CN110345789A - A kind of corrugated plating fused salt storage heating system and its working method - Google Patents
A kind of corrugated plating fused salt storage heating system and its working method Download PDFInfo
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- CN110345789A CN110345789A CN201910538274.9A CN201910538274A CN110345789A CN 110345789 A CN110345789 A CN 110345789A CN 201910538274 A CN201910538274 A CN 201910538274A CN 110345789 A CN110345789 A CN 110345789A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
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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
Abstract
The invention discloses a kind of corrugated plating fused salt storage heating system and its working methods, including heat-conducting oil heating and hold over system, heating system, central processing unit and the internal fused salt heat-storing device for filling fuse salt；Central processing unit is connect with heating system and heat-conducting oil heating and hold over system respectively, multiple fused salt heat-storing devices are arranged in the heat storage can of heat-conducting oil heating and hold over system, heating system is used to carry out the heat-storage medium in heat storage can stability contorting and output that outlet condition is realized in heat exchange, and central processing unit is for realizing automatic control.The present invention using trough-electricity, fused salt heat and accumulation of heat, peak value heat release heat accumulating type system technology, complete electric power on peak load shifting, greatly reduce system equipment amount, run it is more preferably stable, it can be achieved that automation control.
Description
Technical field
The invention belongs to heating system technical fields, and in particular to a kind of corrugated plating fused salt storage heating system and its work
Method.
Background technique
With the development of national economy, the continuous improvement of living standards of the people, China's energy requirement structure has occurred larger
Variation.On the one hand the problems such as it is insufficient that there is peak powers, on the other hand more excessive there is peak-valley difference, these contradictory appearance
The development of national economy is constrained again.High-temperature heat-storage technology by heat accumulating is realized the storage of thermal energy, is discharged simultaneously, can also be with
Effective solution energy requirement and the unmatched phenomenon of supply.But the technology still has some technical problems, constrains it
Development, summing up mainly has the following:
(1) complexity of heat-conducting oil heating system, in the case where meeting design requirement, equipment usage amount is more.
Heat-conducting oil system process is that first conduction oil is stored in head tank, is then sent conduction oil to electricity with circulating pump
After being heated to required temperature in heater (or hot oil furnace), it is supplied to each heating equipment, then through gs-oil separator, is excluded
After gas in conduction oil, finally returns again in electric heater and heat, recycle down.Its equipment is various, mainly there is oiling
Pump, cryostat, head tank (expansion slot), gs-oil separator, circulating pump, electric heater (hot oil furnace), heat user equipment etc..
(2) complexity of heat-conducting oil heating system, in the case where meeting design requirement, it is difficult to realize and automatically control.
Since the equipment of heat-conducting oil heating system is various, and the failure of Unpredictability occurred in the process of running,
Therefore in terms of the automatic control of equipment, there is very big difficulty.
(3) triviality of traditional Molten salt heating system, in the case where meeting design requirement, equipment usage amount is more.
Molten salt heating system is to be used as heat carrier to carry out between molten salt furnace and heating equipment after high-temperature heating fused salt
The heat transfer systems of heat cycles are mainly made of molten salt furnace, molten salt circulating pump, fused salt tank and some pipe line parts etc..
(4) traditional Molten salt heating system start-up course is complicated
(5) in traditional Molten salt heating system, fused salt cannot solidify again, otherwise will disappear after melting for the first time
Amount of heat is consumed, fused salt is melted again, causes heat waste.
(6) automatic controlling level of traditional Molten salt heating system is low.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that it is molten to provide a kind of corrugated plating
Salt storage heating system and its working method are developed by being effectively combined the existing energy source configuration problem in China using low
Paddy electricity, fused salt heat and accumulation of heat, peak value heat release heat accumulating type system technology, complete electric power on peak load shifting.
The invention adopts the following technical scheme:
A kind of corrugated plating fused salt storage heating system, including heat-conducting oil heating and hold over system, heating system, central processing
Device and fused salt heat-storing device；Central processing unit is connect with heating system and heat-conducting oil heating and hold over system respectively, fused salt heat accumulation
Device is corrugated board structures, and fused salt heat-storing device is arranged in the heat storage can of heat-conducting oil heating and hold over system, and heating system is used
In to the heat-storage medium in heat storage can carry out heat exchange realize outlet condition stability contorting and output, central processing unit for realizing
It automatically controls.
Specifically, fused salt heat-storing device includes multiple groups, every group is formed by welding by two pieces of corrugated platings, inside filling fuse salt.
Specifically, heat-conducting oil heating and hold over system include filling pump, surge tank and nitrogen, filling pump and heat storage can connect
It connects, the exhaust line at the top of heat storage can divides two-way, connects nitrogen all the way, and another way is connect through surge tank with filling pump.
Further, fused salt heat-storing device setting is provided with liquid level automatic detection device, liquid in conduction oil, in surge tank
Position automatic detection device is connect with central processing unit, and when the conduction oil in surge tank reaches setting value, liquid level detects dress automatically
It sets and transmission signal is fed back into central processing unit, the conduction oil in surge tank is injected heat storage can by filling pump.
Specifically, heating system includes feed pump and heat exchanger, the input end of feed pump and heat exchanger is connected, and heat exchanger is set
It sets in heat storage can, positioned at the top of fused salt heat-storing device.
Further, the middle and upper part of heat storage can is arranged in heat exchanger, and the middle and lower part of heat storage can is arranged in fused salt heat-storing device.
Further, temperature monitoring is arranged in the exit of heat exchanger, and temperature monitoring is used for heat exchanger exit water temperature
Degree feeds back to central processing unit, and the convection current that central processing unit changes conduction oil and convection bank by adjusting the revolving speed of blender is changed
Hot coefficient.
Further, heating system further includes feed water by-pass, and feed water by-pass is used to supplement the outlet heat of cold water and heat exchanger
Water is mixed.
Specifically, the axis in heat storage can along heat storage can is equipped with blender, the bottom of heat storage can is provided with electric heater,
Electric heater is connect by temperature-detecting device with central processing unit.
Another technical solution of the invention is a kind of working method of corrugated plating fused salt storage heating system, specifically:
Before start-up operation, nitrogen is full of in heat storage can, conduction oil is delivered in heat storage can by filling pump, and heat storage can is discharged
Original nitrogen, nitrogen enter surge tank by exhaust pipe, are discharged into atmosphere by surge tank；
When conduction oil begins to warm up accumulation of heat, the temperature value of electric heater is fed back to central processing by temperature-detecting device
Device, central processing unit adjust agitator speed, make in the high temperature heat conductive oil and heat storage can around electric heater low temperature conduction oil into
Row is sufficiently mixed heat exchange；
In conduction oil starting temperature-rise period, the water vapour and low boiling point volatile matter of generation are discharged into buffering by exhaust pipe
Tank, then gas is discharged to outside heating system by the evacuated tube of surge tank；
Oil vapour enters surge tank by exhaust pipe and condenses；When the conduction oil in surge tank is accumulated to setting value, buffering
Leve monitor on tank by liquid level numeric feedback to central processing unit, start to work, conduction oil in surge tank infused by filling pump
Enter in heat storage can；
In heat storage can when conduction oil exothermic process, heat exchanger exit is equipped with exit water temperature degree monitor, while giving water system
It is furnished with bypass conduit in system, the coolant-temperature gage of heat exchanger exit is fed back to central processing unit, control main road and side by temperature monitoring
The regulating valve on road is mixed with heat exchanger exit hot water by bypass supplement cold water, controls mixed temperature；
Heat exchanger exit coolant-temperature gage is fed back to central processing unit, centre by heat storage can heat release middle and later periods, temperature monitoring
The revolving speed that device adjusts blender is managed, changes the convection transfer rate of conduction oil and convection bank, strengthens convective heat transfer, strengthen simultaneously
It exchanges heat between fused salt and conduction oil, so that conduction oil is in set temperature, realizes that exit water temperature degree stablizes the model required in user
In enclosing.
Compared with prior art, the present invention at least has the advantages that
In a kind of low ebb electric-heating heat-conductive oil of the present invention and the heating system of the common accumulation of heat of fused salt, heat-conducting oil heating and accumulation of heat
System avoids the complexity of conventional thermal conductive heating system for oil, and equipment usage amount is reduced in the case where meeting design requirement, and corrugated plating is molten
The drawbacks of salt regenerative apparatus has fully considered Molten salt heating system can effectively be sent out using a kind of novel molten salt heat accumulation mode
Wave fused salt latent heat.By auto-adjustment control blender in heating system, reaches and stablize external quantity of heat given up.
Further, heat accumulation fuse salt is filled in corrugated plating fused salt regenerative apparatus.During fused salt heat accumulation, due to molten
Salt temperature increases, volume expansion, will not be because of fused salt because there are expansion spaces for the corrugated plating fused salt regenerative apparatus of carrying fused salt
It expands and is split up corrugated plating, and will not influence conduction oil after expanding and flowed between corrugated plating fused salt regenerative apparatus hold over system
Dynamic, heat transfer efficiency will not reduce.During fused salt is exothermic, the corrugated plating fused salt regenerative apparatus of fused salt is carried because temperature reduces
And shrink, shrinkage is also in heat-storing device control range.Therefore no matter fused salt is heat release or heat accumulation, is all wrapped in corrugated plating
In, and corrugated plating will not be damaged.
Further, two-way air pipe lines are equipped at the top of heat storage can in heat-conducting oil heating and hold over system.Nitrogen is connect all the way
Gas, another way are connect through surge tank with filling pump；Nitrogen is full of before starting to work or when maintenance down in heat storage can, avoids holding
By the direct catalytic oxidation of air inside device；Heat storage can original nitrogen is discharged when oiling, nitrogen is discharged into atmosphere through surge tank；?
Conduction oil starts in temperature-rise period, when especially first investment starts, due to conduction oil itself residual moisture etc., can generate
A large amount of water vapours and other low boiling point volatile matters, these gases are discharged into surge tank again by the evacuated tube on surge tank by exhaust pipe
Gas is discharged to outside system, to ensure that system normal reliable is run；A small amount of oil vapour can be generated in temperature-rise period, therefore must
Oil vapour must be discharged, just can guarantee the normal circulation of organic heat carrier in systems.Oil vapour enters surge tank by exhaust pipe,
Due to there is a certain amount of low temperature conduction oil in surge tank, so oil vapour is discharged into low temperature conduction oil, and condense out.
Further, liquid level automatic detection device is provided in surge tank.Oil vapour enters surge tank by exhaust pipe, and
And condense out, after the conduction oil in surge tank is accumulated to a certain amount of, liquid level automatic detection device is transmitted on surge tank
Signal, leve monitor by liquid level numeric feedback to central processing unit, start to work, conduction oil in surge tank injected by filling pump
In heat storage can.
Further, blender is installed in heat storage can, when electric heater work, included temperature-detecting device is certainly
The temperature of conduction oil around dynamic detection heater, when conduction oil temperature ramp becomes larger, temperature monitoring is by numeric feedback
To central processing unit, blender starts to work, is sufficiently mixed high temperature heat conductive oil and low temperature conduction oil around electric heater, makes
Conduction oil uniform heat distribution in entire heat storage can, and control electric heater heating rate stabilization and needing in range；Work as storage
In the oil tank exothermic middle and later periods, since thermally conductive oil temperature reduces, heat transfer effect is poor, and temperature monitoring is by heat exchanger exit water
Temperature feedback adjusts the revolving speed of blender to central processing unit, then auto-controlled motor revolving speed, changes conduction oil and convection current
The convection transfer rate of tube bank strengthens convective heat transfer, while strengthening and exchanging heat between fused salt and conduction oil, so that conduction oil is for a long time
Reach certain temperature, it is final to realize that exit water temperature degree is stablized in the range of user requires.
Further, heating system setting bypass water charging system.In heat storage can exothermic process, since initially the stage of exchanging heat goes out
Saliva temperature is certain to be higher than design temperature, so setting bypass water charging system.Temperature monitoring feeds back to exit water temperature degree
Central processing unit, in the regulating valve of automatic control system main road and bypass, by supplementing cold water by bypassing, with heat exchanger exit
Hot water is mixed, and is controlled its mixed temperature and is reached requirement user requirement.
Further, liquid level automatic detection device is set in surge tank.It is set when the conduction oil of the condensation in surge tank reaches
When definite value, liquid level automatic detection device transmission signal feeds back to central processing unit, and filling pump is started to work, by leading in surge tank
It works in hot oil injection heat storage can, ensure that the recycling of conduction oil.
