CN105203545A - Observation system and method of spray cooling liquid film pattern under unfavorable high overload - Google Patents
Observation system and method of spray cooling liquid film pattern under unfavorable high overload Download PDFInfo
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- CN105203545A CN105203545A CN201510580436.7A CN201510580436A CN105203545A CN 105203545 A CN105203545 A CN 105203545A CN 201510580436 A CN201510580436 A CN 201510580436A CN 105203545 A CN105203545 A CN 105203545A
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Abstract
The invention discloses an observation system and method of spray cooling liquid film pattern under unfavorable high overload. By observing the thickness of a cooling surface liquid film and a formation process and flow pattern of the liquid film when liquid drops hit against walls in a spray cooling test under the unfavorable high overload environment, a spray cooling model and a heat transfer rule under the unfavorable high overload are revealed. By improving pressure sources and a waste liquor recovery part of a spray cooling system, the anti-overload ability is achieved, the stable working medium flow performed under the unfavorable overload is ensured, and the spray cooling and the waste liquid recovery are finished. In addition, by combining an anti-overload spray cooling observation system and a centrifugal testing machine, and by controlling angles of installation of anti-overload spray cooling observation system and the centrifugal testing machine, different unfavorable high overload environments can be simulated, observation of the spray cooling liquid film is realized under different high overload environments, a cooling principle further analyzed under the unfavorable high overload and influences on cooling under the unfavorable high overload environment on the basis of obtaining data and phenomena are achieved.
Description
Technical field
The present invention relates to a kind of unfavorable high overload misting cooling liquid film Appearance View examining system and method, be applicable to inspection and misting cooling analytic model and phase-change heat transfer criterion under improving unfavorable high overload.
Background technology
Effect aerodynamic force aboard and the overload being called aircraft with joint efforts with the ratio of aircraft gravity of motor power, the size that aircraft can bear overload weighs the important parameter of air maneuver.The generation of overload, mainly due to the lift of wing, works as flat bank, or during somersaults, the lift that wing produces is greater than gravity; Work as airplane nose down, or when leveling off after climbing fast, the lift that wing produces is less than gravity, in other words aircraft all has overload generation after making high maneuver awing, the maneuver Shaoxing opera done is strong, the overload produced is larger, therefore unavoidablely in aerial mission can produce the even unfavorable high overload environment of overload.In general, we are main it is considered that overload is for the operator of aircraft i.e. the impact of pilot, but very important be transship not only airplane motion to be had an impact, also can impact airplane environment control part.
Plane environmental control system ensures to have in aircraft cockpit and equipment compartment occupant and equipment normally to work the package unit of required suitable environmental baseline.Plane environmental control system comprises cabin air supply and air distribution, cockpit pressure control, temperature control, humid control etc.Wherein, temperature control system reasonably controls hot-air and cold air, balances the thermal force of passenger cabin, to reach the object controlling cabin temperature.The more important thing is, along with the development of science and technology, present generation aircraft air environment increases day by day, also a large amount of heat can be produced, this not only makes the temperature environment of electronic equipment worsen, and also has a great impact, therefore must cool electronic equipment cabin temperature.The cooling of electronic equipment, because consumed power is large, requirement condition is high, is a major issue during Aircraft Cabin Temperature controls.In order to ensure that aircraft safety flies, need all kinds of thermals source to taking electronic equipment as representative to cool, spray cooling is conventional cooling technology.
Can based on above 2 points, in an overload condition, probe into misting cooling and effectively carry out becoming crucial problem, particularly under the comparatively large namely unfavorable high overload environment of overloading acceleration, can misting cooling well carry out becoming good problem to study.Different from uphole equipment, aircraft is when doing maneuvering flight (as orbit), and airborne thermal controls apparatus can overturn with airplane motion, makes nozzle-axis and gravity direction at an angle, and this angle is defined as spray angle temporarily; Aircraft when change of flight state (as do acceleration or deceleration flight), the impact that airborne thermal controls apparatus will be subject to from different directions transships again.For spray cooling system, the influence of the liquid film heat exchanging that heat-transfer surface adheres to is remarkable.Be the change of spray angle or the existence of added force of inertia all can heat exchanging on the surface thickness of liquid film, flow velocity, nowed forming etc. have an impact, and then affect the heat exchange property of misting cooling.
Summary of the invention
In view of the above problems, for assessment airborne circumstance is on the impact of misting cooling heat exchange, the present invention proposes a kind of unfavorable high overload misting cooling liquid film morphologic observation system, for inspection with improve misting cooling economics analysis model and phase-change heat transfer criterion under unfavorable high overload.
According to an aspect of the present invention, overload-resistant misting cooling recording geometry and centrifugal testing machine are combined, by improving the pressure source part of spray cooling system, devil liquor recovery part etc. makes it have anti-overload ability, ensure that observation can effectively be carried out; By the setting angle of control observation system and testing machine, simulate different unfavorable high overload environment, utilize recording geometry to obtain forming process and nowed forming that the local thickness of liquid film of different observation station and drop clash into liquid film after wall, thus inspection and misting cooling economics analysis model and phase-change heat transfer criterion under improving unfavorable high overload.
According to an aspect of the present invention, propose a kind of unfavorable high overload misting cooling liquid film form observation procedure, it is characterized in that comprising:
Overload-resistant pressure source part, provides stable working medium atomizing pressure for ensureing under high overload environment;
Misting cooling cavity segment, for carrying out misting cooling heat exchange and Recycling of waste liquid;
Liquid film observation and measure portion, clash into forming process and the nowed forming of liquid film after wall for obtaining the local thickness of liquid film of different observation station and drop;
Centrifugal test platform, for providing various unfavorable high overload acceleration environment;
Unfavorable high overload observation procedure, the unfavorable high overload environment needed for providing observation station and the spraying observation carried out under various unfavorable high overload environment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of unfavorable high overload misting cooling liquid film morphologic observation system according to an embodiment of the invention.
Fig. 2 (a), 2 (b), 2 (c) are for illustration of the workflow of unfavorable high overload environmental observation system according to an embodiment of the invention.
Fig. 3 is the workflow diagram of overload-resistant pressure source according to an embodiment of the invention.
Fig. 4 is the workflow diagram of base Mead-Bauer recovery system according to an embodiment of the invention.
Fig. 5 is liquid film according to an embodiment of the invention observation and the workflow diagram measured.
Embodiment
One object of the present invention, be to provide the misting cooling liquid film form observation procedure under a kind of unfavorable high overload, to be clashed into forming process and the nowed forming of liquid film after wall by cooling surface thickness of liquid film and drop in misting cooling observation under the unfavorable high overload environment of observation, determine the misting cooling model under unfavorable high overload environment and heat transfer criterion.The program is by improving the pressure source part of spray cooling system, devil liquor recovery part etc. makes it have anti-overload ability, ensure that this system can carry out stable Working fluid flow, misting cooling and devil liquor recovery under overload environment, and then ensure that observation is carried out smoothly; By overload-resistant misting cooling recording geometry and centrifugal testing machine are combined, by the setting angle of control observation system and testing machine, simulate different unfavorable high overload environment, realize the observation of the misting cooling liquid film under different high overload environment, on the basis obtaining data and phenomenon, obtain analyzing further cooling jig under unfavorable high overload and unfavorable high overload environment to the impact of cooling.
Effect aerodynamic force aboard and the overload being called aircraft with joint efforts with the ratio of aircraft gravity of motor power, the size that aircraft can bear overload weighs the important parameter of air maneuver.Aircraft all has overload and produces after making high maneuver awing, the maneuver Shaoxing opera done is strong, and the overload of generation is larger, therefore unavoidablely in aerial mission can produce the even unfavorable high overload environment of overload.In general, we are main it is considered that overload is for the operator of aircraft i.e. the impact of pilot, but very important be transship not only airplane motion to be had an impact, also can impact airplane environment control part.Plane environmental control system ensures to have in aircraft cockpit and equipment compartment occupant and equipment normally to work the package unit of required suitable environmental baseline.Wherein, temperature control system is a part important in aircraft environment control system, and it can reasonably control hot-air and cold air, balances the thermal force of passenger cabin, to reach the object controlling cabin temperature.The more important thing is, along with the development of science and technology, present generation aircraft air environment increases day by day, also a large amount of heat can be produced, this not only makes the temperature environment of electronic equipment worsen, and also has a great impact, therefore must cool electronic equipment cabin temperature.The cooling of electronic equipment, because consumed power is large, requirement condition is high, is a major issue during Aircraft Cabin Temperature controls.In order to ensure that aircraft safety flies, need all kinds of thermals source to taking electronic equipment as representative to cool, spray cooling is conventional cooling technology.Can based on above 2 points, in an overload condition, probe into misting cooling and effectively carry out becoming crucial problem, particularly under the comparatively large namely unfavorable high overload environment of overloading acceleration, can misting cooling well carry out becoming good problem to study.Different from uphole equipment, aircraft is when doing maneuvering flight (as orbit), and airborne thermal controls apparatus likely overturns with airplane motion, makes nozzle-axis and gravity direction at an angle, and this angle is defined as spray angle temporarily; Aircraft when change of flight state (as do acceleration or deceleration flight), the impact that airborne thermal controls apparatus will be subject to from different directions transships again.For spray cooling system, the influence of the liquid film heat exchanging that heat-transfer surface adheres to is remarkable.Be the change of spray angle or the existence of added force of inertia all can heat exchanging on the surface thickness of liquid film, flow velocity, nowed forming etc. have an impact, and then affect the heat exchange property of misting cooling.
