CN110651649A - Roof hydrologic cycle temperature regulating system before sunlight greenhouse - Google Patents

Roof hydrologic cycle temperature regulating system before sunlight greenhouse Download PDF

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Publication number
CN110651649A
CN110651649A CN201911112663.1A CN201911112663A CN110651649A CN 110651649 A CN110651649 A CN 110651649A CN 201911112663 A CN201911112663 A CN 201911112663A CN 110651649 A CN110651649 A CN 110651649A
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CN
China
Prior art keywords
water
pipe
heat
radiator
way valve
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CN201911112663.1A
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Chinese (zh)
Inventor
刘兴安
吴晓阳
李振坤
张悦
李天来
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Shenyang Agricultural University
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Shenyang Agricultural University
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Priority to CN201911112663.1A priority Critical patent/CN110651649A/en
Publication of CN110651649A publication Critical patent/CN110651649A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/245Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/246Air-conditioning systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor

Abstract

The invention relates to a sunlight greenhouse front roof water circulation temperature adjusting system, which comprises a heat collecting device, a heat storage device and a heat radiating device, wherein the heat collecting device comprises a heat collecting water pipe, and the two ends of the heat collecting water pipe are respectively connected with a heat collecting water pipe water inlet pipe and a heat collecting water pipe water outlet pipe; the heat storage device comprises a heat preservation and storage tank, and a heat collection water pipe water injection pipe and a recovery water pipe are arranged on a heat preservation cover of the heat preservation and storage tank in a penetrating manner; the heat dissipation device comprises a radiator, the radiator is connected with a radiator water inlet pipe and a radiator water outlet pipe, and the heat collection water pipe water inlet pipe, the heat collection water pipe water injection pipe and the radiator water inlet pipe are connected through a three-way valve I; the heat collecting water pipe drain pipe, the recycling water pipe and the radiator water outlet pipe are connected through a three-way valve II. The invention stores the energy generated by solar radiation in the daytime, when the temperature in the greenhouse is reduced at night, water radiates into the greenhouse through the heat radiation device at the front bottom corner so as to achieve the purposes of heating the greenhouse and balancing the temperature difference between the front bottom corner and other positions of the greenhouse.

Description

Roof hydrologic cycle temperature regulating system before sunlight greenhouse
Technical Field
The invention relates to the technical field of solar greenhouse building design of facility agriculture, in particular to a water circulation temperature regulating system for a front roof of a solar greenhouse.
Background
At present, in most areas in winter in China, crop cultivation and production are carried out by using a sunlight greenhouse, in the crop production process, the phenomenon that the temperature in the greenhouse is too high due to too strong solar radiation in the daytime often occurs, the temperature in the greenhouse needs to be reduced through natural ventilation to reach the proper temperature required by the normal growth of crops, and the energy generated by the excessive solar radiation is wasted; the temperature is reduced at night, the temperature required by the normal growth of crops cannot be met, and energy sources such as coal and the like are often used for heating, so that energy waste and cost increase are caused; at night, the heat exchange between the front bottom corner of the greenhouse and the outside is large, the temperature drops quickly, the temperature is the lowest compared with the temperature of other parts in the greenhouse, and the growth of crops at the front bottom corner is unfavorable, so that the growth of the crops in the greenhouse is inconsistent; the front roof of the sunlight greenhouse has no heat accumulation in the daytime, so that only the covering heat preservation quilt is used for heat preservation at night, and the heat dissipation area of the part is large. Therefore, how to fully utilize solar energy as much as possible, reduce the use of conventional energy, increase the temperature of the greenhouse at night, balance the temperature difference between the front bottom corner and other parts of the greenhouse, slow down the heat dissipation of the front roof and is a difficult problem to be solved in the winter crop cultivation by using the sunlight greenhouse.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a novel sunlight greenhouse water circulation heat storage and release type temperature regulating system which fully utilizes the space at the lower chord position of the front roof of the sunlight greenhouse and the maximum specific heat capacity of water, uses water as a heat storage material, uses a water pipe fixed with the lower chord as a heat storage carrier, stores energy generated by solar radiation in the daytime, reduces the temperature in the greenhouse at night, and uses a heat dissipation device at the front bottom corner to dissipate heat into the greenhouse so as to achieve the purposes of heating the greenhouse and balancing the temperature difference between the front bottom corner and other positions of the greenhouse, and also uses a heat storage water pipe below the front roof to achieve the purpose of slowing down the heat dissipation of the front roof, thereby effectively delaying the reduction of the temperature in the greenhouse.
