Animal husbandry shed integrating phase change energy storage and solar heat supply

Abstract

The invention belongs to the technical field of animal husbandry breeding sheds, and provides an animal husbandry shed integrating phase change energy storage and solar heat supply, which comprises a phase change energy storage system, a solar heat supply system, a soil heat storage system and a heat preservation shed, the solar heat supply system is connected with the soil heat storage system and used for transferring heat to the soil heat storage system and the phase change energy storage system. The soil heat storage system is located below the heat preservation shed. The solar heat supply system is arranged at the top of the heat preservation shed; according to the animal husbandry shed integrating phase change energy storage and solar heat supply, the phase change energy storage system, the solar heat supply system and the soil heat storage system are integrated, the energy utilization efficiency is improved, the operation cost is reduced, the environmental conditions in the animal husbandry shed are remarkably improved, and a more comfortable environment is provided for growth of animals.

Description

Technical Field

[0001] The present invention belongs to the technical field of livestock breeding sheds, and particularly relates to a livestock shed integrating phase change energy storage and solar heating. Background Art

[0002] Livestock breeding sheds are indispensable infrastructure in livestock production, and their design is directly related to the growth environment, health status and breeding efficiency of animals. At present, the winter heating of livestock sheds mainly relies on traditional energy sources such as coal, oil or electricity, which not only has high operating costs but also may cause environmental pollution. With the continuous development of renewable energy technologies, solar energy, as a clean and renewable energy source, has been increasingly concerned about its application in livestock sheds. However, a simple solar heating system has problems such as unstable heating and insufficient energy storage. For example, in low-light conditions in winter, the heat collected by solar collectors is limited and it is difficult to meet the all-weather, high-efficiency and stable heating requirements of livestock sheds. In response to this problem, there are also some technologies in the prior art that combine solar heat collection and cross-seasonal soil heat storage. However, in specific implementation, solar heat collection and soil heat storage are independent parts, and the coordination between them is not high, resulting in low efficiency and large heat loss when they supply heat independently.

[0003] As a solution for efficient heat energy storage and conversion, phase change energy storage technology can absorb or release a large amount of heat energy within a specific temperature range. This characteristic enables it to cooperate with solar energy to efficiently store heat energy when solar energy is sufficient and stably release heat energy when the light is insufficient, thus ensuring the continuous stability of the temperature in the shed. Therefore, it is particularly important to develop a livestock shed that can efficiently utilize solar energy, achieve heat energy storage and stable heating. The present invention is precisely a livestock shed integrating phase change energy storage and solar heating proposed based on the above background, aiming to achieve efficient storage and stable release of heat energy by combining phase change energy storage technology, solar heating technology and cross-seasonal soil heat storage technology, and provide an efficient and stable heating solution for livestock sheds. This shed not only improves the energy utilization efficiency, reduces the operating costs, but also reduces environmental pollution, which conforms to the concept of sustainable development. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a livestock shed integrating phase change energy storage and solar heating to solve the problems in the prior art. The technical solution adopted by the present invention is as follows: A livestock shed integrating phase change energy storage and solar heating, comprising a phase change energy storage system, a solar heating system, a soil heat storage system and a heat-insulated shed; The solar heating system is connected to the soil heat storage system for transferring heat to the soil heat storage system and the phase change energy storage system; the soil heat storage system is located below the insulated shed; the solar heating system is arranged on the top of the insulated shed. The phase change energy storage system includes a heat preservation box, a solar heat exchange coil, and a soil heat exchange coil; the heat preservation box is divided into three chambers, namely a solar heat exchange chamber, a soil heat exchange chamber, and a common heat exchange chamber; the first phase change energy storage medium and the solar heat exchange coil are arranged in the solar heat exchange chamber, the third phase change energy storage medium and the soil heat exchange coil are arranged in the soil heat exchange chamber, and the second phase change energy storage medium is arranged in the common heat exchange chamber; the solar heat exchange coil is connected to the solar heating system, and the soil heat exchange coil is connected to the soil heat storage system. A conversion mechanism is arranged in the common heat exchange chamber, and the conversion mechanism is used to connect or separate the three chambers to enable the first phase change energy storage medium, the second phase change energy storage medium, and the third phase change energy storage medium to contact and conduct heat or be separated.

[0005] Further, the phase change energy storage system further includes a heat preservation water tank, a first heat preservation water tank heat exchange coil, a second heat preservation water tank heat exchange coil, and an intermediate heat exchange coil. Both ends of the first heat preservation water tank heat exchange coil are respectively communicated with a first water inlet pipe and a first water return pipe, and the first water inlet pipe and the first water return pipe are respectively communicated with the heat preservation water tank; the first heat preservation water tank heat exchange coil is located in the solar heat exchange chamber. Both ends of the second heat preservation water tank heat exchange coil are respectively communicated with a second water inlet pipe and a second water return pipe, and the second water inlet pipe and the second water return pipe are respectively communicated with the heat preservation water tank; the second heat preservation water tank heat exchange coil is located in the soil heat exchange chamber. Both ends of the intermediate heat exchange coil are respectively communicated with a third water inlet pipe and a third water return pipe, and the third water inlet pipe and the third water return pipe are respectively communicated with the heat preservation water tank; the intermediate heat exchange coil is located in the common heat exchange chamber.

[0006] Further, the solar heating system includes a solar collector, the solar collector is installed on the top of the insulated shed, and the water inlet end and the water drainage end of the solar collector are respectively communicated with both ends of the solar heat exchange coil through a collector water inlet pipe and a collector water return pipe. The soil heat storage system includes a heat preservation foundation pit, a connecting pipe, and soil heat storage pipes; the heat preservation foundation pit is provided with backfill soil and the soil heat storage pipes, the soil heat storage pipes are communicated with the connecting pipe, and both ends of the connecting pipe are respectively communicated with both ends of the soil heat exchange coil through a soil heat storage water inlet pipe and a soil heat storage water return pipe. Both ends of a second three-way valve are provided on and communicated with the collector inlet pipe, and the third end of the second three-way valve is communicated with the soil heat storage inlet pipe; both ends of a third three-way valve are provided on and communicated with the collector return pipe, and the third end of the third three-way valve is communicated with the soil heat storage return pipe; By reversing the second three-way valve and the third three-way valve, the solar collector and the soil heat storage pipe are made to form a circulating flow.

