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Target type fiber grating liquid flowmeter

A technology of liquid flowmeter and optical fiber grating, which is applied in the direction of volume/mass flow generated by mechanical effects and dynamic effects of fluid flow through detection, and can solve problems affecting measurement accuracy, poor sealing, and easy leakage, and improve measurement High precision, reduced corrosion, excellent sealing effect

Inactive Publication Date: 2010-01-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the existing electric sensor of the flowmeter, which are easy to leak due to the lack of tight seal, and then cause danger and affect the measurement accuracy, etc., the present invention provides a flowmeter with a shaft sealing diaphragm and adopts an optical fiber grating as the sensor

Method used

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  • Target type fiber grating liquid flowmeter
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Embodiment Construction

[0013] Specific implementation plan

[0014] The present invention will be further described below in conjunction with the drawings, but the content of the present invention is not limited to this.

[0015] The target type fiber grating liquid flow meter provided by the present invention includes a housing 5, the housing 5 is a hollow housing 5 with an upper part closed and a lower part open, the top of the housing 5 is provided with a through hole 8, and the housing 5 is provided with an end device The connecting rod 3 of the choke target 1, the connecting rod 3 is set as a vertical rod, and the connecting rod 3 is fixed in the housing 5 through the shaft sealing sheet 12, and the lower end of the connecting rod 3 is connected with the choke target 1 through the pressure transmission rod 2. The upper end of the rod 3 is fixed to the lower end of the vertical cantilever 10 by a horizontal short rod 6. The upper end of the vertical cantilever 10 is fixed on the top of the housing 5,...

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Abstract

The invention provides a target type fiber grating liquid flowmeter comprising a shell and a connecting bar, wherein the connecting bar is arranged in the shell, and a flow blocking target is arranged at the end of the connecting bar. The target type fiber grating liquid flowmeter is characterized in that a fiber grating is arranged at the other end of the connecting bar, and the connecting bar is fixed in the shell through a shaft seal sheet. Because the fiber grating has high sensitivity and good insulation performance and anti-interference performance, the target type fiber grating liquid flowmeter can safely measure the flow capacity of inflammable and explosive dangerous liquid in oil delivery pipes, chemical liquid delivery pipes and the like. In addition, since the shaft seal sheet is used for sealing, the sealing effect is more excellent, and the corrosion of the liquid to each element inside the flowmeter is greatly reduced, thereby improving the measurement accuracy. The target type fiber grating liquid flowmeter is really an ideal liquid flowmeter.

Description

Technical field [0001] The invention relates to a liquid flow meter, in particular to a target type fiber grating liquid flow meter, which belongs to the technical field of optoelectronic measurement. technical background [0002] In modern industrial production or transportation, it is often necessary to monitor the liquid flow rate in order to determine the liquid production or transportation data. At present, the commonly used target flowmeter is to generate pressure on the target plate when the liquid flows through the target plate, so that the target plate drives the target rod to produce a small displacement, the displacement is measured by the electric sensor and the displacement is converted into an electrical signal and input to the analysis equipment Perform calculations, and finally get the flow rate value. However, due to the poor sealing and fragile structure of the electrical sensor, it is prone to leakage and other phenomena. Therefore, ordinary target flowmeters ...

Claims

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Application Information

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IPC IPC(8): G01F1/28
Inventor 李川赵聪许江淳
Owner KUNMING UNIV OF SCI & TECH
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