The purpose of the invention is realized by the following technical scheme: a water circulation temperature adjusting system for a front roof of a sunlight greenhouse comprises a heat collecting device, a heat storage device and a heat radiating device, wherein the heat collecting device comprises a heat collecting water pipe, the heat collecting water pipe is provided with a transverse heat collecting water pipe and a longitudinal heat collecting water pipe, and the transverse heat collecting water pipe and the longitudinal heat collecting water pipe are communicated; two ends of the transverse heat collecting water pipe at the lower part are respectively connected with a heat collecting water pipe inlet pipe and a heat collecting water pipe drain pipe, and the heat collecting water pipe is provided with an exhaust valve; the heat collecting water pipe is fixedly connected to the lower chord of the greenhouse framework;
the heat storage device comprises a heat preservation and storage tank, a heat preservation cover is arranged on the heat preservation and storage tank, a heat collection water pipe water injection pipe and a recovery water pipe are arranged on the heat preservation cover in a penetrating mode, and a submersible pump is connected to a water inlet of the heat collection water pipe water injection pipe; the heat-preservation heat-accumulation tank is of a downward-hollow structure, the tank body is sequentially provided with a damp-proof layer, a heat-preservation layer and a tank wall from outside to inside,
the heat dissipation device comprises a radiator, wherein the upper end and the lower end of the radiator are respectively connected with a radiator water inlet pipe and a radiator water outlet pipe, the radiator is horizontally arranged above the soil of the front roof of the greenhouse, the laying position of the radiator is slightly higher than the ground of the cultivation area, and the radiator is provided with an exhaust valve;
the water inlet of the heat collection water pipe water inlet pipe, the water outlet of the heat collection water pipe water injection pipe and the water inlet of the radiator water inlet pipe are connected through a three-way valve I; and the water outlet of the heat collecting water pipe drain pipe, the water inlet of the recycling water pipe and the water outlet of the radiator water outlet pipe are connected through a three-way valve II.
The concrete operation method of the sunlight greenhouse front roof water circulation temperature adjusting system comprises the following steps: the heat-preservation heat storage pool stores water, in the daytime, the three-way valve II is closed, the three-way valve I is adjusted to be communicated with the heat collection water pipe water inlet pipe and the heat collection water pipe water injection pipe, the radiator water inlet pipe is closed, the submersible pump is opened, and the three-way valve I is closed after water is pumped into the heat collection water pipe through the heat collection water pipe water injection pipe; the solar rays irradiate the surface of the heat collecting water pipe, water in the heat collecting water pipe is heated through heat transfer exchange, the temperature of water in the water pipe continuously rises, the three-way valve II is adjusted, the water outlet pipe of the radiator is closed, the water outlet pipe of the heat collecting water pipe and the water recovery pipe are communicated, heated hot water flows back to the heat preservation reservoir, the three-way valve II is closed after the water in the heat collecting water pipe is completely discharged, and the operation is repeated, so that the temperature of the water in the heat preservation reservoir is raised;
at night, the heat collection water pipe water inlet pipe of the three-way valve I is closed, the heat collection water pipe water injection pipe and the radiator water inlet pipe are communicated, the heat collection water pipe drain pipe is closed, the radiator water outlet pipe and the recovery water pipe are communicated, the submersible pump is opened, and hot water in the heat preservation and heat storage pool enters the radiator through the heat collection water pipe water injection pipe and the radiator water inlet pipe to form water circulation heat dissipation.
Furthermore, the heat collecting water pipe is a PVC pipe with a black outer surface.
Furthermore, the damp-proof layer of the heat-preservation and heat-storage pool is a TPO waterproof coiled material, the heat-preservation layer is a polystyrene foam board, and the pool wall is a brick cement pool wall; the heat preservation cover is a polyurethane hard foam color steel sandwich board.
Furthermore, the heat-preservation and heat-storage tank can be arranged at the front bottom corner of the greenhouse, and the volume of the heat-preservation and heat-storage tank is three to five times of the maximum water capacity of the heat collection water pipe and the radiator.
Further, the radiator is composed of a stainless steel radiating pipe or a radiating extruded pipe.
Furthermore, the sunlight greenhouse front roof water circulation temperature adjusting system is provided with a control box, a water temperature sensor I is arranged inside the heat collecting water pipe, and a water flow meter is arranged in a water discharging pipe of the heat collecting water pipe; a water temperature sensor II is arranged in the radiator; the three-way valve I and the three-way valve II are both solenoid valves; be equipped with wireless communication module in the control box, temperature inductor I, water flowmeter, temperature inductor II, three way valve I, three way valve II, immersible pump are connected to the control box, temperature inductor I, II collection temperature signal of temperature inductor feed back to the wireless communication module in the control box, and water flowmeter gathers water flow signal and feeds back to the wireless communication module in the control box, wireless communication module control three way valve I, three way valve II, the switching of immersible pump.
The operation method of the sunlight greenhouse front roof water circulation temperature adjusting system comprises the following steps: water is stored in the heat-preservation heat-storage pool, the three-way valve II is closed, the three-way valve I is adjusted to be communicated with the heat-collecting water pipe water inlet pipe and the heat-collecting water pipe water injection pipe, the radiator water inlet pipe is closed, a signal is sent out through the wireless communication module to be connected with the power supply of the submersible pump, and water is injected into the heat-collecting water pipe through the heat-collecting water pipe water injection pipe; in the daytime, sunlight irradiates the surface of the heat collection water pipe, water in the heat collection water pipe is heated through heat transfer exchange, the temperature of water in the water pipe rises continuously, when the temperature reaches 36 ℃, the water temperature sensor I transmits information to the wireless communication module in the control box, the control box sends a signal through the wireless communication module to open the three-way valve II, close the water outlet pipe of the radiator, communicate with the water discharge pipe of the heat collection water pipe and the recovery water pipe, the heated hot water flows back to the heat preservation reservoir, when the water in the heat collection water pipe flows back, when the water flow meter reaches 0.3kg/s-0.7kg/s, the information collected by the water flow meter is transmitted to the wireless communication module in the control box, after the control box receives the signal, the wireless communication module sends a signal to close the three-way valve II, the three-way valve I is adjusted, the water inlet pipe, The system automatically and circularly works when the water temperature reaches 36 ℃ again, the heated hot water flows back to the heat preservation reservoir and is injected into the heat collection water pipe, and the operation is repeated for a plurality of times, so that the water in the heat preservation and heat storage pool is heated;
at night, when the temperature of water in the radiator is lower than 16 ℃, the water temperature sensor II transmits information to a wireless communication module in the control box 25, after the control box receives a signal, the three-way valve I is controlled to communicate a heat collection water pipe water injection pipe and a radiator water inlet pipe, the heat collection water pipe water inlet pipe is closed, the three-way valve II is closed, the submersible pump is opened, hot water in the heat preservation and heat storage pool enters the radiator through the heat collection water pipe water injection pipe and the radiator water inlet pipe, when the temperature of water in the radiator is higher than 28 ℃, the water temperature sensor II transmits the acquired information to the wireless communication module in the control box, the control box closes the three-way valve I, and the power supply of; when the water temperature is lower than 16 ℃ again, the control box controls the three-way valve II, the water discharging pipe of the heat collecting water pipe is closed, the water discharging pipe and the water recycling pipe of the radiator are communicated, water in the radiator returns to the heat preservation and heat accumulation pool, the water injecting pipe of the heat collecting water pipe and the water inlet pipe of the radiator are opened and communicated at the same time, the power supply of the submersible pump is started, and the system automatically and circularly works, namely when the water in the radiator returns to the heat preservation and heat accumulation pool, hot water enters the radiator through the water.
The invention has the beneficial effects that:
(1) the space at the lower chord position of the front roof of the sunlight greenhouse is fully utilized, water is used as a heat storage material, the maximum specific heat capacity of the water is utilized, a black water pipe is used as a heat storage carrier, energy generated by solar radiation is stored, heat dissipation of the front roof at night is slowed down, and the temperature reduction in the greenhouse is effectively delayed.
(2) The invention reduces the use of conventional energy required by greenhouse heating of winter greenhouse overwintering cultivated crops, saves the operation cost of the greenhouse, and has simple structure and high effective utilization rate.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a partial schematic view of the present invention;
FIG. 3 is a schematic structural view of a thermal storage device;
FIG. 4 is a schematic view of a connection structure of a heat collecting device and a heat dissipating device;
FIG. 5 is a schematic view of a heat dissipation device;
fig. 6 is a controller connection diagram.
The names of the structures in fig. 1-6 are: the solar greenhouse comprises a heat collecting device 1, a heat storage device 2, a heat radiating device 3, a heat collecting water pipe 4, a transverse heat collecting water pipe 4-1, a longitudinal heat collecting water pipe 4-2, a heat collecting water pipe inlet pipe 4-3, a heat collecting water pipe drain pipe 4-4, a water inlet I5, a water outlet I6, a fixing ring 7, a greenhouse framework lower chord 8, a heat preservation heat storage pool 9, a moisture-proof layer 9-1, a heat preservation layer 9-2, a pool wall 9-3, a heat preservation cover 10, a heat collecting water pipe water injection pipe 11, a water outlet II 12, a water inlet II 13, a water inlet III 14, a water outlet III 15, a radiator 16, a radiator inlet pipe 17, a radiator outlet pipe 18, a water inlet IV 19, a water outlet IV 20, a three-way valve I21, a three-way valve II 22, a submersible pump 23, a recovery water pipe 24, a control box, and an exhaust valve 30.
Detailed Description
Example 1
Referring to fig. 1 to 5, the specific structure of the present embodiment is: a sunlight greenhouse front roof water circulation temperature adjusting system comprises a heat collecting device 1, a heat storage device 2 and a heat radiating device 3, wherein the heat collecting device 1 comprises a heat collecting water pipe 4, the heat collecting water pipe 4 is provided with an upper transverse heat collecting water pipe 4-1 and a lower transverse heat collecting water pipe 4-1 which are parallel, a plurality of parallel longitudinal heat collecting water pipes 4-2 are arranged between the two parallel transverse heat collecting water pipes 4-1, and the transverse heat collecting water pipes 4-1 and the longitudinal heat collecting water pipes 4-2 are communicated; two ends of the transverse heat collecting water pipe 4-1 at the lower part are respectively connected with a heat collecting water pipe inlet pipe 4-3 and a heat collecting water pipe drain pipe 4-4, the heat collecting water pipe inlet pipe 4-3 is provided with a water inlet I5, and the heat collecting water pipe drain pipe 4-4 is provided with a water outlet I6; the heat collecting water pipe 4 is provided with an exhaust valve 30; the heat collecting water pipe 4 is fixedly connected to a lower chord 8 of the greenhouse framework through a fixing ring 7, and the heat collecting water pipe 4 is a PVC pipe with a black outer surface;
the heat storage device 2 comprises a heat preservation and heat storage pool 9, a heat preservation cover 10 is arranged on the heat preservation and heat storage pool 9, a heat collection water pipe water injection pipe 11 and a recovery water pipe 24 are arranged on the heat preservation cover 10 in a penetrating mode, the heat collection water pipe water injection pipe 11 is provided with a water outlet II 12 and a water inlet II 13, and the water inlet II 13 is connected with a submersible pump 23; the heat-preservation heat-storage tank 9 is of a downward-hollow structure, the tank body sequentially comprises a moisture-proof layer 9-1, a heat-preservation layer 9-2 and a tank wall 9-3 from outside to inside, the moisture-proof layer 9-1 is a TPO waterproof coiled material, the heat-preservation layer 9-2 is a polystyrene foam board, and the tank wall 9-3 is a brick cement tank wall; the heat-insulating cover 10 is a polyurethane hard foam color steel sandwich board; the recycling water pipe 24 is provided with a water inlet III 14 and a water outlet III 15, the heat-preservation and heat-accumulation pool 5 can be arranged at the front bottom corner of the greenhouse, and the volume of the heat-preservation and water-accumulation pool 9 is 3-5 times of the maximum water capacity of the heat-collection water pipe 4 and the radiator 16.
The heat dissipation device 3 comprises a radiator 16, wherein the upper end and the lower end of the radiator 16 are respectively connected with a radiator water inlet pipe 17 and a radiator water outlet pipe 18, the radiator water inlet pipe 17 is provided with a water inlet IV 19, and the radiator water outlet pipe 18 is provided with a water outlet IV 20; the radiator 16 is horizontally arranged above the soil of the front roof of the greenhouse, the laying position is slightly higher than the ground of the cultivation area, the radiator 16 is composed of stainless steel radiating pipes or radiating extruded pipes, and the radiator 16 is provided with an exhaust valve 30;
the water inlet I5, the water outlet II 12 and the water inlet IV 19 are connected through a three-way valve I21; the water outlet I6, the water inlet III 14 and the water outlet IV 20 are connected through a three-way valve II 22.
The specific operation method of the embodiment is as follows: the heat-preservation heat-storage pool 9 stores water, in the daytime, the three-way valve II 22 is closed, the three-way valve I21 is adjusted to communicate the water inlet I5 with the water outlet II 12, the water inlet IV 19 is closed, the submersible pump 23 is opened, and the three-way valve I21 is closed after water is pumped into the heat-collection water pipe 4 through the heat-collection water pipe water injection pipe 11; the solar rays irradiate the surface of the heat collecting water pipe 4, water in the heat collecting water pipe is heated through heat transfer exchange, the temperature of the water in the water pipe continuously rises, the three-way valve II 22 is adjusted, the water outlet IV 20 is closed, the water outlet I6 and the water inlet III 14 are communicated, heated hot water flows back to the heat preservation reservoir, the three-way valve II 22 is closed after the water in the heat collecting water pipe 4 is completely discharged, and the operation is repeated, so that the temperature of the water in the heat preservation reservoir 9 is raised;
at night, the water inlet I5 of the three-way valve I21 is closed, the water outlet II 12 and the water inlet IV 19 are communicated, the water outlet I6 is closed, the water outlet IV 20 and the water inlet III 14 are communicated, the submersible pump 23 is opened, and hot water in the heat preservation and heat storage pool 9 enters the radiator 16 through the heat collection water pipe water injection pipe 11, the water outlet II 12 and the water inlet IV 19 to form water circulation heat dissipation.
Example 2
Referring to fig. 1 to 6, the specific structure of the present embodiment is: a water circulation temperature adjusting system for the front roof of a sunlight greenhouse comprises a heat collecting device 1, a heat storage device 2, a heat radiating device 3 and a control box 25; the heat collecting device 1 comprises a heat collecting water pipe 4, the heat collecting water pipe 4 is provided with a transverse heat collecting water pipe 4-1 which is parallel to the upper part and the lower part, a plurality of parallel longitudinal heat collecting water pipes 4-2 are arranged between the two parallel transverse heat collecting water pipes 4-1, and the transverse heat collecting water pipe 4-1 and the longitudinal heat collecting water pipes 4-2 are communicated; a water inlet I5 and a water outlet I6 are respectively arranged at two ends of the lower transverse heat collecting water pipe 4-1; an exhaust valve 30 is arranged at the upper right end of the heat collecting water pipe; the heat collecting water pipe 4 is fixedly connected to a lower chord 8 of the greenhouse framework through a fixing ring 7, and the heat collecting water pipe 4 is a PVC pipe with a black outer surface; a water temperature sensor I26 is arranged in the heat collecting water pipe 4, and a water flow meter 27 is arranged in the heat collecting water pipe discharge pipe 4-4;
the heat storage device 2 comprises a heat preservation and heat storage pool 9, a heat preservation cover 10 is arranged on the heat preservation and heat storage pool 9, a heat collection water pipe water injection pipe 11 and a recovery water pipe 24 are arranged on the heat preservation cover 10 in a penetrating mode, the heat collection water pipe water injection pipe 11 is provided with a water outlet II 12 and a water inlet II 13, and the water inlet II 13 is connected with a submersible pump 23; the heat-preservation heat-storage tank 9 is of a downward-hollow structure, the tank body sequentially comprises a moisture-proof layer 9-1, a heat-preservation layer 9-2 and a tank wall 9-3 from outside to inside, the moisture-proof layer 9-1 is a TPO waterproof coiled material, the heat-preservation layer 9-2 is a polystyrene foam board, and the tank wall 9-3 is a brick cement tank wall; the heat-insulating cover 10 is a polyurethane hard foam color steel sandwich board; the water recovery pipe 24 is provided with a water inlet III 14 and a water outlet III 15, and the heat-preservation heat-storage pool 5 is arranged at the front bottom corner of the greenhouse;
the heat dissipation device 3 comprises a radiator 16, wherein the upper end and the lower end of the radiator 16 are respectively connected with a radiator water inlet pipe 17 and a radiator water outlet pipe 18, the radiator water inlet pipe 17 is provided with a water inlet IV 19, and the radiator water outlet pipe 18 is provided with a water outlet IV 20; the radiator 16 is horizontally arranged above the soil of the front roof of the greenhouse, the laying position is slightly higher than the ground of the cultivation area, and the radiator 16 is composed of a stainless steel radiating pipe or a radiating extruded pipe; a water temperature sensor II 28 is arranged in the radiator 16;
the water inlet I5, the water outlet II 12 and the water inlet IV 19 are connected through a three-way valve I21; the water outlet I6, the water inlet III 14 and the water outlet IV 20 are connected through a three-way valve II 22, and in the embodiment, the three-way valve I21 and the three-way valve II 22 are both solenoid valve valves;
be equipped with wireless communication module 29 in the control box 25, control box 7 connects water temperature inductor I26, water flowmeter 27, water temperature inductor II 28, three way valve I21, three way valve II 22, immersible pump 23, during water temperature inductor I26, the temperature signal feedback of water temperature inductor II 28 gathered the wireless communication module 29 in the control box, water flowmeter 27 gathered water flow signal feedback to the wireless communication module 29 in the control box, and wireless communication module 29 controls the switching of three way valve I21, three way valve II 22, immersible pump 23.