[0007] Further, an insulating layer, a floor heating layer, and a heat preservation brick layer are sequentially arranged from bottom to top above the backfill soil; A flow channel is arranged in the floor heating layer, one end of the flow channel is communicated with the floor heating inlet pipe, and the other end of the flow channel is communicated with the floor heating return pipe; a first flow dividing valve is provided on and communicated with the soil heat storage inlet pipe, and the third end of the first flow dividing valve is communicated with the floor heating inlet pipe; a second flow dividing valve is provided on and communicated with the soil heat storage return pipe, and the third end of the second flow dividing valve is communicated with the floor heating return pipe.

[0008] Further, a feed trough is arranged on the heat preservation brick layer, and a fence and a heat preservation mechanism are arranged on the side of the feed trough. The fence and the heat preservation mechanism are connected to the soil heat storage system and are used for heating the feed trough.

[0009] Further, the fence and the heat preservation mechanism include fence vertical rods, heat conducting rods, and heat transfer sleeves; The fence vertical rods are vertically arranged, the fence vertical rods are of a hollow structure, and the heat conducting rods are slidably arranged in the fence vertical rods; the bottom of the insulating layer is fixedly connected with the heat transfer sleeves, the heat transfer sleeves are adapted to the heat conducting rods, the heat transfer sleeves are located in the backfill soil, and the heat conducting rods are used for sliding into the heat transfer sleeves and transferring part of the heat of the backfill soil to the feed trough.

[0010] Further, the bottom of the feed trough is fixedly connected with a heat preservation outer shell. A heat conducting filler and a hollow pipe are arranged in the heat preservation outer shell. The heat conducting filler is located outside the hollow pipe. The top and bottom of the hollow pipe are respectively fixedly connected with the heat preservation outer shell. Guide through holes communicating with the hollow pipe are respectively arranged at the top and bottom of the heat preservation outer shell. Through holes coaxial with and communicating with the guide through holes are arranged on the insulating layer, the floor heating layer, and the heat preservation brick layer. The hollow pipe is coaxially arranged with the heat conducting rod; the bottom of the fence vertical rod is fixedly connected with the heat preservation outer shell; A waterproof board is arranged in the feed trough. A heat conducting board is arranged at the bottom of the waterproof board. The bottom of the heat conducting board is fixedly connected with a heat conducting column. The heat conducting column passes through the bottom of the feed trough and the top of the heat preservation outer shell, and the bottom of the heat conducting column is inserted into the heat conducting filler.

[0011] Furthermore, a hollow seat is fixedly arranged inside the heat preservation box. On both sides of the hollow seat are a solar heat exchange chamber and a soil heat exchange chamber, and inside the hollow seat is a common heat exchange chamber; the conversion mechanism includes an inner cylinder, heat insulation filler, outer cylinder, motor, bottom plate and a medium circulation pipe; The outer cylinder is rotatably arranged inside the hollow seat. The outer cylinder is sleeved on the inner cylinder. The heat insulation filler is arranged between the outer cylinder and the inner cylinder. The bottom of the outer cylinder and the inner cylinder is fixedly connected to the bottom plate, and the bottom plate is connected to the motor rotating shaft; Openings communicating with the solar heat exchange chamber and the soil heat exchange chamber are respectively formed on both sides of the hollow seat. A medium circulation pipe adapted to the opening is fixedly connected to the outer cylinder. The medium circulation pipe passes through the outer cylinder, the heat insulation filler and the inner cylinder, and a second phase change energy storage medium is arranged inside the inner cylinder; The motor is used to drive the bottom plate to rotate, so that the medium circulation pipe communicates with the opening or the outer cylinder covers the opening.

[0012] Furthermore, elastic pressure components are arranged at the tops of the solar heat exchange chamber and the soil heat exchange chamber. The elastic pressure components include springs and pressing plates. The springs are located above the pressing plates, and the bottoms of the pressing plates abut against the first phase change energy storage medium and the third phase change energy storage medium.

[0013] The present invention has the following beneficial effects: Through the interaction of the phase change energy storage system, the solar heating system and the soil heat storage system, the present invention can realize the stable storage, efficient release and flexible utilization of heat energy; in low-temperature weather, especially in winter, when the heat collected by the solar heating system is limited, the soil heat storage system can supplement heat energy to ensure the stable temperature inside the shed; while in summer when the temperature is high, the hot water demand in the shed is small, and the solar heating system can transfer the excess heat to the soil heat storage system for storage for winter use; the present invention uses the phase change energy storage technology, which can absorb or release a large amount of heat during the phase change process, so as to realize the efficient storage and release of heat energy; an integrated livestock shed integrating phase change energy storage and solar heating of the present invention integrates a phase change energy storage system, a solar heating system and a soil heat storage system, which not only improves the energy utilization efficiency, reduces the operation cost, but also significantly improves the environmental conditions inside the livestock shed, providing a more comfortable environment for the growth of animals. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the phase change energy storage system; Figure 3 is a top view schematic diagram of the phase change energy storage system; Figure 4It is a schematic diagram when the opening and the medium circulation pipe are staggered; Figure 5 It is a top view schematic diagram when the opening and the medium circulation pipe are staggered; Figure 6 It is Figure 1 the enlarged schematic diagram at position A in Figure 7 It is a partial schematic diagram when the heat conduction rod is at the lowest position; Figure 8 It is a plan schematic diagram of the fence and the heat preservation mechanism; In the figure: ground 1; solar collector 2; heat preservation shed 3; feed trough 4; fence and heat preservation mechanism 5; heat preservation brick layer 6; floor heating layer 7; heat insulation layer 8; backfill soil 9; soil heat storage pipe 10; connecting pipe 11; heat preservation foundation pit 12; water adding tank 13; collector water inlet pipe 201; collector water return pipe 202; floor heating water inlet pipe 701; floor heating water return pipe 702; first water adding pipe 131; second water adding pipe 132; third water inlet pipe 141; third water return pipe 142; second water inlet pipe 143; second water return pipe 144; first water inlet pipe 145; first water return pipe 146; first heat preservation water tank heat exchange coil 151; solar heat exchange coil 152; second heat preservation water tank heat exchange coil 153; soil heat exchange coil 154; intermediate heat exchange coil 155; hollow seat 156; inner cylinder 157; heat insulation filler 158; outer cylinder 159; medium circulation pipe 160; first phase change energy storage medium 161; second phase change energy storage medium 162; third phase change energy storage medium 163; motor 164; opening 165; spring 166; pressing plate 167; bottom plate 168; feeding pipe 169; cover plate 501; heat conduction rod 502; fence vertical rod 503; heat preservation outer shell 504; heat conduction filler 505; hollow pipe 506; heat conduction column 507; heat conduction plate 508; sealing ring 509; waterproof plate 510; cross bar 511; heat transfer sleeve 512; first three-way valve 01; second three-way valve 02; third three-way valve 03; fourth three-way valve 04; first flow dividing valve 05; second flow dividing valve 06. Specific embodiments

[0015] Next, in combination with the Figures 1 - 8 in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. If not specifically specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0016] It should be noted that for the convenience of description, the "connection" referred to in the present invention means forming a connection relationship through pipeline connection, and the connection method is the prior art. For example, the connection is achieved through connecting parts such as water pipe connectors, quick connectors, and flange plates, or through methods such as welding and threaded connection to achieve fixed connection. For example, "both ends of the first heat exchange coil 151 of the first heat preservation water tank are respectively connected to the first water inlet pipe 145 and the first water return pipe 146" means that both ends of the first heat exchange coil 151 of the first heat preservation water tank are respectively fixedly connected to the ends of the first water inlet pipe 145 and the first water return pipe 146, and the first heat exchange coil 151 of the first heat preservation water tank is connected to the first water inlet pipe 145 and the first water return pipe 146, so that the medium can flow inside it. The "connection" of other pipelines and components is this connection relationship, and will not be elaborated here.

[0017] Such as Figure 1 , a livestock shed integrating phase change energy storage and solar heating, comprising a phase change energy storage system, a solar heating system, a soil heat storage system, and a heat preservation shed 3; The solar heating system is connected to the soil heat storage system for transferring heat to the soil heat storage system and the phase change energy storage system; the soil heat storage system is located below the heat preservation shed 3; the solar heating system is arranged on the top of the heat preservation shed 3; The phase change energy storage system includes a heat preservation box, a solar heat exchange coil 152, and a soil heat exchange coil 154; the heat preservation box is divided into three chambers, namely a solar heat exchange chamber, a soil heat exchange chamber, and a common heat exchange chamber; the first phase change energy storage medium 161 and the solar heat exchange coil 152 are arranged in the solar heat exchange chamber, the third phase change energy storage medium 163 and the soil heat exchange coil 154 are arranged in the soil heat exchange chamber, and the second phase change energy storage medium 162 is arranged in the common heat exchange chamber; the solar heat exchange coil 152 is connected to the solar heating system, and the soil heat exchange coil 154 is connected to the soil heat storage system; A conversion mechanism is arranged in the common heat exchange chamber, and the conversion mechanism is used to connect or separate the three chambers, so that the first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 are in contact for heat conduction or separated.

[0018] The structure of the heat-insulating shed 3 located above the soil heat storage system can effectively maintain the heat of the soil heat storage system. The outer wall of the heat-insulating shed 3 is preferably made of a heat-insulating wall. The phase change energy storage system of the present invention is arranged outside the heat-insulating shed 3. The heat-insulating box is fixed on the ground 1 through a bracket, and a waterproof layer and a heat-insulating layer are arranged outside the heat-insulating box. The heat-insulating box is horizontally arranged, and a solar heat exchange chamber, a common heat exchange chamber and a soil heat exchange chamber are sequentially arranged in the horizontal direction. The first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 are prior arts and can be any one or a combination of water, paraffin, fatty acid, and hydrate salts. Different phase change energy storage media have different phase change temperatures to meet the heat storage and release requirements at different ambient temperatures. The solar heat exchange coil 152 and the soil heat exchange coil 154 are both spiral structures to increase the heat exchange area and improve the heat exchange efficiency. The first phase change energy storage medium 161 covers the solar heat exchange coil 152 and the first heat preservation water tank heat exchange coil 151; the second phase change energy storage medium 162 covers the intermediate heat exchange coil 155; the third phase change energy storage medium 163 covers the second heat preservation water tank heat exchange coil 153 and the soil heat exchange coil 154.

[0019] During operation, the solar collector 2 absorbs solar energy and converts it into heat energy to heat the liquid medium in the collector. The liquid medium circulates through the collector inlet pipe 201, the solar heat exchange coil 152, and the collector return pipe 202, transferring the heat energy to the solar heat exchange coil 152, and then heating the first phase change energy storage medium 161. When the solar energy is sufficient, the first phase change energy storage medium 161 reaches the phase change temperature and undergoes a phase change, storing a large amount of heat energy.

[0020] The present invention includes the following working modes: In summer or high-temperature weather, with sufficient sunlight, the solar heating system transfers a part of the heat to the soil heat storage system for storage, and another part of the heat to the phase change energy storage system for storage. The heat in the phase change energy storage system can be directly exchanged heat for the daily hot water demand of the heat-insulating shed 3, and the heat in the soil heat storage system is used for cross-season storage; at this time, through the action of the conversion mechanism, the three chambers are not connected, so the first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 are separated, and the solar heating system transfers heat to the first phase change energy storage medium 161, which can avoid heat loss to the second phase change energy storage medium 162, the third phase change energy storage medium 163, and the corresponding coils.

[0021] In winter or in low-temperature weather, when sunlight is insufficient, the solar heating system transfers a small amount of heat to the phase change energy storage system, and the heat stored across seasons by the soil heat storage system is transferred to the phase change energy storage system. That is, the first phase change energy storage medium 161 and the third phase change energy storage medium 163 are heated. At this time, through the action of the conversion mechanism, the three chambers are connected, and the first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 conduct heat by contact. Therefore, the heat source in the phase change energy storage system at this time is the sunlight heat of the solar heating system and the heat stored across seasons by the soil heat storage system, which can fully transfer heat to the phase change energy storage system. The heat in the phase change energy storage system is directly used for heat exchange to meet the daily hot water demand of the insulation shed 3.

[0022] Through the interaction of the phase change energy storage system, the solar heating system, and the soil heat storage system, the present invention can achieve stable storage, efficient release, and flexible utilization of thermal energy. In low-temperature weather, especially in winter, when the heat collected by the solar heating system is limited, the soil heat storage system can supplement thermal energy to ensure the stable temperature inside the shed. In summer when the temperature is high, the hot water demand in the shed is small, and the solar heating system can transfer the excess heat to the soil heat storage system for storage for use in winter. The present invention uses phase change energy storage technology, which can absorb or release a large amount of heat during the phase change process, thereby achieving efficient storage and release of thermal energy. An integrated livestock shed integrating phase change energy storage and solar heating of the present invention integrates a phase change energy storage system, a solar heating system, and a soil heat storage system, which not only improves the energy utilization efficiency, reduces the operating cost, but also significantly improves the environmental conditions inside the livestock shed, providing a more comfortable environment for the growth of animals.

[0023] Such as Figures 2 - 5 , the phase change energy storage system further includes a heat preservation water tank 14, a first heat preservation water tank heat exchange coil 151, a second heat preservation water tank heat exchange coil 153, and an intermediate heat exchange coil 155; Both ends of the first heat preservation water tank heat exchange coil 151 are respectively connected to a first water inlet pipe 145 and a first water return pipe 146, and the first water inlet pipe 145 and the first water return pipe 146 are respectively connected to the heat preservation water tank 14; the first heat preservation water tank heat exchange coil 151 is located in the solar heat exchange chamber; Both ends of the second heat preservation water tank heat exchange coil 153 are respectively connected to a second water inlet pipe 143 and a second water return pipe 144, and the second water inlet pipe 143 and the second water return pipe 144 are respectively connected to the heat preservation water tank 14; the second heat preservation water tank heat exchange coil 153 is located in the soil heat exchange chamber; Both ends of the intermediate heat exchange coil 155 are respectively connected to a third water inlet pipe 141 and a third water return pipe 142, and the third water inlet pipe 141 and the third water return pipe 142 are respectively connected to the heat preservation water tank 14; the intermediate heat exchange coil 155 is located in the common heat exchange chamber.

[0024] Specifically, the solar heat exchange coil 152, the soil heat exchange coil 154, the intermediate heat exchange coil 155, the first heat preservation water tank heat exchange coil 151, the second heat preservation water tank heat exchange coil 153, and the ends of the intermediate heat exchange coil 155 all pass through the heat preservation box for connection. Corresponding pump bodies and valves are provided on the first water inlet pipe 145, the second water inlet pipe 143, the third water inlet pipe 141, the soil heat storage water inlet pipe 111, the collector water inlet pipe 201, and the floor heating water inlet pipe 701 to facilitate the circulation of the liquid medium.

[0025] The first heat preservation water tank heat exchange coil 151 and the solar heat exchange coil 152 are both located in the solar heat exchange chamber and are covered by the first phase change energy storage medium 161; the second heat preservation water tank heat exchange coil 153 and the soil heat exchange coil 154 are both located in the soil heat exchange chamber and are covered by the third phase change energy storage medium 163; the intermediate heat exchange coil 155 is located in the common heat exchange chamber and is covered by the second phase change energy storage medium 162.

[0026] The solar heat exchange coil 152 transfers the heat of the solar collector 2 to the first phase change energy storage medium 161, and transfers the heat to the first heat preservation water tank heat exchange coil 151 through the first phase change energy storage medium 161. The first heat preservation water tank heat exchange coil 151 circulates water in the heat preservation water tank 14 through the first water inlet pipe 145 and the first water return pipe 146, thereby transferring the heat to the water in the heat preservation water tank 14.

[0027] The soil heat exchange coil 154 transfers the soil heat to the third phase change energy storage medium 163, and transfers the heat to the second heat preservation water tank heat exchange coil 153 through the third phase change energy storage medium 163. The second heat preservation water tank heat exchange coil 153 circulates water in the heat preservation water tank 14 through the second water inlet pipe 143 and the second water return pipe 144, thereby transferring the heat to the water in the heat preservation water tank 14.

[0028] When the solar heating system and the soil heat storage system work together, the heat of the first phase change energy storage medium 161 and the third phase change energy storage medium 163 is transferred to the second phase change energy storage medium 162. The second phase change energy storage medium 162 transfers the heat to the intermediate heat exchange coil 155. The intermediate heat exchange coil 155 circulates water in the heat preservation water tank 14 through the third water inlet pipe 141 and the third water return pipe 142, thereby transferring the heat to the water in the heat preservation water tank 14.

[0029] The water in the heat preservation water tank 14 is domestic water, and after being heated, it can be directly used for the daily use of the heat preservation shed 3, such as for animals to drink hot water, clean with hot water, heat feed with hot water, etc.

