CN203798530U - Icing wind tunnel wind velocity pipe - Google Patents
Icing wind tunnel wind velocity pipe Download PDFInfo
- Publication number
- CN203798530U CN203798530U CN201420194875.5U CN201420194875U CN203798530U CN 203798530 U CN203798530 U CN 203798530U CN 201420194875 U CN201420194875 U CN 201420194875U CN 203798530 U CN203798530 U CN 203798530U
- Authority
- CN
- China
- Prior art keywords
- pitot
- static
- tube
- icing
- static tube
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 230000003068 static effect Effects 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model discloses an icing wind tunnel wind velocity pipe. The icing wind tunnel wind velocity pipe comprises a wind velocity pipe body which is provided with a total pressure cavity, a static pressure cavity, a drainage hole thereof and a static pressure hole, and a power supply line which extends to a total pressure pipe cable joint through a plug. A spiral PTC armoured heating cable is wound close to the inner wall of the wind velocity pipe, wherein the spiral PTC armoured heating cable and the inner wall of the wind velocity pipe are welded into a whole body. According to the utility model, the heating cable rapidly improves the temperature of the wind velocity pipe body at large power; gradual power temperature reducing is carried out; the wind velocity pipe is always at a high temperature; ice can be melted, and the wind velocity pipe body can be prevented from icing; and pressure interference caused by the fact that a total pressure hole or the static pressure hole is blocked by crystal ice is avoided.
Description
Technical field
The utility model relates to a kind of anti-, deicing function that has, and can in icing tunnel easily freezes environment, gather that flow field is total, static pressure, for the device that resolves wind speed, is commonly referred to as pitot tube or Pitot-static tube.
Background technology
In wind-tunnel, each active section flow field is total, for control wind-tunnel, normal work has vital role to static pressure data.At present, the Pitot-static tube that wind-tunnel is used does not all possess anti-deicing function, as the section of freezing at icing tunnel is used, will cause normally gathering that flow field is total, static pressure lost efficacy because Pitot-static tube body freezes.For obtaining total, the static pressure in icing section flow field in icing tunnel, icing tunnel staff knows icing segment data by inference by the non-icing section of flow field data that record in icing tunnel conventionally.The data error that this method obtains is very large, makes the wind speed of the icing section of icing tunnel be difficult to accurate control.
Summary of the invention
The problem that can not work under the environment that freezes in order to overcome existing wind tunnel speed pipe, the utility model provides a kind of icing tunnel Pitot-static tube anti-, deicing function that has.This Pitot-static tube can normally gather under harsh icing environment that flow field is total, static pressure.
The utility model solves the technical scheme that its technical matters adopts: a kind of icing tunnel Pitot-static tube, comprises.Be provided with the Pitot-static tube body of stagnation pressure chamber, static pressure chamber and osculum thereof, baroport, and the power lead that extends to stagnation pressure tube cable splice by plug, it is characterized in that, be close on Pitot-static tube inwall, be wound with the spiral PTC armored heating cable being welding as one with Pitot-static tube inwall.
The utility model Pitot-static tube than the beneficial effect of common Pitot-static tube is:
The utility model adopt to conduct heat good high-strength hot stable silicon bronze as Pitot-static tube body, is close to Pitot-static tube spiral inner wall coiling PTC armored heating cable, and inserts scolder heating cables and Pitot-static tube inwall are welding as one to strengthen heat transfer.The load characteristic of PTC heating cables be temperature when low power large, when temperature is high, power reduces.When this Pitot-static tube need to only need to connect heating cables power supply icing environmental work, heating cables will improve rapidly pitot body temperature with relatively high power, and power reduces and makes Pitot-static tube remain on a higher temperature subsequently.So just can melt and prevent that Pitot-static tube body from freezing, avoid ice crystal to stop up the impression of pitot hole or baroport interference pressure.
This Pitot-static tube can freeze that section normally experience that flow field is total at icing tunnel, static pressure is calculated the icing tunnel section wind speed that freezes for For Solutions of Systems.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is heating wire structure and the welding schematic diagram of the utility model icing tunnel Pitot-static tube.
Fig. 2 is the utility model icing tunnel Pitot-static tube embodiment schematic diagram.
Fig. 3 is the cut-open view of Fig. 2.
Fig. 4 is figure tube head cut-open view.
In figure: 1. Pitot-static tube shell, 2. scolder, 3.PTC heating cables shell, 4.PTC heating cables insulation course; 5.PTC heating cables heart yearn, 6. Pitot-static tube, 7. wind-tunnel wall, 8. mounting disc; 9. joint protective cover, 10. pitot port, 11. osculums; 12. baroports, 13. power leads, 14. total, static pressure pressure inlets; 15. stagnation pressure chambeies, 16. plugs, 17. static pressure chambeies; 18.PTC heating cables, 19. stagnation pressure tubes, 20. cable splices.
Embodiment
In Fig. 1, icing tunnel Pitot-static tube, comprises.Be provided with the Pitot-static tube body of stagnation pressure chamber, static pressure chamber and osculum thereof, baroport, and the power lead that extends to stagnation pressure tube cable splice by plug.Be close on Pitot-static tube inwall, be wound with the spiral PTC armored heating cable being welding as one with Pitot-static tube inwall.PTC armored heating cable is the heating cables that can directly buy or customize on a kind of market, and its xsect has three layers, the heart yearns of innermost layer for generating heat in a large number after switching on, and the second layer is insulation course, outermost layer is stainless steel casing.PTC heating cables consists of 3 three layers of heart yearns 5, insulation course 4, shell from the inside to surface.Heart yearn 5 energisings just can be generated heat, and its resistance raises and can decline to some extent with temperature, and while just having switched on, heating power is maximum, and temperature has corresponding reduction after improving.The insulation course 4 that megohmite insulant is filled guarantees heating cables insulativity, and PTC heating cables shell 3 is manufactured by stainless steel material, to protect heating cables.Pitot-static tube shell 1 is used the high-strength hot stable silicon bronze with high thermal conductivity coefficient as material.Heating cables adopts the mode of soldering to be welded to Pitot-static tube shell 1 inwall, and heat energy efficient transmission is delivered to Pitot-static tube shell 1 outer wall that may be icing.
