CN110553303B - Combined heat supply device of ground source heat pump and renewable energy source - Google Patents
Combined heat supply device of ground source heat pump and renewable energy source Download PDFInfo
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- CN110553303B CN110553303B CN201910973838.1A CN201910973838A CN110553303B CN 110553303 B CN110553303 B CN 110553303B CN 201910973838 A CN201910973838 A CN 201910973838A CN 110553303 B CN110553303 B CN 110553303B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
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- 239000007788 liquid Substances 0.000 claims description 28
- 238000005507 spraying Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 10
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 21
- 239000003570 air Substances 0.000 description 15
- 238000005338 heat storage Methods 0.000 description 7
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 239000003673 groundwater Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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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
- F24D12/00—Other central heating systems
- F24D12/02—Other central heating systems having more than one heat source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
- F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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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
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a ground source heat pump and renewable energy source combined heat supply device which is characterized by comprising a renewable energy source power plant, a grid-connected system, an electric boiler, a ground source heat pump unit and a spray tower heat exchanger, wherein the renewable energy source power plant, the ground source heat pump unit and the electric boiler are electrically connected with the grid-connected system, the grid-connected system is electrically connected with a national power grid, the output end of the ground source heat pump unit is communicated with the input end of the spray tower heat exchanger, the output end of the electric boiler is communicated with the input end of the spray tower heat exchanger, and the output end of the spray tower heat exchanger is communicated with the input end of a municipal heating pipeline; the solar energy water heater comprises a spray tower heat exchanger, a condensing solar energy water heater and a steam condensing mechanism, wherein the output end of the electric boiler and the output end of the condensing solar energy water heater are communicated with the input end of the spray tower heat exchanger through the steam condensing mechanism; the combined heat supply device can fully utilize renewable energy sources to supply heat, and has high heat exchange efficiency.
Description
Technical Field
The invention relates to the field of heating devices, in particular to a ground source heat pump and renewable energy source combined heating device.
Background
In recent years, due to the requirement of environmental protection, the heating energy sources in various places in the north of China all take the way of modifying the natural gas by using coal, but due to the problems of short time, heavy tasks, insufficient domestic natural gas storage capacity and the like, the phenomenon of serious shortage of the heating energy sources and the like occurs in many places, and residents are saturated and stopped. In order to solve the problems of winter heating and shortage of non-renewable energy sources, a need for searching for a mature novel renewable clean energy source is urgent, wherein the novel renewable clean energy source comprises collection, storage, utilization and the like of new energy sources, and the novel renewable clean energy source is a complete and rigorous system.
The small household solar water heater system and other similar solar heat storage devices which are popular at present are used for carrying out short-term heat storage on solar heat supply. Because the solar energy density on the earth surface is low, and the characteristics of season and day-night alternation are present, the short-term heat storage system for solar energy heat supply inevitably has great instability, so that the solar energy utilization efficiency is low.
The shallow layer of the ground surface is a huge solar heat collector, is not limited by regions, resources and the like, and is truly extensive and ubiquitous. This nearly unlimited renewable energy source stored in the shallow earth's surface makes the earth a form of clean renewable energy source. The temperature of the geothermal energy or the surface shallow geothermal resource is relatively stable throughout the year, the temperature of the geothermal energy or the surface shallow geothermal resource is higher than the temperature of the ambient air in winter, and the geothermal energy or the surface shallow geothermal resource is lower than the temperature of the ambient air in summer, so that the geothermal energy or the surface shallow geothermal resource is a good heat pump heat source and an air conditioner cold source, and the temperature characteristic ensures that the running efficiency of the geothermal energy heat pump is 40% higher than that of a traditional air conditioner system, thereby saving energy and running cost by about 40%. In addition, the characteristic of constant geothermal energy temperature ensures that the heat pump unit operates more reliably and stably, and ensures the high efficiency and economy of the system.
How to utilize solar energy accumulated in the surface shallow layer for heating becomes a problem today.
Chinese patent CN109654581a discloses a composite heating system based on cross-season heat accumulation of confined aquifers, which combines the cross-season heat accumulation heating and heat supply technology with the underground aquifer recharging and energy storage technology, uses an original aquifer which cannot be continuously exploited into groundwater due to the decrease of the underground water level as an energy storage device, and rebuilds an in-situ heat well into a heat storage well and a heat collection well; recharging the heated water into a heat storage well after heating the water by solar energy and other energy sources in non-heating seasons, and preserving heat and storing the water by virtue of the characteristics of low flow rate and small heat loss of an underground aquifer; and in the heating season, the stored hot water is extracted from the underground aquifer through the heating well, and the hot water is respectively transported to each heating user by a heating unit.
