CN109386490A - A kind of Compressor Cascades suction socket and its design method - Google Patents
A kind of Compressor Cascades suction socket and its design method Download PDFInfo
- Publication number
- CN109386490A CN109386490A CN201811525029.6A CN201811525029A CN109386490A CN 109386490 A CN109386490 A CN 109386490A CN 201811525029 A CN201811525029 A CN 201811525029A CN 109386490 A CN109386490 A CN 109386490A
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- Prior art keywords
- leaf grating
- leaf
- blade back
- suction socket
- parallel lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The close stream that the application belongs to during Compressor Cascades test compares control technology field, more particularly to a kind of Compressor Cascades suction socket and its design method, design method includes that leaf grating selectes step: choosing two leaf gratings adjacent in plane cascade as the first leaf grating and the second leaf grating；Parallel lines determine step: making first parallel lines and second parallel lines parallel with the blade back of the second leaf grating, H1 < H2 between the first leaf grating and the second leaf grating；Blade back vertical line determines step: the vertical line for crossing the first leaf grating leading edge point the second blade back of work obtains blade back vertical line；Trailing edge connecting line determines step: the first leaf grating trailing edge point of connection and the second leaf grating trailing edge point obtain trailing edge connecting line；Suction socket opens up area determination step: the first parallel lines, the first parallel lines, blade back vertical line and trailing edge connecting line surround suction socket in the projection of the end wall of plane cascade and open up region.
Description
Technical field
The close stream that the application belongs to during Compressor Cascades test compares control technology field, and in particular to a kind of pressure
Mechanism of qi plane cascade suction socket and its design method, to realize the control to the close stream ratio during Compressor Cascades test
System.
Background technique
When carrying out Compressor Cascades performance test, due to, there are strong adverse pressure gradient, often going out in blade grid passage
The case where existing conduit end-wall boundary layer separation, the separation of conduit end-wall boundary layer will lead to close stream than bigger than normal, cause in plane leaf
Cascade performance parameter, such as loss coefficient, outlet flow angle, blade surface static pressure for being measured when grid performance test etc., with binary
There is biggish deviation in true value under flow field, from the performance for being unable to correctly reflection leaf grating.
Currently, for that can accurately measure to obtain the performance parameter of leaf grating, suction usually is opened after 50% chord length of end wall
Slot, to absorb the low energy fluid of end wall, thus by close stream than control in target zone.It is verified, pumping is opened up according to the above method
Bothrium, good effect can be obtained by separating lesser plane cascade for end wall, but due to the initially-separate of end-wall boundary layer
Point change with the difference of the angle of attack and Mach number, the big angle of attack, High Mach number experimental condition under, according to the method described above
The suction groove location opened up is relatively to the rear, to adjust, control close stream ratio in target zone, required aspiration is larger, causes
It tests difficulty and experimentation cost increases, in addition, in one timing of equipment suction capactity, it is not easy to by close stream than adjusting, controlling to mesh
It marks in range.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
The purpose of the application is to provide a kind of Compressor Cascades suction socket and its design method, on overcoming or alleviated by
State the technological deficiency of at least one aspect.
The technical solution of the application is:
On the one hand a kind of Compressor Cascades suction socket design method is provided, comprising the following steps:
Leaf grating selectes step: choosing a leaf grating in plane cascade as the first leaf grating；It chooses in plane cascade with the
The adjacent leaf grating of one leaf grating is located at the side where the leaf basin of the first leaf grating as the second leaf grating, the second leaf grating；
Parallel lines determine step: make the first parallel lines and the second parallel lines between the first leaf grating and the second leaf grating, first
Parallel lines and the second parallel lines are parallel with the blade back of the second leaf grating；Wherein, the distance of blade back of first parallel lines away from the second leaf grating
For H1；The distance of blade back of second parallel lines away from the second leaf grating is H2, H1 < H2；
Blade back vertical line determines step: crossing the vertical line that the first leaf grating leading edge point makees the blade back of the second leaf grating, which is known as leaf
Carry on the back vertical line；
Trailing edge connecting line determines step: the first leaf grating trailing edge point of connection and the second leaf grating trailing edge point obtain trailing edge connecting line；
Suction socket opens up area determination step: the first parallel lines, the first parallel lines, blade back vertical line and trailing edge connecting line edge
The vertical direction of the end wall of plane cascade, which is projected, to be surrounded suction socket to end wall and opens up region；
Suction socket opens up step: suction socket being opened up region and is opened up as suction socket.
According at least one embodiment of the application, H1=1mm.
According at least one embodiment of the application, H2=3mm.
On the other hand a kind of Compressor Cascades suction socket being provided, suction socket opens up on the end wall of plane cascade,
And it is located between the leaf basin of the first leaf grating and the blade back of the second leaf grating, wherein the first leaf grating and the second leaf grating is in plane cascades
Two adjacent leaf gratings；
Suction socket includes
The first side wall face, parallel with the blade back of the second leaf grating, the distance between blade back of the second leaf grating is H1；
Second side wall surface, it is opposite with the first side wall face and parallel with the blade back of the second leaf grating, with the blade back of the second leaf grating it
Between distance be H2, H1 < H2；
Third side wall surface intersects with the first side wall face and second side wall surface, vertical with the blade back of the second leaf grating, and with
The leading edge point of one leaf grating is in the same plane；
4th side wall surface intersects with the first side wall face and second side wall surface, and with the trailing edge of the first leaf grating point and
The trailing edge point of two leaf gratings is in the same plane.
According at least one embodiment of the application, H1=1mm.
According at least one embodiment of the application, H2=3mm.
At least there are following advantageous effects in the application: on the one hand providing a kind of Compressor Cascades suction socket
Design method, on the other hand provides a kind of Compressor Cascades suction socket, which can be by above-mentioned suction socket design side
Method obtains suction socket and opens up to open up to obtain on region, can easily absorb the low energy fluid at end wall by it, effectively disappear
Except the separation of end-wall boundary layer, close stream can be met into the experimental condition in the big angle of attack, High Mach number in target zone than control
The adjusting of the plane cascade test performance of lower progress, demand for control.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Compressor Cascades provided by the embodiments of the present application；
Fig. 2 is the schematic diagram for the Compressor Cascades suction socket for applying for that embodiment provides.
Wherein:
1- end wall；2- leaf basin；3- blade back；4- leading edge point；5- trailing edge point；The first parallel lines of 6-；The first parallel lines of 7-；8- tail
Edge point connecting line；9- blade back vertical line；The first leaf grating of 10-；The second leaf grating of 11-.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related application, rather than the restriction to this application.It also should be noted that in order to
Convenient for description, part relevant to the application is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that in the description of the present application, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ", " third " are only used
In description purpose, it is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present application unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the application.
1 to Fig. 2 the application is described in further details with reference to the accompanying drawing.
On the one hand a kind of Compressor Cascades suction socket design method is provided, comprising:
Leaf grating selectes step: choosing a leaf grating in plane cascade as the first leaf grating 10；Choose plane cascade in
The adjacent leaf grating of first leaf grating 10 is located at the side where the leaf basin of the first leaf grating 10 as the second leaf grating 11, the second leaf grating 11；
Parallel lines determine step: making the first parallel lines 6 and the second parallel lines between the first leaf grating 10 and the second leaf grating 11
7, the first parallel lines 6 and the second parallel lines 7 are parallel with the blade back of the second leaf grating 11；Wherein, the first parallel lines 6 are away from the second leaf grating 11
Blade back distance be H1；The distance of blade back of second parallel lines 7 away from the second leaf grating 11 is H2, H1 < H2；
Blade back vertical line determines step: the vertical line for crossing the blade back that 10 leading edge point of the first leaf grating makees the second leaf grating 11 obtains blade back and hangs down
Line 9；
Trailing edge connecting line determines step: connection 10 trailing edge point of the first leaf grating and 11 trailing edge point of the second leaf grating obtain trailing edge company
Wiring 8；
Suction socket opens up area determination step: the first parallel lines 6, the second parallel lines 7, blade back vertical line 9 and trailing edge connection
Line 8 is projected along the vertical direction of the end wall 1 of plane cascade to be surrounded suction socket to end wall 1 and opens up region；
Suction socket opens up step: opening up region sideline along suction socket and opens up suction socket.
In some alternative embodiments, H1=1mm.
In some alternative embodiments, H2=3mm.
On the other hand a kind of Compressor Cascades suction socket being provided, suction socket opens up on the end wall 1 of plane cascade,
And it is located between the leaf basin of the first leaf grating 10 and the blade back of the second leaf grating 11, wherein the first leaf grating 10 and the second leaf grating 11 are flat
Two adjacent leaf gratings in the leaf grating of face；
Suction socket includes
The first side wall face, parallel with the blade back of the second leaf grating 11, the distance between blade back of the second leaf grating 11 is H1；
Second side wall surface, opposite with the first side wall face and parallel with the blade back of the second leaf grating 11, the leaf with the second leaf grating 11
The distance between back is H2, H1 < H2；
Third side wall surface intersects with the first side wall face and second side wall surface, vertical with the blade back of the second leaf grating 11, and with
The leading edge point of first leaf grating 10 is in the same plane；
4th side wall surface intersects with the first side wall face and second side wall surface, and with the trailing edge point of the first leaf grating 10 and
The trailing edge point of second leaf grating 11 is in the same plane.
In some alternative embodiments, H1=1mm.
In some alternative embodiments, H2=3mm.
So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the application, still, this field
Technical staff is it is easily understood that the protection scope of the application is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of application, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement is fallen within the protection scope of the application.
Claims (6)
1. a kind of Compressor Cascades suction socket design method, which comprises the following steps:
Leaf grating selectes step: choosing a leaf grating in the plane cascade as the first leaf grating (10)；Choose the plane leaf
The leaf grating adjacent with first leaf grating (10) is located at described first as the second leaf grating (11), second leaf grating (11) in grid
Side where the leaf basin of leaf grating (10)；
Parallel lines determine step: make between first leaf grating (10) and second leaf grating (11) the first parallel lines (6) and
Second parallel lines (7), first parallel lines (6) and second parallel lines (7) and the blade back of second leaf grating (11) are flat
Row；Wherein, the distance of blade back of first parallel lines (6) away from second leaf grating (11) is H1；Second parallel lines (7)
The distance of blade back away from second leaf grating (11) is H2, H1 < H2；
Blade back vertical line determines step: excessively described first leaf grating (10) leading edge point makees the vertical line of the blade back of second leaf grating (11),
The vertical line is blade back vertical line (9)；
Trailing edge connecting line determines step: connection the first leaf grating (10) trailing edge point and second leaf grating (11) trailing edge point obtain
Trailing edge connecting line (8)；
Suction socket opens up area determination step: first parallel lines (6), second parallel lines (7), the blade back vertical line
(9) and the trailing edge connecting line (8) is projected to the end wall (1) along the vertical direction of the end wall (1) of the plane cascade and is enclosed
Region is opened up at suction socket；
Suction socket opens up step: the suction socket being opened up region and is opened up as suction socket.
2. suction socket design method according to claim 1, which is characterized in that the H1=1mm.
3. suction socket design method according to claim 2, which is characterized in that the H2=3mm.
4. a kind of Compressor Cascades suction socket,
The suction socket opens up on the end wall (1) of the plane cascade, and is located at the leaf basin and the second leaf of the first leaf grating (10)
Between the blade back of grid (11), wherein
First leaf grating (10) is two adjacent leaf gratings in plane cascade with second leaf grating (11)；
It is characterized in that, the suction socket includes
The first side wall face, it is parallel with the blade back of second leaf grating (11), between the blade back of second leaf grating (11) away from
From for H1；
Second side wall surface, it is opposite with the first side wall face and parallel with the blade back of second leaf grating (11), with described second
The distance between blade back of leaf grating (11) is H2, H1 < H2；
Third side wall surface intersects with the first side wall face and second side wall surface, the leaf with second leaf grating (11)
Back is vertical, and in the same plane with the leading edge point of first leaf grating (10)；4th side wall surface, with the first side wall
Face and second side wall surface intersection, and the tail with the trailing edge point of first leaf grating (10) and second leaf grating (11)
Edge point is in the same plane.
5. suction socket according to claim 4, which is characterized in that the H1=1mm.
6. suction socket according to claim 5, which is characterized in that the H2=3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525029.6A CN109386490B (en) | 2018-12-13 | 2018-12-13 | Compressor plane cascade suction groove and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525029.6A CN109386490B (en) | 2018-12-13 | 2018-12-13 | Compressor plane cascade suction groove and design method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386490A true CN109386490A (en) | 2019-02-26 |
| CN109386490B CN109386490B (en) | 2020-05-15 |
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ID=65430289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811525029.6A Active CN109386490B (en) | 2018-12-13 | 2018-12-13 | Compressor plane cascade suction groove and design method thereof |
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| Country | Link |
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| CN (1) | CN109386490B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302984A (en) * | 2020-10-28 | 2021-02-02 | 上海交通大学 | Implementation method of experimental suction groove of plane cascade of gas compressor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108108549A (en) * | 2017-12-15 | 2018-06-01 | 中国航发沈阳发动机研究所 | A kind of close stream of plane cascade axial velocity compares control method |
-
2018
- 2018-12-13 CN CN201811525029.6A patent/CN109386490B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108108549A (en) * | 2017-12-15 | 2018-06-01 | 中国航发沈阳发动机研究所 | A kind of close stream of plane cascade axial velocity compares control method |
Non-Patent Citations (1)
| Title |
|---|
| 郭爽等: "端壁抽吸位置对大转角扩压叶栅流场及负荷的影响", 《推进技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302984A (en) * | 2020-10-28 | 2021-02-02 | 上海交通大学 | Implementation method of experimental suction groove of plane cascade of gas compressor |
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| Publication number | Publication date |
|---|---|
| CN109386490B (en) | 2020-05-15 |
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