Nearly-completely-concentric noncontact carbon ring sealing structure
A carbon ring seal, non-contact technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problems of shaft or sleeve wear, increase rotor vibration, wear, etc., to achieve increased static friction and leakage Small amount of effect
Pending Publication Date: 2020-04-03
上海优赛密封科技有限公司
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Problems solved by technology
When the equipment is started, the shaft or bushing will come into contact with the sealing ring and cause wear. On the one hand, it will affect the service life of the sealing ring, and then affect the service life of the entire carbon ring seal; on the other hand, it will cause wear to the shaft or bushing. In high-speed equipment, the contact force will also increase the vibration of the rotor and affect the stability of the entire rotor
Method used
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Embodiment
[0028] A nearly completely concentric non-contact carbon ring seal structure, such as figure 1 , including a seal ring 4 and a radial elastic element arranged radially outside the seal ring 4, the radial elastic element of this embodiment adopts a spring energy storage ring 3, and the seal ring 4 is horizontally sleeved on the shaft or sleeve to be sealed 6, the radial elastic force generated by the spring energy storage ring 3 is opposite to the gravitational direction of the sealing ring 4, the sealing ring 4 is installed in the chamber, the radial elastic element is constrained by the chamber, and the radial elastic element makes the sealing ring 4 concentric and non-contact The radial elastic force of the radial elastic element can balance the self-gravity of the sealing ring on the one hand, and on the other hand can ensure that the sealing ring does not produce radial displacement when it is disturbed by the outside, so that the sealing ring 4 and the sealing ring The s...
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The invention relates to a nearly-completely-concentric noncontact carbon ring sealing structure. The nearly-completely-concentric noncontact carbon ring sealing structure comprises a sealing ring anda radial elastic element arranged on the radial outer side of the sealing ring, the sealing ring is mounted in a cavity, and the radial elastic element is restrained by the cavity and has radial elastic force to the sealing ring, so that the sealing ring sleeves a to-be-sealed part concentrically in a noncontact mode. Through the radial elastic force of the radial elastic element, on the one hand, the gravity of the sealing ring can be balanced, and on the other hand, it can be ensured that the sealing ring does not generate radial displacement when being disturbed by the outside, so that thesealing ring does not make contact with the to-be-sealed part, the eccentricity ratio is minimum, and the leakage rate is minimum.
Description
technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a nearly completely concentric non-contact carbon ring seal structure. Background technique [0002] Due to its simple structure and stable performance, carbon ring seals are widely used as shaft end seals in various rotating equipment. The main working principle of the carbon ring seal is to rely on the small gap formed by the stationary seal ring and the rotating shaft or sleeve to control the leakage of the sealing medium or process medium within the allowable range. [0003] When the general carbon ring seal is at rest, the seal ring will come into contact with the shaft or sleeve due to its own gravity. When the equipment is started, the shaft or bushing will come into contact with the sealing ring and cause wear. On the one hand, it will affect the service life of the sealing ring, and then affect the service life of the entire carbon ring seal; on the other hand,...
Claims
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IPC IPC(8): F16J15/16
CPCF16J15/16
Inventor 肖沛沛杨惠霞
Owner 上海优赛密封科技有限公司