The heating system disclosed in this patent utilizes heat storage wells for heat supply, but in cold areas where the water temperature in the heat storage wells is low, the solar energy stored in the shallow earth is insufficient to provide sufficient heat in winter, and it is also necessary to combine with other renewable energy sources to heat cold water together, thereby producing hot water sufficient to supply municipal heating pipes.
Disclosure of Invention
The invention aims to provide a ground source heat pump and renewable energy source combined heat supply device which can fully utilize renewable energy sources for heat supply and has high heat exchange efficiency.
To achieve the purpose, the invention adopts the following technical scheme: the utility model provides a ground source heat pump and renewable energy source combined heat supply device, including renewable energy source power plant, grid-connected system, electric boiler, ground source heat pump unit and spray tower heat exchanger, renewable energy source power plant, ground source heat pump unit and electric boiler all are connected with grid-connected system electricity, grid-connected system is connected with the state electric wire netting electricity, ground source heat pump unit's output and spray tower heat exchanger's input intercommunication, electric boiler's output and spray tower heat exchanger's input intercommunication, spray tower heat exchanger's output and municipal heating pipeline's input intercommunication.
As a preferred scheme of the ground source heat pump and renewable energy source combined heat supply device, the device also comprises a concentrating solar water heater and a steam converging mechanism, wherein the renewable energy source power plant comprises a tidal power plant and a wind power plant, the tidal power plant and the wind power plant are electrically connected with a grid-connected system, and the output end of an electric boiler and the output end of the concentrating solar water heater are communicated with the input end of a spray tower heat exchanger through the steam converging mechanism.
As a preferable scheme of the ground source heat pump and renewable energy source combined heat supply device, the renewable energy source power plant comprises a tidal power plant, a wind power plant and a photovoltaic power plant, and the tidal power plant, the wind power plant and the photovoltaic power plant are electrically connected with a grid-connected system.
As a preferable scheme of the ground source heat pump and renewable energy source combined heat supply device, the spray tower heat exchanger comprises a tower body, a liquid spray mechanism, a steam spray mechanism and a turbo-charging mechanism, wherein the liquid spray mechanism is fixedly arranged at the upper end of the interior of the tower body, the steam spray mechanism is fixedly arranged at the lower end of the interior of the tower body, the input ends of the liquid spray mechanism and the steam spray mechanism extend to the outer side of the tower body through a shell of the tower body, the input end of the liquid spray mechanism is communicated with the output end of a ground source heat pump unit, and the input end of the steam spray mechanism is communicated with the input ends of an electric boiler and a concentrating solar water heater through a steam converging mechanism; the output end of the liquid spraying mechanism is vertically downwards arranged, the output end of the steam spraying mechanism is vertically upwards arranged, and the bottom of the tower body is provided with a water outlet pipe communicated with the municipal heating pipeline.
As a preferred scheme of the ground source heat pump and renewable energy source combined heat supply device, the device further comprises an industrial computer, the tower body further comprises a regulating valve and a sixth stop valve, a temperature sensor is arranged in the water outlet pipe, the liquid spraying mechanism is communicated with the output end of the ground source heat pump unit through the regulating valve, the water outlet pipe is communicated with a municipal heating pipeline through the sixth stop valve, and the temperature sensor, the regulating valve and the sixth stop valve are all electrically connected with the industrial computer.
As a preferred scheme of the ground source heat pump and renewable energy source combined heat supply device, the liquid spraying mechanism comprises a snake-shaped pipeline penetrating through a tower body shell and coiled inside the tower body, a plurality of spray head mounting pipes communicated to the inside of the snake-shaped pipeline are arranged at the bottom of the snake-shaped pipeline, and each spray head mounting pipe is provided with a warm water spray head with an output end extending vertically downwards.
As a preferred scheme of ground source heat pump and renewable energy source combined heat supply device, steam injection mechanism is including running through the body of the tower casing and extending to the inside main gas line of body of the tower, main gas line's output is vertical upwards to be set up, main gas line's outside is provided with the annular pipeline coaxial with main gas line output, be provided with the outside branch gas line that extends and communicates main gas line and annular pipeline of a plurality of levels on the main gas line, branch gas line encircles the axis equipartition of main gas line output, be provided with a plurality of shower nozzle mounting tubes that communicate to annular pipeline inside on the annular pipeline, all install the steam shower nozzle that the output vertically upwards extends on every shower nozzle mounting tube.
As a preferred scheme of the ground source heat pump and renewable energy source combined heat supply device, the spray tower heat exchanger further comprises a turbocharging mechanism, the turbocharging mechanism comprises a servo motor and a turbofan, the servo motor is fixedly arranged at the top end of the tower body, the turbofan is arranged at the top end of the inside of the tower body, and the output end of the servo motor vertically penetrates through the shell of the tower body downwards and is fixedly connected with the turbofan.
As a preferable scheme of the ground source heat pump and renewable energy source combined heat supply device, the steam converging mechanism comprises a gas collecting bar, a first stop valve and a second stop valve, the output end of the electric boiler is communicated with the gas collecting bar through the first stop valve, the output end of the concentrating solar water heater is communicated with the gas collecting bar through the second stop valve, and the gas collecting bar is communicated with the input end of the steam injection mechanism.
As a preferred scheme of the ground source heat pump and renewable energy source combined heat supply device, the steam convergence mechanism further comprises a mechanical booster pump, a third stop valve, a fourth stop valve and a fifth stop valve, the output end of the electric boiler is communicated with the input end of the mechanical booster pump through the third stop valve, the output end of the concentrating solar water heater is communicated with the input end of the mechanical booster pump through the fourth stop valve, the output end of the mechanical booster pump is communicated with a gas collecting bar through the fifth stop valve, and the mechanical booster pump is electrically connected with a national power grid.
Compared with the prior art, the invention has the beneficial effects that: the renewable energy power plant generates power and supplies power to the grid-connected system; the grid-connected system is used for inverting, stabilizing, boosting, grid-connected and switching circuits, the grid-connected system preferentially supplies the power of the renewable energy power plant to the electric boiler and the ground source heat pump unit, the redundant part is transmitted to the national power grid, and the grid-connected system transmits the power of the national power grid to the electric boiler and the ground source heat pump unit under the condition that the power generation of the renewable energy power plant is insufficient; the ground source heat pump unit heats cold water into warm water and conveys the warm water to the spray tower heat exchanger; the electric boiler heats cold water into water vapor and conveys the water vapor to the spray tower heat exchanger; the warm water and the water vapor are mixed into hot water in the spray tower heat exchanger and then delivered to the municipal heating pipeline. The combined heat supply device fully utilizes renewable energy sources for heat supply.
Drawings
FIG. 1 is a block diagram of a system in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of a system according to a second embodiment of the combined heat and power plant of the present invention;
FIG. 3 is a block diagram of a vapor convergence fabric system according to an embodiment of the combined heat and power plant of the present invention;
FIG. 4 is a schematic diagram of a front view of a heat exchanger of a spray tower according to one or two embodiments of a combined geothermal heat pump and renewable energy heating apparatus of the present invention;
FIG. 5 is a schematic diagram of a side view of a heat exchanger of a spray tower according to one or two embodiments of a combined geothermal heat pump and renewable energy heating apparatus of the present invention;
FIG. 6 is a schematic view of the cross-sectional structure in the direction A-A of FIG. 5;
FIG. 7 is a schematic view of the cross-sectional structure in the B-B direction of FIG. 5;
FIG. 8 is a schematic view of the cross-sectional structure in the C-C direction of FIG. 5;
FIG. 9 is a schematic perspective view of FIG. 8;
FIG. 10 is an exploded view of a liquid spray mechanism according to one or both embodiments of a combined geothermal heat pump and renewable energy heating apparatus of the present invention;
FIG. 11 is an exploded view of a vapor injection mechanism according to one or both embodiments of a combined geothermal heat pump and renewable energy heating apparatus of the present invention;
in the figure:
1. a tower body; 1a, a water outlet pipe; 1b, regulating valve; 1c, a sixth stop valve;
2. a liquid spraying mechanism; 2a, serpentine tubing; 2b, a spray head mounting pipe; 2c, a warm water spray head;
3. a steam injection mechanism; 3a, a main gas pipeline; 3b, an annular pipeline; 3c, branch gas pipeline; 3d, a spray head mounting pipe; 3e, a steam nozzle;
4. a turbo-charging mechanism; 4a, a servo motor; 4b, a turbofan.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1 and 3 to 11, the ground source heat pump and renewable energy source combined heat supply device comprises a renewable energy source power plant, a grid-connected system, an electric boiler, a ground source heat pump unit and a spray tower heat exchanger, wherein the renewable energy source power plant, the ground source heat pump unit and the electric boiler are electrically connected with the grid-connected system, the grid-connected system is electrically connected with a national power grid, the output end of the ground source heat pump unit is communicated with the input end of the spray tower heat exchanger, the output end of the electric boiler is communicated with the input end of the spray tower heat exchanger, and the output end of the spray tower heat exchanger is communicated with the input end of a municipal heating pipeline.
