CN106782697A - A kind of compact heat exchanger - Google Patents
A kind of compact heat exchanger Download PDFInfo
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- CN106782697A CN106782697A CN201611051659.5A CN201611051659A CN106782697A CN 106782697 A CN106782697 A CN 106782697A CN 201611051659 A CN201611051659 A CN 201611051659A CN 106782697 A CN106782697 A CN 106782697A
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- shell
- heat exchanger
- inner casing
- heating surface
- outlet
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a kind of heat exchanger, the heat exchanger includes tube side side and shell side side, the tube side side includes inlet tube, inlet plenum, heating surface bank, outlet chamber and outlet, and the hot fluid enters inlet plenum, passes sequentially through heating surface bank, outlet chamber and outlet from inlet tube；The shell side side includes intake channel, inner casing, shell and outlet chamber, the cold fluid passes sequentially through space and the outlet chamber that intake channel, inner casing and shell are limited, inlet plenum, heating surface bank, outlet chamber are arranged in the space that inner casing and shell are limited, the inner casing and shell are arcuation arrangements, the curved arrangement of described heating surface bank, the arc and inner casing of the heating surface bank, the arc of shell have the identical center of circle.The heat-exchanging tube bundle of present invention heat exchanger is arcuate structure, and there is identical arcuate structure with inner casing and shell, can freely be expanded with heat and contract with cold in the space of inner casing and shell, therefore the applicable temperature range of heat-exchanging tube bundle and liquid scope are more extensive, and the range of application of heat exchanger has been expanded significantly.
Description
Technical field
The invention belongs to field of heat exchangers, be related to a kind of shell-and-tube heat exchanger, more particularly to a kind of low flow resistance, close-coupled,
Residual heat removal heat exchanger with natural-circulation capacity higher and security.
Background technology
Residual heat removal heat exchanger is the heat exchange hinge of residual heat removal system, is to be related to the important of plurality of devices to set
It is standby, such as the safety of the reactor shutdown in nuclear reaction.At present, Generation Ⅲ and advanced Marine Nuclear Power Plant are filled in the world
Put and generally employ Heat Discharging System of Chinese, further to improve inherent safety, this requires Residual heat removal cooler
Flow resistance is tried one's best low to improve natural circulation flow, and atomic marine plant also requires that Residual heat removal cooler compact volume is small to save
About heap cabin arrangement space.Most of existing Residual heat removal cooler is arranged in containment or heap cabin, and residual heat of nuclear core is drained into most
Whole low-temperature receiver also needs to the c-type Residual heat removal heat exchanger of the nuclear power technology for being used by a heat exchange, such as U.S. AP1000 again, cloth
Put in containment cooling water tank cooling water, cooling water evaporation there could be heat derives containment in the condensation of containment shell wall
Runner is improved on the basis of traditional heat exchangers for a little Residual heat removal coolers and flow adapts it to natural cycle system, still retain
There is shell-side, such as " a kind of natural-circulation heat exchanger for supercritical water reactor Residual heat removal "（The patent No.：
ZL201210301144.1）.Regarding to the issue above, the invention provides a kind of new heat exchanger, so as to solve the problems, such as above-mentioned.
The content of the invention
To achieve these goals, technical scheme is as follows：
A kind of heat exchanger, the heat exchanger includes tube side side and shell side side, and the tube side side includes inlet tube, inlet plenum, biography
Heat pipe bundle, outlet chamber and outlet, the hot fluid enter inlet plenum from inlet tube, pass sequentially through heating surface bank, outlet
Chamber and outlet；The shell side side include intake channel, inner casing, shell and outlet chamber, the cold fluid pass sequentially through into
Space and outlet chamber that mouth passage, inner casing and shell are limited, it is characterised in that inlet plenum, heating surface bank, outlet chamber set
Put in the space limited in inner casing and shell, the inner casing and shell are that arcuation is arranged, the curved arrangement of described heating surface bank,
The arc and inner casing of the heating surface bank, the arc of shell have the identical center of circle.
Preferably, described inner casing and shell are respectively the inner casing and shell in heap cabin, described hot fluid is anti-high temperature
The cooling agent of heap is answered, described cold fluid is cooling water.
Preferably, the exit passageway is higher than the position that intake channel is set, described inlet plenum compares outlet chamber
The position of setting is high.
