CN209445845U - A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer - Google Patents
A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer Download PDFInfo
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- CN209445845U CN209445845U CN201821926121.9U CN201821926121U CN209445845U CN 209445845 U CN209445845 U CN 209445845U CN 201821926121 U CN201821926121 U CN 201821926121U CN 209445845 U CN209445845 U CN 209445845U
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- molten salt
- temperature molten
- tube
- tube shell
- heat exchanger
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Abstract
A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer disclosed by the utility model, including U-tube shell, tube bank is provided in U-tube shell, several baffle plates are additionally provided in the direct current section of U-tube shell, tube bank sequentially passes through several baffle plates, the both ends of U-tube shell are provided with sealed pipe plate, and each sealed pipe plate is respectively connected with a bobbin carriage, and the end of tube bank passes through the sealed pipe plate and is connected to bobbin carriage；High-temperature molten salt import and high-temperature molten salt outlet are provided on the side wall of U-tube shell.The structure of the heat exchanger apparatus of the utility model is simpler, and economy is more preferable.
Description
Technical field
The utility model belongs to photo-thermal power generation technical field of heat exchangers, and in particular to one kind is used for high-temperature molten salt convective heat transfer
Heat exchanger apparatus.
Background technique
It is the solar energy thermal-power-generating station with heat storage capacity mostly in current solar light-heat power-generation technical field.?
In engineer application, photo-thermal power generation mainly includes four kinds of technology paths: slot type, tower, linear Fresnel formula and dish-style, this several hair
Electric mode can be combined with low cost, large-scale hold over system, realize the continuous adjustability of electricity generation system, and to environment friend
It is good, it is pollution-free.Based on this reason, photo-thermal power generation is a kind of generation technology of more prospect by internationally recognized.Photo-thermal power generation
Principle be to absorb solar energy using fused salt as heat-storage medium, fused salt heat dump is irradiated, by heat exchanger by the heat in fused salt
The heat being converted in Rankine cycle.Heat-storage medium fused salt needed for it, different from traditional heat transfer medium, physical property is with temperature
Degree variation is clearly.Due to the development of photo-thermal power generation technology, it is be unable to do without heat transfer heat storage medium, while with the hair of science and technology
Exhibition, fused salt rely on its good heat-transfer, using temperature height, the unique advantages such as price is low, in terms of using energy source increasingly by
The concern of people.The usual fused salt refers generally to the mixture of the salts such as nitrate, fluoride salt, and, saturation big with specific heat capacity is steamed
The hot physical property features such as vapour pressure is low, are very suitable for serving as heat transfer heat-storage medium, have in nuclear energy power generation and photo-thermal power generation wide
Application prospect.And it is that one kind can be realized heat-absorbing medium and heat accumulation is situated between that heat exchanger to be used is needed in carrying out heat transfer process
The device of energy exchange, the wherein energy exchange of heat-absorbing medium and heat-storage medium are carried out between matter, heat-storage medium and acting medium
It is accomplished that energy stores, the energy exchange of heat-storage medium and acting medium is accomplished that energy storage discharges.It is domestic for heat exchanger
Corresponding experimental study has been carried out outside, and the heat exchanger research in China is started by Oak Ridge National Laboratory, wherein shell
Formula fused salt heat exchanging device is the major structural types of current fused salt heat exchanging device.
At present fused salt heat exchanging device using and design still face it is many for the use of the problem of.Fused-salt medium is high-temperature low-pressure Jie
Matter, aqueous medium are high-temperature high-pressure medium, one side high pressure in fused salt heat exchanging device, and one side low pressure cannot effectively guarantee low-pressure side
Safety.Meanwhile heat exchange temperature end difference is big, the problem of thermal stress, also fails to very good solution.And fused salt freezes in pipeline
Knot or remaining impurity cannot be removed well, and fused salt heat exchanging device urgent problem at present.Therefore, it needs a kind of new
Heat exchange equipment solve the above problems
Utility model content
The purpose of the utility model is to provide a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer, the heat exchanger
Structure is simpler, and economy is more preferable.
The utility model is the technical scheme adopted is that a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer, packet
U-tube shell is included, tube bank is provided in U-tube shell, several baffle plates are additionally provided in the direct current section of U-tube shell, is managed
Beam sequentially passes through several baffle plates, and the both ends of U-tube shell are provided with sealed pipe plate, and each sealed pipe plate is respectively connected with one
A bobbin carriage, the end of tube bank pass through sealed pipe plate and are connected to bobbin carriage；Be provided on the side wall of U-tube shell high-temperature molten salt import and
High-temperature molten salt outlet.
The utility model is further characterized in that,
Several cleaning sewage draining exits are provided on the side wall of U-tube shell bend loss.
The number for cleaning sewage draining exit is four.
Baffle plate is segmental baffle.
Telescopic joint is provided at the center of U-tube shell bend loss, telescopic joint runs through the bend loss of U-tube shell.
It further include having support shaft, support shaft sequentially passes through two straight pipes of U-tube shell.
The beneficial effects of the utility model are:
(1) heat exchanger shell and tube bank are all U-tube, and fused salt makes to be not easy to be formed short circuit in shell fluid flow or flowing is dead
Area, fouling condition can substantially reduce between pipe；
(2) support shaft is set near straight pipe and bend loss joining place, fused salt can be effectively reduced in shell flowing, punching
Hitting tube bank and the vibration of shell bring influences.Simultaneously as bend loss causes ability to bear due to bending degree problem in U-tube
Weaken, when the effect in flow rate of molten salt larger Shi Qi support bend pipe area, be not easy to damage U-shaped pipe, ruptures；
(3) baffle plate is arranged inside shell side can effectively increase fused salt and restrain the heat exchange area of interior medium, so that heat exchange
Effect is better, and heat transfer effect is more increased, while baffle plate, in addition to making fused salt cross tube bank flowing, there are also supports to restrain, and prevents
Tube bundle vibration and curved effect；
(4) be arranged telescopic joint, since fused salt is a kind of high temperature fluid, when flow through near bend pipe with the medium in tube bank into
When row heat convection, U-tube bent tube section can be made to generate deformation due to thermal stress will lead to U if thermal stress is excessive
Type pipe is damaged, adds an expansion energy-saving and effectively provides a kind of stretching and contraction for pipe bent position.Meanwhile it being set in central part
Percussion when fused salt flows through bend pipe to pipe bent position can be slowed down by setting telescopic joint, increase the service life of U-tube；
(5) four cleaning sewage draining exits are set, since fused salt easily may generate heap in bent tube section during heat transfer flow
Product impurity can preferably clean the impurity of pipe bent position in pipe bent position setting sewage draining exit；
(6) the utility model is easy to use, and apparatus structure is simple, has preferable economy, can be solar power station
Heat exchange more reasonable device basic is provided.
Detailed description of the invention
Fig. 1 is a kind of two-dimensional structure top view of the heat exchanger apparatus for high-temperature molten salt convective heat transfer of the utility model；
Fig. 2 is the structural representation of baffle plate in a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer of the utility model
Figure.
In figure, 1. high-temperature molten salt imports, 2. sealed pipe plates, 3. bobbin carriages, 4. cleaning sewage draining exits, 5. telescopic joints, 6. supports
Axis, 7. tube banks, 8. baffle plates, 9.U type pipe shell, the outlet of 10. high-temperature molten salts.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer of the utility model, as shown in Figs. 1-2, including U-tube
Shell 9, U-tube shell 9 include two straight pipes and the bend loss being arranged between two straight pipes, setting in U-tube shell 9
There is tube bank 7, inside tube bank 7 is high temperature resistant, and corrosion-resistant stainless steel pipe, tube wall is relatively thin, it is consistent with external 9 shape of U-tube shell, all
For U-tube, pipe bent position bending degree is determined by material bending yield factor；It is additionally provided in the direct current section of U-tube shell 9 several
A baffle plate 8, tube bank 7 sequentially pass through several baffle plates 8, and the both ends of U-tube shell 9 are provided with sealed pipe plate 2, Mei Gemi
Tube sealing plate 2 is respectively connected with a bobbin carriage 3, restrain 7 end pass through sealed pipe plate 2 be connected to bobbin carriage 3；The side wall of U-tube shell 9
On be provided with high-temperature molten salt import 1 and high-temperature molten salt outlet 10, high-temperature molten salt import 1 and high-temperature molten salt outlet 10 are stainless steel
Circular hole opening, high-temperature molten salt import 1 and high-temperature molten salt outlet 10 are arranged outside horizontal wall surface, in 9 side wall surface phase of U-tube shell
It is mutually symmetrical, the flow of heat convection is carried out according to high-temperature molten salt and heat determines round inlet diameter size.
Several cleaning sewage draining exits 4 are provided on the side wall of 9 bend loss of U-tube shell.
The number for cleaning sewage draining exit 4 is four, and four cleaning sewage draining exits 4 are evenly distributed on 9 bend loss of U-tube shell
On side wall, first be located at U-tube shell bend loss outside side wall 1/4 at, second be located at bend loss outside side wall
Center at, third is at the 3/4 of the outside side wall of bend loss, the center of the 4th inside side wall for being located at bend loss
Place.
Baffle plate 8 is segmental baffle, and the spacing of segmental baffle is no less than the 1/5 of housing inner diameter, and is not less than
50mm, maximum no more than barrel bore, the uniform equidistant placement in the effective length of U-shaped Straight Pipes of Heat Exchanger section；Baffle plate 8 exists
The arrangement mode of straight pipe is that one side jaggy is staggered up and down.
Telescopic joint 5 is provided at the center of 9 bend loss of U-tube shell, telescopic joint 5 runs through the bend loss of U-tube shell 9,
Telescopic joint is high temperature resistant, and resistant material is not connected positioned at the bend loss immediate vicinity of U-tube shell 9 with cleaning sewage draining exit
It connects, it is adjacent thereto.
It further include having support shaft 6, support shaft 6 sequentially passes through two straight pipes of U-tube shell 9, and close to bend loss
With the joining place of straight pipe, entire about 9 pipeline of U-tube shell perforation is connected and fixed.
As shown in Figs. 1-2, high-temperature molten salt by high-temperature molten salt import 1 enter U-tube shell 9 among, along shell wall carry out around
Stream flowing.Meanwhile the medium of cryogenic high pressure enters U-shaped pipe along interior tube bank 7 by the bobbin carriage 3 of 9 other end of U-tube shell
Heat convection is carried out with fused salt.After high-temperature molten salt enters shell side by high-temperature molten salt import 1, can constantly it be flowed to bend loss, edge
Tube wall can encounter baffle plate 8 when streaming flow forward, since the baffle plate 8 of this design is arch, fused salt can be made around baffle plate stream
When dynamic, flow blind angle is less, and segmental baffle can greatly increase the heat exchange area of medium in high-temperature molten salt and tube bank 7,
Can heat transfer effect be greatly improved.When high-temperature molten salt flows into bend loss around baffle plate by straight pipe, U-tube pipe
Bend loss in shell 9 can generate thermal stress due to being heated suddenly, and thermal stress can promote bend pipe to expand.When bend loss expansion, stretch
Casing coupling 5 can be provided a supporting role to 9 bend loss of U-tube shell, reduce the impact effect of thermal stress.Then high-temperature molten salt is by U-shaped
The bend loss of pipe shell 9 flows out,, can be by 10 stream of high-temperature molten salt outlet after baffle plate streams heat exchange into other end straight pipe
Enter the outer loop stage out.Simultaneously because the cryogenic high pressure medium and high-temperature molten salt in internal tube bank 7 carry out heat convection, obtain
Heat has been arrived, after this Absorption of Medium heat is flowed out by the bobbin carriage 3 ipsilateral with high-temperature molten salt import 1, external mine-laying can be carried out
Pause and recycle, made full use of so that the heat that heat exchange obtains enters in circulation, and turbine is driven to do manual work, to realize that generating and heating is made
With.
Claims (6)
1. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer, which is characterized in that including U-tube shell (9), the U
It is provided with tube bank (7) in type pipe shell (9), several baffle plates (8) is additionally provided in the direct current section of the U-tube shell (9),
The tube bank (7) sequentially passes through several baffle plates (8), and the both ends of the U-tube shell (9) are provided with sealed pipe plate
(2), each sealed pipe plate (2) is respectively connected with a bobbin carriage (3), and the end of the tube bank (7) passes through the sealed pipe plate
(2) it is connected to the bobbin carriage (3)；High-temperature molten salt import (1) and high-temperature molten salt are provided on the side wall of the U-tube shell (9)
It exports (10).
2. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer according to claim 1, which is characterized in that described
Several cleanings sewage draining exit (4) are provided on the side wall of U-tube shell (9) bend loss.
3. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer according to claim 2, which is characterized in that described
The number for cleaning sewage draining exit (4) is four.
4. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer according to claim 1, which is characterized in that described
Baffle plate (8) is segmental baffle.
5. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer according to claim 1, which is characterized in that described
It is provided with telescopic joint (5) at the center of U-tube shell (9) bend loss, the telescopic joint (5) runs through the bend pipe of U-tube shell (9)
Section.
6. a kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer according to claim 1, which is characterized in that also wrap
It has included support shaft (6), the support shaft (6) sequentially passes through two straight pipes of U-tube shell (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926121.9U CN209445845U (en) | 2018-11-22 | 2018-11-22 | A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926121.9U CN209445845U (en) | 2018-11-22 | 2018-11-22 | A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209445845U true CN209445845U (en) | 2019-09-27 |
Family
ID=68012137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821926121.9U Expired - Fee Related CN209445845U (en) | 2018-11-22 | 2018-11-22 | A kind of heat exchanger apparatus for high-temperature molten salt convective heat transfer |
Country Status (1)
| Country | Link |
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| CN (1) | CN209445845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822746A (en) * | 2019-12-04 | 2020-02-21 | 北京工业大学 | Fused salt jet heat exchanger based on solar energy spotlight |
| CN111076571A (en) * | 2019-12-27 | 2020-04-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Shell and tube heat exchanger |
-
2018
- 2018-11-22 CN CN201821926121.9U patent/CN209445845U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822746A (en) * | 2019-12-04 | 2020-02-21 | 北京工业大学 | Fused salt jet heat exchanger based on solar energy spotlight |
| CN110822746B (en) * | 2019-12-04 | 2024-06-04 | 北京工业大学 | Fused salt jet heat exchanger based on solar condensation |
| CN111076571A (en) * | 2019-12-27 | 2020-04-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Shell and tube heat exchanger |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190927 Termination date: 20211122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |