CN208505616U - It is a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter - Google Patents
It is a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter Download PDFInfo
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- CN208505616U CN208505616U CN201821191437.8U CN201821191437U CN208505616U CN 208505616 U CN208505616 U CN 208505616U CN 201821191437 U CN201821191437 U CN 201821191437U CN 208505616 U CN208505616 U CN 208505616U
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Abstract
The utility model discloses a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter, comprising: pedestal, the first cylinder body being installed on the pedestal, the end cap being removably mounted at the top of first cylinder body, first cylinder body is the square tube shape made of transparent material, the bottom of the pedestal is for being connected to testing stand, first cylinder interior offers the first air flue, first cylinder body it is upper, lower surface offers the first air inlet being connected to first air flue and the first gas outlet respectively, the air inlet being connected to first air inlet and for plugging trace particle conduit is offered on the end cap.The auxiliary cylinders set of the utility model has the advantages that the interference that can be avoided refraction error, that accurately and quickly arranges laser light source position and the camera angle of particle image velocimeter.
Description
Technical field
The utility model relates to a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter.
Background technique
Engine air flue testing stand is used to measure the Tumble and swirl of the air intake duct of cylinder, and Tumble and swirl is rolled in combustion chamber
The ratio of the revolving speed of dynamic gaseous mixture slewing rate and engine, numerical value is bigger to illustrate that combustion efficiency is better, and engine power is got over
By force.
Testing Tumble and swirl is all the flow velocity for first testing out gas in cylinder sleeve, then Tumble and swirl can be obtained by calculating.Currently,
The state-of-the-art method for testing gas flow rate in cylinder sleeve is using particle image velocimetry method (Particle Image
Velocimetry, PIV), measure the three-dimensional flow field in a certain section in cylinder sleeve.But since cylinder sleeve is cylinder, laser beam
It will lead to different refractions when across cylinder bore wall, to propose very high requirement, such as phase to particle image velocimeter arrangement
Machine angle, laser light source position etc., so measurement result is made to will appear two errors, i.e. refraction error and placement error；For
If the debugging of particle image velocimeter carries out on cylinder sleeve to be measured, due to there are refraction error, will so that debugging is very difficult,
It is very difficult to find regular test result, to be difficult to be arranged camera angle and laser light source position.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of for debugging in particle image velocimeter
Camera angle and laser light source position auxiliary cylinder sleeve, can quickly arrange the position of laser light source and the angle of camera,
When testing the flow field rate of a certain cross section of cylinder sleeve, the measurement error as brought by placement error can be minimized.
To achieve the goals above, the first aspect of the utility model provides a kind of for debugging particle image velocimeter
Cylinder sleeve is assisted, can be used in laser light source position and the camera angle of fast debugging particle image velocimeter, is missed with reducing arrangement
Difference comprising: pedestal, the first cylinder body being mounted on the base, the end cap being removably mounted at the top of first cylinder body, it is described
First cylinder body is the square tube shape made of transparent material, and the bottom of the pedestal is connected to testing stand, first cylinder interior
The first air flue is offered, the upper and lower surfaces of first cylinder body offer the first air inlet being connected to first air flue respectively
Mouthful and the first gas outlet, offer on the end cap be connected to first air inlet and is used to plug trace particle conduit into
Stomata.
Preferably, first cylinder body is made of acrylic material.
Preferably, the mounting portion for installing trace particle conduit is provided at the top of the end cap.
Preferably, the mounting portion is at least two convex blocks being circumferentially arranged along the air inlet, the convex block
On offer mounting hole.
Preferably, the auxiliary cylinder sleeve further includes the second cylinder body, second cylinder body be installed on the pedestal and
Between first cylinder body, second cylinder interior offers the second air flue, and the upper and lower surfaces of second cylinder body are opened respectively
Equipped with the second air inlet and the second gas outlet being connected to second air flue, second air inlet and first gas outlet
It is connected；Second cylinder body is the square tube shape for the height that height is greater than first cylinder body, and second cylinder body is by transparent
Material is made.
Preferably, the height of second cylinder body is 1.5 times of the height of the first cylinder body.
Preferably, second cylinder body is made of acrylic material.
Preferably, between second cylinder body and the pedestal, first cylinder body and second cylinder body it
Between, be all made of clamping between the end cap and first cylinder body and/or be bolted.
Preferably, between second cylinder body and the pedestal, first cylinder body and second cylinder body it
Between, the connecting end surface between the end cap and first cylinder body be provided with sealing ring.
