An ultrasonic honeycomb sealing device and method

Abstract

The invention discloses an ultrasonic honeycomb sealing device and method. The device comprises a sealing body and a gear bush, wherein the gear bush is sleeved on a rotating shaft to be sealed, and the sealing body is arranged on the outer side of the gear bush without contact; the sealing body comprises a sealing ring, a ring slot is formed in the inner side of the sealing ring, and a matrix ring, a matching layer, an acoustoelectric chip belt and a backing are arranged in the ring slot in sequence in the direction from the rotating shaft to the outside; a plurality of sealing teeth are arranged on the side, opposite to the rotating shaft, of the matrix ring at intervals; and an independent sealing interval is formed between the adjacent sealing teeth, and a honeycomb belt is arranged inthe sealing interval. As a plurality of sealing teeth are arranged, the device can achieve double effects of choked flow and turbulent flow and further has a good sealing effect. By adopting the acoustoelectric chip belt, the device enhances the ultrasonic sealing effect. By adopting the honeycomb belts, the device effectively plays the role of blocking airflow of the honeycomb belts and improvesthe sealing effects. The sealing device has the advantages of simple structure, convenience in assembly and low cost and improves the efficiency of mechanical operation.

Description

technical field [0001] The invention belongs to the technical field of sealing, and relates to an ultrasonic honeycomb sealing device and method. Background technique [0002] The research of dynamic sealing technology is of great significance in the fields of science and technology. With the development of industry, the use environment of construction machinery has undergone profound changes, and higher requirements are put forward for the sealing effect of sealing devices. The traditional labyrinth seal uses the throttling space formed between the sealing teeth and the rotor to dissipate the kinetic energy of the fluid into heat energy to achieve a sealing effect. It has a simple structure and low cost, but the sealing effect is not ideal. Compared with the labyrinth seal, the honeycomb labyrinth has the advantages of small air leakage and high rotor stability, and is widely used in the sealing of rotating machinery. Although the sealing performance of the honeycomb seal ...

AI Technical Summary

Problems solved by technology

Although the sealing performance of the honeycomb seal has been greatly improved, there is still a certain sealing gap, and sometimes the leakage will further increase due to the damage of the sealing gap

In order to improve the sealing characteristics of honeycomb seals, technicians combine honeycombs with comb teeth to enhance the dissipation of gas kinetic energy in the sealing device. However, due to structural reasons, the gap between some honeycombs and the rotor increases, and the sealing effect decreases instead.

Images