An icing tunnel Pitot-static tube embodiment as shown in Figure 2.Pitot-static tube 6 has pitot port 10, osculum 11 and circumferential six uniform baroports 12 at tube head, and pipe tail has joint protective cover 9, power lead 13 and total, static pressure pressure inlet 14.Pitot-static tube 6 enters the mounting hole wind-tunnel wall 7 from wind-tunnel interpolation, need make tube head over against carrying out flow path direction.Mounting disc 8 is connected with Pitot-static tube 6 with 1 dog screw by screw thread, is connected, thereby Pitot-static tube 6 is installed on wind-tunnel wall by 4 screws with wind-tunnel wall 7.Power lead 13 connects corresponding power supply, from pressure total, 14 outputs of static pressure pressure inlet, by proofed sleeve, exports to pressure transducer.
In Fig. 3 figure, in Pitot-static tube 6, be provided with stagnation pressure chamber 15, plug 16, static pressure chamber 17, stagnation pressure tube 19, cable splice 20 and PTC heating cables 18.Heating cables 18 is arranged intensive at the tube head that has pitot port 10, osculum 11 and baroport 12, to strengthen the anti-deicing effect of this part, guarantee to collect correct total, static pressure.Pitot-static tube 6 is more also lower to the requirement of anti-deicing effect away from the part of tube head, so heating cables 18 arranges that density is also less.Final stage is the cold junction of heating cables 18, is the section of heating not, needn't screw arrangement and welding, directly draw.
In Fig. 4, PTC heating cables 18 is close in the shape of a spiral Pitot-static tube 6 inwalls and is arranged.Before welding, use the frock of melanism to insert pitot port 10, osculum 11, baroport 12, postwelding takes out again, avoids scolder or heating cables to stop up pitot port 10, osculum 11, baroport 12.
When icing tunnel carries out icing wind tunnel test, connect Pitot-static tube 6 power supplys, heating cables 18 starts heating, makes Pitot-static tube 6 remain on a higher temperature.Pitot-static tube 6 tube heads will can not freeze, and Pitot-static tube 6 will normally gather that flow field is total, static pressure be passed to pressure transducer, finally resolve and obtain flow field wind speed.When icing tunnel is done non-icing operating mode wind tunnel test, disconnect Pitot-static tube 6 power supplys, Pitot-static tube 6 can be used as common Pitot-static tube and uses.
Claims (5)
1. an icing tunnel Pitot-static tube, comprise the Pitot-static tube body that is provided with stagnation pressure chamber, static pressure chamber and osculum thereof, baroport, and the power lead that extends to stagnation pressure tube cable splice by plug, it is characterized in that, be close on Pitot-static tube inwall, be wound with the spiral PTC armored heating cable being welding as one with Pitot-static tube inwall.
2. icing tunnel Pitot-static tube as claimed in claim 1, is characterized in that, PTC heating cables is from the inside to surface by heart yearn (5), insulation course (4), (3) three layers of formation of shell.
3. icing tunnel Pitot-static tube as claimed in claim 1, is characterized in that, heating cables adopts the mode of soldering to be welded to Pitot-static tube shell (1) inwall.
4. icing tunnel Pitot-static tube as claimed in claim 1; it is characterized in that; Pitot-static tube (6) has pitot port (10), osculum (11) and circumferential uniform six baroports (12) at tube head, and pipe tail has joint protective cover (9), power lead (13) and total, static pressure pressure inlet (14).
5. icing tunnel Pitot-static tube as claimed in claim 1, is characterized in that, heating cables (18) is arranged intensive at the tube head that has pitot port (10), osculum (11) and baroport (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194875.5U CN203798530U (en) | 2014-04-21 | 2014-04-21 | Icing wind tunnel wind velocity pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420194875.5U CN203798530U (en) | 2014-04-21 | 2014-04-21 | Icing wind tunnel wind velocity pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798530U true CN203798530U (en) | 2014-08-27 |
Family
ID=51380735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420194875.5U Expired - Lifetime CN203798530U (en) | 2014-04-21 | 2014-04-21 | Icing wind tunnel wind velocity pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798530U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543649A (en) * | 2016-06-26 | 2018-01-05 | 成都凯天电子股份有限公司 | Hot gas deicing stagnation pressure pick-up |
| CN108627672A (en) * | 2017-03-13 | 2018-10-09 | 霍尼韦尔国际公司 | Baffle arrangement in air data detector |
-
2014
- 2014-04-21 CN CN201420194875.5U patent/CN203798530U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543649A (en) * | 2016-06-26 | 2018-01-05 | 成都凯天电子股份有限公司 | Hot gas deicing stagnation pressure pick-up |
| CN107543649B (en) * | 2016-06-26 | 2023-10-24 | 成都凯天电子股份有限公司 | Hot air deicing total pressure sensor |
| CN108627672A (en) * | 2017-03-13 | 2018-10-09 | 霍尼韦尔国际公司 | Baffle arrangement in air data detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |