CN106679466B - A kind of Porous Media Two phase Flow shell-and-tube heat exchanger and its stabilising arrangement - Google Patents
A kind of Porous Media Two phase Flow shell-and-tube heat exchanger and its stabilising arrangement Download PDFInfo
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- CN106679466B CN106679466B CN201710075743.9A CN201710075743A CN106679466B CN 106679466 B CN106679466 B CN 106679466B CN 201710075743 A CN201710075743 A CN 201710075743A CN 106679466 B CN106679466 B CN 106679466B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- 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
- F28D7/1669—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 the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube
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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
Abstract
The invention provides a kind of two-phase flow tube shell type heat exchanger, including housing, the housing two ends set end socket respectively, two phase flow fluid inlet tube is set at least one described end socket, Porous Media Two phase Flow stabilising arrangement is set in fluid inlet tube, and the two phase flow stabilising arrangement includes porous media core body, and the porous media core body is to be connected to form by a number of club, club forms the porous media structure of hole intercommunication in X, Y, Z three-dimensional cross weld.Passive two-phase flow stabilising arrangement of the present invention with vibration and noise reducing function can be in the case of independent of external impetus or power supply, two-phase fluid is separated into liquid and gas, liquid phase is divided into small liquid group, gas phase is divided into minute bubbles, suppress the backflow of liquid phase, promote gas phase smooth outflow, play a part of regime flow, the effect with vibration and noise reducing.
Description
Technical field
The present invention relates to a kind of two-phase flow heat-exchanger rig and its stabilising arrangement, and in particular to one kind, which has, weakens flow duct
Road vibration, the two-phase flow stabilising arrangement of reduction noise level function.
Background technology
Two-phase flow and wild effect are universally present in heat-exchanger rig, scientific experiment device and the equipment of industrial product
In, for example fluid, which enters heat transmission equipment, can produce water hammer caused by space enlargement, be both that, because substantial amounts of produce, can also dislike
Change heat exchange.When the phase of two-phase working substance is not mixed uniformly and is discontinuously flowed, large-sized liquid group can occupy at high speed
Vapour group space, causes two-phase flow unstable, so that tempestuously impact device and pipeline, produces sharp pounding and noise, seriously
Ground threatens equipment operation safety.It is, towards forced circulation loop, to solve single-phase water mostly that existing water hammer, which eliminates or alleviated device,
Hammer problem, concentrates on water hammer-resistant check-valves industrial circle, such as a kind of " impeller type water hammer-resistant mute check valve " (patent No.：
ZL200910214544.7), there is provided the labyrinth such as radome fairing, baffle and spring, can not consider flow resistance factor, solve
The single-phase water hammer produced during closure of check ring.Multiphase flow rectifying device for example disclosed in CN101639374A again, wherein setting
Put multitube pipe, said structure is complicated, take material, cost height, effect is poor, therefore the need for being gradually not suitable with energy-conserving and environment-protective.
In view of the above-mentioned problems, the invention provides a kind of stable dress of the two phase flow of new heat-exchanger rig and its Novel structure
Put, so that the problem of solving above-mentioned.
The content of the invention
It is an object of the invention to provide a set of new heat-exchanger rig and two-phase flow stabilising arrangement, there is two in pipeline
When mutually flowing, weaken the vibration of pipeline, reduce noise level, while improving heat-exchange capacity.
To achieve these goals, technical scheme is as follows：
A kind of two-phase flow tube shell type heat exchanger, including housing, the housing two ends set end socket respectively, it is described at least one
Two phase flow fluid inlet tube is set on end socket, Porous Media Two phase Flow stabilising arrangement, the two-phase are set in fluid inlet tube
Flowing stabilising arrangement includes porous media core body, and the porous media core body is to be connected to form by a number of club, rod
Shape thing forms the porous media structure of hole intercommunication in X, Y, Z three-dimensional cross weld.
Preferably, described hole is square.
A kind of telescopic two phase flow stabilising arrangement being arranged in Two-phase Flow Pipeline Transport, including porous media core body are described more
Hole dielectric core is to be connected to form by a number of club, and club is formd in X, Y, Z three-dimensional cross weld
The porous media structure of hole intercommunication.
Preferably, described hole is square.
Preferably, the cross section of the club is circular or square.
Preferably, X, Y-direction are arranged on cross-section of pipeline, direction of the Z-direction along the axis of pipeline, then along stream
On body flow direction, the distance between club parallel with Y-direction with X is increasing.
Preferably, then along on fluid flow direction, the distance between club parallel with Y-direction with X is increasingly
Big amplitude constantly increases.
Preferably, the sectional area of small flow channels meets following relationship：
AI, on≤AI, under (2)
In formula, Ai is the circulation area of i-th of small flow channels, and unit is mm2；N is small flow channels quantity；ηAFor area ratio, according to
Line size and mobility status, are obtained by optimization experiment, see empirical equation 3, ηA<1；A0For the circulation area of pipeline, unit is
mm2.Wherein, the mathematical meaning of formula (1) is that the sectional area summation of whole pipes is more than or equal to the η of pipeline sectionATimes；Formula (2) is
The sectional area of upper strata pipe is less than or equal to the sectional area of lower floor's pipe.
Foregoing stabilising arrangement is set in a kind of Two-phase Flow Pipeline Transport, the pipeline, and the stabilising arrangement is in pipeline
The arrangement at interval is taken, in compartment arrangement, length, the distance at interval of core meet following relationship：
Li≥Li,0 (4)
Xi≤Xi,0 (5)
In formula, LiFor the length of i-th of core body, unit is mm；Li,0For the minimum allowable length of i-th of core body, unit is
Mm, is obtained by testing, sees empirical equation 7；N is the quantity of core body；XiFor the distance at i-th of interval, unit is mm；XI, 0For
The permission ultimate range at i-th of interval, unit is mm, is obtained by testing, sees empirical equation 8；M is the quantity at interval；ηLFor
Length ratio, according to line size and mobility status, is obtained by optimization experiment, sees empirical equation 9, ηL≤ 1, wherein, formula (6)
Mathematical meaning is the η of duct length that is more than of length summation of whole core bodysLTimes.
A kind of two-phase flow tube shell type heat exchanger, including housing, the housing two ends set end socket respectively, it is described at least one
Two phase flow fluid inlet tube, the inlet porting pipe flange on fluid inlet tube, the entrance pipe flange and pipeline are set on end socket
Flange is connected, it is characterised in that to chuck cartridge type two phase flow stabilising arrangement, described two between entrance pipe flange and pipe flange
Mutually stream stabilising arrangement includes porous media core body, and the porous media core body is to be connected to form by a number of club,
Club forms the porous media structure of hole intercommunication in X, Y, Z three-dimensional cross weld.
Compared with prior art, it is of the invention to have the following advantages：
1) the passive two-phase flow stabilising arrangement with vibration and noise reducing function can be independent of external impetus or power supply
In the case of, two-phase fluid is separated into liquid and gas, liquid phase is divided into small liquid group, gas phase is divided into minute bubbles, is pressed down
The backflow of liquid phase processed, promotes gas phase smooth outflow, plays a part of regime flow, the effect with vibration and noise reducing.
2) present invention is arranged in the inlet tube of two phase flow heat transfer device, gas phase can will be divided into minute bubbles, it is to avoid
The increase of gas phase, promotes gas phase smooth outflow, it is ensured that the gas phase entered in the heat exchanger tube of heat exchanger is uniform, enables to heat exchange equal
It is even, it is to avoid local temperature is too high or too low, so as to improve heat transfer effect.
3) core is the core component of passive two-phase flow stabilising arrangement, can separate the single big runner of pipeline
Into a number of small flow channels.Wherein, the sectional area of small flow channels meets formula (1) above, (2), (3), meets above-mentioned relation,
Advantageously ensure that and two-phase fluid is separated into liquid and gas, liquid phase is divided into small liquid group, gas phase is divided into minute bubbles
Effect.
4) porous media core body is connected by a number of club and formed, and forms porous Jie of saturation of hole intercommunication
Matter structure, preferably, Area comparison is big, the structure with hole intercommunication, favorably for the advantage of comprehensive other core bodys, such as shock resistance
In further stable two-phase flow.
5) in compartment arrangement, length, the distance at interval of core meet formula (4), (5), (6), have
Regrouped beneficial to the minute bubbles and small liquid group prevented after segmentation, suppress the backflow of liquid phase, promote gas phase smooth outflow, improve steady
The action effect of constant flow.
6) for wafer type core body fixed form, pipeline external environment and interface are not influenceed, with dismount it is simple the characteristics of,
Both new device is can be suitably used for, plant modification is can be suitably used for again.
Brief description of the drawings
Fig. 1 is the structural representation of the two phase flow heat transfer device of the present invention；
Fig. 2 is the structural representation of the two phase flow stabilising arrangement of the present invention；
Fig. 3 two phase flow stabilising arrangement discontinuous arrangement schematic diagrames of the present invention；
Fig. 4 is two phase flow stabilising arrangement mounting means schematic diagram of the present invention.
Reference is as follows：Core body 1, pipeline 2, concentric tube 3, hole 4, housing 5, end socket 6,7, inlet tube 8,
Outlet 9, heat exchanger tube 10
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, being related to formula, "/" represents division, and "×", " * " represent multiplication.
The long measure for not having the parameter in specified otherwise, the application is mm, and square measure is mm2。
Fig. 2 illustrates a kind of telescopic two phase flow stabilising arrangement being arranged in Two-phase Flow Pipeline Transport 2, including porous media core
Body 1, the porous media core body 1 is to be connected to form by a number of club 3, and club 3 is handed in X, Y, Z three-dimensional
Fork connection, forms the porous media structure of the intercommunication of hole 4.
Above-mentioned two-phase flow stabilising arrangement can be in the case of independent of external impetus or power supply, by two-phase fluid point
From into liquid and gas, liquid phase is divided into small liquid group, gas phase is divided into minute bubbles, suppresses the backflow of liquid phase, promotes gas phase
Smooth outflow, plays a part of regime flow, the effect with vibration and noise reducing.
Compared with CN101639374A, the present invention is to provide the three-dimensional structure of hole intercommunication, with circulation area it is larger,
Resistance under the less advantage of resistance, same traffic reduces more than 30%；Possess good shock resistance, can be applied to
The telecontrol equipments such as ship.
Porous media core body is connected by a number of club to be formed, and forms the saturated porous media of hole intercommunication
Structure, all cavities are all interconnected, and preferably, Area comparison is big, have for the advantage of comprehensive other core bodys, such as shock resistance
The structure of hole intercommunication, circulating resistance is small, is conducive to further stablizing two-phase flow.
Interconnected by multiple holes, it is ensured that adjacent runner is interconnected, pressure that can be between uniform flow path
Power so that the fluid of high pressure runner flows to low pressure, while can also further separate liquid and gas while flow of fluid,
Be conducive to further stablizing two-phase flow.
Preferably, porous media structure is to be integrally formed.
Preferably, welding forms porous media structure to rod dress thing 3 mutually.
Preferably, described hole 4 is square.
Preferably, the cross section of the club is circular or square, it is more preferably square.
Preferably, X, Y-direction are arranged on cross-section of pipeline, direction of the Z-direction along the axis of pipeline, then along stream
On body flow direction, the distance between club parallel with Y-direction with X is increasing.I.e. shown in Fig. 2, along the axis of pipeline 2
Direction on, the interval between vertical with conduit axis rod dress thing is increasing.
It is found through experiments that, it is increasing by the distance between adjacent rod dress thing 3, it on the one hand can reduce flowing resistance
Power, saves material, while can substantially reach the effect of the regime flow of effect same, vibration and noise reducing.Relative to normal
Set, being capable of cost-effective 10% or so, reduction 15-20% or so flow resistance.
Preferably, then along on fluid flow direction, the distance between club parallel with Y-direction with X is increasingly
Big amplitude constantly increases.
It is found through experiments that, by being arranged such, can further reduces about 5% or so flow resistance, effect base
Keep constant on this.
Preferably, the sectional area of small flow channels meets following relationship：
AI, on≤AI, under (2)
In formula, Ai is the circulation area of i-th of small flow channels, and unit is mm2；N is small flow channels quantity；ηAFor area ratio, according to
Line size and mobility status, are obtained by optimization experiment, see empirical equation 3, ηA<1；A0For the circulation area of pipeline, unit is
mm2.Wherein, the mathematical meaning of formula (1) is that the sectional area summation of whole pipes is more than or equal to the η of pipeline sectionATimes；Formula (2) is
The sectional area of upper strata pipe is less than or equal to the sectional area of lower floor's pipe.
