CN102661973A - Device for detecting properties of rotating heat pipe - Google Patents
Device for detecting properties of rotating heat pipe Download PDFInfo
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- CN102661973A CN102661973A CN2012101593344A CN201210159334A CN102661973A CN 102661973 A CN102661973 A CN 102661973A CN 2012101593344 A CN2012101593344 A CN 2012101593344A CN 201210159334 A CN201210159334 A CN 201210159334A CN 102661973 A CN102661973 A CN 102661973A
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- heat pipe
- rotating heat
- heating wire
- rotating
- copper conductor
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Abstract
The invention discloses a device for detecting properties of a rotating heat pipe. The device comprises a computer, a signal collecting card, a copper lead wire, and a plurality of heating wires, wherein the copper lead wire and the heating wires are axially and uniformly distributed along the rotating heat pipe and can be in contact with a pipe shell of the rotating heat pipe. The computer is connected with the signal collecting card through a data line; a loop is formed by each heating wire and the copper lead wire through the pipe shell of the rotating heat pipe; a supporting device is fixedly arranged at one ends of the heating wires and the copper lead wire, which are in contact with the pipe shell of the rotating heat pipe; and the other ends of the copper lead wire and the heating wires are respectively connected with the signal collecting card. The device provided by the invention has a simple structure and can rapidly, simply and conveniently detect the heat conduction properties of the rotating heat pipe at a high-speed rotation state.
Description
Technical field
The present invention relates to a kind of rotating heat pipe device for detecting performance, specifically, relate to a kind of pick-up unit that detects the rotating heat pipe heat transfer property that is applicable to.
Background technology
Heat pipe is a kind of high-performance heat transfer components, and it can be with a large amount of heats through its very little sectional area, transmit at a distance and need not additionaling power, so its range of application very extensively.Rotating heat pipe is that a kind of capillary force of utilizing centrifugal force to replace general heat pipe is ordered about the special heat pipe that working fluid refluxes to evaporator section from condensation segment; The heat exchange principle of typical rotating heat pipe is as shown in Figure 1; Shell inside is the taper work chamber that a cone angle is α; When rotating heat pipe rotated with rotational speed omega, generation was along the centrifugal force component ω of tube wall at the radius r place
2Rsin α and perpendicular to the centrifugal force component ω of tube wall
2Rcos α; When evaporator section is heated; Heat gets into working chamber through shell, causes that the evaporation of working fluid forms steam, and steam flows to condensation segment through the adiabatic section under differential pressure action; Be re-condensed into working fluid in the condensation segment release heat, drive refluxed to evaporator section at centrifugal force component ω 2rsin α.There is not the capillary limit of general heat pipe in rotating heat pipe, and sonic limit is similar with general heat pipe, and its vapor space is bigger, generally is not prone to sonic limit and entrainment limit.Rotating heat pipe is widely used under aero-engine turbine disk heat radiation, electric machine main shaft heat radiation and cutter heat radiation high speed rotating operating modes such as (like drill bits).Since the heat pipe manufacture craft relate to vacuumize, a plurality of links such as fluid injection, sealing; Wherein any one link goes wrong all that the opposite heat tube heat transfer property has very big influence; Therefore heat pipe will detect it before using, and whether possessed the good heat transfer performance to judge it.General heat pipe is in static heat exchange occasion, and its detection is comparatively convenient.And rotating heat pipe only just forms real heat transfer cycle when high speed rotating, detect in this state to be stranded much more difficult.Therefore, development and design can detect the device of rotating heat pipe heat transfer property under the high speed rotating state, is very necessary.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of simple in structure and can detect the rotating heat pipe device for detecting performance of the heat transfer property of the rotating heat pipe under the high speed rotating state quickly and easily.
The technical scheme that realizes the object of the invention is: a kind of rotating heat pipe device for detecting performance; It comprises computing machine and data acquisition card and all along rotating heat pipe axial distribution and copper conductor and some heating wire that can contact with the rotating heat pipe shell; Computing machine is connected with data acquisition card through data line; Every heating wire and copper conductor form a loop through the rotating heat pipe shell; Be fixed with bracing or strutting arrangement at heating wire with the end that copper conductor contacts with the rotating heat pipe shell, the other end of copper conductor 7 and heating wire is connected with data acquisition card respectively.
Further, described bracing or strutting arrangement is made up of support, base and some spring leafs, and the lower end of support is fixedly connected with base, and support is fixedly connected with some spring leafs, and described copper conductor and heating wire are separately fixed on the corresponding spring leaf.
