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Self-balance floating sealing device

A floating sealing and self-balancing technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of poor sealing performance and achieve the effect of ensuring reliability

Inactive Publication Date: 2016-03-16
中国船舶重工集团公司第七〇五研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortage of poor sealing performance of existing sealing devices, the present invention provides a self-balancing floating sealing device

Method used

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Embodiment Construction

[0011] refer to figure 1 . The self-balancing floating sealing device of the present invention includes a rotating shaft 1 , a sealing ring 2 , an outer O-ring 3 , an inner O-ring 4 , a housing 5 , hydraulic oil 6 , copper pads 7 and screws 8 . There are two sealing rings 2, the outer O-ring 3 is located in the inner groove of the sealing ring 2, the inner O-ring 4 is located in the outer groove of the sealing ring 2, and the two sealing rings 2 are set on the rotating shaft 1 Between the casing 5 and the casing 5, the sealing ring 2 can move along the axis of the rotating shaft 1, and a sealing cavity is formed between the two sealing rings 2, the casing 5 and the rotating shaft 1, and the sealing cavity and the oil injection hole on the casing 5 Connected, the oil injection hole is sealed by the copper pad 7 and the screw 8, and the hydraulic oil 6 is injected into the sealed cavity through the oil injection hole on the housing 5, and the volume of the sealed cavity is cha...

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Abstract

The invention discloses a self-balance floating sealing device for solving the technical problem of weak sealing performance of a traditional sealing device. The self-balance floating sealing device comprises a rotating shaft, sealing rings, outer O-shaped rings, inner O-shaped rings, a shell, hydraulic oil, a red copper pad and a screw. The number of the sealing rings is two; the outer O-shaped rings are positioned in inner clamping grooves of the sealing rings; the inner O-shaped rings are positioned in outer clamping grooves of the sealing rings; the two sealing rings are arranged between the rotating shaft and the shell in a sleeving manner; the sealing rings can move along the axis of the rotating shaft; a sealing cavity is defined by the two sealing rings, the shell and the rotating shaft, and is communicated with an oil injecting hole in the shell; the oil injecting hole is sealed by the red copper pad and the screw; and the hydraulic oil is injected in the sealing cavity through the oil injecting hole in the shell. Along with the pressure change, the volume of the sealing cavity is changed through the translation of the sealing rings to form self-balance with external water pressure, so that the pressure difference of the two sides of the outer O-shaped rings and the inner O-shaped rings is eliminated, and the sealing reliability is guaranteed.

Description

technical field [0001] The invention relates to a sealing device, in particular to a self-balancing floating sealing device. Background technique [0002] The self-balancing floating sealing device is an important sealing element for remote control of the rotating output shaft on the vector propulsion device of the underwater robot. The vector propulsion device receives the control signal from the robot body, and the driving motor adjusts the attitude and thrust of the propeller relative to the robot body in real time. Thereby changing the thrust direction of the propeller to realize the purpose of vector propulsion. The reliability of the sealing device determines the underwater movement performance and equipment safety of the underwater robot. Therefore, the sealing device is required to have good reliability in variable depth applications. Since the equipment operates in real time for a long time, it must also have good wear resistance. At present, most self-balancing se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3268
Inventor 杨贺然赵雄辉孙铁绳刘巍范辉
Owner 中国船舶重工集团公司第七〇五研究所
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