CN107044789B - A kind of porous constant-current stabilizer heat pipe - Google Patents
A kind of porous constant-current stabilizer heat pipe Download PDFInfo
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- CN107044789B CN107044789B CN201710267200.7A CN201710267200A CN107044789B CN 107044789 B CN107044789 B CN 107044789B CN 201710267200 A CN201710267200 A CN 201710267200A CN 107044789 B CN107044789 B CN 107044789B
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- current stabilizer
- condensation
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- 238000001704 evaporation Methods 0.000 claims abstract description 25
- 230000008020 evaporation Effects 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 239000011148 porous material Substances 0.000 claims description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
Abstract
The present invention provides a kind of heat pipes, including evaporation collector, condensation collector, tedge and return pipe, the tedge is connected with evaporation collector and condensation collector, the evaporation collector is located at lower part, the condensation collector is located at top, and the fluid enters condensation collector by tedge in evaporation collector interior suction thermal evaporation, it is condensed after being exchanged heat in condensation collector, the fluid of condensation returns to evaporation collector by return pipe；Constant-current stabilizer is set in the tedge, and the multiple constant-current stabilizers of setting in same root tedge, along the short transverse of tedge, the length of the constant-current stabilizer is continuously increased.The present invention is changed by the length of constant-current stabilizer, there are when Gas- liquid two-phase flow in tedge, augmentation of heat transfer, while weakening the vibration of tedge, reduce noise level.
Description
Technical field
The invention belongs to heat pipe field more particularly to a kind of heat exchange heat pipes.
Background technique
Hot pipe technique is George Ge Luofo of U.S. Los Alamos (Los Alamos) National Laboratory in 1963
One kind of (George Grover) invention is known as the heat transfer element of " heat pipe ", it takes full advantage of heat-conduction principle and phase transformation is situated between
The heat of thermal objects is transmitted to outside heat source rapidly by the quick thermal transport property of matter through heat pipe, and the capacity of heat transmission is more than to appoint
The capacity of heat transmission of what known metal.
The industries such as aerospace, military project were widely used in front of hot pipe technique, since being introduced into radiator manufacturing, so that
People change the mentality of designing of traditional heat sinks, get rid of the list for obtaining more preferable heat dissipation effect by high air quantity motor merely
One radiating mode makes radiator obtain satisfied heat transfer effect using hot pipe technique, opens heat dissipation industry new world.At present
Heat pipe is widely used in various heat exchange equipments, including nuclear power field, such as the UTILIZATION OF VESIDUAL HEAT IN of nuclear power etc..
On the one hand, heat pipe is in evaporation process, inevitably in carrying of liquids to tedge, simultaneously as condensation end
Exothermic condensation so that liquid also inevitably enters tedge, so that tedge there are liquid in condensation end
Interior fluid is liquid-vapor mixture, while heat pipe in the process of running can be because of the on-condensible gas of aging generation, on-condensible gas one
As rise to the condensation end on heat pipe top, the presence of on-condensible gas leads to the pressure increase in condensation end of heat pipe, and pressure makes
Flowing in the upward riser of liquid.Greatly affect the efficiency of heat exchange.
On the other hand, condensation this section of collector, because the space of this section becomes larger suddenly, space are exported to from tedge
Variation will lead to quickly flowing upwards out and assemble for gas, therefore spatial variations will lead to the vapour phase (vapour group) of aggregation from tedge
Position enters condensation collector, and due to gas (vapour) liquid density contrast, air mass leaves adapter tube position and will move rapidly upward, and air mass is former empty
Between position the liquid of wall surface is pushed away by air mass while will also spring back and hit wall surface rapidly, formed impingement phenomenon.Gas (vapour) liquid phase
More discontinuous, air mass aggregation is bigger, and Impact energy is bigger.Impingement phenomenon will cause biggish noise vibration and mechanical shock, right
Equipment damages.
The present inventor also devises a kind of multitube constant-current stabilizer in applying in front, shown in Figure 6.But such dress
It sets and finds in operation, because being to be closely linked between pipe, the space A formed between three root canals is relatively
Small, because the convex arc that space A is three root canals is formed, most of area stenosis of space A will cause fluid and be difficult to enter
Pass through, cause fluid short, to affect the heat exchange of fluid, good current stabilization can not be played the role of.Simultaneously as above-mentioned knot
More root canal subgroups of structure are combined, and manufacture is difficult.
In view of the above-mentioned problems, the present invention is improved on the basis of invention in front, a kind of new heat pipe is provided, from
And solve the problems, such as that the coefficient of heat transfer in the case where heat pipe heat exchanging is low and its heat exchange is non-uniform.
Summary of the invention
The present invention provides a kind of new heat pipes, to solve the technical issues of front occurs.
To achieve the goals above, technical scheme is as follows:
A kind of heat pipe, including evaporation collector, condensation collector, tedge and return pipe, the tedge and evaporation collector and
Condensation collector is connected, and the evaporation collector is located at lower part, and the condensation collector is located at top, and the fluid is in evaporation collector
Heat absorption evaporation, enters condensation collector by tedge, condenses after being exchanged heat in condensation collector, the fluid of condensation passes through reflux
Pipe returns to evaporation collector；Constant-current stabilizer is set in the tedge, the multiple constant-current stabilizers of setting in same root tedge, along upper
The length of the short transverse of riser, the constant-current stabilizer is continuously increased.
Preferably, the ever-increasing amplitude of the length of the constant-current stabilizer is increasingly along the short transverse of tedge
Greatly.
Preferably, the constant-current stabilizer includes core and shell, the core setting in the shell, the shell with it is upper
Riser inner wall is connected and fixed, and the core is the integral structure part extended along outer cover length direction, is set on the structural member
It is equipped with a number of through hole.
Preferably, the through hole is round, the distance between adjacent through hole center of circle L1 > 2R, wherein R is perforation
Pore radius.
Preferably, aperture is arranged between adjacent through hole, the connection between through hole is realized by aperture.
Preferably, the multiple constant-current stabilizers of setting in tedge, the height that distance rises tube inlet is H, adjacent current stabilization dress
It the distance between sets as S, S=F1(H), meet following require:
S’<0, S”>0。
Preferably, the multiple constant-current stabilizers of setting in tedge, the height that distance rises tube inlet is H, constant-current stabilizer
Length is C, C=F2(H), meet following require:
C’>0, C”>0。
Preferably, the multiple constant-current stabilizers of setting in tedge, the height that distance rises tube inlet is H, constant-current stabilizer
Perforation bore dia is D, D=F3(H), meet following require:
D’<0, D”>0。
Preferably, groove is arranged in the rising inside pipe wall, the shell of the constant-current stabilizer is arranged in groove, described outer
The inner wall of shell and the aligning inner of tedge.
Preferably, tedge is welded for multi-segment structure, constant-current stabilizer is arranged in the junction of multi-segment structure.
Preferably, the distance between adjacent constant-current stabilizer is S, the length of constant-current stabilizer is C, and the outer diameter of heat exchanger tube is W,
The radius of through hole is R, the distance between adjacent through hole center of circle L1, meets following require:
S/C=a-b*LN (W/(2*R))；
L1/(2*R)=c* (W/(2*R))-d* (W/(2*R))2-e
Wherein LN is logarithmic function, and a, b, c, d, e is parameter, wherein 3.0 < a < 3.5,0.5 <b < 0.6；2.9<c<3.1,
0.33<d<0.37,4.8<e<5.3；
Wherein the spacing of constant-current stabilizer is the both ends the distance between opposite with adjacent constant-current stabilizer；
34<W<58mm；
4<R<6mm;
17<C<25mm；
32<S<40mm；
1.05 < L1/(2*R) < 1.25.
Preferably, a=3.20, b=0.54, c=3.03, d=0.35, e=5.12.
Compared with prior art, the present invention has the advantage that:
1) present invention is changed by the length of constant-current stabilizer, there are when Gas- liquid two-phase flow in tedge, augmentation of heat transfer,
Weaken the vibration of tedge simultaneously, reduces noise level.
2) the present invention provides a kind of constant-current stabilizers of Novel structure, separate two-phase fluid relative to by constant-current stabilizer
At liquid and gas, liquid phase is divided into small liquid group, gas phase is divided into minute bubbles, inhibits the reflux of liquid phase, promotes gas phase suitable
Channel Group is dynamic, plays the role of regime flow, has the effect of vibration and noise reducing, improves heat transfer effect.It is filled relative to multitube current stabilization
It sets, further increases steady flow result, augmentation of heat transfer, and be simple to manufacture.
3) present invention is equivalent in tedge by setting porous type constant-current stabilizer and increases inner area, enhanced and changed
Heat improves heat transfer effect.
4) present invention avoids only because vehicle repair major is divided in the entire cross-section location of tedge
Tedge inner wall is split, thus entirely rise realized on tube section expand liquid-vaqor interface and vapour phase boundary layer with it is cold
But the contact area of wall surface and enhance disturbance, reduce noise and vibration, enhance heat transfer.
5) distance, the length of constant-current stabilizer of the invention by being arranged between adjacent constant-current stabilizer in tedge short transverse
The rule variation of the parameters size such as outer diameter of degree, through hole reduces noise to further reach steady flow result, improves heat exchange
Effect.
6) present invention has been carried out widely by heat exchange rule caused by the variation to porous type constant-current stabilizer parameters
Research, when meeting flow resistance, realizes the best relation formula of the effect of vibration and noise reducing.
Detailed description of the invention
Fig. 1 is heat pipe structure schematic diagram of the invention；
Fig. 2 constant-current stabilizer cross-sectional structure schematic diagram of the present invention；
Fig. 3 is constant-current stabilizer of the present invention arrangement schematic diagram in tedge；
Fig. 4 is another schematic diagram that constant-current stabilizer of the present invention is arranged in tedge.
Fig. 5 is that constant-current stabilizer of the present invention arranges cross-sectional view in tedge.
Fig. 6 is the structural schematic diagram of the two-phase flow tube shell type heat exchanger in background technique.
In figure: 1, evaporating collector, 2, condensation collector, 3, tedge, 4, constant-current stabilizer, 41 shells, 42 holes, 43 structures
Part, 5, return pipe.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
Herein, if without specified otherwise, it is related to formula, "/" indicates that division, "×", " * " indicate multiplication.
A kind of heat pipe as shown in Figure 1, including evaporation collector 1, condensation collector 2, tedge 3 and return pipe 5, the rising
Pipe 3 is connected with evaporation collector 1 and condensation collector 2, and the evaporation collector 1 is located at lower part, and the condensation collector 2 is located at top,
The fluid enters condensation collector 2 in evaporation 1 interior suction thermal evaporation of collector, by tedge 3, exchanges heat in condensation collector 2
After condense, the fluid of condensation returns to evaporation collector 1 by return pipe 5.
As illustrated in figures 4-5, porous type constant-current stabilizer 4 is set in tedge 3.The structure of the porous type constant-current stabilizer 4
See Fig. 3.As shown in figure 3, the constant-current stabilizer 4 includes core and shell 42, the core is arranged in shell 42, the shell
It is connected and fixed with inside pipe wall is risen, the core is the integral structure part 43 extended along outer cover length direction, the structure
A number of through hole 42 is provided on part.
Porous type constant-current stabilizer is arranged in the present invention in tedge 3, will be in two-phase fluid by porous type constant-current stabilizer
Liquid phase and vapour phase are separated, and liquid phase is divided into small liquid group, vapour phase is divided into minute bubbles, avoid the complete of liquid phase and vapour phase
It separates, promotes liquid vapor phase smooth outflow, play the role of regime flow, have the effect of vibration and noise reducing.Relative to multitube
Constant-current stabilizer further increases steady flow result, augmentation of heat transfer, and is simple to manufacture.
The present invention is equivalent to by setting porous type constant-current stabilizer and increases interior heat exchange area in tedge, enhanced
Heat exchange, improves heat transfer effect.
The present invention is because all cross-section locations by gas-liquid two-phase in all tedges are divided, thus entire
The segmentation of gas-liquid interface and gas phase boundary and the contact area of cooling wall are realized on heat exchange tube section and enhances disturbance, greatly
Big reduces noise and vibration, enhances heat transfer.
Preferably, the through hole is round, the distance between adjacent through hole center of circle L1 > 2R, wherein R is perforation
Pore radius.
By the distance between through hole center of circle L1 > 2R, so that maintained a certain distance between adjacent through hole 51, from
And guarantees each hole and preferably separate two phase flow fluid.
Preferably, the core is the structural member that integration is processed.By the way that porous core is arranged, can to make
It makes simple.
Preferably, aperture is arranged between adjacent through hole, the connection between through hole 42 is realized by aperture.
Preferably, the position of the both side ends of the connection of return pipe 5 evaporation collector 1 and condensation collector 2.Guarantee fluid in this way
Flow path in condensation collector 2 is long, can further increase heat-exchange time, improves heat exchange efficiency.
Preferably, aperture is arranged between adjacent through hole 42 realizes perforation.By the way that aperture is arranged, it is ensured that adjacent
It is interconnected between through hole, pressure that can uniformly between through hole, so that the fluid of high pressure runner flows to low pressure, while
Liquid phase and vapour phase can further be separated while fluid flows, be conducive to further stablize two-phase flow.
Preferably, heat exchange pipeline is passed through in condensation collector 2, in the fluid in the heat exchange pipeline and condensation collector 2
Steam exchanges heat.
Preferably, tedge 3 and evaporation collector 1 are all endothermic sections.
Preferably, setting is more in tedge 3 along the flow direction (i.e. the short transverse of Fig. 2) of fluid in tedge 3
A constant-current stabilizer 4, from the entrance of tedge to the outlet of tedge, the distance between adjacent constant-current stabilizer is shorter and shorter.If away from
It is H with a distance from tube inlet from rising, the distance between adjacent constant-current stabilizer is S, S=F1(H), i.e. S is using height H as variable
Function, S ' are the first order derivatives of S, meet following require:
S’<0;
Main cause is that carrier's liquid is understood in uphill process because of the steam in tedge, in uphill process, on
Riser is constantly heated, and causes the steam in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more,
Exchange capability of heat in tedge can increase with vapour phase and weaken relatively, and vibration and its noise also can be continuous with vapour phase increase
Increase.Therefore the distance between the adjacent constant-current stabilizer for needing to be arranged is shorter and shorter.
In addition, exporting to condensation this section of collector, because the space of this section becomes larger suddenly, the variation in space from tedge
It will lead to quickly flowing upwards out and assemble for gas, therefore spatial variations will lead to the vapour phase (vapour group) of aggregation from tedge position
Into condensation collector, due to gas (vapour) liquid density contrast, air mass leaves adapter tube position and will move rapidly upward, and air mass original space bit
It sets and the liquid of wall surface is pushed away by air mass while will also spring back and hit wall surface rapidly, form impingement phenomenon.Gas (vapour) liquid phase is more not
Continuously, air mass aggregation is bigger, and water hammer energy is bigger.Impingement phenomenon will cause biggish noise vibration and mechanical shock, to equipment
It damages.Therefore in order to avoid the generation of this phenomenon, the distance between adjacent constant-current stabilizer being arranged at this time is shorter and shorter,
To constantly separate gas phase and liquid phase in fluid delivery process, to reduce vibration and noise to the full extent.
It is found through experiments that, by above-mentioned setting, can both reduce vibration and noise to the full extent, while can mention
High heat transfer effect.
Further preferably, from the entrance of tedge 3 to the outlet of tedge 3, the distance between adjacent constant-current stabilizer is more next
Shorter amplitude is continuously increased.That is S " is the second derivative of S, meets following require:
S”>0;
It is found through experiments that, by being improved simultaneously so set, 9% or so vibration and noise can be further decreased
7% or so heat transfer effect.
Preferably, the length of each constant-current stabilizer 4 remains unchanged.
Preferably, other than the distance between adjacent constant-current stabilizer 4, constant-current stabilizer others parameter (such as length,
Caliber etc.) it remains unchanged.
Preferably, along the short transverse of tedge 3, the multiple constant-current stabilizers 4 of setting in tedge 3, from tedge 3
For entrance to the outlet of tedge 3, the length of constant-current stabilizer 4 is increasingly longer.I.e. the length of constant-current stabilizer is C, C=F2(X), C ' is C
First order derivative, meet following require:
C’>0;
Further preferably, from the entrance of tedge to the outlet of tedge, the increasingly longer amplitude of the length of constant-current stabilizer
It is continuously increased.That is C " is the second derivative of C, meets following require:
C”>0;
The variation of the distance between for example adjacent constant-current stabilizer of specific reason is identical.
