Deep-sea micro-motor with micro-gap rotary dynamic seal and balanced internal and external cavity pressure

Abstract

The invention discloses a deep-sea micro-motor adopting micro-clearance rotary motive sealing and having pressure-balanced inner and outer chambers. The micro-motor comprises a micro-clearance rotary motive sealing component, a motor body, internally-filled insulating pressure oil, a grease type dustproof rotary motive sealing component, a bellow type inner and outer chamber pressure balancing component, a pressure-resisting socket and a rear end cover, wherein the micro-clearance rotary motive sealing component is assembled on an output shaft of the motor; motive sealing is realized by tension, generated in micro clearances, of the insulating pressure oil; the grease type dustproof rotary motive sealing component is inserted into the motor output shaft of the micro-clearance rotary motive sealing component and fixedly screwed in an inner circular locating seam allowance in the front end of the motor; the below type inner and outer chamber pressure balancing component is connected with the rear end of the motor body; screw type inner and outer chamber micro pressure difference regulation is adopted. The micro-motor disclosed by the invention has the advantages of improving the high efficiency of the motor running under an ultrahigh pressure in deep sea and realizing normal work by resisting huge ultrahigh pressure below thousands of meters in deep sea.

Description

technical field [0001] The invention relates to a deep-sea micro-motor, in particular to a deep-sea micro-motor which adopts a micro-gap rotary dynamic seal and balances the inner and outer cavity pressures and works on the deep seabed thousands of meters away. Background technique [0002] The structures of deep-sea micro-motors currently on the market are as follows: figure 1 As shown, most of them work on the seabed with a depth of hundreds of meters to thousands of meters. market such as figure 1 The deep-sea micromotor shown includes a mechanical labyrinth dust-proof mechanism 1, a lip-shaped rubber rotary dynamic sealing mechanism 2, an O-shaped rubber ring 3, a motor body 4, insulating pressure oil 5, an O-shaped rubber ring 6, a piston bracket 7, a moving Dustproof rubber ring 8, inner and outer chamber pressure difference adjustment spring 9 and rear end cover 10. Since the working pressure of the deep-sea micro-motor increases with the deepening of the submerged...

AI Technical Summary

Problems solved by technology

The pressure difference adjustment mechanism can adjust the pressure difference accurately and conveniently, but the long part of the pull rod exposed from the casing is extremely inconvenient for the handling and use of the motor, and it is often damaged due to collision with other objects, and sometimes the pull rod is broken Or the impacted rod directly pierces the rubber bag and causes the motor to fail

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