The present invention proposes a kind of misting cooling liquid film morphologic observation method under unfavorable high overload, on the impact of cooling, strong support is provided for assessing the impact of airborne circumstance on misting cooling heat exchange for probing into misting cooling cooling principle and unfavorable high overload environment under unfavorable high overload.According to an aspect of the present invention, provide a kind of analog observation system of unfavorable high overload environment, for simulating the unfavorable high overload environment of expection.As shown in Figure 1, according to one embodiment of present invention, a kind of analog observation system of unfavorable high overload environment comprises:
Overload-resistant pressure source part (101,102), for being provided in the stable working medium atomizing pressure under high overload environment; Misting cooling cavity segment (103), for carrying out misting cooling heat exchange and Recycling of waste liquid; Liquid film observation and measure portion (104), clash into forming process and the nowed forming of liquid film after wall for obtaining the local thickness of liquid film of different observation station and drop; Centrifugal test platform (105,111,107), for providing various unfavorable high overload acceleration environment; Unfavorable high overload observation part, the unfavorable high overload environment needed for providing observation station and the spraying observation carried out under various unfavorable high overload environment.According to one embodiment of present invention, the observation of overload-resistant pressure source part (101,102), misting cooling cavity segment (103), liquid film is arranged on the cantilever (111) of centrifugal test platform with measure portion (104) all simultaneously.As shown in Figure 2, by nozzle (202), spraying chamber wall (203) and the setting angle of thermal source (204) on centrifugal testing machine pivoted arm (205) in adjustment misting cooling cavity segment (103), control angle β between spray direction θ and overloading acceleration a, be similar to and realize the unfavorable overload of level, vertical overweight unfavorable overload and vertical weightless unfavorable overload environmental simulation; Angle between definition overloading acceleration and resultant acceleration is β; Between spray direction and pivot arm, angle is established angle θ; Angle between resultant acceleration and thin film drainage direction is transship angle β; As shown in Fig. 2 (a), when θ=-90 °, during β ≈ 0 °, the unfavorable high overload environment of dummy level; As shown in Fig. 2 (b), as θ=180 °-β, β ≈-90 °, simulate vertical overweight unfavorable high overload environment; As shown in Fig. 2 (c), as θ=β, β ≈ 90 °, simulate vertical weightless unfavorable high overload environment.As shown in Figure 3, the overload-resistant pressure source part of a kind of overload-resistant misting cooling recording geometry according to an embodiment of the invention comprises: gas cylinder (301), pressure valve (302), safety valve (303), airbag chamber (304), movable seal face (305), cooling working medium tank (306), non-return valve (307), flowmeter (308), filtrator (309).Under high overload environment, stable working medium atomizing pressure is provided for ensureing.
As shown in Figure 4, misting cooling part according to an embodiment of the invention comprises: entering chamber feed pipe (401), spraying chamber (402), nozzle (403), accompanying hot cloche (404), thermal source (405), vacuum pump (406), waste liquid tank (407), for carrying out misting cooling heat exchange and Recycling of waste liquid; Liquid film observation and measure portion, liquid film observation comprising with measure portion (104): the confocal displacement transducer of dispersion (507), high-speed camera instrument+micro magnifier head (505), green laser cold light source (506), clashes into forming process and the nowed forming of liquid film after wall for obtaining the local thickness of liquid film of different observation station and drop.
In according to one embodiment of present invention, as shown in Figure 3, as the pressure-air from gas cylinder (301), the airbag chamber (304) of gas-liquid tank is entered with certain flow through pressure valve (302), cavity pressure is controlled by pressure valve (302) and safety valve (303) by set pressure, inflatable air bag chamber (304) interior gas push movable seal face (305) is mobile, and then the liquid working substance promoted in cooling working medium chamber (306) flows out, the pressure that cooling working medium is subject to is the extruding due to movable seal face (305), therefore not by unfavorable high overload environmental impact, can flow out according to set pressure is stable, working medium is through non-return valve (307) anti-backflow, measure for flow quantity through flowmeter (308), eventually pass through filter (309) despumation, for misting cooling part provides the cooling working medium of needs, overcome the drawback be provided directly in by pump under unfavorable high overload environment.
According to one embodiment of present invention, as shown in Figure 4, the stable cooling working medium (401) provided by overload-resistant pressure source is sprayed at through spraying nozzle (403) and produces heat exchange with thermal source (405) surface collision in spraying chamber (402) and cool, spraying chamber (402) interior heat exchange after cooling working medium companion hot cloche (404) effect under spray chamber (402) bottom collection, simultaneously, electrically heated glass is installed in spraying cavity both sides, to ensure to take the visual field in the long enough time not by the interference being splashed to drop on heating glass, improve observation and shooting quality.The suction of vacuum pump (406) makes bottom, spraying chamber (402) produce negative pressure, therefore no matter outside which kind of is unfavorable high overload environment, working medium after all can making heat exchange is sucked back in fluid reservoir (407), realize waste collection, its suction position is relevant with simulated unfavorable high overload environment.
According to one embodiment of present invention, as shown in Figure 5, cooling working medium (501) sprays out through spraying nozzle (502), droplet collision thermal source (504) wall forms liquid film process and is taken by high-speed camera instrument+micro magnifier head (505), green laser cold light source (506) makes shooting more clear while providing light source, use the confocal displacement transducer of dispersion (507), obtain the local thickness of liquid film observed quantity data of different observation station.
Compared with traditional misting cooling liquid film observation procedure, advantage of the present invention comprises:
(1) pressure source part uses controllable air pressure to extrude movable seal plate in gas-liquid tank, its extruding for working medium is utilized to make the stable outflow of working medium, no matter be in which kind of unfavorable high overload environment around, all can not be affected, stablizing of further guarantee spraying, compared with the method for traditional direct employing pump, avoid the impact of high overload environment for pump rotation etc.;
(2) working medium after devil liquor recovery part adopts cloche collection heat exchange to complete, bottom spraying chamber, utilize vacuum pump to aspirate the negative pressure produced is drawn onto waste liquid in fluid reservoir, directly compared with the method adopting pump to aspirate, avoid the impact of high overload environment for pump rotation etc.;
(3) liquid film observation installs electrically heated glass with measure portion in cavity both sides of spraying, to ensure to take the visual field in the long enough time not by the interference being splashed to drop on heating glass, improve observation and shooting quality, the confocal displacement transducer of dispersion is used automatically to obtain the local thickness of liquid film observed quantity data of different observation station, the difficulty reducing test ensure that reliability simultaneously, uses green laser cold light source to ensure to photograph picture clearly;
(4) pressure source part, misting cooling part, liquid film observation are all arranged on centrifugal testing machine with measure portion, can simply by the setting angle of adjustment misting cooling part on centrifugal testing machine pivoted arm, control angle between spray direction and overloading acceleration, be similar to and realize the unfavorable overload of level, vertical overweight unfavorable overload and vertical weightless unfavorable overload environmental simulation, simple to operate;
Beneficial effect of the present invention
Pressure source part uses controllable air pressure to extrude movable seal plate in gas-liquid tank, its extruding for working medium is utilized to make the stable outflow of working medium, no matter be in which kind of unfavorable high overload environment around, all can not be affected, stablizing of further guarantee spraying, compared with the method for traditional direct employing pump, avoid the impact of high overload environment for pump rotation etc.;
Working medium after devil liquor recovery part adopts cloche collection heat exchange to complete, bottom spraying chamber, utilize vacuum pump to aspirate the negative pressure produced is drawn onto waste liquid in fluid reservoir, directly compared with the method adopting pump to aspirate, avoid the impact of high overload environment for pump rotation etc.;
Liquid film observation installs electrically heated glass with measure portion in cavity both sides of spraying, to ensure to take the visual field in the long enough time not by the interference being splashed to drop on heating glass, improve observation and shooting quality, the confocal displacement transducer of dispersion is used automatically to obtain the local thickness of liquid film observed quantity data of different observation station, the difficulty reducing test ensure that reliability simultaneously, uses green laser cold light source to ensure to photograph picture clearly;
The observation of pressure source part, misting cooling part, liquid film is all arranged on centrifugal testing machine with measure portion, can simply by the setting angle of adjustment misting cooling part on centrifugal testing machine pivoted arm, control angle between spray direction and overloading acceleration, be similar to and realize the unfavorable overload of level, vertical overweight unfavorable overload and vertical weightless unfavorable overload environmental simulation, simple to operate.
Claims (10)
1. a unfavorable high overload misting cooling liquid film Appearance View examining system, the unfavorable high overload environment needed for providing observation station and the spraying observation carried out under various unfavorable high overload environment, is characterized in that comprising:
Overload-resistant pressure source part, by gas cylinder (101) and pressure-adjustable cooling working medium tank (102), provides stable liquid working substance spray atomization pressure for ensureing under high overload environment;
Misting cooling cavity segment (103,502,403), for carrying out misting cooling heat exchange and interim collection spraying waste liquid;
Spraying waste liquid initiatively recovery section, for reclaiming spraying waste liquid;
Liquid film observation and measure portion (104), clash into forming process and the nowed forming of liquid film after wall for obtaining the local thickness of liquid film of different observation station and drop;
Temperature signal measurement part (106), for recording different observation station temperature signal;
Centrifugal test platform (105,111,107), for installing described overload-resistant pressure source part (101 and 102), misting cooling cavity segment, spraying waste liquid initiatively recovery section (108 and 109), liquid film observation (104), temperature signal measurement part (106).
2. unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, is characterized in that:
Described centrifugal test platform comprises centrifugal motor (105), pivoted arm (111) and balancing weight (107),
Wherein
Centrifugal motor rotates for driving pivoted arm, to provide various unfavorable high overload acceleration environment,
Counterweight (107) is used for balancing pivoted arm weight and makes spin stabilization, ensures observation quality,
Spraying waste liquid initiatively recovery section comprises vacuum pump (108) and waste liquid tank (109).
3. unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, is characterized in that:
Misting cooling cavity segment comprises the nozzle (202) be arranged on centrifugal testing machine pivoted arm (205), spraying chamber wall (203) and thermal source (204),
Wherein
By the setting angle of adjustment misting cooling cavity segment, control angle β between spray direction θ and overloading acceleration a, be similar to and realize the unfavorable overload of level, vertical overweight unfavorable overload and vertical weightless unfavorable overload environmental simulation, comprising:
When θ=-90 °, during β ≈ 0 °, the unfavorable high overload environment of dummy level;
As θ=180 °-β, β ≈-90 °, simulate vertical overweight unfavorable high overload environment;
As θ=β, β ≈ 90 °, simulate vertical weightless unfavorable high overload environment.
4. unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, is characterized in that:
Overload-resistant pressure source part (101 and 102) comprising: gas cylinder (301), pressure valve (302), safety valve (303), airbag chamber (304), movable seal face (305), cooling working medium tank (306), non-return valve (307), flowmeter (308), filtrator (309)
Wherein,
From the pressure-air of gas cylinder (301), enter the inflatable air bag chamber (304) on cooling working medium tank (306) top through pressure valve (302) with certain flow,
Inflatable air bag chamber (304) interior pressure is controlled by pressure valve (302) and safety valve (303) by set pressure, inflatable air bag chamber (304) interior gas push movable seal face (305) is mobile, and then the liquid working substance promoted in cooling working medium tank (306) flows out
The pressure that cooling working medium is subject to is the extruding due to movable seal face (305), therefore not by unfavorable high overload environmental impact, can flow out according to set pressure is stable,
Working medium, through non-return valve (307) anti-backflow, is measured for flow quantity through flowmeter (308), is eventually passed through filter (309) despumation, provide the cooling working medium of the steady pressure of needs for misting cooling part.
5. unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, is characterized in that:
Misting cooling cavity segment comprises: enter chamber feed pipe (401), spraying chamber (402), nozzle (403), accompany hot cloche (404), thermal source (405), vacuum pump (406), waste liquid tank (407)
Wherein,
Enter chamber feed pipe (401) and spraying nozzle (403) for the stable cooling working medium from overload-resistant pressure source part being sprayed at the hot side (408) in spraying chamber (402), collide with thermal source (405) surface (408) and produce cooling effect
Accompany hot cloche (404) for the cooling working medium of bottom collection in spraying chamber (402) after heat exchange in spraying chamber (402),
Vacuum pump (406), for producing negative pressure in spraying chamber (402) bottom, makes the working medium after heat exchange be sucked back in waste liquid tank (407), realizes waste collection.
6. unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, is characterized in that:
Liquid film observation comprising with measure portion (104): the confocal displacement transducer of dispersion (507), high-speed camera instrument+micro magnifier head (505), green laser cold light source (506),
Wherein,
Cooling working medium (501) sprays out through nozzle (502), droplet collision thermal source (504) wall forms liquid film process and is taken by high-speed camera instrument+micro magnifier head (505), green laser cold light source (506) makes shooting more clear while providing light source, use the confocal displacement transducer of dispersion (507), obtain the local thickness of liquid film observed quantity data of different observation station.
7., based on the unfavorable high overload misting cooling liquid film form observation procedure of unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, it is characterized in that:
Described centrifugal test platform comprises centrifugal motor (105), pivoted arm (111) and balancing weight (107), and spraying waste liquid initiatively recovery section comprises vacuum pump (108) and waste liquid tank (109),
And described method comprises:
Rotate with centrifugal driven by motor pivoted arm, to provide various unfavorable high overload acceleration environment,
Make spin stabilization by counterweight (107) balance pivoted arm weight, ensure observation quality.
8., based on the unfavorable high overload misting cooling liquid film form observation procedure of unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, it is characterized in that:
Misting cooling cavity segment comprises the nozzle (202) be arranged on centrifugal testing machine pivoted arm (205), spraying chamber wall (203) and thermal source (204),
And described method comprises:
By the setting angle of adjustment misting cooling cavity segment, control angle β between spray direction θ and overloading acceleration a, be similar to and realize the unfavorable overload of level, vertical overweight unfavorable overload and vertical weightless unfavorable overload environmental simulation, comprising:
When θ=-90 °, during β ≈ 0 °, the unfavorable high overload environment of dummy level;
As θ=180 °-β, β ≈-90 °, simulate vertical overweight unfavorable high overload environment;
As θ=β, β ≈ 90 °, simulate vertical weightless unfavorable high overload environment.
9., based on the unfavorable high overload misting cooling liquid film form observation procedure of unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, it is characterized in that:
Overload-resistant pressure source part (101 and 102) comprising: gas cylinder (301), pressure valve (302), safety valve (303), airbag chamber (304), movable seal face (305), cooling working medium tank (306), non-return valve (307), flowmeter (308), filtrator (309)
And described method comprises:
The pressure-air from gas cylinder (301) is made to enter the inflatable air bag chamber (304) on cooling working medium tank (306) top through pressure valve (302) with certain flow,
Inflatable air bag chamber (304) interior pressure is controlled by set pressure pressure valve (302) and safety valve (303), mobile by inflatable air bag chamber (304) interior gas push movable seal face (305), and then the liquid working substance promoted in cooling working medium tank (306) flows out
By the extruding of movable seal face (305), cooling working medium is under pressure, thus the pressure that cooling working medium is subject to also can not flow out according to set pressure is stable by unfavorable high overload environmental impact,
Prevent cooling working medium from refluxing with non-return valve (307),
The confession flow quantity in cooling working medium is measured with flowmeter (308),
The impurity in cooling working medium is got rid of, for misting cooling part provides the cooling working medium with required steady pressure with filtrator (309).
10., based on the unfavorable high overload misting cooling liquid film form observation procedure of unfavorable high overload misting cooling liquid film Appearance View examining system according to claim 1, it is characterized in that:
Misting cooling cavity segment comprises into chamber feed pipe (401), spraying chamber (402), nozzle, the hot cloche of companion (404), thermal source (405), vacuum pump (406), waste liquid tank (407)
And described method comprises:
With entering chamber feed pipe (401) and nozzle, the stable cooling working medium from overload-resistant pressure source part is sprayed on the hot side (408) in spraying chamber (402), collide with thermal source (405) surface (408) and produce cooling effect
With the bottom collection cooling working medium spraying chamber (402) in heat exchange after of the hot cloche of companion (404) in spraying chamber (402),
Produce negative pressure with vacuum pump (406) in spraying chamber (402) bottom, the working medium after heat exchange is sucked back in waste liquid tank (407), realizes waste collection.
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| CN105203545B (en) | 2018-02-09 |
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