Pneumatic pressure reducing desuperheater
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- Supplier: Hangzhou Worldwides Valve Co. Ltd.
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Product Overview
Description
Product Description
Pressure Reducing Desuperehater System Overview: |
Pressure reducing desuperheater system (PRDS), it is the system involves simultaneous reduction in steam pressure and temperature. The severe service steam pressure reducing valve reduces the high pressure steam, while the desuperheater reduces the overall temperature of the steam. The desuperheater and pressure reducing valve can be a combined unit or separate devices.
In 1970, Hangzhou Worldwides Valve introduced its first mechanical desuperheater in China, and in 1976 the venturi desuperheater was developed and successfully marketed to satisfy a wide range of applications. During the development, we have full line of desuperheaters includes classical venturi design, double venturi, multiple spring nozzle and annular venturi desuperheater for selection. All desuperheaters are custom built for each specific application, ensuring trouble-free service and lead to numerous variations and larger capacities for critical power plant needs.
Basic Design: |
| Desuperheater System | |
| 1. Pressure Reducing Valve |
| 2. Multiple Nozzle | |
| 3. Venturi Pipe | |
| 4. Safety Valve | |
| 5. Pressure Gauge | |
| 6. Thermometer | |
| 7. Check Valve | |
| 8. Feed Water Control Valve | |
| 9. Throttle Valve | |
| 10. Strainer | |
| 11. Globe Valve | |
| Assemble Parts | Basic Parameters | ||
*Pressure Reducing System
Pressure Reducing Valve Orifice Plate
*Desuperheater System
Classical Venturi design Double Venturi Design Multiple Nozzle With Venturi Design Annular Nozzle with Venturi Design
*Feed Water System
Feed water control Valve Globe Valve Throttle Valve Strainer Check Valve
*Safety System
Safety Valve
*Insturment System
Pressure Gauge Thermometer Pressure Transmitter Thermocouple
*Others Parts
Connection Pipe Counter Flange and Fastens
| Available inlet pressure: P1<14.0 MPa
Available inlet temperature: T1<570 DegreeC
Available Inlet flow rate: 10%~100%
Noise Level: <85 dbA | ||
| Design | |||
| Pressure Class | Custom-design, acc to specifications | ||
| Size | Outlet from DN200 to DN700 (8" to 28") Additional sizes on request | ||
Design Temperature | Maximal. 570 DegreeC Higher temperature on request | ||
| Actuator | Electric Pneumatic Other actuators on request | ||
Installation | Horizontal | ||
| Connection | Flange (ASME B16.5) Butt weld (Acc to customer's request) | ||
| Material | |||
| Valves | SA 105 SA 182 F11 SA 182 F22 12Cr1MoV | ||
| Applications | Pipes | SA-106B SA-355 P11 15CrMo 12Cr1MoV | |
Power plant requirements for desuperheated steam supplying units having limited operating temperatures.
| Additional Materials on request | ||
| Standard | |||
Control steam temperature and pressure to dryers in paper industry and sugar mills industry
| NB/T47033-2013 Manufacturing acc. to ASME IBR, CE certificated on request | ||
Reduction and control of superheated steam, where excess temperatures will harm the product
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Pressure Reducing Desuperehater System Assemble Part: |
| PART-1 Pressure Reducing Valve | |
| The pressure reduction is achieved by high performance pressure reducing valve with unique design, the valve employs many advanced technology and procession method, designed of forged body, pressure-sealed bonnet, multihole cage guided, pilot plug structure and highly grade material selection, all benefits provides excellent stability and smoothly pressure reduction under high pressure and temperature service.
CLICK HERE TO KNOW MORE ABOUT PRESSURE REDUCING VALVE |
PART-2 Venturi Desuperheater | |
OPERATION PRINCIPLE The desuperheaters reduce steam temperatures by introducing cooling water directly into the hot steam. Temperature reduction is essentially a matter of heat transfer, where the cooling water is placed in direct contact with steam and receives the necessary heat for evaporation. | |
VENTURI CONCEPT 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. |  |
MULTIPLE NOZZLE DESIGN HZVALVE has incorporated the latest technology in the multiple spray nozzle design. The high quality spring loaded nozzle was employed and assembled with desuperheaters to atomize the water droplets and produce the heat transfer contact area necessary for cooling the steam so that to bring steam and water to meld together with very high contacting efficiency. |  |
SPECIAL SPRAY EFFECT The spray water enters the nozzle chamber through multiple tangentially drilled holes, thereby causing water to swirl within the nozzle chamber. The spring, which is pre-compressed to a certain set pressure, keeps the nozzle plug pressed against the seat. As soon as the pressure differential between the water & steam exceeds the set pressure, the plug lifts from its seat and the spray water exits through the small circumferential opening, in the form of a fine mist. Number of nozzles, spring range and spring set pressure is selected based on the process specifications.
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| PART-3 Feed Water Control Valve | |
 | Feed water control valve is one of the most important control components of the feed water line, it controls the supply of feed water to the nozzles, the commonsense is the high performance of feed water control valve with accurate flow and pressure controlling is the priority concern for the operation of desuperheater. According to different working conditions and construction investment, we give full types that covers multi-stage type, cage guide type and labyrinth type and more.
CLICK HERE TO KNOW MORE ABOUT CONTROL VALVE |
CLICK BELLOW TO FIND MORE TYPES |
Quality Control
| Desuperheater Manufacturing Facilities | ||
HZVALVE owns and operates over 40,000 sq mtrs of factory space of manufacturing facilities supported for complete
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Company follows ISO 9001 standard and carry out our quality control proceudres, from material to finish products, each setp is under strictly quality control, Our target is to cover all vital point including material, procession, assembling, testing and package for overall quality controlling and supervision. We keep the understanding that the high quality products create more value to customers. |
Delivery Photo
The pressure reducing desuperheater system produced by Hangzhou Worldwides Valve Co., Ltd have been exported over 50 countries. At the same time, as the top desuperheater manufacture, we also take part in many most critical project domestic. |
Packaging & Shipping
We carry out strictly procedure for desuperheater packing, loading and delivery for both inland and oversea, to ensure the safety and trouble free delivery to destination. |
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Company Information
FAQ
| Q: Why us? |
A: We are top professional desuperheater manufacture in China, reasons: *We are the Chinese first desuperheater designer with over 40 years history, since 1970, we developed Chinese first venturi desuperheater system, during the development, now we have 6 generation desuperheater systems whcih fit for most applications including critical temperature and pressure conditions. *We are the original and only editor for first desuperheater industrial standard in China, the standard regulated and standardized the designing and manufacturing of PRDS in China. *We are the nominated manufcture for offering the pressure reducing desuperheater system to top military application for Chinese first aircraft carrier warship. * With more than 30 combined years of fluids-mixing experience, the design team from HZVALVE has applied technology to a technical base of over twenty thousands installations worldwide.
To date, we are continuously developing new technologies to steam controlling challenges, offered with custom-design and solutions for each specific application, ensuring trouble-free service and lead to numerous variations and larger capacities for critical power plant needs. |
| Q: How is your company? |
A: Our company was established in 1958, was National owned company background before. Since established, we keep as top leader in studying and manufacturing kinds of desuperheater system which fit for critical working conditions. To the date, we are providing market-leading products, services and solutions, for the most challenging applications throughout oil and gas, power, mining, chemical, food and beverage and construction industries. |
| Q: How many empolyee your have and how many value for each year? |
A: Company now has nearly 300 employees, more than 100 various professional and technical personnel, and 6 of them have senior title and over 40 with middle level title. Our annual output value reaches thirty million US dollars and 40% export all around world.
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| Q: What technical support we can get? |
A: With different working condition from different customer's requested, we will offer custom design for each request whcih help our customer's operations running safely, minimize downtime and enhance lifecycle performance but also in minimal investment cost.
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Q: Want to know more about quality control? |
A: HZVALVE owned independent quality department with over 25 experienced inspectors. Our target is to cover all vital point including material, procession, assembling, testing and package for overall quality controlling and supervision. We keep the understanding that the high quality products create more value to customers. |
| Q: What's the certificate of company? |
A: As the leader desuperehater and valves manufacture, we owned with ISO9001, CE, API and many other else certificate, contact us now for review all certificate we have. |
Q: What esle production range you have? |
A: Besides esuperheater system, we also provide with kinds of valves includes safety valve, control valves, high pressure power plant valves, preheater valves and other general valves. We are keeping offering overall support to our customer. |
Contact Information
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