CN102620272B - Solar steam heat collecting system and heating control method thereof - Google Patents
Solar steam heat collecting system and heating control method thereof Download PDFInfo
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- CN102620272B CN102620272B CN201210087504.2A CN201210087504A CN102620272B CN 102620272 B CN102620272 B CN 102620272B CN 201210087504 A CN201210087504 A CN 201210087504A CN 102620272 B CN102620272 B CN 102620272B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000005338 heat storage Methods 0.000 claims description 54
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
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- 239000012530 fluid Substances 0.000 claims description 13
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- 230000033228 biological regulation Effects 0.000 claims description 3
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- 239000002918 waste heat Substances 0.000 claims description 3
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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
- Y02E10/44—Heat exchange systems
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Abstract
The invention discloses a solar steam heat collecting system and a heating control method thereof. The solar steam heat collecting system comprises a vacuum tube heat collecting device, a frequency conversion high frequency electric boiler, a numerical control computer controlling device and a water pretreatment device, wherein the vacuum tube heat collecting device, the frequency conversion high frequency electric boiler and the water pretreatment device are communicated with one another, the numerical control computer controlling device controls operations of the vacuum tube heat collecting device, the water pretreatment device and the frequency conversion high frequency electric boiler, the vacuum tube heat collecting device comprises a large gap vacuum heat collecting tube part and a Z-shaped connect tube part, the large gap vacuum heat collecting tube part comprises a large gap vacuum heat collecting tube and a U-shaped heat exchanger tube with fins, and a vacuum insulating layer of the large gap vacuum heat collecting tube is over 10 times thicker than an outer tube of the large gap vacuum heat collecting tube. The heating control method includes starting up, sampling circularly, controlling an implementation according to sampling results, and shutting down. The solar steam heat collecting system and the heating control method thereof have the advantages of being high in heat collecting temperature, good in thermal insulation effect, high in conversion and use ratio of the heat energy, reasonable in structure, high in cost-performance ratio and the like.
Description
Technical field
The present invention relates to a kind of solar energy steam collecting system and method for heating and controlling thereof.
Background technology
The energy is the primary essential of human social development, very fast development along with rapid growth and the modern industry of population in the world, energy supply and demand contradiction, massive discharge of pollutant in the resource exploitation that the mankind are excessive and use, has badly influenced the natural environment that we depend on for existence; So seek the great attention that green, environmental protection, regenerative resource cause countries in the world already.
Solar energy is as research and development of new sources of energy utilization, the scientist of countries in the world from nineteen fifties, with regard to how absorbing heat energy and the thermal power transfer of the sun, carried out a large amount of exploratory developments, condition has been created in the utilization that the success of the eighties vacuum heat-collecting technology is solar energy.But vacuous solar energy steam collecting system of the prior art mostly is cryogenic vacuum heat collector, just utilizes solar energy to provide some domestic hot-waters to people, and effective rate of utilization is low; At all cannot be for needing in a large number the industrial and agricultural production service (utilizing solar energy that high-temperature vapour is provided) of high temperature heat, though have focusing high temperature heat collection device to use in energy conversion, go because product structure, mounting condition and its cost of investment cannot promote the use of in the industrial and agricultural production that needs in a large number energy-saving and emission-reduction.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing above-mentioned deficiency in prior art, first technical problem to be solved is, by the improvement of vacuum heat collection pipe and thermal-arrest sports association collection, thereby make solar energy steam collecting system in hot operation state, by low-voltage vacuum hot swapping, realizing and directly utilizing solar heat production high-temperature vapour is industrial and agricultural production service, makes solar energy really become the green novel energy source of alternative mineral energy.Another problem to be solved by this invention is by changing the method for heating and controlling of solar energy steam collecting system, thereby improve firing rate and the efficiency of solar energy steam collecting system and electric boiler, improve better electric boiler safety in utilization and service life simultaneously.
The present invention solves the technical scheme that above-mentioned first technical problem adopts: this solar energy steam collecting system, comprise vacuum heat collection pipe device, frequency-conversion high-frequency electric boiler, digital control computer control device and water pretreatment equipment, vacuum heat collection pipe device, frequency-conversion high-frequency electric boiler, water pretreatment equipment is by the mutual UNICOM of connecting pipeline, digital control computer control device and vacuum tube heat collector, water pretreatment equipment, frequency-conversion high-frequency electric boiler is all electrically connected to and controls vacuum tube heat collector, water pretreatment equipment, the operation of frequency-conversion high-frequency electric boiler, it is characterized in that described vacuum heat collection pipe device is comprised of large space vacuum heat-collecting duct member and Z-type union pipe parts, large space vacuum heat-collecting duct member is comprised of large space vacuum heat collection pipe and finned U-shaped heat-exchange tube, Z-type union pipe parts are connect or firmly connect Z-shaped pipe fitting and formed with the shell of heat-insulation layer by soft.The vacuum heat-preserving layer thickness of described large space vacuum heat collection pipe is outer the more than ten times of tube thickness of large space vacuum heat collection pipe.
Water pretreatment equipment of the present invention comprises water softener, heat storage water tank, pipeline, escape pipe, hot-water circulation pipe, described digital control computer control device comprises computer controller, injection flow valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, power-supply system, the first water injecting pump, the second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank, thermal-collecting tube temperature sensor is arranged on Z-type union pipe knockdown export end, cistern water level sensor, water tank temperature installation of sensors in heat storage water tank, injection flow valve, water inlet UNICOM to the second water injecting pump delivery port of the first hot water circuit valve, the second water injecting pump water inlet and heat storage water tank UNICOM, injection flow valve, the first hot water circuit valve delivery port and vacuum tube heat collector one end UNICOM, vacuum tube heat collector one end and drain pump water inlet UNICOM, drain pump delivery port and first emptying valve water inlet UNICOM, first emptying valve delivery port and heat storage water tank UNICOM, the vacuum tube heat collector other end is provided with second emptying valve, between the vacuum tube heat collector other end and heat storage water tank, be connected with hot-water circulation pipe, the second hot water circuit valve is arranged on hot-water circulation pipe, between the vacuum tube heat collector other end and frequency-conversion high-frequency electric boiler, pass through escape pipe UNICOM, air outlet valve is installed on escape pipe, on connecting pipeline between water softener and heat storage water tank, water compensating valve is installed, the first water injecting pump is installed on the connecting pipeline between frequency-conversion high-frequency electric boiler and heat storage water tank, heater water tank is installed in heat storage water tank, computer controller and the power-supply system controller that is electrically connected to form, controller and injection flow valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, the second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank and frequency-conversion high-frequency electric boiler are all electrically connected to, in computer controller, be provided with signal amplifier, the input of signal amplifier is electrically connected to TEMP instrument, in power-supply system, be provided with frequency modulator, the output of signal amplifier is electrically connected to frequency modulator input, and the output of frequency modulator is electrically connected to induction heater.
Frequency-conversion high-frequency electric boiler of the present invention comprises radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP instrument, gas and water separator, electric boiler body of heater and induction heater, gas and water separator is by connecting pipeline and electric boiler body of heater UNICOM, radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP instrument, gas and water separator and induction heater are installed in electric boiler body of heater, radio-frequency generator, electro connecting pressure gauge, TEMP instrument and induction heater are all electrically connected to controller, fluid level controller is electrically connected to the first water injecting pump.
Digital control computer control device of the present invention is also provided with thermal-collecting tube second temperature sensor, and thermal-collecting tube the second temperature sensor is arranged on middle part or the middle and upper part of vacuum tube heat collector, and thermal-collecting tube the second temperature sensor is electrically connected to controller.
Digital control computer control device of the present invention is also provided with display unit, and display unit is electrically connected to controller.
The present invention solves the technical scheme that above-mentioned second technical problem adopt: a kind of control method of solar energy steam collecting system, comprises start; Circulating sampling is also controlled and is carried out according to sampled result; Shutdown; It is characterized in that described circulating sampling and control execution step according to sampled result comprising the following steps: digital control computer control device image data; When the temperature of thermal-collecting tube temperature sensor collection reaches the circulating temperature of setting, the water that digital control computer control device is controlled in heat storage water tank heats up by the circulation of vacuum tube heat collector; When the temperature of thermal-collecting tube temperature sensor collection reaches the preheat temperature of setting, the water that digital control computer control device is controlled in heat storage water tank stops circulation; When the temperature of thermal-collecting tube temperature sensor collection reaches the feed air temperature of setting, the steam that digital control computer control device is controlled in vacuum tube heat collector is sent into steam boiler for user through frequency-conversion high-frequency electric boiler; In the electric boiler body of heater of TEMP instrument collection, the temperature of steam changes while exceeding the steam temperature scope of setting, digital control computer control device flow automatic regulation, constant air outlet temperature; When the pressure in the electric boiler body of heater of electro connecting pressure gauge collection is less than the supply gas pressure of setting, digital control computer control device is controlled the size of current that induction heater starts and regulate induction heater, by electric boiler, heats to realize continuous air feed; The water level of the heat storage water tank gathering when cistern water level sensor is lower than the water tank moisturizing water level of setting, and digital control computer control device is controlled heat storage water tank is carried out to moisturizing; When the water level of the heat storage water tank of cistern water level sensor collection reaches the water tank upper limit water level of setting, digital control computer control device stops the moisturizing of heat storage water tank; When the temperature of solar energy heat collection pipe temperature sensor collection drops to the water temperature below 130 degrees Celsius and in the heat storage water tank gathering higher than water tank temperature sensor, digital control computer control device starts at full capacity frequency-conversion high-frequency electric boiler and guarantees air feed, utilizes solar energy by the water circulation heating in heat storage water tank simultaneously; When the temperature of thermal-collecting tube temperature sensor collection is identical with the heat storage water tank water temperature of water tank temperature sensor collection, digital control computer control device is sent the water in vacuum tube heat collector into heat storage water tank, realizes waste heat and makes full use of; Revolution control computer controller image data step.
Circulating temperature of the present invention is 70～95 degrees Celsius, and preheat temperature is 95 degrees Celsius, and feed air temperature is 140 degrees Celsius, and steam temperature scope is 140 degrees Celsius～170 degrees Celsius, and supply gas pressure is between 0.2～0.8 MPa.
Digital control computer control device of the present invention is also provided with thermal-collecting tube second temperature sensor, thermal-collecting tube the second temperature sensor is arranged on middle part or the middle and upper part of vacuum tube heat collector, in the electric boiler body of heater of TEMP instrument collection the temperature of steam within the scope of the steam temperature of setting simultaneously the temperature difference of thermal-collecting tube temperature sensor and thermal-collecting tube the second temperature sensor reach design temperature when poor, according to temperature extent, carry out the adjusting of injection flow valve flow, reach the object regulating in advance, make system more stable.
The present invention compared with prior art, has the following advantages and effect: 1, the full glass vacuum heat collection pipe in large space has improved heat-collecting temperature and heat insulation effect, and thermal power transfer utilization rate reaches more than 90%; 2, manufacturing process is simple, scientific structure design is reasonable, and product superiority of effectiveness is remarkable, with existing solar energy steam heat collector ratio, can reduce investment and reach more than 50%; 3, whole-course automation is controlled, and has realized the combination of solar energy and steam boiler, makes solar energy really become operational green novel energy source; 4, overall structure is simple, easy for installation, is not subject to geographical climate environment condition restriction, for industrial and agricultural production big power consumer carries out energy-saving and emission-reduction technological transformation, provides a kind of economy, safe and reliable Green Product.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention.
Fig. 2 is structure and the annexation schematic diagram of embodiment of the present invention vacuum tube heat collector.
Fig. 3 is the structural representation of the large space of embodiment of the present invention vacuum heat-collecting duct member.
Fig. 4 is that the A-A of the vacuum heat collection pipe of large space shown in Fig. 3 analyses and observe enlarged diagram.
Fig. 5 is structure and the annexation schematic diagram of embodiment of the present invention frequency-conversion high-frequency electric boiler.
Fig. 6 is structure and the annexation schematic diagram of embodiment of the present invention water pretreatment equipment.
Fig. 7 is the circuit theory schematic diagram of the embodiment of the present invention.
Fig. 8 is that the present invention executes routine frequency conversion electric current principle schematic.
The specific embodiment
Referring to Fig. 1～Fig. 8, embodiment of the present invention solar energy steam collecting system, mainly by vacuum tube heat collector I, frequency-conversion high-frequency electric boiler II, digital control computer control device III and water pretreatment equipment IV form, vacuum tube heat collector I, water pretreatment equipment IV, frequency-conversion high-frequency electric boiler II is by the mutual UNICOM of connecting pipeline, digital control computer control device III and vacuum tube heat collector I, water pretreatment equipment IV, frequency-conversion high-frequency electric boiler II is all electrically connected to and controls vacuum tube heat collector I, water pretreatment equipment IV, the operation of frequency-conversion high-frequency electric boiler II, vacuum tube heat collector I can be arranged on sun-drenched roofing, metope or spacious ground, all the other equipment are arranged on indoor.
Vacuum tube heat collector I is comprised of vacuum heat-collecting duct member I-1, large space and Z-type union pipe parts I-2, vacuum heat-collecting duct member I-1, large space is comprised of large space vacuum heat collection pipe 1 and finned U-shaped heat-exchange tube 2, and Z-type union pipe parts I-2 are by taking over 3, form with the outer cover 8 of heat-insulation layer.Vacuum heat-insulating layer 4 thickness of the large space of the present embodiment vacuum heat collection pipe 1 (between large space vacuum heat collection pipe 1 outer tube and inner tube along diametric distance) L >=10*D(D is the thickness of large space vacuum heat collection pipe 1 outer tube, lower same, referring to Fig. 4), this improvement makes when heat-collecting temperature (referring to the temperature in U-shaped heat-exchange tube 2) reaches 250 ℃ of high temperature large space vacuum heat collection pipe 1 outer tube surface temperature still remain on normal temperature state (in environment temperature ± 2 ℃, the heat-collecting heat-preserving space thickness of existing vacuum tube conventionally≤2*D, when heat-collecting temperature reaches 130 ℃, surfaces of collector tubes temperature reaches 38 ℃ conventionally, high temperature efficiency obviously declines), (solar energy is by area harvest energy by Z-type union pipe parts I-2, large space vacuum heat collection pipe 1 trail to be become to huge solar energy heating body, only have enough large collector area just can provide available steam), by digital control computer control device III, high-temperature-hot-water in heat storage water tank 25 is injected to vacuum tube heat collector I and carry out ebullition, gasification, now high-temperature vapour flows out from escape pipe 12.
Frequency-conversion high-frequency electric boiler II comprises that radio-frequency generator 13, fluid level controller 14, electro connecting pressure gauge 15, TEMP instrument 16, gas and water separator 17, electric boiler body of heater 18(are the stainless steel body of heater with lagging casing) and induction heater 19.Gas and water separator 17 is by connecting pipeline and electric boiler shell 18 UNICOMs, and radio-frequency generator 13, fluid level controller 14, electro connecting pressure gauge 15, TEMP instrument 16, gas and water separator 17 and induction heater 19 are installed in electric boiler body of heater 18.Water pretreatment equipment IV comprises water softener 23, heat storage water tank 25, pipeline 34, escape pipe 12, the hot-water circulation pipe 11 of resin exchanger.Water pretreatment equipment IV can adopt existing techniques in realizing.
Digital control computer control device III comprises computer controller 20, injection flow valve 27, air outlet valve 10, the first hot water circuit valve 28, the second hot water circuit valve 9, first emptying valve 29, second emptying valve 33, water compensating valve 22, power-supply system 21, the first water injecting pump 24, the second water injecting pump 26, drain pump 30, thermal-collecting tube temperature sensor 5, cistern water level sensor 31, water tank temperature sensor 32, display unit 35 and heater water tank 36, and display unit 35 can adopt display or indicator lamp.Thermal-collecting tube temperature sensor 5 is arranged on the port of export of Z-type union pipe parts I-2, cistern water level sensor 31 is arranged in heat storage water tank 25, injection flow valve 27, water inlet UNICOM to the second water injecting pump 26 delivery ports of the first hot water circuit valve 28, the second water injecting pump 26 water inlets and heat storage water tank 25 UNICOMs, injection flow valve 27, the first hot water circuit valve 28 delivery ports and vacuum tube heat collector I one end UNICOM, vacuum tube heat collector I one end and drain pump 30 water inlet UNICOMs, drain pump 30 delivery ports and first emptying valve 29 water inlet UNICOMs, first emptying valve 29 delivery ports and heat storage water tank 25 UNICOMs, the vacuum tube heat collector I other end is provided with second emptying valve 33, between the vacuum tube heat collector I other end and heat storage water tank 25, be connected with hot-water circulation pipe 11, the second hot water circuit valve 9 