CN208671410U - A kind of tower fused salt heat dump compressed air system - Google Patents
A kind of tower fused salt heat dump compressed air system Download PDFInfo
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- CN208671410U CN208671410U CN201821125718.3U CN201821125718U CN208671410U CN 208671410 U CN208671410 U CN 208671410U CN 201821125718 U CN201821125718 U CN 201821125718U CN 208671410 U CN208671410 U CN 208671410U
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- compressed air
- fused salt
- accident
- instrument
- heat dump
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a kind of tower fused salt heat dump compressed air systems, the compressed air system includes accident compressed air sub-system and compressed air for instrument subsystem, the outlet side of the accident compressed air sub-system is connected with the import fused salt surge tank that fused salt heat dump front end is arranged in, the outlet side of the compressed air for instrument subsystem is connected with the operated pneumatic valve of fused salt heat dump, wherein, the inlet end of compressed air for instrument subsystem is connected with the accident compressed air reservoir in accident compressed air sub-system.The utility model is by being optimized design with compressed air system to heat dump, accident compressed air system is integrated with air compressor, the conveying distance of instrument gas source is shortened while meeting necessary accident compressed air demand, improve the stability of gas source supply, power station air compression system pressure rating requirement is reduced, to save initial outlay cost.
Description
Technical field
The utility model relates to the technical fields of solar light-heat power-generation, more particularly, are related to a kind of tower fused salt suction
Hot device compressed air system.
Background technique
For tower photo-thermal power station, low-temperature molten salt, which is sent under the action of pump for liquid salts along tedge, to be located at the top of high tower
Fused salt heat dump in, in order to guarantee that fused salt heat dump remains to maintain temporary safe operation under burst or accident conditions, lead to
The normal practice is that the front end of fused salt heat dump is provided with import fused salt surge tank, after preventing pump for liquid salts from failing for some reason
Destroying occurs stopping and overtemperature occurring under the radiation of high hot-fluid in fused salt heat absorption tube panel.It is empty that import fused salt surge tank is connected with compression
Gas system and operation with pressure, after pump for liquid salts is stopped transport for some reason, the fused salt in import fused salt surge tank can be in the dynamic of compressed air
Power effect is lower to be continued to flow in tube panel, to complete to remove coke to mirror field heliostat within this time.
For being commercialized for tower photo-thermal power station, because fused salt heat dump running resistance considers, the compressed air system is real
Pressure rating needed for border is higher, can not share with power station routine instrument air compression system.In addition, when heliostat completion in mirror field is removed
It is defocused need to be by fused salt fast evacuation inside fused salt heat dump, therefore, in order to shorten the salt discharge time as far as possible, fused salt heat dump is related
Valve may need to use operated pneumatic valve.The instrument that gas source needed for operated pneumatic valve mostlys come from power station ground is compressed with air is
System, pressure rating maintains 0.6~0.8MPa, in order to guarantee the stability of gas source, needs individually to set near fused salt heat dump
Set vacuum tank.But since fused salt heat dump is located at the top of high tower, required instrument gas source pipe can be very long, and the risk died can increase
In addition height considers the friction loss of long pipeline conveying, need the whole pressure etc. for improving power station instrument air compression system
Grade, therefore corresponding cost of investment can also increase therewith.
For with the above problem, the unstability of one side system operation is higher, on the other hand can also correspondingly improve electricity
The operation cost of investment stood.
Summary of the invention
In order to solve the problems in the existing technology, the purpose of the utility model is to provide a kind of tower fused salt heat dumps
The stability of system operation is improved simultaneously by the optimization design to heat dump compressed air system with compressed air system
Reduce the operation cost of investment in power station.
It includes accident compressed air sub-system and compressed air for instrument that the utility model, which provides a kind of compressed air system,
Subsystem, the outlet side of the accident compressed air sub-system and the import fused salt surge tank phase that fused salt heat dump front end is set
Even, the outlet side of the compressed air for instrument subsystem is connected with the operated pneumatic valve of fused salt heat dump, wherein compressed air for instrument
The inlet end of subsystem is connected with the accident compressed air reservoir in accident compressed air sub-system.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, accident compression
System includes air compressor machine, accident compression admission line, accident compressed air reservoir and accident compression outlet pipe, the air compressor machine
It compresses admission line by accident to be connected with accident compressed air reservoir, the accident compressed air reservoir is compressed out by accident
Feed channel is connected with the import fused salt surge tank, wherein the accident compressed air reservoir is arranged in import fused salt surge tank
Near fused salt heat absorption tube panel.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the accident compress into
Drying machine, filter and compressed air shut-off valve, the thing are disposed with along compressed air flowing direction in feed channel
Therefore along compressed air flowing direction is disposed with compressed air check-valves, compressed air turns off on compression outlet pipe
Valve and compressed air pressure-regulating valve.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the accident compression is empty
The operating pressure of gas storage tank is higher than the operating pressure of import fused salt surge tank, is provided with pressure-regulating valve between the two.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the instrument is empty with compression
Gas subsystem includes compressed air for instrument inlet pipeline, compressed air for instrument storage tank and compressed air for instrument outlet conduit, described
Compressed air for instrument storage tank is connected with accident compressed air reservoir by compressed air for instrument inlet pipeline and is pressed by instrument
Contracting air outlet duct is connected with the operated pneumatic valve of fused salt heat dump, wherein the compressed air for instrument storage tank is arranged in import
Near fused salt surge tank and fused salt heat absorption tube panel.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the instrument is empty with compression
On gas inlet pipe road along compressed air flowing direction be disposed with compressed air check-valves, compressed air shut-off valve,
Compressed air pressure-regulating valve and superfinishing filter.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the fused salt heat dump
Operated pneumatic valve include the exhaust valve at top and the thin salt valve of bottom, the gas source of the operated pneumatic valve compresses from instrument with air
Storage tank.
According to one embodiment of the tower fused salt heat dump compressed air system of the utility model, the instrument is empty with compression
The operating pressure of gas storage tank is higher than the operating pressure of operated pneumatic valve, is provided with pressure-regulating valve between the two.
Compared with prior art, the tower fused salt heat dump of the utility model is with compressed air system by using heat dump
Design is optimized in compressed air system, and accident compressed air system is integrated with air compressor, full
The conveying distance that instrument gas source is shortened while foot necessary accident compressed air demand, improves the stabilization of gas source supply
Property, power station air compression system pressure rating requirement is reduced, to save initial outlay cost.
Detailed description of the invention
Fig. 1 shows the structure according to the tower fused salt heat dump compressed air system of the utility model exemplary embodiment
Schematic diagram.
Description of symbols:
1- air compressor machine, 2- drying machine, 3- filter, 4- compressed air shut-off valve, 5- accident compressed air reservoir, 6- pressure
Contracting air check-valves, 7- compressed air pressure-regulating valve, 8- superfinishing filter, 9- compressed air for instrument storage tank, 10- import
Fused salt surge tank, 11- pressure maintaining valve, 12- fused salt tedge shut-off valve, 13- fused salt circuit flowmeter, 14- fused salt loop modulation valve,
15- dredges salt valve, 16- bypass shut-off valve, 17- heat dump exhaust valve, 18- fused salt heat absorption tube panel, 19- fused salt tedge, 20- fused salt
Shunt valve, 21- fused salt circuit connecting tube, 22- dredge salt branch pipe, 23- exhaust pipe, 24- accident compression outlet pipe, 25- instrument pressure
Contracting air inlet duct, 26- compressed air for instrument outlet conduit, 27- accident compress admission line.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
The utility model combines the service requirement and feature of tower photo-thermal power station fused salt heat dump air compression system, right
Conventional system is optimized and improves, and is suitable for tower photo-thermal power station fused salt endothermic system.
Fig. 1 shows the structure according to the tower fused salt heat dump compressed air system of the utility model exemplary embodiment
Schematic diagram.
As shown in Figure 1, the tower fused salt heat dump compressed air system includes accident compressed air sub-system and instrument
Use compressed air sub-system.The import fused salt surge tank cooperating of accident compressed air sub-system and fused salt heat dump front end,
After pump for liquid salts is stopped transport for some reason, the fused salt in fused salt surge tank can be in the compressed air that accident compressed air sub-system provides
Power effect is lower to be continued to flow in heat dump tube panel, to complete to remove coke to mirror field heliostat within this time.Instrument compression
Air subsystem then provides driving power for the operated pneumatic valve of fused salt heat dump, realizes that heliostat completion in mirror field is removed defocused fused salt and inhaled
The quick fused salt of hot device empties.
Exemplary embodiment according to the present utility model, the outlet side of accident compressed air sub-system and setting are inhaled in fused salt
The import fused salt surge tank 10 of hot device front end is connected, the outlet side of compressed air for instrument subsystem and the pneumatic operated valve of fused salt heat dump
Door is connected, wherein the inlet end of compressed air for instrument subsystem and the accident compressed air in accident compressed air sub-system are stored up
Tank 5 is connected.
It is adjusted as a result, by the instrument to the fused salt heat dump at the top of high tower with air gas source source, so that instrument is empty
Gas gas source is no longer taken from tower bottom compared with the instrument air compression station being remotely locatable, but is directly taken from the thing near fused salt heat dump
Therefore the accident compressed air reservoir of compressed air sub-system, not only conveying distance is short, risk of dying is small and gas source stability more has
It ensures, and can quickly provide the compressed air for instrument for meeting its pressure rating when operated pneumatic valve movement, while power station is empty
Air pressure compression system improves pressure rating without whole because of high parameter requirement of the fused salt heat dump operated pneumatic valve to gas source, is conducive to
Save the cost of investment in power station.
Specifically, fused salt heat dump is arranged in high tower napex, and the front end of fused salt heat dump is provided with vertical import fused salt
Surge tank 10, main function is storage fused salt to be occurred stopping and dry combustion method with the tube panel that absorbs heat of fused salt after preventing pump for liquid salts from fail for some reason
Damage, tank internal volume can accommodate fused salt heat dump with flow rate of molten salt required for rated load operation certain time.
Import fused salt surge tank 10 is connected by fused salt tedge 19 with pump for liquid salts (not shown), is set on fused salt tedge 19
It is equipped with fused salt tedge shut-off valve 12, it is slow to enter import fused salt by pump for liquid salts and the control fused salt of fused salt tedge shut-off valve 12
It rushes in tank 10 and stores for future use.Pressure maintaining valve 11 is additionally provided on import fused salt surge tank 10 and is also connected with fused salt shunt valve 20,
Bypass shut-off valve 16 is provided on fused salt shunt valve 20.
Import fused salt surge tank 10 is connected by fused salt circuit connecting tube 21 with fused salt heat absorption tube panel 18, the connection of fused salt circuit
It is disposed with fused salt circuit flowmeter 13 and fused salt loop modulation valve 14 along fused salt flow direction on pipe 21, is realized to fused salt
The control of flowing and flow.Also, import fused salt surge tank 10 is connected with accident compressed air sub-system, the accident compressed air
Power when subsystem is used to maintain the constant-pressure operation of import fused salt surge tank 10 and provides accident conditions.
According to the utility model, accident compressed air sub-system includes air compressor machine 1, accident compression admission line 27, accident
Compressed air reservoir 5 and accident compress outlet pipe 24, and air compressor machine 1 compresses admission line 27 and accident compressed air by accident
Storage tank 5 is connected, and accident compressed air reservoir 5 compresses outlet pipe 24 by accident and is connected with import fused salt surge tank 10, wherein
Accident compressed air reservoir 5 is arranged near import fused salt surge tank 10 and fused salt heat absorption tube panel 18.Accident compresses admission line
Drying machine 2, filter 3 and compressed air shut-off valve 4, accident compression are disposed with along compressed air flowing direction on 27
Compressed air check-valves 6, compressed air shut-off valve 4 are disposed with along compressed air flowing direction on outlet pipe 24
With compressed air pressure-regulating valve 7.Air compressor machine 1 preferably selects oilless air compressor.
Since the headspace of high tower is limited, air compressor machine, drying machine and filter in accident compressed air sub-system etc.
Equipment is arranged in tower bottom, and accident compressed air reservoir 5 is then arranged near import fused salt surge tank and fused salt heat dump, just
To the quick demand of compressed air when accident conditions.Also, the operating pressure of accident compressed air reservoir 5 is higher than import fused salt
The operating pressure of surge tank 10, its purpose is to reduce the volume of accident compressed air reservoir 5 in order to tower top arrangement, this two
Tank body compresses the connection of outlet pipe 24 and the pressure adjusting group by being arranged on accident compression outlet pipe 24 by accident
Part realizes compressed air by the conversion of high pressure to low pressure.
The compressed air that air compressor machine 1 generates as a result, is by accident compression admission line 27 and after drying, filtration treatment
It is filled in accident compressed air reservoir 5 and stores, be then stored in compressed air in accident compressed air reservoir 5 and compressed by accident
Outlet pipe 24 simultaneously enters in import fused salt surge tank 10 after the conversion of high pressure to low pressure, meets the requirement of its operating pressure.
According to the utility model, compressed air for instrument subsystem includes compressed air for instrument inlet pipeline 25, instrument compression
Air reservoir 9 and compressed air for instrument outlet conduit 26, compressed air for instrument storage tank 9 pass through compressed air for instrument inlet pipeline 25
It is connected and passes through the operated pneumatic valve phase of compressed air for instrument outlet conduit 26 and fused salt heat dump with accident compressed air reservoir 5
Even, wherein compressed air for instrument storage tank 9 is arranged near import fused salt surge tank 10 and fused salt heat absorption tube panel 18.Preferably, it melts
The operated pneumatic valve of salt heat dump includes exhaust valve 17 and thin salt valve 15, wherein exhaust valve 17 is arranged at the top of fused salt heat dump
On exhaust pipe 23, dredges salt valve 15 and be arranged on the thin salt branch pipe 22 of fused salt heat dump bottom.
After fused salt heat dump normally stops transport or stops transport for some reason, need to carry out it fast evacuation processing, therefore fused salt is inhaled
The thin salt valve 15 of exhaust valve 17 and bottom at the top of hot device is all made of pneumatic executive mode, it is therefore an objective to when shortening the unlatching of valve
Between, reduce the risk that frozen plug occurs for fused salt in evacuation procedure.
In order to guarantee the stability of instrument gas source and quick demand property needed for operated pneumatic valve, exhaust valve 17 and thin salt valve 15
For gas source from the compressed air for instrument storage tank 9 arranged nearby, operating pressure maintains 0.6~0.8MPa.It is practical new according to this
Type, compressed air for instrument subsystem does not use individual air compressor machine, but passes through compressed air for instrument inlet pipeline 25 and thing
Therefore compressed air reservoir 5 is connected.Wherein, it is set gradually on compressed air for instrument inlet pipeline 25 along compressed air flowing direction
There are compressed air check-valves 6, compressed air shut-off valve 4, compressed air pressure-regulating valve 7 and superfinishing filter 8, a side
Face carries out the control of starting valve by being stored in after the decompression processing to compressed air in compressed air for instrument storage tank 9,
The setting of the processing equipments such as another aspect superfinishing filter can also make compressed air meet the high-quality gas source demand of operated pneumatic valve.
For fused salt heat dump, exhaust valve 17 and thin salt valve 15 are in closed state when normal operation, only open
It can just be opened when dynamic initial stage, stoppage in transit emptying and burst accident, therefore demand number of the operated pneumatic valve daily to gas source is limited
, and it is every time very of short duration, it means that the gas pressure and tolerance inside compressed air for instrument storage tank 9 are in the overwhelming majority
All be in time it is highly stable, need not move through accident compressed air reservoir 5 to its continual pressurising, it is normally opened when not used
It opens air compressor machine to be inflated storage tank, reduces the accident rate of system and equipment, and saved operating cost.
Initial start stage closes fused salt loop modulation valve 14, is filled by fused salt tedge 19 to import fused salt surge tank 10
Salt, the compressed air that when setting liquid level to be achieved opens in accident compressed air sub-system on accident compressed air outlet pipe 24 are used
Shut-off valve 4 carries out pressurising to it, when the operating pressure of tank interior and arrival end fill salt pressure it is identical when reach balance, liquid level
It will not change again.The heat absorption tube panel 18 of fused salt heat dump is connected by circuit connecting tube with import fused salt surge tank 10, when into
When the level stability of mouthful fused salt surge tank, that is, openable circuit connecting tube on fused salt loop modulation valve 14, fused salt will press at this time
Start heat absorption circulation in the lower heat absorption tube panel 18 for entering fused salt heat dump of power effect.
When the load of fused salt heat dump changes, fused salt stream is adjusted by fused salt loop modulation valve 14 and pump for liquid salts
Measure the stabilization to guarantee fused salt outlet temperature.Fused salt liquid level and operating pressure in import fused salt surge tank 10 can be returned with fused salt
There is momentary fluctuation in the movement of road regulating valve 14 and pump for liquid salts, and when load rises, tank interior liquid level and operating pressure are instantaneous
Decline；When load decline, then on the contrary；But as long as fused salt liquid level maintains between the highest liquid level of permission and minimum liquid level, then without
It needs the unlatching air compressor machine of discontinuity to be inflated to import fused salt surge tank and top vent, reduces equipment failure rate and save
Operating cost.
When pump for liquid salts fails for some reason to provide fused salt to heat absorption tube panel, 10 internal reservoir of import fused salt surge tank melts
Salt will extrude under the effect of the power of compressed air, be sent into the heat absorption relaying afterflow of tube panel 18 via circuit connecting tube 21 and move, with
Guarantee that mirror field heliostat removes the safety of heat dump during coke.
After the completion of heliostat removes coke, exhaust valve 17 and thin salt valve 15 need to be opened and start the bypass on fused salt shunt valve 20
Shut-off valve 16 carries out fast evacuation to fused salt heat dump, wherein exhaust valve 17 and thin salt valve 15 select pneumatic operated valve, gas source from
Compressed air for instrument storage tank 9.
When the restarting of fused salt heat absorber system, air compressor machine 1 should be opened in advance, accident compressed air reservoir 5 and instrument are used
Compressed air reservoir 9 carries out suppressing inflation.
In conclusion the tower fused salt heat dump of the utility model is arranged in heat dump with accident compressed air system nearby
Near, convenient for the quick demand of compressed air, instrument needed for another fused salt heat dump is directly derived from nearest cloth with gas source when accident
The accident compressed air sub-system set, reduce long range gas transmission die risk and ensure gas source stability, without because
Operated pneumatic valve requires the high parameter of gas source in fused salt heat dump and entirety improves the pressure rating of power station air compression system, to save
The about cost of investment in power station.
The utility model is not limited to specific embodiment above-mentioned.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
It closes.
Claims (8)
1. a kind of tower fused salt heat dump compressed air system, which is characterized in that the compressed air system includes accident pressure
Contracting air subsystem and compressed air for instrument subsystem, the outlet side of the accident compressed air sub-system and setting are inhaled in fused salt
The import fused salt surge tank of hot device front end is connected, and the outlet side of the compressed air for instrument subsystem is pneumatic with fused salt heat dump
Valve is connected, wherein the inlet end of compressed air for instrument subsystem and the accident compressed air in accident compressed air sub-system
Storage tank is connected.
2. tower fused salt heat dump compressed air system according to claim 1, which is characterized in that the accident compression
Subsystem includes air compressor machine, accident compression admission line, accident compressed air reservoir and accident compression outlet pipe, the pneumatics
Machine compresses admission line by accident and is connected with accident compressed air reservoir, and the accident compressed air reservoir is compressed by accident
Outlet pipe is connected with the import fused salt surge tank, wherein the accident compressed air reservoir is arranged in import fused salt buffering
Near tank and fused salt heat absorption tube panel.
3. tower fused salt heat dump compressed air system according to claim 2, which is characterized in that the accident compression
It is disposed with drying machine, filter and compressed air shut-off valve along compressed air flowing direction on admission line, it is described
Along compressed air flowing direction is disposed with compressed air check-valves, compressed air is closed on accident compression outlet pipe
Disconnected valve and compressed air pressure-regulating valve.
4. tower fused salt heat dump compressed air system according to claim 2, which is characterized in that the accident compression
The operating pressure of air reservoir is higher than the operating pressure of import fused salt surge tank, is provided with pressure-regulating valve between the two.
5. tower fused salt heat dump compressed air system according to claim 1, which is characterized in that the instrument compression
Air subsystem includes compressed air for instrument inlet pipeline, compressed air for instrument storage tank and compressed air for instrument outlet conduit, institute
Compressed air for instrument storage tank is stated to be connected by compressed air for instrument inlet pipeline with accident compressed air reservoir and use by instrument
Compressed air outlet pipeline is connected with the operated pneumatic valve of fused salt heat dump, wherein the compressed air for instrument storage tank be arranged in into
Near mouth fused salt surge tank and fused salt heat absorption tube panel.
6. tower fused salt heat dump compressed air system according to claim 5, which is characterized in that the instrument compression
Along compressed air flowing direction is disposed with compressed air check-valves, compressed air turns off on air inlet duct
Valve, compressed air pressure-regulating valve and superfinishing filter.
7. tower fused salt heat dump compressed air system according to claim 5, which is characterized in that the fused salt heat absorption
The operated pneumatic valve of device includes the exhaust valve at top and the thin salt valve of bottom, and the gas source of the operated pneumatic valve is from instrument air pressure
Contracting storage tank.
8. tower fused salt heat dump compressed air system according to claim 5, which is characterized in that the instrument compression
The operating pressure of air reservoir is higher than the operating pressure of operated pneumatic valve, is provided with pressure-regulating valve between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125718.3U CN208671410U (en) | 2018-07-16 | 2018-07-16 | A kind of tower fused salt heat dump compressed air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125718.3U CN208671410U (en) | 2018-07-16 | 2018-07-16 | A kind of tower fused salt heat dump compressed air system |
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| Publication Number | Publication Date |
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| CN208671410U true CN208671410U (en) | 2019-03-29 |
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ID=65828745
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| CN201821125718.3U Active CN208671410U (en) | 2018-07-16 | 2018-07-16 | A kind of tower fused salt heat dump compressed air system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870787A (en) * | 2018-07-16 | 2018-11-23 | 东方电气集团东方锅炉股份有限公司 | A kind of tower fused salt heat dump compressed air system |
-
2018
- 2018-07-16 CN CN201821125718.3U patent/CN208671410U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870787A (en) * | 2018-07-16 | 2018-11-23 | 东方电气集团东方锅炉股份有限公司 | A kind of tower fused salt heat dump compressed air system |
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