CN103994082A - Centrifugal pump inner non-steady flow visualization experiment device - Google Patents
Centrifugal pump inner non-steady flow visualization experiment device Download PDFInfo
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- CN103994082A CN103994082A CN201410220423.4A CN201410220423A CN103994082A CN 103994082 A CN103994082 A CN 103994082A CN 201410220423 A CN201410220423 A CN 201410220423A CN 103994082 A CN103994082 A CN 103994082A
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- centrifugal pump
- pressure air
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Abstract
The invention relates to a centrifugal pump inner non-steady flow visualization experiment device which comprises a centrifugal pump, a high-pressure air replenishment device, a PhotronFASTCAMPCI high-speed camera, a light source emitter and a test bed computer. A shell body of the centrifugal pump is a transparent shell body. The high-pressure air replenishment device is connected with a shell body of a zone to be tested of the centrifugal pump through a high-pressure air pipe. The PhotronFASTCAMPCI high-speed camera is right opposite to the centrifugal pump zone to be tested. The light source emitter is arranged on the periphery of the centrifugal pump and is used for providing a light source for the PhotronFASTCAMPCI high-speed camera. The PhotronFASTCAMPCI high-speed camera is connected with the test bed computer. The device is simple in structure, the shortcoming that a commonly-used flow field visualization experiment cannot be carried out on a test bed is overcome, and compared with particle image velocimetry (PIV), cost is greatly lowered.
Description
Technical field
The invention provides the inner UNSTEADY FLOW visual measuring device of a kind of centrifugal pump, belong to the relevant technical field of the inner transient state unsteady flow of centrifugal pump.
Background technique
Centrifugal pump is important energy conversion device and conveying equipment for fluid substances, and it is not only applied in the industrial or agricultural fields such as oil, chemical industry, water conservancy, and is the key equipment of the high-tech sectors such as aviation, naval vessel, submarine.Centrifugal pump is in running, and its inside transport medium can inevitably produce various unsteady flows, and derivative vibration, and noise problem, affects stability and the Security of centrifugal pump operation, affects again service life of a machine.Centrifugal pump is the key equipment of multiple fields Important Project, therefore improve as much as possible its unsteady flow and can improve pump assembly reliability of operation, and can reduce the incidence rate of major accident, thereby ensure personal safety, avoid national property to suffer a loss, there is important social effect and economic implications.Therefore, in order to study the inner unsteady flow of centrifugal pump, effectively control unsteady flow, thereby the overall performance that improves centrifugal pump and corollary system is very important; Meanwhile, be the indispensable important research means of this field experimental research to centrifugal pump inside unsteady flow visualization measurement technology.
Through retrieval, at present the unsteady flow visualization measurement relevant patent of declaring in centrifugal pump inside is had to two kinds: a kind of centrifugal pump for deep well PIV interior flow field measuring device (201310211294.8), the water lubriucated bearing that this invention is settled by two ends, left and right supports whole pump shaft, the inducer of pump and outlet section are placed respectively a minute surface with center hole the interior flow field image of impeller and blower inlet casing are reflected, thereby take necessary CCD camera and laser provides enough spaces of laying for PIV; The another kind of centrifugal pump (201010520430.8) of measuring for three-dimensional PIV, this invention is the spiral case of square structure, adopt plexiglass cast inblock to form, its objective is and be convenient to homemade target disc to be put into and in centrifugal pump, to carry out three-dimensional scaling, to improve its stated accuracy, outside pump, can regulate the position of target disc, be convenient to the demarcation of different section in impeller.At present in these patents, be all and realize unsteady flow visualization measurement in pump with PIV, its cost higher (as expensive in trace particle, required laboratory apparatus cost is too high), and to Laboratory Furniture have relatively high expectations (can only carry out on enclosed Laboratory Furniture).
Therefore design is a kind of economical and practical, can be not only very necessary in enclosed but also the experimental setup that can realize the visualization measurement of the inner UNSTEADY FLOW phenomenon of centrifugal pump on open type test stand.
Summary of the invention
The object of the invention is to propose a kind of cheap, applicable territory wide, can effectively carry out again the visual experimental apparatus of visualization measurement simultaneously to centrifugal pump.
The technological scheme that the present invention takes is: the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump, comprise centrifugal pump, high-pressure air adding device, Photron FASTCAM PCI high-speed camera, light source emitter and test stand computer, the housing of described centrifugal pump is transparent shell, described high-pressure air adding device is connected with the housing in centrifugal pump region to be measured by high-pressure air tube, described Photron FASTCAM PCI high-speed camera is just to centrifugal pump region to be measured, described light source emitter is arranged in the surrounding of described centrifugal pump, be used for providing light source for described Photron FASTCAM PCI high-speed camera, described Photron FASTCAM PCI high-speed camera is connected with described test stand computer.
