Mechanical seal solution
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The pump’s mechanical seal water pipe is used to cool the contact surfaces of the rotating and stationary rings; if this water pipe is not used, the temperature rises too high, which may cause the mechanical seal to deform due to the high temperature. Prone to internal leakage, external leakage? I’m a bit confused now; I don’t know what the moving and stationary rings are, and what part does the mechanical seal serve to seal?
A mechanical seal is a shaft sealing device for rotating machinery. Since the drive shaft passes through both the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment, through which the medium inside the equipment can leak out. If the pressure inside the equipment is lower than atmospheric pressure, air will leak into the equipment; therefore, a shaft sealing device is necessary to prevent such leakage.
The mechanical seal has five sealing points: the shaft and the shaft sleeve, the shaft sleeve and the rotating ring, the rotating ring and the stationary ring, the stationary ring and the stationary ring seat, as well as the gland and the cover
By internal leakage, you mean leakage at the sealing surface of the double-end face mechanical seal that is in contact with the medium. This cannot be detected from the sealing area itself; it requires observation through an external flushing system. Specifically, one can study double-end face sealing solutions such as *plan52, 53A, and 53B. Generally, in a single-face mechanical seal, once there is a leak, it can be seen from the outside, so internal leakage is not possible.
By observing the structure of the mechanical seal and then looking at the structure of the seal gland, it is possible to understand the role of cooling water
This post was last edited by Invincible Beauty on 2017-7-31 at 13:28. High temperatures in the machine seal can cause the O-ring to age and lead to leaks. If cooling water is not used, it will cause dry friction between the rotating and stationary rings, leading to internal leakage. If your mechanical seal is a single-face seal, there will be external leakage
Whether it’s an internal leak or an external leak depends on which side has higher pressure