The series of bellows seals are high-performance sealing elements designed to meet the sealing needs of high and low temperatures, high-risk media, and complex operating conditions. Utilizing a unique metal bellows structure combined with advanced sealing technology, it effectively prevents media leakage, ensuring stable equipment operation and safety. These seals are widely used in various rotating equipment such as high-temperature oil pumps and other similar rotating machinery, providing a reliable sealing solution for industrial production.
Design Features
Rotating Bellows Design: The metal bellows, as the core component, possesses excellent flexibility and elasticity. During equipment operation, it automatically adjusts with the rotation and displacement of the shaft, maintaining good contact with the shaft at all times, achieving a reliable sealing effect, effectively compensating for shaft eccentricity and vibration, and reducing the risk of seal failure.
Container-Type Design: The overall container-type structure enhances the stability and pressure resistance of the seal. This design allows the seal to withstand high pressure fluctuations, ensuring good sealing performance even under conditions of frequent pressure changes.
Non-compensated annular limiting device on the medium side: A non-compensated annular limiting device is installed on the medium side to adapt to pressure fluctuations and prevent excessive displacement or deformation of the sealing ring under high pressure, ensuring the stability and reliability of the seal.
Flexible front and rear installation configuration: It offers front and rear installation configurations, which can be selected according to specific equipment structures and installation requirements, improving the applicability and ease of installation of the sealing ring.
Pump-efficiency annular design for the medium side seal: The sealing structure on the medium side adopts a pump-efficiency annular design, which effectively improves sealing performance and prevents medium leakage. At the same time, this design also reduces friction between the sealing ring and the shaft, reducing energy consumption and wear.
Self-circulating flushing and buffer design: Equipped with a self-circulating flushing and buffer system, it can automatically flush and cool the sealing cavity, removing heat and impurities generated on the sealing surface and extending the service life of the sealing ring. Simultaneously, the buffer also helps to balance pressure and reduce vibration, further improving the stability of the seal.
Flexible graphite auxiliary seal: Flexible graphite is used as the auxiliary sealing material, which has good high-temperature resistance, corrosion resistance, and sealing performance. It effectively fills tiny gaps in the sealing surface, enhancing the sealing effect under harsh conditions such as high temperature, high pressure, and corrosive media.
A special transmission structure with self-circulating isolation fluid: The special transmission structure design, combined with the self-circulating isolation fluid, ensures stable transmission of the sealing ring under high-speed rotation and complex operating conditions. Simultaneously, the isolation fluid prevents direct contact between the medium and the sealing element, reducing erosion and wear on the sealing ring.
Operating Parameters
Temperature Range: -40℃ to 400℃ (depending on the selected material), adaptable to a wide range of temperature environments from low to high temperatures, meeting the needs of different industrial production.
Pressure Range: 0 – 3.0MPa, capable of withstanding certain pressures, suitable for sealing scenarios under various pressure conditions.
Speed: 3600 rpm or 25 m/s, meeting the sealing requirements of high-speed rotating equipment and ensuring stable sealing performance under high-speed operation.
Flushing Options: Provides multiple flushing options such as Options 23 + 52, which can be selected according to specific media characteristics and operating conditions to ensure the sealing ring operates in the optimal working environment.
Operating Procedures: Adhering to API 682 standards, the product quality and performance meet industry standards, ensuring high reliability and safety.
Application Scope
High-Temperature Oil Pumps: Widely used in various high-temperature oil pumps, such as refining pumps and hot oil transfer pumps in the petrochemical industry. It effectively seals high-temperature oils, prevents leakage, and ensures production safety and environmental cleanliness.
Other Rotating Equipment: In addition to high-temperature oil pumps, it is also suitable for other types of rotating equipment, such as centrifugal pumps, compressors, and agitators, providing reliable sealing support for these devices under complex operating conditions, ensuring normal operation and production efficiency.
The series of bellows seals, with their unique design features, wide operating parameter range, and broad application scope, has become an important product in the industrial sealing field. With the continuous development of industrial technology and the increasing demands for sealing performance, this series of products will continue to innovate and improve, providing even better sealing solutions for industrial production.