In such scheme, described high-pressure air adding device is made up of high-pressure air tank tank, high-pressure air supplying tube reduction valve, high-pressure air output tube and flexible pipe plastics pagoda joint, described high-pressure air tank tank, described high-pressure air supplying tube, described reduction valve, described high-pressure air output tube and described flexible pipe plastics pagoda joint are connected successively, and described flexible pipe plastics pagoda joint output terminal is connected with described high-pressure air tube.
In such scheme, described high-pressure air tube is metal high voltage air duct, and described high-pressure air tube output terminal is connected with threaded connector, and described threaded connector is connected on the housing at position that centrifugal pump need to carry out spike.
In such scheme, the diameter of described high-pressure air tube is 0.5mm, and the diameter of described threaded connector is 3mm.
In such scheme, described light source emitter is 1000W Halogen tungsten lamp.
In such scheme, described Photron FASTCAM PCI high-speed camera and described 1000W Halogen tungsten lamp are all provided with adjustable tripod.
The invention has the advantages that: (1) designs a set of pressurized gas supplier, trace particle using high pressure bubble as centrifugal pump inside unsteady flow, apparatus structure is simple, is convenient to realize, and has made up the deficiency that conventional flow-field visualized experiment can not be carried out on open type Laboratory Furniture.(2) due to using air as trace particle, better visual, can adopt high-speed camera and general light source can realize the shooting in astable flow field, compared to PIV(particle image velocimetry), its cost reduces greatly.
Brief description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is high-pressure air pipe structural representation.
Fig. 3 is that the present invention uses phase diagram.
In figure: 1 centrifugal pump, 2 high-pressure air tubes, 3 flexible pipe plastics pagoda joints, 4 high-pressure air output tubes, 5 reduction valve, 6 high-pressure air supplying tubes, 7 high-pressure air tank tanks, 8 threaded connectors, 9 Photron FASTCAM PCI high-speed cameras, 10 light source emitters, 11 test stand computers.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is elaborated.
As shown in Figure 1, the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump, comprise centrifugal pump 1, high-pressure air adding device, Photron FASTCAM PCI high-speed camera 9 and some light source emitters 10, preferably, shown in light source emitter 10 can adopt the Halogen tungsten lamp of 1000W, described Photron FASTCAM PCI high-speed camera 9 and described 1000W Halogen tungsten lamp are all provided with adjustable tripod.The housing of described centrifugal pump 1 is transparent shell, described high-pressure air adding device is connected with the housing in centrifugal pump 1 region to be measured by high-pressure air tube 2, described Photron FASTCAM PCI high-speed camera 9 is just to centrifugal pump 1 region to be measured, described light source emitter 10 is arranged in the surrounding of described centrifugal pump 1, and being used for provides light source for described Photron FASTCAM PCI high-speed camera 9.
Preferably, described high-pressure air adding device can select high-pressure air tank tank 7, high-pressure air supplying tube 6 reduction valve 5, high-pressure air output tube 4 and flexible pipe plastics pagoda joint 3 to form, described high-pressure air tank tank 7, described high-pressure air supplying tube 6, described reduction valve 5, described high-pressure air output tube 4 and described flexible pipe plastics pagoda joint 3 are connected in turn, and described flexible pipe plastics pagoda joint 3 output terminals are connected with described high-pressure air tube 2.Preferably, described high-pressure air tube 2 is metal high voltage air duct, and described high-pressure air tube 2 output terminals are provided with threaded connector 8, and described threaded connector 8 is connected on the housing at position that centrifugal pump need to carry out spike.Preferably, described high-pressure air tube 2 diameters are 0.5mm, and the diameter of described threaded connector is 3mm.
When use, pressurized gas inject reduction valve 5 by high-pressure air supplying tube 4 from high-pressure air tank tank 7, and the force value of the pressurized gas by reduction valve 5 regulation outputs, with quantity and the pressure of control inputs Tracer gas.On reduction valve 5, is also furnished with pressure meter, so that read the force value of institute's output high-pressure gas.The pressurized gas that flow out from reduction valve 5 inject high-pressure air output tube 4 joining with it, and are connected by flexible pipe plastics pagoda joint 3 and the high-pressure air tube 2 of implanting centrifugal pump inside.When High Speed Photography, the region that will take is aimed at and focused on to tripod mobile, the fixing high-speed camera of adjusting, and frame number while taking by the Photron_FASTCAM_Viewer software control Photron FASTCAM PCI high-speed camera in test stand computer, time, resolution etc., by movement regulate Halogen tungsten lamp with tripod reach the object of shooting area being carried out to reasonable light filling.According to actual needs, thus the pressure by regulating reduction valve 5 to reach to regulate the Tracer gas in pump is to adapt under different operating modes the fluid of different pressures in pump.
Claims (6)
1. the inner unsteady flow visual experimental apparatus of centrifugal pump, it is characterized in that, comprise centrifugal pump (1), high-pressure air adding device, Photron FASTCAM PCI high-speed camera (9), light source emitter (10) and test stand computer (11), the housing of described centrifugal pump (1) is transparent shell, described high-pressure air adding device joins by high-pressure air tube (2) and the housing in centrifugal pump (1) region to be measured, described Photron FASTCAM PCI high-speed camera (9) is just to centrifugal pump (1) region to be measured, described light source emitter (10) is arranged in the housing surrounding of described centrifugal pump (1), be used for providing light source for described Photron FASTCAM PCI high-speed camera (9), described Photron FASTCAM PCI high-speed camera (9) is connected with described test stand computer (11).
2. the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump according to claim 1, it is characterized in that, described high-pressure air adding device is by high-pressure air tank tank (7), high-pressure air supplying tube (6) reduction valve (5), high-pressure air output tube (4) and flexible pipe plastics pagoda joint (3) form, described high-pressure air tank tank (7), described high-pressure air supplying tube (6), described reduction valve (5), described high-pressure air output tube (4) is connected successively with described flexible pipe plastics pagoda joint (3), described flexible pipe plastics pagoda joint (3) output terminal is connected with described high-pressure air tube (2).
3. the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump according to claim 2, it is characterized in that,, described high-pressure air tube (2) output terminal is connected with threaded connector (8), and described threaded connector (8) is connected on the housing at position that centrifugal pump need to carry out spike.
4. the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump according to claim 3, is characterized in that, the diameter of described high-pressure air tube (2) is 0.5mm, and the diameter of described threaded connector (8) is 3mm.
5. the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump according to claim 4, is characterized in that, described light source emitter is 1000W Halogen tungsten lamp.
6. the inner unsteady flow visual experimental apparatus of a kind of centrifugal pump according to claim 5, is characterized in that, described Photron FASTCAM PCI high-speed camera (9) and described 1000W Halogen tungsten lamp are all provided with adjustable tripod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410220423.4A CN103994082B (en) | 2014-05-23 | 2014-05-23 | The internal unsteady flow visual experimental apparatus of a kind of centrifugal pump |
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| CN201410220423.4A CN103994082B (en) | 2014-05-23 | 2014-05-23 | The internal unsteady flow visual experimental apparatus of a kind of centrifugal pump |
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| CN103994082A true CN103994082A (en) | 2014-08-20 |
| CN103994082B CN103994082B (en) | 2016-08-24 |
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Cited By (3)
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| CN105114337A (en) * | 2015-09-11 | 2015-12-02 | 江苏大学 | Device and method for synchronous accurate measurement of transient flow field of vane pump |
| CN106151020A (en) * | 2016-08-16 | 2016-11-23 | 常州市合达油泵有限公司 | Transparent oil pump |
| CN108757505A (en) * | 2018-07-10 | 2018-11-06 | 哈尔滨工程大学 | A kind of centrifugal pump flow field-pressure fluctuation coupling measurement experimental system |
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2014
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114337A (en) * | 2015-09-11 | 2015-12-02 | 江苏大学 | Device and method for synchronous accurate measurement of transient flow field of vane pump |
| CN106151020A (en) * | 2016-08-16 | 2016-11-23 | 常州市合达油泵有限公司 | Transparent oil pump |
| CN108757505A (en) * | 2018-07-10 | 2018-11-06 | 哈尔滨工程大学 | A kind of centrifugal pump flow field-pressure fluctuation coupling measurement experimental system |
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| Publication number | Publication date |
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| CN103994082B (en) | 2016-08-24 |
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Inventor after: Pei Ji Inventor after: Yang Jun Inventor after: Yuan Shouqi Inventor after: Deng Xin Inventor before: Yang Jun Inventor before: Pei Ji Inventor before: Yuan Shouqi Inventor before: Deng Xin |
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Granted publication date: 20160824 |