Above-mentioned formula is the result by substantial amounts of experiment, and calculates the optimal result obtained by substantial amounts of, is met
Above-mentioned relation, can ensure two-phase fluid being separated into liquid and gas in optimum degree, and liquid phase is divided into small liquid group, will
Gas phase is divided into the effect of minute bubbles.
Preferably, the invention provides a kind of two-phase flow tube shell type heat exchanger, as shown in figure 1, the heat exchanger includes
Housing 5, the housing two ends are set respectively sets two phase flow fluid inlet tube 8 on end socket 6,7, one of end socket,
Telescopic two phase flow stabilising arrangement as shown in Figure 2 is set in fluid inlet tube 8 and/or fluid outlet pipe.
The present invention is arranged in the inlet tube 8 of two phase flow heat transfer device, gas phase minute bubbles can will be divided into, it is to avoid gas
The increase of phase, promotes gas phase smooth outflow, it is ensured that the gas phase entered in the heat exchanger tube of heat exchanger is uniform, enables to heat exchange equal
It is even, it is to avoid local temperature is too high or too low, so as to improve heat transfer effect.
Further preferably, foregoing stable dress is set the invention discloses a kind of Two-phase Flow Pipeline Transport, in the pipeline
Put, the stabilising arrangement takes the arrangement at interval in pipeline, in compartment arrangement, the length of core,
The distance at interval meets following relationship：
Li≥Li,0 (4)
Xi≤Xi,0 (5)
In formula, LiFor the length of i-th of core body, unit is mm；Li,0For the minimum allowable length of i-th of core body, unit is
Mm, is obtained by testing, sees empirical equation 7；N is the quantity of core body；XiFor the distance at i-th of interval, unit is mm；XI, 0For
The permission ultimate range at i-th of interval, unit is mm, is obtained by testing, sees empirical equation 8；M is the quantity at interval；ηLFor
Length ratio, according to line size and mobility status, is obtained by optimization experiment, sees empirical equation 9, ηL≤ 1, wherein, formula (6)
Mathematical meaning is the η of duct length that is more than of length summation of whole core bodysLTimes.
Above-mentioned formula is the result by substantial amounts of experiment, and calculates the optimal result obtained by substantial amounts of, is met
Above-mentioned relation, can prevent the minute bubbles after segmentation and small liquid group from regrouping in optimum degree, suppress the backflow of liquid phase, promote
Make gas phase smooth outflow, improve the action effect of regime flow.
Preferably, along the flow direction of two phase flow, Xi<Xi+1, wherein XiIt is the distance at i-th of interval, Xi+1I+1
The distance at individual interval.
Preferably, along the flow direction of two phase flow, Li>Li+1, wherein LiIt is the length of i-th of core body, Li+1I+1
The length of individual core body.
It is found through experiments that, by setting the optimal design-aside of the length of core body and the distance at core body interval, can saves
Material, reduces cost, and can reach essentially identical effect.
The present invention and disclose a kind of mounting means of two phase flow stabilising arrangement, as shown in figure 4, for wafer type core body consolidate
Determine mode, first core (normal length is smaller) is placed between two segment pipes, then by core to being clipped in two sections of pipes
It is fixed between road (such as bolt fastening).
Further preferably, described two-phase flow tube shell type heat exchanger, the inlet porting pipe flange on fluid inlet tube is described
Entrance pipe flange and pipe flange connection, to pressing from both sides foregoing telescopic two phase flow between entrance pipe flange and pipe flange
Stabilising arrangement.
For wafer type core body fixed form, pipeline external environment and interface are not influenceed, with dismount it is simple the characteristics of, both
New device is can be suitably used for, plant modification is can be suitably used for again.
Preferably, the pipeline 2 can be independent part, for example, need to set only for the mounting means in Fig. 4
Vertical pipeline, can also directly be fluid line, for example, be set directly in the inlet tube of heat exchanger.
