A pressure switching module for calibration of optical fiber pressure sensors

Abstract

The invention discloses a pressure switching module for calibration of optical fiber pressure sensors. The pressure switching module comprises a valve body, a connector, at least two sealing cylinders, at least one pressing block and at least one thread sleeve. The valve body has a liquid flow channel inside; the valve body is provided with at least two half through holes; the first end of each half through hole is communicated with the liquid flow channel; and the second end of the half through hole extends to the surface of the valve body, and is a threaded port. The connector is fixedly arranged at the first end of the liquid flow channel. Each sealing cylinder has a cavity and is a run-through structure. The first end of each sealing cylinder is in threaded connection with the threadedport; and the cavity is communicated with the half through hole through a screw hole. The pressing block has a channel for allowing optical cables to pass; the side walls of the pressing block and the screw sleeve are provided with bar-shaped gaps in the bus direction; and the screw sleeve is in threaded connection with the second end of each sealing cylinder. The pressure switching module has the advantages of compact structure, simple processing and manufacturing and convenient use, can greatly improve calibration efficiency of the optical fiber pressure sensors without affecting the calibration accuracy, and reduce man-hour consumption and labor intensity.

Description

technical field [0001] The invention relates to the technical field of pressure sensor calibration devices, in particular to a pressure transfer module capable of simultaneously calibrating a plurality of optical fiber pressure sensors. Background technique [0002] Pressure sensors are widely used in various technical fields of ocean observation and monitoring. A pressure sensor is a device or device that can sense pressure signals and convert the pressure signals into usable output signals according to certain rules. At present, most commonly used pressure sensors are electronic pressure sensors, which can be divided into piezoresistive pressure sensors, piezoelectric pressure sensors, etc. according to different measurement principles. With the rapid development of optical fiber sensing technology, various optical fiber pressure sensors used in ocean observation and monitoring have emerged as the times require. [0003] The fiber optic pressure sensor is a sensor that c...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a pressure adapter module suitable for simultaneous calibration of multiple optical fiber pressure sensors to solve the problem that the existing pressure sensor calibration adapters cannot meet the needs when calibrating a large number of optical fiber pressure sensors

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