Preferably, setting orifice plate in exit passageway.
Preferably, the part that described inlet tube and outlet are connected with inlet plenum and outlet chamber is also disposed at
In arcuation space.
Preferably, the part that the inlet tube and outlet are connected with inlet plenum and outlet chamber is flexible structure
Or elastic construction.
Preferably, the metallic rod that the heating surface bank outer wall stretches out, the metal rod ends are pointed structures, from
The direction of the end of metallic rod is relative with the flow direction of cold fluid described in heating surface bank outer wall case.
Preferably, the metallic rod is multiple, the distribution density M of metallic rod is used as the function F apart from intake channel
（S）, i.e. M=F (S), on same heat-exchanging tube bundle, F ' (S)>0, wherein F ' (S) is F（S）First order derivative.
Preferably, F " (S)>(S) is F for 0, wherein F "（S）Second derivative.
Preferably, described inner casing and shell are respectively the inner casing and shell in heap cabin, described hot fluid is anti-high temperature
The cooling agent of heap is answered, described cold fluid is cooling water.
Preferably, the exit passageway is higher than the position that intake channel is set, described inlet plenum compares outlet chamber
The position of setting is high.
Preferably, function Fs of the distribution density M of metallic rod as height（H）, i.e. M=F (H), F ' (H)>0, wherein F '
(H) it is F（H）First order derivative.
Preferably, F " (H)>(H) is F for 0, wherein F "（H）Second derivative.
Preferably, setting orifice plate in exit passageway.
Preferably, described inlet tube and outlet are flexible pipe.
Compared with prior art, it is of the invention to have the following advantages：
1）The heat-exchanging tube bundle of heat exchanger is arcuate structure, and has identical arcuate structure with inner casing and shell, can including
Freely expanded with heat and contract with cold in the space of shell and shell.
2）It is pointed bar that heat exchanger tube outside sets end, on the one hand be able to can be broken in the flowing of biphase gas and liquid flow
Bad laminar sublayer, increasing heat transfer area carries out augmentation of heat transfer, and because being bar, flow resistance is small, will not also increase shell side
Flow resistance, and by setting point, can prick a bubble, realize expanding gas-liquid interface and gas phase boundary and strengthening
Disturbance.
3）Changed along the rule on fluid flow direction and short transverse by setting metallic rod, it is further to improve
Heat transfer effect.
4）Residual heat removal cooler is arranged in containment or heap out of my cabin, is not take up containment or heap cabin arrangement space；
5）Residual heat removal cooler is immersed in cooling water large space, and residual heat of nuclear core is expelled to final low-temperature receiver and only needs to once heat friendship
Change, substantially reduce the path of Residual heat removal, improve the speed of response；
6）Residual heat removal cooler is not provided with special shell side housing, but make use of the inner casing and shell in containment or heap cabin
Between interlayer, flow resistance is very low, substantially increases natural-circulation capacity.
7）The height and position of heat exchanger can up and down be adjusted in interlayer, not by the interference limit of other equipment pipeline in heap cabin
System, you can regulation tube side and shell side Cool Hot Core difference in height, so as to realize the natural-circulation capacity and heat-carrying capacity of tube side and shell side
Matching.
Brief description of the drawings
Fig. 1 is low flow resistance close-coupled Residual heat removal cooler schematic diagram；
Fig. 2 is the tangent plane schematic diagram of the heat-exchanging tube bundle for setting metallic rod；
Fig. 3 is the tangent plane schematic diagram of another heat-exchanging tube bundle for setting metallic rod；
Fig. 4 is the tangent plane schematic diagram of the heat exchanger tube for setting inner fin；
Fig. 5 is the floor map that heat-exchanging tube bundle launches.
In figure：1- inlet tubes；2- inlet plenums；3- heating surface banks；4- outlet chamber；5- outlets；6- intake channels；
7- inner casings；8- shells；9- exit passageways；10- heaps cabin；11- low-temperature receivers.
3-1 metallic rods, 3-1-1 pointed structures, 3-1-2 sloping portions, horizontal component 3-1-3,3-2 inner fin, 3-3 is small logical
Road.
Specific embodiment
Specific embodiment of the 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.
As shown in figure 1, a kind of heat exchanger, the heat exchanger includes tube side side and shell side side, and the tube side side includes import
Pipe 1, inlet plenum 2, heating surface bank 3, outlet chamber 4 and outlet 5, the hot fluid enter inlet plenum 2 from inlet tube 1,
Pass sequentially through heating surface bank 3, outlet chamber 4 and outlet 5；The shell side side includes intake channel 6, inner casing 7, shell 8 and goes out
Mouth passage 9, the cold fluid passes sequentially through space and the exit passageway 9 that intake channel 6, inner casing 7 and shell 8 are limited, snout cavity
Room 2, heating surface bank 3, outlet chamber 4 are arranged in the space that inner casing and shell are limited, and the inner casing 7 and shell 8 are arcuation cloth
Put, the described curved arrangement of heating surface bank 3, the arc and inner casing 7 of the heating surface bank 3, the arc of shell 8 have identical
The center of circle.
Set by the arcuation of above-mentioned phase concentric structure, and by inlet plenum 2 and outlet chamber 4 be arranged on inner casing and
In the arcuation space that shell is formed, the heating surface bank 3 can in the arcuation space that inner casing and shell are formed freely heat expansion
Shrinkage, therefore the applicable temperature range of heat-exchanging tube bundle and liquid scope are more extensive, and the range of application of heat exchanger has been expanded significantly.
Preferably, the part being connected with inlet plenum 2 and outlet chamber 4 of described inlet tube 1 and outlet 2
It is arranged in arcuation space, and preferably, the inlet tube 1 and outlet 2 are connected with inlet plenum 2 and outlet chamber 4
The part for connecing is flexible structure or elastic construction.
By setting flexible structure or elastic construction, can further facilitate heat-exchanging tube bundle 3 in arc space from
Stretched by ground.
Preferably, as shown in Fig. 2 the outer wall of the heating surface bank 3 metallic rod 3-1, the metallic rod 3-1 that stretch out
End is pointed structures 3-1-1, from the flowing of the direction of the end of metallic rod 3-1 described in the outer wall case of heating surface bank 3 and cold fluid
Direction is relative.I.e. pointed structures head on against the next cold fluid of stream.The signified flow direction of arrow as shown in Figure 2.
Preferably, as shown in Fig. 2 the included angle A of the metallic rod 3-1 and the outside wall surface of heating surface bank 3 is 30-60 degree, entering
One step is preferably 40-45 degree.
Preferably, as shown in Fig. 2 the distance between adjacent tube center of heat-exchanging tube bundle is that heat-exchanging tube bundle outer tube is straight
1.7-2.5 times of footpath, the pointed structures 3-1-1 of the end of metallic rod 3-1 is apart from the preferred apart from h of the outer tube wall of heat-exchanging tube bundle 3
It is 0.4-0.6 times of outer tube diameter.
By above-mentioned preferred angle and distance so that in the case of resistance is less, good heat transfer effect is realized.
It is pointed bar that the outside of heat exchanger tube 3 sets end, on the one hand be able to can be destroyed in the flowing of biphase gas and liquid flow
Laminar sublayer, and increase heat transfer area and carry out augmentation of heat transfer, and because being bar, flow resistance is small, will not also increase shell side
Flow resistance, and by setting point, the bubble in biphase gas and liquid flow can be punctured, realize expanding gas-liquid interface and
Gas phase boundary simultaneously strengthens disturbance.Therefore by setting pointed bar, the coefficient of heat transfer of shell side side is greatly improved.
Preferably, the metallic rod 3-1 is multiple, the distribution density M of metallic rod 3-1 is used as apart from intake channel 6
Function F（S）, i.e. M=F (S), on same heat-exchanging tube bundle, F ' (S)>0, wherein F ' (S) is F（S）First order derivative.That is edge
The flow direction of cold fluid, the distribution density of described metallic rod 3-1 is increasing.Because along the flow direction of fluid,
The cooling fluid temperature more and more higher of shell side, the gas caused by biphase gas and liquid flow is also more and more, therefore by there is rule
The multiple pointed metallic rod 3-1 of the setting of rule, can further improve the coefficient of heat transfer, save material.It is found through experiments that, it is regular
Ground sets the distribution density of metallic rod 3-1, by increasing capacitance it is possible to increase 20% or so heat exchange efficiency, and can also reduce by 5% or so stream
Dynamic resistance.