The embodiment specifically operates as follows:
water is stored in the heat-preservation heat-storage pool 9, the three-way valve II 22 is closed, the three-way valve I21 is adjusted to communicate the water inlet I5 with the water outlet II 12, the water inlet IV 19 is closed, a signal is sent by the wireless communication module 29 to switch on the power supply of the submersible pump 23, and water is injected into the heat-collecting water pipe 4 through the heat-collecting water pipe water injection pipe 11; in the daytime, sunlight irradiates the surface of the heat collecting water pipe 4, water in the heat collecting water pipe is heated through heat transfer exchange, the temperature of water in the water pipe continuously rises, when the temperature reaches 36 ℃, the water temperature sensor I26 transmits information to the wireless communication module 29 in the control box 25, after the control box 25 receives the signal, the wireless communication module 29 sends a signal to open the three-way valve II 22, close the water outlet IV 20, communicate the water outlet I6 with the water inlet III 14, the heated hot water flows back to the heat preservation reservoir 9, after the water in the heat collecting water pipe 4 flows back, when the water flow meter reaches 0.3kg/s-0.7kg/s, the information collected by the water flow meter 27 is transmitted to the wireless communication module 29 in the control box 25, after the control box 25 receives the signal, the wireless communication module 29 sends a signal to close the three-way valve II 22, and adjust the three-way valve I21, the water inlet I5 and the water outlet II 12 are communicated, the water inlet IV 19 is closed, the submersible pump 23 is opened, water is pumped into the heat collection water pipe 4 through the heat collection water pipe water injection pipe 11, when the water temperature reaches 36 ℃ again, the system automatically and circularly works, heated hot water flows back to the heat preservation reservoir 9, meanwhile water is injected into the heat collection water pipe 4, the operation is repeated for a plurality of times, and then the water in the heat preservation and heat storage pool 9 is heated.
At night, when the temperature of water in the radiator 16 is lower than 16 ℃, the water temperature sensor II 28 transmits information to the wireless communication module 29 in the control box 25, after the control box 25 receives the signal, the three-way valve I21 is controlled, the water inlet I5 is closed, the water outlet II 12 and the water inlet IV 19 are communicated, the three-way valve II 22 is closed, the submersible pump 23 is opened, hot water in the heat-preservation heat-storage pool 9 enters the radiator 16 through the heat-collection water pipe water injection pipe 11, the water outlet II 12, the water inlet IV 19 and the radiator water inlet pipe 17, when the temperature of the water in the radiator 16 is higher than 28 ℃, the water temperature sensor II 28 transmits the acquired information to the wireless communication module 29 in the control box 25, the control box 25 closes the three-way valve I21, and the power supply of; when the water temperature is lower than 16 ℃ again, the control box 25 controls the three-way valve II 22, closes the water outlet I6, communicates the water outlet IV 20 with the water inlet III 14, enables the water in the radiator 16 to flow back to the heat preservation and heat storage tank 9, simultaneously opens the communication water outlet II 12 and the water inlet IV 19, and starts the power supply of the submersible pump 23, so that the system automatically and circularly works, namely, hot water enters the radiator 16 through the water inlet pipe 17 while the water in the radiator 16 flows back to the heat preservation and heat storage tank 9, and water circulation heat dissipation is formed.

Claims (8)

1. The utility model provides a roof hydrologic cycle temperature regulating system before sunlight greenhouse, includes heat collection device, heat accumulation device, heat abstractor, characterized by: the heat collecting device comprises a heat collecting water pipe, the heat collecting water pipe is provided with a transverse heat collecting water pipe and a longitudinal heat collecting water pipe, and the transverse heat collecting water pipe and the longitudinal heat collecting water pipe are communicated; two ends of the transverse heat collecting water pipe at the lower part are respectively connected with a heat collecting water pipe inlet pipe and a heat collecting water pipe drain pipe, and the heat collecting water pipe is provided with an exhaust valve; the heat collecting water pipe is fixedly connected to the lower chord of the greenhouse framework;
the heat storage device comprises a heat preservation and storage tank, a heat preservation cover is arranged on the heat preservation and storage tank, a heat collection water pipe water injection pipe and a recovery water pipe are arranged on the heat preservation cover in a penetrating mode, and a submersible pump is connected to a water inlet of the heat collection water pipe water injection pipe; the heat-preservation heat-accumulation tank is of a downward-hollow structure, the tank body is sequentially provided with a damp-proof layer, a heat-preservation layer and a tank wall from outside to inside,
the heat dissipation device comprises a radiator, wherein the upper end and the lower end of the radiator are respectively connected with a radiator water inlet pipe and a radiator water outlet pipe, the radiator is horizontally arranged above the soil of the front roof of the greenhouse, the laying position of the radiator is slightly higher than the ground of the cultivation area, and the radiator is provided with an exhaust valve;
the water inlet of the heat collection water pipe water inlet pipe, the water outlet of the heat collection water pipe water injection pipe and the water inlet of the radiator water inlet pipe are connected through a three-way valve I; and the water outlet of the heat collecting water pipe drain pipe, the water inlet of the recycling water pipe and the water outlet of the radiator water outlet pipe are connected through a three-way valve II.
2. A sunlight greenhouse front roof water circulation temperature regulating system as claimed in claim 1, which is characterized in that: the heat collecting water pipe is a PVC pipe with black outer surface.
3. A sunlight greenhouse front roof water circulation temperature regulating system as claimed in claim 1, which is characterized in that: the damp-proof layer of the heat-insulation heat-storage pool is a TPO waterproof coiled material, the heat-insulation layer is a polystyrene foam board, and the pool wall is a brick cement pool wall; the heat preservation cover is a polyurethane hard foam color steel sandwich board.
4. A sunlight greenhouse front roof water circulation temperature regulating system as claimed in claim 1, which is characterized in that: the heat-preservation and heat-storage tank is arranged at the front bottom corner of the greenhouse, and the volume of the heat-preservation and heat-storage tank is three to five times of the maximum water capacity of the heat-collection water pipe and the radiator.
5. A sunlight greenhouse front roof water circulation temperature regulating system as claimed in claim 1, which is characterized in that: the radiator is composed of a stainless steel radiating pipe or a radiating extruded pipe.
6. A sunlight greenhouse front roof water circulation temperature regulating system as claimed in claim 1, which is characterized in that: the solar greenhouse front roof water circulation temperature adjusting system is provided with a control box, a water temperature sensor I is arranged inside the heat collecting water pipe, and a water flow meter is arranged in a water discharging pipe of the heat collecting water pipe; a water temperature sensor II is arranged in the radiator; the three-way valve I and the three-way valve II are both solenoid valves; be equipped with wireless communication module in the control box, temperature inductor I, water flowmeter, temperature inductor II, three way valve I, three way valve II, immersible pump are connected to the control box, temperature inductor I, II collection temperature signal of temperature inductor feed back to the wireless communication module in the control box, and water flowmeter gathers water flow signal and feeds back to the wireless communication module in the control box, wireless communication module control three way valve I, three way valve II, the switching of immersible pump.
7. The operation method of the sunlight greenhouse front roof water circulation temperature adjusting system according to the claim 1 is characterized in that: the heat-preservation heat storage pool stores water, in the daytime, the three-way valve II is closed, the three-way valve I is adjusted to be communicated with the heat collection water pipe water inlet pipe and the heat collection water pipe water injection pipe, the radiator water inlet pipe is closed, the submersible pump is opened, and the three-way valve I is closed after water is pumped into the heat collection water pipe through the heat collection water pipe water injection pipe; the solar rays irradiate the surface of the heat collecting water pipe, water in the heat collecting water pipe is heated through heat transfer exchange, the temperature of water in the water pipe continuously rises, the three-way valve II is adjusted, the water outlet pipe of the radiator is closed, the water outlet pipe of the heat collecting water pipe and the water recovery pipe are communicated, heated hot water flows back to the heat preservation reservoir, the three-way valve II is closed after the water in the heat collecting water pipe is completely discharged, and the operation is repeated, so that the temperature of the water in the heat preservation reservoir is raised;
at night, the heat collection water pipe water inlet pipe of the three-way valve I is closed, the heat collection water pipe water injection pipe and the radiator water inlet pipe are communicated, the heat collection water pipe drain pipe is closed, the radiator water outlet pipe and the recovery water pipe are communicated, the submersible pump is opened, and hot water in the heat preservation and heat storage pool enters the radiator through the heat collection water pipe water injection pipe and the radiator water inlet pipe to form water circulation heat dissipation.
8. The operation method of the sunlight greenhouse front roof water circulation temperature adjusting system according to the claim 6 is characterized in that: water is stored in the heat-preservation heat-storage pool, the three-way valve II is closed, the three-way valve I is adjusted to be communicated with the heat-collecting water pipe water inlet pipe and the heat-collecting water pipe water injection pipe, the radiator water inlet pipe is closed, a signal is sent out through the wireless communication module to be connected with the power supply of the submersible pump, and water is injected into the heat-collecting water pipe through the heat-collecting water pipe water injection pipe; in the daytime, sunlight irradiates the surface of the heat collection water pipe, water in the heat collection water pipe is heated through heat transfer exchange, the temperature of water in the water pipe rises continuously, when the temperature reaches 36 ℃, the water temperature sensor I transmits information to the wireless communication module in the control box, the control box sends a signal through the wireless communication module to open the three-way valve II, close the water outlet pipe of the radiator, communicate with the water discharge pipe of the heat collection water pipe and the recovery water pipe, the heated hot water flows back to the heat preservation reservoir, when the water in the heat collection water pipe flows back, when the water flow meter reaches 0.3kg/s-0.7kg/s, the information collected by the water flow meter is transmitted to the wireless communication module in the control box, after the control box receives the signal, the wireless communication module sends a signal to close the three-way valve II, the three-way valve I is adjusted, the water inlet pipe, The system automatically and circularly works when the water temperature reaches 36 ℃ again, the heated hot water flows back to the heat preservation reservoir and is injected into the heat collection water pipe, and the operation is repeated for a plurality of times, so that the water in the heat preservation and heat storage pool is heated;
at night, when the temperature of water in the radiator is lower than 16 ℃, the water temperature sensor II transmits information to a wireless communication module in the control box 25, after the control box receives a signal, the three-way valve I is controlled to communicate a heat collection water pipe water injection pipe and a radiator water inlet pipe, the heat collection water pipe water inlet pipe is closed, the three-way valve II is closed, the submersible pump is opened, hot water in the heat preservation and heat storage pool enters the radiator through the heat collection water pipe water injection pipe and the radiator water inlet pipe, when the temperature of water in the radiator is higher than 28 ℃, the water temperature sensor II transmits the acquired information to the wireless communication module in the control box, the control box closes the three-way valve I, and the power supply of; when the water temperature is lower than 16 ℃ again, the control box controls the three-way valve II, the water discharging pipe of the heat collecting water pipe is closed, the water discharging pipe and the water recycling pipe of the radiator are communicated, water in the radiator returns to the heat preservation and heat accumulation pool, the water injecting pipe of the heat collecting water pipe and the water inlet pipe of the radiator are opened and communicated at the same time, the power supply of the submersible pump is started, and the system automatically and circularly works, namely when the water in the radiator returns to the heat preservation and heat accumulation pool, hot water enters the radiator through the water.
CN201911112663.1A 2019-11-14 2019-11-14 Roof hydrologic cycle temperature regulating system before sunlight greenhouse Pending CN110651649A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111309072A (en) * 2020-02-26 2020-06-19 中国农业大学 Sunlight greenhouse temperature control method based on surface cooler-fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111309072A (en) * 2020-02-26 2020-06-19 中国农业大学 Sunlight greenhouse temperature control method based on surface cooler-fan

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