[0030] Further, the solar heating system includes a solar collector 2, which is installed on the top of the heat-insulated shed 3. The water inlet end and the water drainage end of the solar collector 2 are respectively connected to both ends of the solar heat exchange coil 152 through a collector water inlet pipe 201 and a collector water return pipe 202; The soil heat storage system includes a heat-insulated foundation pit 12, a connecting pipe 11 and soil heat storage pipes 10; the heat-insulated foundation pit 12 is provided with backfill soil 9 and the soil heat storage pipes 10, the soil heat storage pipes 10 are connected to the connecting pipe 11, and both ends of the connecting pipe 11 are respectively connected to both ends of the soil heat exchange coil 154 through a soil heat storage water inlet pipe 111 and a soil heat storage water return pipe 112; Both ends of a second three-way valve 02 are arranged and connected on the collector water inlet pipe 201, and the third end of the second three-way valve 02 is connected to the soil heat storage water inlet pipe 111; both ends of a third three-way valve 03 are arranged and connected on the collector water return pipe 202, and the third end of the third three-way valve 03 is connected to the soil heat storage water return pipe 112; By reversing the second three-way valve 02 and the third three-way valve 03, the solar collector 2 and the soil heat storage pipes 10 are made to form a circulating flow.

[0031] The solar collector 2 is a prior art and transfers heat through the circulating flow of a liquid medium. The liquid medium is in the collector water inlet pipe 201, the collector water return pipe 202 and the solar heat exchange coil 152. After the solar collector 2 is heated to collect heat, a high-temperature liquid medium is formed. The high-temperature liquid medium enters one end of the solar heat exchange coil 152 through the collector water return pipe 202, then is output from the other end of the solar heat exchange coil 152 to the collector water inlet pipe 201, and finally enters the solar collector 2 through the collector water inlet pipe 201 to continue circulating.

[0032] The soil heat storage pipes 10 are a prior art and can be in the structure of coils. A plurality of soil heat storage pipes 10 can be provided and are fixedly connected to the connecting pipe 11 in a parallel manner. A liquid medium is provided in the soil heat storage pipes 10, the connecting pipe 11, the soil heat storage water inlet pipe 111, the soil heat storage water return pipe 112 and the soil heat exchange coil 154. The soil heat storage pipes 10 output the liquid medium to the soil heat storage water return pipe 112 through the connecting pipe 11. The soil heat storage water return pipe 112 outputs the liquid medium to one end of the soil heat exchange coil 154. The other end of the soil heat exchange coil 154 inputs the liquid medium into the connecting pipe 11 through the soil heat storage water inlet pipe 111, forming a circulating flow of the liquid medium and transferring heat to the soil heat exchange coil 154.

[0033] The heat-insulated foundation pit 12 is constructed in advance, and a heat-insulating layer is poured in the tank body of the heat-insulated foundation pit 12. Then, the improved backfill soil 9 is filled in the heat-insulated foundation pit 12, that is, the original soil (excavated soil) is mixed with sand, gravel, and heat-conducting additives (such as metal scraps and graphite powder) in proportion to optimize the heat conductivity and porosity. The soil heat storage pipe 10 is buried in the backfill soil 9.

[0034] In addition, the present invention is also provided with a water addition tank 13, a first water addition pipe 131, a second water addition pipe 132, a first three-way valve 01, and a fourth three-way valve 04; a liquid medium for heat exchange, such as pure water, is provided in the water addition tank 13.

[0035] The first three-way valve 01 is provided and connected to the soil heat storage water inlet pipe 111. The first three-way valve 01 cuts off the soil heat storage water inlet pipe 111. The two ends of the first three-way valve 01 are fixedly connected to the cut-off parts of the soil heat storage water inlet pipe 111. The third end of the first three-way valve 01 is connected to the first water addition pipe 131, and the first water addition pipe 131 is connected to the water addition tank 13; The fourth three-way valve 04 is provided and connected to the collector water inlet pipe 201. The fourth three-way valve 04 cuts off the collector water inlet pipe 201. The two ends of the fourth three-way valve 04 are fixedly connected to the cut-off parts of the collector water inlet pipe 201. The third end of the fourth three-way valve 04 is connected to the second water addition pipe 132, and the second water addition pipe 132 is connected to the water addition tank 13; Pumps and valves are provided on both the first water addition pipe 131 and the second water addition pipe 132 to output the water in the water addition tank 13 into the soil heat storage water inlet pipe 111 and the collector water inlet pipe 201, so as to play a role in supplementing and adding the liquid medium.

[0036] The second three-way valve 02 cuts off the collector water inlet pipe 201. The two ends of the second three-way valve 02 are fixedly connected to the cut-off parts of the collector water inlet pipe 201. The third end of the second three-way valve 02 is connected to the soil heat storage water inlet pipe 111, and a first stop valve is provided on the soil heat storage water inlet pipe 111, which is located between the third end of the second three-way valve 02 and the soil heat exchange coil 154; The third three-way valve 03 cuts off the collector water return pipe 202. The two ends of the third three-way valve 03 are fixedly connected to the cut-off parts of the collector water return pipe 202. The third end of the third three-way valve 03 is connected to the soil heat storage water return pipe 112, and a second stop valve is provided on the soil heat storage water return pipe 112, and the second stop valve is located between the third end of the third three-way valve 03 and the soil heat exchange coil 154.

[0037] Furthermore, an insulating layer 8, a floor heating layer 7, and a heat-insulating brick layer 6 are sequentially arranged from bottom to top above the backfill soil 9; A flow channel is provided in the floor heating layer 7. One end of the flow channel is connected to the floor heating water inlet pipe 701, and the other end of the flow channel is connected to the floor heating water return pipe 702. A first flow dividing valve 05 is provided and connected to the soil heat storage water inlet pipe 111, and the third end of the first flow dividing valve 05 is connected to the floor heating water inlet pipe 701. A second flow dividing valve 06 is provided and connected to the soil heat storage water return pipe 112, and the third end of the second flow dividing valve 06 is connected to the floor heating water return pipe 702.

