CN110375372A - A kind of low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind feed system - Google Patents
A kind of low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind feed system Download PDFInfo
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- CN110375372A CN110375372A CN201910539199.8A CN201910539199A CN110375372A CN 110375372 A CN110375372 A CN 110375372A CN 201910539199 A CN201910539199 A CN 201910539199A CN 110375372 A CN110375372 A CN 110375372A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/006—Central heating systems using heat accumulated in storage masses air heating system
- F24D11/008—Central heating systems using heat accumulated in storage masses air heating system with conventional supplementary heat source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/08—Arrangements for drainage, venting or aerating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1084—Arrangement or mounting of control or safety devices for air heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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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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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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 invention discloses a kind of low ebb electric-heating heat-conductive oils and fused salt heat accumulating type hot wind feed system, including heat-conducting oil heating and hold over system, heating system and central processing unit；Central processing unit is connect with heating system and heat-conducting oil heating and hold over system respectively, heat-conducting oil heating and hold over system include heat storage can, helix tube and heat exchanger are provided in heat storage can, helix tube is arranged in conduction oil, heat exchanger is connect with heating system, for carrying out stability contorting and the output that outlet condition is realized in heat exchange to the heat-storage medium in heat storage can, central processing unit is for realizing automatic control.The present invention using trough-electricity heating and accumulation of heat, in peak of power consumption discharge heat systems technology, complete electric power on peak load shifting.
Description
Technical field
The invention belongs to heat supply process fields, and in particular to a kind of low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind supply
To system.
Background technique
With the development of national economy, the continuous improvement of living standards of the people, China's power structure is varied widely.
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 are made again
The about development of national economy.For this purpose, on the one hand electric industry department accelerates the paces of power construction, on the other hand propose that " peak clipping is filled out
The policy of paddy " reduces electricity consumption peak-valley difference to make full use of electric power resource.At present each province, city, area electric industry department announce one after another
Electricity consumption policy and " Peak-valley TOU power price " push the realization of " peak load shifting " with economic means.
Devoting Major Efforts To Developing valley power consumption enjoys low ebb electrovalence policy to the full, not only brings benefit to society, at the same to user with
Come economical.When using low power consumption, the heat accumulating type system of release heat not only conforms with country when heating simultaneously accumulation of heat, peak of power consumption
The policy of " Peak-valley TOU power price ", and consider from the macro policy of country and the economic interests of user, have good and wide
Prospect, the development in China had been provided with feasibility and necessity.
Storage, the release for realizing thermal energy by heat accumulating at 250~1000 DEG C of high temperature section, can be with effective solution energy
Demand and the unmatched phenomenon of supply, here it is high-temperature heat-storage technologies, improve energy utilization rate, high-temperature heat-storage technology is main at present
Applied to solar energy thermal-power-generating, building energy conservation, space technology, industrial waste heat heat recovery, " peak load shifting " on electric power
Equal fields are approved in worldwide.
High-temperature heat accumulation thermal power plant unit is that heat-storage medium is heated to height using night dip electric (23:00-7:00 totally 8 hours)
Temperature storage heat, is discharged heat by self-con-tained unit in peak times of power consumption on demand, have reached " peak load shifting ", reduce operation at
This effect.The important breakthrough of high-temperature heat accumulation thermal power plant unit technically is using solid heat accumulating and liquid heat accumulating
Integrated structure design combines heating, heat accumulation, heat exchange, heat supply and control function, forms a normal pressure heat supply machine
Group.
Summary of the invention
Add in view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of trough-electricity
Thermal conductivity hot oil and fused salt heat accumulating type hot wind feed system utilize trough-electricity heating and accumulation of heat, the release heat in peak of power consumption
Systems technology completes the peak load shifting on electric power.
The invention adopts the following technical scheme:
A kind of low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind feed system, including heat-conducting oil heating and accumulation of heat system
System, heating system and central processing unit；Central processing unit is connect with heating system and heat-conducting oil heating and hold over system respectively, is led
Hot oil heating and hold over system include heat storage can, and helix tube and heat exchanger are provided in heat storage can, and helix tube is arranged in conduction oil
In, heat exchanger is connect with heating system, realizes that stablizing for outlet condition is controlled for carrying out heat exchange to the heat-storage medium in heat storage can
System and output, central processing unit is for realizing automatic control.
Specifically, helix tube is full-closed structure, fuse salt is filled in inside, and spiral is arranged in heat storage can, helix tube
Pressure-bearing pressure is higher than 3Mpa.
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, liquid level automatic detection device, liquid level automatic detection device and central processing unit are provided in surge tank
Connection.
Specifically, heating system includes blower, the input end of blower and heat exchanger is connected, and helix tube is arranged in heat exchanger
Top.
Further, heat exchanger is shell-and-tube heat exchanger, and the middle and upper part of heat storage can is arranged in, and helix tube is arranged in heat storage can
Middle and lower part.
Further, heating system further includes air-supply bypass, and air-supply bypass is connect with the outlet of heat exchanger for supplementing
Cold working medium is mixed with hot working fluid.
Specifically, the axis in heat storage can along heat storage can is equipped with blender, blender is through motor and central processing unit
Connection.
Specifically, the bottom of heat storage can is provided with electric heater, electric heater passes through the first temperature-detecting device and center
Processor connection.
Specifically, the exit of helix tube is provided with second temperature detection device, second temperature detection device will be for that will go out
Mouth Temperature of Working feeds back to central processing unit.
Compared with prior art, the present invention at least has the advantages that
A kind of low ebb electric-heating heat-conductive oil of the present invention and fused salt heat accumulating type hot air supply device, wherein heat-conducting oil heating and storage
Hot systems avoid the complexity of conventional thermal conductive heating system for oil, and equipment usage amount is reduced in the case where meeting design requirement.Fused salt adds
The drawbacks of heat and hold over system have fully considered Molten salt heating system, can be effective using a kind of novel molten salt heat accumulation mode
Play fused salt latent heat.
Further, spiral tube heat exchanger is due to its special structure, compared with other heat exchangers, working media
It can be considered adverse current, considerably increase the coefficient of heat transfer, there is relatively high heat exchange efficiency.This heat conduction tubes is serpentine-like coil-like, tool
There is spring effect, so missing without destroying caused by thermal stress；And facility compact, installation are easy.
Further, heat-conducting oil heating and hold over system are deposited by the heat for converting conduction oil and fused salt for valley electricity
Storage is got up, and is released to heat user by working medium and is utilized.
Further, the setting of liquid level automatic detection device can monitor the liquid level in surge tank, and sequencing is automatic
Oiling pump work is controlled, to hot tank filling heat-conductive oil, and maintains the stabilization in surge tank with conduction oil volume in hot tank.
Further, air is passed through heat exchanger by blower by heating system, is had with conduction oil and heat pipe heat exchanging
There is the hot-air of equilibrium temperature for users to use.
Further, shell-and-tube heat exchanger has the advantages that energy-efficient that the coefficient of heat transfer is up to 6000-8000W/m2.k,
The high efficient heat exchanging of conduction oil and heat carrier can be achieved.Simultaneously because design simple and flexible, cheap, gas design cost is lower.
Further, blow bypass purpose be adjust air outlet Temperature of Working stabilization, prevent Temperature of Working to fluctuate
It is too big, it is unfavorable for the practical of heat user.
Further, reach by auto-adjustment control blender in heating system and stablize external quantity of heat given up.
Further, electric heater is only started to work in low power consumption, and heating conduction oil makes its storage energy.
Further, second temperature detection device matter real-time measurement sender property outlet temperature and central processing unit is fed back to, when
When temperature and setting value tolerance are larger, central processing unit generation movement maintains Temperature of Working to stablize.
In conclusion the present invention uses solid heat accumulating (fused salt) and liquid heat accumulating (conduction oil) integral structure
Design is the demand for being suitble to urban development, has very big demand space industrial, civilian.The technology can effectively simplify
The complexity of liquid heat reservoir (conduction oil) and solid heat reservoir (fused salt), so that equipment operation is safer, stable, easily grasps
Make.
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 present system schematic diagram；
Fig. 2 is helix tube schematic diagram.
Wherein: 1. filling pumps；2. surge tank；3. heat storage can；4. electric heater；5. blender；6. nitrogen；7. helix tube；
8. blower；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, a kind of low ebb electric-heating heat-conductive oil of the present invention and fused salt heat accumulating type hot wind feed system, including it is thermally conductive
Oil heating and hold over system, fused salt hold over system, heating system and central processing unit；Heat-conducting oil heating and hold over system include note
Oil pump 1, surge tank 2, heat storage can 3, electric heater 4, blender 5, nitrogen 6；Fused salt hold over system includes helix tube 7, heat supply system
System includes blower 8, heat exchanger 9 and air-supply bypass.Including multiple, spiral is arranged in heat storage can 3 helix tube 7, blower 8 and heat exchange
Device 9 connects, for carrying out stability contorting and the output that outlet condition is realized in heat exchange, central processing to the heat-storage medium in heat storage can
Device is connect respectively with heat-conducting oil heating and hold over system, fused salt hold over system and heating system for realizing automatic control.
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 helix tube 7, blower 8 with
The input end of heat exchanger 9 connects, and is provided with air-supply bypass, and the top of heat storage can 3 is connected with exhaust line, and exhaust line is divided to two
Road, all the way with the piping connection of nitrogen 6, another way connect through surge tank 2 with filling pump 1, and it is automatic to be provided with liquid level in surge tank 2
Detection device, liquid level automatic detection device are connect with central processing unit, and liquid level automatic detection device uses general industrial liquid
Position measuring sensor is able to achieve the conversion of analog signal and digital signal and signal can be passed to central processing unit, centre
Reason device then uses general industrial single-chip microcontroller.
Along the axis of heat storage can 3 blender 5 is installed, blender 5 is located at top and the helix tube 7 of heat exchanger 9
Lower section is connect by motor with central processing unit, and electric heater 4 is arranged in the bottom of heat storage can 3, and electric heater 4 includes multiple
And be symmetrical arranged, the blender 5 of 7 lower section of helix tube between multiple electric heaters 4, examined by the first temperature by electric heater 4
It surveys device to connect with central processing unit, for detecting the temperature of 4 surrounding conduction oil of electric heater, the exit setting of heat exchanger 9
There is second temperature detection device, second temperature detection device is connect with central processing unit, for monitoring the outlet working medium of heat exchanger 9
Temperature, central processing unit control blender 5 according to heat exchanger exit Temperature of Working and work, and temperature-detecting device is general industry
With temperature sensor, digital signal is converted by analog signal in real time pass to center by connecting to be able to achieve with central processing unit
Processor waits further order instruction.
Heat exchanger 9 is shell-and-tube heat exchanger, the middle and upper part of heat storage can 3 is arranged in, helix tube 7 is arranged in heat storage can 3
Lower part, helix tube 7 are totally submerged in conduction oil, and helix tube 7 is arranged in heat storage can 3, as shown in Fig. 2, helix tube 7 is totally-enclosed
Structure, inside are filled with fuse salt, and the practical heat exchange area of helix tube 7 reaches accumulation of heat requirement, between inside/outside diameter size, spiral
Meet industrial requirements away from parameters such as, coiled pipe numbers, pressure-bearing pressure must be higher than 3Mpa.
After heat accumulation is completed in low ebb electric heating, blower 8 blow and by the heat-storage medium in heat exchanger 9 and heat storage can 3 into
Row heat exchange, 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.
A kind of low ebb electric-heating heat-conductive oil of the present invention and fused salt heat accumulating type hot wind feed system, before start-up operation, first to storage
It is full of nitrogen 6 in hot tank 3, avoids container inside and the direct catalytic oxidation of air, conduction oil is then conveyed to storage by filling pump 1
In hot tank 3, the nitrogen 6 in heat storage can 3 is discharged, nitrogen 6 enters surge tank 2 by exhaust pipe, then is discharged into atmosphere.
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
Solution, therefore temperature value is fed back to central processing unit to adjust 5 revolving speed of blender, so that electric heating by the first temperature-detecting device
High temperature heat conductive oil around device 4 is sufficiently exchanged heat with low temperature conduction oil.
When conduction oil starting temperature-rise period in, especially put into operation for the first time, due to conduction oil itself residual moisture etc.
Reason can generate a large amount of water vapours, air and other low boiling point volatile matters, will by the air pipe on surge tank 2 by exhaust pipe
Gas is discharged to outside system, to ensure that system normal reliable is run.
When volume can expand conduction oil in temperature-rise period, and generate a small amount of oil vapour, it is necessary to be discharged to this, ability
Guarantee the normal circulation of organic heat carrier in systems.Oil vapour enters surge tank 2 by exhaust pipe, due to having in surge tank 2
A certain amount of low temperature conduction oil, so oil vapour can condense out in low temperature conduction oil, when the conduction oil in surge tank 2 reaches
After a certain amount of, liquid level automatic detection device by liquid level numeric feedback to central processing unit, start to work, will buffer by filling pump 1
It works in more conduction oil injection heat storage cans 3 in tank 2.
During electric heater 4 works, the first temperature-detecting device near electric heater 4 detects electric heating automatically
The temperature of 4 surrounding conduction oil of device, when conduction oil temperature ramp becomes larger, during the first temperature-detecting device gives numeric feedback
Central processor, blender 5 are started to work, so that the high temperature heat conductive oil around electric heater 4 is sufficiently mixed with low temperature conduction oil, are led
Hot oil uniform heat distribution, 4 heating rate of electric heater stabilization are needing in range.
During conduction oil starts to warm up, due to being full of conduction oil outside helix tube 7, the fused salt in helix tube 7 is added
Heat, and heat up, heat is stored in fused salt.
Low ebb electric heating complete heat accumulation after, blower 8 by air blast in heat exchanger 9 with the heat-storage medium in heat storage can 3
It exchanges heat, realizes stability contorting and the output of outlet condition.
In 3 conduction oil exothermic process of heat storage can, heat storage can 3 is equipped with the second temperature that monitoring heat exchanger 9 exports Temperature of Working
Detection device, while equipped with air-supply bypass conduit in air feed system.Initial stage Temperature of Working can be higher than design Temperature of Working, the
Outlet temperature is fed back to central processing unit by two temperature-detecting devices, automatically controls the regulating valve of air feed system main road and bypass,
Make to be mixed by the cold working medium of bypass supplement with hot working fluid, control outlet Temperature of Working reaches requirement.
Oil storage tank 3 starts the heat release middle and later periods, and since thermally conductive oil temperature reduces, heat transfer effect is poor, second temperature detection dress
It sets and outlet temperature is fed back into central processing unit, central processing unit controls motor speed to adjust the revolving speed of blender 5, changes
The convection transfer rate of conduction oil and convection bank strengthens convective heat transfer, while there is heat exchange between fused salt and conduction oil, so that
Conduction oil reaches certain temperature for a long time, realizes stability contorting and the output of outlet hot wind operating condition.
From the point of view of current research, using solid heat accumulating (fused salt) and liquid heat accumulating (conduction oil) integration knot
Structure design is the demand for being suitble to urban development, has very big demand space industrial, civilian.The present invention can effective letter
Change the complexity of liquid heat reservoir (conduction oil) and solid heat reservoir (fused salt), so that equipment operation is safer, stable, easy
Operation.Advantages of the present invention, which sums up, mainly the following:
(1) 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 with circulating pump
After being heated to required temperature into electric heater (or hot oil furnace), it is supplied to each heating equipment, then through gs-oil separator,
After excluding the gas and impurity in conduction oil, finally returns again in electric heater and heat, recycle down.Its main equipment
There are filling pump, cryostat, head tank (expansion slot), gs-oil separator, circulating pump, electric heater (hot oil furnace), heat user etc. to set
It is standby.
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 circulating pump,
It is recycled between electric heater, heat user, gs-oil separator, circulating pump, the heat of electric heater is conveyed to heat user, this stage leads
Hot oil is without head tank.
The present invention greatly reduces the usage amount of equipment, and capital equipment is filling pump, heat storage can, dashpot (receive by volume very little
Collect oil vapour and discharge air and water vapour).When conduction oil is in the heating water smoking, due to originals such as conduction oil itself residual moistures
Cause can generate a large amount of water vapours, air and other low boiling point volatile matters, by exhaust pipe, by the air pipe on surge tank by gas
Body is discharged to outside system, to ensure that system normal reliable is run.
When volume will expand conduction oil in temperature-rise period, can be reasonably adjusted according to the swell increment actual conditions of conduction oil
Conduction oil injection flow, there are the expansion spaces of conduction oil in heat storage can.A small amount of oil vapour can be generated in expansion process, it must
This must be discharged, just can guarantee the normal circulation of conduction oil 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 can condense out in low temperature conduction oil, work as surge tank
In conduction oil reach a certain amount of after, liquid level automatic detection device transmits signal, and leve monitor is by liquid level numeric feedback
To central processing unit, filling pump is started to work, and will be worked in more conduction oil injection heat storage cans in surge tank.
Therefore it designs through the invention, reduces the use of head tank, status slot, gs-oil separator, oil circulating pump, make to set
It is standby to greatly simplify, it runs simple to operation, it can be achieved that automatic operation.
(2) complexity for avoiding Molten salt heating system, in the case where meeting design requirement reduce equipment usage amount,
In general, Molten salt heating system be to fused salt after high-temperature heating as heat carrier molten salt furnace and heating equipment it
Between carry out heat cycles heat transfer systems, mainly by groups such as molten salt furnace, molten salt circulating pump, fused salt tank and some pipe line parts
At.
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 traditional Molten salt heating system, fused salt cannot be solidified again, otherwise will be consumed after melting for the first time
Amount of heat melts fused salt again, causes heat waste.And whole system cannot achieve entirely in operation operating aspect
Automation control.
The present invention has fully considered the drawbacks of Molten salt heating system, can be effective using a kind of novel molten salt heat accumulation mode
Performance fused salt latent heat and avoid fused salt solidify method.We are realized using fused salt is filled in spiral tube heat exchanger
The purpose of fused salt accumulation of heat.
During conduction oil starts to warm up, since helix tube is totally submerged in conduction oil, fused salt and conduction oil
Between conduct heat so that the temperature of fused salt increases, reach the function of heat accumulation.When heat is released to heating medium in conduction oil
Afterwards, the fused salt in helix tube further rejects heat to conduction oil, and thermally conductive oil temperature further increases.
(3) present invention band automatic stirrer strengthens the heat exchange efficiency between working medium and is that heat stablizes externally output.
After heat accumulation is completed in low ebb electric heating, blower air blast is changed by heat exchanger and the heat-storage medium in heat storage can
Heat.During heat storage can conduction oil is exothermic, heat storage can is equipped with the first temperature monitoring of monitoring heat exchanger exit Temperature of Working
Device, while being furnished with bypass conduit in heating system.Initial stage Temperature of Working can be higher than design Temperature of Working, temperature monitoring
Outlet temperature is fed back into central processing unit, in the regulating valve for automatically controlling heating system main road and bypass, makes to mend by bypass
It fills cold working medium to be mixed with hot working fluid, control outlet Temperature of Working reaches requirement.When oil storage tank starts the exothermic middle and later periods
In, since thermally conductive oil temperature reduces, heat transfer effect is poor, and outlet temperature is fed back to central processing unit by temperature monitoring, then certainly
It is dynamic to control motor speed to adjust the revolving speed of blender, change the convection transfer rate of conduction oil and convection bank, reinforcing pair
Spread heat.
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 low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind feed system, which is characterized in that including heat-conducting oil heating
And hold over system, heating system and central processing unit；Central processing unit respectively with heating system and heat-conducting oil heating and accumulation of heat system
System connection, heat-conducting oil heating and hold over system include heat storage can (3), are provided with helix tube (7) and heat exchanger in heat storage can (3)
(9), helix tube (7) is arranged in conduction oil, and heat exchanger (9) is connect with heating system, for being situated between to the heat accumulation in heat storage can (3)
Matter carries out stability contorting and the output that outlet condition is realized in heat exchange, and central processing unit is for realizing automatic control.
2. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, which is characterized in that
Helix tube (7) is full-closed structure, and inside filling fuse salt, spiral setting is in heat storage can (3), the pressure-bearing pressure of helix tube (7)
Power is higher than 3Mpa.
3. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, which is characterized in that
Heat-conducting oil heating and hold over system include filling pump (1), surge tank (2) and nitrogen (6), and filling pump (1) and heat storage can (3) are even
It connects, the exhaust line at the top of heat storage can (3) divides two-way, connects all the way nitrogen (6), and another way connects through surge tank (2) and filling pump (1)
It connects.
4. low ebb electric-heating heat-conductive oil according to claim 3 and fused salt heat accumulating type hot wind feed system, which is characterized in that
It is provided with liquid level automatic detection device in surge tank (2), liquid level automatic detection device is connect with central processing unit.
5. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, which is characterized in that
Heating system includes blower (8), and blower (8) is connect with the input end of heat exchanger (9), and heat exchanger (9) is arranged in helix tube (7)
Top.
6. low ebb electric-heating heat-conductive oil according to claim 5 and fused salt heat accumulating type hot wind feed system, which is characterized in that
Heat exchanger (9) is shell-and-tube heat exchanger, and setting is arranged in heat storage can (3) in the middle and upper part of heat storage can (3), helix tube (7)
Lower part.
7. low ebb electric-heating heat-conductive oil and fused salt heat accumulating type hot wind feed system, feature exist according to claim 1 or 5
In heating system further includes air-supply bypass, and air-supply bypass is connect with the outlet of heat exchanger (9) for supplementing cold working medium and hot working fluid
Mixing.
8. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, which is characterized in that
Axis in heat storage can (3) along heat storage can (3) is equipped with blender (5), and blender (5) connects through motor and central processing unit
It connects.
9. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, which is characterized in that
The bottom of heat storage can (3) is provided with electric heater (4), and electric heater (4) passes through the first temperature-detecting device and central processing unit
Connection.
10. low ebb electric-heating heat-conductive oil according to claim 1 and fused salt heat accumulating type hot wind feed system, feature exist
In the exit of helix tube (7) is provided with second temperature detection device, and second temperature detection device will be for that will export Temperature of Working
Feed back to central processing unit.
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