The utility model provides a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter, sets the first cylinder body to
Square tube shape, since each side wall of the first cylinder body of square tube shape is plane, laser beam will not after the side wall of the first cylinder body
It reflects, cylinder sleeve to be measured refraction error as caused by cylindrical shape can be eliminated, so as to the survey of Fast Calibration particle picture
The laser light source position of fast instrument and the angle of camera, are rapidly and accurately arranged particle image velocimeter, to cylinder to be measured
The three-dimensional flow field of a certain cross section of set carries out analysis of testing the speed, and reduces test result error as brought by placement error.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for assisting cylinder sleeve in the utility model embodiment；
Fig. 2 is the perspective view of the explosion of Fig. 1；
Fig. 3 is the cross-sectional view of Fig. 2.
In figure, 10, pedestal；20, the first cylinder body；21, the first air flue；22, the first air inlet；23, the first gas outlet；30,
End cap；31, air inlet；32, mounting portion；40, the second cylinder body；41, the second air flue；42, the second air inlet；43, the second gas outlet.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "top", "bottom" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.It should be understood that using term in the utility model
" first ", " second " etc. describe various information, but these information should not necessarily be limited by these terms, these terms are only used to will be same
The information of type is distinguished from each other out.For example, " first " information can also be claimed in the case where not departing from the scope of the utility model
Similar for " second " information, " second " information can also be referred to as " first " information.
As shown in Figure 1-Figure 3, the preferred embodiment in the utility model is a kind of for debugging the auxiliary of particle image velocimeter
Cylinder sleeve comprising: pedestal 10, the first cylinder body 20 being installed on pedestal 10 are removably mounted to 20 top of the first cylinder body
End cap 30, the bottom of the pedestal 10 is for being connected to testing stand, and illustratively, the bottom of the pedestal 10 is adopted with testing stand
With flanged joint, the first air flue 21 is offered inside first cylinder body 20, the upper and lower surfaces of first cylinder body 20 are opened respectively
Equipped with the first air inlet 22 and the first gas outlet 23 being connected to first air flue 21, offered on the end cap 30 with it is described
The air inlet 31 of first air inlet 22 connection, the air inlet 31 is for plugging trace particle conduit；First cylinder body 20 is
Square tube shape, and first cylinder body 20 is made of clear material.
Based on the above-mentioned technical proposal, before using the flow field velocity of a certain cross section of particle image velocimeter testing air passage, first
It is adjusted using laser light source and camera angle of the above-mentioned auxiliary cylinder sleeve to equipment, to eliminate measurement brought by placement error
Error, then a certain cross section of the particle image velocimeter after debugging to cylinder sleeve to be measured is subjected to flow field velocity measurement, and to knot
Fruit carries out the amendment of refraction error, can measure the practical flow field speed in cylinder sleeve in air flue；
The step of being debugged using auxiliary cylinder sleeve to particle image velocimeter is specific as follows:
S1: pedestal 10 is installed on testing stand, installs first cylinder body 20 on pedestal 10, and the 20 of first cylinder body
Top is placed with scaling board；
S2: adjusting the position of laser light source, and the piece optical plane for issuing laser light source is mutually be overlapped with the plane of the scaling board
It closes, to complete the calibration to laser light source, that is, determines the position of laser light source, it is suitable for measuring the particle in air inlet section speed
Degree；Since scaling board to be directly equipped on to the upper end of the first cylinder body 20, without using the modes such as suspention that scaling board is protruded into gas
Road is demarcated, and calibration process is enormously simplified；
S3: scaling board is taken away, and the end cap 30 is installed on to the top of first cylinder body 20, and trace particle is led
Pipe is inserted in the air inlet 31；
S4: trace particle and gas are passed through in trace particle conduit, and one end of trace particle conduit is also communicated with flow
Meter, by adjusting the angle of camera to obtain the velocity amplitude for the trace particle that corresponding particle image velocimeter is measured, camera
Each camera site both correspond to the velocity amplitude that a particle image velocimeter is measured；
S5: comparing the measurement result of velocity amplitude and flowmeter that particle image velocimeter is measured, when two values are identical, i.e.,
Complete the calibration to camera angle.
Illustratively, the cross section at the top of the first cylinder body 20 in the present embodiment between 10 bottom surface of pedestal height with to
The cross section to be tested surveyed in cylinder sleeve is equal to the height between its bottom surface.
Since auxiliary cylinder sleeve uses the first cylinder body 20 of square tube shape, cylinder sleeve to be measured is eliminated due to cylindrical brought
Refraction error can quickly and accurately adjust laser light source position and the camera angle of equipment, eliminate the cloth due to equipment as far as possible
Set measurement error brought by error.
Specifically, in order to convenient installation trace particle conduit securely to end cap 30, in the present embodiment, the end cap
30 top is provided with the mounting portion 32 for installing trace particle conduit.
Illustratively, the mounting portion 32 in the present embodiment be circumferentially be arranged along the air inlet 31 it is at least two convex
Block offers mounting hole on the convex block；In practical applications, trace particle conduit usually pass through connector be inserted in end cap into
In stomata 31, being connect connector with convex block using connector can be fixedly mounted in trace particle conduit in end cap 30.
In the present embodiment, first cylinder body 20 is made of acrylic material, can due to having the preferable transparency
Meet shooting demand.
Specifically, in order to each component of firm installation and can easy disassembly, first cylinder body 20 and the pedestal 10 it
Between, be all made of clamping between the end cap 30 and first cylinder body 20 and/or be bolted.Illustratively, the first cylinder body 20
Bottom be arranged in the top of pedestal 10 first to carry out Primary Location, then be bolted to connection；Likewise, the first cylinder body 20
Top and end cap 30 bottom also using clamping and be bolted.Illustratively, in order to be tightly connected, the first cylinder body 20 and bottom
The 10, first cylinder body of seat 20 and the connecting end surface of end cap 30 are provided with sealing ring.
Based on the above-mentioned technical proposal, provided in the present embodiment it is a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter,
It includes sequentially connected pedestal 10, the second cylinder body 40, the first cylinder body 20, end cap 30, and second cylinder body 40 is installed on described
Between pedestal 10 and first cylinder body 20, the second air flue 41, second cylinder body 40 are offered inside second cylinder body 40
Upper and lower surfaces offer the second air inlet 42 being connected to second air flue 41 and the second gas outlet 43 respectively, described
Two air inlets 42 are connected with first gas outlet 23；Second cylinder body 40 is the height that height is greater than first cylinder body 20
The square tube shape of degree, and second cylinder body 40 is made of clear material.
Using above-mentioned auxiliary cylinder sleeve debugging particle image velocimeter, specific step is as follows:
S1: pedestal 10 is installed on testing stand, and first cylinder body 20 is installed on pedestal 10, first cylinder body 20
Top is placed with scaling board；
S2: adjusting the position of laser light source, and the piece optical plane for issuing laser light source is mutually be overlapped with the plane of the scaling board
It closes, to complete the calibration to laser light source；It is outstanding without using since scaling board to be directly equipped on to the upper end of the first cylinder body 20
It the modes such as hangs scaling board is protruded into air flue and demarcate, enormously simplify calibration process；
S3 ': scaling board is taken away, and first dismantles first cylinder body 20 from the pedestal 10, by second cylinder body
40 are installed on the pedestal 10, and first cylinder body 20 is installed on the second cylinder body 40, and the end cap 30 is installed on described
On first cylinder body 20, and trace particle conduit is inserted in the air inlet 31；
S4: being passed through trace particle and gas, and be also communicated with flowmeter in trace particle conduit in trace particle conduit, leads to
The angle of adjustment camera is crossed to obtain the velocity amplitude for the trace particle that corresponding particle image velocimeter is measured, each bat of camera
It acts as regent to set and both corresponds to the velocity amplitude that a particle image velocimeter is measured；
S5: comparing the measurement result of velocity amplitude and flowmeter that particle image velocimeter is measured, when two values are identical, i.e.,
Complete the calibration to camera angle.
The difference of itself and the adjustment method of above-mentioned auxiliary cylinder sleeve is only that, step S3 is replaced with step S3 '；If only
Using the first cylinder body 20 carry out laser light source calibration and camera angle calibration, due to the first cylinder body 20 top cross-sectional with
The height of cross section to be measured in cylinder sleeve to be measured is equal, and the top cross-sectional of the first cylinder body 20 is located at the top sides of the first cylinder body 20
At edge, the shooting effect to it will affect, and use the superposition of the second cylinder body 40 and the first cylinder body 10 design, first directly use the
Scaling board is equipped on 20 top of the first cylinder body, completes the calibration of laser light source, then dismantles the first cylinder body 20 by one cylinder body 20, will
Second cylinder body 40 is installed on pedestal 10, the first cylinder body 20 is installed on the second cylinder body 40, end cap 30 is installed on the first cylinder body 20
On, since the second cylinder body 40 is higher than air flue to be measured, in the angle of calibration for cameras, assist corresponding to cylinder sleeve to be measured in cylinder sleeve
The position of cross section to be measured is located at the centre of the second cylinder body 40, thus not can be appreciated that air flue edge in coverage, ensure that bat
Effect is taken the photograph, the second cylinder body 40 is likewise provided as square tube shape, can eliminate the influence of refraction error bring；In addition, due to the first cylinder
Body 20 and the second cylinder body 40 are detachable, are more convenient cleaning.
Preferably, in the present embodiment, the height of second cylinder body 40 is 1.5 times of the height of the first cylinder body 20, makes to clap
Taking the photograph effect can reach best.
In the present embodiment, second cylinder body 40 is equally made of acrylic material, due to having the preferable transparency
It can satisfy the demand of taking pictures.
In the present embodiment, for the easy to connect of each component and stablize, between second cylinder body 40 and the pedestal 10,
Clamping is all made of between first cylinder body 20 and second cylinder body 40, between the end cap 30 and first cylinder body 20
And/or it is bolted；Illustratively, second cylinder body 40 first passes through clamping Primary Location with pedestal 10 and connect, then carries out spiral shell
It tethers and connects, similarly, the top of first cylinder body 20 and the second cylinder body 40, the end cap 30 are also adopted with first cylinder body 20
It is connected with clamping with bolted mode.
Similarly, in order to be tightly connected each component, between second cylinder body 40 and the pedestal 10, first cylinder
Connecting end surface between body 20 and second cylinder body 40, between the end cap 30 and first cylinder body 20 is provided with sealing
Circle.
To sum up, the utility model embodiment provides a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter, by setting
The first cylinder body 20 of square tube shape is set, can accurately and quickly debug particle picture in the case where avoiding refraction error from interfering
Tachymeter determines the angle of laser light source position and camera.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (9)
1. a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter characterized by comprising pedestal is installed on the bottom
The first cylinder body on seat, the end cap being removably mounted at the top of first cylinder body, first cylinder body are by transparent material system
At square tube shape, the bottom of the pedestal is connected to testing stand, and first cylinder interior offers the first air flue, described first
The upper and lower surfaces of cylinder body offer the first air inlet being connected to first air flue and the first gas outlet, the end cap respectively
On offer and be connected to first air inlet and for plugging the air inlet of trace particle conduit.
2. auxiliary cylinder sleeve as described in claim 1, which is characterized in that first cylinder body is made of acrylic material.
3. auxiliary cylinder sleeve as described in claim 1, which is characterized in that be provided at the top of the end cap for installing tracer grain
The mounting portion of sub- conduit.
4. auxiliary cylinder sleeve as claimed in claim 3, which is characterized in that the mounting portion is circumferentially arranged along the air inlet
At least two convex blocks offer mounting hole on the convex block.
5. such as auxiliary cylinder sleeve of any of claims 1-4, which is characterized in that it further include the second cylinder body, described second
Cylinder body is installed between the pedestal and first cylinder body, and second cylinder interior offers the second air flue, and described second
The upper and lower surfaces of cylinder body offer the second air inlet being connected to second air flue and the second gas outlet respectively, and described second
Air inlet is connected with first gas outlet；Second cylinder body is the square tube for the height that height is greater than first cylinder body
Shape, and second cylinder body is made of clear material.
6. auxiliary cylinder sleeve as claimed in claim 5, which is characterized in that the height of second cylinder body is the height of the first cylinder body
1.5 times.
7. auxiliary cylinder sleeve as claimed in claim 5, which is characterized in that second cylinder body is made of acrylic material.
8. auxiliary cylinder sleeve as claimed in claim 5, which is characterized in that between second cylinder body and the pedestal, described the
It is all made of clamping between one cylinder body and second cylinder body, between the end cap and first cylinder body and/or is bolted.
9. auxiliary cylinder sleeve as claimed in claim 5, which is characterized in that between second cylinder body and the pedestal, described the
Connecting end surface between one cylinder body and second cylinder body, between the end cap and first cylinder body is provided with sealing ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191437.8U CN208505616U (en) | 2018-07-25 | 2018-07-25 | It is a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter |
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| CN201821191437.8U CN208505616U (en) | 2018-07-25 | 2018-07-25 | It is a kind of for debugging the auxiliary cylinder sleeve of particle image velocimeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289563A (en) * | 2020-04-07 | 2020-06-16 | 东北石油大学 | Device and method for researching heat transfer and flow rules of oil storage tank in tubular heating process |
| CN111289564A (en) * | 2020-04-07 | 2020-06-16 | 东北石油大学 | Device and method for simulating heat transfer and flow rules in hot oil spraying and heating process of oil storage tank |
-
2018
- 2018-07-25 CN CN201821191437.8U patent/CN208505616U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289563A (en) * | 2020-04-07 | 2020-06-16 | 东北石油大学 | Device and method for researching heat transfer and flow rules of oil storage tank in tubular heating process |
| CN111289564A (en) * | 2020-04-07 | 2020-06-16 | 东北石油大学 | Device and method for simulating heat transfer and flow rules in hot oil spraying and heating process of oil storage tank |
| CN111289564B (en) * | 2020-04-07 | 2022-05-06 | 东北石油大学 | Device and method for simulating heat transfer and flow rules in hot oil spraying and heating process of oil storage tank |
| CN111289563B (en) * | 2020-04-07 | 2022-05-27 | 东北石油大学 | Device and method for researching heat transfer and flow rules of oil storage tank in tubular heating process |
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