The invention also discloses the working methods of a kind of low ebb electric-heating heat-conductive oil and the common storage heating system of fused salt.Storage
Nitrogen is first full of in hot tank；Filling pump conveys conduction oil into heat storage can, and the nitrogen in heat storage can enters buffering through exhaust line
In tank；The electric heater of heat accumulation pot bottom begins to warm up accumulation of heat, and temperature value is fed back to centre by the first temperature-detecting device
Reason device is used to adjust the revolving speed of blender in heat storage can；Conduction oil is in starting temperature-rise period, by surge tank by the water of generation
Steam, air and low boiling point volatile matter are discharged into atmosphere；Low-temperature molten salt in corrugated plating fused salt heat-storing device is passed with conduction oil
Heat completes fused salt accumulation of heat；The regulating valve between water pump and feed water by-pass by adjusting heating system, makes to supplement cold working medium and passes through side
Road is mixed with hot working fluid；When oil storage tank starts the exothermic middle and later periods, second temperature detection device feeds back to outlet temperature
Central processing unit, central processing unit change the convection transfer rate of conduction oil and convection bank by adjusting the revolving speed of blender,
Realize the control and output of outlet condition.
In conclusion the present invention using trough-electricity, fused salt heat and accumulation of heat, peak value heat release heat accumulating type system skill
Art completes the peak load shifting on electric power, greatly reduces system equipment amount, runs more preferably stable, it can be achieved that automation control.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is heating system schematic diagram of the present invention；
Fig. 2 is fused salt heat-storing device schematic diagram of the present invention.
Wherein: 1. filling pumps；2. surge tank；3. heat storage can；4. electric heater；5. blender；6. nitrogen；7. fused salt heat accumulation
Device；8. feed pump；9. heat exchanger.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " side ", " one end ", " one side " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to Fig. 1, the present invention provides a kind of corrugated plating fused salt storage heating system, including heat-conducting oil heating and accumulation of heat
System, fused salt hold over system, heating system and central processing unit；Fused salt hold over system includes the internal fused salt for being filled with fuse salt
Heat-storing device 7, fused salt heat-storing device 7 are corrugated board structures, including multiple, and the heat accumulation of heat-conducting oil heating and hold over system is arranged in
In tank 3, heating system is connect with heat storage can 3, realizes the steady of outlet condition for carrying out heat exchange to the heat-storage medium in heat storage can
Fixed control and output, central processing unit are connect with heat-conducting oil heating and hold over system, fused salt hold over system and heating system respectively
For realizing automatic control.
Heat-conducting oil heating and hold over system include filling pump 1, surge tank 2, heat storage can 3, electric heater 4, blender 5, nitrogen
Gas 6；Heating system includes feed pump 8, heat exchanger 9 and feed water by-pass.
Filling pump 1 is connect with heat storage can 3, and heat exchanger 9 is arranged in heat storage can 3, positioned at the top of fused salt heat-storing device 7,
Feed pump 8 is connect with the input end of heat exchanger 9, and is provided with feed water by-pass, and the top of heat storage can 3 is connected with exhaust line, row
Gas pipeline divides two-way, and all the way with the piping connection of nitrogen 6, another way connect through surge tank 2 with filling pump 1, setting in surge tank 2
There is liquid level automatic detection device, liquid level automatic detection device is connect with central processing unit.
The middle and upper part of heat storage can 3 is arranged in heat exchanger 9, and the middle and lower part of heat storage can 3, fused salt is arranged in fused salt heat-storing device 7
Heat-storing device 7 is totally submerged in conduction oil, as shown in Fig. 2, fused salt heat-storing device 7 is composed of multiple groups corrugated plating, every group by
Two pieces of corrugated platings weld, and inside is filled with fuse salt, and fused salt heat-storing device 7 is corrugated board structures.Use corrugated board structures
Both it can increase its heating surface, expansion space can also be provided for fused salt.
Blender 5 is installed along the axis of heat storage can 3, blender 5 is located at top and the fused salt heat-storing device 7 of heat exchanger 9
Lower section, electric heater 4 is arranged in the bottom of heat storage can 3, and electric heater 4 is connect by temperature-detecting device with central processing unit,
For detecting the temperature of 4 surrounding conduction oil of electric heater, the exit of heat exchanger 9 is provided with temperature monitoring, temperature monitoring
It is connect with central processing unit, for monitoring the outlet Temperature of Working of heat exchanger 9, central processing unit is according to heat exchanger exit working medium temperature
Degree control blender 5 works.
After heat accumulation is completed in low ebb electric heating, 8 water supply of feed pump simultaneously passes through the heat-storage medium in heat exchanger 9 and heat storage can 3
It exchanges heat, realizes stability contorting and the output of outlet condition.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
The component for applying example can be arranged and be designed by a variety of different configurations.Therefore, below to the present invention provided in the accompanying drawings
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of of the invention selected
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Before start-up operation, it is full of nitrogen 6 in heat storage can 3, avoids inside container by the direct catalytic oxidation of air.Conduction oil by
Filling pump 1 is delivered in heat storage can 3, and the original nitrogen 6 of heat storage can 3 is discharged, and nitrogen 6 enters surge tank 2 by exhaust pipe,
It is discharged into atmosphere by surge tank 2.Conduction oil injection flow can be reasonably adjusted, in heat storage can according to the practical swell increment of conduction oil
In there are the expansion spaces of conduction oil.
When conduction oil begins to warm up accumulation of heat, due to will appear localized hyperthermia around electric heater 4, lead to thermally conductive oil decomposition,
Temperature value is fed back to central processing unit to adjust 5 revolving speed of blender, so that the height around electric heater 4 by temperature-detecting device
Low temperature conduction oil carries out being sufficiently mixed heat exchange in warm conduction oil, with heat storage can 3.
In conduction oil starting temperature-rise period, when especially first investment starts, due to conduction oil itself residual moisture etc.
Reason, can generate a large amount of water vapours and other low boiling point volatile matters, these gases are discharged into surge tank by exhaust pipe, then by buffering
Gas is discharged to outside system by the evacuated tube on tank 2, to ensure that system normal reliable is run.
Since volume will expand conduction oil in temperature-rise period, can rationally be adjusted according to the swell increment actual conditions of conduction oil
Whole conduction oil injection flow, there are the expansion spaces of conduction oil in heat storage can 3.A small amount of oil can be generated in temperature-rise period to steam
Gas, it is therefore necessary to discharge oil vapour, just can guarantee the normal circulation of organic heat carrier in systems.Oil vapour by exhaust pipe into
Enter surge tank 2, due to there is a certain amount of low temperature conduction oil in surge tank 2, so oil vapour is discharged into low temperature conduction oil, and
It condenses out.After the conduction oil in surge tank 2 is accumulated to a certain amount of, leve monitor is by liquid level numerical value on surge tank 2
Central processing unit is fed back to, filling pump 1 is started to work, and conduction oil in surge tank 2 is injected in heat storage can 3.
During electric heater 4 works, included temperature-detecting device detects 4 surrounding conduction oil of electric heater automatically
Temperature, when conduction oil temperature ramp becomes larger, temperature-detecting device is by numeric feedback to central processing unit, blender 5
It starts to work, is sufficiently mixed high temperature heat conductive oil and low temperature conduction oil around electric heater 4, makes thermally conductive in entire heat storage can 3
Oily uniform heat distribution, and control 4 heating rate of electric heater stabilization and needing in range.
In heat storage can 3 when conduction oil exothermic process, the outlet of heat exchanger 9 is equipped with exit water temperature degree monitor, while in water supply
It is furnished with bypass conduit in system.Since the stage exit water temperature degree that initially exchanges heat can be higher than design temperature, temperature monitoring will be exported
Coolant-temperature gage feeds back to central processing unit, in the regulating valve of automatic control system main road and bypass, by supplementing cold water by bypassing,
It is mixed with heat exchanger exit hot water, controls its mixed temperature and reach requirement user requirement.
The 3 heat release middle and later periods of heat storage can, since thermally conductive oil temperature reduces, heat transfer effect is poor, and temperature monitoring is by heat exchanger 9
Exit water temperature degree feeds back to central processing unit, then auto-controlled motor revolving speed to adjust the revolving speed of blender 5, changes conduction oil
With the convection transfer rate of convection bank, strengthen convective heat transfer, while strengthening and exchanging heat between fused salt and conduction oil, so that conduction oil
Reach certain temperature for a long time, it is final to realize that exit water temperature degree is stablized in the range of user requires.
The present invention uses solid heat accumulating (fused salt) and liquid heat accumulating (conduction oil) integrated structure design, is suitable
The demand for closing urban development has very big demand space industrial, civilian.The technology can effectively simplify liquid heat accumulation system
The complexity of system (conduction oil) and solid heat reservoir (fused salt), so that equipment operation is safer, stable, easy to operate.The technology
There is advantage to sum up mainly to have the following:
1, the complexity for avoiding heat-conducting oil heating system reduces equipment usage amount in the case where meeting design requirement.
By investigation, existing market be main heat-conducting oil furnace be gas heat conducting oil boiler or electric-heating heat-conductive oil boiler,
Its two kinds of heat-conducting oil system processes are substantially similar.
First conduction oil is stored in head tank, is then sent conduction oil to electric heater (or hot oil furnace) with circulating pump
In be heated to required temperature after, be supplied to each heating equipment, then through gs-oil separator, after excluding the gas in conduction oil,
It finally returns again in electric heater and heats, recycle down.Its main equipment has filling pump, cryostat, head tank (expansion
Slot), gs-oil separator, circulating pump, electric heater (hot oil furnace), the equipment such as heat user.
Heat up the water smoking: heat transfer oil heating, the dehydrating operations requirement provided according to conduction oil factory carries out.Herein
Stage, conduction oil constantly recycle between circulating pump, electric heater, heat user, gs-oil separator, head tank through head tank.Evolution
Steam and low-molecular material then pass through the blow-down pipe discharge system on head tank top.
Normal operation phase: conduction oil recycles between circulating pump, electric heater, heat user, gs-oil separator, circulating pump,
The heat of electric heater is conveyed to heat user, this stage conduction oil is without head tank.
The present invention can greatly reduce the usage amount of equipment, and capital equipment is filling pump, heat storage can, (volume is very for dashpot
It is small, only collect oil vapour and discharge air and water vapour).When conduction oil is in the heating water smoking, since conduction oil itself is residual
The reasons such as moisture are stayed, a large amount of water vapours, air and other low boiling point volatile matters can be generated, by exhaust pipe, by surge tank
Gas is discharged to outside system by air pipe, to ensure that system normal reliable is run.
Since volume will expand conduction oil in temperature-rise period, can rationally be adjusted according to the swell increment actual conditions of conduction oil
Whole conduction oil injection flow, there are the expansion spaces of conduction oil in heat storage can.A small amount of oil vapour is generated during expansion,
Therefore oil vapour must be discharged, just can guarantee the normal circulation of organic heat carrier in systems.Oil vapour is entered by exhaust pipe
Surge tank so oil vapour is discharged into low temperature conduction oil, and is condensed due to there is a certain amount of low temperature conduction oil in surge tank
Get off.After the conduction oil in surge tank is accumulated to a certain amount of, liquid level automatic detection device transmits signal, liquid on surge tank
Position monitor by liquid level numeric feedback to central processing unit, start to work by filling pump, and conduction oil in surge tank is injected heat storage can
In.
Therefore it designs through the invention, reduces the use of head tank, status slot, gs-oil separator, oil circulating pump, be to set
It is standby to greatly simplify, it runs simple to operation, it can be achieved that automatic operation.
2, the triviality for avoiding Molten salt heating system reduces equipment usage amount in the case where meeting design requirement.
Molten salt heating system is to be used as heat carrier to carry out between molten salt furnace and heating equipment after high-temperature heating fused salt
The heat transfer systems of heat cycles are mainly made of molten salt furnace, molten salt circulating pump, fused salt tank and some pipe line parts etc..
It is placed in underground to thermal, including molten salt furnace and fused salt storage tank, fused salt storage tank using fused salt as the industry of heat carrier, is melted
The fused salt inlet tube of salt furnace is connected with two pump for liquid salts in parallel being arranged in inside fused salt storage tank, the fused salt outlet of molten salt furnace
It is connected with heating equipment, the fused salt outlet of heating equipment is communicated with fused salt storage tank, and an electric heater built in fused salt storage tank, electricity adds
Hot device inlet and outlet are connected with thermal medium inlet pipe and thermal medium outlet pipe respectively, and the shell of molten salt furnace is vertical and cylindrical, burning
Device is placed in lower portion of furnace body.Device can be used as 500 DEG C of high temperature heat sources below.
