Dry gas seal structure suitable for vibration detection

Abstract

The invention discloses a dry gas seal structure suitable for vibration detection. The dry gas seal structure comprises a shaft sleeve, a movable ring, a fixed ring, a push ring and a spring base. Circular grooves are formed in the fixed ring and the push ring correspondingly and used for stably containing vibration acceleration sensors. Symmetrical through holes are formed in the push ring and the spring base so that sensor signal lines can be guided. By means of the structure, the problem of dry gas seal workpiece vibration detection under the working condition is effectively solved on the basis of not influencing the normal operation of a dry gas seal. The dry gas seal structure has the beneficial effects that the structure is simple, machining is facilitated, and measurement of the vibration situation of axial moving workpieces is achieved under the condition that the normal working condition operation of the axial moving workpieces in the dry gas seal is not influenced.

Description

technical field [0001] The invention belongs to the technical field of dry gas sealing, in particular to a dry gas sealing structure suitable for vibration detection. Background technique [0002] Dry gas seal is a kind of non-contact mechanical seal, which is widely used in industrial production devices such as centrifugal pumps, mixers and compressors. When working, a micron-sized gas film will be formed between the end faces of the moving ring and the static ring. Small changes in thickness can cause dry gas seal failure. [0003] Affected by external conditions, dry gas seal axially moving workpieces will produce certain periodic axial vibrations under working conditions, thereby changing the thickness of the gas film. However, the distance between the dry gas seal workpieces of ordinary design is too tight, and the sensor is difficult to fix firmly , and the signal line is easily involved by the rotating shaft, which makes it difficult to measure the vibration of the d...

AI Technical Summary

Problems solved by technology

[0003] Affected by external conditions, dry gas seal axially moving workpieces will produce certain periodic axial vibrations under working conditions, thereby changing the thickness of the gas film. However, the distance between the dry gas seal workpieces of ordinary design is too tight, and the sensor is difficult to fix firmly , and the signal line is easily involved by the rotating shaft, etc., making it difficult to measure the vibration of the dry gas seal under working conditions

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