Preferably, F " (S)>(S) is F for 0, wherein F "（S）Second derivative.I.e. along the flow direction of cold fluid,
The amplitude that the distribution density of described metallic rod 3-1 is increasing constantly increases.Find in an experiment, the growth of gas is not
With the growth apart from line style, and in the growth of increase formula, therefore changed by setting above-mentioned rule, further improve and change
The thermal efficiency.
Preferably, metallic rod 3-1 is also arc structure.By being arranged such, it is ensured that and the flow direction phase of cold fluid
Correspondence, improves flow-disturbing effect.
Preferably, metallic rod 3-1 include connection heat-exchanging tube bundle sloping portion 3-1-2 and with sloping portion 3-1-2 phases
Connect and the parallel portion 3-1-3 parallel with heat-exchanging tube bundle.Described tip 3-1-1 is arranged on the end of parallel portion 3-1-3.
Preferably, described parallel portion 3-1-3 metallic rods are arc structure, the circular arc where parallel portion 3-1-3
It is same with the center of circle where the circular arc of heat-exchanging tube bundle 3.
By setting parallel portion 3-1-3, the flow direction of tip 3-1-1 straight cutting cooling fluids can be made, improve heat exchange
Effect.
Preferably, as shown in figure 3, the included angle A of the sloping portion 3-1-2 and heat-exchanging tube bundle tube wall is 45-70 degree,
Preferably 55-60 degree.
By above-mentioned preferred angle so that in the case of resistance is less, good heat transfer effect is realized.
Preferably, the discharge of residual heat of nuclear core of the described heat exchanger applications in the heap cabin 10 in nuclear reactor.It is described
Inner casing and shell be respectively heap cabin 10 inner casing and shell, described hot fluid is the cooling agent of reactor, the cooling agent
Described cold fluid is cooling water.
Reactor coolant from reactor core, flow successively through the inlet tube 1 of Residual heat removal cooler tube side, the Room of snout cavity 2,
Heating surface bank 3, outlet chamber 4 and outlet 5, after the cooling water cooling in Residual heat removal cooler shell side interlayer, return to heap
Core.Cooling water flows successively through intake channel 6, inner casing 7 and the shell 8 of Residual heat removal cooler shell side from the bottom of low-temperature receiver 11
Interlayer, exit passageway 9 are put into, after being heated by the reactor coolant of Residual heat removal cooler tube side, low-temperature receiver 11 is flowed upwardly into.
By being arranged in interlayer so that the height and position of heat exchanger can up and down be adjusted in interlayer, not by heap cabin 10
The interference limitation of other equipment pipeline, you can regulation tube side and shell side Cool Hot Core difference in height, so as to realize tube side and shell side from
The matching of right circulation ability and heat-carrying capacity.And by being arranged in interlayer, the space in heap cabin 10, waste heat can be made full use of
Discharge cooler shell side make use of mezzanine space between inner casing and shell, without the extra equipment of increase, pipeline, valve and attached
The structures such as part, the path of whole shell-side flow path is shorter, and section is wider, simple structure, the characteristics of with low flow resistance.
Preferably, the exit passageway 9 is higher than the position that intake channel 6 is set, described inlet plenum 2 compares outlet plenum
The position that room 4 is set is high.By above-mentioned setting, the tube side of heat exchanger and the natural circulation set up of shell side, constantly
Residual heat of nuclear core in heap cabin is expelled to low-temperature receiver.
Preferably, function Fs of the distribution density M of metallic rod 3-1 as height（H）, i.e. M=F (H), F ' (H)>0, its
Middle F ' (H) is F（H）First order derivative.I.e. with the increase of height, described metallic rod 3-1 distribution densities are increasing.Because
With the increase of height, the gas in gas-liquid two-phase is more and more, therefore by increasing metallic rod 3-1 density, can be further
Metallic rod is distributed according to rule, the coefficient of heat transfer is improved.It is found through experiments that, it is possible to increase 15%-18% or so heat transfer coefficients,
But also can further reduce by 3% flow resistance.
Preferably, F " (H)>(H) is F for 0, wherein F "（H）Second derivative.I.e. with the increase of height, described gold
The increasing amplitude of category bar 3-1 distribution densities constantly increases.It is found through experiments that, with the increase of height, the increasing of bubble
Plus be not that line style increases, but increasing degree more and more higher, therefore by setting, further improve also hot coefficient.
Preferably, setting orifice plate in exit passageway 9.By setting orifice plate, cool down boiling water when can play stream and
Suppress the effect flow backwards, keep two phase natural circulation flowing stabilization
Preferably, the heat-exchanging tube bundle is many circular heat exchanger tubes 3 for cross section.
As shown in figure 4, the inside of the heat exchanger tube 3 sets inner fin 3-2, the inner fin 3-2 is divided into multiple by heat exchanger tube
Passage aisle 3-3, sets intercommunicating pore 3-2-1, so that adjacent passage aisle 3-3 communicates with each other on inner fin.
By setting inner fin 3-2, heat exchanger tube is divided into multiple passage aisle 3-3, further augmentation of heat transfer, but accordingly
The pressure of flow of fluid increases.By setting intercommunicating pore 3-2-1, it is ensured that the connection between adjacent passage aisle 3-3, so that
Fluid in the big passage aisle of pressure can flow in the small passage aisle of neighbouring pressure, and solving the inside of condensation end, each is small
The problem that the pressure of runner 26 is uneven and local pressure is excessive, so as to promote abundant flowing of the fluid in heat exchanger channels,
Simultaneously by the setting of intercommunicating pore, the pressure inside heat exchanger tube is also reduced, improve heat exchange efficiency.
Preferably, along the flow direction of cooling agent, the area of the intercommunicating pore is constantly reduced.
Described intercommunicating pore 3-2-1 is square structure, and along the flow direction of cooling agent, the foursquare length of side is not
Disconnected reduction.
Preferably, the diameter parallel of the foursquare diagonal and heat-exchanging tube bundle.
Along the flow direction of fluid, the fluid in heat exchanger tube is constantly condensed, the gas in biphase gas and liquid flow also by
Gradually be condensed into liquid so that the pressure in heat exchanger tube is constantly reduced, and because intercommunicating pore 3-2-1 presence so that heat
Pressure distribution inside pipe is more and more uniform, therefore the area of intercommunicating pore need not be very big, is constantly reduced by setting, so that
So that in the case where the uniform pressure of inside heat pipe pressure is ensured, heat exchange area is increased by connecting the reduction of hole area,
So as to improve heat exchange efficiency.
Preferably, along the flow direction of fluid, the amplitude that the area of the intercommunicating pore 3-2-1 is constantly reduced constantly increases
Plus.It is also the Changing Pattern for meeting flowing pressure by being arranged such, while further reducing flow resistance, improves heat exchange
Efficiency.By being arranged such, by being that experiment finds that 10% or so heat exchange efficiency can be improved, while resistance keeps not substantially
Become.
Preferably, along the flow direction of fluid, the distributed quantity of intercommunicating pore is fewer and feweri, further preferably, the company
The amplitude that number of openings 16 is constantly reduced is continuously increased.
Principle is reduced by the Distribution Principle of above-mentioned quantity and area identical, area is reduced by distributed number less.
Preferably, intercommunicating pore 3-2-1 is shaped as circle.
Preferably, the inner fin 3-2 is multiple, and inner fin 3-2 stretches out from the central axis of pipe, with pipe
Inwall is connected, and the angle between the inner fin 3-2 is identical.It is identical by the angle between inner fin, heat exchanger tube can be caused
Internal flow distribution keeps uniform, and pressure distribution is also kept in balance accordingly.
Preferably, the inner fin 3-2 is 4, as shown in Figure 4.Angle between the inner fin is 90 °.
In actual experiment find, the area of intercommunicating pore 3-2-1 can not be too small, it is too small if can cause the increasing of flow resistance
Plus, and the minimum area of intercommunicating pore 3-2-1 is relevant with pipe caliber, and general is bigger caliber, then connect hole area just
What can be designed is smaller, and caliber is smaller, and it is bigger that the area of intercommunicating pore 3-2-1 can be designed, therefore intercommunicating pore 3-2-1 and pipe
The distance between caliber and its adjacent intercommunicating pore 3-2-1 must are fulfilled for certain requirement, otherwise may result in flow resistance excessive.
The inner fin is in the case of 4, the interior diameter of the pipe is D, the length of side B of the square intercommunicating pore, institute
The distance between intercommunicating pore adjacent on same fin is stated for S, following relation is met：
S/D*10>=a-b*LN(B/D*10)；
Wherein a, b are parameter, 13<a<14,11<b<12;LN is logarithmic function；
0.2<S/D<0.7；Preferably 0.35-0.63;
0.2<B/D<0.3
2.5<D<10m；
0.7<B<2.1m。
Wherein, S is equal to the distance between adjacent intercommunicating pore 3-2-1 centers.Left and right as shown in Figure 4,5 is adjacent and phase up and down
The distance between adjacent intercommunicating pore center.
Further preferably, 10<S<45mm.
Preferably, with the increase of B/D, described a, c increases, and b reduces.
Preferably, S/D*10=-b*LN (B/D*10).
Now heat transfer effect reaches most preferably, and flow resistance meets requirement just.
If heat-exchanging tube bundle is arcuation, such as, as shown in figure 1, the arc length of the circular arc where described pipe is H, connect institute
The chord length of two-end-point of circular arc be S, then need to consider that the brought resistance of bending changes, then above-mentioned formula is changed into：
（S/D*10）*(S/H)c>=a-b*LN(B/D*10)；
Wherein c is parameter, 0.3<c<0.5;Further preferably, 0.38<c<0.41；Radian wherein where circular arc is 45-75 degree,
More preferably 50-60 degree.Above-mentioned degree is all angle.
Other parameter selections keep constant.
Preferably,（S/D*10）*(S/H)c>=a-b*LN (B/D*10), now heat transfer effect reach most preferably, flowing resistance
Power meets requirement just.
Preferably, as shown in Figure 4,5, multiple rows of intercommunicating pore 3-2-1, the multiple intercommunicating pore 3- are set on each inner fin
2-1 could be arranged to wrong row's structure.By mistake, row connects structure, can further improve heat exchange, reduces pressure.
As the application in being cooled down in nuclear reaction, as shown in figure 1, low flow resistance close-coupled Residual heat removal cooler shell side is interior
Shell 7 is that external diameter φ 18m are columnar structured, and shell 8 is also that internal diameter φ 20m are columnar structured, between the two in the presence of an about 1m wide
Annular gap, interlayer bottom sets internal diameter φ 0.8m circular inlet port passages 6, and interlayer top is provided with internal diameter φ 0.8m circles and goes out
Mouth passage 9, interlayer is connected by intake channel 6 and exit passageway 9 with the space of low-temperature receiver 11, and cooling water is full of in interlayer.Low stream
Hinder the cooling that heating surface bank 3, inlet plenum 2 and the outlet chamber 4 of close-coupled Residual heat removal cooler tube side are immersed in interlayer
In water, heating surface bank 3 is formed by the heat-transfer pipe that 100 φ 20mm, average length are about 11m in circular arc arrangement, the He of inlet tube 1
The pipe of the internal diameter φ 0.25m of outlet 5, is connected through inner casing 7 and with reactor core.
As shown in figure 1, in tube side, pyroreaction reactor coolant flows into inlet plenum 2 through inlet tube 1, then branches to 100
In heat-transfer pipe, water cooling is cooled down by shell side, the low-temp reaction reactor coolant after cooling imports outlet chamber 4, then is returned through outlet 5
Return reactor core, heat-transfer pipe is heated elongation strain in the process, but thermal stress because the circular arc arrangement of heating surface bank 3 be able to from
It is dynamic to eliminate.In shell side, cooling water is flowed up by reactor coolant heat temperature raising, and the top of low-temperature receiver 11 is entered through exit passageway 9,
And the low-temperature cooling water of the bottom of low-temperature receiver 11 also constantly sucks interlayer from intake channel 6, because Residual heat removal cooler shell side is logical
Road simple structure has the less feature of resistance, therefore forms the lasting natural circulation of larger flow.
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 heat exchanger, the heat exchanger includes tube side side and shell side side, the tube side side include inlet tube, inlet plenum,
Heating surface bank, outlet chamber and outlet, the hot fluid enter inlet plenum from inlet tube, pass sequentially through heating surface bank, go out
Oral chamber and outlet；The shell side side includes intake channel, inner casing, shell and outlet chamber, and the cold fluid is passed sequentially through
Space and outlet chamber that intake channel, inner casing and shell are limited, it is characterised in that inlet plenum, heating surface bank, outlet chamber
It is arranged in the space that inner casing and shell are limited, the inner casing and shell are arcuation arrangement, the curved cloth of described heating surface bank
Put, the arc and inner casing of the heating surface bank, the arc of shell have the identical center of circle.
