Barometric compensation magnetic type rotary encoder for deep sea

Abstract

The invention, which relates to the field of rotary encoders, discloses a barometric compensation magnetic type rotary encoder for deep sea. A high-pressure air tank of the encoder is in watertight connection with a shell; an output shaft is arranged on the shell; and a circuit board is arranged in a sealed cavity of the shell. A watertight connector is arranged on the shell and is connected witha cable on the circuit board. A first electromagnetic overflow valve is communicated with the high-pressure air tank and the sealed cavity of the shell; and a second electromagnetic overflow valve iscommunicated with the sealed cavity of the shell and an external environment of the shell. A first pressure sensor is installed outside the shell; and a second pressure sensor is installed in the sealed cavity of the shell and connected with the circuit board. According to the encoder, the barometric compensation is realized by the pressure sensors and the electromagnetic overflow valves; a problem of hydraulic oil leakage existing in oil liquid compensation is solved while the deep sea use requirement is met; and on the basis of cooperative design of the static seal and the pneumatic seal, seawater and silt are prevented from entering the encoder effectively, so that the use reliability of the encoder is improved.

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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