is arranged on (near the position of vacuum tube heat collector I) on hot-water circulation pipe 11, between the vacuum tube heat collector I other end and frequency-conversion high-frequency electric boiler II, pass through escape pipe 12 UNICOMs, air outlet valve 10 is installed on escape pipe 12, on connecting pipeline between water softener 23 and heat storage water tank 25, water compensating valve 22 is installed, on connecting pipeline between frequency-conversion high-frequency electric boiler II and digital control computer control device III, the first water injecting pump 24 is installed, fluid level controller 14 is electrically connected to for the water level in automatic control electric boiler with the first water injecting pump 24, water level in electric boiler body of heater 18 adds water level lower than fluid level controller 14 and puts, the first water injecting pump 24 is opened, electric boiler is carried out to moisturizing, water level in electric boiler body of heater 18 stops adding water level higher than fluid level controller 14 to be put, and the first water injecting pump 24 cuts out, and stops the water that adds of electric boiler.Heater water tank 36 is installed in heat storage water tank 25, and the water temperature in heat storage water tank 25 is lower, in the time of need to heating, can start heater water tank 36.Computer controller 20 and power-supply system 21 controller that is electrically connected to form, controller is all electrically connected to radio-frequency generator 13, electro connecting pressure gauge 15, TEMP instrument 16 and the induction heater 19 of injection flow valve 27, air outlet valve 10, the first hot water circuit valve 28, the second hot water circuit valve 9, first emptying valve 29, second emptying valve 33, water compensating valve 22, the first water injecting pump 24, the second water injecting pump 26, drain pump 30, thermal-collecting tube temperature sensor 5, cistern water level sensor 31, water tank temperature sensor 32, display unit 35 and frequency-conversion high-frequency electric boiler II.In computer controller 20, be provided with signal amplifier 20-1, signal amplifier 20-1 input is electrically connected to TEMP instrument 16, in power-supply system 21, be provided with frequency modulator 21-1, the output of signal amplifier 20-1 is electrically connected to frequency modulator 21-1 input, the output of frequency modulator 21-1 is electrically connected to induction heater 19, adjust the size of output current, produce the technique effect that supplements the energy and save the energy.Digital control computer control device III, according to operational order and the information collecting, after via controller information processing is delivered to signal required control terminal, realizes automatically and controlling.Digital control computer control device III can adopt existing techniques in realizing, and by duty in display unit 35.
The method for heating and controlling of the embodiment of the present invention is: start (opening system power supply); Circulating sampling is also controlled and is carried out according to sampled result; Shutdown (shutdown system power supply).Described circulating sampling also comprises the following steps according to sampled result control execution step: digital control computer control device III image data (gathering the data of thermal-collecting tube temperature sensor 5, fluid level controller 14, electro connecting pressure gauge 15, TEMP instrument 16, cistern water level sensor 31, water tank temperature sensor 32); The temperature gathering when thermal-collecting tube temperature sensor 5 reach (described in reach and refer to that temperature rises to from low level, lower with) during the circulating temperature set (special case is 70～95 degrees Celsius), digital control computer control device III is controlled the first hot water circuit valve 28, the second hot water circuit valve 9, the second water injecting pump 26 startups, and the water in heat storage water tank 25 heats up by the circulation of vacuum tube heat collector I; The temperature gathering when thermal-collecting tube temperature sensor 5 higher than set preheat temperature time (special case is 95 degrees Celsius), digital control computer control device III is controlled the first hot water circuit valve 28, the second hot water circuit valve 9, the second water injecting pump 26 and is closed; When the temperature gathering when thermal-collecting tube temperature sensor 5 reaches the feed air temperature of setting (special case is 140 degrees Celsius), the a large amount of ebullition, gasifications of water in vacuum tube heat collector I become steam, digital control computer control device III is controlled air outlet valve 10 and is opened, steam is sent into steam boiler for user through electric boiler body of heater 18 and the gas and water separator 17 of frequency-conversion high-frequency electric boiler II, and digital control computer control device III is controlled injection flow valve 27 simultaneously, the second water injecting pump 26 starts; When in the electric boiler body of heater 18 that TEMP instrument 16 gathers, the temperature of steam changes and exceeds the steam temperature scope (special case is 140 degrees Celsius～170 degrees Celsius) of setting, digital control computer control device III regulates vacuum tube heat collector I flow of inlet water, constant air outlet temperature automatically by injection flow valve 27; When the pressure in the electric boiler body of heater 18 that electro connecting pressure gauge 15 gathers is less than the supply gas pressure (special case is in 0.2～0.8 MPa) of setting, digital control computer control device III is controlled the size of current that induction heater 19 starts and regulate induction heater 19, by electric boiler, heats to realize continuous air feed; The water level of the heat storage water tank 25 gathering when cistern water level sensor 31 is lower than the water tank moisturizing water level of setting, and digital control computer control device III is controlled water compensating valve 22 and opened, and heat storage water tank 25 is carried out to moisturizing; The water level of the heat storage water tank 25 gathering when cistern water level sensor 31 reaches the water tank upper limit water level of setting, and digital control computer control device III is controlled water compensating valve 22 and closed, and stops the moisturizing of heat storage water tank 25; When the temperature (from higher than 130 degrees Celsius) of thermal-collecting tube temperature sensor 5 collections drops to the water temperature below 130 degrees Celsius and the heat storage water tank 25 gathering higher than water tank temperature sensor 32, digital control computer control device III is controlled injection flow valve 27, air outlet valve 10 cuts out, the first hot water circuit valve 28, the second hot water circuit valve 9, the second water injecting pump 26 start, start at full capacity frequency-conversion high-frequency electric boiler II heating air feed, utilize solar energy by the water circulation heating in heat storage water tank 25 simultaneously; Heat storage water tank that the temperature gathering when thermal-collecting tube temperature sensor 5 gathers with water tank temperature sensor 32 25 water temperatures are when identical, and digital control computer control device III control hot water cyclesystem stops heat exchange (closing the first hot water circuit valve 28, the second hot water circuit valve 9, the second water injecting pump 26); First emptying valve 29, second emptying valve 33 are opened, and drain pump 30 is sent the water in vacuum tube heat collector I into heat storage water tank 25, realizes waste heat and makes full use of, and then close first emptying valve 29, second emptying valve 33, drain pump 30; Forward digital control computer control device III image data (data of thermal-collecting tube temperature sensor 5, fluid level controller 14, electro connecting pressure gauge 15, TEMP instrument 16, cistern water level sensor 31, water tank temperature sensor 32) step to, the circulation that goes round and begins again is carried out, and realizes unmanned management.Embodiment of the present invention circulating sampling and according to sampled result, control executory some step can executed in parallel, that condition meets carries out that step operation.
It should be noted that, Fig. 1 is the schematic diagram of the present embodiment, and actual use should, according to real needs vapor volume through calculating, be carried out assembled arrangement.In the situation that vacuum heat-collecting Area comparison is large, digital control computer control device III also can arrange a thermal-collecting tube the second temperature sensor 37, thermal-collecting tube the second temperature sensor 37 is arranged on middle part or the middle and upper part of vacuum tube heat collector I, thermal-collecting tube the second temperature sensor 37 is used for gathering the temperature of vacuum tube heat collector I middle part or middle and upper part, when within the scope of the steam temperature that the temperature of steam is being set in the electric boiler body of heater 18 that TEMP instrument 16 gathers, the temperature difference of while thermal-collecting tube temperature sensor 5 and thermal-collecting tube the second temperature sensor 37 reaches design temperature poor (20 degrees Celsius of special cases), (for example 5 degrees Celsius of injection flow valves of the every rising of temperature difference 27 strengthen lattice according to temperature extent, to carry out the adjusting of injection flow valve 27 flows, be equivalent to valve angle and strengthen 5%, 5 degrees Celsius of injection flow valves 27 of the every decline of temperature difference reduce lattice, temperature difference is constant lower than 20 degrees Celsius of injection flow valves 27), benefit is to carry out in advance the regulation and control of injection flow valve 27, guarantee the stable operation of frequency-conversion high-frequency electric boiler II, avoid Fraquent start.
The simple deformation of the technology of the present invention feature or technical scheme and combination, should think and fall into protection scope of the present invention.
Claims (7)
1. a solar energy steam collecting system, comprises vacuum tube heat collector, frequency-conversion high-frequency electric boiler, digital control computer control device and water pretreatment equipment, vacuum tube heat collector, frequency-conversion high-frequency electric boiler, water pretreatment equipment is by the mutual UNICOM of connecting pipeline, digital control computer control device and vacuum tube heat collector, water pretreatment equipment, frequency-conversion high-frequency electric boiler is all electrically connected to and controls vacuum tube heat collector, water pretreatment equipment, the operation of frequency-conversion high-frequency electric boiler, it is characterized in that: described vacuum tube heat collector is comprised of large space vacuum heat-collecting duct member and Z-type union pipe parts, large space vacuum heat-collecting duct member is comprised of large space vacuum heat collection pipe and finned U-shaped heat-exchange tube, the vacuum heat-preserving layer thickness of described large space vacuum heat collection pipe is outer the more than ten times of tube thickness of large space vacuum heat collection pipe, and described water pretreatment equipment comprises water softener, heat storage water tank, pipeline, escape pipe, hot-water circulation pipe, described digital control computer control device comprises computer controller, injection flow valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, power-supply system, the first water injecting pump, the second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank, thermal-collecting tube temperature sensor is arranged on Z-type union pipe knockdown export end, cistern water level sensor, water tank temperature installation of sensors in heat storage water tank, injection flow valve, water inlet UNICOM to the second water injecting pump delivery port of the first hot water circuit valve, the second water injecting pump water inlet and heat storage water tank UNICOM, injection flow valve, the first hot water circuit valve delivery port and vacuum tube heat collector one end UNICOM, vacuum tube heat collector one end and drain pump water inlet UNICOM, drain pump delivery port and first emptying valve water inlet UNICOM, first emptying valve delivery port and heat storage water tank UNICOM, the vacuum tube heat collector other end is provided with second emptying valve, between the vacuum tube heat collector other end and heat storage water tank, be connected with hot-water circulation pipe, the second hot water circuit valve is arranged on hot-water circulation pipe, between the vacuum tube heat collector other end and frequency-conversion high-frequency electric boiler, pass through escape pipe UNICOM, air outlet valve is installed on escape pipe, on connecting pipeline between water softener and heat storage water tank, water compensating valve is installed, the first water injecting pump is installed on the connecting pipeline between frequency-conversion high-frequency electric boiler and heat storage water tank, heater water tank is installed in heat storage water tank, computer controller and the power-supply system controller that is electrically connected to form, controller and injection flow valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, the second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank and frequency-conversion high-frequency electric boiler are all electrically connected to, in computer controller, be provided with signal amplifier, the input of signal amplifier is electrically connected to TEMP instrument, in power-supply system, be provided with frequency modulator, the output of signal amplifier is electrically connected to frequency modulator input, and the output of frequency modulator is electrically connected to induction heater.
2. solar energy steam collecting system according to claim 1, it is characterized in that: described frequency-conversion high-frequency electric boiler comprises radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP instrument, gas and water separator, electric boiler body of heater and induction heater, gas and water separator is by connecting pipeline and electric boiler body of heater UNICOM, radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP instrument, gas and water separator and induction heater are installed in electric boiler body of heater, radio-frequency generator, electro connecting pressure gauge, TEMP instrument and induction heater are all electrically connected to controller, fluid level controller is electrically connected to the first water injecting pump.
3. solar energy steam collecting system according to claim 2, it is characterized in that: digital control computer control device is also provided with thermal-collecting tube second temperature sensor, thermal-collecting tube the second temperature sensor is arranged on middle part or the middle and upper part of vacuum tube heat collector, and thermal-collecting tube the second temperature sensor is electrically connected to controller.
4. solar energy steam collecting system according to claim 2, is characterized in that: digital control computer control device is also provided with display unit, and display unit is electrically connected to controller.
