CN107976094B - A kind of non-condensable gas porous type constant-current stabilizer heat exchanger of length variation - Google Patents
A kind of non-condensable gas porous type constant-current stabilizer heat exchanger of length variation Download PDFInfo
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- CN107976094B CN107976094B CN201710267203.0A CN201710267203A CN107976094B CN 107976094 B CN107976094 B CN 107976094B CN 201710267203 A CN201710267203 A CN 201710267203A CN 107976094 B CN107976094 B CN 107976094B
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 97
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 230000005514 two-phase flow Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims abstract description 8
- 238000013016 damping Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 43
- 239000012071 phase Substances 0.000 description 22
- 239000007791 liquid phase Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000003416 augmentation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 210000004262 dental pulp cavity Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/02—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by influencing fluid boundary
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/30—Safety or protection arrangements; Arrangements for preventing malfunction for preventing vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of non-condensable gas porous type constant-current stabilizer heat exchangers of length variation, including shell, end socket is respectively set in the shell both ends, tube sheet is arranged in the link position of the end socket and shell, the tube sheet at heat exchanger tube connection both ends, gas phase in stream-liquid two-phase flow is insoluble or slightly solubility gas, i.e. in heat transfer process, gas will not be dissolved in liquid, setting is used for the constant-current stabilizer of damping noise reduction in the heat exchanger tube, the multiple constant-current stabilizers of setting in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, the length of the constant-current stabilizer is first gradually reduced to a certain position, then the length of constant-current stabilizer is again gradual since a certain position increases.The present invention provides a kind of length variation by constant-current stabilizer, and there are when gas liquid two-phase flow in pipeline, utmostly the vibration of decrease pipeline, reduces noise level, while reducing flow resistance.
Description
Technical field
The present invention relates to a kind of shell-and-tube heat exchangers, exchange heat more particularly, to a kind of two-phase flow containing on-condensible gas
Device.
Background technique
Two phase flow heat transfer containing on-condensible gas is mixed into universally present in heat-exchanger rig, such as in heat transfer process
On-condensible gas, or because of the on-condensible gas that ageing equipment generates during fluid transport, it is (main that there are also such as natural gas liquefactions
Wanting ingredient is -42 DEG C of -162 DEG C of methane of boiling point, -88 DEG C of ethane of boiling point, boiling point propane etc.) during different boiling blending agent
Condensation, air separation, azeotrope refrigeration, petroleum or cracking waste plastics, the industries such as biogas production main technique mistake
Journey.
Fluid containing on-condensible gas is in heat transfer process because the presence of gas phase, will lead to that heat exchange efficiency is low, and deterioration is changed
Heat, process fluid flow is unstable, and will lead to the generation of water hammer.When the phase of two-phase working substance does not mix uniformly
And when discontinuously flowing, large-sized liquid group can occupy air mass space at high speed, cause two-phase flow unstable, thus tempestuously
Impact device and pipeline generate sharp pounding and noise, seriously threaten equipment operational safety.
For the Heat exchanger problem of biphase gas and liquid flow, it has therefore already been proposed that new settling mode solves above-mentioned ask
Topic, such as Publication No. CN105258535A patent application destroy laminar sublayer by setting bur, can by " thorn " and " hole "
To disturb fluid on different height respectively, to carry out augmentation of heat transfer.But above-mentioned technology does not solve biphase gas and liquid flow
Vibration and noise problem in heat exchanger, and structure is complicated for above-mentioned settling mode, and because of the dimensional problem of bur, nothing
Method guarantees the disturbance on the entire cross section in the middle part of heat exchanger tube, cannot achieve the uniform of gas phase liquid phase on the whole, noise and shake
Dynamic problem is still serious.In view of the above-mentioned problems, the present invention provides a kind of heat exchangers of the constant-current stabilizer of Novel structure, to solve
Certainly above-mentioned problem.
The present inventor also devises a kind of multitube constant-current stabilizer in applying in front, shown in Figure 7.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 regional space of space A is narrow, and will cause fluid can not
It enters through, causes fluid short, to affect the heat exchange of fluid, good current stabilization can not be played the role of.Simultaneously as
More root canal subgroups of above structure are combined, and manufacture is difficult.
Summary of the invention
The object of the present invention is to provide a kind of heat exchangers of the constant-current stabilizer of Novel structure, and there are gas-liquid two-phases in pipeline
When flowing, weaken the vibration in biphase gas and liquid flow heat exchanger tube, reduces noise level, while augmentation of heat transfer.
