CN207600713U - A kind of outlet passage device for flow-field test - Google Patents
A kind of outlet passage device for flow-field test Download PDFInfo
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- CN207600713U CN207600713U CN201721623070.8U CN201721623070U CN207600713U CN 207600713 U CN207600713 U CN 207600713U CN 201721623070 U CN201721623070 U CN 201721623070U CN 207600713 U CN207600713 U CN 207600713U
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- outlet passage
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- water tank
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Abstract
The utility model patent is related to a kind of outlet passage device for flow-field test, including outlet passage, the outlet passage is tubular outlet passage, outlet passage both ends are respectively equipped with outlet passage import, outlet passage outlet, and the diameter of outlet passage outlet is more than the diameter of outlet passage import；The outlet passage outside wall surface of the tubular adds top surface as open, transparent cuboid water tank；The cuboid water tank is made of the acrylic material of high light transmission, and the length of the cuboid water tank is 2 times of outlet passage inlet diameter, and width is identical with outlet passage inlet diameter, highly 1.85 times for outlet passage inlet diameter.Pass through the utility model, in the acrylic cuboid water tank for installing a high light transmission outside outlet passage pipe section additional, and injected clear water, using refractive index similar in acrylic material and water, it can effectively reduce the calibrated error that the light generated due to refractive index difference is distorted and formed.
Description
Technical field
The utility model patent is related to a kind of outlet passage device for flow-field test, is mainly used in outlet passage
The flow-field test in portion to improve its stated accuracy, belongs to hydraulic engineering technical field.
Background technology
PIV（Particle Image Velocimetry）Measuring technology can carry out whole flow field and quickly measure, Er Qieshi
Together in unsteady flow velocity field, flow field survey, there is intuitive, not interference flowing field, in recent years in pump installation inside stream
It is widely used in dynamic research.During three-dimensional PIV experiments, calibration is most important, and precision directly affects PIV surveys
Measure result.At present, PIV is assembled to for the outlet passage of pump installation after testing stand, the system for forming a closing, calibration rotation
Turn of tidal stream field, the sheet laser entered from radial direction irradiation will necessarily generate refraction by cylindrical surface to camera, because of refractive index difference
The light of generation is distorted and forms calibrated error.Obviously, this is that existing pump installation outlet passage interior three-dimensional PIV measures calibration side
The shortcoming of method.To solve the above problems, the utility model patent devises a kind of outlet passage for flow-field test
Device by installing a cuboid water tank and injected clear water additional in outlet passage pipe section, can be effectively reduced due to refractive index not
The calibrated error distorted and formed with the light generated.Device design is simple, versatile, and stated accuracy is high, in pump installation
There is very big application value in the testing research analysis of outlet passage flow field.
Utility model content
The purpose of this utility model is exactly to solve the above problems, three-dimensional to solve existing pump installation outlet passage flow field
PIV measures the problem of scaling method precision is not high, provides a kind of outlet passage device for flow-field test, is going out flow
The acrylic cuboid water tank of a high light transmission, and injected clear water are installed outside road pipe section additional, inside pump installation outlet passage
It the PIV calibration of flowing and measures, overcome thes problems, such as due to the surface boundary of pipe and cause the refraction error of light.
The purpose of this utility model is achieved in that a kind of outlet passage device for flow-field test, feature
It is：Including outlet passage, the outlet passage be tubular outlet passage, outlet passage both ends be respectively equipped with outlet passage into
Mouth, outlet passage outlet, and the diameter of outlet passage outlet is more than the diameter of outlet passage import；The tubular goes out flow
Top surface is added on road as open, transparent cuboid water tank, cuboid water tank is not connected with the outlet passage of tubular；Institute
It states cuboid water tank to be made of the acrylic material of high light transmission, the length of the cuboid water tank is outlet passage inlet diameter
2 times, width is identical with outlet passage inlet diameter, highly 1.85 times for outlet passage inlet diameter.
1.4 times of a diameter of outlet passage inlet diameter of the outlet passage outlet
The utility model is rational in infrastructure simply, it is easy, easy to use to manufacture, and by the utility model, one kind is used for
The outlet passage device of flow-field test, installs transparent cuboid water tank additional in outlet passage pipe section, and water tank uses high light transmission
Acrylic material be made.In attached drawing, we can set outlet passage pipe section inlet diameter as D, outlet passage pipe
The section a diameter of 1.4D of exit portion, the long 2.0D of acrylic water tank, wide 1.0D, a height of 1.85D, the top surface of cuboid water tank is spacious
Mouthful, remaining each face consolidates closing.Injected clear water is needed during test calibration in water tank.
The utility model patent provides a kind of outlet passage device for flow-field test, in outlet passage pipe section
The outer acrylic cuboid water tank for installing a high light transmission additional, and injected clear water, using refractive index similar in acrylic material and water,
The calibrated error that the light generated due to refractive index difference is distorted and formed can effectively be reduced.The utility model design is simple, adds
Work is easy to manufacture and install, and easy to operate, can really reflect outlet passage internal flow situation, carries out laser flow-field test, carries
High stated accuracy has application value in outlet passage flow field test analysis research field.
Description of the drawings
Fig. 1 faces direction structure schematic diagram for the utility model.
Fig. 2 is the side-looking direction structure diagram of the utility model.
Fig. 3 is the overlook direction structure diagram of the utility model.
In figure：1 outlet passage, 2 outlet passage imports, the outlet of 3 outlet passages, 4 cuboid water tanks.
Specific embodiment
The utility model is described in further detail with description of the drawings below in conjunction with the accompanying drawings.
A kind of outlet passage device for flow-field test, including outlet passage 1, outlet passage 1 is discharged for tubular
Runner sets outlet passage import 2, outlet passage outlet 3, and the diameter of outlet passage outlet 3 at 1 both ends of outlet passage respectively
More than the diameter of outlet passage import 2；Top surface is added on the outlet passage 1 of tubular as open, transparent cuboid
Water tank 4, cuboid water tank 4 and the outlet passage 1 of tubular do not penetrate through；The cuboid water tank 4 uses the acrylic of high light transmission
Material is made, and the length of cuboid water tank 4 is 2 times of 2 diameter of outlet passage import, width and 2 diameter phase of outlet passage import
Together, 1.85 times highly for 2 diameter of outlet passage import.A diameter of 2 diameter of outlet passage import of outlet passage outlet 3
1.4 again.
Claims (2)
1. a kind of outlet passage device for flow-field test, it is characterized in that：Including outlet passage（1）, the outlet passage
（1）For tubular outlet passage, outlet passage（1）Both ends are respectively equipped with outlet passage import（2）, outlet passage outlet（3）, and
Outlet passage exports（3）Diameter be more than outlet passage import（2）Diameter；The outlet passage of the tubular（1）Outside wall surface
Top surface is provided with as open, transparent cuboid water tank（4）, cuboid water tank（4）With the outlet passage of tubular（1）Do not connect
It is logical；The cuboid water tank（4）It is made of the acrylic material of high light transmission, the cuboid water tank（4）Length for water outlet
Tunnel inlets（2）2 times of diameter, width and outlet passage import（2）Diameter is identical, is highly outlet passage import（2）Diameter
1.85 times.
2. a kind of outlet passage device for flow-field test according to claim 1, it is characterized in that：It is described go out flow
Road exports（3）A diameter of outlet passage import（2）1.4 times of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721623070.8U CN207600713U (en) | 2017-11-29 | 2017-11-29 | A kind of outlet passage device for flow-field test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721623070.8U CN207600713U (en) | 2017-11-29 | 2017-11-29 | A kind of outlet passage device for flow-field test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207600713U true CN207600713U (en) | 2018-07-10 |
Family
ID=62761404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721623070.8U Active CN207600713U (en) | 2017-11-29 | 2017-11-29 | A kind of outlet passage device for flow-field test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207600713U (en) |
-
2017
- 2017-11-29 CN CN201721623070.8U patent/CN207600713U/en active Active
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