Further, described heating wire is a nickel filament.
After having adopted technique scheme, during rotating heat pipe work, its inner steam is in state of saturation; And the temperature of steam is depressed at certain saturated vapour and is also confirmed, so everywhere vapor (steam) temperature difference is very little in the rotating heat pipe pipe, can think that promptly the temperature of each locus equates in the rotating heat pipe working chamber; Because the high leakproofness and the high rotating speed of rotating heat pipe, directly measuring the rotating heat pipe temperature inside is the comparison difficulty, adopts the case temperature of measuring the rotating heat pipe difference to measure indirectly; The difference of the temperature of difference is more little; Explain that the rotating heat pipe heat transfer property is good more, in rotating heat pipe when work,, some heating wire that axially are uniformly distributed with along rotating heat pipe pass to data acquisition card with the shell thermoelectrical potential signal of rotating heat pipe difference; Data acquisition card is data with these thermoelectrical potential conversion of signals and passes to computing machine; Temperature survey software through on computers carries out analyzing and processing, obtains the temperature at different coordinates place, and the temperature through the diverse location place is poor then; Estimate the isothermal of rotating heat pipe, thereby reach the purpose that detects the rotating heat pipe heat transfer property; Heating wire adopts nickel filament, and nickel filament has higher resistivity, and surface oxidation-resistant property is good; The temperature rank that can bear is high, and higher intensity is at high temperature arranged, and makes rotating heat pipe when rotated; Heating wire can be owing to long high temperature rupture, and influence detects effect.
Description of drawings
Fig. 1 is the heat exchange schematic diagram of rotating heat pipe;
Fig. 2 is the structural representation of rotating heat pipe device for detecting performance of the present invention.
Embodiment
For content of the present invention is expressly understood more easily, below according to specific embodiment and combine accompanying drawing, the present invention is done further detailed explanation,
As shown in Figure 2; A kind of rotating heat pipe device for detecting performance; It comprises computing machine 9 and data acquisition card 10 and all along rotating heat pipe 2 axial distribution and copper conductor 7 and some heating wire 8 that can contact with rotating heat pipe 2 shells; Computing machine 9 is connected with data acquisition card 10 through data line 11; Every heating wire 8 forms a loop with copper conductor 7 through rotating heat pipe 2 shells, is fixed with bracing or strutting arrangement with copper conductor 7 with the end that rotating heat pipe 2 shells contact at heating wire 8, and the other end of copper conductor 7 and heating wire 8 is connected with data acquisition card 10 respectively.
Bracing or strutting arrangement is made up of support 5, base 6 and some spring leafs 4, and the lower end of support 5 is fixedly connected with base 6, and support 5 is fixedly connected with some spring leafs 4, and described copper conductor 7 is separately fixed on the corresponding spring leaf 4 with heating wire 8.
Principle of work of the present invention is following:
During rotating heat pipe 2 work, its inner steam is in state of saturation, and the temperature of steam is depressed at certain saturated vapour and also confirmed; Therefore everywhere vapor (steam) temperature difference is very little in rotating heat pipe 2 pipes, can think that promptly the temperature of each locus equates the high leakproofness of rotating heat pipe 2 and high rotating speed in rotating heat pipe 2 working chambers; Directly measuring rotating heat pipe 2 temperature inside is comparison difficulties; Adopt the case temperature of measuring rotating heat pipe 2 differences to measure indirectly, the difference of the temperature of difference is more little, explains that rotating heat pipe 2 heat transfer properties are good more; During rotating heat pipe 2 work; The some heating wire 8 that axially are uniformly distributed with along rotating heat pipe 2 pass to data acquisition card 10 with the thermoelectrical potential signal of rotating heat pipe 2 differences, and data acquisition card 10 is data with these thermoelectrical potential conversion of signals and passes to computing machine 9, carries out analyzing and processing through the temperature survey software on computing machine 9; Obtain the temperature at different coordinates place; Temperature through the diverse location place is poor then, estimates the isothermal of rotating heat pipe 2, thereby reaches the purpose that detects rotating heat pipe 2 heat transfer properties; Heating wire 8 adopts nickel filament, and nickel filament has higher resistivity, and surface oxidation-resistant property is good; The temperature rank that can bear is high, and higher intensity is at high temperature arranged, and makes rotating heat pipe 2 when rotated; Heating wire 8 can not detect effect thereby influence owing to long high temperature ruptures.
Use step of the present invention is following:
1, make rotating heat pipe 2 begin to rotate and reach stabilized (steady-state) speed, in the rotary course, heating wire 8 front ends keep stable with rotating heat pipe 2 shells with copper conductor 7 front ends and contact under the elastic reaction of spring leaf 4;
2, the evaporator section at rotating heat pipe 2 uses electric furnace heating wire 1 to its heating; And the temperature survey software on the startup computing machine 9; At this moment; The shell of heating wire 8 front ends and rotating heat pipe 2 forms the thermal center point; Circuit transmission to the data acquisition card 10 that its thermoelectrical potential signal forms through heating wire 8 and copper conductor 7 and rotating heat pipe 2, data collecting card 10 are data with the thermoelectrical potential conversion of signals and are sent to computing machine 9 through data line, can obtain the rotating heat pipe temperature of different coordinate points vertically through the temperature survey software on the computing machine 9.
3, the temperature through the different coordinate points of software analysis is poor, can estimate the isothermal of rotating heat pipe 2, and the difference of difference temperature is more little, explains that rotating heat pipe 2 heat transfer properties are good more.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. rotating heat pipe device for detecting performance; It is characterized in that: it comprises computing machine (9) and data acquisition card (10) and the copper conductor (7) and the some heating wire (8) that all axially are uniformly distributed with and can contact with rotating heat pipe (2) shell along rotating heat pipe (2); Computing machine (9) is connected with data acquisition card (10) through data line (11); Every heating wire (8) and copper conductor (7) form a loop through rotating heat pipe (2) shell; Be fixed with bracing or strutting arrangement with copper conductor (7) with the end that rotating heat pipe (2) shell contacts at heating wire (8), the other end of copper conductor (7) and heating wire (8) is connected with data acquisition card (10) respectively.
2. rotating heat pipe device for detecting performance according to claim 1; It is characterized in that: described bracing or strutting arrangement is made up of support (5), base (6) and some spring leafs (4); The lower end of support (5) is fixedly connected with base (6); Support (5) is fixedly connected with some spring leafs (4), and described copper conductor (7) and heating wire (8) are separately fixed on the corresponding spring leaf (4).
3. rotating heat pipe device for detecting performance according to claim 1 is characterized in that: described heating wire (8) is a nickel filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101593344A CN102661973A (en) | 2012-05-22 | 2012-05-22 | Device for detecting properties of rotating heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101593344A CN102661973A (en) | 2012-05-22 | 2012-05-22 | Device for detecting properties of rotating heat pipe |
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| Publication Number | Publication Date |
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| CN102661973A true CN102661973A (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101593344A Pending CN102661973A (en) | 2012-05-22 | 2012-05-22 | Device for detecting properties of rotating heat pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279593A (en) * | 2013-04-26 | 2013-09-04 | 中山大学 | Method of computer for analyzing performance of heat pipe |
| CN108981433A (en) * | 2018-08-16 | 2018-12-11 | 中国矿业大学 | A kind of heating of rotating heat pipe, cooling and safety device |
| CN112414682A (en) * | 2019-08-05 | 2021-02-26 | 苏州方桥机电科技股份有限公司 | Heat pipe abnormal sound detection device and detection method thereof |
-
2012
- 2012-05-22 CN CN2012101593344A patent/CN102661973A/en active Pending
Non-Patent Citations (4)
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| 何川 等: "平行轴旋转热管传热性能的实验", 《重庆大学学报》 * |
| 印彩霞 等: "用于生物反应器的旋转热管传热性能的研究", 《热能动力工程》 * |
| 张琳 等: "台阶型旋转热管传热性能的试验研究", 《石油化工高等学校学报》 * |
| 魏静微 等: "高转差异步发电机转子的三维温度场及旋转热管的应用", 《电机与控制学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279593A (en) * | 2013-04-26 | 2013-09-04 | 中山大学 | Method of computer for analyzing performance of heat pipe |
| CN108981433A (en) * | 2018-08-16 | 2018-12-11 | 中国矿业大学 | A kind of heating of rotating heat pipe, cooling and safety device |
| CN112414682A (en) * | 2019-08-05 | 2021-02-26 | 苏州方桥机电科技股份有限公司 | Heat pipe abnormal sound detection device and detection method thereof |
| CN112414682B (en) * | 2019-08-05 | 2024-04-26 | 苏州方桥机电科技股份有限公司 | Heat pipe abnormal sound detection device and detection method thereof |
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Application publication date: 20120912 |