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Pressure sensor in deep-sea and use thereof

A pressure sensor and pressure technology, applied in the direction of measuring fluid pressure, piston type fluid pressure measurement, instruments, etc., can solve the problems of large structure size, difficult permeability, complex structure, etc., and achieve the effect of simple structure

Inactive Publication Date: 2006-03-15
HEFEI UNIV OF TECH
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Problems solved by technology

The existing pressure sensor Chinese Patent Publication No. 94112019.8 proposes a pressure sensor that automatically compensates static pressure, but due to the use of a solenoid valve, the structure is more complicated, and the solenoid valve is also difficult to control under water depth
Chinese patent publication 02159057.5 proposes a method and device for measuring water depth pressure, but this invention uses a permeable plate, which makes it difficult to ensure a stable permeability in the complex underwater environment of the ocean. Two sensors are used to make the structural size possible Larger, and the accuracy of the static pressure of the invention also depends on the traditional pressure sensor, so it is difficult to directly improve the accuracy of water depth measurement

Method used

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  • Pressure sensor in deep-sea and use thereof
  • Pressure sensor in deep-sea and use thereof

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Embodiment Construction

[0016] see figure 1 , the deep-sea pressure sensor of this embodiment is aimed at the closed oil chamber 6 of the pressure sensing device 1, and a piston mechanism is provided, which is composed of a pipe body 2 and a piston 3, and the front end of the pipe body 2 is closed by the piston 3 to form a piston chamber 4. In the piston 3 There is an interference fit with the inner wall of the tube body 2, the piston 3 can form an axial movement in the tube body 2 after overcoming the friction force, the piston cavity 4 is communicated with the closed oil cavity 6 of the pressure sensing device 1, and is filled with oil liquid.

[0017] In specific implementation, figure 1 The pressure sensing device 1 and the piston mechanism shown in the figure are arranged as separate bodies, and the piston chamber 4 and the closed oil chamber 6 of the pressure sensing device 1 communicate with each other through a pipeline 5 .

[0018] Referring to FIG. 2 , in a specific implementation, the pr...

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Abstract

A pressure transducer used in deep sea is featured as setting piston mechanism for sealed oil cavity of pressure transducer, forming piston mechanism by tube body and piston, forming piston cavity by sealing tube front end with piston and realizing shrink fit between piston and tube body internal wall, enabling piston to move axially in tube when frictional force is overcome by piston, connecting piston cavity through to sealed oil cavity of pressure transducer and filling there full of oil.

Description

Technical field: [0001] The invention relates to ocean measurement and sensing technology, in particular to the measurement of large water pressure and the measurement of small pressure changes in deep sea water. Background technique: [0002] The deep-sea pressure sensor is an important sensor for water depth measurement. The accuracy of the water depth measurement depends on the performance of the pressure sensor. Only a pressure sensor that can measure both the large water pressure and the small water pressure in the deep sea can obtain underwater information. The exact position of the water depth in the deep sea, such as a robot or a submersible. The existing pressure sensor Chinese Patent Publication No. 94112019.8 proposes a pressure sensor that automatically compensates for static pressure. However, due to the use of a solenoid valve, the structure is complicated, and the solenoid valve is difficult to control under water depth. Chinese Patent Publication 02159057.5 ...

Claims

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Application Information

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IPC IPC(8): G01L7/16G01L15/00
Inventor 刘正士王勇葛运建何凯陆益民陈恩伟
Owner HEFEI UNIV OF TECH
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