2. heat exchanger as claimed in claim 1, it is characterised in that described inner casing and shell are respectively the inner casings in heap cabin and outer
Shell, described hot fluid is the cooling agent of high-temperature reactor, and described cold fluid is cooling water.
3. heat exchanger as claimed in claim 2, it is characterised in that the exit passageway is higher than the position that intake channel is set,
Described inlet plenum is higher than the position that outlet chamber is set.
4. heat exchanger as claimed in claim 1, it is characterised in that orifice plate is set in exit passageway.
5. heat exchanger as claimed in claim 1, it is characterised in that described inlet tube and outlet and inlet plenum and outlet
The part that chamber is connected is also disposed in arcuation space.
6. heat exchanger as claimed in claim 5, it is characterised in that the inlet tube and outlet and inlet plenum and outlet plenum
The part that room is connected is flexible structure or elastic construction.
7. heat exchanger as claimed in claim 1, it is characterised in that the metallic rod that the heating surface bank outer wall stretches out, institute
Metal rod ends are stated for pointed structures, from the direction of the end of metallic rod described in heating surface bank outer wall case and the flowing side of cold fluid
To relative.
8. heat exchanger as claimed in claim 7, it is characterised in that the metallic rod is multiple, the distribution density M of metallic rod
As the function F apart from intake channel（S）, i.e. M=F (S), on same heat-exchanging tube bundle, F ' (S)>0, wherein F ' (S) is F
（S）First order derivative.
9. heat exchanger as claimed in claim 8, it is characterised in that F " (S)>(S) is F for 0, wherein F "（S）Second derivative.
10. heat exchanger as claimed in claim 7, it is characterised in that the distribution density M of metallic rod as height function F
（H）, i.e. M=F (H), F ' (H)>0, wherein F ' (H) is F（H）First order derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051659.5A CN106782697B (en) | 2016-11-25 | 2016-11-25 | A kind of compact heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051659.5A CN106782697B (en) | 2016-11-25 | 2016-11-25 | A kind of compact heat exchanger |
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| CN112339961A (en) * | 2020-10-28 | 2021-02-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112357037A (en) * | 2020-10-28 | 2021-02-12 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Self-flowing heat exchange system and ship |
| CN112357043A (en) * | 2020-10-28 | 2021-02-12 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Ship diesel power system |
| CN112357038A (en) * | 2020-10-28 | 2021-02-12 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam powered outboard conformal cooling system |
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| CN112530611A (en) * | 2020-12-24 | 2021-03-19 | 上海核工程研究设计院有限公司 | Advanced and simplified small-pile passive special safety system |
| CN113035387A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | PCS (Power distribution System) long-term cooling water tank capable of operating efficiently |
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| CN112357041A (en) * | 2020-10-28 | 2021-02-12 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Ship diesel power system |
| CN112357037A (en) * | 2020-10-28 | 2021-02-12 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Self-flowing heat exchange system and ship |
| JP7431962B2 (en) | 2020-10-28 | 2024-02-15 | 武漢第二船舶設計研究所 | Steam-powered outboard conformal cooling system |
| CN112339961B (en) * | 2020-10-28 | 2022-06-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112339961A (en) * | 2020-10-28 | 2021-02-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112530611A (en) * | 2020-12-24 | 2021-03-19 | 上海核工程研究设计院有限公司 | Advanced and simplified small-pile passive special safety system |
| CN113035387B (en) * | 2021-03-05 | 2022-11-18 | 哈尔滨工程大学 | PCS (Power distribution System) long-term cooling water tank capable of operating efficiently |
| CN113035387A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | PCS (Power distribution System) long-term cooling water tank capable of operating efficiently |
| CN117308662A (en) * | 2023-11-27 | 2023-12-29 | 中国核动力研究设计院 | Heat exchanger and modular heat exchange system |
| CN117308662B (en) * | 2023-11-27 | 2024-01-26 | 中国核动力研究设计院 | Heat exchanger and modular heat exchange system |
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