Cooling fluid type magnetic fluid sealing device with heat conducting fins being embedded

Abstract

The invention provides a cooling fluid type magnetic fluid sealing device with heat conducting fins being embedded and belongs to the field of sealing of mechanical engineering. The cooling fluid type magnetic fluid sealing device with the heat conducting fins being embedded successively solves the problems that by the adoption of an existing magnetic fluid sealing device, when the linear speed reaches over 20 m / s, magnetic fluid in sealing gaps emits a large amount of heat, the service life is shortened, and even the existing magnetic fluid sealing device is ineffective. The cooling fluid type magnetic fluid sealing device with the heat conducting fins being embedded is composed of a magnetic fluid sealing assembly, the heat conducting fins (16), a cooling system and connectors (25). The heat conducting fins (16) adhere into all toothed grooves through a sealant, the inner circles of the heat conducting fins (16) are flush with corresponding pole teeth, the outer diameter of each heat conducting fin is smaller than the inner diameter of the corresponding tooth groove, and therefore an annular water trough is formed between each heat conducting fin and a corresponding pole shoe. Each water trough is provided with two channels used for circulation of cooling fluid.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] Magnetic liquid seals are used in large-diameter, high-line speed sealing environments, and the magnetic liquid in the sealing gap often fails due to excessive temperature. is a difficult problem. Therefore, it is very important to improve and develop the cooling circulation device of the magnetic liquid sealing, which directly affects the service life of the magnetic liquid sealing device. [0003] The most widely used cooling methods now include the cooling method of processing water cooling grooves in the pole shoe, as described in Reference 1 (Patent Publication No. CN 103574041A); the cooling method of installing a water jacket on the outer circumference of the pole shoe, as described in Reference 1 2 (Patent Publication No. CN 200943707Y); there is a method of installing metal with good thermal conductivity on both sides of the pole piece for coo...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved in the present invention is that when the existing magnetic liquid rotary sealing device works in the environment of large diameter and high linear velocity, due to the large heat generation of the magnetic liquid in the sealing gap, it is easy to shorten the service life of the seal or even fail

Images