The renewable energy power plant generates power and supplies power to the grid-connected system; the grid-connected system is used for inverting, stabilizing, boosting, grid-connected and switching circuits, the grid-connected system preferentially supplies the power of the renewable energy power plant to the electric boiler and the ground source heat pump unit, the redundant part is transmitted to the national power grid, and the grid-connected system transmits the power of the national power grid to the electric boiler and the ground source heat pump unit under the condition that the power generation of the renewable energy power plant is insufficient;
the ground source heat pump unit heats cold water into warm water and conveys the warm water to the spray tower heat exchanger; the electric boiler heats cold water into water vapor and conveys the water vapor to the spray tower heat exchanger; the warm water and the water vapor are mixed into hot water in the spray tower heat exchanger and then delivered to the municipal heating pipeline.
The system also comprises a concentrating solar water heater and a steam converging mechanism, the renewable energy power plant comprises a tidal power plant and a wind power plant, the tidal power plant and the wind power plant are electrically connected with a grid-connected system, the output end of the electric boiler and the output end of the concentrating solar water heater are communicated with the input end of the spray tower heat exchanger through the steam converging mechanism.
In the region with abundant fresh water resources and solar energy resources, a concentrated solar water heater can be additionally arranged, an electric boiler and the concentrated solar water heater directly heat cold water into water vapor, and the water vapor is conveyed to a spray tower heat exchanger for heat exchange through a vapor convergence mechanism;
the concentrating solar water heater is a trough solar heat collector, preferably an industrial steam opening 3000mm heat collector developed by Chengdu solar electric power company can be adopted, the outlet temperature of a heat collection field of the heat collector is reduced by at least 150 degrees compared with the field of photo-thermal power generation, and the heat collection field can be directly used for the heat supply system.
The spray tower heat exchanger comprises a tower body 1, a liquid spray mechanism 2, a steam spray mechanism 3 and a turbo-charging mechanism 4, wherein the liquid spray mechanism 2 is fixedly arranged at the upper end inside the tower body 1, the steam spray mechanism 3 is fixedly arranged at the lower end inside the tower body 1, the input ends of the liquid spray mechanism 2 and the steam spray mechanism 3 penetrate through the shell of the tower body 1 and extend to the outer side of the tower body 1, the input end of the liquid spray mechanism 2 is communicated with the output end of a ground source heat pump unit, and the input end of the steam spray mechanism 3 is communicated with the input ends of an electric boiler and a concentrating solar water heater through a steam converging mechanism; the output end of the liquid spraying mechanism 2 is vertically downwards, the output end of the steam spraying mechanism 3 is vertically upwards, and the bottom of the tower body 1 is provided with a water outlet pipe 1a communicated with a municipal heating pipeline.
The ground source heat pump unit conveys warm water to the liquid spray mechanism 2, the electric boiler and the concentrating solar water heater convey water vapor to the vapor injection mechanism 3 through the vapor converging mechanism, the liquid spray mechanism 2 sprays the warm water downwards, the vapor injection mechanism 3 sprays the water vapor upwards, the warm water and the water vapor are mixed into hot water in the spray tower heat exchanger, then the hot water flows out through the water outlet pipe 1a and is conveyed to the municipal heating pipeline, and the heat exchange efficiency of the spray tower heat exchanger exceeds 90%.
The utility model provides a liquid spraying mechanism 2, including the industrial computer, body of the tower 1 still includes governing valve 1b and sixth stop valve 1c, and outlet pipe 1a internally mounted has temperature sensor, and liquid spraying mechanism 2 communicates with ground source heat pump unit's output through governing valve 1b, and outlet pipe 1a communicates with municipal heating pipeline through sixth stop valve 1c, and temperature sensor, governing valve 1b, sixth stop valve 1c are all connected with the industrial computer electricity.