5. a method for heating and controlling for the solar energy steam collecting system described in the arbitrary claim of claim 2～4, comprises start; Circulating sampling is also controlled and is carried out according to sampled result; Shutdown; It is characterized in that: described circulating sampling also comprises the following steps according to sampled result control execution step: digital control computer control device image data; When the temperature of thermal-collecting tube temperature sensor collection reaches the circulating temperature of setting, the water that digital control computer control device is controlled in heat storage water tank heats up by the circulation of vacuum tube heat collector; When the temperature of thermal-collecting tube temperature sensor collection reaches the preheat temperature of setting, the water that digital control computer control device is controlled in heat storage water tank stops circulation; When the temperature of thermal-collecting tube temperature sensor collection reaches the feed air temperature of setting, the steam that digital control computer control device is controlled in vacuum tube heat collector is sent into steam boiler for user through frequency-conversion high-frequency electric boiler; In the electric boiler body of heater of TEMP instrument collection, the temperature of steam changes while exceeding the steam temperature scope of setting, digital control computer control device flow automatic regulation, constant air outlet temperature; When the pressure in the electric boiler body of heater of electro connecting pressure gauge collection is less than the supply gas pressure of setting, digital control computer control device is controlled the size of current that induction heater starts and regulate induction heater, by electric boiler, heats to realize continuous air feed; The water level of the heat storage water tank gathering when cistern water level sensor is lower than the water tank moisturizing water level of setting, and digital control computer control device is controlled heat storage water tank is carried out to moisturizing; When the water level of the heat storage water tank of cistern water level sensor collection reaches the water tank upper limit water level of setting, digital control computer control device stops the moisturizing of heat storage water tank; When the temperature of solar energy heat collection pipe temperature sensor collection drops to the water temperature below 130 degrees Celsius and in the heat storage water tank gathering higher than water tank temperature sensor, digital control computer control device starts at full capacity frequency-conversion high-frequency electric boiler and guarantees air feed, utilizes solar energy by the water circulation heating in heat storage water tank simultaneously; When the temperature of thermal-collecting tube temperature sensor collection is identical with the heat storage water tank water temperature of water tank temperature sensor collection, digital control computer control device is sent the water in vacuum tube heat collector into heat storage water tank, realizes waste heat and makes full use of; Revolution control computer controller image data step.
6. the method for heating and controlling of solar energy steam collecting system according to claim 5, it is characterized in that: described circulating temperature is 70～95 degrees Celsius, preheat temperature is 95 degrees Celsius, feed air temperature is 140 degrees Celsius, steam temperature scope is 140 degrees Celsius～170 degrees Celsius, and supply gas pressure is between 0.2～0.8 MPa.
7. the method for heating and controlling of solar energy steam collecting system according to claim 5, it is characterized in that: in the electric boiler body of heater of TEMP instrument collection the temperature of steam within the scope of the steam temperature of setting simultaneously the temperature difference of thermal-collecting tube temperature sensor and thermal-collecting tube the second temperature sensor reach design temperature when poor, according to temperature extent, carry out the adjusting of injection flow valve flow.
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| CN102620272B true CN102620272B (en) | 2014-07-30 |
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| CN103267374B (en) * | 2013-05-23 | 2015-06-17 | 桐庐福瑞太阳能科技有限公司 | Solar heat collection and energy storage device, solar thermal electricity generation equipment and control method of solar thermal electricity generation equipment |
| CN111322767B (en) * | 2020-03-10 | 2023-05-23 | 极航节能科技(上海)有限公司 | Solar steam system |
| CN114543058B (en) * | 2022-02-25 | 2023-07-21 | 中国科学院电工研究所 | High-temperature steam generator based on solar energy |
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| US7913684B2 (en) * | 2002-02-27 | 2011-03-29 | Barry Lynn Butler | Solar heat transfer system (HTPL), high temperature pressurized loop |
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| CN2446382Y (en) * | 2000-08-09 | 2001-09-05 | 梁凤武 | Pressure automation solar electrothermal evaporation furnace |
| CN200965362Y (en) * | 2006-11-14 | 2007-10-24 | 王见昕 | A structural optimized high efficient solar energy heat collecting tube |
| CN101256029A (en) * | 2007-03-02 | 2008-09-03 | 喜春野 | Building flat type splitting solar steam heat collection apparatus |
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Effective date of registration: 20160302 Address after: 3, 201811, building 204, 6899 Liu Xiang Road, Huating Town, Shanghai, Jiading District Patentee after: Pacific Energy Technology (Shanghai) Co., Ltd. Address before: 1, unit 401, 53 Kaiyuan street, Tonglu County, Zhejiang, Hangzhou 311500 Patentee before: Wang Jinju |