |
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1 |
Adjust Nut |
5 |
Nozzle Body |
9 |
Nut |
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2 |
Spring |
6 |
Nozzle Shaft |
10 |
Bolt |
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3 |
Nozzle Hole |
7 |
Nozzle Holder |
11 |
Counter Flange |
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4 |
Swirl-Chamber |
8 |
Gasket |
12 |
Flange |
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Features |
Multiple Nozzle Technology |
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Nozzle Testing Device The company has an adjustable multiple nozzle test device. After the nozzle is polished and assembled, each nozzle will be carried out opening and atomizing testing before installing into desuperheater. The device is composed of water spray frame, air storage tank, pressure gauge, control device, etc. it can test multi specification and multi series nozzles with different flow rate, so as to ensure that each set of nozzle has undergone strict atomization opening test before leaving the factory, and ensure the excellent atomization effect and reliability of the nozzle. |
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The conventional opening value is 0.1 ± 0.01Mpa |
Over (30%~50%) of opening pressure |
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The spray water enters the swirl chamber with high velocity, gives an excellent spray pattern to optimizes the cooling liquid particle size and atomize water into a very fine mist so that quick evaporation can take place. |
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