Preferably, the distance between adjacent constant-current stabilizer remains unchanged.
Preferably, the length in addition to constant-current stabilizer is outside one's consideration, constant-current stabilizer others parameter (such as adjacent spacing, caliber
Deng) remain unchanged.
Preferably, along the short transverse of tedge 3, the multiple constant-current stabilizers of setting in tedge 3, from tedge 3
For entrance to the outlet of tedge 3, the diameter of the through hole 42 in different constant-current stabilizers 4 is smaller and smaller.That is the perforation of constant-current stabilizer
Bore dia is D, D=F3(X), D ' is the first order derivative of D, meets following require:
D’<0;
Preferably, the perforation bore dia of constant-current stabilizer is smaller and smaller from the entrance of tedge to the outlet of tedge
Amplitude is continuously increased.I.e.
D " is the second derivative of D, meets following require:
D”>0。
The variation of the distance between for example adjacent constant-current stabilizer of specific reason is identical.
Preferably, the length of constant-current stabilizer and the distance of adjacent constant-current stabilizer remain unchanged.
Preferably, other than the perforation bore dia of constant-current stabilizer, constant-current stabilizer others parameter (such as it is length, adjacent
The distance between constant-current stabilizer etc.) it remains unchanged.
Further preferably, as shown in figure 3, groove is arranged inside the tedge 3, the shell 42 of the constant-current stabilizer 4 is set
It sets in groove.
Preferably, the aligning inner of the inner wall of shell 42 and tedge 3.By alignment, so that tedge inner wall table
Reach on face in the same plane, guarantees the smooth of surface.
Preferably, the thickness of shell 42 is less than the depth of groove, tedge inner wall can be made to form groove in this way,
To carry out augmentation of heat transfer.
Further preferably, as shown in figure 4, tedge 3 is welded for multi-segment structure, the junction setting of multi-segment structure is steady
Flow device 4.This mode makes being simple to manufacture for the tedge that constant-current stabilizer is arranged, and cost reduces.
It is learnt by analyzing and testing, the spacing between constant-current stabilizer cannot be excessive, leads to damping noise reduction if excessive
Effect it is bad, while can not be too small, cause resistance excessive if too small, similarly, the diameter of through hole can not it is excessive or
Person is too small, and the effect for also resulting in damping noise reduction is bad or resistance is excessive, therefore the present invention is through a large number of experiments, preferential
Meet normal flow resistance (total pressure-bearing be 2.5Mpa hereinafter, single riser on-way resistance be less than or equal to 5Pa/M)
In the case where, so that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
Preferably, the distance between adjacent constant-current stabilizer is S, the length of constant-current stabilizer is C, and the outer diameter of heat exchanger tube is W,
The radius of through hole is R, the distance between adjacent through hole center of circle L1, meets following require:
S/C=a-b*LN (W/(2*R))；
L1/(2*R)=c* (W/(2*R))-d* (W/(2*R))2-e
Wherein LN is logarithmic function, and a, b, c, d, e is parameter, wherein 3.0 < a < 3.5,0.5 <b < 0.6；2.9<c<3.1,
0.33<d<0.37,4.8<e<5.3；
Wherein the interval S of constant-current stabilizer is the both ends the distance between opposite with adjacent constant-current stabilizer；I.e. front current stabilization fills
The distance between the front end of the tail end set and constant-current stabilizer below.Referring specifically to the mark of Fig. 4.
34<W<58mm；
4<R<6mm;
17<C<25mm；
32<S<40mm；
1.05 < L1/(2*R) < 1.25.
Preferably, a=3.20, b=0.54, c=3.03, d=0.35, e=5.12.
Preferably, rising length of tube L between 3000-5500mm.Further preferably, between 3500-4500mm.
By the preferred of the optimal geometric scale of above-mentioned formula, can be realized under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Further preferably, as the increase of W/R, a constantly reduce, b constantly increases.
For parameters such as other parameters, such as tube wall, shell wall thickness according to normal standard setting.
Preferably, hot tube fluid is water.
Preferably, through hole 42 extends in the whole length direction of constant-current stabilizer 4.I.e. the length of through hole 42 is equal to steady
Flow the length of device 4.
Preferably, the caliber of the evaporation collector 1 is less than the caliber of condensation collector 2.
The internal diameter for evaporating collector is R1, and the internal diameter for condensing collector is R2, as preferably then 0.45 < R1/R2 < 0.88.
By above-mentioned setting, can further augmentation of heat transfer, can be improved 7% or more heat exchange efficiency.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..
Claims (3)
1. a kind of heat pipe, including evaporation collector, condensation collector, tedge and return pipe, the tedge with evaporate collector and cold
Agglutination pipe is connected, and the evaporation collector is located at lower part, and the condensation collector is located at top, and fluid absorbs heat in evaporation collector and steams
Hair, enters condensation collector by tedge, condenses after being exchanged heat in condensation collector, the fluid of condensation is returned to by return pipe
Evaporate collector；It is characterized in that, constant-current stabilizer is set in the tedge, the multiple constant-current stabilizers of setting in same root tedge,
Along the short transverse of tedge, the length of the constant-current stabilizer is continuously increased；The constant-current stabilizer includes core and shell, institute
State core setting in the shell, the shell is connected and fixed with inside pipe wall is risen, and the core is prolonged along outer cover length direction
The integral structure part stretched is provided with a number of through hole on the structural member.
2. heat pipe as described in claim 1, which is characterized in that along the short transverse of tedge, the length of the constant-current stabilizer
It is increasing to spend ever-increasing amplitude.
3. heat pipe as described in claim 1, which is characterized in that the through hole be it is round, between the adjacent through hole center of circle
Distance L1 > 2R, wherein R be perforation pore radius.
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| CN201710267200.7A CN107044789B (en) | 2017-04-21 | 2017-04-21 | A kind of porous constant-current stabilizer heat pipe |
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| CN201710267200.7A CN107044789B (en) | 2017-04-21 | 2017-04-21 | A kind of porous constant-current stabilizer heat pipe |
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| CN107044789B true CN107044789B (en) | 2019-02-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109237972B (en) * | 2017-04-21 | 2019-05-03 | 青岛中正周和科技发展有限公司 | A kind of heat pipe design method of porous constant-current stabilizer caliber change |
| CN109916207B (en) * | 2018-06-12 | 2020-05-26 | 山东大学 | Loop heat pipe with diameter-variable ascending pipe |
| CN109916206B (en) * | 2018-06-12 | 2020-05-26 | 山东大学 | Loop heat pipe |
| CN109974493B (en) * | 2018-06-12 | 2020-05-26 | 山东大学 | Loop heat pipe of sheet-structure separation device |
| CN109974490B (en) * | 2018-06-12 | 2020-05-26 | 山东大学 | Design method of ascending pipe of loop heat pipe |
| CN109489024B (en) * | 2018-06-27 | 2020-04-07 | 青岛鑫众合贸易有限公司 | Evaporator system for heating liquid medicine |
| CN109737368B (en) * | 2018-06-27 | 2020-06-02 | 青岛鑫众合贸易有限公司 | Steam heat exchanger with steady flow structure |
| CN110631266B (en) * | 2018-07-07 | 2020-08-18 | 威海文海节能科技有限公司 | Solar water heater with variable distance between condensing end stabilizing devices |
| CN110793347B (en) * | 2018-07-20 | 2021-01-29 | 山东大学 | Shell-and-tube heat exchanger with optimized heat exchange tube space |
| CN111595034B (en) * | 2018-08-03 | 2021-10-26 | 青岛佰腾科技有限公司 | Method for intelligently controlling solar heat storage heating through communication means |
| CN110806017B (en) * | 2018-08-05 | 2021-07-16 | 国网山东省电力公司无棣县供电公司 | Pressure monitoring groove type solar heat collector system |
| CN109612309B (en) * | 2018-12-18 | 2020-03-17 | 青岛吉云德和商贸有限公司 | Liquid medicine shell-and-tube heat exchanger for heating fumigation |
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| CN2901053Y (en) * | 2006-04-29 | 2007-05-16 | 林国策 | Small low pressure steam boiler |
| CN101639374A (en) * | 2009-08-26 | 2010-02-03 | 姚贤卿 | Multiphase flow rectifying device |
| CN102588699A (en) * | 2012-02-29 | 2012-07-18 | 北京中油联自动化技术开发有限公司 | Flow equalizer |
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