CN220039179U - Novel preheating evaporator for solar thermal power generation system - Google Patents
Novel preheating evaporator for solar thermal power generation system Download PDFInfo
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- CN220039179U CN220039179U CN202321194100.3U CN202321194100U CN220039179U CN 220039179 U CN220039179 U CN 220039179U CN 202321194100 U CN202321194100 U CN 202321194100U CN 220039179 U CN220039179 U CN 220039179U
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- shell side
- shell
- pure water
- water chamber
- hydroecium
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- 238000010248 power generation Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 150000003839 salts Chemical class 0.000 claims abstract description 33
- 238000005253 cladding Methods 0.000 claims abstract description 12
- 241000237942 Conidae Species 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 230000008014 freezing Effects 0.000 abstract description 6
- 238000007710 freezing Methods 0.000 abstract description 6
- 230000008676 import Effects 0.000 abstract 2
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
Abstract
The utility model relates to a novel preheating evaporator for a solar thermal power generation system. At present, the whole system pipeline of the solar steam generation system is complex, the side freezing and blocking risk of the molten salt of the system is high, and the freezing and blocking preventing cost is high. A novel preheating evaporator for a solar thermal power generation system, comprising: the device comprises a water chamber (A), a pipe system (B), a shell (C) and a support (D), wherein the water chamber is connected with the pipe system, and the shell is connected with the support; the hydroecium has hydroecium manhole (1), hydroecium barrel (2), fused salt import (3), fused salt export (25), hydroecium head (26) are constituteed, and the hydroecium manhole passes through the hydroecium head and is connected with the hydroecium barrel, and the hydroecium barrel is respectively with fused salt import and fused salt export connection. The pipe system consists of a pipe plate (4), a shell side short cylinder body (5), a supporting plate (12), a sliding block (13), a pure water section baffle (14), a pure water section upper cladding (15) and the like. The utility model is applied to the field of solar steam generation systems.
Description
Technical Field
The utility model relates to a novel preheating evaporator for a solar thermal power generation system.
Background
The prior solar steam generation system comprises a preheater, an evaporator and a superheater, wherein the preheater heats the feed water to a temperature slightly lower than the evaporation critical temperature, the evaporator heats the feed water to saturated steam slightly lower than the evaporation critical temperature, and the superheater heats the saturated steam to a required temperature. Three devices are connected through a pipeline, high-temperature molten salt exchanges heat from the superheater, the evaporator and the preheater in sequence, the temperature is reduced to low-temperature molten salt, the pipeline of the whole system is complex, the side freezing and blocking risk of the molten salt of the system is high, and the freezing and blocking preventing cost is high. The preheating evaporator is mainly used for carrying out heat transfer between molten salt and water medium in a solar thermal power generation system, directly heating water supply to saturated steam, and conveying the saturated steam to the superheater so as to meet the requirements of technological system flow.
Disclosure of Invention
The utility model aims to provide a novel preheating evaporator for a solar thermal power generation system.
The above object is achieved by the following technical scheme:
a novel preheating evaporator for a solar thermal power generation system, comprising: the device comprises a water chamber, a pipe system, a shell and a support, wherein the shell is connected with the support;
the water chamber is provided with a water chamber manhole, a water chamber cylinder, a fused salt inlet, a fused salt outlet and a water chamber seal head, wherein the water chamber manhole is connected with the water chamber cylinder through the water chamber seal head, and the water chamber cylinder is respectively connected with the fused salt inlet and the fused salt outlet;
the pipe system comprises a pipe plate, a shell side short cylinder body, a supporting plate, a sliding block, a pure water section baffle, a pure water section upper shell, a baffle plate A, a supporting leg, a pure water section shell, a baffle plate B, a supporting lug, a baffle plate, a water supply inlet and a U-shaped heat exchange pipe, wherein the pipe plate is respectively connected with one ends of the U-shaped heat exchange pipe and the shell side short cylinder body, the pure water section baffle, the pure water section upper shell and the pure water section shell form a pure water section, the baffle plate A and the baffle plate B are uniformly distributed in the pure water section, the lower part of the pure water section shell is respectively connected with the supporting leg, the water supply inlet and the baffle plate, the U-shaped heat exchange pipe is connected with the supporting plate, and the sliding block is used for fixing the supporting plate;
the shell consists of a shell side long cylinder body, a shell side cone shell, a shell side sealing head and a shell side short cylinder body, wherein the shell side short cylinder body is connected with one end of the shell side cone shell, the other end of the shell side cone shell is connected with one end of the shell side long cylinder body, and the other end of the shell side long cylinder body is connected with the shell side sealing head;
the support consists of a group of sliding supports.
A novel warmup evaporator for solar thermal power generation system, the shell side long section of thick bamboo section of casing in install the silk screen demister, silk screen demister is connected with steam outlet, effectively guarantees steam outlet dryness.
The novel preheating evaporator for the solar thermal power generation system is characterized in that the tube plate is in full-welded and penetrating connection with the water chamber, the tube plate is in hole welding connection with the U-shaped heat exchange tube, and a shockproof device is arranged in the middle of an elbow of the U-shaped heat exchange tube.
The utility model has the beneficial effects that:
1. the utility model solves the problems that when the steam parameters of the solar thermal power generation system are low, the heat exchange area of the preheater is too small and the performance is not easy to realize, reduces the risk of side freezing and blocking of molten salt, and simplifies the arrangement of pipelines and other accessories of the steam generation system. The heat exchanger synthesizes the preheater and the evaporator into a brand new device, so that the pipeline of the traditional steam generation system is effectively simplified, and the risk of side freezing and blocking of molten salt is reduced.
2. The heat exchanger consists of a preheating section and an evaporating section, a short cylinder body, an irregular conical cylinder body and a long cylinder body, wherein the heat exchanger consists of a water chamber on the shell side, and the heat exchange tube is U-shaped and adopts a strength expansion and strength welding structure with a tube plate. The structure fuses the preheater and the evaporator into one device, solves the problems that the heat exchange area of the preheater of the low-parameter main steam is too small, the performance is not easy to realize, the connecting pipeline of the device is complex, and the parameters of the system are complex.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is an enlarged view of a portion of fig. 1.
In the figure: A. the water chamber, B, piping, C, a shell, D, a support, 1, a water chamber manhole, 2, a water chamber cylinder, 3, a molten salt inlet, 4, a tube plate, 5, a shell side short cylinder, 6, a shell side cone shell, 7, a shell side long cylinder, 8, a steam outlet, 9, a wire mesh foam remover, 10, a shell side seal head, 11, a sliding support, 12, a support plate, 13, a slide block, 14, a pure water section baffle, 15, a pure water section upper shell, 16, a baffle A,17, a support leg, 18, a pure water section shell, 19, a baffle B,20, a fixed support, 21, a support lug, 22, a baffle, 23, a water supply inlet, 24, a U-shaped heat exchange tube, 25, a molten salt outlet, 26 and a water chamber seal head.
Detailed Description
Examples
A novel preheating evaporator for a solar thermal power generation system, comprising: the water chamber A, the pipe system B, the shell C and the support D; the water chamber is provided with a water chamber manhole, a water chamber cylinder body 2, a molten salt inlet 3, a molten salt outlet 25 and a water chamber seal head 26, wherein the water chamber manhole is connected with the water chamber cylinder body through the water chamber seal head, and the water chamber cylinder body is respectively connected with the molten salt inlet and the molten salt outlet. The pipe system consists of a pipe plate 4, a shell side short cylinder body 5, a supporting plate 12, a sliding block 13, a pure water section baffle 14, a pure water section upper cladding 15, a baffle plate A16, a supporting leg 17, a pure water section cladding 18, a baffle plate B19, a supporting lug 21, a baffle plate 22, a water supply inlet 23 and a U-shaped heat exchange pipe 24; the tube plate is connected with the U-shaped heat exchange tube and one end of the shell side short cylinder body respectively, the pure water section baffle 14 and the pure water section upper cladding and the pure water section cladding 18 form a pure water section, the baffle A16 and the baffle B19 are uniformly distributed in the pure water section, the lower part of the pure water section cladding is connected with the supporting leg and the baffle respectively, and the U-shaped heat exchange tube is connected with the supporting plate. The shell C consists of a shell side long barrel 7, a shell side cone shell 6, a shell side sealing head 10 and a shell side short barrel 5, wherein the shell side short barrel is connected with one end of the shell side cone shell, the other end of the shell side cone shell is connected with one end of the shell side long barrel, and the other end of the shell side long barrel is connected with the shell side sealing head. The support D is composed of a set of sliding supports 11. A silk screen foam remover 9 is arranged in the long barrel section of the shell side of the shell, and the silk screen foam remover is connected with a steam outlet 8. The tube plate 4 is in full-welded and penetrating connection with the water chamber A, is in hole-welded connection with the U-shaped heat exchange tube 24, and a shock-proof device is arranged in the middle of an elbow of the U-shaped heat exchange tube 24.
The device is suitable for a solar thermal power generation steam generation system, including a cogeneration unit or a heating unit and the like. The method is suitable for pipe side molten salt media, water and steam media are arranged outside the pipe, the temperature of main steam is between 350 ℃ and 100t/h at maximum, and the pressure of the main steam is about 8MPa at maximum.
The molten salt medium can be binary molten salt or ternary molten salt, and the salt temperature of the outlet of the preheating evaporator is ensured. Taking Solar Salt as an example (Solar Salt,60% NaNO3+40% KNO3 by mass fraction), the melting point of the Solar Salt is 220 ℃, and the highest running temperature can reach 585 ℃.
When the main steam parameter is low, the heat required for heating the feed water to saturated water is not large, the whole area of the preheater is very small, and pipelines and accessories are required to be arranged, so that the area of the preheater can be loaded into the evaporator, namely, the shell side of the novel preheating evaporator adopts a kettle type structure. The shell side comprises two parts, including pure water section and evaporation zone, and the pure water section utilizes hydrophobic baffle, and hydrophobic upper cladding and water seal board realize the water seal, reach the preheating effect of feedwater, realize the boiling of water in the big space (evaporation zone) of kettle type evaporator shell side. The silk screen demister is utilized to realize good steam-water separation capability and meet the requirements of the saturated steam dryness of the outlet under different loads.
The novel heat exchange tube of the heat exchanger adopts a U-shaped tube, and a supporting device is arranged on a tube system, so that the rigidity, the stability and the good thermal expansibility of the structure are ensured. The heat exchange tube bending section is provided with a vibration-proof device, the vibration-proof device consists of thin plates, and the thin plates are clamped between the heat exchange tubes, so that vibration caused by overlarge unsupported span of the U-shaped tubes is avoided.
Claims (3)
1. A novel preheating evaporator for a solar thermal power generation system, comprising: hydroecium, piping, casing and support, characterized by: the water chamber is connected with the pipe suction system, and the shell is connected with the support;
the water chamber is provided with a water chamber manhole, a water chamber cylinder, a fused salt inlet, a fused salt outlet and a water chamber seal head, wherein the water chamber manhole is connected with the water chamber cylinder through the water chamber seal head, and the water chamber cylinder is respectively connected with the fused salt inlet and the fused salt outlet;
the system comprises a tube plate, a shell side short tube body, a supporting plate, a sliding block, a pure water section baffle, a pure water section upper cladding, a baffle plate A, a supporting leg, a pure water section cladding, a baffle plate B, a supporting lug, a baffle plate, a water supply inlet and a U-shaped heat exchange tube, wherein the tube plate is respectively connected with one ends of the U-shaped heat exchange tube and the shell side short tube body, the pure water section baffle plate, the pure water section upper cladding and the pure water section cladding form a pure water section, the baffle plate A and the baffle plate B are uniformly distributed in the pure water section, the lower part of the pure water section cladding is respectively connected with the supporting leg and the baffle plate, the U-shaped heat exchange tube is connected with the supporting plate, and the sliding block is used for fixing the supporting plate;
the shell consists of a shell side long cylinder body, a shell side cone shell, a shell side sealing head and a shell side short cylinder body, wherein the shell side short cylinder body is connected with one end of the shell side cone shell, the other end of the shell side cone shell is connected with one end of the shell side long cylinder body, and the other end of the shell side long cylinder body is connected with the shell side sealing head;
the support consists of a group of sliding supports.
2. The novel preheating evaporator for a solar thermal power generation system according to claim 1, characterized in that: the silk screen foam remover is arranged in the long barrel body section of the shell side of the shell and is connected with the steam outlet, so that the dryness of the steam outlet is effectively ensured.
3. The novel preheating evaporator for a solar thermal power generation system according to claim 1, characterized in that: the tube plate is connected with the water chamber in a full-welding and penetrating way, is connected with the U-shaped heat exchange tube in a strength expansion strengthening degree welding way, and is provided with a shockproof device in the middle of an elbow pipe of the U-shaped heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321194100.3U CN220039179U (en) | 2023-05-17 | 2023-05-17 | Novel preheating evaporator for solar thermal power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321194100.3U CN220039179U (en) | 2023-05-17 | 2023-05-17 | Novel preheating evaporator for solar thermal power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220039179U true CN220039179U (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321194100.3U Active CN220039179U (en) | 2023-05-17 | 2023-05-17 | Novel preheating evaporator for solar thermal power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220039179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117298621A (en) * | 2023-11-30 | 2023-12-29 | 南京天加环境科技有限公司 | Kettle type evaporator |
-
2023
- 2023-05-17 CN CN202321194100.3U patent/CN220039179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117298621A (en) * | 2023-11-30 | 2023-12-29 | 南京天加环境科技有限公司 | Kettle type evaporator |
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