CN115843578A - Greenhouse soil seasonal heat storage and supply system and solar photo-thermal energy storage and supply greenhouse - Google Patents
Greenhouse soil seasonal heat storage and supply system and solar photo-thermal energy storage and supply greenhouse Download PDFInfo
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- CN115843578A CN115843578A CN202211583198.1A CN202211583198A CN115843578A CN 115843578 A CN115843578 A CN 115843578A CN 202211583198 A CN202211583198 A CN 202211583198A CN 115843578 A CN115843578 A CN 115843578A
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Abstract
The invention provides a greenhouse soil seasonal heat storage and supply system and a solar photo-thermal energy storage and supply greenhouse, relates to the technical field of greenhouses, and solves the problems that in the prior art, the intermittent shortage of solar energy exists, a heating mode used in the greenhouse consumes a large amount of energy when heating, and the ground temperature requirement required by crop growth cannot be met. The system comprises a seasonal heat storage unit, a solar heat collection unit and an air circulation control unit, wherein the seasonal heat storage unit is arranged in a soil layer of the greenhouse and used for seasonal heat storage so as to exchange heat with soil in the soil layer of the greenhouse; the solar heat collection unit is arranged outside the greenhouse and used for converting solar energy into heat energy, and the solar heat collection unit is connected with the seasonal heat storage unit to form a heat exchange circulation loop so that the seasonal heat storage unit can store the heat energy in the soil layer for the growth of crops; and the air circulation control unit is arranged on the side wall of the greenhouse and used for controlling the heat exchange circulation loop.
Description
Technical Field
The invention relates to the technical field of greenhouses, in particular to a greenhouse soil seasonal heat storage and supply system and a solar photo-thermal energy storage and supply greenhouse.
Background
The facility agricultural production is an important component of modern agricultural production, and in the actual operation process, a mode of controlling crops by adopting a data acquisition system of elements affecting crop growth, such as environmental temperature, humidity, illumination, CO2 and the like in the facility to realize continuous production is generally adopted.
The greenhouse is an important agricultural facility and mainly has the functions of providing a growing environment with proper temperature and humidity for crops in the off-season winter or spring and autumn, improving the yield or quality of the crops and enabling people to eat fresh vegetables in the off-season.
At present, the traditional plastic film arched greenhouse is mainly used as a Chinese greenhouse, although the risk resistance of agriculture is enhanced to a certain degree, the planting efficiency is improved, and the income of farmers is increased, the heat storage and heat preservation performance of the Chinese greenhouse is poor. In winter, autumn, winter and spring in most areas of China, the climate is cold and the temperature difference between day and night is large. In cold winter, especially under the conditions of continuous snowfall and extremely cold weather, the soil temperature change of the traditional facility agriculture is influenced by the air temperature in the shed and the environment temperature, so that the phenomena of freezing damage, cold damage, even withering and freezing of crop plants and the like are easily caused, and the risk is brought to the facility agriculture planting.
In northern areas of China, the solar energy is cold and long in winter, the radiation intensity of the solar energy is weak, the radiation intensity of the solar energy is strong in summer, and the problem of intermittent shortage of the solar energy exists. In order to ensure the effective growth of crops planted in the greenhouse in winter, heating equipment needs to be added in the greenhouse for heating, a large amount of fossil energy can be consumed in the heating process, the operation cost and the maintenance cost are high, a large amount of carbon can be discharged, and the environment is further polluted. At present, the traditional heating equipment mainly improves the air temperature in the facility agriculture shed, the air density is reduced along with the temperature rise, the air is mainly gathered in the upper half space of the facility agriculture and is dissipated to the environment along with the dehumidification and ventilation operation of the facility agriculture, and the heat loss and the reduction of the system heat efficiency are caused. In addition to the requirement of proper air temperature, crops planted in the facility agriculture industry need proper planting soil temperature more importantly.
Various solutions are proposed, for example, patent No. 201820296772.8 proposes a solar-geothermal complementary energy facility agricultural greenhouse, which comprises a plurality of greenhouses, wherein a hydraulic module and a water source heat pump unit are installed in the greenhouse, natural clean renewable energy sources such as direct solar heat and electric driving water/ground source heat pumps are used for completing the transmission and distribution of cold and heat by utilizing pipe groups arranged in pipe ditches of the greenhouse, and the energy requirements of the greenhouse are met all day long. The indoor temperature of the greenhouse is adjusted through equipment such as a radiator, a water ring heat pump, a roof spraying device, an underground heat pipe and the like, and a suitable growing environment can be provided for plants in the greenhouse.
Although above-mentioned scheme has solved traditional big-arch shelter energy consumption to a certain extent big, the problem of environmental protection inadequately, however above-mentioned green house is at the in-process that uses, if meet the storage heat supply effect that continuous haze weather can influence the big-arch shelter, and the demand of the required ground temperature of crop growth has not been considered to this scheme, and it is big to have initial stage equipment investment simultaneously, and later stage running cost height problem.
In order to solve the problems that when a greenhouse is used for planting in winter, the temperature in the greenhouse suddenly drops at night, the growth cycle of planted crops is influenced or the crops are seriously frozen, and the contradiction between low temperature and slow growth of plants in winter is that the greenhouse needs to be heated, however, in the process of heating the greenhouse, the traditional heating mode cannot meet the temperature requirement of the soil for planting the crops and also can pollute the air, and the heating by using clean energy has the defects of large initial equipment investment, high later-stage operation cost, incapability of meeting the ground temperature requirement required by the growth of the crops, unsuitability for the transformation of the traditional agricultural greenhouse and the like.
Disclosure of Invention
In view of the above, the present invention provides a greenhouse soil seasonal heat storage and supply system and a solar photo-thermal energy storage and supply greenhouse, which aims to solve the technical problems of intermittent shortage of solar energy, large energy consumption during heating in a heating manner used in a greenhouse, and incapability of meeting ground temperature requirements for crop growth in the prior art.
In order to achieve the above object, the present invention provides a greenhouse soil seasonal heat storage and supply system, comprising a seasonal heat storage unit, a solar heat collection unit and an air circulation control unit, wherein:
the seasonal heat storage unit is arranged in the soil layer of the greenhouse and used for seasonal heat storage so as to exchange heat with the soil in the soil layer of the greenhouse;
the solar heat collection unit is arranged outside the greenhouse and used for converting solar energy into heat energy, and the solar heat collection unit is connected with the seasonal-crossing heat storage unit to form a heat exchange circulation loop so that the seasonal-crossing heat storage unit can store heat in a soil layer for growth of crops;
and the air circulation control unit is arranged on the side wall of the greenhouse and used for controlling the heat exchange circulation loop.
As a further improvement of the invention, the solar heat collecting unit comprises a heat collector, a heat collecting pipe and a mounting base frame, wherein the heat collector is of an open structure, the heat collector is mounted outside a soil layer of the greenhouse through the mounting base frame, the heat collecting pipe penetrates through the inside of the heat collector, a glass cover plate is arranged at the opening of the heat collector, and light can penetrate through the glass cover plate and irradiate on the heat collecting pipe.
As a further improvement of the invention, the mounting base frame comprises a concrete platform and a fixed support, the fixed support is fixed on the concrete platform, the heat collector is fixedly mounted on the fixed support, the concrete platform is mounted on the soil layer of the greenhouse, the inner surface of the side wall of the heat collector is provided with a reflective aluminum layer, and the reflective aluminum layer can reflect part of light to the heat collecting tube.
As a further improvement of the invention, the solar trough collector is a solar trough collector and comprises a semi-parabolic reflecting wall and an arc reflecting wall, wherein the arc reflecting wall is arranged between the two semi-parabolic reflecting walls, the two semi-parabolic reflecting walls are symmetrically arranged relative to the arc reflecting wall, the semi-parabolic reflecting wall and the arc reflecting wall are surrounded to form the solar trough collector with an opening, the opening on the collector is a light inlet, and the glass cover plate is arranged at the opening on the collector.
As a further improvement of the present invention, the heat collecting tube comprises a tube cover body and a heat absorbing body, the heat absorbing body is arranged inside the tube cover body and can convert light rays passing through the tube cover body into heat energy, the tube cover body is arranged inside the heat collector in a penetrating manner, and the tube cover body is hermetically connected with the heat collector.
As a further improvement of the invention, the cross section of the heat absorbing body perpendicular to the axial direction of the heat absorbing body is in a shape like a Chinese character 'mi', and the surface of the heat absorbing body is coated with a heat absorbing coating.
As a further improvement of the invention, the fixed support comprises a support rod, a vertical rod and a bottom plate, the vertical rod is connected with the support rod, the support rod and the vertical rod are both fixed with the concrete platform, the bottoms of the support rod and the vertical rod are both connected with the bottom plate, the support rod, the vertical rod and the bottom plate form a triangular structure, the heat collector is detachably mounted on the support rod, the lower part of the support rod is provided with a supporting sheet for supporting the heat collector, and the bottom plate is connected with the concrete platform.
As a further improvement of the invention, the seasonal-crossing heat storage unit comprises a high-temperature gas pipe, a low-temperature gas pipe, a central heat storage pipe, a high-temperature header, a shunt tee joint and a high-temperature-resistant hose, the heat collection pipe is communicated with the shunt tee joint through the high-temperature-resistant hose, the shunt tee joint is connected with a power fan, the power fan is connected with the low-temperature gas pipe, the low-temperature gas pipe is communicated with the high-temperature gas pipe through the central heat storage pipe, the high-temperature gas pipe is communicated with the high-temperature header, the high-temperature header is communicated with the heat collection pipe, and a heat exchange circulation loop is formed among the heat collection pipe, the low-temperature gas pipe, the high-temperature gas pipe and the high-temperature header.
As a further improvement of the invention, the air circulation control unit comprises a control unit, an irradiator, a high temperature end temperature transmitter, a low temperature end temperature transmitter, a first temperature transmitter, a second temperature transmitter, a third temperature transmitter, an indoor temperature transmitter and an outdoor temperature transmitter, wherein the control unit is connected with the power fan, the control unit is mounted on the side wall of the sunlight greenhouse of the greenhouse, and the irradiator is mounted on the heat collector to collect the energy signal value of the solar radiation on the ground; the high-temperature end temperature transmitter is arranged on the high-temperature gas pipe, and the low-temperature end temperature transmitter is arranged on the low-temperature gas pipe; the first temperature transmitter, the second temperature transmitter and the third temperature transmitter are respectively installed at different depths of a greenhouse soil layer and are used for acquiring soil temperature simulation signals at different depths in the greenhouse soil layer; the indoor temperature transmitter is arranged inside the greenhouse, and the outdoor temperature transmitter is arranged outside the greenhouse.
The utility model provides a solar photothermal energy storage heat supply greenhouse, include the big-arch shelter and big-arch shelter soil stride the quarterly and store up the heat supply system, wherein, the big-arch shelter includes heat preservation wall body, big-arch shelter front-axle beam, greenhouse support and transparent protection casing, heat preservation wall body with the big-arch shelter front-axle beam is all fixed on big-arch shelter soil layer, heat preservation wall body with be provided with between the big-arch shelter front-axle beam the big-arch shelter support, big-arch shelter support top is covered with transparent protection casing, one side of transparent protection casing is provided with the canopy door, the inside wind-proof wall of fixing on big-arch shelter soil layer that is provided with of warmhouse booth, just the wind-proof wall towards the canopy door sets up.