To achieve the goals above, technical scheme is as follows:
End socket is respectively set in a kind of biphase gas and liquid flow multitube shell-and-tube heat exchanger, including shell, the shell both ends, institute
The link position setting tube sheet of end socket and shell is stated, heat exchanger tube connects the tube sheet at both ends, and the gas phase in stream-liquid two-phase flow is insoluble
Or slightly solubility gas, i.e., in heat transfer process, gas will not be dissolved in liquid, and setting is for the steady of damping noise reduction in the heat exchanger tube
Device is flowed, the multiple constant-current stabilizers of setting in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, the constant-current stabilizer
Length be first gradually reduced to a certain position, then the length of constant-current stabilizer is again gradual since a certain position increases.
Preferably, along the flow direction of heat exchange tube fluid, the width that the length of the constant-current stabilizer gradually reduces
It spends increasing.
Preferably, the length of constant-current stabilizer gradually get over by increased amplitude along the flow direction of heat exchange tube fluid
Come bigger.
Preferably, the length of heat exchanger tube is L, a certain position is the middle position of heat exchanger tube length.
Preferably, the constant-current stabilizer includes core and shell, the core setting in the shell, the shell with change
Heat pipe 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, heat exchanger tube 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 5 < a < 6,1.5 <b < 2.0；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;
15<C<23mm；
49<S<70mm；
1.05 < L1/(2*R) < 1.25.
Preferably, a=5.53, b=1.79, c=3.03, d=0.35, e=5.12.
Compared with prior art, of the invention to have the advantage that
1) flowing law of the invention according to the gas phase liquid phase in heat exchanger tube, so that the length of the constant-current stabilizer first reduces
After increase, utmostly weaken the vibration of pipeline, reduce noise level, while reducing flow resistance.
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.Relative to multitube constant-current stabilizer, further increase
Steady flow result, augmentation of heat transfer, and be simple to manufacture.
3) present invention is equivalent to by setting constant-current stabilizer and increases interior heat exchange area in heat exchanger tube, enhance heat exchange,
Improve heat transfer effect.
4) present invention avoids existing because gas-liquid two-phase is divided in the entire cross-section location of heat exchanger tube
Only heat transfer tube wall face is split in technology, expands gas-liquid interface and gas phase to realize on entirely heat exchange tube section
The contact area of boundary layer and cooling wall simultaneously enhances disturbance, reduces noise and vibration, enhances heat transfer.
5) present invention is by setting up the distance between adjacent constant-current stabilizer, the length of constant-current stabilizer in heat exchanger tube length side
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 the structural schematic diagram of two-phase flow tube shell type heat exchanger of the invention；
Fig. 2 is the heat transfer tube structure diagram of two-phase flow tube shell type heat exchanger of the invention；
Fig. 3 constant-current stabilizer structural schematic diagram of the present invention；
Fig. 4 is constant-current stabilizer of the present invention arrangement schematic diagram in heat exchanger tube；
Fig. 5 is another schematic diagram that constant-current stabilizer of the present invention is arranged in heat exchanger tube.
Fig. 6 is that constant-current stabilizer of the present invention arranges cross-sectional view in heat exchanger tube.
Fig. 7 is the structural schematic diagram of the two-phase flow tube shell type heat exchanger in background technique.
Appended drawing reference is as follows: front head 1, cover flange 2, front tube sheet 3, shell 4, constant-current stabilizer 5, heat exchanger tube 6, back tube sheet
7, cover flange 8, rear head 9, support 10, support 11, tube-side inlet pipe 12, tube side outlet 13, shell side inlet pipe 14, shell side
Outlet 15, constant-current stabilizer shell 51, hole 52, structural member 53.
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.
It should be noted that if the two phase flow that the present invention mentions is biphase gas and liquid flow, gas herein without specified otherwise
Body is insoluble or slightly solubility gas, i.e., in heat transfer process, gas will not be dissolved in liquid.
A kind of shell-and-tube heat exchanger as shown in Figure 1, the shell-and-tube heat exchanger include shell 4, heat exchanger tube 6, tube side
Inlet tube 12, tube side outlet 13, shell side inlet adapter tube 14 and shell-side outlet adapter tube 15；6 groups of multiple heat exchanger tubes disposed in parallel
At heat-exchanging tube bundle be connected to front tube sheet 3, on back tube sheet 7；The front end of the front tube sheet 3 is connect with front head 1, back tube sheet 7
Rear end connects rear head 9；The tube-side inlet pipe 12 is arranged on rear head 9；The tube side outlet 13 is arranged preceding
On end socket 1；The shell side inlet adapter tube 14 and shell-side outlet adapter tube 15 is arranged on shell 4；The fluid of two phase flow is from pipe
Journey inlet tube 12 enters, and exchanges heat by heat exchanger tube, goes out from tube side outlet 13.
Setting is used for the constant-current stabilizer 5 of damping noise reduction in the heat exchanger tube 6, the multiple current stabilizations of setting in same root heat exchanger tube 6
Device 5, as shown in figure 4, along the flow direction (i.e. from the entrance of heat exchanger tube to the outlet of heat exchanger tube) of fluid in heat exchanger tube 6,
The length of the constant-current stabilizer 5 is first gradually reduced to a certain position, and then the length of constant-current stabilizer is again since a certain position
It is gradual to increase.
Main cause is because containing on-condensible gas in fluid, and along the flow direction of fluid, on-condensible gas is still
In the presence of, will not because heat exchange tube fluid heat release and condense.From 6 entrance of heat exchanger tube to 6 middle part of heat exchanger tube, because fluid seals in the past
First 1 enters in heat exchanger tube, and in the flowing of the front of heat exchanger tube 6, the vibration of fluid and noise are relatively smaller, therefore at this time can will be steady
The larger of the distance between device setting is flowed, damping both may be implemented and reduces noise, while resistance can also be reduced.But
Backward from the middle part of heat exchanger tube, because in the presence of the variation from heat exchanger tube 6 to the space of 9 this section of rear head from small to large, this
The variation of section will lead to quickly flowing upwards out and assemble for gas, and liquid also quickly can flow out and assemble in item lower part, therefore empty
Between variation will lead to the gas phase (air mass) of aggregation and enter end socket from tubesheet location, due to gas (vapour) liquid density contrast, air mass, which leaves, to be connect
Pipe position will move rapidly upward, and air mass original spatial position is pushed away the liquid of wall surface while also will be sprung back and hit rapidly by air mass
Wall surface is hit, water hammer is formed.Gas (vapour) liquid phase is more discontinuous, and air mass aggregation is bigger, and water hammer energy is bigger.Water hammer can be made
At the vibration of biggish noise and mechanical shock, equipment is damaged.Therefore in order to avoid the generation of this phenomenon, it is arranged at this time
Constant-current stabilizer length be continuously increased, thus constantly increase in fluid delivery process separate gas phase and liquid phase ability, from
And vibration and noise are reduced to the full extent.
Preferably, along the flow direction of heat exchange tube fluid, the width that the length of the constant-current stabilizer 5 gradually reduces
It spends increasing.
Preferably, the length of constant-current stabilizer 5 gradually get over by increased amplitude along the flow direction of heat exchange tube fluid
Come bigger.
It is found through experiments that, by being reduced simultaneously so set, 10% or so vibration and noise can be further decreased
The resistance of flowing 5% or so.
Preferably, the length of heat exchanger tube is L, a certain position is the middle position of heat exchanger tube length L.
As illustrated in figures 4-5, porous type constant-current stabilizer 5 is set in heat exchanger tube 6.The structure of the porous type constant-current stabilizer 5
See Fig. 3.As shown in figure 3, the constant-current stabilizer 5 includes core and shell 51, the core is arranged in shell 51, the shell
It is connected and fixed with heat transfer tube wall, the core is the integral structure part 53 extended along outer cover length direction, the structure
A number of through hole 52 is provided on part.
Porous type constant-current stabilizer is arranged in the present invention in heat exchanger tube, by multitube constant-current stabilizer by the liquid in two-phase fluid
It is mutually separated with gas phase, 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 the effect of vibration and noise reducing.Relative to multitube constant-current stabilizer, further
Steady flow result, augmentation of heat transfer are improved, 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 heat exchanger tube, enhanced
Heat exchange, 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.
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 52, 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 52 is realized by aperture.
Pass through setting aperture, it is ensured that interconnect between adjacent through hole, pressure that can uniformly between through hole
Power so that the fluid of high pressure runner flows to low pressure, while can also further separate liquid and gas while fluid flows,
Be conducive to further stablize two-phase flow.
Preferably, along the flow direction of heat exchange tube fluid, the multiple constant-current stabilizers of setting in heat exchanger tube, from heat exchanger tube
Entrance to the middle part of heat exchanger tube, the distance between adjacent constant-current stabilizer is increasingly longer, from the middle part of heat exchanger tube to heat exchanger tube
Outlet, the distance between adjacent constant-current stabilizer are shorter and shorter.I.e. the length of heat exchanger tube is L, the distance apart from heat exchange tube inlet
For X, the distance between adjacent constant-current stabilizer is S, S=F1(X), S ' is the first order derivative of S, meets following require:
S’>0, 0<=X<L/2;
S’<0, L/2<=X<=L;
Main cause is because containing on-condensible gas in fluid, and along the flow direction of fluid, on-condensible gas is still
In the presence of, will not because heat exchange tube fluid heat release and condense.From 6 entrance of heat exchanger tube to 6 middle part of heat exchanger tube, because fluid seals in the past
First 1 enters in heat exchanger tube, and in the flowing of the front of heat exchanger tube 6, the vibration of fluid and noise are relatively smaller, therefore at this time can will be steady
The larger of the distance between device setting is flowed, damping both may be implemented and reduces noise, while resistance can also be reduced.But
Backward from the middle part of heat exchanger tube, because in the presence of the variation from heat exchanger tube 6 to the space of 9 this section of rear head from small to large, this
The variation of section will lead to quickly flowing upwards out and assemble for gas, and liquid also quickly can flow out and assemble in item lower part, therefore empty
Between variation will lead to the gas phase (air mass) of aggregation and enter end socket from tubesheet location, due to gas (vapour) liquid density contrast, air mass, which leaves, to be connect
Pipe position will move rapidly upward, and air mass original spatial position is pushed away the liquid of wall surface while also will be sprung back and hit rapidly by air mass
Wall surface is hit, water hammer is formed.Gas (vapour) liquid phase is more discontinuous, and air mass aggregation is bigger, and water hammer energy is bigger.Water hammer can be made
At the vibration of biggish noise and mechanical shock, equipment is damaged.Therefore in order to avoid the generation of this phenomenon, it is arranged at this time
The distance between adjacent constant-current stabilizer it is shorter and shorter, to constantly separate gas phase and liquid phase in fluid delivery process, from
And vibration and noise are reduced 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 protect
Card reduces the flow resistance of fluid.
Further preferably, from the entrance of heat exchanger tube to the middle part of heat exchanger tube, the distance between adjacent constant-current stabilizer is increasingly
Long amplitude is continuously increased, and from the middle part of heat exchanger tube to the outlet of heat exchanger tube, the distance between adjacent constant-current stabilizer is increasingly
Short amplitude is continuously increased.That is S " is the second derivative of S, meets following require:
S”>0,0<=X<L/2;
S”>0, L/2<=X<=L;
It is found through experiments that, by being reduced simultaneously so set, 10% or so vibration and noise can be further decreased
The resistance of flowing 5% or so.
Preferably, the length of each constant-current stabilizer remains unchanged.
Preferably, other than the distance between adjacent constant-current stabilizer, constant-current stabilizer others parameter (such as length,
Caliber etc.) it remains unchanged.
Preferably, along the flow direction of fluid in heat exchanger tube 6, the multiple constant-current stabilizers 5 of setting in heat exchanger tube 6, from changing
For the entrance of heat pipe 6 to the middle part of heat exchanger tube 6, the length of constant-current stabilizer 5 is shorter and shorter, from the middle part of heat exchanger tube 6 to heat exchanger tube 6
Outlet, the length of constant-current stabilizer 5 are increasingly longer.I.e. the length of constant-current stabilizer is C, C=F2(X), C ' is the first order derivative of C, is met
It is following to require:
C’<0, 0<=X<L/2;
C’>0, L/2<=X<=L;
Further preferably, from the entrance of heat exchanger tube to the middle part of heat exchanger tube, the shorter and shorter amplitude of the length of constant-current stabilizer
It is continuously increased, from the middle part of heat exchanger tube to the outlet of heat exchanger tube, the increasingly longer amplitude of the length of constant-current stabilizer is continuously increased.I.e.
C " is the second derivative of C, meets following require:
C”>0,0<=X<L/2;
C”>0, L/2<=X<=L;
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 flow direction of fluid in heat exchanger tube 6, the multiple constant-current stabilizers of setting in heat exchanger tube 6, from heat exchange
The entrance of pipe 6 is to the middle part of heat exchanger tube 6, and the diameter of the through hole 52 in different constant-current stabilizers 5 is increasing, from heat exchanger tube
The diameter in portion to the outlet of heat exchanger tube, the through hole 52 in different constant-current stabilizers 5 is smaller and smaller.That is the through hole of constant-current stabilizer is straight
Diameter is D, D=F3(X), D ' is the first order derivative of D, meets following require:
D’>0, 0<=X<L/2;
D’<0, L/2<=X<=L;
Preferably, the perforation bore dia of constant-current stabilizer is increasing from the entrance of heat exchanger tube to the middle part of heat exchanger tube
Amplitude is continuously increased, from the middle part of heat exchanger tube to the outlet of heat exchanger tube, the smaller and smaller amplitude of the perforation bore dia of constant-current stabilizer
It is continuously increased.I.e.
D " is the second derivative of D, meets following require:
D”>0,0<=X<L/2;
D”>0, L/2<=X<=L。
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 4, groove is arranged inside the heat exchanger tube 6, the shell 51 of the constant-current stabilizer 5 is set
It sets in groove.
Preferably, the aligning inner of the inner wall of shell 51 and heat exchanger tube 6.By alignment, so that heat transfer tube wall face table
Reach on face in the same plane, guarantees the smooth of surface.
Preferably, the thickness of shell 51 is less than the depth of groove, heat transfer tube wall face can be made to form groove in this way,
To carry out augmentation of heat transfer.
Further there is choosing, as shown in figure 5, heat exchanger tube 6 is welded for multi-segment structure, the junction setting of multi-segment structure is steady
Flow device 5.This mode makes being simple to manufacture for the heat exchanger tube 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 10Mpa hereinafter, single heat exchange tube on-way resistance be less than or equal to 50Pa/M)
In the case where, so that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
The distance between adjacent constant-current stabilizer is S, and the length of constant-current stabilizer is C, and the outer diameter of heat exchanger tube is W, through hole
Radius 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 5 < a < 6,1.5 <b < 2.0；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;
15<C<23mm；
49<S<70mm。
1.05 < L1/(2*R) < 1.25；
5.5 < a < 5.6 in preferably, 1.75 <b < 1.85；3.0<c<3.05,0.34<d<0.36,5.0<e<5.2；
Further preferably, a=5.53, b=1.79, c=3.03, d=0.35, e=5.12.
It is preferred that 3.8 < W/(2*R) < 5.0；
Preferably, heat exchanger tube length L is between 3000-7500mm.Further preferably, between 4500-6000mm.
Further preferably, 40mm < W < 50mm；
9mm<2R <10mm;
18mm<C<20mm；
55mm<S<60mm。
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, with W/(2R) increase, a is continuously increased, and b constantly reduces.
For parameters such as other parameters, such as tube wall, shell wall thickness according to normal standard setting.
Preferably, fluid is water in shell side.
Preferably, tube side inner fluid speed 3-5m/S.
Preferably, the length L of heat exchanger tube and the diameter of the housing ratio of heat exchanger are 6-10.
Preferably, through hole 52 extends in the whole length direction of constant-current stabilizer 5.I.e. the length of through hole 52 is equal to steady
Flow the length of device 5.
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 (6)
1. a kind of biphase gas and liquid flow multitube shell-and-tube heat exchanger, including shell, end socket is respectively set in the shell both ends, described
Tube sheet is arranged in the link position of end socket and shell, and heat exchanger tube connects the tube sheet at both ends, the gas phase in stream-liquid two-phase flow be it is insoluble or
Person's slightly solubility gas, i.e., in heat transfer process, gas will not be dissolved in liquid, which is characterized in that be arranged in the heat exchanger tube for subtracting
The constant-current stabilizer of noise reduction is shaken, the multiple constant-current stabilizers of setting in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, institute
State constant-current stabilizer length first be gradually reduced to a certain position, then since a certain position constant-current stabilizer length again gradually
Increase；The constant-current stabilizer includes core and shell, and in the shell, the shell and heat transfer tube wall connect for the core setting
Fixation is connect, the core is the integral structure part extended along outer cover length direction, is provided with several numbers on the structural member
The through hole of amount, the through hole are round, the distance between adjacent through hole center of circle L1 > 2R, and wherein R is through hole half
Diameter.
2. shell-and-tube heat exchanger as described in claim 1, which is characterized in that along the flow direction of heat exchange tube fluid, institute
It is increasing to state the amplitude that the length of constant-current stabilizer gradually reduces.
3. shell-and-tube heat exchanger as described in claim 1, which is characterized in that along the flow direction of heat exchange tube fluid, surely
Gradually increased amplitude is increasing for the length of stream device.
4. shell-and-tube heat exchanger as described in claim 1, which is characterized in that the length of heat exchanger tube is L, and a certain position is
The middle position of heat exchanger tube length.
5. heat exchanger as described in claim 1, which is characterized in that aperture is arranged between adjacent through hole, is realized by aperture
Connection between through hole.
6. heat exchanger as claimed in claim 5, which is characterized in that heat exchanger tube is welded for multi-segment structure, multi-segment structure
Constant-current stabilizer is arranged in junction.
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| DE4318240C2 (en) * | 1993-06-02 | 1998-05-20 | Wieland Werke Ag | Steam heated heat exchanger |
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| CN204944237U (en) * | 2015-07-21 | 2016-01-06 | 天津霍普环保科技有限公司 | A kind of waste gas afterheat recovery unit |
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