Rubber double-sealing structure for underwater motor cable

Abstract

The invention provides a rubber double-sealing structure for an underwater motor cable, which comprises a motor end plate with a round groove and a guide pipe wall plate with a round through hole, wherein the motor end plate and the guide pipe wall plate are tightly matched; the groove center of the motor end plate is provided with a round cable passing hole; a vulcanized boss extends from the groove cutting end of the motor end plate and a first watertight cavity is formed with the groove of the motor end plate; a vulcanized end cover extends from the hole opening place of the guide pipe wall plate; the end cover has an L-shaped cross section; the vulcanized end cover, the round hole in the guide pipe wall plate and the motor end plate form a second watertight cavity; an enhanced boss fixed on the back surface of the motor end plate for isolating sea water is embedded in the second watertight cavity; inner thread is processed in the first watertight cavity and the second watertight cavity along the axial direction; and inner thread and outer thread are processed on the inner surface and the outer surface of the enhanced boss respectively along the axial direction.

Description

Technical field [0001] The invention belongs to the technical field of cable sealing, and particularly relates to a rubber double sealing structure for underwater motor cables. Background technique [0002] In recent years, a novel propulsion method has become more and more widely used in the civil field-wheel rim propulsion. The so-called rim propulsion refers to a propulsion device that integrates a motor and a propeller. The rim propulsion device cancels the traditional propulsion shafting and moves the propulsion motor from the cabin to the exterior, which not only saves the cabin space, but also eliminates the coupling vibration of the propeller shaft system in the traditional propulsion method. In the specifications of US patents US-0126297 and US-5220231, this kind of integrated propeller propulsion device is described in detail. Since the rim propulsion motor is installed on the base of the duct in an embedded manner, and seawater seeps in the mating surface of the moto...

AI Technical Summary

Problems solved by technology

[0003] Traditional submersible motor cable seals are usually sealed by metal connectors or sleeves formed by multi-stage compression nuts and expansion rings. The disadvantage of these two sealing methods is that the size of the connector or sleeve is too large to adapt to the wheel. The installation environment of the edge propulsion motor cable, and the above two watertight connectors are rigid connectors, which will have an adverse effect on the vibration and noise reduction of the edge motor

Images