Airside Seal Oil Pump HSNH80Q2-46NZ: The Unsung Hero Guarding Generator Safety

In thermal power plants, stable generator operation is crucial to ensuring power supply. The generator airside seal oil system, a crucial component, prevents hydrogen leakage and outside air from entering the generator, ensuring safe and efficient operation. The seal oil pump, a core component of this system, fulfills the crucial task of delivering seal oil. This article will introduce a widely used three-screw pump, the HSNH80Q2-46NZ seal oil pump, and explore its core role and advantages in the seal oil system.

The Importance of Seal Oil Pumps

The generator seal oil system’s primary responsibility is to provide stable seal oil pressure, effectively confining hydrogen within the generator while preventing outside air from entering. This precise control is crucial for maintaining a pure internal generator environment. The HSNH80Q2-46NZ seal oil pump plays a crucial role in this process. It not only needs to provide a continuous and stable oil supply but also be able to withstand pressure fluctuations under various operating conditions to ensure system reliability.

Among many pump types, three-screw pumps, due to their unique structural design and operating principle, are an ideal choice for seal oil systems. The HSNH80Q2-46NZ seal oil pump, in particular, has been widely used in numerous power plants for its outstanding performance.

Working Principle of the HSNH80Q2-46NZ

As a three-screw pump, the HSNH80Q2-46NZ seal oil pump utilizes three intermeshing screws to transfer liquid. One active screw is driven by a motor, while the other two driven screws rotate synchronously with the active screw. As the screws rotate, seal oil is drawn into the pump body and propelled forward through the spiral space, ultimately reaching the outlet. The precise fit between the screws and the design of the flow path ensure that the pump has very high volumetric efficiency and low pulsation.

The advantage of this design is that it achieves efficient energy transfer without disrupting the continuity of the oil flow, thus ensuring smooth delivery of the seal oil. Furthermore, the low pulsation characteristic reduces impact on the piping system, extending the service life of the entire seal oil system.

The Core Role of the Sealing Oil Pump

The HSNH80Q2-46NZ seal oil pump plays an irreplaceable role in the generator’s sealing oil system. First, it is the heart of the system, responsible for supplying essential sealing oil to the sealing pads at both ends of the generator. Second, the sealing oil pump must automatically adjust its output flow rate based on pressure fluctuations within the generator, ensuring an appropriate oil pressure differential at all times—neither too high nor too low. This not only improves generator operating efficiency but also effectively prevents accidents caused by abnormal oil pressure.

Furthermore, the HSNH80Q2-46NZ sealing oil pump features excellent adaptability, ensuring it operates properly under varying load conditions. For example, during startup or when the load suddenly increases, the sealing oil pump must be able to quickly respond and adjust its output to meet increased demand. Furthermore, during light load or shutdown conditions, it should reduce power consumption to minimize unnecessary energy waste.

Advantages of the HSNH80Q2-46NZ

Compared to other types of sealed oil pumps, the HSNH80Q2-46NZ three-screw pump offers numerous advantages:

• Efficient and Energy-Saving: Thanks to its unique structural design, this sealed oil pump consumes very little energy during operation, significantly reducing power plant operating costs.
• Smooth Operation: Thanks to its three-screw structure, the HSNH80Q2-46NZ produces minimal vibration and noise during operation, improving the working environment and minimizing impact on surrounding equipment.
• Easy Maintenance: The pump is designed with routine maintenance in mind, with key components easily accessible for removal and replacement, significantly reducing repair time.
• Adaptable: The HSNH80Q2-46NZ maintains stable operation in both high and low temperature environments, adapting to diverse operating conditions.

In thermal power plants, sealed oil pumps are essential for ensuring the safe operation of generators. The HSNH80Q2-46NZ three-screw sealed oil pump, with its unique operating principle and excellent performance, has become the preferred choice of many power plants. Through careful maintenance and management of the sealing oil system, the reliability and economy of the generator can be effectively improved, providing a solid guarantee for the smooth progress of power production.

When looking for high-quality, reliable oil filters, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including steam turbine accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:
E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229

Yoyik offers various types of power plants spare parts for steam turbines, generators, boilers as below:
Electric Stop Valve J961H-400Lb 25
Butterfly Type Buffer Check Valve H47X-10C
Vacuum Gate Valve Dkz40H-64
Stop Valve J65Y-500
Ac Motor Pump Yb225M-8B3
Check Valve H41H-16C
Valve D661-4043
Stop Valve J41Y-63V
Gas Valve For Accumulator Nxq1-L40/31.5/H-Cqf
Check Valve H44H-40
Vlv,Solenoid 4We6D6X/Eg110N9K4/V (Rexrtoh)
Electric Vacuum Gate Valve Dkz941H-25
Solenoid Valve D3W009Cnjw42
Oil Vacuum Pump P-1825
Packing Valve Spindle 442-152739-8-A36
Superheater Plug Valve Sd61H-P54160V Zg15Cr1Mo1V
Electric Gate Valve Z962Y-P55160V
Stop Valve J41W-40P
Electric Stop Valve J961Y-63
Hydraulic Accumulator Nxq1-L25/33 H
Pump Cbt-F416-Af*9
Throttle Valve L61W-2200Lb
Manual Ball Valve Q11F-10P Dn20
Stop Check Valve Kljc25-1.6P
Spring Full Lift Safety Valve A42Y-16C
Electric Gate Valve Z961H-25 Wcb
Stop Valve J61Y-P5545V 12Cr1Mov
Check Valve H41W-64P
Block Valve Sd61H-P55150V
Hydrulic Steel/Sleave Ball Valve Khm-22L 111402