During the operation of the generator, the cooling of the stator is crucial, and the normal operation of the stator cooling water pump, as a key equipment of the cooling system, is directly related to the safety and stability of the generator. As a centrifugal pump, the generator stator cooling water pump needs to be equipped with a reliable and efficient mechanical seal to prevent coolant leakage and ensure the normal operation of the cooling system. Mechanical seal DFB80-80-240H is a mechanical seal product designed specifically for this application scenario, with many unique structural features and significant performance advantages.

1. Structural features of mechanical seal DFB80-80-240H

(I) Sealing chamber structure

The sealing chamber of the mechanical seal DFB80-80-240H is reasonably designed and uses high-quality sealing materials with good sealing performance and corrosion resistance. The sealing chamber is closely matched with the pump shaft, which can effectively prevent the coolant from leaking to the outside during the operation of the pump. At the same time, the sealing chamber also has good heat dissipation performance, which can dissipate the heat generated by the sealing friction in time to avoid seal failure due to excessive temperature.

(II) Stationary ring and dynamic ring assembly

The stationary ring and dynamic ring are key components of mechanical seals. DFB80-80-240H uses high-precision processing technology to manufacture the stationary ring and dynamic ring, ensuring the flatness and roughness accuracy of the two. The material selection of the stationary ring and the dynamic ring is also very sophisticated, with good wear resistance and sealing. During operation, the dynamic ring rotates with the pump shaft, and the stationary ring is fixed in the sealing cavity. A very thin liquid film is formed between the two, which plays a sealing role.

(III) Spring and push ring structure

The mechanical seal adopts a combination of spring and push ring. The spring can provide a stable axial force to ensure a close fit between the stationary ring and the dynamic ring. The push ring evenly transfers the force of the spring to the dynamic ring, so that the dynamic ring can maintain a stable position during rotation. The design of the spring and push ring fully considers the influence of centrifugal force, and can still ensure a good sealing effect under high-speed rotation.

(IV) Sealing surface material and design

The material of the sealing surface directly affects the performance and service life of the mechanical seal. The sealing surface of DFB80-80-240H is made of special silicon carbide or graphite material, which has good wear resistance, corrosion resistance and self-lubrication. The design of the sealing surface adopts an asymmetric corrugated shape, which can effectively disperse the pressure during the operation of the pump, avoid local wear of the sealing surface, and extend the service life of the seal.

(V) Flushing structure design

In order to prevent impurities in the coolant from being deposited on the sealing surface and affecting the sealing effect, DFB80-80-240H is designed with a flushing structure. The flushing structure can regularly flush the sealing surface, remove impurities and impurity deposits, and keep the sealing surface clean. The flow rate and method of the flushing liquid can be adjusted according to actual needs to achieve the best flushing effect.

2. Performance advantages of mechanical seal DFB80-80-240H in generator stator cooling water pump

(I) High sealing performance

In the generator stator cooling water pump, the high sealing performance of the mechanical seal DFB80-80-240H is one of its most significant advantages. Due to the use of precise manufacturing technology and high-quality materials, a stable and reliable liquid film can be formed between the static ring and the dynamic ring, effectively preventing coolant leakage. Even during long-term operation, it can maintain a good sealing effect, ensure the cooling effect of the generator stator, and improve the working reliability of the generator.

(II) Good wear resistance

The generator stator cooling water pump needs to run for a long time, and the mechanical seal will be subject to certain wear. The sealing surface of DFB80-80-240H is made of wear-resistant materials, and the sealing structure is reasonably designed, which can effectively disperse friction and wear and reduce the wear rate of the sealing surface. This makes the mechanical seal have a long service life, reduces the frequency of maintenance and replacement, and reduces operating costs.

(III) Adaptability to high-speed rotation

As a centrifugal pump, the speed of the pump shaft of the generator stator cooling water pump is usually high. The spring and push ring structure of the mechanical seal DFB80-80-240H can adapt to high-speed rotation, ensure uniform pressure between the sealing surfaces, and avoid separation of the sealing surfaces due to centrifugal force. At the same time, the corrugated design and high-quality materials of the sealing surface can also maintain stability during high-speed rotation, ensuring the reliability of the sealing effect.

(IV) Good high temperature and corrosion resistance

The coolant of the generator stator cooling water pump usually has a certain temperature and chemical corrosiveness. The sealing materials and design structures used in the sealing cavity, static ring and dynamic ring of DFB80-80-240H can adapt to the environment of high temperature and corrosive coolant, and prevent the seal from being damaged during long-term use. This enables the mechanical seal to operate stably in the generator stator cooling water pump and reduce the occurrence of leakage failures.

(V) Easy to install and maintain

The structural design of the mechanical seal DFB80-80-240H takes into account the convenience of installation and maintenance. The matching accuracy of its sealing cavity and pump shaft is high, and no excessive adjustment is required during installation. At the same time, the components of the mechanical seal are reasonably designed, easy to disassemble and repair, and can quickly replace worn parts, reduce downtime, and improve production efficiency.

The mechanical seal DFB80-80-240H has unique structural characteristics and significant performance advantages, and has a good application effect in centrifugal pumps such as generator stator cooling water pumps. In practical applications, reasonable selection, correct installation and maintenance of mechanical seal DFB80-80-240H can effectively improve the cooling effect and operating reliability of the generator, and provide a strong guarantee for the stable operation of the power system.

When looking for high-quality, reliable pump mechanial seals, 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