Molten salt heating system operational process is as follows: the salt-mixture of powdery being put into fused salt tank first, by being mounted on tank
Fused salt is heated to fusing point or more by the modes such as interior electric heating adjoining pipe, and reaching its viscosity can be recycled with molten salt circulating pump
Value.At the same time, blank pipe in molten salt furnace need to be preheated, to prevent fused salt from condensation cured occurring when flowing through cooling coil.Disk
After pipe preheating to a certain extent, molten salt circulating pump is opened, fused salt is sent into molten salt furnace and is heated, is heated to the molten of specific temperature
Salt is transported to heating equipment, after heat supply, then along the circulatory system flows back to fused salt tank, and the above process constantly recycles, and constitutes fused salt and adds
Hot systems.When system operation stops, whole fused salts will be flowed back in fused salt tank.
In the present invention, the drawbacks of having fully considered Molten salt heating system, using a kind of novel molten salt heat accumulation mode, Ke Yiyou
The performance fused salt latent heat of effect and the method for avoiding fused salt from solidifying.We use fused salt heat-storing device heat storage technology.
During conduction oil starts to warm up, since fused salt heat-storing device hold over system is totally submerged in conduction oil,
Fused salt with conduction oil is directly exchanges heat so that temperature of molten salt increases, and reach heat storage function.In fused salt heat accumulation process
In, since temperature of molten salt increases, volume expansion will not be because of because the fused salt heat-storing device of carrying fused salt is there are expansion space
Fused salt expands and is split up corrugated plating, and will not influence conduction oil after expanding and flow between fused salt heat-storing device hold over system
Dynamic, heat transfer efficiency will not reduce.During fused salt is exothermic, the fused salt heat-storing device for carrying fused salt is received because temperature reduces
Contracting, shrinkage is also in heat-storing device control range.Therefore no matter fused salt is heat release or heat accumulation, is all wrapped in corrugated plating,
And corrugated plating will not be damaged.
3, present device band automatic stirrer, strengthens the heat exchange efficiency between working medium, and heat is made to stablize output.
After low ebb electric heating is completed, feed pump water supply is changed by heat exchanger and the heat-storage medium in heat storage can
Heat.In heat storage can when conduction oil exothermic process, heat exchanger exit is equipped with exit water temperature degree monitor, while in water supply system
Equipped with bypass conduit.Due to initially exchanging heat, stage exit water temperature degree can be higher than design temperature, and temperature monitoring is by exit water temperature degree
Central processing unit is fed back to, in the regulating valve of automatic control system main road and bypass, by supplementing cold water by bypassing, with heat exchange
Device outlet hot water mixes, and controls its mixed temperature and reaches requirement user requirement.When the heat storage can exothermic middle and later periods
In, since thermally conductive oil temperature reduces, heat transfer effect is poor, and heat exchanger exit coolant-temperature gage is fed back to central processing by temperature monitoring
Device, then auto-controlled motor revolving speed change the convection transfer rate of conduction oil and convection bank to adjust the revolving speed of blender,
Strengthen convective heat transfer, while strengthening and exchanging heat between fused salt and conduction oil, so that conduction oil reaches certain temperature for a long time, it is final real
Reveal saliva temperature to stablize in the range of user requires.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of corrugated plating fused salt storage heating system, which is characterized in that including heat-conducting oil heating and hold over system, heat supply system
System, central processing unit and fused salt heat-storing device (7)；Central processing unit respectively with heating system and heat-conducting oil heating and hold over system
Connection, fused salt heat-storing device (7) are corrugated board structures, and heat-conducting oil heating and hold over system is arranged in fused salt heat-storing device (7)
In heat storage can (3), heating system is used to carry out the heat-storage medium in heat storage can (3) stability contorting that outlet condition is realized in heat exchange
And output, central processing unit is for realizing automatic control.
2. corrugated plating fused salt storage heating system according to claim 1, which is characterized in that fused salt heat-storing device (7) packet
Multiple groups are included, every group is formed by welding by two pieces of corrugated platings, inside filling fuse salt.
3. corrugated plating fused salt storage heating system according to claim 1, which is characterized in that heat-conducting oil heating and accumulation of heat system
System includes that filling pump (1), surge tank (2) and nitrogen (6), filling pump (1) are connect with heat storage can (3), the row at the top of heat storage can (3)
Gas pipeline divides two-way, connects all the way nitrogen (6), and another way is connect through surge tank (2) with filling pump (1).
4. corrugated plating fused salt storage heating system according to claim 3, which is characterized in that fused salt heat-storing device (7) is set
It sets in conduction oil, liquid level automatic detection device is provided in surge tank (2), liquid level automatic detection device and central processing unit connect
It connects, when the conduction oil in surge tank (2) reaches setting value, liquid level automatic detection device feeds back to central processing for signal is transmitted
Conduction oil in surge tank (2) is injected heat storage can (3) by device, filling pump (1).
5. corrugated plating fused salt storage heating system according to claim 1, which is characterized in that heating system includes feed pump
(8) it is connect with heat exchanger (9), feed pump (8) with the input end of heat exchanger (9), heat exchanger (9) setting is in heat storage can (3), position
In the top of fused salt heat-storing device (7).
6. corrugated plating fused salt storage heating system according to claim 5, which is characterized in that heat exchanger (9) setting is being stored up
The middle and upper part of hot tank (3), fused salt heat-storing device (7) are arranged in the middle and lower part of heat storage can (3).
7. corrugated plating fused salt storage heating system according to claim 5, which is characterized in that the exit of heat exchanger (9)
Temperature monitoring is set, and temperature monitoring is used to feed back to heat exchanger exit coolant-temperature gage central processing unit, and central processing unit is logical
The revolving speed for overregulating blender (5) changes the convection transfer rate of conduction oil and convection bank.
8. corrugated plating fused salt storage heating system according to claim 5, which is characterized in that heating system further includes water supply
Bypass, feed water by-pass are mixed for supplementing cold water with the outlet hot water of heat exchanger (9).
9. corrugated plating fused salt storage heating system according to claim 1, which is characterized in that along heat accumulation in heat storage can (3)
The axis of tank (3) is equipped with blender (5), and the bottom of heat storage can (3) is provided with electric heater (4), and electric heater (4) passes through temperature
Degree detection device is connect with central processing unit.
10. a kind of working method of corrugated plating fused salt storage heating system according to claim 1, which is characterized in that specific
Are as follows:
Before start-up operation, nitrogen is full of in heat storage can, conduction oil is delivered in heat storage can by filling pump, and it is original that heat storage can is discharged
Nitrogen, nitrogen enters surge tank by exhaust pipe, is discharged into atmosphere by surge tank；
When conduction oil begins to warm up accumulation of heat, the temperature value of electric heater is fed back to central processing unit by temperature-detecting device, in
Central processor adjusts agitator speed, carries out low temperature conduction oil in the high temperature heat conductive oil and heat storage can around electric heater sufficiently
Mixed heat transfer；
In conduction oil starting temperature-rise period, the water vapour and low boiling point volatile matter of generation are discharged into surge tank by exhaust pipe, then
Gas is discharged to outside heating system by the evacuated tube of surge tank；
Oil vapour enters surge tank by exhaust pipe and condenses；When the conduction oil in surge tank is accumulated to setting value, on surge tank
Leve monitor by liquid level numeric feedback to central processing unit, filling pump is started to work, by conduction oil injection storage in surge tank
In hot tank；
In heat storage can when conduction oil exothermic process, heat exchanger exit is equipped with exit water temperature degree monitor, while in water supply system
Equipped with bypass conduit, the coolant-temperature gage of heat exchanger exit is fed back to central processing unit, control main road and bypass by temperature monitoring
Regulating valve is mixed with heat exchanger exit hot water by bypass supplement cold water, controls mixed temperature；
Heat exchanger exit coolant-temperature gage is fed back to central processing unit, central processing unit by heat storage can heat release middle and later periods, temperature monitoring
The revolving speed of blender is adjusted, the convection transfer rate of conduction oil and convection bank is changed, strengthens convective heat transfer, while strengthening fused salt
It exchanges heat between conduction oil, so that conduction oil is in set temperature, realizes that exit water temperature degree is stablized in the range of user requires.
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Application publication date: 20191018 |