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Micro flow velocity measuring device, thermal hydraulics experiment table with same and method

A technology of flow velocity measurement and rotational speed measurement, which can be used in measuring devices, fluid velocity measurement, fluid dynamics tests, etc.

Active Publication Date: 2021-03-19
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect that the micro-flow velocity measurement is difficult in the prior art, and provide a micro-flow velocity measurement device and a thermal hydraulics experiment platform and method with the device

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  • Micro flow velocity measuring device, thermal hydraulics experiment table with same and method
  • Micro flow velocity measuring device, thermal hydraulics experiment table with same and method
  • Micro flow velocity measuring device, thermal hydraulics experiment table with same and method

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Embodiment Construction

[0035] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0036] like figure 1 As shown, in a preferred embodiment of the present invention, a micro-flow velocity measurement device is provided, and its main structure includes two parts: a Venturi flow tube and a rotor flow velocity measurement device 8 . Among them, the Venturi flow tube is used to provide an installation site for the rotor flow rate measuring device 8, and at the same time, it can be connected to the pipeline to be measured through the Venturi throat section to amplify the original micro flow rate for accurate measurement. The role of the rotameter flow rate measuring device 8 is similar to that of the traditional rotameter flow meter, which can reflect...

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Abstract

The invention discloses a micro flow velocity measuring device, a thermal hydraulics experiment table with the same and a method, which belong to the field of metering equipment. By arranging a Venturi flow measuring pipe and a rotor flow velocity measuring device, the original micro flow velocity can be amplified through the Venturi throat pipe section, and then the flow velocity in the pipe is reflected through the rotating speed of the rotor flow velocity measuring device. According to the rotor flow velocity measuring device, through a special adjusting air cavity structure, the buoyancy of the rotor flow velocity measuring device can be adjusted by changing the volume of an adjusting air cavity in the flow velocity measuring process, the whole rotor flow velocity measuring device cansuspend in to-be-measured fluid, a second sleeve and a center shaft can relatively rotate in a contactless mode in an ideal state, and friction force is reduced as much as possible. Therefore, the micro flow velocity measuring device can be suitable for measuring the micro flow velocity. In addition, the invention further provides the thermal hydraulics experiment table, natural circulation can beachieved, the internal flow velocity can be accurately adjusted, and the thermal hydraulics experiment table is suitable for tests of the equipment at different flow velocities.

Description

technical field [0001] The invention belongs to the field of measuring equipment, and in particular relates to a flow velocity measuring equipment. Background technique [0002] A flow meter is a device used to measure fluid flow velocity. Generally speaking, flow meters are divided into rotor flow meters, Venturi flow meters, electromagnetic flow meters, and ultrasonic Doppler flow meters. [0003] Among them, the core component of the rotameter is the impeller, which is usually used in high flow rates and rivers. The propeller type flow meter, the rotary cup type flow meter and the rotary vane flow meter are all rotor type flow meters, and their working principle is basically the same. However, such devices are usually not suitable for the measurement of low and medium flow rates due to the large frictional force at the rotating shaft. [0004] In addition, Venturi flowmeters, electromagnetic flowmeters, and ultrasonic Doppler flowmeters are relatively accurate in measur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/07G01P5/14G01M10/00
CPCG01P5/07G01P5/14G01M10/00
Inventor 傅晟威陈少庆陈玉清
Owner NAVAL UNIV OF ENG PLA
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