CN110081745A - A kind of evaporation part caliber is greater than the loop circuit heat pipe of condensation part - Google Patents
A kind of evaporation part caliber is greater than the loop circuit heat pipe of condensation part Download PDFInfo
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- CN110081745A CN110081745A CN201810603156.7A CN201810603156A CN110081745A CN 110081745 A CN110081745 A CN 110081745A CN 201810603156 A CN201810603156 A CN 201810603156A CN 110081745 A CN110081745 A CN 110081745A
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- pipe
- heat
- separating device
- condensation
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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
A kind of loop circuit heat pipe, including evaporation part, condensation part and the insulation and the reflux portion that connect evaporation part and condensation part, fluid absorbs heat in evaporation part and evaporates, and enters condensation part by insulation, it is condensed after being exchanged heat in condensation part, the fluid of condensation returns to evaporation collector by return pipe；It is characterized in that, the evaporation part includes absorbing pipe, reflux portion includes condenser pipe, and the caliber of the absorbing pipe is greater than the caliber of condenser pipe.The present invention provides a kind of loop circuit heat pipe of Novel structure, mainly increases the resistance of condenser pipe, reduces the resistance of evaporation part, so that steam is easier from evaporation part flowing, loop circuit heat pipe preferably forms circulation.
Description
Technical field
The invention belongs to heat pipe field more particularly to a kind of loop circuit 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 absorbing pipe, simultaneously as condensation end
Exothermic condensation so that liquid also inevitably enters absorbing pipe, so that absorbing pipe 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
Liquid is flowed into absorbing pipe.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 absorbing pipe
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 absorbing pipe
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.
In addition, causing Vapor Liquid in heat exchange separated from each other, so that between steam and liquid not because there is vapour-liquid
It can be carried out sufficient mixing, influence heat transfer effect, cause heat exchange uneven, local temperature is excessively high or too low.
The present inventor also devises a variety of heat-pipe apparatus to solve the above problems, such as multitube in applying in front, but
It is that such device is found in operation, because being to be closely linked between pipe, the sky that is formed between three root canals
Between A it 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 stream
Body is difficult to enter through, and causes fluid short, to affect the heat exchange of fluid, can not play the role of good current stabilization.Simultaneously
Because more root canal subgroups of above structure are combined, manufacture is difficult.Such as 2017102671998 structures again, although the structure
It solves fluid short phenomenon, but there are problems that circulation area is substantially reduced, lead to the increase of flow resistance.Again for example
2017102949490 annular and separation device, separating device uses ring structure in ring structure, leads to separating device on the whole
Annular space separates unevenly in the circumferential, and because there are ring structure so that the position of four angles of annular space occur it is small
In 90 degree of acute angle, this, which will lead to, has fluid flowing short circuit in the acute angle portion less than 90 degree.
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 the non-uniform heat transfer problem of existing current stabilization in the case where solving heat pipe heat exchanging.So that gas and liquid are sufficiently mixed
It closes, improves heat transfer effect
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 loop circuit heat pipe, including evaporation part, condensation part and the insulation and the reflux portion that connect evaporation part and condensation part, stream
Body absorbs heat in evaporation part and evaporates, and enters condensation part by insulation, condenses after being exchanged heat in condensation part, and the fluid of condensation is logical
It crosses return pipe and returns to evaporation collector；It is characterized in that, the evaporation part includes absorbing pipe, reflux portion includes condenser pipe, the suction
The caliber of heat pipe is greater than the caliber of condenser pipe.
Preferably, separating device is arranged in absorbing pipe, the separating device is laminated structure, and the laminated structure is being inhaled
It is arranged on the cross section of heat pipe；The separating device is made of square through-hole and octagon through-hole, the square through-hole
Side length be equal to the side length of octagon through-hole, four sides of the square through-hole are that four different octagons are logical respectively
The side in hole, positive eight deformation four of through-hole apart from one another by while be respectively four different square through-holes while.
Preferably, the cross section of the absorbing pipe is rectangular.
Preferably, along the direction that fluid flows, the caliber of absorbing pipe constantly increases.
Preferably, constantly increased amplitude is increasing for the caliber of absorbing pipe along the direction that fluid flows.
Preferably, the multiple separating devices of setting in absorbing pipe, the distance of distance heat absorption tube inlet is H, adjacent separation dress
Spacing between setting is S, S=F1(H), meet following require:
S’<0,S”>0。
Preferably, the multiple separating devices of setting in absorbing pipe, the distance of distance heat absorption tube inlet is H, square side
A length of C, C=F2(H), meet following require:
C’<0,C”>0。
Preferably, the multiple separating devices of setting in absorbing pipe, the distance of distance heat absorption tube inlet is H, absorbing pipe it is straight
Diameter is D, D=F3(H), meet following require:
D’>0,D”>0。
Preferably, gap is arranged in heat absorption inside pipe wall described in the separating device, the outer end setting of the separating device exists
In gap.
Preferably, absorbing pipe is welded for multi-segment structure, separating device is arranged in the junction of multi-segment structure.
Preferably, the distance between adjacent separating device is S1, the side length of square through-hole is L1, and absorbing pipe is pros
Tee section, the square section side length of absorbing pipe are L2, meet following require:
S1/L2=a* (L1/L2)2+b*(L1/L2)-c
Wherein a, b, c are parameters, wherein 39.8 < a < 40.1,9.19 <b < 9.21,0.43 < c < 0.44；
9<L2<58mm；
1.9<L1<3.4mm；
15<S1<31mm。
Further preferably, a=39.87, b=9.20, c=0.432
Further preferably, with the increase of L1/L2, a, b is increasing, from smaller and smaller.
Preferably, with the increase of L2, L1 is also continuously increased.But with the increase of L2, the ever-increasing amplitude of L1
It is smaller and smaller.
Preferably, with the increase of L2, S1 constantly reduces.But with the increase of L2, the ever-reduced amplitude of S1 is got over
Come smaller.
Preferably, the evaporation part includes multiple absorbing pipes, the multiple absorbing pipe is parallel construction in parallel.
Preferably, the distance between adjacent separating device is S1, square side length is L1, and absorbing pipe, which is square, to be cut
Face, the side length of absorbing pipe are L2, and the spacing between adjacent heat absorption tube hub is that S2 meets following require:
The distance between adjacent separating device is S1, and square side length is L1, and absorbing pipe is square section, absorbing pipe
Side length be L2, the spacing between adjacent heat absorption tube hub is that S2 meets following require:
S2/L2=d* (S1/L2)2+e-f*(S1/L2)3-h*(S1/L2)；
Wherein d, e, f, h are parameters,
0.280<d<0.285,1.342<e<1.350,0.060<f<0.065,0.169<h<0.171；
9<L2<58mm；
1.9<L1<3.4mm；
15<S1<31mm。
16<S2<76mm。
Preferably, d, e is increasing with the increase of S1/L2, f, h are smaller and smaller.
Preferably, S2 is continuously increased with the increase of L2, but with the increase of L2, the ever-increasing amplitude of S2 is got over
Come smaller.
Compared with prior art, the present invention has the advantage that:
1) present invention provides a kind of loop circuit heat pipe of Novel structure, mainly increases the resistance of condenser pipe, reduces evaporation part
Resistance so that steam from evaporation part flowing be easier, loop circuit heat pipe preferably forms circulation.
2) separation of the Novel structure combined the present invention provides a kind of new-type square through-hole and octagon through-hole
Device, by square and octagon, so that the angle that the side of the square hole and octagon hole that are formed is formed all is big
In being equal to 90 degree, so that fluid can sufficiently flow through each position in each hole, the short of fluid flowing is avoided or reduced
Road.Two-phase fluid is separated into liquid and gas by the separating device of Novel structure by the present invention, and liquid phase is divided into small liquid group,
Gas phase is divided into minute bubbles, inhibits the reflux of liquid phase, promotes gas phase smooth outflow, plays the role of regime flow, has and subtracts
The effect of vibration noise reduction, improves heat transfer effect.Separating device in compared with the existing technology further increases steady flow result, strengthens
Heat transfer, and be simple to manufacture.
3) present invention is by being reasonably laid out, so that square and octagon through-hole are evenly distributed, so that whole
On rank street face on fluid segmentation uniformly, avoid the segmentation of ring structure in the prior art circumferentially and unevenly ask
Topic.
4) present invention is uniformly distributed by the interval of square hole and octagon hole, so that macropore and aperture are whole
Body is evenly distributed on cross section, and by the change in location of the macropore of adjacent separating device and aperture, so that segregation
More preferably.
5) present invention is laminated structure by setting separating device, so that separating device structure is simple, cost is reduced.
6) hole that the present invention passes through the distance, separating device that are arranged between adjacent separating device in absorbing pipe short transverse
Side length, the parameters size such as caliber, the tube spacing of absorbing pipe rule variation, have studied the optimal relationship ruler of above-mentioned parameter
It is very little, to further reach steady flow result, noise is reduced, improves heat transfer effect.
7) present invention widely grind by heat exchange rule caused by the variation to annular and separation device parameters
Study carefully, 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 preferred heat pipe structure schematic diagram of the invention；
Fig. 2 separating device cross-sectional structure schematic diagram of the present invention；
Fig. 3 another structural schematic diagram in separating device cross section of the present invention；
Fig. 4 is separating device of the present invention arrangement schematic diagram in absorbing pipe or heat outting pipe；
Fig. 5 is that separating device of the present invention arranges cross-sectional view in absorbing pipe or heat outting pipe.
Fig. 6 is the concrete structure diagram of the evaporation part Fig. 1 or condensation part of the invention.
In figure: 1 heat pipe, 11 evaporation parts, 12 condensation parts, 13 insulations, 14 reflux portions, 15 absorbing pipes, 16,3 points of condenser pipe
Every device, 31 square through-holes, 32 octagon through-holes, 33 sides
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 loop circuit heat pipe 1 as shown in Figure 1, including evaporation part 11, condensation part 12 and connection evaporation part and condensation part
Insulation 13 and reflux portion 14, fluid absorb heat in evaporation part 11 and evaporate, and enter condensation part 12 by insulation 13, in condensation part 12
It is condensed after inside being exchanged heat, the fluid of condensation returns to evaporation part 11 by return pipe 14.Preferably, reflux portion also carries out absolutely
Heat.
It is improved as one, the evaporation part includes absorbing pipe, and separating device 3, the separating device 3 is arranged in absorbing pipe
Structure it is as shown in Figure 2,3.The separating device 3 is laminated structure, and the laminated structure is set on the cross section of absorbing pipe 15
It sets；The separating device 3 be square with octagon structure composition, to form square through-hole 31 and octagon through-hole
32.The side length of square through-hole as described in Figure 1 is equal to the side length of octagon through-hole, and four sides 33 of the square through-hole are divided
Be not the side 33 of four different octagon through-holes, positive eight deformation four of through-hole apart from one another by side 33 be respectively four not
The side 33 of same square through-hole.
The present invention uses the separating device of Novel structure, has the advantages that
1) separation of the Novel structure combined the present invention provides a kind of new-type square through-hole and octagon through-hole
Device, by square and octagon, so that the angle that the side of the square hole and octagon hole that are formed is formed all is big
In being equal to 90 degree, so that fluid can sufficiently flow through each position in each hole, the short of fluid flowing is avoided or reduced
Road.Two-phase fluid is separated into liquid and gas by the separating device of Novel structure by the present invention, and liquid phase is divided into small liquid group,
Gas phase is divided into minute bubbles, inhibits the reflux of liquid phase, promotes gas phase smooth outflow, plays the role of regime flow, has and subtracts
The effect of vibration noise reduction, improves heat transfer effect.Separating device in compared with the existing technology further increases steady flow result, strengthens
Heat transfer, and be simple to manufacture.
2) present invention is by being reasonably laid out, so that square and octagon through-hole are evenly distributed, so that whole
On rank street face on fluid segmentation uniformly, avoid the segmentation of ring structure in the prior art circumferentially and unevenly ask
Topic.
3) present invention is uniformly distributed by the interval of square hole and octagon through-hole, so that macropore and aperture exist
It is evenly distributed on whole cross section, and by the change in location of the macropore of adjacent separating device and aperture, so that separating effect
Fruit is more preferable.
4) present invention is laminated structure by setting separating device, so that separating device structure is simple, cost is reduced.
The present invention is equivalent to by setting annular and separation device and increases interior heat exchange area in heat exchanger tube, enhanced and changed
Heat improves heat transfer effect.
The present invention is because all cross-section locations by gas-liquid two-phase in all heat exchanger tubes 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.
One of endothermic section as Fig. 1 perhaps heat unit improves as shown in fig. 6, the endothermic section or heat unit packet
It includes more absorbing pipes 15 or condenser pipe 16 and connects the upper header and lower collector pipe of absorbing pipe 15 or condenser pipe 16.
Preferably, the separating device includes two types, such as Fig. 2, shown in 3, the first seed type is square center
Separating device, square are located at the center of absorbing pipe or condenser pipe, as shown in Figure 3；Second is octagon central compartment
Device, octagon are located at the center of absorbing pipe or condenser pipe, as shown in Figure 2.Preferably as one, above two type
Separating device is disposed adjacent, that is, the separating device type being disposed adjacent is different.I.e. adjacent with square center separating device is
Octagon central compartment device, adjacent with octagon central compartment device is square center separating device.The present invention
It is uniformly distributed by the interval of square hole and octagon hole, so that macropore and aperture are distributed on whole cross section
It is even, and by the change in location of the macropore of adjacent separating device and aperture so that by the fluid of macropore followed by
Aperture, by the fluid of aperture followed by macropore, further progress separates, and promotes the mixing of vapour-liquid, so that separating and changing
Thermal effect is more preferable.
Preferably, the cross section of the absorbing pipe 15 or condenser pipe 16 is square.
Preferably, along the direction that fluid flows, the caliber of absorbing pipe 15 constantly increases.Main cause is as follows: 1)
By the caliber for increasing absorbing pipe, it is possible to reduce the resistance of flowing, so that the steam of heat absorption in-tube evaporation is constantly towards caliber
Increased direction movement, to further promote circulating for loop circuit heat pipe.2) because of the continuous flowing with fluid, liquid
Body constantly evaporates in absorbing pipe, so that steam volume is increasing, pressure is also increasing, therefore by increasing pipe
Diameter meets the variation of ever-increasing steam volume and pressure, so that pressure is evenly distributed on the whole.3) pass through heat absorption
The increase of the caliber of pipe, it is possible to reduce impact phenomenon caused by the increase of the volume of steam outlet.
Preferably, constantly increased amplitude is increasing for the caliber of absorbing pipe 15 along the direction that fluid flows.On
The amplitude variation for stating caliber is that the applicant obtains with numerical simulation through a large number of experiments as a result, by above-mentioned setting,
Circulating for loop circuit heat pipe can further be promoted, it is integrally uniform to reach pressure, reduces impact phenomenon.
Preferably, the multiple separating devices of setting in absorbing pipe, from the entrance of absorbing pipe 15 to the outlet of absorbing pipe 15, point
Spacing between device is smaller.If the distance apart from heat absorption tube inlet is H, the spacing between adjacent separating device is S, S=
F1(H), i.e. S is using height H as the function of variable, and S ' is the first order derivative of S, meets following require:
S'<0；
Main cause is that meeting carrier's liquid is inhaled in uphill process in uphill process because of the steam in absorbing pipe
Heat pipe 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 absorbing pipe 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 separating device for needing to be arranged is shorter and shorter.
In addition, upper header or condensation this section of collector are exported to from absorbing pipe, because the space of this section becomes larger suddenly,
The variation in space will lead to quickly flowing upwards out and assemble for gas, thus spatial variations will lead to the vapour phase (vapour group) of aggregation from
Absorbing pipe position enters condensation collector, and due to gas (vapour) liquid density contrast, air mass leaves adapter tube position and will move rapidly upward, and gas
The former spatial position of group pushes away the liquid of wall surface by air mass while will also spring back and hit wall surface rapidly, forms impingement phenomenon.Gas
(vapour) liquid phase is more discontinuous, and air mass aggregation is bigger, and water hammer energy is bigger.Impingement phenomenon will cause biggish noise vibration and machinery
Impact, damages equipment.Therefore in order to avoid the generation of this phenomenon, between the adjacent separating device being arranged at this time away from
From shorter and shorter, to constantly separate gas phase and liquid phase in fluid delivery process, thus reduce to the full extent vibration and
Noise.
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 absorbing pipe 15 to the outlet of absorbing pipe 15, the distance between adjacent separating device is more
It is continuously increased come shorter amplitude.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, 7% or so vibration and noise can be further decreased
8% or so heat transfer effect.
Preferably, the multiple separating devices of setting in absorbing pipe, from the entrance of absorbing pipe 15 to the outlet of absorbing pipe 15, just
Rectangular side length is smaller and smaller.The distance of distance heat absorption tube inlet is H, and square side length is C, C=F2(H), C ' is the one of C
Subderivative meets following require:
C'<0；
Further preferably, the entrance of absorbing pipe 15 is to the outlet of absorbing pipe 15, the smaller and smaller amplitude of square side length
It is continuous to increase.C " is the second derivative of C, meets following require:
C”>0。
Specific reason changes referring to front separating device spacing.
Preferably, the distance between adjacent separating device remains unchanged.
Preferably, gap is arranged in the heat absorption inside pipe wall, the outer end of the separating device is arranged in gap.
Preferably, absorbing pipe is welded for multi-segment structure, separating device is arranged in the junction of multi-segment structure.
Preferably, referring to Fig. 6, the condensation part 12 includes condenser pipe, the condensation in loop circuit heat pipe shown in FIG. 1
Setting separating device as shown in Figure 3 in pipe.
Preferably, the cross section of the condenser pipe is square.
Preferably, along the direction that fluid flows, the caliber of condenser pipe 16 constantly reduces.Main cause is as follows: 1)
Because liquid constantly condenses in condenser pipe with the continuous flowing of fluid, so that fluid volume is smaller and smaller, pressure
Power is also smaller and smaller, therefore meets the variation of ever-increasing fluid volume and pressure by reducing caliber, so that whole
Pressure is evenly distributed on body, and heat exchange is uniform.2) by the reduction of the caliber of absorbing pipe, material can be saved, cost is reduced.
Preferably, along the direction that fluid flows, the amplitude that the caliber of condenser pipe 16 constantly reduces is increasing.On
The amplitude variation for stating caliber is that the applicant obtains with numerical simulation through a large number of experiments as a result, by above-mentioned setting,
Circulating for loop circuit heat pipe can further be promoted, it is integrally uniform to reach pressure.
Preferably, the multiple separating devices of setting in condenser pipe 16, from the entrance of condenser pipe 16 to the outlet of condenser pipe 16,
Spacing between separating device is bigger.If the distance apart from condensation tube inlet is H, the spacing between adjacent separating device is S, S
=F1(H), i.e. S is using height H as the function of variable, and S ' is the first order derivative of S, meets following require:
S'>0；
Main cause during decline, is condensed because the steam in condenser pipe 16 constantly condenses during decline
Continuous heat release is managed, causes the steam in biphase gas and liquid flow fewer and fewer, because the vapour phase in stream-liquid two-phase flow is fewer and fewer, is inhaled
Exchange capability of heat in heat pipe can increase and relative increase with vapour phase, and vibration and its noise also can be continuous with vapour phase increase
It reduces.Therefore the distance between the adjacent separating device for needing to be arranged is increasing with save the cost, reaches essentially identical effect
Fruit.
It is found through experiments that, by above-mentioned setting, can both reduce vibration and noise to the full extent, while can be
Reaching reduces flow resistance on the basis of heat transfer effect, reduces cost.
Further preferably, from the entrance of condenser pipe 16 to the outlet of condenser pipe 16, the distance between adjacent separating device is more
It is continuously increased come bigger amplitude.That is S " is the second derivative of S, meets following require:
S">0；
It is found through experiments that, by so set, 7% or so cost can be further decreased, while reducing 5% or so
Flow resistance.
Preferably, the multiple separating devices of setting in condenser pipe, from the entrance of condenser pipe 16 to the outlet of condenser pipe 16, just
Rectangular side length is increasing.The distance of distance heat absorption tube inlet is H, and square side length is C, C=F2(H), C ' is the one of C
Subderivative meets following require:
C'>0；
Further preferably, for the entrance of condenser pipe to the outlet of condenser pipe, the increasing amplitude of square side length is continuous
Increase.C " is the second derivative of C, meets following require:
C”>0。
Specific reason changes referring to front separating device spacing.
Preferably, the distance between adjacent separating device remains unchanged.
Preferably, gap is arranged in the rinse condenser pipe inwall, the outer end of the separating device is arranged in gap.
Preferably, condenser pipe is welded for multi-segment structure, separating device is arranged in the junction of multi-segment structure.
It is learnt by analyzing and testing, the spacing between separating device 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, square side length 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 absorbing pipe 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 separating device is S1, the side length of square through-hole is L1, and absorbing pipe is pros
Tee section, the side length of absorbing pipe square section are L2, meet following require:
S1/L2=a* (L1/L2)2+b*(L1/L2)-c
Wherein a, b, c are parameters, wherein 39.8 < a < 40.1,9.19 <b < 9.21,0.43 < c < 0.44；
9<L2<58mm；
1.9<L1<3.4mm；
15<S1<31mm。
Further preferably, a=39.87, b=9.20, c=0.432
Further preferably, with the increase of L1/L2, a, b is increasing, and c is smaller and smaller.
Preferably, the side length L1 of square through-hole is the average value of side length and outer side length in square through-hole, absorbing pipe
The side length L2 of square section is the average value of side length and outer side length in absorbing pipe.
Preferably, the outer side length of square through-hole is equal to the interior side length of absorbing pipe/condenser pipe square section.
Preferably, with the increase of L2, L1 is also continuously increased.But with the increase of L2, the ever-increasing amplitude of L1
It is smaller and smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, and the variation of above-mentioned rule, Neng Goujin are passed through
One step improves heat transfer effect, reduces noise.
Preferably, with the increase of L2, S1 constantly reduces.But with the increase of L2, the ever-reduced amplitude of S1 is got over
Come smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, can be into one by the variation of above-mentioned rule
Step improves heat transfer effect, reduces noise.
Preferably, the multiple absorbing pipe is in parallel as shown in fig. 6, the evaporation part includes multiple absorbing pipes 15
Parallel construction.The condensation part includes multiple condenser pipes 16, and the multiple condenser pipe 16 is parallel construction in parallel.
It is learnt by analyzing and testing, the spacing of absorbing pipe or condenser pipe will also meet certain requirements, such as cannot mistake
It is big or too small, no matter it is too large or too small all heat transfer effect can be caused bad, and because the application absorbing pipe in be provided with
Separating device, therefore separating device also there are certain requirements heat absorption tube spacing.Therefore the present invention is through a large number of experiments, preferential
Meet normal flow resistance (total pressure-bearing be 2.5Mpa hereinafter, single absorbing pipe 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.
The distance between adjacent separating device is S1, and square side length is L1, and absorbing pipe is square section, absorbing pipe
Side length be L2, the spacing between adjacent heat absorption tube hub is that S2 meets following require:
S2/L2=d* (S1/L2)2+e-f*(S1/L2)3-h*(S1/L2)；
Wherein d, e, f, h are parameters,
0.280<d<0.285,1.342<e<1.350,0.060<f<0.065,0.169<h<0.171；
9<L2<58mm；
1.9<L1<3.4mm；
15<S1<31mm。
16<S2<76mm。
Spacing between adjacent heat absorption tube hub is that S2 refers to the distance between heat absorption tube hub line.
Further preferably, d=0.282, e=1.347, f=0.062, h=0.170；
Preferably, d, e is increasing with the increase of S1/L2, f, h are smaller and smaller.
Preferably, S2 is continuously increased with the increase of L2, but with the increase of L2, the ever-increasing amplitude of S2 is got over
Come smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, can be into one by the variation of above-mentioned rule
Step improves heat transfer effect.
Above-mentioned empirical equation and various rule variations by numerous studies, is not limited solely to absorbing pipe, equally
Meet the requirement of condenser pipe 16.The distance between the adjacent separating device of condenser pipe that separating device is arranged is S1, square
Side length be L1, absorbing pipe is square section, and the side length of absorbing pipe is L2, and the spacing between adjacent heat absorption tube hub is S2
Need to meet above-mentioned requirement.
Preferably, absorbing pipe or 16 length L of condenser pipe are between 2000-2500mm.Further preferably, 2200-
Between 2300mm.
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.
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, the caliber of the absorbing pipe is greater than the caliber of condenser pipe.The resistance for mainly increasing condenser pipe, reduces
The resistance of evaporation part, so that steam is easier from evaporation part flowing, loop circuit heat pipe preferably forms circulation.
Preferably, condenser pipe 16 and absorbing pipe 15 are all vertical direction settings.
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 (5)
1. a kind of loop circuit heat pipe, including evaporation part, condensation part and the insulation and the reflux portion that connect evaporation part and condensation part, fluid
It absorbs heat and evaporates in evaporation part, enter condensation part by insulation, condensed after being exchanged heat in condensation part, the fluid of condensation passes through
Return pipe returns to evaporation collector；It is characterized in that, the evaporation part includes absorbing pipe, reflux portion includes condenser pipe, the heat absorption
The caliber of pipe is greater than the caliber of condenser pipe.
2. loop circuit heat pipe as described in claim 1, which is characterized in that separating device, the separating device are arranged in absorbing pipe
It is laminated structure, the laminated structure is arranged on the cross section of absorbing pipe；The separating device is by square through-hole and positive eight
Side shape through-hole composition, the side length of the square through-hole are equal to the side length of octagon through-hole, and four of the square through-hole
While be respectively four different octagon through-holes while, positive eight deformation four of through-hole apart from one another by side be respectively four not
The side of same square through-hole.
3. loop circuit heat pipe as described in claim 1, which is characterized in that the cross section of the absorbing pipe is square.
4. heat pipe as claimed in claim 3, which is characterized in that the distance between adjacent separating device is S1, square through-hole
Side length be L1, the side length of absorbing pipe is L2, meet following require:
S1/L2=a* (L1/L2)2+b*(L1/L2)-c
Wherein a, b, c are parameters, wherein 39.8 < a < 40.1,9.19 <b < 9.21,0.43 < c < 0.44；
9<L2<58mm；
1.9<L1<3.4mm；
15<S1<31mm。
5. a kind of loop circuit heat pipe, including evaporation part, condensation part and the insulation and the reflux portion that connect evaporation part and condensation part, fluid
It absorbs heat and evaporates in evaporation part, enter condensation part by insulation, condensed after being exchanged heat in condensation part, the fluid of condensation passes through
Return pipe returns to evaporation collector；It is characterized in that, reflux portion includes condenser pipe, separating device is set in condenser pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810603156.7A CN110081745B (en) | 2018-06-12 | 2018-06-12 | Loop heat pipe with evaporating part with pipe diameter larger than condensing part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810603156.7A CN110081745B (en) | 2018-06-12 | 2018-06-12 | Loop heat pipe with evaporating part with pipe diameter larger than condensing part |
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| CN110081745A true CN110081745A (en) | 2019-08-02 |
| CN110081745B CN110081745B (en) | 2020-10-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111578756A (en) * | 2020-04-02 | 2020-08-25 | 南方科技大学 | Gradient wettability loop heat pipe |
| CN113776370A (en) * | 2020-11-03 | 2021-12-10 | 山东交通学院 | Curved arc wall drainage loop heat pipe |
| CN113776371A (en) * | 2020-11-03 | 2021-12-10 | 山东交通学院 | Linear wall guide loop heat pipe |
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