In Fig. 4,1a is core body covering, constitutes pressure boundary, realizes HTHP sealing function.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (10)
1. a kind of two-phase flow tube shell type heat exchanger, including housing, the housing two ends set end socket respectively, at least one end socket
Two phase flow fluid inlet tube is set, it is characterised in that Porous Media Two phase Flow stabilising arrangement is set in fluid inlet tube, it is described
Two phase flow stabilising arrangement includes porous media core body, the porous media core body be connected by a number of club and
Into club forms the porous media structure of hole intercommunication in X, Y, Z three-dimensional cross weld.
2. heat exchanger as claimed in claim 1, it is characterised in that described hole is square.
3. a kind of telescopic two phase flow stabilising arrangement being arranged in Two-phase Flow Pipeline Transport, including porous media core body, described porous
Dielectric core is to be connected to form by a number of club, and club forms hole in X, Y, Z three-dimensional cross weld
The porous media structure of hole intercommunication.
4. stabilising arrangement as claimed in claim 3, it is characterised in that described hole is square.
5. stabilising arrangement as claimed in claim 3, it is characterised in that the cross section of the club is circular or square
Shape.
6. stabilising arrangement as claimed in claim 3, it is characterised in that X, Y-direction are arranged on cross-section of pipeline, Z-direction edge
The direction of the axis of pipeline, then along on fluid flow direction, the distance between club parallel with Y-direction with X is more next
It is bigger.
7. stabilising arrangement as claimed in claim 6, it is characterised in that flat with X and Y-direction then along on fluid flow direction
The increasing amplitude of the distance between capable club constantly increases.
8. stabilising arrangement as claimed in claim 3, it is characterised in that the sectional area of small flow channels meets following relationship：
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In formula, Ai is the circulation area of i-th of small flow channels, and unit is mm2；N is small flow channels quantity；ηAFor area ratio,
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9. the stabilising arrangement described in one of claim 3-8, the stabilising arrangement are set in a kind of Two-phase Flow Pipeline Transport, the pipeline
The arrangement at interval is taken in pipeline, in compartment arrangement, under the length of core, the distance at interval are met
Row relation：
Li≥Li,0 (4)
Xi≤Xi,0 (5)
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10. a kind of two-phase flow tube shell type heat exchanger, including housing, the housing two ends set end socket respectively, at least one end socket
Upper setting two phase flow fluid inlet tube, the inlet porting pipe flange on fluid inlet tube, the entrance pipe flange and pipe flange
Connection, it is characterised in that to chuck cartridge type two phase flow stabilising arrangement, the two phase flow between entrance pipe flange and pipe flange
Stabilising arrangement includes porous media core body, and the porous media core body is to be connected to form by a number of club, bar-shaped
Thing forms the porous media structure of hole intercommunication in X, Y, Z three-dimensional cross weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710075743.9A CN106679466B (en) | 2017-02-13 | 2017-02-13 | A kind of Porous Media Two phase Flow shell-and-tube heat exchanger and its stabilising arrangement |
Applications Claiming Priority (1)
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| CN106969652B (en) * | 2017-05-09 | 2019-03-19 | 山东大学 | A kind of condensable annular and separation device heat exchanger of length variation |
| CN106979709B (en) * | 2017-05-09 | 2019-03-19 | 山东大学 | A kind of condensable annular and separation device heat exchanger of spacing variation |
| CN107036478B (en) * | 2017-05-09 | 2019-02-26 | 山东大学 | A kind of annular and separation device heat exchanger containing on-condensible gas |
| CN108344316B (en) * | 2018-02-09 | 2024-01-30 | 西安热工研究院有限公司 | Efficient compact heat exchanger for heat exchange between gas-liquid two-phase carbon dioxide and water |
| CN110631267B (en) * | 2018-07-07 | 2021-02-23 | 青岛乾福圣耀商贸有限公司 | Solar water heater |
| US11213923B2 (en) * | 2018-07-13 | 2022-01-04 | General Electric Company | Heat exchangers having a three-dimensional lattice structure with a rounded unit cell entrance and methods of forming rounded unit cell entrances in a three-dimensional lattice structure of a heat exchanger |
| CN109612308B (en) * | 2018-12-18 | 2020-03-17 | 青岛吉云德和商贸有限公司 | Shell-and-tube heat exchanger for liquid medicine used for fumigation |
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| CN101725740A (en) * | 2009-12-31 | 2010-06-09 | 广东联塑科技实业有限公司 | Impeller type water hammer-resistant mute check valve |
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