CN106996848A - A kind of pressure probe of use single row of holes gaseous film control - Google Patents
A kind of pressure probe of use single row of holes gaseous film control Download PDFInfo
- Publication number
- CN106996848A CN106996848A CN201710251001.7A CN201710251001A CN106996848A CN 106996848 A CN106996848 A CN 106996848A CN 201710251001 A CN201710251001 A CN 201710251001A CN 106996848 A CN106996848 A CN 106996848A
- Authority
- CN
- China
- Prior art keywords
- probe
- pole
- flow
- temperature
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01L19/0681—Protection against excessive heat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of pressure probe of use single row of holes gaseous film control, including end of probe, pole, pressure guiding pipe, air film hole, air inlet pipe.The end of probe is welded with pole, and pressure guiding pipe one end is arranged at the pressure tap on end of probe, is passed inside pole.Pole Surface Machining air film hole.Air inlet pipe is according to main flow flow and temperature; cooling gas flow and temperature inside regulation feeding pole; and send into cryogenic gas inside pole by appendix, cryogenic gas forms low temperature air film protection probe from the inside that pole is begun to fill with end of probe and from air film hole blowout.By the above-mentioned means, the present invention can be on the basis of pressure probe internal cooling in detecting probe surface formation cooling air film, it is to avoid high temperature gas flow directly exchanges heat with detecting probe surface.Simultaneously according to come the flow and temperature that flow, adjust the jet flow and temperature of cooling air-flow, it is ensured that cooling effectiveness, prevent high temperature flow-field test high temperature from causing tissue damage.
Description
Technical field
The present invention relates to high temperature flow field technical field of measurement and test, more particularly to a kind of pressure of use single row of holes gaseous film control
Probe, can prevent probe from being flowed damage by high temperature in the test in high temperature flow field.
Background technology
Often need to measure the pressure in high temperature flow field in experiment or industrial production, but usual pressure probe does not have
There is cooling device, if directly being measured to high temperature flow field, probe is often deformed or even is broken because of too high temperature.In order to
Improve the temperature that probe can bear, it is necessary to carry out cooling protection.Oneself the various types of cooling through developing are visible at present for contrast,
The research in air cooling direction is more, mainly includes convection current cooling, impinging cooling, rib of column cooling etc. and gaseous film control etc..Correspondence
Probe for high temperature flow-field test carries out reasonably Cooling Design, is just avoided that high temperature failure probe, appoints so as to complete test
Business.
The content of the invention
The present invention solves the technical problem of provide a kind of pressure probe of use single row of holes gaseous film control, Neng Goutong
Air film cooling technology reduction probe temperature is crossed, probe can effectively be protected by air film when direction of flow is relatively stable, from
And realize and measured in high temperature flow field.
In order to solve the above technical problems, one aspect of the present invention is：
A kind of pressure probe of use single row of holes gaseous film control is provided, it is characterised in that including：End of probe, pole, draw
Pressure pipe, air film hole, group section, air inlet pipe.The end of probe is welded with pole, pressure guiding pipe quantity and end of probe number of aperture pair
And one end should be arranged at the pressure tap on end of probe, the other end is passed through inside pole, is stretched out from the hole on group section.
Further, in pole Surface Machining air film hole, air inlet pipe sends into cryogenic gas inside pole, and cryogenic gas is from gas
Fenestra blows out and is attached to pole surface under come the effect of flowing, so that forming low temperature air film prevents from high temperature to flow damage probe.
Further, air inlet pipe need to adjust the cooling gas flow and temperature inside feeding pole according to main flow flow and temperature
Degree, so as to keep suitable air blowing ratio and temperature ratio.
Further, 4 to 8 millimeters of pressure probe head outer diameter, 10 to 15 millimeters of length.
Further, the stagnation point angle on air film axially bored line and probe pole is between ± 10 degree to ± 45 degree, Kong Weizhi
The circular hole in 0.5 to 1 millimeter of footpath.
Further, air film hole axis direction and pole axis direction angle are 30 degree to 60 degree, between air film hole, air film hole
1.5 millimeters to 5 millimeters of distance between pole two ends, mutually coordinate, it is ensured that gap ratio 3 to 5 with aperture.
Further, 2 to 5 millimeters of pole internal diameter, 1.5 millimeters to 4 millimeters of wall thickness, according to aperture and air film hole axis direction with
The angle of pole axis direction is coordinated, it is ensured that draw ratio 3 to 5.
Further, air inlet pipe is adjusted according to main flow flow, it is ensured that air film hole air blowing ratio be 0.4 to 1.5 between.
Further, air inlet pipe is according to main flow temperature adjustment cooling gas temperature, it is ensured that cooling air-flow compares 0.4 with main flow temperature
To 1.
The beneficial effects of the invention are as follows：The present invention forms cooling gas on the basis of pressure probe internal cooling on surface
Film, directly high temperature gas flow-cooling air film-probe is become in the region of film overcast by high temperature gas flow with detecting probe surface heat transfer
The three temperature heat transfer systems on surface.Simultaneously according to come the flow and temperature that flow, the jet flow and temperature of cooling air-flow are adjusted, is protected
Cooling effectiveness is demonstrate,proved, prevents high temperature flow-field test high temperature from causing tissue damage.
Brief description of the drawings
Fig. 1 is a kind of preferred embodiment schematic diagram of pressure probe one of use single row of holes gaseous film control；
Fig. 2 is a kind of pressure probe air film hole sectional view of use single row of holes gaseous film control；
The mark of each part is as follows in accompanying drawing：1st, end of probe；2nd, pole；3rd, pressure guiding pipe；4th, air film hole；5th, group section；
6th, air inlet pipe.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
As shown in figure 1, a kind of pressure probe of use single row of holes gaseous film control, including：End of probe (1), pole (2),
Pressure guiding pipe (3), air film hole (4), group section (5), air inlet pipe (6).End of probe (1) is welded with pole (2), pressure guiding pipe (3) number
Amount is corresponding with end of probe (1) number of aperture and by one end at the pressure tap on the end of probe (1), and the other end is from pole
(2) it is internal to pass through, stretched out from the hole on group section (5).
4 millimeters of end of probe (1) external diameter, 12 millimeters of length.It is in open air film at ± 15 degree in probe pole (2) and stagnation point
Hole (4), hole is the circular hole of 0.6 millimeter of diameter.Air film hole (4) axis direction and pole (2) axis direction angle are 30 degree, air film
2.4 millimeters of pitch of holes.5 millimeters of pole (2) internal diameter, 1.5 millimeters of wall thickness, 50 millimeters of length.
A kind of pressure probe for use single row of holes gaseous film control that the present embodiment is introduced, is joined by Rational choice air film hole
Number, it is 4 to make air film hole gap ratio, and draw ratio is about 3.8, with preferable cooling effectiveness, at actually measurement flow field, according to master
Flow parameter regulation jet flow and temperature, it is ensured that the cooling effectiveness of low temperature air film, prevent from high temperature to flow damage probe, while air film
Avoid end of probe, it is to avoid interference of the jet to measurement, continue so as to ensure that probe can be stablized in high temperature flow field
Ground is accurately measured.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of pressure probe of use single row of holes gaseous film control, it is characterised in that including：End of probe (1), pole (2), draw
Pressure pipe (3), air film hole (4), group section (5), air inlet pipe (6), wherein：
The end of probe (1) and pole (2) are welded, and pressure guiding pipe (3) quantity is corresponding with end of probe (1) number of aperture and by one end
At the pressure tap on end of probe (1), the other end is passed through inside pole (2), is stretched out from the hole on group section (5)；
Pole (2) the Surface Machining air film hole (4), the internal close spy of pole (2) is sent cryogenic gas into by air inlet pipe (6)
Needle section (1) place, cryogenic gas begins to fill with the inside of pole (2) from close end of probe (1) and blown from air film hole (4)
Go out, pole (2) surface is attached under come the effect of flowing, so that forming low temperature air film prevents from high temperature to flow damage probe；
Cooling gas flow and temperature that the air inlet pipe (6) is sent into inside pole according to main flow flow and temperature, regulation, so that
Keep suitable air blowing ratio and temperature ratio.
2. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：End of probe
(1) 4 to 8 millimeters of external diameter, 10 to 15 millimeters of length can be the loose structures such as single hole, diplopore, three holes, four holes, five holes.
3. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：Air film hole
(4) the stagnation point angle on axis and probe pole (2) is between ± 10 degree to ± 45 degree, and hole is 0.5 to 1 millimeter of diameter
Circular hole.
4. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：Air film hole
(4) axis direction and pole (2) axis direction angle are 30 degree to 60 degree, 1.5 millimeters to 5 millimeters of air film pitch of holes, with aperture
Mutually coordinate, it is ensured that gap ratio 3 to 5.
5. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：Pole (2)
2 to 5 millimeters of internal diameter, 1.5 millimeters to 4 millimeters of wall thickness, according to aperture and air film hole (4) axis direction and pole (2) axis direction
Angle coordinated, it is ensured that draw ratio 3 to 5.
6. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：Air inlet pipe
(6) according to main flow Flow-rate adjustment cooling gas flow, it is ensured that air film hole (4) air blowing ratio be 0.4 to 1.5 between.
7. a kind of pressure probe of use single row of holes gaseous film control according to claim 1, it is characterised in that：Air inlet pipe
(6) according to main flow temperature adjustment cooling gas temperature, it is ensured that cooling air-flow is with main flow temperature than 0.4 to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251001.7A CN106996848B (en) | 2017-04-18 | 2017-04-18 | Pressure probe adopting single-row-hole air film cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251001.7A CN106996848B (en) | 2017-04-18 | 2017-04-18 | Pressure probe adopting single-row-hole air film cooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106996848A true CN106996848A (en) | 2017-08-01 |
| CN106996848B CN106996848B (en) | 2020-05-22 |
Family
ID=59434114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710251001.7A Active CN106996848B (en) | 2017-04-18 | 2017-04-18 | Pressure probe adopting single-row-hole air film cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106996848B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238511A (en) * | 2018-07-19 | 2019-01-18 | 中国航发沈阳发动机研究所 | A kind of temperature test detector probe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599531A (en) * | 1982-07-09 | 1984-01-18 | Hitachi Ltd | Pressure detecting device |
| CN201177544Y (en) * | 2008-03-14 | 2009-01-07 | 东南大学 | Blocking proof pressure pipe |
| CN103398815A (en) * | 2013-08-01 | 2013-11-20 | 哈尔滨东安发动机（集团）有限公司 | Pressure probe |
| CN103452595A (en) * | 2013-09-25 | 2013-12-18 | 青岛科技大学 | Novel air film hole with improved cooling efficiency |
| US20140165734A1 (en) * | 2012-12-13 | 2014-06-19 | Surpass Industry Co., Ltd. | Amplifier-embedded pressure sensor |
| CN105841917A (en) * | 2016-03-16 | 2016-08-10 | 北京航天长征飞行器研究所 | Supersonic flow field total pressure measurement device and measurement method thereof |
-
2017
- 2017-04-18 CN CN201710251001.7A patent/CN106996848B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599531A (en) * | 1982-07-09 | 1984-01-18 | Hitachi Ltd | Pressure detecting device |
| CN201177544Y (en) * | 2008-03-14 | 2009-01-07 | 东南大学 | Blocking proof pressure pipe |
| US20140165734A1 (en) * | 2012-12-13 | 2014-06-19 | Surpass Industry Co., Ltd. | Amplifier-embedded pressure sensor |
| CN103398815A (en) * | 2013-08-01 | 2013-11-20 | 哈尔滨东安发动机（集团）有限公司 | Pressure probe |
| CN103452595A (en) * | 2013-09-25 | 2013-12-18 | 青岛科技大学 | Novel air film hole with improved cooling efficiency |
| CN105841917A (en) * | 2016-03-16 | 2016-08-10 | 北京航天长征飞行器研究所 | Supersonic flow field total pressure measurement device and measurement method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238511A (en) * | 2018-07-19 | 2019-01-18 | 中国航发沈阳发动机研究所 | A kind of temperature test detector probe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106996848B (en) | 2020-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106969872A (en) | A kind of pressure probe of use double-row hole gaseous film control | |
| CN106704047B (en) | EGR Venturi tubes | |
| CN106996848A (en) | A kind of pressure probe of use single row of holes gaseous film control | |
| CN107036758A (en) | A kind of air cooling high temperature dynamic pressure probe | |
| CN202631014U (en) | Three-curve-airfoil rectifying type air flow device | |
| CN208829533U (en) | Molybdenum electrode cooling jacket | |
| CN204944561U (en) | A kind of low pressure loss surpasses accelerometer measuring device | |
| CN105588950B (en) | A kind of ultralow wind velocity measurement system | |
| CN106762244A (en) | The measurement pipeline of engine EGR exhaust gas flow | |
| CN112967579B (en) | Experimental device for be used for studying annular fuel heat unbalance | |
| CN107907232A (en) | For measuring the temperature pressure combinations probe of turbomachinery interior flow field | |
| CN205388202U (en) | Air supply line is with dividing air cylinder | |
| CN205808612U (en) | A kind of wall static pressure measurement structure | |
| CN107167283A (en) | A kind of air cooling High Temperature and Stable State pressure probe | |
| CN207675248U (en) | Multistage shrinks combined rectifier | |
| CN208920821U (en) | A kind of blowing dryer | |
| CN207162749U (en) | Multiple branch circuit, low water drag fan coil collecting head | |
| CN108225613A (en) | A kind of blown using strut reduces the temperature probe of strut blockage effect | |
| WO2012122720A1 (en) | Parallel passage-typed flow controller | |
| TWI780717B (en) | Oxy-fuel burner for glass forehearths and gas supply apparatus thereof | |
| CN206299482U (en) | The measurement pipeline of engine EGR exhaust gas flow | |
| CN106885683A (en) | A kind of hole steady state pressure probe of hemispherical head 12 for measuring 3 D complex flow field | |
| CN209042302U (en) | A kind of annular header of boiler | |
| CN202631017U (en) | Plug-in flow measurement device applicable to low flow speed and large pipe diameter | |
| CN207556598U (en) | Flue gas monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |