CN109883222A - Heat exchanger - Google Patents
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- CN109883222A CN109883222A CN201910195838.3A CN201910195838A CN109883222A CN 109883222 A CN109883222 A CN 109883222A CN 201910195838 A CN201910195838 A CN 201910195838A CN 109883222 A CN109883222 A CN 109883222A
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Abstract
The invention discloses a kind of heat exchangers, comprising: central tube, the central tube extend to the lower end of heat exchanger from the upper end of heat exchanger；Central lumen, the central lumen are used to accommodate the upper part of the central tube, and the central lumen side is equipped with outlet；The cylinder connecting with the central lumen, the cylinder are used to accommodate the lower part of the central tube；And heat-exchanging tube bundle, the heat-exchanging tube bundle are set in the cylinder, and are arranged around the central tube；Wherein, tube side fluid flow to the lower end of heat exchanger from the upper end edge central tube of heat exchanger, and flow to central lumen from the lower end edge heat-exchanging tube bundle of heat exchanger, then flow out from outlet；The top of the cylinder is equipped with inlet window, and the lower part of the cylinder is equipped with exit window, and shell-side fluid is flowed into from the inlet window and flowed out from the exit window.
Description
Technical field
The embodiment of the present invention is related to field of heat exchange, in particular to a kind of heat exchanger.
Background technique
In nuclear power industry and chemical industry, heat exchanger is the very high process equipment of utilization rate.It is changed in general, being equipped in heat exchanger
Heat pipe, tube side fluid is in heat exchanger tube internal circulation；Meanwhile heat exchanger is immersed in the shell-side fluid of submergence container, shell-side fluid
Circulate in into heat exchanger shell and outside heat exchanger tube, be achieved in tube side fluid with the larger temperature difference and shell-side fluid it
Between heat exchange.
Since heat exchanger needs to be immersed in shell-side fluid, then the mesh of needs and holding facility compact for arrangement
, shell-side fluid requires to introduce and draw in the same end of heat exchanger.Generally, for such case, tube side is divided into two-way
It can be solved, so that tube side fluid is done once back and forth.
However, being divided into the heat exchanger of two-way for tube side, often heat exchange amount is not averagely to undertake, and thus leads to heat exchanger
Interior temperature distribution is non-uniform, and thermal stress issues are given birth to therewith.Feelings special for some applying working conditions, more sensitive to thermal stress
Condition, this heat exchanger are just no longer applicable in.
Therefore, it is necessary to study a kind of tube side fluids to lead in/out in the same end, and not will lead to thermo parameters method not
Generate the heat exchanger of larger thermal stress.
Summary of the invention
The main purpose of the present invention is to provide a kind of heat exchangers with center tube structure, to solve the above technical problems
At least one of aspect.
According to an aspect of the present invention, it proposes a kind of heat exchangers, comprising: central tube, the central tube is from heat exchanger
Upper end extend to the lower end of heat exchanger；Central lumen, the central lumen is used to accommodate the upper part of the central tube, described
Central lumen side is equipped with outlet；The cylinder connecting with the central lumen, the cylinder is for accommodating the central tube
Lower part；And heat-exchanging tube bundle, the heat-exchanging tube bundle are set in the cylinder, and are arranged around the central tube；Wherein, tube side
Fluid flow to the lower end of heat exchanger from the upper end edge central tube of heat exchanger, and flow to center from the lower end edge heat-exchanging tube bundle of heat exchanger
Chamber, then flowed out from outlet；The top of the cylinder is equipped with inlet window, and the lower part of the cylinder is equipped with exit window, shell side stream
Body is flowed into from the inlet window and is flowed out from the exit window.
According to some embodiments, the central lumen includes the first chamber radially extended along heat exchanger and along heat exchanger
Axially extending second chamber, the outlet are set to the second chamber side.
According to some embodiments, the heat exchanger further includes shell, and the shell is arranged around the central lumen.
According to some embodiments, the shell is equipped with support, and the support, which is used to install heat exchanger to submergence, to be held
Device.
According to some embodiments, the heat exchanger further includes heat insulation structural, the heat insulation structural be set to the shell with
Between the second chamber, and it is arranged close to the support.
According to some embodiments, the upper end of the cylinder is equipped with upper perforated plate, and the lower end of the cylinder is equipped with lower perforated plate, institute
The both ends for stating heat-exchanging tube bundle are mounted respectively to the upper perforated plate and the lower perforated plate.
According to some embodiments, the lower end of the heat exchanger is equipped with lower head, and the central tube protrudes into the lower head
It is interior.
According to some embodiments, the lower head is connected to the lower perforated plate, and there are gaps for junction.
According to some embodiments, flow distribution structure is equipped in the lower head.
According to some embodiments, there are gaps between the central tube and the flow distribution structure.
According to some embodiments, the heat-exchanging tube bundle is equipped with bending section, for compensating between heat-exchanging tube bundle and cylinder
Thermal expansion difference.
According to some embodiments, the bending section of the heat-exchanging tube bundle is along annular arrangement.
According to some embodiments, the heat exchanger further includes multiple support constructions of the axial alignment along heat exchanger, is used
In the support heat-exchanging tube bundle.
According to some embodiments, multiple pull rods, the multiple pull rod are equipped between the upper perforated plate and the lower perforated plate
It is connect with the multiple support construction.
According to some embodiments, the multiple pull rod has bending section.
According to some embodiments, drain pipe is equipped in the central tube, for tube side stream remaining in heat exchanger to be discharged
Body.
In the heat exchanger of embodiment according to the present invention, by setting central tube, heat-exchanging tube bundle and central lumen, so that
Tube side fluid flow to the lower end of heat exchanger from the upper end edge central tube of heat exchanger, then flow to from the lower end edge heat-exchanging tube bundle of heat exchanger
Central lumen, and flowed out from outlet, it is thus achieved that tube side fluid can facilitate heat exchange in the same end inflow and outflow of heat exchanger
Device submergence is set in shell-side fluid, and enables to the compact overall structure of heat exchanger dexterous, is convenient for pipe arrangement；Pass through
Inlet window and exit window is respectively set in cylinder upper and lower part, so that shell-side fluid circulates outside heat-exchanging tube bundle, it thus can be real
The heat exchange between tube side fluid and shell-side fluid inside and outside existing heat-exchanging tube bundle；Meanwhile by the way that central tube is set in heat exchanger
Portion middle position, and heat-exchanging tube bundle is set around central tube, it is ensured that heat more equably undertakes in heat exchanger, effectively
Improve the thermal stress issues that temperature distribution is non-uniform causes, the reliability and security of heat exchanger is improved, especially suitable for heat
The more sensitive situation of stress.
Detailed description of the invention
By the description made for the present invention of below with reference to attached drawing, other objects and advantages of the present invention will be aobvious and easy
See, and can help that complete understanding of the invention will be obtained.
Fig. 1 shows the structural schematic diagram of the heat exchanger of an exemplary embodiment according to the present invention；And
The schematic diagram of heat exchanging process is installed to submergence container and realized Fig. 2 shows the heat exchanger of Fig. 1.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.Illustrating
In book, the same or similar drawing reference numeral indicates the same or similar component.
In the following detailed description, for convenient for explain, elaborate many concrete details with provide to present disclosure implement
The comprehensive understanding of example.It should be apparent, however, that one or more embodiments without these specific details can also be by reality
It applies.In other cases, well known construction and device is diagrammatically embodied to simplify attached drawing.The direction mentioned in embodiment
Term, such as " upper end ", " lower end ", " top ", " lower part " etc. are only the directions with reference to attached drawing.Therefore, the direction term used
It is intended to be illustrative and not intended to limit protection scope of the present invention.
Fig. 1 shows the structural schematic diagram of the heat exchanger 100 of an exemplary embodiment according to the present invention.Such as Fig. 1 institute
Show, heat exchanger 100 includes: central tube 8, and central tube 8 extends to the lower end of heat exchanger 100 from the upper end of heat exchanger 100；Center cavity
Room 5, central lumen 5 are used to accommodate the upper part of central tube 8, and 5 side of central lumen is equipped with outlet 17；Connect with central lumen 5
The cylinder 11 connect, cylinder 11 are used to accommodate the lower part of central tube 8；And heat-exchanging tube bundle 9, heat-exchanging tube bundle 9 are set in cylinder 11,
And it is arranged around central tube 8；Wherein, tube side fluid flow to the lower end of heat exchanger 100 from the upper end edge central tube 8 of heat exchanger 100,
And it is flow to central lumen 5 from the lower end edge heat-exchanging tube bundle 9 of heat exchanger 100, then flow out from outlet 17；The top of cylinder 11 is equipped with
Inlet window 7, the lower part of cylinder 11 are equipped with exit window 12, and shell-side fluid is flowed into from inlet window 7 and flowed out from exit window 12.
In the heat exchanger 100 of embodiment according to the present invention, pass through setting central tube 8, heat-exchanging tube bundle 9 and central lumen
5, so that tube side fluid flow to the lower end of heat exchanger 100 from the upper end edge central tube 8 of heat exchanger 100, then under heat exchanger 100
End flow to central lumen 5 along heat-exchanging tube bundle 9, and flows out from outlet 17, it is thus achieved that tube side fluid is in the same of heat exchanger 100
One end inflow and outflow can facilitate the submergence of heat exchanger 100 to be set in shell-side fluid, and enable to the entirety of heat exchanger 100
Compact-sized dexterity is convenient for pipe arrangement；By the way that inlet window 7 and exit window 12 is respectively set in 11 upper and lower part of cylinder, make
It obtains shell-side fluid to circulate outside heat-exchanging tube bundle 9, thus can realize between the tube side fluid and shell-side fluid inside and outside heat-exchanging tube bundle 9
Heat exchange；Meanwhile by the way that central tube 8 is set to 100 bosom position of heat exchanger, and set heat-exchanging tube bundle 9 around central tube 8
It sets, it is ensured that heat more equably undertakes in heat exchanger 100, is effectively improved the thermal stress that temperature distribution is non-uniform causes and asks
Topic, improves the reliability and security of heat exchanger, especially suitable for the situation more sensitive to thermal stress.
Heat exchanger is used to the partial heat of hot fluid passing to cold fluid, is a kind of industry of heat transfer and convective heat transfer
Using.According to cold and hot fluid heat exchange principle and mode, heat exchanger can be divided into three categories: dividing wall type, it is hybrid and
Heat accumulating type.In three classes heat exchanger, dividing wall type heat exchanger application is most.The characteristics of dividing wall type heat exchanger is hot and cold two fluids quilt
One layer of solid wall surface (pipe or plate) separates, does not mix, and carries out heat exchange by partition.Wherein, shell-and-tube (also known as shell and tube)
Heat exchanger is most typical dividing wall type heat exchanger.The two kinds of fluids to exchange heat in shell-and-tube heat exchanger, one kind flow in pipe
Dynamic, stroke is known as tube side；One kind flows outside pipe, and stroke is known as shell side.The wall surface of tube bank is heat-transfer area.Fluid is in pipe
A tube side is once often inside known as by tube bank, a shell side is once often known as by shell.
Heat exchanger has important application in reactor engineering field.For example, Intermediate Heat Exchanger is connection pool type natrium cold fast reactor
The heat exchange equipment of main heat-transfer system primary Ioops and secondary circuit, for realizing the heat exchange between liquid sodium；In addition, sodium-cooled fast reactor
Steam generator be used for by the heat transfer of secondary sodium give three Loop Waters, be passed through preheating, evaporation and overheat, be steamer
The application of machine qualified steam and heat exchanger required for providing.
Since tube side fluid and shell-side fluid are there are the temperature difference, the temperature of heat-exchanging tube bundle and shell is also inconsistent, then changing
There are thermal expansion differences between heat pipe bundle and shell, and can thus lead to the generation of thermal stress.Component is when heated or cooling, if respectively
Portion temperature is inconsistent, and deformation will be restricted.The high part of temperature will expand elongation, and the low part of temperature then limits the swollen of it
It is swollen, compression as a result is generated in high temperature position, low temperature position generates tensile stress.Thermal stress can make heat exchanger be damaged, and influence
Performance shortens the service life.Particularly, for large-scale sodium-cooled fast reactor Intermediate Heat Exchanger, heat-exchanging tube bundle is up to thousands of, due to thermal expansion
Thermal stress issues caused by difference are very prominent.
In the prior art, it is usually that upper capping is separated into feed zone using partition and is gone out that tube side, which is divided into the heat exchanger of two-way,
Expect area, in feed zone setting charging adapter tube, discharging is set in discharge zone and is taken over, charging adapter tube is same positioned at cylinder with discharging adapter tube
End；Heat-exchanging tube bundle is also accordingly divided into charging tube bank and discharging tube bank two parts pass through so that tube side fluid enters from charging adapter tube
Charging tube bank reaches in lower capping, and turns back and ascend into discharging tube bank, is taken over away by discharging.Heat exchange for this structure
Device, due to tube side fluid constantly heating (or cooling) in heat-exchanging tube bundle, then there is temperature between charging tube bank and discharging tube bank
Difference, heat heat exchanger or so two parts cannot averagely undertake, be easy to produce thermal stress, this for outermost heat exchanger tube especially
Obviously.
In an embodiment of the present invention, heat-exchanging tube bundle 9 is arranged around central tube 8, and heat-exchanging tube bundle 9 can be relative to central tube 8
It is arranged symmetrically, heat more can equably undertake at the heat-exchanging tube bundle 9 being arranged symmetrically, and can improve that temperature distribution is non-uniform
The thermal stress issues of initiation.Heat-exchanging tube bundle 9 of the invention can be arranged by the way of concentric circles, around the circle circle of central tube 8 one
Arrangement.
Fig. 2 shows the installations of the heat exchanger 100 of Fig. 1 to submergence container 20 and realizes the schematic diagram of heat exchanging process.Such as Fig. 2
Shown, heat exchanger 100 is immersed in the shell-side fluid of submergence container 20, and shell-side fluid is along direction inflow heat exchanger shown in arrow B1
In 100, and flowed out along direction shown in arrow B2 from heat exchanger 100.Tube side fluid enters central tube 8 along direction shown in arrow A1,
And it is flowed out along direction shown in arrow A2 from outlet 17.Shell-side fluid and tube side fluid carry out heat at the tube wall of heat-exchanging tube bundle 9
Exchange.In an embodiment of the present invention, the flowing of tube side fluid can be using pump driving, and the flowing of shell-side fluid can be according to not
Pump driving, agitation or Natural Circulation driving are set as with technique.Heat exchanger 100 of the invention can be used for immersion environment
In, and vertical is used, entire heat exchanger is mostly submerged in shell-side fluid.Have for shell-side fluid, that is, immersion fluid
The heat exchange under closed state may be implemented in the environment of risk.Shell side medium requirements are liquid；Tube side fluid can be liquid
Body or gaseous state.The material of heat exchanger 100 needs to have excellent compatibility with tube side medium and shell side medium, between each other mutually not
It influences.For example, the material of heat exchanger 100 is required to have corrosion-resistant when tube side medium and shell side medium have corrosivity
Ability.
With continued reference to Fig. 1, central lumen 5 may include the first chamber 51 radially extended along heat exchanger 100 and along heat exchanger
100 axially extending second chambers 52, outlet 17 are set to 52 side of second chamber.Being generally shaped like for first chamber 51 is flat
Shape, second chamber 52 are generally shaped like long and narrow, and the tubular chambers of central tube caliber can be greater than for diameter.Heat-exchanging tube bundle 9
Interior tube side fluid enters first chamber 51 after heat exchange and converges, then rises along second chamber 52, is discharged from outlet 17.The
The radial dimension of one chamber 51 can be consistent with the radial dimension of cylinder 11, and the tube side fluid to guarantee whole heat-exchanging tube bundles 9 is equal
It can enter first chamber 51.First chamber 51 is the region for the tube side fluid mixing flowed out from heat-exchanging tube bundle 9, first chamber 51
Height should meet so that from heat-exchanging tube bundle 9 come out tube side fluid be sufficiently mixed.Outlet 17 can be horizontally set at
The extending direction of two chambers, 52 side, outlet 17 is vertical with the extending direction of second chamber 52.Central tube 8 and outlet 17 divide
It is not connect with external pipe, for leading in/out for tube side fluid, central tube 8 can be relatively moved with external pipe.
Heat exchanger 100 can also include shell 1, and shell 1 is arranged around central lumen 5, and can be connected to cylinder 11.Shell
1 can play the role of protecting central lumen 5.Referring to Fig.1-2, support 2 can be equipped on shell 1, support 2 is used for heat exchanger
100 installations extremely submergence container 20.Support 2 may include the mounting plate extended laterally out from 1 two sides of shell, for installing and admittedly
On the fixed upper cover plate to submergence container 20, mounting plate heat exchanger section below protrudes into shell from the opening of submergence 20 upper cover plate of container
Journey stream is internal, and part more than mounting plate carries out the introducing and extraction of tube side fluid for connecting with Outer Tube.Support 2 can be with
It is welded with upper cover plate, to realize sealing.
Heat exchanger 100 may also include heat insulation structural 3, and heat insulation structural 3 can be set between shell 1 and second chamber 52, and
It is arranged close to support 2.Since central lumen 5 is located at 11 top of cylinder, shell-side fluid flows in cylinder 11, and tube side fluid is flowing
It when through central lumen 5, cannot exchange heat again with shell-side fluid, therefore setting heat insulation structural 3 can be used for reducing heat exchanger 100 and soak
Do not have the heat dissipation at 20 top of container.For example, being liquid water for tube side fluid and needing the case where becoming steam by heat exchange, liquid
Water carries out heat exchange into heat-exchanging tube bundle 9 and becomes steam from 8 inflow heat exchanger of central tube, 100 lower end, then, when steam enters
When central lumen 5, due to no longer obtaining the heat of shell-side fluid, it is more likely that be condensed into liquid water again because of heat dissipation, phase
When in affecting heat transfer effect.Therefore, setting heat insulation structural 3 can further maintain the heat transfer effect of heat exchanger 100.Second chamber
52 narrow structure makes between second chamber 52 and shell 1 there are certain spaces so that heat insulation structural 3 is arranged, and heat insulation structural 3 can
To be sheathed in second chamber 52, and contacted with 1 inner wall of shell.
The upper end of cylinder 11 is equipped with upper perforated plate 6, and the lower end of cylinder 11 is equipped with lower perforated plate 13, and the both ends of heat-exchanging tube bundle 9 are distinguished
It installs to upper perforated plate 6 and lower perforated plate 13.Heat-exchanging tube bundle 9 can be connected with upper perforated plate 6 and lower perforated plate 13 by way of welding, expanded joint
It connects.The tubesheet holes cooperated with heat-exchanging tube bundle 9 is correspondingly arranged on upper perforated plate 6 and lower perforated plate 13.In an embodiment of the present invention, it manages
Plate hole can be arranged in concentric circles.While upper perforated plate 6 and lower perforated plate 13 are designed as fixing heat-exchanging tube bundle 9, no
It influences tube side fluid and passes in and out heat-exchanging tube bundle 9, and shell-side fluid can also be stopped to enter the heat exchanger about 100 two other than cylinder 11
The part at end.
The lower end of heat exchanger 100 is equipped with lower head 15, and central tube 8 protrudes into lower head 15.Tube side fluid can edge as a result,
Central tube 8 flows to always lower head 15, then flows into heat-exchanging tube bundle 9 from lower head 15, and it is round-trip that lower head 15 is equivalent to tube side fluid
The turning point of flowing.Lower head 15 can connect to lower perforated plate 13 without connecting with cylinder 11, and in lower head 15 and down tube
The junction of plate 13 can there are gaps, it is possible thereby to allow heat-exchanging tube bundle 9 cold conditions and it is hot when freely stretch expansion and
It is unobstructed, the effect by power is avoided, heat exchanger component is destroyed.
Flow distribution structure 14 can be equipped in lower head 15, for adjusting the fluid flow for entering heat-exchanging tube bundle 9, so that
The flowing of tube side fluid is uniformly, steadily.Flow distribution structure 14 can be welded on lower head 15.Probe into the center of lower head 15
Between pipe 8 and flow distribution structure 14 can there are gap, allow central tube 8 cold conditions and it is hot when freely stretch expansion and
It is unobstructed.
Heat-exchanging tube bundle 9 can be equipped with bending section, for compensating the thermal expansion difference between heat-exchanging tube bundle 9 and cylinder 11, improve
The thermal stress issues of heat exchanger 100.Bending section can be used for preventing 9 expanded by heating of heat-exchanging tube bundle, not stretched by when cold events
Leeway.Bending section can be spatially spiral bend pipe.The axial bending radian of the bending section of all heat-exchanging tube bundles 9 is identical, and
Bending section does not allow heat-exchanging tube bundle 9 to lead to except the column range along annular arrangement.Certainly, smaller for thermal stress or requirement
Not high situation can not also set the heat-exchanging tube bundle 9 of bending section and use straight tube-like.
Heat exchanger 100 may also include multiple support constructions 10 of the axial alignment along heat exchanger 100, be used to support heat exchanger tube
Beam 9.Single support construction can radially extending along heat exchanger tube 100, support multiple heat exchanger tubes simultaneously in sustained height.Multiple
Support structure 10 divides heat-exchanging tube bundle 9 for multilayer along the axial alignment of heat exchanger 100.The axial dimension of heat-exchanging tube bundle 9 is larger, more
A support construction 10 is supported at the different height of heat-exchanging tube bundle 9, can reduce the vibration of heat-exchanging tube bundle 9.Support construction
10 can be made of plate band and corrugated ribbon, and support construction 10 can be the form of support plate.Support plate for example can be arch
Plate is also possible to full-circle spray pattern support plate.Support plate is equipped with the supported hole for passing through for heat-exchanging tube bundle 9, and supported hole can wrap
Include round hole, rectangular opening and plum blossom hole etc..Multiple support constructions 10 will avoid influencing shell side stream while supporting heat-exchanging tube bundle 9
The circulation of body.Multiple support constructions 10 with the straight pipe of heat-exchanging tube bundle 9 for connecting.
Multiple pull rods 16, multiple pull rods 16 and multiple support constructions can be equipped between upper perforated plate 6 and the lower perforated plate 13
10 connections.Multiple support constructions 10 are equipped with the mounting hole for cooperating with multiple pull rods 16, and multiple support constructions 10 can weld
It connects on multiple pull rods 16.
Multiple pull rods 16 can have bending section, for compensating the thermal expansion difference between multiple pull rods 16 and cylinder 11, change
The thermal stress issues of kind heat exchanger 100.The axial bending radian of the bending section of multiple pull rods 16 is identical, and bending section is along cyclic annular
Arrangement, does not allow multiple pull rods 16 to lead to except the column range, and needs to guarantee heat-exchanging tube bundle 9 and multiple in this case
Necessary gap between pull rod 16.
Drain pipe 4 can be equipped in central tube 8, for tube side fluid remaining in heat exchanger 100 to be discharged.Referring to Fig.1, in
8 one end of heart pipe is protruded into lower head 15, and the other end is stretched out from 8 top of central tube, when heat exchanger 100 needs to overhaul, Ke Yitong
It crosses heat exchanger 100 tube side fluid remained in central tube 8, heat-exchanging tube bundle 9 and lower head 15 is discharged.
Material, power, design pressure, design temperature of heat exchanger 100 of the invention etc. can determine according to the technological requirements；
According to the flow velocity of tube side fluid, the diameter of central tube 8 and the specification of heat-exchanging tube bundle 9 can be determined, according to concentric circles stringing rule
Carry out tube bank arrangement；The design of spatially spiral bend pipe structure can be carried out according to the size of thermal stress.
As described above, heat exchanger 100 of the invention at least with following several respects the utility model has the advantages that
(1) it can realize that heat is exchanged in the case where submerging environment, have dangerous ring for shell-side fluid, that is, immersion fluid
The exchange of the heat under closed state may be implemented in border；
(2) tube side fluid can be led in/out by the entrance sleeve and discharge connection on heat exchanger top, both to exchange heat
Device equipment itself is compact, and is conducive to process pipe arrangement；
(3) heat exchanger uses center tube structure, so that tube side fluid is evenly distributed, so that the heat for reducing heat exchanger is answered
Power is conducive to the reliability and security for improving heat exchanger；
(4) bending section of heat-exchanging tube bundle and pull rod design can compensate the thermal expansion between heat-exchanging tube bundle, pull rod and cylinder
Difference further decreases thermal stress；
(5) the gap connection of the connection of the gap of lower head and lower perforated plate and central tube and flow distribution structure is adapted to
Tube body cold conditions and it is hot when freely stretch expansion, avoid the effect by power.
Although in conjunction with attached drawing, the present invention is described, and embodiment disclosed in attached drawing is intended to reality of the invention
The mode of applying illustrates, and should not be understood as to a kind of limitation of the invention.In order to be clearly shown all parts
Details, what all parts in attached drawing were not necessarily drawn to scale, so the ratio of all parts in attached drawing also should not be used as
A kind of limitation.
Although some embodiments of present general inventive concept have been shown and have illustrated, those of ordinary skill in the art will be managed
Solution can make a change these embodiments in the case where the principle and spirit without departing substantially from present general inventive concept, of the invention
Range is limited with claim and their equivalent.
Claims (16)
1. a kind of heat exchanger, comprising:
Central tube, the central tube extend to the lower end of heat exchanger from the upper end of heat exchanger；
Central lumen, the central lumen are used to accommodate the upper part of the central tube, and the central lumen side is equipped with outlet
Pipe；
The cylinder connecting with the central lumen, the cylinder are used to accommodate the lower part of the central tube；And
Heat-exchanging tube bundle, the heat-exchanging tube bundle are set in the cylinder, and are arranged around the central tube；
Wherein, tube side fluid flow to the lower end of heat exchanger from the upper end edge central tube of heat exchanger, and changes from the lower end edge of heat exchanger
Heat pipe bundle flow to central lumen, then flows out from outlet；
The top of the cylinder is equipped with inlet window, and the lower part of the cylinder is equipped with exit window, and shell-side fluid is from the inlet window stream
Enter and is flowed out from the exit window.
2. heat exchanger according to claim 1, which is characterized in that the central lumen includes radially extending along heat exchanger
First chamber and the second chamber axially extending along heat exchanger, the outlet are set to the second chamber side.
3. heat exchanger according to claim 2, which is characterized in that the heat exchanger further includes shell, and the shell surrounds
The central lumen setting.
4. heat exchanger according to claim 3, which is characterized in that the shell is equipped with support, and the support is used for will
Heat exchanger is installed to submergence container.
5. heat exchanger according to claim 4, which is characterized in that the heat exchanger further includes heat insulation structural, described heat-insulated
Structure is set between the shell and the second chamber, and is arranged close to the support.
6. heat exchanger according to claim 1, which is characterized in that the upper end of the cylinder is equipped with upper perforated plate, the cylinder
Lower end be equipped with lower perforated plate, the both ends of the heat-exchanging tube bundle are mounted respectively to the upper perforated plate and the lower perforated plate.
7. heat exchanger according to claim 6, which is characterized in that the lower end of the heat exchanger be equipped with lower head, it is described in
Heart pipe protrudes into the lower head.
8. heat exchanger according to claim 7, which is characterized in that the lower head is connected to the lower perforated plate, and even
Meeting place, there are gaps.
9. heat exchanger according to claim 7, which is characterized in that be equipped with flow distribution structure in the lower head.
10. heat exchanger according to claim 9, which is characterized in that between the central tube and the flow distribution structure
There are gaps.
11. heat exchanger according to claim 1, which is characterized in that the heat-exchanging tube bundle is equipped with bending section, changes for compensating
Thermal expansion difference between heat pipe bundle and cylinder.
12. heat exchanger according to claim 11, which is characterized in that the bending section of the heat-exchanging tube bundle is along annular arrangement.
13. heat exchanger according to claim 6, which is characterized in that the heat exchanger further includes the axial direction row along heat exchanger
Multiple support constructions of column, are used to support the heat-exchanging tube bundle.
14. heat exchanger according to claim 13, which is characterized in that be equipped between the upper perforated plate and the lower perforated plate more
A pull rod, the multiple pull rod are connect with the multiple support construction.
15. heat exchanger according to claim 14, which is characterized in that the multiple pull rod has bending section.
16. heat exchanger according to claim 1, which is characterized in that be equipped with drain pipe in the central tube, changed for being discharged
Remaining tube side fluid in hot device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910195838.3A CN109883222A (en) | 2019-03-14 | 2019-03-14 | Heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195838.3A CN109883222A (en) | 2019-03-14 | 2019-03-14 | Heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110580959A (en) * | 2019-09-19 | 2019-12-17 | 中国原子能科学研究院 | Sodium-air heat exchanger |
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| CN108981427A (en) * | 2018-07-09 | 2018-12-11 | 中国核动力研究设计院 | A kind of tubular heat exchanger |
| CN109443043A (en) * | 2018-09-05 | 2019-03-08 | 西安交通大学 | A kind of lead-supercritical carbon dioxide Intermediate Heat Exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110580959A (en) * | 2019-09-19 | 2019-12-17 | 中国原子能科学研究院 | Sodium-air heat exchanger |
| CN110580959B (en) * | 2019-09-19 | 2021-05-04 | 中国原子能科学研究院 | Sodium-air heat exchanger |
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