Seal ring with streamline groove end face and mechanical seal device

Abstract

The invention provides a seal ring with a streamline groove end face. The end face is provided with shaped grooves which are arranged evenly and divided by isolation components with the height of the end plane and in the same form. The shaped grooves are grooves with the center lines arranged along the streamline tracks for seal fluid particles flowing inwards from the periphery of the seal ring. The ratio range of the opening arc length, along the periphery of the seal ring, of each of the shaped grooves to the arc length of the same radial direction side of the neighboring isolation component is 0.2-5, and the preferred ratio range is 0.8-1.2. According to the seal ring with the streamline groove end face and the mechanical seal device, on the basis of the existing machining technology, the opening force, rigidity and carrying capacity of an end face fluid film on the seal end face are improved by an extremely large margin; the seal ring with the streamline groove end face and the mechanical seal device have better end face fluid hydrodynamic effect compared with traditional seal end face obviously.

Description

technical field [0001] The invention relates to an end face fluid seal element and an end face seal device with the seal element, in particular to a seal ring with a streamlined groove end face and a mechanical seal device using the seal ring. Background technique [0002] Mechanical sealing devices and technologies are widely used in the application of numerous rotating machinery axial end face seals, such as the shaft end seals of various types of pumps, compressors, expanders, separators, reactors and other rotating machines. The basic structure of the fluid end face non-contact mechanical seal device that has been reported and / or used usually includes a stationary ring (static ring), a rotating ring (moving ring), a static ring seat, a shaft sleeve, a transmission pin, a tolerance Ring, compression sleeve, push ring, spring, anti-rotation pin and other components. The static ring and the moving ring are coaxially arranged opposite to each other, and their opposite end f...

AI Technical Summary

Problems solved by technology

This makes the setting of the groove type unable to actively and well match the characteristics of the fluid film on the end surface, so it is difficult to obtain the best hydrodynamic pressure effect on the end surface, and it is also impossible to obtain greater fluid film stiffness and opening force

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