1. Introduction
The sealing ring is widely used in various mechanical equipment, and its main role is to prevent fluid leakage and the intrusion of external pollutants. In engineering practice, many equipment need to start, stop or change the operating speed frequently, such as automobile engines, hydraulic systems and wind turbines. This frequent acceleration and deceleration condition will have a significant impact on the performance of the seal ring, accelerate its failure process, and then affect the normal operation of the equipment.
2. The effect of frequent acceleration and deceleration on the sealing ring
Frequent acceleration and deceleration will have many effects on the sealing ring, mainly including the following aspects:
2.1 Aggravated wear: Frequent acceleration and deceleration will cause the relative motion speed between the sealing ring and the matching surface to change constantly, which will aggravate friction and wear. Especially at the moment of starting and stopping, due to inertia, the sealing ring will withstand greater friction, resulting in increased wear.
2.2 Accelerated aging: Frequent acceleration and deceleration will cause the operating temperature of the sealing ring to fluctuate greatly, accelerating the aging process of rubber materials. The high temperature will promote the break and cross-linking of the rubber molecular chain, resulting in hardening, cracking of the seal ring, and eventually the loss of elasticity.
2.3 Fatigue cracks: Frequent acceleration and deceleration will make the sealing ring withstand alternating stress, which is easy to produce fatigue cracks in the stress concentration part. With the expansion of cracks, the sealing ring will eventually break and fail.
2.4 Affect the sealing performance: frequent acceleration and deceleration will lead to changes in the deformation and stress distribution of the sealing ring, affecting the contact state with the matching surface, resulting in reduced sealing performance and leakage.
3. Coping strategies
In order to reduce the impact of frequent acceleration and deceleration on the sealing ring and extend its service life, the following measures can be taken:
3.1 Optimization of sealing materials: Select sealing materials with excellent wear resistance, aging resistance and fatigue resistance, such as fluorine rubber, silicone rubber, etc.
3.2 Improve the seal structure design: optimize the cross section shape and size of the seal ring, improve its stress distribution state, and improve its fatigue resistance.
3.3 Control of working temperature: Take effective cooling measures to control the working temperature of the sealing ring and slow down its aging process.
3.4 Strengthen lubrication: Maintain good lubrication between the sealing ring and the matching surface to reduce friction and wear.
3.5 Regular inspection and maintenance: Check the use of the seal ring regularly, and replace the aging or damaged seal ring in time.
4. Conclusion
Frequent acceleration and deceleration will significantly affect the performance of the seal ring and accelerate its failure process. By optimizing materials, improving design, controlling temperature, strengthening lubrication and regular maintenance, we can effectively reduce the impact of frequent acceleration and deceleration on the seal ring, extend its service life, and ensure the reliable operation of the equipment.
Step 5 Look ahead
In the future, with the continuous development of new materials, new processes and new technologies, the wear resistance, aging resistance and fatigue resistance of the sealing ring will be further improved, and it can better adapt to the needs of harsh conditions such as frequent acceleration and deceleration. At the same time, intelligent sealing technology will also be widely used to achieve real-time monitoring and early warning of sealing status, and further improve the reliability and safety of equipment.