Dynamometry-type optical fiber flowmeter
An optical fiber flow and force measurement technology, which is used in the detection of fluid flow by measuring differential pressure, volume/mass flow generated by mechanical effects, etc. , simplify the structure and process, reduce the effect of additional effects
Inactive Publication Date: 2013-02-27
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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[0009] In view of this, the main purpose of the present invention is to provide a force-measuring optical fiber flowmeter to solve the problems that the flowmeter affects the flow and flow field of the original pipeline, the optical fiber is affected by other additional effects, and the structure and structure of the flowmeter are simplified. craft
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0027] Please refer to Figure 1-Figure 3 , figure 1 A schematic diagram of the force-measuring fiber optic flowmeter provided by the present invention; figure 2 A schematic diagram of the force-measuring diaphragm of the force-measuring optical fiber flowmeter provided by the present invention; image 3 A schematic diagram of the fixed beam of the load-measuring optical fiber flowmeter provided by the present invention.
[0028] The force-measuring fiber optic flowmeter comprises: a casing 10 for fixing the force-measuring fiber optic flowmeter to the pipeline to be measured; a measuring tube 20 installed on the outside of the side wall of the casing 10 and both ends of which are sealed and communicated with the insid...
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The invention discloses a dynamometry-type optical fiber flowmeter which comprises a shell (10) used for fixedly connecting a dynamometry-type optical fiber flowmeter with a tested pipeline, a measuring pipe (20), a dynamometry film (30), a fixing beam (50) and a fiber bragg grating (40), wherein the measuring pipe (20) is arranged outside the side wall of the shell (10), and two ends of the measuring pipe (20) are hermetically communicated with the interior of the shell (10); the dynamometry film (30) is arranged in the measuring pipe (20) and deforms under the action of liquid pressure; the fixing beam (50) is arranged in the measuring pipe (20), is used for fixing the fiber bragg grating (40) and is arranged at one side, facing the fluid flow direction, of the dynamometry film (30); and the fiber bragg grating (40) is fixed between the fixing beam (50) and the dynamometry film (30) and used for measuring forces generated by fluid flow. By utilizing the dynamometry-type optical fiber flowmeter, the problems that a flowmeter influences the flow and flow field of an original pipeline and an optical fiber is influenced by other additional effects are solved, and the structure and process of the flowmeter are simplified.
Description
technical field [0001] The invention relates to the technical field of flow testing, in particular to a force-measuring optical fiber flowmeter, which is suitable for measuring the flow of fluid. Background technique [0002] In many fields of industrial production and people's life, it is necessary to monitor the flow of fluid. 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, and the displacement is measured by the electric sensor and converted into an electrical signal input analysis equipment Calculate and finally get the flow value. However, electronic sensors have problems such as poor sealing, easy leakage, easy corrosion, and electromagnetic interference. [0003] Optical fiber sensors use optical fibers for sensing and transmission, and do not have the above-mentioned problems, so they have receive...
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IPC IPC(8): G01F1/36
Inventor 张文涛李芳
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI