CN107036922A - One kind visualization cavitation and cavitation erosion simultaneous test platform - Google Patents
One kind visualization cavitation and cavitation erosion simultaneous test platform Download PDFInfo
- Publication number
- CN107036922A CN107036922A CN201710153192.3A CN201710153192A CN107036922A CN 107036922 A CN107036922 A CN 107036922A CN 201710153192 A CN201710153192 A CN 201710153192A CN 107036922 A CN107036922 A CN 107036922A
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- Prior art keywords
- cavitation
- base
- embedded
- sight glass
- visualization
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
Abstract
Cavitation and cavitation erosion simultaneous test platform is visualized the invention discloses one kind, the device includes clamping screw, top cover, test sample, form, embedded sight glass and base etc.；The main points of its technical scheme are：Light path form that transparent material is made and the test sample of almag material are embedded between top cover and base, the test sample is the test specimen that can be arbitrarily replaced according to requirement of experiment.The present invention's is mainly used for while carrying out the visual research of cavitation and cavitation erosion；The invention aims at the synchronously visual experimental study of cavitation and cavitation erosion coupling, reduces cavitation and cavitation erosion and separately tests brought error, improves cavitating flows and the convenience and accuracy of cavitation corrosion research in nozzle.
Description
Technical field
It is a kind of in scaling runner and close specifically the present invention relates to diesel fuel injection system field
Visualization cavitation and cavitation erosion simultaneous test platform in the micro-aperture runner of full-size(d).
Background technology
Diesel engine can promote the atomizing effect of fuel oil in the cavitation that nozzle interior is produced, so as to improve the utilization of fuel oil
Rate and the discharge for reducing pollutant, but cavitation is also easily caused the cavitation wear of nozzle, has influence on the atomizing effect of fuel oil, even
Cavitation corrosion can promote nozzle micro-crack extension, cause the direct failure of nozzle.Therefore, the characteristic research of cavitating flows is always in nozzle
It is one of hot issue of domestic and international engine art.
But not yet thering is device effectively to meet cavitation and cavitation erosion synchronously visual experimental study, current nozzle interior is empty
Change and the research of cavitation phenomenon carry out the visualization of nozzle interior cavitating flows first with transparent nozzle still in the separated stage
Study on monitoring, the detection for then carrying out cavitation phenomenon using particulate metal material nozzle under the same test conditions is studied, this
The research mode of sample can not obtain the characteristic of cavitation and cavitation erosion simultaneously, and be difficult to obtain empty in the case where not destroying sample structure
Position distribution is lost, the test process result to the later stage brings certain error.
The content of the invention
The purpose of the present invention is to overcome shortcoming present in prior art to visualize cavitation and cavitation erosion simultaneous test there is provided one kind
Platform.
In order to solve above-mentioned technical problem, the present invention uses following technical proposals：
One kind visualization cavitation and cavitation erosion simultaneous test platform, including top cover, form, embedded sight glass and base；It is described
Embedded sight glass is T-shaped structure, and the great Duan Shangyi centers of the T-shaped structure are symmetrical to offer round tube hole C；The base
Upper surface core opened round groove, lower surface center offers elliptical aperture A, wherein, embedded sight glass one end
The elliptical aperture A of embedded base lower surface, the circular groove that the other end is opened up with base upper surface core is brought into close contact；Base
It is above corresponding at the round tube hole C that the big end of embedded sight glass is opened up to offer on round tube hole D, base horizontal direction with elliptical aperture
Symmetrical structure the identical circular hole runner B, circular hole runner B of offering extends to the round tube hole D opened up on base centered on A
Place；The form is T-shaped frustum cone structure, and the big end of form T-shaped frustum cone structure is arranged in the circular groove of base；Form T-shaped
Frustum cone structure small end is arranged in the circular hole opened up on top cover, and the top cover is connected by clamping screw with base.
Further, it is placed with test sample between the embedded sight glass and form.
Further, the test sample is flat on embedded sight glass upper surface, therewith laminating completely, sideways the bottom of with
The side of the circular groove of seat is engaged.
Further, the big end of the embedded sight glass T-shaped structure is cylinder, and the body diameter and base groove are straight
Footpath is equal, and the small end of embedded sight glass T-shaped structure is cylindroid, cylindroid ellipse size and the oval interporal lacuna of base
Coordinate.
Further, the test sample is the experimental sample being made up of hydronalium.
Further, the form is made up of glass material, circular through-hole diameter in the middle of the body diameter and top cover of upper end
Equal, the cylinder diameter of lower end is equal with base groove diameter.
Further, the test sample is cylindrical structural, and its runner Ι import and export on embedded sight glass with opening
If manhole C it is corresponding.
Experimental rig of the present invention has the advantages that compared with prior art：
1. the device can realize the synchronously visual experimental study of cavitation and cavitation erosion coupling, reduce cavitation and cavitation erosion and separately test institute
The error brought, improves cavitating flows and the convenience and accuracy of cavitation corrosion research in nozzle.
2. with versatility, can design proportion amplification runner and the micro-aperture runner close to full-size(d), only need to replace
Different test samples, just can carry out the cavitation and cavitation erosion simultaneous test operation of different spray orifice shape sizes；
3. cavitating flows and cavitation damage visualization measurement can be carried out simultaneously, determine that the position that cavitation corrosion occurs with cavitation is closed
System, improves result of the test accuracy.
4. more accurately cavitation corrosion position distribution can be obtained in the case where not destroying sample structure, reduce at the later stage
Error in reason analysis.
5. the present invention is simple in construction, it is easy to manufacture, easy for installation.
Brief description of the drawings
Fig. 1 be the present invention relates to testing stand structural representation；
Fig. 2 be the present invention relates to testing stand exploded perspective view；
Fig. 3 is the structural representation of the embedded sight glass that Fig. 1 of the present invention is related to and base engagement；
Fig. 4 is the form part schematic diagram that Fig. 1 of the present invention is related to；
Fig. 5 is the structural representation for the test sample that Fig. 1 of the present invention is related to；
Fig. 6 is the runner Ι of test sample in Fig. 5 of the present invention structural representation；
Fig. 7 be the present invention relates to embedded sight glass part schematic front view；
Fig. 8 be the present invention relates to embedded sight glass part schematic top plan view.
Reference is as follows：
1- clamping screws；2- top covers；3- test samples；4- forms；The embedded sight glass of 5-；6- bases.
Embodiment
To be further understood to the present invention, now below in conjunction with the accompanying drawings with embodiment to of the invention further detailed
Thin description：
With reference to attached Fig. 1 and 2, one kind visualization cavitation and cavitation erosion simultaneous test platform, including top cover 2, form 4, embedded form
Glass 5 and base 6；
With reference to accompanying drawing 7 and 8, the embedded sight glass 5 is T-shaped structure, the great Duan Shangyi centers of the T-shaped structure or so
Symmetrically offer round tube hole C；
With reference to accompanying drawing 3, the upper surface core opened round groove of base 6, lower surface center offers ellipse
Hole A, wherein, embedded one end of sight glass 5 is embedded in the elliptical aperture A of the lower surface of base 6, the other end and the upper surface center of base 6
The circular groove that part is opened up is brought into close contact；Hold corresponding at the round tube hole C opened up open on base 6 greatly to embedded sight glass 5
It is symmetrical centered on elliptical aperture A on the horizontal direction of base 6 to offer structure identical circular hole runner B provided with round tube hole D,
Circular hole runner B is extended at the round tube hole D opened up on base 6；
With reference to accompanying drawing 1 and 4, the form 4 is T-shaped frustum cone structure, and the big end of T-shaped frustum cone structure of form 4 is arranged on base 6
Circular groove in；The T-shaped frustum cone structure small end of form 4 is arranged in the circular hole opened up on top cover 2, and the top cover 2 passes through lock
Tight bolt 1 is connected with base 6.
With reference to 1 and 2, the upper surface middle body opened round groove of base 6, circular groove and the embedded appearance of sight glass 5
Face is brought into close contact, and test sample 3 is flat on the embedded upper end of sight glass 5, therewith laminating completely, circular recessed with base 6 sideways
Groove side is fitted close；Top cover 2 is fixedly connected by clamping screw 1 with base 6；In the upper end cylinder of form 4 and top cover 2
Between insertion portion laminating fix, lower end cylinder bottom surface fits with the top surface of test sample 3, close sideways with the groove of base 6 sideways
Coordinate.
With reference to 7, wherein, the big end of the T-shaped structure of embedded sight glass 5 is cylinder, the body diameter and the groove of base 6
Diameter is equal, and the small end of the T-shaped structure of embedded sight glass 5 is cylindroid, and cylindroid ellipse size and base 6 are oval
Interporal lacuna coordinates.
Embedded sight glass 5 is positioned in the circular groove of base 6, the cylindroid of the embedded lower end of sight glass 5
Wall is fitted with the ellipse hole inwall of base 6, forms linear sealing, and upper end cylinder wall is fitted with the groove inner wall of base 6,
Two manhole C on the embedded upper end cylinder of sight glass 5 are corresponding with the round tube hole D on the circular groove of base 6, make oil
Test sample 3 is positioned on embedded sight glass 5 by road along logical, the circular groove inwall of the wall of test sample 3 and base 6
Linear sealing is fitted, and the runner Ι of test sample 3 import and export are corresponding with the manhole C of embedded sight glass 5, is made whole
Form 4 is positioned on test sample 3 by runner along logical, and the groove inner wall linear sealing of the lower end cylinder wall of form 4 and base 6 is pasted
Close, the upper surface of lower end cylinder upper surface and base 6 is kept in the same horizontal line, the upper end cylinder wall of form 4 and top cover 2
The linear sealing of manhole inwall is fitted, and top cover 2 is tightly fitted with base 6 by clamping screw 1 and is integrated, and forms sealing.
In experimental implementation is carried out, fuel oil enters from the oil duct junction of the side of base 6, by the round tube hole B of base 6, embedded
The manhole C of the formula sight glass 5 and runner Ι of test sample 3, occurs cavitation empty on the runner Ι surfaces of test sample 3
Erosion, finally by runner Ι, flows out from the oil duct junction of the another side of base 6.
For the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment to the embodiment, not
In the case of the substantive content of the present invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (7)
1. one kind visualization cavitation and cavitation erosion simultaneous test platform, it is characterised in that including top cover (2), form (4), embedded form
Glass (5) and base (6)；The embedded sight glass (5) is T-shaped structure, great Duan Shangyi centers of the T-shaped structure or so pair
Title offers round tube hole C；Base (6) upper surface core opened round groove, lower surface center offers ellipse
Hole A, wherein, embedded sight glass (5) one end is embedded in the elliptical aperture A of base (6) lower surface, the other end and base (6) upper end
The circular groove that face core is opened up is brought into close contact；The round tube hole opened up is held greatly with embedded sight glass (5) on base (6)
Corresponding offer symmetrical centered on elliptical aperture A on round tube hole D, base (6) horizontal direction offers structure identical at C
Circular hole runner B, circular hole runner B is extended at the round tube hole D opened up on base (6)；The form (4) is T-shaped frustum cone structure,
Form (4) big end of T-shaped frustum cone structure is arranged in the circular groove of base (6)；Form (4) T-shaped frustum cone structure small end is arranged on
In the circular hole opened up on top cover (2), the top cover (2) is connected by clamping screw (1) with base (6).
2. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to claim 1, it is characterised in that described embedded to regard
Test sample (3) is placed between glass pane (5) and form (4).
3. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to claim 2, it is characterised in that the test sample
(3) embedded sight glass (5) upper surface is flat on, therewith laminating completely, sideways with the side phase of the circular groove of base (6)
Coordinate.
4. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to claim 1, it is characterised in that described embedded to regard
The big end of glass pane (5) T-shaped structure is cylinder, and the body diameter is equal with base (6) groove diameter, embedded sight glass
(5) small end of T-shaped structure is cylindroid, and cylindroid ellipse size coordinates with the oval interporal lacuna of base (6).
5. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to any one of claim 2 or 3, it is characterised in that
The test sample (3) is the experimental sample being made up of hydronalium.
6. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to any one of Claims 1-4, it is characterised in that institute
State form (4) to be made up of glass material, circular through-hole diameter is equal in the middle of the body diameter and top cover (2) of upper end, the circle of lower end
Column diameter is equal with base (6) groove diameter.
7. a kind of visualization cavitation and cavitation erosion simultaneous test platform according to claim 2, it is characterised in that the test sample
(3) it is cylindrical structural, its runner Ι import and export are corresponding with the manhole C opened up on embedded sight glass (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153192.3A CN107036922A (en) | 2017-03-15 | 2017-03-15 | One kind visualization cavitation and cavitation erosion simultaneous test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153192.3A CN107036922A (en) | 2017-03-15 | 2017-03-15 | One kind visualization cavitation and cavitation erosion simultaneous test platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107036922A true CN107036922A (en) | 2017-08-11 |
Family
ID=59534836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710153192.3A Pending CN107036922A (en) | 2017-03-15 | 2017-03-15 | One kind visualization cavitation and cavitation erosion simultaneous test platform |
Country Status (1)
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| CN (1) | CN107036922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907130A (en) * | 2019-12-04 | 2020-03-24 | 大连海事大学 | Cavitation impact effect detection system in closed pipeline |
| CN113390866A (en) * | 2020-03-12 | 2021-09-14 | 西南林业大学 | Parameter-adjustable observer for cavitation generation and evolution process |
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Application publication date: 20170811 |