CN207730068U - A kind of large-scale storage tank barrel preheating structure - Google Patents
A kind of large-scale storage tank barrel preheating structure Download PDFInfo
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- CN207730068U CN207730068U CN201721804443.1U CN201721804443U CN207730068U CN 207730068 U CN207730068 U CN 207730068U CN 201721804443 U CN201721804443 U CN 201721804443U CN 207730068 U CN207730068 U CN 207730068U
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- storage tank
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- barrel
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- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a kind of large-scale storage tank barrel preheating structures, the storage tank barrel is double-layer structure, the double-layer structure upper and lower side of the storage tank barrel is closed, and flue-gas flow annular space is formed between double-layer structure, bottom is provided with annular gas distributor pipe in the flue-gas flow annular space, the double-layer structure bottom of the storage tank barrel is provided with flue gas import, the flue gas import is connected to annular gas distributor pipe, and the exhaust chimney being connected to flue-gas flow annular space is provided at the top of the double-layer structure of the storage tank barrel.The narrow flue-gas flow annular space that the utility model is formed by using storage tank barrel double-layer structure, flue gas enters from bottom, it is discharged from top vent chimney, make flue gas that can form turbulent flow in annular space with smaller flow, augmentation of heat transfer, simultaneously with barrel and thermal insulation material heat convection, have the function that preheat barrel and baking and thermal insulation material.
Description
Technical field
The utility model belongs to solar light-heat power-generation technical field, more particularly to a kind of to be suitable for energy-accumulating power station, the sun
The large-scale fused salt storage tank barrel preheating structure of energy photo-thermal power station energy-storage system.
Background technology
Currently, the power generation of the non-fossil energy has multiple pathways, wherein wind power generation, photovoltaic generation, solar light-heat power-generation, core
It can power generation all commercializations extensively.But these emerging new energy power stations may all be influenced by external factor such as weather, and power station goes out
Power cannot be matched according to the peak valley of the power load of power grid.Molten salt energy-storage technology is to solve generation of electricity by new energy to match with power grid
Important channel, have begun to apply in emerging photo-thermal power station.Large-scale fused salt storage tank is as energy storage core equipment, service life
The safety and economic benefit in power station are directly related to safety.
Service life of fused salt storage tank and safety are not only related with the structure design of equipment itself, also with preheating when initial start-up
It is related.It is 300~350 DEG C that fused salt storage tank fills temperature of molten salt for the first time, and the barrel and bottom plate for being now in the storage tank of cold conditions will be held
By huge thermal shock load, storage tank barrel and bottom deformation is caused to crack, storage tank damage.Therefore it before first fill, needs
The barrel of storage tank and bottom plate are preheated to 300 DEG C, is the key that protection storage tank, extends its service life.Current domestic and international photo-thermal
Large-scale fused salt storage tank generally use flue gas in power station, which is passed directly into tank, to be preheated, and this method has following deficiency：
1, preheating is that large space natural convection air exchanges heat in the direct tank of flue gas, and flowing of the flue gas in tank is by density
Difference pushes, and can not accomplish to accurately control, in driving process, even if can not timely and effectively adjust if monitoring non-uniform temperature
Section.
Easily there is flow dead zone in storage tank base angle when 2, preheating, and causes bottom plate and barrel uneven heating, local thermal stress excessively high
It may lead to tank body Local Damaged.
3, flue gas is preheated since tank diameter is big, and flow velocity is extremely low（Usual 0.01m/s）, heat transfer coefficient is low, energy utilization
Rate is low.Simultaneously as containing combining water in the thermal insulation material of storage tank, in warm the evaporation of water will take away big calorimetric, cause
Storage tank barrel needs long-time heating to can be only achieved technological requirement temperature, and energy consumption is high.
4, flue gas is directly entered in tank and can retain, and pollutes fused salt in the future.
5, flue gas preheating can only carry out under slack tank state, when storage tank enters the strip production phase, be carried out to storage tank
Concurrent heating is anti-condensation, it is also necessary to electrical immersion heater be arranged.This electrical immersion heater is installed in storage tank tube wall opening, makes barrel
Structure is discontinuous.Under high temperature and temperature change state, stress concentration is caused, increases weld cracking, the wind that high-temperature molten salt is revealed
Danger.
Solar energy thermo-power station should all reduce fossil to the greatest extent as new energy power station, in driving debugging and normal operating phase
The consumption of the energy, energy very little needed for the heating of barrel itself when preheating, but baking and thermal insulation material needs a large amount of energy.Simultaneously
Since space is big in storage tank, flue gas flow velocity is low, poor heat transfer, leads to a large amount of gas consumption, drives of high cost, it is therefore desirable to
Develop it is a kind of can strengthen storage tank barrel preheating technology solve the above problems.
Utility model content
The goal of the invention of the utility model is：In view of the above problems, it provides one kind and can effectively solve the problem that fused salt
For storage tank in warm, barrel preheats the large-scale storage tank barrel preheating structure for the problems such as uneven, the time is long, high energy consumption.
What the technical solution of the utility model was realized in：A kind of large-scale storage tank barrel preheating structure, the storage tank cylinder
Wall is double-layer structure, it is characterised in that：The double-layer structure upper and lower side of the storage tank barrel is closed, and cigarette is formed between double-layer structure
Road flow of air annular space, bottom is provided with annular gas distributor pipe in the flue-gas flow annular space, in the storage tank barrel
Double-layer structure bottom is provided with flue gas import, and the flue gas import is connected to annular gas distributor pipe, in the storage tank cylinder
It is provided with the exhaust chimney being connected to flue-gas flow annular space at the top of the double-layer structure of wall.
Large-scale storage tank barrel preheating structure described in the utility model, if being provided on the annular gas distributor pipe
Dry opening up distributor pipe spray orifice.
Large-scale storage tank barrel preheating structure described in the utility model, the flue gas stream in the flue-gas flow annular space
Speed is 0.1~2m/s.
Large-scale storage tank barrel preheating structure described in the utility model, the storage tank is single wall tank, in storage tank shell
Insulating layer periphery is provided with metal chuck, and the metal chuck collectively forms the storage tank barrel of double-layer structure, institute with storage tank shell
Formation flue-gas flow annular space between metal chuck and storage tank shell is stated, the flue gas import and exhaust chimney are separately positioned on
The bottom and top of metal chuck.
Large-scale storage tank barrel preheating structure described in the utility model, the upper and lower end face of the metal chuck respectively with storage
The upper and lower end face of tank tank skin flushes, and bottom and top are all closed.
Large-scale storage tank barrel preheating structure described in the utility model, the storage tank are double-walled envelope tank, the double-walled
The interior tank skin and outer tank skin of jacket canister collectively form the storage tank barrel of double-layer structure, and cigarette is formed between the interior tank skin and outer tank skin
Road flow of air annular space, the flue gas import and exhaust chimney are separately positioned on the bottom and top of outer tank skin.
Large-scale storage tank barrel preheating structure described in the utility model, the interior tank skin and outer tank skin upper and lower side flush and
It is all closed, insulating layer is provided on the inside of the outer tank skin.
The narrow flue-gas flow annular space that the utility model is formed by using storage tank barrel double-layer structure, flue gas is the bottom of from
Portion enters, and is discharged from top vent chimney, makes flue gas that can form turbulent flow in annular space with smaller flow, strengthens and passes
Heat, at the same with barrel and thermal insulation material heat convection, have the function that preheat barrel and baking and thermal insulation material.
Description of the drawings
Fig. 1 is the structural schematic diagram that the utility model is used for the preheating of single wall tank.
Fig. 2 is the structural schematic diagram that the utility model is used for the preheating of double-walled envelope tank.
It is marked in figure：1 is flue-gas flow annular space, and 2 be annular gas distributor pipe, and 3 be flue gas import, and 4 be exhaust cigarette
Chimney, 5 be distributor pipe spray orifice, and 6 be insulating layer, and 7 be metal chuck, and 8 be interior tank skin, and 9 be outer tank skin, and based on 10,11 be storage tank
Tank skin.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1：As shown in Figure 1, a kind of large-scale storage tank barrel preheating structure, the storage tank is single wall tank and installation foundation
On 10, after storage tank thermal insulation is constructed, setting metal chuck 7, the metal chuck in 6 periphery of insulating layer of storage tank shell 11
Diameter set as needed, the metal chuck 7 and storage tank shell 11 collectively form the storage tank barrel of double-layer structure, institute
The upper and lower end face for stating metal chuck 7 is flushed with the upper and lower end face of storage tank shell 11 respectively, and bottom and top are all closed, the gold
Belong to and form a narrow flue-gas flow annular space 1 between chuck 7 and storage tank shell 11, chuck diameter is according to the outer diameter tune of storage tank
It is whole, it is ensured that the flue gas flow velocity in the flue-gas flow annular space 1 is 0.1~2m/s, the bottom in the flue-gas flow annular space 1
Portion is provided with annular gas distributor pipe 2, and several opening up distributor pipe spray orifices are provided on the annular gas distributor pipe 2
5, the bottom of the metal chuck 7 is provided with flue gas import 3, the flue gas import 3 connects with annular gas distributor pipe 2
It is logical, the exhaust chimney 4 being connected to flue-gas flow annular space 1 is provided at the top of the metal chuck 7.
Flue gas enters flue-gas flow annular space after the distribution of annular gas distributor pipe, and is arranged from the exhaust chimney at top
Go out, flue gas, directly with thermal insulation material contact heat-exchanging, evaporates in flow process and takes away the combination water in thermal insulation material, then
It is emitted into air from the exhaust chimney at top, has the function that strengthen barrel preheating, it is ensured that preheating is along the circumferential direction uniform, conducts heat
It is efficient, preheating time is short, low energy consumption.
After the completion of preheating, during storage tank fills fused salt, since salt dissolving amount is usually very big, salt dissolving takes 1~2
Month, in filling process, small flow flue-gas flow is kept in chuck, compensates heat loss, and fused salt in filling process is avoided to occur
Local solidification phenomenon；And the flue gas in flue-gas flow annular space is also used as the anti-condensation measure of concurrent heating during normal production and continues
It uses.Since space is smaller in annular space, it is the purpose that can reach to storage tank barrel concurrent heating to keep smaller flue-gas flow rate.
Embodiment 2：As shown in Fig. 2, the storage tank is double-walled envelope tank, the interior tank skin 8 and outer tank of the double-walled envelope tank
Wall 9 collectively forms the storage tank barrel of double-layer structure, and the interior tank skin 8 and 9 upper and lower side of outer tank skin are flushed and be all closed, described outer
The inside of tank skin 9 is provided with insulating layer 6, and flue-gas flow annular space 1, the flue are formed between the interior tank skin 8 and outer tank skin 9
Gas import 3 and exhaust chimney 4 are separately positioned on the bottom and top of outer tank skin 9.Other structures are substantially the same manner as Example 1.
In the present embodiment, using the space of self-assembling formation between the double-walled of double-walled envelope tank as flue gas stream rotating ring
Gap, flue gas enter annular space from bottom after distributor pipe is distributed, and side exchanges heat with interior tank skin in flow process, in side and outer tank
Thermal insulation material heat exchange, then from top vent smoke stack emission to air, while reaching tank skin and baking and thermal insulation in uniformly preheating
The effect of material.
The utility model utilizes the double-layer structure of storage tank barrel, so that the flow velocity of flue gas is improved decades of times, passes through reinforcement
Gas turbulence, augmentation of heat transfer, quickly the combination water in heating, evaporation thermal insulation material, realizes rapidly pre-warming storage tank barrel, effectively solves
Existing fused salt storage tank determined in warm, barrel preheats the problem of uneven, the time is long, high energy consumption.In addition, this technology is not
The design and construction for influencing storage tank ontology, are installed, and can coordinate with bottom plate electrical heating preheating technology using external, are passed through
Flue-gas flow rate is increased or decreased, reaches the process goal of barrel heating synchronous with bottom plate, and after the completion of preheating, Ke Yiji
It is continuous to be used as anti-condensation concurrent heating measure, substitute traditional electrical immersion heater.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (7)
1. a kind of large-scale storage tank barrel preheating structure, the storage tank barrel is double-layer structure, it is characterised in that：The storage tank barrel
Double-layer structure upper and lower side closing, and between double-layer structure formed flue-gas flow annular space（1）, in the flue-gas flow annular space
（1）Interior bottom is provided with annular gas distributor pipe（2）, the double-layer structure bottom of the storage tank barrel is provided with flue gas import
（3）, the flue gas import（3）With annular gas distributor pipe（2）Connection, is arranged at the top of the double-layer structure of the storage tank barrel
Have and flue-gas flow annular space（1）The exhaust chimney of connection（4）.
2. large-scale storage tank barrel preheating structure according to claim 1, it is characterised in that：In the annular gas distributor pipe
（2）On be provided with several opening up distributor pipe spray orifices（5）.
3. large-scale storage tank barrel preheating structure according to claim 1, it is characterised in that：The flue-gas flow annular space
（1）Interior flue gas flow velocity is 0.1~2m/s.
4. large-scale storage tank barrel preheating structure according to claim 1,2 or 3, it is characterised in that：The storage tank is single wall
Tank, in storage tank shell（11）Insulating layer（6）Periphery is provided with metal chuck（7）, the metal chuck（7）With storage tank shell
（11）Collectively form the storage tank barrel of double-layer structure, the metal chuck（7）With storage tank shell（11）Between form flue gas stream
Rotating ring gap（1）, the flue gas import（3）And exhaust chimney（4）It is separately positioned on metal chuck（7）Bottom and top.
5. large-scale storage tank barrel preheating structure according to claim 4, it is characterised in that：The metal chuck（7）It is upper
Lower face respectively with storage tank shell（11）Upper and lower end face flush, and bottom and top are all closed.
6. large-scale storage tank barrel preheating structure according to claim 1,2 or 3, it is characterised in that：The storage tank is double-walled
Jacket canister, the interior tank skin of the double-walled envelope tank（8）And outer tank skin（9）The storage tank barrel of double-layer structure is collectively formed, it is described interior
Tank skin（8）And outer tank skin（9）Between formed flue-gas flow annular space（1）, the flue gas import（3）And exhaust chimney（4）Point
It is not arranged in outer tank skin（9）Bottom and top.
7. large-scale storage tank barrel preheating structure according to claim 6, it is characterised in that：The interior tank skin（8）And outer tank
Wall（9）Upper and lower side is flushed and is all closed, in the outer tank skin（9）Inside be provided with insulating layer（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721804443.1U CN207730068U (en) | 2017-12-21 | 2017-12-21 | A kind of large-scale storage tank barrel preheating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721804443.1U CN207730068U (en) | 2017-12-21 | 2017-12-21 | A kind of large-scale storage tank barrel preheating structure |
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| Publication Number | Publication Date |
|---|---|
| CN207730068U true CN207730068U (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721804443.1U Active CN207730068U (en) | 2017-12-21 | 2017-12-21 | A kind of large-scale storage tank barrel preheating structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966058A (en) * | 2017-12-21 | 2018-04-27 | 中国成达工程有限公司 | A kind of large-scale storage tank barrel preheating structure |
| CN109916761A (en) * | 2019-02-21 | 2019-06-21 | 中国石油大学(华东) | It is a kind of for measuring the device and method of cryogenic liquid evaporation rate |
-
2017
- 2017-12-21 CN CN201721804443.1U patent/CN207730068U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966058A (en) * | 2017-12-21 | 2018-04-27 | 中国成达工程有限公司 | A kind of large-scale storage tank barrel preheating structure |
| CN109916761A (en) * | 2019-02-21 | 2019-06-21 | 中国石油大学(华东) | It is a kind of for measuring the device and method of cryogenic liquid evaporation rate |
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