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Pressure sensor probe structure

A pressure sensor and sensor technology, applied in the field of sensor probes, can solve the problems of large detection error, unstable work, damage to sensitive components, etc., and achieve the effects of avoiding errors, easy assembly, maintenance and replacement, and simple probe structure.

Inactive Publication Date: 2015-02-18
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a pressure sensor probe structure to solve the problem that the probe structure in the existing pressure sensor is not a sealed s

Method used

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  • Pressure sensor probe structure
  • Pressure sensor probe structure

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Embodiment

[0018] refer to figure 1 and figure 2 , this embodiment provides a pressure sensor probe structure,

[0019] Including: optical fiber bundle 1, sleeve tube 2, sensor housing 3, elastic diaphragm 5, positioning piece 6, retaining ring 7, filter screen 9 and fluid detection chamber 10,

[0020] The elastic diaphragm 5 is made of low-alloy ultra-high-strength steel 35CrMnSiA, the sensor housing 3 is a straight cylindrical structure, and the inside of the sensor housing 3 is a hole structure 4 that runs through both ends. The hole structure 4 includes a first hole 41 and a The second hole 42, the first hole 41 communicates with the end face of the second hole 42 and the two are coaxial, the diameter of the first hole 41 is greater than the diameter of the second hole 42 where the first hole 41 communicates with the second hole 42, said The diameter of the elastic diaphragm 5 and the outer diameter of the retaining ring are all greater than the diameter of the second hole 42 at ...

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Abstract

The invention provides a pressure sensor probe structure, and belongs to the field of gas-liquid pressure sensor probes. The pressure sensor probe structure comprises a sensor shell, a fiber optics bundle, an elastic membrane and a positioning piece. The interior of the sensor shell is of a hole structure with the two ends communicated. The elastic membrane is fixed into the hole structure in a sealing mode. The two ends of the hole structure are sealed and partitioned through the elastic membrane. One end of the fiber optics bundle is fixedly arranged on one side of the elastic membrane inside the hole structure through the positioning piece, the fiber optics bundle is coaxial with the hole structure, a sealing structure is formed between the fiber optics bundle and the positioning piece, a sealing structure is formed between the positioning piece and the sensor shell, and the fiber optics bundle is perpendicular to the elastic membrane. The problems that a probe structure of an existing pressure sensor is not of a sealing structure, a probe is prone to being affected by the outside during working, working is not stable, the detecting error is large, and meanwhile sensitive elements in the probe are prone to damage are solved.

Description

technical field [0001] The invention relates to a sensor probe, in particular to a sensor probe structure for measuring liquid or gas pressure. Background technique [0002] A pressure sensor is a sensor that measures liquid or gas pressure. It is widely used in many fields and is an essential component in monitoring and control. It can not only measure pressure, but also indirectly measure flow, flow rate, etc. There are a variety of pressure sensors with different technical principles on the market now, and the common ones are resistive, capacitive, and piezoelectric. With the development of optical communication technology, fiber optic sensor has gradually become a hot spot in related fields. Because of its high sensitivity, small size, good electrical insulation, strong anti-electromagnetic interference ability, and easy telemetry, it can be well applied to some special industries. The advantages of environmental protection and harsh environment have been widely recogni...

Claims

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Application Information

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IPC IPC(8): G01L11/02
Inventor 胡浩钟丽琼陈明强
Owner GUIZHOU UNIV
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