Method and structure for packaging probes of differential pressure sensor

A differential pressure sensor, sensor probe technology, applied in instruments, measuring devices, measuring fluid pressure, etc., can solve the problems of unreliable performance, large volume and mass, complex sensor structure, etc., and achieve the effect of avoiding freezing

Active Publication Date: 2014-02-05
贵州智能加数字科技有限公司
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Problems solved by technology

[0008] In order to solve the problems of complex sensor structure, unreliable performance, high processing cost and large volume quality, it is proposed to adopt such a differential pressure sensing method and its sensor. The main point of this sensing method is that it is used to measure The detection fluid (such as hydraulic oil) that generates pressure from the measured object is used for sensing, so that the pressure generated by the detection fluid impacts one side of an elastic diaphragm to deform the elastic diaphragm; the other si...

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  • Method and structure for packaging probes of differential pressure sensor
  • Method and structure for packaging probes of differential pressure sensor
  • Method and structure for packaging probes of differential pressure sensor

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[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0049] look first figure 1 , figure 1 The structural principle of the differential pressure sensor probe of the present invention is shown. As can be seen from the figure, the differential pressure sensor has two probes, namely probe one 11 and probe two 12. The structures of the two probes are exactly the same. In the probe housing 112 An elastic diaphragm 113 is arranged near the middle of the probe, and the elastic diaphragm 113 divides the interior of the probe housing 112 into two parts, one side is a detection cavity 111 and the other side is a fixing hole. The detection cavity 111 can allow the detection fluid to flow in, and the fixing hole can allow the optical fiber bundle 4 to be inserted. The optical fiber bundle 4 is processed into a bundle by 1 incident optical fiber 42 and 10 receiving optical fibers 41 (combined Figure 5 Th...

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Abstract

The invention discloses a method and structure for packaging probes of a differential pressure sensor. The structure is characterized in that a gasket (86) is arranged on the periphery of a detection fluid inlet of a detection cavity (111), a filter screen (84) is arranged on the detection fluid inlet, a check ring (85) is arranged between an elastic membrane (113) and the detection cavity (111) to be used for shielding the elastic membrane (113), and an end cover (81) in a fixing hole is utilized to extrude and fix the elastic membrane (113) in the direction from the outside to the check ring (85); a thread sleeve (82) is arranged in the end cover (81) to fix optical fibers inside. The mode can guarantee machining precision and assembling precision, structures of the machined probes can be the same, therefore, realization of standardization, serialization and universalization is facilitated, and detection errors brought by the structural errors can be well avoided. The packaging structure can well fix fiber optics bundles.

Description

technical field [0001] The invention relates to a packaging method and structure of a differential pressure sensor probe, belonging to the field of sensor probe packaging. Background technique [0002] Differential Pressure Sensor DPS (Differential Pressure Sensor) is a sensor used to measure the difference between two pressures, usually used to measure the pressure difference between the front and back ends of a device or component. In recent years, differential pressure sensors have been widely used in many high-precision measurement occasions such as micro-flow measurement, leak testing, clean room monitoring, environmental tightness testing, gas flow measurement, and liquid level measurement. [0003] At present, the research on differential pressure sensors at home and abroad mainly focuses on the traditional piezoresistive differential pressure sensors and capacitive differential pressure sensors. The piezoresistive differential pressure sensor has a simple structure ...

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Application Information

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IPC IPC(8): G01L13/00
Inventor 胡浩钟丽琼周潜张大斌曹阳
Owner 贵州智能加数字科技有限公司
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