The temperature sensor is a PT100 waterproof probe, senses the water temperature in the water outlet pipe 1a in real time and sends the water temperature to the industrial computer, and the industrial computer adjusts the regulating valve 1b and the sixth stop valve 1c according to the water temperature of the water outlet;
when the temperature of the discharged water is lower than the demand, the industrial computer sends a signal to the regulating valve 1b and the sixth stop valve 1c, the sixth stop valve 1c is immediately closed, the regulating valve 1b reduces the water yield of the warm water, and when the temperature of the water in the water outlet pipe 1a reaches the discharge demand, the sixth stop valve 1c is opened again and supplies the hot water to the municipal heating pipeline;
when the temperature of the discharged water is higher than the demand, the industrial computer sends a signal to the regulating valve 1b and the sixth stop valve 1c, the sixth stop valve 1c is immediately closed, the regulating valve 1b increases the water yield of the warm water, and the sixth stop valve 1c is opened again and supplies the hot water to the municipal heating pipeline until the temperature of the water inside the water outlet pipe 1a reaches the discharge demand.
The liquid spraying mechanism 2 comprises a serpentine pipeline 2a penetrating through a shell of the tower body 1 and coiled inside the tower body 1, a plurality of spray head mounting pipes 2b communicated to the inside of the serpentine pipeline 2a are arranged at the bottom of the serpentine pipeline 2a, and each spray head mounting pipe 2b is provided with a warm water spray head 2c with an output end extending vertically downwards. The ground source heat pump unit delivers warm water to the serpentine circuit 2a, and the warm water flows into each of the head mounting tubes 2b along the serpentine circuit 2a and finally is sprayed downward through each of the warm water heads 2c.
The steam injection mechanism 3 comprises a main air pipeline 3a penetrating through a shell of the tower body 1 and extending into the tower body 1, an output end of the main air pipeline 3a is vertically upwards arranged, an annular pipeline 3b coaxial with the output end of the main air pipeline 3a is arranged on the outer side of the main air pipeline 3a, a plurality of branch air pipelines 3c which extend horizontally outwards and are communicated with the main air pipeline 3a and the annular pipeline 3b are arranged on the main air pipeline 3a, the branch air pipelines 3c are uniformly distributed around an axis of the output end of the main air pipeline 3a, a plurality of spray head mounting pipes 3d which are communicated to the inner part of the annular pipeline 3b are arranged on the annular pipeline 3b, and steam spray heads 3e with vertically upwards extending output ends are all arranged on each spray head mounting pipe 3 d.
The steam convergence mechanism conveys the steam to the main air pipeline 3a, the main air pipeline 3a uniformly conveys the steam to the inside of the annular pipeline 3b through the plurality of branch air pipelines 3c, the annular pipeline 3b conveys the steam to the steam nozzle 3e through the nozzle mounting pipe 3d, and the steam finally is sprayed upwards vertically through the steam nozzle 3e.
The spray tower heat exchanger further comprises a turbocharging mechanism 4, the turbocharging mechanism 4 comprises a servo motor 4a and a turbofan 4b, the servo motor 4a is fixedly arranged at the top end of the tower body 1, the turbofan 4b is arranged at the top end of the tower body 1, and the output end of the servo motor 4a vertically penetrates through the shell of the tower body 1 downwards and is fixedly connected with the turbofan 4 b.
The servo motor 4a works to drive the turbofan 4b to rotate, and the turbofan 4b sprays the water vapor which escapes to the top end inside the tower body 1 downwards, so that the water vapor cannot be converged to the top end of the shell of the tower body 1 to be condensed, and the heat exchange efficiency inside the tower body 1 is improved.
The steam converging mechanism comprises a converging gas bar, a first stop valve and a second stop valve, the output end of the electric boiler is communicated with the converging gas bar through the first stop valve, the output end of the concentrating solar water heater is communicated with the converging gas bar through the second stop valve, and the converging gas bar is communicated with the input end of the steam jet mechanism (3).
The electric boiler and the first stop valve can be closed and the second stop valve can be closed at night when the electric boiler is not needed to generate steam because the electric boiler and the condensing solar water heater generate steam which is gathered through the air collecting bar and then supplied to the steam injection mechanism 3.
The steam convergence mechanism further comprises a mechanical booster pump, a third stop valve, a fourth stop valve and a fifth stop valve, the output end of the electric boiler is communicated with the input end of the mechanical booster pump through the third stop valve, the output end of the concentrating solar water heater is communicated with the input end of the mechanical booster pump through the fourth stop valve, the output end of the mechanical booster pump is communicated with the gas collecting row through the fifth stop valve, and the mechanical booster pump is electrically connected with the national grid.
When the pressure of the steam supplied by the electric boiler or the concentrating solar water heater is insufficient, the first stop valve and the second stop valve are closed, the third stop valve, the fourth stop valve and the fifth stop valve are opened, and the steam supplied by the electric boiler or the concentrating solar water heater is pressurized by the mechanical booster pump and then is transmitted to the steam injection mechanism 3, so that the steam injection mechanism 3 can always obtain the input of high-pressure steam.
The working principle of the invention is as follows: the renewable energy power plant generates power and supplies power to the grid-connected system; the grid-connected system is used for inverting, stabilizing, boosting, grid-connected and switching circuits, the grid-connected system preferentially supplies the power of the renewable energy power plant to the electric boiler and the ground source heat pump unit, the redundant part is transmitted to the national power grid, and the grid-connected system transmits the power of the national power grid to the electric boiler and the ground source heat pump unit under the condition that the power generation of the renewable energy power plant is insufficient; the ground source heat pump unit conveys warm water to the liquid spraying mechanism 2;
the electric boiler and the first stop valve can be closed when the electric boiler is not needed to generate steam, and the second stop valve can be closed at night; when the pressure of the steam supplied by the electric boiler or the concentrating solar water heater is insufficient, the first stop valve and the second stop valve are closed, the third stop valve, the fourth stop valve and the fifth stop valve are opened, and the steam supplied by the electric boiler or the concentrating solar water heater is transmitted to the steam injection mechanism 3 after being pressurized by the mechanical booster pump, so that the steam injection mechanism 3 can always obtain the input of high-pressure steam;
the liquid spraying mechanism 2 sprays warm water downwards, the steam spraying mechanism 3 sprays water vapor upwards, the warm water and the water vapor are mixed into hot water in the spray tower heat exchanger, and then the hot water flows out through the water outlet pipe 1a and is conveyed to a municipal heating pipeline.
Example two
Referring to fig. 2, a combined geothermal pump and renewable energy heating apparatus is different from the first embodiment in that renewable energy power plants include tidal power plants, wind power plants, and photovoltaic power plants, which are all electrically connected to a grid-connected system.
In the areas with abundant solar energy resources and insufficient fresh water resources, the concentrating solar water heater is canceled, the photovoltaic power plant is additionally arranged, and the solar energy is used for supplying power to the ground source heat pump unit and the electric boiler, so that renewable energy sources are further utilized.
It should be understood that the above description is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be apparent to those skilled in the art that various modifications, equivalents, variations, and the like can be made to the present invention. However, such modifications are intended to fall within the scope of the present invention without departing from the spirit of the present invention. In addition, some terms used in the specification and claims of the present application are not limiting, but are merely for convenience of description.
Claims (5)
1. The ground source heat pump and renewable energy source combined heat supply device is characterized by comprising a renewable energy source power plant, a grid-connected system, an electric boiler, a ground source heat pump unit and a spray tower heat exchanger, wherein the renewable energy source power plant, the ground source heat pump unit and the electric boiler are electrically connected with the grid-connected system, the grid-connected system is electrically connected with a national power grid, the output end of the ground source heat pump unit is communicated with the input end of the spray tower heat exchanger, the output end of the electric boiler is communicated with the input end of the spray tower heat exchanger, and the output end of the spray tower heat exchanger is communicated with the input end of a municipal heating pipeline;
the system comprises a solar energy power plant, a solar energy power plant and a solar energy power plant, wherein the solar energy power plant comprises a tidal power plant and a wind power plant;
the spray tower heat exchanger comprises a tower body (1), a liquid spray mechanism (2), a steam spray mechanism (3) and a turbo-charging mechanism (4), wherein the liquid spray mechanism (2) is fixedly arranged at the upper end inside the tower body (1), the steam spray mechanism (3) is fixedly arranged at the lower end inside the tower body (1), the input ends of the liquid spray mechanism (2) and the steam spray mechanism (3) penetrate through the shell of the tower body (1) and extend to the outer side of the tower body (1), the input end of the liquid spray mechanism (2) is communicated with the output end of a ground source heat pump unit, and the input end of the steam spray mechanism (3) is communicated with the input ends of an electric boiler and a concentrating solar water heater through a steam converging mechanism; the output end of the liquid spraying mechanism (2) is vertically downwards, the output end of the steam spraying mechanism (3) is vertically upwards arranged, the bottom of the tower body (1) is provided with a water outlet pipe (1 a) communicated with a municipal heating pipeline, and the turbocharging mechanism (4) is arranged at the top of the tower body (1);
the turbocharging mechanism (4) comprises a servo motor (4 a) and a turbofan (4 b), wherein the servo motor (4 a) is fixedly arranged at the top end of the tower body (1), the turbofan (4 b) is arranged at the top end of the interior of the tower body (1), and the output end of the servo motor (4 a) vertically penetrates through the shell of the tower body (1) downwards and is fixedly connected with the turbofan (4 b);
the steam converging mechanism comprises a converging gas bar, a first stop valve and a second stop valve, the output end of the electric boiler is communicated with the converging gas bar through the first stop valve, the output end of the concentrating solar water heater is communicated with the converging gas bar through the second stop valve, and the converging gas bar is communicated with the input end of the steam jet mechanism (3);
the steam convergence mechanism further comprises a mechanical booster pump, a third stop valve, a fourth stop valve and a fifth stop valve, the output end of the electric boiler is communicated with the input end of the mechanical booster pump through the third stop valve, the output end of the concentrating solar water heater is communicated with the input end of the mechanical booster pump through the fourth stop valve, the output end of the mechanical booster pump is communicated with the gas collecting row through the fifth stop valve, and the mechanical booster pump is electrically connected with the national grid.
2. The combined geothermal heat pump and renewable energy heat supply device according to claim 1, further comprising an industrial computer, wherein the tower body (1) further comprises a regulating valve (1 b) and a sixth stop valve (1 c), a temperature sensor is installed in the water outlet pipe (1 a), the liquid spraying mechanism (2) is communicated with the output end of the geothermal heat pump unit through the regulating valve (1 b), the water outlet pipe (1 a) is communicated with a municipal heating pipeline through the sixth stop valve (1 c), and the temperature sensor, the regulating valve (1 b) and the sixth stop valve (1 c) are all electrically connected with the industrial computer.
3. The geothermal heat pump and renewable energy combined heat supply device according to claim 1, wherein the liquid spraying mechanism (2) comprises a serpentine pipeline (2 a) penetrating through a shell of the tower body (1) and coiled inside the tower body (1), a plurality of spray head mounting pipes (2 b) communicated to the inside of the serpentine pipeline (2 a) are arranged at the bottom of the serpentine pipeline (2 a), and each spray head mounting pipe (2 b) is provided with a warm water spray head (2 c) with an output end extending vertically downwards.
4. The combined geothermal pump and renewable energy heating device according to claim 1, wherein the steam injection mechanism (3) comprises a main air pipeline (3 a) penetrating through a shell of the tower body (1) and extending into the tower body (1), an output end of the main air pipeline (3 a) is vertically upwards arranged, an annular pipeline (3 b) coaxial with the output end of the main air pipeline (3 a) is arranged on the outer side of the main air pipeline (3 a), a plurality of branch air pipelines (3 c) which horizontally extend outwards and are communicated with the main air pipeline (3 a) and the annular pipeline (3 b) are arranged on the main air pipeline (3 a), the branch air pipelines (3 c) are uniformly distributed around an axis of the output end of the main air pipeline (3 a), a plurality of spray head mounting pipes (3 d) which are communicated into the annular pipeline (3 b) are arranged on the annular pipeline (3 b), and steam spray heads (3 e) with vertically upwards extending output ends are arranged on each spray head mounting pipe (3 d).
5. A combined geothermal heat pump and renewable energy heating apparatus according to claim 1 wherein the renewable energy power plant further comprises a photovoltaic power plant electrically connected to the grid-tie system.
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| CN202489087U (en) * | 2012-03-07 | 2012-10-17 | 福建省水产研究所 | Low-carbon type novel energy aquatic product cultivate device |
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