CN108204877B - A kind of blown using strut reduces the steady state pressure probe of strut blockage effect - Google Patents
A kind of blown using strut reduces the steady state pressure probe of strut blockage effect Download PDFInfo
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- CN108204877B CN108204877B CN201710402534.0A CN201710402534A CN108204877B CN 108204877 B CN108204877 B CN 108204877B CN 201710402534 A CN201710402534 A CN 201710402534A CN 108204877 B CN108204877 B CN 108204877B
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- strut
- probe
- air supply
- supply pipe
- blown
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention belongs to fluid field pressure the field of test technology.The invention discloses a kind of blown using strut to reduce the steady state pressure probe of strut blockage effect, it is characterised in that: comprising end of probe, strut, air supply pipe, connects mouth；The end of probe and strut weld；End of probe is connected with pressure guiding pipe, and pressure guiding pipe is packaged in inside strut, connect with the mouth that connects being welded on strut；The mouth that connects is cylindrical-shaped structure, is welded on the side or top of strut, seals；The strut is enclosed construction, and towards incoming flow, single-row or multiple row circular hole is opened at back, and hole is connected or communicates with air supply pipe；The air supply pipe is connect with the mouth that connects being welded on strut.By controlling the air-blowing quantity of strut, blockage effect caused by probe strut tail is reduced.Compared with existing probe, the present invention can weaken interference of the insertion probe to tested flow field by the circular hole air blowing on strut surface.
Description
Technical field
The invention belongs to fluid field pressure the field of test technology, are related to the measuring device of flow field steady state pressure, and in particular to one
Kind is blown using strut reduces the steady state pressure probe of strut blockage effect.
Background technique
At present inside in stream experimental test, such as between air-flow the imports such as compressor, turbine, fan, blower, outlet, grade
The measurement of the flow field parameters such as direction, stagnation pressure, static pressure, speed, through obtaining above-mentioned performance frequently with plug-type steady state pressure probe
Parameter and flow field characteristic.
Since these plug-type pressure probes need strut support, and strut can generate certain do to tested flow field
It disturbs, causes flowing mixing loss, flowing blocking, the normal operation of testpieces is even influenced when serious.For example, when probe insertion is small
When size compressor inlet measures, probe strut tail will cause relatively serious blocking, causes compressor and shifts to an earlier date stall
Even surge.When measuring turbine internal flow field parameters using plug-in type steady state pressure probe, strut tail can generate blockage effect,
The flow behavior for interfering tested flow field, influences the measurement of downstream flow field parameter.
Summary of the invention
The present invention solves the technical problem of: using plug-in type steady state pressure probe measurement turbine airflow direction,
When the flow field parameters such as stagnation pressure, static pressure, speed, strut tail can generate blockage effect, interfere the flow behavior in tested flow field, influence
The measurement of downstream flow field parameter.The present invention is that a kind of blown using strut reduces the steady state pressure probe of strut blockage effect, is led to
The circular hole blow gas on strut surface is crossed, the blockage effect of probe strut is reduced, weakens insertion probe and tested flow field is done
It disturbs.
In order to solve above-mentioned technical problem, design scheme of the invention are as follows:
1. a kind of blown using strut reduces the steady state pressure probe of strut blockage effect, it is characterised in that: include probe
Head (1), air supply pipe (5), connects mouth (6) at strut (2)；The end of probe (1) and strut (2) are welded；End of probe (1) with
Pressure guiding pipe (3) is connected, and pressure guiding pipe (3) is packaged in strut (2) inside, connect with the mouth (6) that connects being welded on strut (2)；It is described
Connecing mouth (6) is cylindrical-shaped structure, is welded on the side or top of strut (2), seals；The strut (2) is closing
Formula structure, towards incoming flow, single-row or multiple row circular hole (4) is opened at back, and hole (4) are connected or communicate with air supply pipe (5)；The air supply pipe
(5) it is connect with the mouth (6) that connects being welded on strut (2).
2. further, end of probe (1) can be the pressure probes such as single hole, three holes, four holes, five holes, seven apertures in the human head.
3. further, probe strut (2) section can be circle, kidney-shaped, wedge shape structure.
4. the angle between two column hole (4) is 0 °~180 ° further, if strut (2) back is opened multiple row circular hole (4).
5. further, a column circular hole (4) on probe strut (2) surface, aperture is 0.1~2mm, the aperture of each hole (4)
It can be the same or different.
6. further, a column circular hole (4) on probe strut (2) surface, the distance between two holes (4) are 2~20mm, circular hole
(4) along axially can uniformly arrange or unevenly arrange, the number of each column hole (4) can be long according to the measurement of strut (2)
Depending on degree.
7. further, air supply pipe (5) extend into strut (2) inside, diameter is 0~3mm, and air supply pipe (5) can be single
Or more.
8. further, air supply pipe (5) is connected with circular hole (4), and corresponds, and air supply pipe (5) is communicated with circular hole (4),
Air supply pipe (5) blowing end can be located at any position of strut (2) top to bottom.
9. further, it is 0 °~90 ° with strut angle that strut (2) side can be welded on by, which connecing mouth (6), can also be vertical
It is welded on strut (2) top, length is 0~30mm.
The present invention can control gas blowout amount under conditions of known incoming-flow pressure and direction by calibration experiments,
Reduce the blockage effect of probe strut, weakens interference of the insertion probe to tested flow field.
Compared with conventional art, what the present invention can achieve is had the technical effect that
When to parameter measurements such as turbomachine flow field pressure, speed, the present invention can be subtracted by strut blow gas
The blockage effect of small probe strut weakens interference of the insertion probe to tested flow field.
It can be applied to the measurement of the turbines interior flow field parameter such as compressor, turbine, fan, blower, it can also be used to pipeline,
The measurement in outflow flow field.
Detailed description of the invention
Fig. 1 is that a kind of blown using strut of the present invention reduces the main view of the steady state pressure probe embodiments of strut blockage effect
Figure；
Fig. 2 is that a kind of blown using strut of the present invention reduces the left view of the steady state pressure probe embodiments of strut blockage effect
Figure.
Wherein: 1. probes；2. probe strut；3. pressure guiding pipe；4. the circular hole on strut surface；5. air supply pipe；6. connecing mouth.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment
As shown in Figure 1, describing a kind of blow using strut in the present embodiment reduces the steady state pressure of strut blockage effect
Probe, it is characterised in that: comprising end of probe (1), strut (2), air supply pipe (5), connect mouth (6)；The end of probe (1) and branch
Bar (2) welding；End of probe (1) is connected with pressure guiding pipe (3), and it is internal that pressure guiding pipe (3) is packaged in strut (2), and is welded on strut
(2) mouth (6) connection is connect on；Described connect mouth (6) are cylindrical-shaped structure, are welded on the side and top of strut (2), play sealing and make
With；The strut (2) is enclosed construction, and towards incoming flow, back is opened single-row circular hole (4), and aperture is by strut (2) top to probe
Head (1) equal difference increases, and communicates with air supply pipe (5)；The air supply pipe (5) be it is single, connect mouth with being welded on strut (2)
(6) it connects.
In the present embodiment, end of probe (1) is five pore structure of rotary table；Strut (1) is round bar, diameter 6mm；Circular hole (4)
Diameter is 0.1~1mm, and aperture is increased by strut (2) top to end of probe (1) equal difference；The distance between two holes (4) are 4mm,
And it uniformly arranges；7 holes (4) are opened altogether in strut back；Air supply pipe (5) diameter is 0.5mm；It is welded on connecing for strut (2) side
Mouth (6) is 60 ° with strut angle, length 10mm.
The present embodiment compensates for the non-uniform disadvantage of gas output in each hole, can more be effectively reduced blockage effect.
The present invention can control gas blowout amount, subtract by calibration experiments under conditions of known incoming-flow pressure, direction
The blockage effect of small probe strut weakens interference of the insertion probe to tested flow field.
Claims (7)
1. a kind of blown using strut reduces the steady state pressure probe of strut blockage effect, it is characterised in that: include end of probe
(1), strut (2), air supply pipe (5), connect mouth (6)；The end of probe (1) and strut (2) are welded；End of probe (1) and impulse
It manages (3) to be connected, pressure guiding pipe (3) is packaged in strut (2) inside, connect with the mouth (6) that connects being welded on strut (2)；It is described to connect mouth
(6) it is cylindrical-shaped structure, is welded on the side or top of strut (2), seals；The strut (2) is closed knot
Structure, towards incoming flow, single-row or multiple row circular hole (4) is opened at back, and hole (4) are connected or communicate with air supply pipe (5)；The air supply pipe (5)
It is connect with the mouth (6) that connects being welded on strut (2)；
Probe strut (2) section is round, kidney-shaped or wedge shape structure；
The air supply pipe (5) extend into strut (2) inside, and diameter is 0~3mm, and air supply pipe (5) is single or more.
2. a kind of blown using strut according to claim 1 reduces the steady state pressure probe of strut blockage effect, special
Sign is: end of probe (1) is single hole, three holes, four holes, five holes or seven apertures in the human head pressure probe.
3. a kind of blown using strut according to claim 1 reduces the steady state pressure probe of strut blockage effect, special
Sign is: if strut (2) back is opened multiple row circular hole (4), the angle between two column hole (4) is 0 °~180 °.
4. a kind of blown using strut according to claim 1 or 3 reduces the steady state pressure probe of strut blockage effect,
Be characterized in that: a column circular hole (4) on strut (2) surface, aperture are 0.1~2mm, and the aperture of each hole (4) is identical or different.
5. a kind of blown using strut according to claim 1 reduces the steady state pressure probe of strut blockage effect, special
Sign is: a column circular hole (4) on strut (2) surface, and the distance between two holes (4) are 2~20mm, and circular hole (4) is along axial uniform
Arrangement or uneven arrangement, the number of each column hole (4) is depending on the measurement length of strut (2).
6. a kind of blown using strut according to claim 1 reduces the steady state pressure probe of strut blockage effect, special
Sign is: air supply pipe (5) is connected with circular hole (4), and corresponds；Air supply pipe (5) is communicated with circular hole (4), and air supply pipe (5) is blown
Gas end is located at any position of strut (2) top to bottom.
7. a kind of blown using strut according to claim 1 reduces the steady state pressure probe of strut blockage effect, special
Sign is: connecing mouth (6) and is welded on strut (2) side, with strut angle is 0 °~90 ° or is vertically welded in strut (2) top
End, length are 0~30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710402534.0A CN108204877B (en) | 2017-06-01 | 2017-06-01 | A kind of blown using strut reduces the steady state pressure probe of strut blockage effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710402534.0A CN108204877B (en) | 2017-06-01 | 2017-06-01 | A kind of blown using strut reduces the steady state pressure probe of strut blockage effect |
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| Publication Number | Publication Date |
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| CN108204877A CN108204877A (en) | 2018-06-26 |
| CN108204877B true CN108204877B (en) | 2019-10-29 |
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| CN201710402534.0A Active CN108204877B (en) | 2017-06-01 | 2017-06-01 | A kind of blown using strut reduces the steady state pressure probe of strut blockage effect |
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| CN108225661B (en) * | 2017-06-21 | 2019-11-12 | 北京航空航天大学 | A kind of steady state pressure probe reducing strut blockage effect using strut air-breathing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202974619U (en) * | 2012-11-30 | 2013-06-05 | 沈阳鼓风机集团安装检修配件有限公司 | Total pressure probe |
| CN203432741U (en) * | 2013-08-30 | 2014-02-12 | 哈尔滨东安发动机（集团）有限公司 | Pressure probe |
| KR101809792B1 (en) * | 2015-09-03 | 2018-01-18 | 암페놀센싱코리아 유한회사 | Sensor for detecting pressure of refrigerant |
| WO2017065312A1 (en) * | 2015-10-16 | 2017-04-20 | 株式会社テイエルブイ | Sensor device |
| CN107132000B (en) * | 2017-05-08 | 2019-02-26 | 北京航空航天大学 | A kind of pressure probe comb with air blowing branching rod structure |
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