Experimental device for fine mechanical flow field measurement for fluid

An experimental device and fluid machinery technology, which is applied in the field of experimental devices for fine measurement of fluid machinery flow field, can solve the problems of difficult torsional flow field measurement, complicated component replacement, and difficult fluid storage, so as to maintain consistent thermophysical properties and calculate precise effect

Inactive Publication Date: 2015-03-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the deficiencies of the existing testing technology in the fine measurement of fluid machinery, such as the difficulty of fluid storage, the complexity of component replacement, and more importantly, the difficulty of measuring the twisted flow field in complex fluid machinery, and then provide A device that can be used for fluid machinery, especially hydraulic machinery internal flow refinement measurement closed cycle measurement channel, can realize flow adjustment, steady flow adjustment, cavitation degree adjustment, positive and negative adjustment, automatic tracer particle addition, fluid recovery Comprehensive functionality for preservation and measurement of complex internal flow fields

Method used

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  • Experimental device for fine mechanical flow field measurement for fluid
  • Experimental device for fine mechanical flow field measurement for fluid
  • Experimental device for fine mechanical flow field measurement for fluid

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specific Embodiment approach 1

[0021] Specific implementation mode 1: Combination figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 To explain this embodiment, the experimental device for the fine measurement of the flow field of fluid machinery in this embodiment includes a tail water tank 1, a water pump group 2, a flow monitoring device, a steady flow flange 6, a fluid storage system 8, and a model to be measured. Device 9, expansion joint 10, flow field fine test system 11, tracer particle addition mechanism 12 and dynamometer 14, tail water tank 1, water pump group 2, flow monitoring device, steady flow flange grid 6, expansion joint 10 It is connected with the model device 9 to be measured to form a closed loop detection channel in sequence. The tracer particle adding mechanism 12 is installed between the water pump group 2 and the flow monitoring device, the fluid storage system 8 is connected with the flow monitoring device, and the flow field is refined test system. 11 is arrange...

specific Embodiment approach 2

[0033] Specific implementation manner two: combination figure 1 To describe this embodiment, the fluid storage system 8 and the model device 9 to be measured in this embodiment are both transparent model devices to be measured made of organic glass. With this arrangement, the outer surfaces of all parts of the model device 9 to be measured are designed to be hexahedral or have parallel surfaces, and the outer surfaces of the parts are polished and kept smooth. Avoid air bubbles on the joint surface. The other composition and connection relationship are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Specific implementation mode three: combination figure 1 To describe this embodiment, the flow field refinement test system 11 of this embodiment is a particle image velocimetry, a laser Doppler velocimetry, or a laser induced fluorescence. With this setting, the whole system can realize the comprehensive functions of flow adjustment, damping adjustment, steady flow adjustment, cavitation degree adjustment, forward and reverse adjustment, automatic addition of tracer particles, fluid recovery and flow field measurement. Other components and connection relationships are the same as those in the first or second embodiment.

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Abstract

The invention discloses an experimental device for fine mechanical flow field measurement for fluid and relates to an experimental device for fluid. The experimental device for the fine mechanical flow field measurement for the fluid solves the problems of difficulty in fluid storage, complexity in component change and difficulty in mechanical distortion flow field measurement for complex fluid of an existing testing system and provides the comprehensive experimental device capable of realizing fine measurement. According to the experimental device for the fine mechanical flow field measurement for the fluid, a tail water tank (1), a water pump set (2), a flow rate monitoring device, a steady flow flange grid (6), a telescopic joint (10) and a model device (9) to be measured are connected in sequence to form a closed circulating detection passage, a trace particle adding mechanism (12) is arranged between the water pump set (2) and the flow rate monitoring device, the fluid storage system (8) is connected with the flow rate monitoring device, a fine flow field testing system (11) is arranged at the lateral surface of the model device (9) to be measured, and a dynamometer (14) is co-axially arranged above the model device (9) to be measured. The experimental device for the fine mechanical flow field measurement for the fluid is used for fluid experiment.

Description

Technical field [0001] The invention relates to a fluid experimental device, in particular to an experimental device for fine measurement of the flow field of a fluid machine, belonging to the fine measurement of the internal flow field of a hydraulic machine. Background technique [0002] Experimental testing has unique guiding significance and practical value for the field of fluid machinery and engineering. Experimental measurement technology has always played a vital role in the development of fluid dynamics. All new physical phenomena and most fluid dynamics theories Its mathematical models are all first obtained through experimental measurements. [0003] In the field of fluid mechanics, such as the determination of the high Reynolds number (Re) inertial turbulent flow pattern, the establishment of the boundary layer theory, the derivation of the momentum integral equation of the boundary layer, and the discovery of the elastic turbulence phenomenon under extremely low Re in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 李小斌苏文涛王璐郑智颖李凤臣魏显著赵越
Owner HARBIN INST OF TECH
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