A deep-sea air pressure compensation magnetic rotary encoder

Abstract

The invention discloses a deep-sea air pressure compensation magnetic rotary encoder, which relates to the field of rotary encoders. The high-pressure air tank of the encoder is connected watertightly with the casing, the output shaft is arranged on the casing, and the circuit board is arranged on the casing. In the sealed cavity of the body, the watertight connector is arranged on the housing and connected to the cable on the circuit board. The first electromagnetic overflow valve communicates with the high-pressure air tank and the sealed cavity of the housing, and the second electromagnetic overflow valve communicates with the sealed cavity of the housing. The sealed cavity of the housing and the external environment of the housing, the first pressure sensor is installed outside the housing, the second pressure sensor is installed in the sealed cavity of the housing and connected to the circuit board, the encoder passes the pressure sensor and the electromagnetic The overflow valve realizes air pressure compensation, which avoids the problem of hydraulic oil leakage in oil compensation on the basis of meeting the needs of deep sea use; at the same time, the coordinated design of static seal and pneumatic seal can also effectively prevent seawater and sediment from entering the encoder , Improve the reliability of the encoder.

Description

technical field [0001] The invention relates to the field of rotary encoders, in particular to an air pressure compensation magnetic rotary encoder for deep sea. Background technique [0002] Rotary encoders are divided into photoelectric rotary encoders and magnetic rotary encoders. Photoelectric rotary encoders are easily affected by oil and dust and are not suitable for deep sea underwater applications; magnetic rotary encoders have a relatively simple structure and can adapt to harsh environments. , so magnetic rotary encoders are suitable for deep sea underwater applications. [0003] Although there are waterproof magnetic rotary encoders for magnetic rotary encoders used on land today, they are only suitable for use in shallow water areas, and their size and weight are relatively large. However, in the deep sea, due to the high pressure of the deep sea water and the complex environment, the magnetic rotary encoders used on land are obviously not suitable for deep sea ...

AI Technical Summary

Problems solved by technology

However, in the deep sea, due to the high pressure of the deep sea water and the complex environment, the magnetic rotary encoder used on land is obviously not suitable for deep sea applications.

[0004] If the oil compensation method is used, although it can be used in deep sea, it is easy to cause hydraulic oil leakage during use, which will eventually cause pollution to the water environment.

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