The greenhouse soil seasonal heat storage and supply system provided by the invention utilizes the high-efficiency solar heat collection unit arranged outside the greenhouse to generate high-temperature air, and the high-temperature air is sent to the underground for storage through the seasonal heat storage unit arranged in the greenhouse soil layer, so as to exchange heat with the soil in the greenhouse soil layer; the solar heat collection unit is used for converting solar energy into heat energy, the trans-seasonal heat storage unit is used for storing the heat energy of underground soil in summer, autumn and winter, trans-seasonal storage of the solar energy into the heat energy is achieved, the problem of intermittent shortage of the solar energy in winter in northern areas of China is solved, the solar heat collection unit is connected with the trans-seasonal heat storage unit to form a heat exchange circulation loop, so that the trans-seasonal heat storage unit stores the heat energy in a soil layer, the ground temperature requirement for growth of facility agriculture solanaceous fruit crops in winter is met, the growth of root systems of crops is facilitated, the crop yield is improved, and the soil temperature condition which cannot be achieved by traditional facility agriculture greenhouses and other renewable energy facility agriculture is met. In addition, the invention can effectively reduce fossil energy consumed by agricultural warming in winter, improve the atmospheric quality of a planting area, reduce the emission of carbon dioxide, has low operating cost and is particularly suitable for severe cold areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a greenhouse provided in an embodiment of the present invention;
fig. 2 is another schematic structural view of a greenhouse provided by the embodiment of the invention (the transparent shield and the glass cover plate are not shown);
fig. 3 is a schematic view of the overall structure of a solar heat collecting unit provided by the embodiment of the invention;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a schematic view of a portion of a heat collector according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a back part of a solar heat collecting unit provided by the embodiment of the invention;
fig. 7 is a schematic structural diagram of a heat absorber provided in an embodiment of the invention;
fig. 8 is a schematic view of the overall structure of the mounting pedestal according to the embodiment of the invention;
FIG. 9 is an enlarged schematic view of portion B of FIG. 8;
FIG. 10 is an enlarged schematic view of portion C of FIG. 8;
FIG. 11 is a schematic diagram of a cross-season heat storage unit and a solar heat collection unit according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a trans-quarterly heat-storage unit according to an embodiment of the present invention;
fig. 13 is a partially enlarged schematic view of a trans-quarterly heat storage unit according to an embodiment of the present invention.
Reference numerals: 1. a greenhouse soil layer; 2. a solar heat collection unit; 21. a heat collector; 211. a semi-parabolic reflective wall; 212. a circular arc reflecting wall; 22. reflection an aluminum layer; 23. a tube housing body; 24. a heat absorbing body; 25. a glass cover plate; 26. a seal ring; 27. connecting sleeves; 28. a fixed bracket; 281. a support bar; 282. erecting a rod; 283. a base plate; 284. a support sheet; 285. bolt holes; 286. puncturing holes; 29. a concrete platform; 3. a trans-seasonal heat storage unit; 31. a high temperature gas delivery pipe; 32. a low temperature gas delivery pipe; 33. a central heat storage tube; 34. a high temperature header; 35. a shunt tee joint; 36. a high temperature resistant hose; 4. an air circulation control unit; 5. a heat-insulating wall body; 6. a transparent protective cover; 7. a shed door; 8. a front beam of the greenhouse; 9. a greenhouse bracket; 10. a power fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Referring to fig. 1 to 13, the invention provides a greenhouse soil seasonal heat storage and supply system, which comprises a seasonal heat storage unit 3, a solar heat collection unit 2 and an air circulation control unit 4.
The seasonal heat storage unit 3 is arranged in the greenhouse soil layer 1 and is used for seasonal heat storage so as to exchange heat with soil in the greenhouse soil layer 1; the solar heat collection unit 2 is arranged outside the greenhouse and used for converting solar energy into heat energy, and the solar heat collection unit 2 is connected with the seasonal-crossing heat storage unit 3 to form a heat exchange circulation loop so that the seasonal-crossing heat storage unit 3 can store heat in a soil layer for growth of crops; and the air circulation control unit 4 is arranged on the side wall of the greenhouse and used for controlling the heat exchange circulation loop.
Specifically, referring to fig. 3, the solar heat collecting unit 2 in the embodiment includes a heat collector 21, a heat collecting tube and an installation base frame, the heat collector 21 is an open structure, the heat collector 21 is installed outside the greenhouse soil layer 1 through the installation base frame, the heat collecting tube penetrates through the inside of the heat collector 21, a glass cover plate 25 is arranged at an opening of the heat collector 21, and light can penetrate through the glass cover plate 25 and irradiate on the heat collecting tube.
The installation bed frame includes concrete platform 29 and fixed bolster 28, and on fixed bolster 28 was fixed in concrete platform 29, heat collector 21 fixed mounting was on fixed bolster 28, and concrete platform 29 was installed on big-arch shelter soil layer 1, and the lateral wall internal surface of heat collector 21 is provided with reflection aluminium lamination 22, and reflection aluminium lamination 22 can be with partial light reflection to thermal-collecting tube.
The heat collecting tube comprises a tube cover body 23 and a heat absorbing body 24, the heat absorbing body 24 is arranged inside the tube cover body 23 and can convert light rays penetrating through the tube cover body 23 into heat energy, the middle of the heat collector 21 penetrates through the tube cover body 23, and the tube cover body 23 and the heat collector 21 realize a sealing effect through a sealing ring 26; the heat absorbing body 24 is arranged in the middle of the pipe cover body 23, the pipe cover body 23 and the pipe cover body 23 are connected in series through a connecting sleeve 27, and a first rubber plastic is wound outside the pipe cover body for heat preservation.
As an alternative embodiment of this embodiment, the heat collector 21 is a solar trough collector, and as shown in fig. 5, the solar trough collector includes two segments of semi-parabolic reflecting walls 211 and one segment of circular arc reflecting wall 212, where the circular arc reflecting wall 212 is disposed between the two segments of semi-parabolic reflecting walls 211, the two segments of semi-parabolic reflecting walls 211 are symmetrically disposed with respect to the circular arc reflecting wall 212, the semi-parabolic reflecting wall 211 and the circular arc reflecting wall 212 are enclosed to form the solar trough collector 21 with an opening, the opening on the heat collector 21 is a light inlet, and the glass cover plate 25 is disposed at the opening on the heat collector 21.
In this embodiment, the tube cover body 23 and the glass cover plate 25 are made of transparent materials, and light can penetrate through the glass cover plate 25 and irradiate on the transparent tube cover body 23; the reflective aluminum layer 22 can reflect light rays which are not irradiated onto the tube cover body 23 to the tube cover body 23, so that the effect of improving the illumination utilization rate is achieved; the heat absorber 24 can convert the light passing through the tube housing body 23 into heat energy, and the heat absorber 24 can store the heat energy in the air around the heat absorber.
As shown in fig. 7, the cross section of the heat absorbing body 24 perpendicular to the axial direction is in a shape like a Chinese character 'mi', and the heat absorbing body 24 is coated with heat absorbing coatings on both sides, so that the heat conversion efficiency is improved.
Referring to fig. 8 and 9, the fixing bracket 28 includes a support rod 281, a vertical rod 282 and a bottom plate 283, the vertical rod 282 is connected to the support rod 281, the support rod 281 and the vertical rod 282 are both fixed to the concrete platform 29, the bottom plates 283 are connected to the bottoms of the support rod 281 and the vertical rod 282, and the support rod 281, the vertical rod 282 and the two bottom plates 283 form a triangular structure. The length of the support rod 281 can be selected according to actual design requirements, bolt holes 285 are formed in the surface of the support rod 281, and the bolt holes 285 are arranged in two rows and are positioned on the left side and the right side of the surface of the support rod 281; the side of bracing piece 281 is opened there is three rows "barb hole 286" structures, the slidable mounting of convenient and pole setting 282 also plays the effect of adjusting bracing piece 281 and level ground angle, is connected through the connecting piece that is located barb hole 286 between bracing piece 281 and the pole setting 282.
In addition, the supporting sheet 284 is arranged at the lower end of the supporting rod 281, and the supporting sheet 284 plays a role in supporting the heat collector 21, so that the use of fixing bolts of the heat collector 21 is reduced, the labor force is reduced, and the installation efficiency is improved; the bottom plate 283 is divided into a front part and a rear part which are respectively connected with the support rod 281 and the upright rod 282; both bottom plates 283 are connected to the concrete platform 29; fastening bolts are embedded in the concrete platform 29 and connected with the greenhouse soil layer 1.
Referring to fig. 12, the seasonal heat storage unit 3 in this embodiment includes a high temperature gas pipe 31, a low temperature gas pipe 32, a central heat storage pipe 33, a high temperature header 34, a shunt tee 35, and a high temperature resistant hose 36, and the seasonal heat storage unit 3 is located in the greenhouse soil layer 1 and exchanges heat with soil.
The pipe cover body 23 in this embodiment has two rows of upper and lower lines, each row of transparent pipe cover bodies 23 connected in series is horizontally placed in parallel, one end of each of the two rows of pipe cover bodies 23 is respectively connected with a high temperature resistant hose 36 through a socket joint, the other ends of the two high temperature resistant hoses 36 are connected with a shunt tee 35, and the outer sides of the shunt tee 35 and the high temperature resistant hoses 36 are provided with second rubber and plastic heat preservation; as shown in fig. 13, the third end of the flow-dividing tee 35 is further connected with the power fan 10; the power fan 10 is connected with the low-temperature air conveying pipe 32, the outer surface of the upper part section of the low-temperature air conveying pipe 32 is provided with a second rubber plastic heat preservation layer, and the second rubber plastic heat preservation layer is generally arranged on the low-temperature air conveying pipe 32 section exposed outside the greenhouse; the low-temperature gas pipe 32 is connected with the central heat storage pipe 33, and the central heat storage pipe 33 can be one group or two or more groups according to specific items; the central heat storage pipe 33 is connected with the high-temperature gas pipe 31, and the high-temperature gas pipe 31 is connected with a first vent hole of the high-temperature header 34; the high temperature header 34 is a three-way structure with foamed polyurethane as a filling heat-insulating material and a metal bracket as an outer protective layer, and the second vent and the third vent of the high temperature header 34 are respectively connected with the other ends of the transparent pipe covers in the heat collector 21, for example, the second vent of the high temperature header 34 can be connected with the other end of the upper transparent pipe cover, and the third vent of the high temperature header 34 can be connected with the other end of the lower transparent pipe cover.
The air circulation control unit 4 comprises a control unit, an irradiator, a high-temperature end temperature transmitter, a low-temperature end temperature transmitter, a first temperature transmitter, a second temperature transmitter, a third temperature transmitter, an indoor temperature transmitter and an outdoor temperature transmitter. The high-temperature end temperature transmitter, the low-temperature end temperature transmitter, the first temperature transmitter, the second temperature transmitter, the third temperature transmitter, the indoor temperature transmitter and the outdoor temperature transmitter adopt sensors, specifically adopt temperature sensors, and are used for collecting temperature. The control unit judges whether logic conditions are met or not according to the input control signals, if the logic conditions are met, the power fan 10 is controlled to be started, the system starts to operate, and heat energy is stored in the soil layer. The control signals comprise an irradiation value signal, a high temperature end temperature signal and a low temperature end temperature signal. The power fan 10 is arranged on the low-temperature gas transmission pipe 32, and the control unit is arranged on the side wall of the sunlight greenhouse; the irradiator is arranged on the heat collector 21 and is used for collecting an energy signal value of solar irradiation on the ground; the high-temperature end temperature transmitter and the low-temperature end temperature transmitter are respectively arranged on the high-temperature gas transmission pipe 31 and the low-temperature gas transmission pipe 32 and are used for acquiring corresponding in-pipe air temperature analog signals; the first temperature transmitter, the second temperature transmitter and the third temperature transmitter are respectively arranged in different depths of a greenhouse soil layer 1, and soil temperature simulation signals of different depths in the soil layer are collected; the indoor temperature transmitter and the outdoor temperature transmitter are respectively arranged in the sunlight greenhouse and outside the sunlight greenhouse to collect temperature signals.
The control unit comprises a cabinet body, a power switch, a 24V direct-current power supply, a control circuit board assembly, a DTU module, a relay module, a display screen, a manual control start-stop button and an external equipment port group; the 24V direct-current power supply supplies power to the whole control circuit, the control system judges input signals collected by an external sensor, and the switching of the output circuit is controlled through the relay module; the DTU module uploads the acquired sensor data to the cloud, and the client can directly observe data and call historical data in real time in a computer or a mobile phone applet, so that the remote control function can be realized; the external device port group is used for quickly connecting the input device and the output device to the control system in the form of connecting wires.
In addition, the invention also provides a solar photo-thermal energy storage and heat supply greenhouse, which comprises a greenhouse and the greenhouse soil seasonal heat storage and supply system, wherein the greenhouse can meet the energy and temperature control requirements of modern agricultural greenhouses.
Referring to fig. 1 and 2, the greenhouse comprises a heat insulation wall body 5, a greenhouse front beam 8, a greenhouse support 9 and a transparent protective cover 6, wherein the heat insulation wall body 5 and the greenhouse front beam 8 are fixed on a greenhouse soil layer 1, the greenhouse support 9 is arranged between the heat insulation wall body 5 and the greenhouse front beam 8, the transparent protective cover 6 is covered above the greenhouse support 9, a greenhouse door 7 is arranged on one side of the transparent protective cover 6, and a solar heat collection unit 2 is arranged on the front side of the greenhouse front beam 8. The transparent protective cover 6 can be additionally provided with greenhouse cotton quilts according to local environmental conditions. The greenhouse quilt is 9 layers of rain-proof quilts (4 layers of sandwich cotton, 2 layers of flower felt, 2 layers of black felt and 1 layer of pearl cotton) so as to ensure the heat preservation and wind resistance of the greenhouse.
The solar photo-thermal energy storage and heat supply greenhouse is internally provided with a wind-isolation wall fixed on the greenhouse soil layer 1, and the wind-isolation wall is arranged towards the greenhouse door 7. A wind-proof wall is arranged in the greenhouse at a position 2 meters away from the greenhouse door 7, so that cold air in winter is reduced and directly enters the greenhouse through the greenhouse door 7, the temperature in the greenhouse is rapidly reduced, and an upper wind opening and a lower wind opening are formed.
The greenhouse utilizes the efficient solar heat collecting unit 2 to generate high-temperature air with the temperature of more than 60 ℃, the high-temperature air is sent to the underground for storage, then the temperature of the planting soil of facility agriculture in winter is controlled in a suitable growth range of crops, the underground soil is used for summer-autumn heat storage and winter heat storage, the trans-seasonal storage of solar energy converted into heat energy is realized, the problem of intermittent shortage of solar energy in winter in northern areas of China is solved, the ground temperature requirement required by growth of facility agriculture solanaceous fruit crops in winter is met, the root system growth of crops is promoted, the crop yield is improved, and the soil temperature condition which cannot be achieved by the traditional facility agriculture greenhouse and other renewable energy facility agriculture is realized. The invention can effectively reduce fossil energy consumed by facility agriculture warming in winter, improve the atmospheric quality of planting areas, reduce carbon dioxide emission, has low system investment cost and is particularly suitable for severe cold areas.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a greenhouse soil is striden quarterly and is stored up heat supply system which characterized in that, includes strides quarterly heat-retaining unit, solar energy collection unit and air cycle control unit, wherein:
the seasonal heat storage unit is arranged in the soil layer of the greenhouse and used for seasonal heat storage so as to exchange heat with the soil in the soil layer of the greenhouse;
the solar heat collection unit is arranged outside the greenhouse and used for converting solar energy into heat energy, and the solar heat collection unit is connected with the seasonal-crossing heat storage unit to form a heat exchange circulation loop so that the seasonal-crossing heat storage unit can store heat in a soil layer for growth of crops;
and the air circulation control unit is arranged on the side wall of the greenhouse and used for controlling the heat exchange circulation loop.
2. The greenhouse soil seasonal heat storage and supply system according to claim 1, wherein the solar heat collection unit comprises a heat collector, a heat collection pipe and an installation base frame, the heat collector is of an open structure, the heat collector is installed outside a greenhouse soil layer through the installation base frame, the heat collection pipe penetrates through the inside of the heat collector, a glass cover plate is arranged at an opening of the heat collector, and light can penetrate through the glass cover plate and irradiate on the heat collection pipe.
3. The greenhouse soil seasonal heat storage and supply system according to claim 2, wherein the mounting base frame comprises a concrete platform and a fixing support, the fixing support is fixed on the concrete platform, the heat collector is fixedly mounted on the fixing support, the concrete platform is mounted on the greenhouse soil layer, a reflective aluminum layer is arranged on the inner surface of the side wall of the heat collector, and the reflective aluminum layer can reflect part of light to the heat collecting pipes.
4. The greenhouse soil seasonal heat storage and supply system according to claim 2, wherein the heat collector is a solar trough heat collector and comprises a semi-parabolic reflecting wall and an arc reflecting wall, wherein the arc reflecting wall is arranged between the two semi-parabolic reflecting walls, the two semi-parabolic reflecting walls are symmetrically arranged relative to the arc reflecting wall, the semi-parabolic reflecting wall and the arc reflecting wall are enclosed to form the solar trough heat collector with an opening, the opening on the heat collector is a light inlet, and the glass cover plate is arranged at the opening on the heat collector.
5. The greenhouse soil seasonal heat storage and supply system according to claim 2, wherein the heat collecting tubes comprise a tube cover body and a heat absorbing body, the heat absorbing body is arranged inside the tube cover body and can convert light rays passing through the tube cover body into heat energy, the tube cover body is arranged inside the heat collector in a penetrating manner, and the tube cover body is in sealed connection with the heat collector.
6. The greenhouse soil seasonal heat storage and supply system according to claim 5, wherein the heat absorbing body has a cross-sectional shape perpendicular to an axial direction thereof in a shape of a Chinese character 'mi', and a surface of the heat absorbing body is coated with a heat absorbing coating.
7. The greenhouse soil seasonal heat storage and supply system according to claim 3, wherein the fixing support comprises a supporting rod, a vertical rod and a bottom plate, the vertical rod is connected with the supporting rod, the supporting rod and the vertical rod are both fixed with the concrete platform, the bottom of the supporting rod and the bottom of the vertical rod are both connected with the bottom plate, the supporting rod, the vertical rod and the bottom plate form a triangular structure, the heat collector is detachably mounted on the supporting rod, a supporting sheet for supporting the heat collector is arranged at the lower part of the supporting rod, and the bottom plate is connected with the concrete platform.
8. The greenhouse soil seasonal heat storage and supply system according to claim 2, wherein the seasonal heat storage unit comprises a high-temperature gas pipe, a low-temperature gas pipe, a central heat storage pipe, a high-temperature header, a shunt tee joint and a high-temperature-resistant hose, the heat collection pipe is communicated with the shunt tee joint through the high-temperature-resistant hose, the shunt tee joint is connected with a power fan, the power fan is connected with the low-temperature gas pipe, the low-temperature gas pipe is communicated with the high-temperature gas pipe through the central heat storage pipe, the high-temperature gas pipe is communicated with the high-temperature header, the high-temperature header is communicated with the heat collection pipe, and a heat exchange circulation loop is formed among the heat collection pipe, the low-temperature gas pipe, the high-temperature gas pipe and the high-temperature header.
9. The greenhouse soil seasonal heat storage and supply system according to claim 8, wherein the air circulation control unit comprises a control unit, an irradiator, a high temperature end temperature transmitter, a low temperature end temperature transmitter, a first temperature transmitter, a second temperature transmitter, a third temperature transmitter, an indoor temperature transmitter and an outdoor temperature transmitter, wherein the control unit is connected with the power fan, the control unit is mounted on a side wall of a sunlight greenhouse of the greenhouse, and the irradiator is mounted on the heat collector to collect an energy signal value of solar radiation on the ground; the high-temperature end temperature transmitter is arranged on the high-temperature gas pipe, and the low-temperature end temperature transmitter is arranged on the low-temperature gas pipe; the first temperature transmitter, the second temperature transmitter and the third temperature transmitter are respectively installed at different depths of the greenhouse soil layer and are used for acquiring soil temperature simulation signals at different depths in the greenhouse soil layer; the indoor temperature transmitter is arranged inside the greenhouse, and the outdoor temperature transmitter is arranged outside the greenhouse.
10. The solar photo-thermal energy storage and heat supply greenhouse is characterized by comprising a greenhouse and the greenhouse soil seasonal heat storage and supply system according to any one of claims 1 to 9, wherein the greenhouse comprises a heat insulation wall body, a greenhouse front beam, a greenhouse support and a transparent protective cover, the heat insulation wall body and the greenhouse front beam are fixed on a greenhouse soil layer, the heat insulation wall body and the greenhouse front beam are arranged between the heat insulation wall body and the greenhouse front beam, the greenhouse support is covered with the transparent protective cover, a greenhouse door is arranged on one side of the transparent protective cover, a wind isolation wall fixed on the greenhouse soil layer is arranged inside the greenhouse, and the wind isolation wall faces the greenhouse door.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211583198.1A CN115843578A (en) | 2022-12-09 | 2022-12-09 | Greenhouse soil seasonal heat storage and supply system and solar photo-thermal energy storage and supply greenhouse |
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| CN202211583198.1A CN115843578A (en) | 2022-12-09 | 2022-12-09 | Greenhouse soil seasonal heat storage and supply system and solar photo-thermal energy storage and supply greenhouse |
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| CN115843578A true CN115843578A (en) | 2023-03-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116991187A (en) * | 2023-08-01 | 2023-11-03 | 东北农业大学 | Greenhouse intelligent temperature control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116991187A (en) * | 2023-08-01 | 2023-11-03 | 东北农业大学 | Greenhouse intelligent temperature control system |
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