CN107131781B - A kind of variation of length can not condensing body annular and separation device heat exchanger - Google Patents
A kind of variation of length can not condensing body annular and separation device heat exchanger Download PDFInfo
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- CN107131781B CN107131781B CN201710322140.4A CN201710322140A CN107131781B CN 107131781 B CN107131781 B CN 107131781B CN 201710322140 A CN201710322140 A CN 201710322140A CN 107131781 B CN107131781 B CN 107131781B
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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
- 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
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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
- 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
- F28D7/163—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of variation of length can not condensing body annular and separation device heat exchanger, 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, heat exchanger tube connects the tube sheet at 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, annular segmentation device of the setting for damping noise reduction in the heat exchanger tube, the multiple annular segmentation devices of setting in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, the length of the annular segmentation device is first gradually reduced to a certain position, then the length of segmenting device is again gradual since a certain position increases.The present invention provides a kind of length variation by segmenting device, 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 technology
Two phase flow heat transfer containing on-condensible gas is universally present in heat-exchanger rig, such as is mixed into heat transfer process
On-condensible gas, or because of the on-condensible gas that ageing equipment generates during fluid transport, also for example natural gas liquefaction is (main
It 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. to want ingredient) during different boiling blending agent
Condensation, air separation, azeotrope refrigeration, oil 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, can cause heat exchange efficiency low, deterioration is changed
Heat, process fluid flow is unstable, and can 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, to 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 applications destroy laminar sublayer by the way that bur is arranged, 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
Vibrations in heat exchanger and noise problem, and above-mentioned settling mode is complicated, and because of the dimensional problem of bur, nothing
Method ensures 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 segmenting device of Novel structure, to solve
Certainly above-mentioned problem.
The applicant also devises a kind of multitube segmenting device in applying in front, shown in Figure 7.But such dress
It sets and finds in operation, because being to be closely linked, therefore the space A formed between three pipes is relatively between pipe
Small, because the convex arc that space A is three pipes is formed, therefore most of regional space of space A is narrow, can 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
Together, manufacture is difficult for more tube combinations of above structure.
Invention content
The object of the present invention is to provide a kind of heat exchangers of the segmenting device 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 point for damping noise reduction is arranged in the heat exchanger tube
Device is cut, multiple segmenting devices are set in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, the segmenting device
Length be first gradually reduced to a certain position, then the length of segmenting device is again gradual since a certain position increases.
Preferably, along the flow direction of heat exchange tube fluid, width that the length of the segmenting device gradually reduces
It spends increasing.
Preferably, along the flow direction of heat exchange tube fluid, the length of segmenting device gradually get over by increased amplitude
Come bigger.
Preferably, the length of heat exchanger tube is L, a certain position is the centre position of heat exchanger tube length.
Preferably, the separating device 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 includes multiple concentric tubes and fin, and the fin connects adjacent concentric tube.
Preferably, intercommunicating pore is arranged on the concentric tube and fin.
Preferably, the extended line of the fin passes through the center of circle of concentric tube.
Preferably, heat exchanger tube is welded for multi-segment structure, segmenting device is arranged in the junction of multi-segment structure.
Preferably, the distance between adjacent separating device is S, the length of separating device is C, and the outer diameter of heat exchanger tube is W,
The radius of neighboring concentric pipe is respectively R2And R1, wherein R2>R1, the radian of the circular arc between adjacent fin is h, is met as follows
It is required that：
S/C=a-b*LN (W/E)；
E=((h*R2 2-h*R1 2)/2)1/2；
Wherein LN is logarithmic function, and a, b are parameters, wherein 16.1<a<17.2,7.9<b<8.8；
The spacing of wherein separating device is with opposite the distance between the both ends of adjacent separating device；
34<W<58mm；
7<E<12；
14<C<23mm；
50<S<70mm。
Preferably, a=16.5, b=8.4.
Compared with prior art, of the invention to have the following advantages：
1) flowing law of the invention according to the gas phase liquid phase in heat exchanger tube so that the length of the segmenting device 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 segmenting devices of Novel structure, detach two-phase fluid with respect to segmenting device
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 segmenting device, further increase
Steady flow result, augmentation of heat transfer, and be simple to manufacture.
3) present invention is equivalent to by setting segmenting device 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 be realized on entirely heat exchange tube section
The contact area of boundary layer and cooling wall simultaneously enhances disturbance, reduces noise and vibrations, enhances heat transfer.
5) present invention is by setting up the distance between adjacent segmentation device, the length of segmenting device 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 by the rule that exchanges heat caused by the variation to annular segmentation device parameters widely grind
Study carefully, meeting flow resistance, realizes the best relation formula of the effect of vibration and noise reducing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the two-phase flow tube shell type heat exchanger of the present invention；
Fig. 2 is the heat exchange tube structure schematic diagram of the two-phase flow tube shell type heat exchanger of the present invention；
Fig. 3 separating device structural schematic diagrams of the present invention；
Fig. 4 is separating device of the present invention arrangement schematic diagram in heat exchanger tube；
Fig. 5 is another schematic diagram that separating device of the present invention is arranged in heat exchanger tube.
Fig. 6 is that separating device of the present invention arranges cross-sectional view in heat exchanger tube.
Fig. 7 is the scale diagrams of separating device of the present invention.
Fig. 8 is the structural schematic diagram of the two-phase flow tube shell type heat exchanger in background technology.
Reference numeral is as follows：Front head 1, cover flange 2, front tube sheet 3, shell 4, separating device 5, heat exchanger tube 6, back tube sheet
7, cover flange 8, rear head 9, bearing 10, bearing 11, tube-side inlet pipe 12, tube side outlet 13, shell side inlet pipe 14, shell side
Outlet 15, separating device shell 51, annular distance 52, fin 53, concentric tube 54
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, it is related to formula, "/" indicates that division, "×", " * " indicate multiplication.
It should be noted that if without specified otherwise, the two phase flow that the present invention mentions is biphase gas and liquid flow, gas herein
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 take over 14 and shell-side outlet take over 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 take over 14 and shell-side outlet take over 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.
Segmenting device 5 of the setting for damping noise reduction in the heat exchanger tube 6, the interior multiple segmentations of setting of 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 segmenting device 5 is first gradually reduced to a certain position, and then the length of segmenting device is again since a certain position
It is gradual to increase.
Main cause is because containing on-condensible gas in fluid, therefore 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 vibrations of fluid and noise are relatively smaller, therefore can will divide at this time
The larger of the distance between device setting is cut, 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 can cause quickly flowing upwards out and assemble for gas, liquid also quickly can flow out and assemble in item lower part, therefore empty
Between variation can cause aggregation gas phase (air mass) 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 larger noise vibrations and mechanical shock, equipment is damaged.Therefore in order to avoid the generation of this phenomenon, it is arranged at this time
Segmenting device length be continuously increased, to constantly increase in fluid delivery process separate gas phase and liquid phase ability, from
And vibrations and noise are reduced to the full extent.
Preferably, along the flow direction of heat exchange tube fluid, width that the length of the segmenting device 5 gradually reduces
It spends increasing.
Preferably, along the flow direction of heat exchange tube fluid, the length of segmenting device 5 gradually get over by increased amplitude
Come bigger.
It is found through experiments that, by so set, 10% or so vibrations and noise can be further decreased, reducing simultaneously
The resistance of flowing 5% or so.
Preferably, the length of heat exchanger tube is L, a certain position is the centre position of heat exchanger tube length L.
As illustrated in figures 4-5, the setting annular and separation device 5 in heat exchanger tube 6.The structure of the annular and separation device 5 is shown in figure
3.As shown in figure 3, the separating device 5 includes core and shell 51, the core is arranged in shell 51, the shell with change
Heat pipe inner wall is connected and fixed, and the core includes multiple concentric tubes 54 and fin 53, and the fin 53 connects adjacent concentric tube
54.It is limited between the concentric tube 54 that adjacent fin 53 and its fin 53 connect and forms annular distance 52.
Annular and separation device is arranged in the present invention in heat exchanger tube, by multitube separating device by the liquid phase in two-phase fluid
It is detached 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 separating device, further carry
High steady flow result, augmentation of heat transfer, and be simple to manufacture.
The present invention is equivalent to by the way that annular and separation device is arranged and increases interior heat exchange area in heat exchanger tube, enhance and change
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, to 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 vibrations, enhances heat transfer.
Preferably, preferably, intercommunicating pore is arranged on the concentric tube 54 and/or fin 53.
Intercommunicating pore is set between adjacent annular distance, the connection between annular distance 52 is realized by intercommunicating pore.
Pass through and intercommunicating pore is set, it is ensured that it is interconnected between adjacent annular distance, pressure that can uniformly between annular distance,
It so that the fluid of high pressure runner flows to low pressure, while can also further separate liquid and gas while fluid flows, have
Stablize two-phase flow conducive to further.
Preferably, the extended line of the fin passes through the center of circle of concentric tube.
Preferably, along the flow direction of heat exchange tube fluid, the multiple separating devices of setting in heat exchanger tube, from heat exchanger tube
Entrance to the middle part of heat exchanger tube, the distance between adjacent separating device is increasingly longer, from the middle part of heat exchanger tube to heat exchanger tube
Outlet, the distance between adjacent separating device 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 separating device 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, therefore 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 vibrations of fluid and noise are relatively smaller, therefore can will divide at this time
Every the larger of the distance between device setting, damping both may be implemented and reduced 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 can cause quickly flowing upwards out and assemble for gas, liquid also quickly can flow out and assemble in item lower part, therefore empty
Between variation can cause aggregation gas phase (air mass) 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 larger noise vibrations 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 separating device it is shorter and shorter, to constantly separate gas phase and liquid phase in fluid delivery process, from
And vibrations and noise are reduced to the full extent.
It is found through experiments that, by above-mentioned setting, can both reduce vibrations 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 separating device 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 separating device 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 so set, 10% or so vibrations and noise can be further decreased, reducing simultaneously
The resistance of flowing 5% or so.
Preferably, the length of each separating device remains unchanged.
Preferably, other than the distance between adjacent separating device, separating device others parameter (such as length,
Caliber etc.) it remains unchanged.
Preferably, along the flow direction of fluid in heat exchanger tube 6, the multiple separating devices 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 separating device 5 is shorter and shorter, from the middle part of heat exchanger tube 6 to heat exchanger tube 6
The length of outlet, separating device 5 is increasingly longer.I.e. the length of separating device is C, C=F2(X), C ' is the first order derivative of C, full
Foot is following to be required：
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 separating device
It is continuously increased, from the middle part of heat exchanger tube to the outlet of heat exchanger tube, the amplitude that the length of separating device is increasingly longer 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 separating device of specific reason is identical.
Preferably, the distance between adjacent separating device remains unchanged.
Preferably, the length in addition to separating device is outside one's consideration, separating device others parameter (such as adjacent spacing, caliber
Deng) remain unchanged.
Preferably, along the flow direction of fluid in heat exchanger tube 6, the multiple separating devices 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 hydraulic diameter of the annular distance 52 in different separating devices 5 is increasing, from heat exchanger tube
The hydraulic diameter at middle part to the outlet of heat exchanger tube, the annular distance 52 in different separating devices 5 is smaller and smaller.That is the annular distance of separating device
Hydraulic diameter be 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, from the entrance of heat exchanger tube to the middle part of heat exchanger tube, the annular distance hydraulic diameter of separating device is increasing
Amplitude be continuously increased, from the middle part of heat exchanger tube to the outlet of heat exchanger tube, the annular distance hydraulic diameter of separating device is smaller and smaller
Amplitude 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 separating device of specific reason is identical.
Preferably, the length of separating device and the distance of adjacent separating device remain unchanged.
Preferably, other than the annular distance hydraulic diameter of separating device, separating device others parameter (such as length, phase
The distance between adjacent separating device etc.) it remains unchanged.
Further preferably, as shown in figure 4, groove is arranged in 6 inside of the heat exchanger tube, the shell 51 of the separating device 5 is set
It sets in groove.
Preferably, the aligning inner of the inner wall of shell 51 and heat exchanger tube 6.Pass through alignment so that heat transfer tube wall face table
Reach on face in the same plane, ensures 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 point of multi-segment structure
Every device 5.This mode makes being simple to manufacture for the heat exchanger tube that separating device is arranged, cost reduction.
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, the diameter of annular distance can not it is excessive or
Too small, 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, preferentially full
The normal flow resistance of foot (total pressure-bearing be 10Mpa hereinafter, the on-way resistance of single heat exchange tube be less than or equal to 50Pa/M)
In the case of so that being optimal of damping noise reduction has arranged the best relationship of parameters.
The distance between adjacent separating device is S, and the length of separating device is C, and the outer diameter of heat exchanger tube is W, neighboring concentric
Pipe 2 of arbitrary neighborhood (such as in 3 concentric tubes in Fig. 6) radius is respectively R2And R1, wherein R2>R1And/or shell
51 and the radius of adjacent concentric tube are respectively R2And R1, (such as the radius of the shell 51 in Fig. 6 is R2, what is be connected with shell is same
The radius of heart pipe is R1), the radian of the circular arc between adjacent fin is h, meets following require：
S/C=a-b*LN (W/E)；
E=((h*R2 2-h*R1 2)/2)1/2；
Wherein LN is logarithmic function, and a, b are parameters, wherein 16.1<a<17.2,7.9<b<8.8；
34<W<58mm；
7<E<12；
14<C<23mm；
50<S<70mm。
Preferably, 16.3<a<16.6,8.2<b<8.5.
The interval S of wherein separating device is with opposite the distance between the both ends of adjacent separating device；I.e. front separates dress
The distance between the front end of the tail end set and separating device below.Referring specifically to the mark of Fig. 4.
Shell 51 is actually considered as outermost concentric tube to participate in calculating together in above formula.
Radian h is the radian limited with the medium line of fin 53, referring to Fig. 7；The radius of concentric tube is respectively R2And R1Be with
The internal diameter of concentric tube and the average value of outer diameter calculate.
Further preferably, a=16.5, b=8.4.
Preferably, heat exchanger tube length L is between 3000-7500mm.Further preferably, between 4500-6000mm.
Further preferably, 40mm<W<50mm；
18mm<C<20mm；
55mm<S<60mm。
By the preferred of the best geometric scale of above-mentioned formula, can realize under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Preferably, concentric tube is 2-3.
Further preferably, as the increase of W/E, a are continuously increased, 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, concentric tube and fin extend in the whole length direction of separating device 5.I.e. concentric tube and fin and
The length of the annular distance 52 formed between concentric tube and fin is equal to the length of separating 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 subject to claim limited range.
Claims (3)
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 for subtracting in the heat exchanger tube
The segmenting device of noise reduction is shaken, multiple segmenting devices are set in same root heat exchanger tube, along the flow direction of heat exchange tube fluid, institute
The length first gradual reduction of segmenting device is stated, then the length of segmenting device is again gradual since a certain position increases；It changes
The length of heat pipe is L, and a certain position is the centre position of heat exchanger tube length L；The segmenting device includes core and shell,
In the shell, the shell is connected and fixed with heat transfer tube wall, and the core includes multiple concentric tubes and rib for the core setting
Piece, the fin connect adjacent concentric tube.
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 segmenting device 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, divide
Cutting the length of device, gradually increased amplitude is increasing.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858213.6A CN109115007B (en) | 2017-05-09 | 2017-05-09 | Shell and tube heat exchanger |
| CN201710322140.4A CN107131781B (en) | 2017-05-09 | 2017-05-09 | A kind of variation of length can not condensing body annular and separation device heat exchanger |
| CN201810858517.2A CN109141078A (en) | 2017-05-09 | 2017-05-09 | A kind of biphase gas and liquid flow heat exchanger tube annular separating device of pressure equilibrium |
| CN201810858563.2A CN108981428B (en) | 2017-05-09 | 2017-05-09 | A kind of method of the biphase gas and liquid flow heat exchanger of length planning and designing |
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| CN201810858517.2A Division CN109141078A (en) | 2017-05-09 | 2017-05-09 | A kind of biphase gas and liquid flow heat exchanger tube annular separating device of pressure equilibrium |
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| CN201710322140.4A Active CN107131781B (en) | 2017-05-09 | 2017-05-09 | A kind of variation of length can not condensing body annular and separation device heat exchanger |
| CN201810858213.6A Active CN109115007B (en) | 2017-05-09 | 2017-05-09 | Shell and tube heat exchanger |
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| CN107816345A (en) * | 2017-10-09 | 2018-03-20 | 中国石油天然气集团公司 | A kind of apparatus and method of well casing gas tolerance metering |
| 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 |
| CN110864567B (en) * | 2018-07-20 | 2020-11-24 | 山东大学 | Balanced flow design method for digital variable heat exchanger |
| CN111678366B (en) * | 2020-04-23 | 2021-11-19 | 山东建筑大学 | Heat storage shell-and-tube heat exchanger and leakage detection method |
| CN113105924A (en) * | 2021-04-16 | 2021-07-13 | 广东韶钢松山股份有限公司 | Coke oven gas oil washing and deslagging device |
| CN115682781B (en) * | 2022-12-28 | 2023-03-31 | 上海阿美泰克工业设备苏州股份有限公司 | All-welded heat exchanger |
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Also Published As
| Publication number | Publication date |
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| CN107131781A (en) | 2017-09-05 |
| CN109141078A (en) | 2019-01-04 |
| CN108981428A (en) | 2018-12-11 |
| CN109115007B (en) | 2020-08-07 |
| CN108981428B (en) | 2019-09-17 |
| CN109115007A (en) | 2019-01-01 |
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