[0038] The heat insulation layer 8 is preferably made of high-efficiency heat insulation materials such as polystyrene foam board or rock wool board. It is provided above the backfill soil 9 to isolate the heat transfer between the backfill soil 9 and the floor heating layer 7, reduce heat loss, and improve the heat preservation effect. The thickness and density of the heat insulation layer 8 can be adjusted according to actual needs to achieve the best heat insulation effect. A coiled flow channel is provided inside the floor heating layer 7, or a coiled pipe is directly provided in the floor heating layer 7. The function of the floor heating layer 7 is to heat the heat preservation brick layer 6 to achieve the purpose of floor heating. The first flow dividing valve 05 and the second flow dividing valve 06 are prior arts. Their purpose is to divide a part of the liquid medium in the soil heat storage water inlet pipe 111 and the soil heat storage water return pipe 112, so as to directly use a part of the heat of the soil heat storage system for floor heating, reduce the heat transfer process, improve the heat utilization efficiency, and provide a comfortable environment for animals.

[0039] The specific heat exchange working process of the present invention is as follows: I. In summer or high-temperature weather, the temperature collected by the solar collector 2 is higher than the temperature of the backfill soil 9. The solar collector 2 collects heat to form a high-temperature liquid medium. The high-temperature liquid medium enters one end of the solar heat exchange coiled pipe 152 through the collector water return pipe 202, then is output from the other end of the solar heat exchange coiled pipe 152 to the collector water inlet pipe 201, and finally enters the solar collector 2 through the collector water inlet pipe 201 for continuous circulation. During this process, the solar heat exchange coiled pipe 152 transfers the heat to the first phase change energy storage medium 161, and transfers the heat to the first heat preservation water tank heat exchange coiled pipe 151 through the first phase change energy storage medium 161. The first heat preservation water tank heat exchange coiled pipe 151 circulates water in the heat preservation water tank 14 through the first water inlet pipe 145 and the first water return pipe 146, so as to transfer the heat to the water in the heat preservation water tank 14, and the user can directly use the hot water in the heat preservation water tank 14 as needed.

[0040] When the temperature of the first phase change energy storage medium 161 reaches the set threshold, such as 80°C, 100°C, etc., it can be detected by a temperature sensor, and the corresponding valve can be controlled through a PLC program. At the beginning of the heat storage stage, the second three-way valve 02 connects the collector water inlet pipe 201 to the soil heat storage water inlet pipe 111, and the third three-way valve 03 connects the collector return pipe 202 to the soil heat storage return pipe 112; the first stop valve and the second stop valve are closed. At this time, the high-temperature liquid medium passes through the solar collector 2 and is output to the collector return pipe 202. The collector return pipe 202 outputs the high-temperature liquid medium to the soil heat storage return pipe 112 through the third three-way valve 03. The soil heat storage return pipe 112 outputs the high-temperature liquid medium to the connecting pipe 11 and the soil heat storage pipe 10, thereby transferring the heat to the backfill soil 9. The low-temperature liquid medium after losing heat enters the soil heat storage water inlet pipe 111, and the second three-way valve 02 allows the low-temperature liquid medium to enter the collector water inlet pipe 201. The collector water inlet pipe 201 re-inputs the low-temperature liquid medium into the solar collector 2, forming a circulating flow of the liquid medium between the solar collector 2 and the soil heat storage pipe 10, thereby storing heat. If the temperature collected by the solar collector 2 is lower than the temperature of the backfill soil 9, the heat of the solar collector 2 will not be transferred to the backfill soil 9.

[0041] During this process, the solar heating system operates independently, and the soil heat storage system only stores heat. By means of a conversion mechanism to separate three chambers, the soil heat storage system can avoid directly storing heat by the third phase change energy storage medium 163, and the heat collected by the solar heating system can also avoid the second phase change energy storage medium 162 and the intermediate heat exchange coil 155, with higher centralized heat production efficiency.

[0042] Second, in winter or low-temperature weather, if there is sunlight and the temperature is between 5°C and 25°C, the solar collector 2 collects a small amount of heat and transfers the heat to the first phase change energy storage medium 161; the backfill soil 9 heats the soil heat storage pipe 10, and the soil heat storage pipe 10 outputs the liquid medium to the soil heat storage return pipe 112 through the connecting pipe 11. The soil heat storage return pipe 112 outputs the liquid medium to one end of the soil heat exchange coil 154, and the other end of the soil heat exchange coil 154 inputs the liquid medium into the connecting pipe 11 through the soil heat storage water inlet pipe 111, forming a circulating flow of the liquid medium to transfer the heat to the soil heat exchange coil 154. The soil heat exchange coil 154 transfers the soil heat to the third phase change energy storage medium 163.

[0043] At this time, the solar heating system and the soil heat storage system operate in coordination. Through the conversion mechanism, the three chambers are connected, enabling the heat of the first phase change energy storage medium 161 and the third phase change energy storage medium 163 to be transferred to the second phase change energy storage medium 162. The second phase change energy storage medium 162 transfers heat to the intermediate heat exchange coil 155. The intermediate heat exchange coil 155 circulates water in the heat preservation water tank 14 through the third water inlet pipe 141 and the third water return pipe 142, thereby transferring heat to the water in the heat preservation water tank 14. Under the combined action of the solar heating system and the soil heat storage system, the heat output can be increased, and the heating effect can be improved. Moreover, in this process, the solar heating system is equivalent to a preheating system, which can also effectively reduce the heat output of the soil heat storage system, enabling the soil heat storage system to be used for a longer time.

[0044] If there is no sunlight in winter and the temperature of the solar collector 2 is much lower than that of the backfill soil 9, for example, the temperature difference between the two is greater than 30 °, at this time, the heat collection of the solar collector 2 is abandoned, and the soil heat storage system is relied on for heating. The three chambers are separated by the conversion mechanism, so that the heat output by the soil heat storage system only enters the third phase change energy storage medium 163, avoiding the first phase change energy storage medium 161, the second phase change energy storage medium 162 and the corresponding coils, and being able to avoid heat loss.

[0045] When floor heating is required, through the first flow dividing valve 05 and the second flow dividing valve 06 for flow division, a part of the liquid medium in the soil heat storage pipe 10 enters the floor heating layer 7 through the floor heating water inlet pipe 701 and the floor heating water return pipe 702, thereby directly generating floor heating and avoiding heat loss caused by multiple heat transfers.

[0046] Such as Figures 6 - 8 On the heat preservation brick layer 6, a feed trough 4 is provided. On the side of the feed trough 4, a fence and a heat preservation mechanism 5 are provided. The fence and the heat preservation mechanism 5 are connected to the soil heat storage system and are used to heat the feed trough 4.

[0047] Furthermore, the fence and the heat preservation mechanism 5 include a fence vertical rod 503, a heat conduction rod 502 and a heat transfer sleeve 512; The fence vertical rod 503 is vertically arranged. The fence vertical rod 503 is of a hollow structure, and the heat conduction rod 502 is slidably arranged in the fence vertical rod 503; the bottom of the heat insulation layer 8 is fixedly connected to the heat transfer sleeve 512. The heat transfer sleeve 512 is adapted to the heat conduction rod 502. The heat transfer sleeve 512 is located in the backfill soil 9, and the heat conduction rod 502 is used to slide into the heat transfer sleeve 512 and transfer part of the heat of the backfill soil 9 to the feed trough 4.

[0048] Further, the bottom of the feed trough 4 is fixedly connected to a heat preservation housing 504. A heat conduction filler 505 and a hollow tube 506 are arranged inside the heat preservation housing 504. The heat conduction filler 505 is located outside the hollow tube 506. The top and bottom of the hollow tube 506 are respectively fixedly connected to the heat preservation housing 504. Guide through holes communicating with the hollow tube 506 are respectively arranged at the top and bottom of the heat preservation housing 504. Through holes coaxial with and communicating with the guide through holes are arranged on the heat insulation layer 8, the floor heating layer 7 and the heat preservation brick layer 6. The hollow tube 506 is coaxially arranged with the heat conduction rod 502; the bottom of the fence vertical rod 503 is fixedly connected to the heat preservation housing 504; A waterproof board 510 is arranged inside the feed trough 4. A heat conduction board 508 is arranged at the bottom of the waterproof board 510. The bottom of the heat conduction board 508 is fixedly connected to a heat conduction column 507. The heat conduction column 507 passes through the bottom of the feed trough 4 and the top of the heat preservation housing 504. The bottom of the heat conduction column 507 is inserted into the heat conduction filler 505.

[0049] A plurality of fence vertical rods 503 are arranged side by side. A plurality of horizontally arranged cross rods 511 are fixedly connected between two adjacent fence vertical rods 503. The fence vertical rods 503 and the cross rods 511 together form the structure of a fence. The opening of the feed trough 4 faces upward, and food and feed are placed above the waterproof board 510.

[0050] As Figure 6 , when heat preservation of the feed trough 4 is not required, the heat conduction rod 502 is moved to the highest position. At this time, the bottom of the heat conduction rod 502 is located above the hollow tube 506. The bottom of the heat conduction rod 502, inside the hollow tube 506, inside the guide through hole and inside the through hole are air, which can avoid heat loss of the backfill soil 9.

[0051] As Figure 7 , when heat preservation of the feed trough 4 is required, the heat conduction rod 502 is moved to the lowest position. The heat conduction rod 502 passes through the hollow tube 506, the guide through hole and the through hole. The heat conduction rod 502 is in close contact with the hollow tube 506 and the heat transfer sleeve 512. Heat conduction silicone grease, coating, etc. can be arranged on the heat conduction rod 502 to improve the heat conduction efficiency. The backfill soil 9 heats the heat conduction rod 502 through the heat transfer sleeve 512. The heat conduction rod 502 then heats the hollow tube 506. The hollow tube 506 transfers the heat to the heat conduction filler 505. The heat conduction filler 505 thus heats the heat conduction column 507, the heat conduction board 508 and the waterproof board 510, forming a heat preservation effect on the feed in the feed trough 4.

[0052] The present invention directly takes the heat of the backfill soil 9 through the heat conduction rod 502 to heat preserve the feed trough 4, which can reduce the loss in the heat transfer process and improve the heat utilization efficiency. The integrated structure of the fence vertical rod 503 and the heat conduction rod 502 can also reduce the occupied area, forming a fence function while playing a heat collection function.

[0053] In addition, when the heat-conducting rod 502 is at the highest position, its top can be connected to the cover plate 501 by bolts to prevent it from falling. During the downward movement of the heat-conducting rod 502, the operating rod 503 can be threadedly connected to the top of the heat-conducting rod 502 to facilitate the downward movement of the heat-conducting rod 502. A T-shaped structure is formed between the waterproof plate 510 and the heat-conducting plate 508, and a sealing ring 509 is nested to enhance the waterproof performance. Inside the heat-insulating shed 3, multiple feed troughs 4, fences and heat-insulating mechanisms 5 can be arranged side by side. The heat-conducting filler 505 can be water, metal powder, graphite powder or heat-conducting ceramics, etc., to improve the heat transfer efficiency.

[0054] like Figures 2 - 4 A hollow seat 156 is fixedly arranged in the heat preservation box, and the two sides of the hollow seat 156 are solar heat exchange chambers and soil heat exchange chambers, and the interior of the hollow seat 156 is a common heat exchange chamber; the conversion mechanism includes an inner cylinder 157, a heat insulation filler 158, an outer cylinder 159, a motor 164, a bottom plate 168 and a medium flow pipe 160; The outer cylinder 159 is rotatably arranged in the hollow seat 156, and the outer cylinder 159 is sleeved on the inner cylinder 157. The heat insulating filler 158 is arranged between the outer cylinder 159 and the inner cylinder 157. The bottom of the outer cylinder 159 and the inner cylinder 157 are fixedly connected to the bottom plate 168, and the bottom plate 168 is connected to the rotating shaft of the motor 164; The two sides of the hollow seat 156 are respectively provided with openings 165 connecting the solar heat exchange chamber and the soil heat exchange chamber. The outer cylinder 159 is fixedly connected with a medium flow pipe 160 adapted to the opening 165. The medium flow pipe 160 passes through the outer cylinder 159, the heat insulation filler 158 and the inner cylinder 157. The second phase change energy storage medium 162 is arranged in the inner cylinder 157. The motor 164 is used to drive the bottom plate 168 to rotate so that the medium flow pipe 160 is connected to the opening 165 or the outer cylinder 159 covers the opening 165 .

[0055] The interior of the hollow seat 156 and the interior of the inner cylinder 157 are a common heat exchange chamber. The inner wall surface of the hollow seat 156 is an arc surface and fits the outer wall surface of the outer cylinder 159.

[0056] The motor 164 is preferably located at the bottom of the incubator. When the motor 164 rotates, the bottom plate 168, the inner cylinder 157 and the outer cylinder 159 rotate simultaneously, so that the medium flow tube 160 is staggered or aligned with the opening 165. When the medium flow tube 160 is aligned with the opening 165, as shown in FIG. Figures 2 - 3, the three chambers are connected, the second phase change energy storage medium 162 generates flow to fill the medium flow tube 160 and the opening 165, so that the first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 contact and fuse with each other to form an integral phase change energy storage medium, which can effectively improve the common heat conduction and heat storage function. Figures 4 - 5 When the opening 165 is offset from the medium flow pipe 160, the outer cylinder 159 blocks the opening 165, and forms a heat insulation function under the action of the heat insulation filler 158, thereby separating the three chambers.

[0057] The heat insulating filler 158 can be a high-efficiency heat insulating material such as aerogel, vacuum insulation panel or expanded perlite.

[0058] Furthermore, elastic pressure components are provided on the top of the solar heat exchange chamber and the soil heat exchange chamber, and the elastic pressure components include a spring 166 and a pressure plate 167. The spring 166 is located above the pressure plate 167, and the bottom of the pressure plate 167 abuts the first phase change energy storage medium 161 and the third phase change energy storage medium 163.

[0059] The spring 166 is preferably sleeved on a telescopic rod, and the two ends of the telescopic rod are fixedly connected to the pressure plate 167 and the top of the heat preservation box. The function of the spring 166 and the pressure plate 167 is to generate pressure to make the two pressure plates 167 squeeze the corresponding first phase change energy storage medium 161 and the third phase change energy storage medium 163, which can adapt to the volume change of the first phase change energy storage medium 161 and the third phase change energy storage medium 163, and can also adapt to the volume change of the phase change energy storage medium in the three chambers caused by the flow of materials during the rotation of the inner cylinder 157 and the outer cylinder 159. At the same time, it can also maintain the close contact state of the first phase change energy storage medium 161, the second phase change energy storage medium 162, and the third phase change energy storage medium 163 when the three chambers are connected.

[0060] In addition, two symmetrical feeding pipes 169 are provided on both sides of the heat preservation box, and matching channels for the feeding pipes 169 are provided on both sides of the hollow seat 156. The axes of the two feeding pipes 169 are perpendicular to the axes of the two medium circulation pipes 160, and corresponding valves are provided on the feeding pipes 169. When the motor 164 rotates to make the opening 165 staggered from the medium circulation pipe 160, the medium circulation pipe 160 is aligned with the two feeding pipes 169, so as to realize the addition and discharge of the second phase change energy storage medium 162. When the summer time is long and the solar energy heating system is not required to work in coordination with the soil heat storage system, the second phase change energy storage medium 162 can be discharged through the feeding pipe 169, and the solar energy heat exchange chamber and the soil heat exchange chamber are separated by air to further reduce heat loss. When necessary, a sufficient amount of the second phase change energy storage medium 162 can also be added through the feeding pipe 169 to fully fill the common heat exchange chamber.

[0061] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, variations, modifications, and substitutions made by those of ordinary skill in the art to the technical solutions of the present invention shall all fall within the protection scope determined by the claims of the present invention.

Claims

1. An integrated livestock shed with phase change energy storage and solar heating, characterized in that It includes a phase change energy storage system, a solar heating system, a soil heat storage system, and a heat-insulated shed (3); The solar heating system is connected to the soil heat storage system for transferring heat to the soil heat storage system and the phase change energy storage system; the soil heat storage system is located below the heat-insulated shed (3); the solar heating system is arranged on the top of the heat-insulated shed (3); The phase change energy storage system includes a heat-insulated box, a solar heat exchange coil (152), and a soil heat exchange coil (154); the heat-insulated box is divided into three chambers, namely a solar heat exchange chamber, a soil heat exchange chamber, and a common heat exchange chamber; a first phase change energy storage medium (161) and the solar heat exchange coil (152) are arranged in the solar heat exchange chamber, a third phase change energy storage medium (163) and the soil heat exchange coil (154) are arranged in the soil heat exchange chamber, and a second phase change energy storage medium (162) is arranged in the common heat exchange chamber; the solar heat exchange coil (152) is connected to the solar heating system, and the soil heat exchange coil (154) is connected to the soil heat storage system; A conversion mechanism is arranged in the common heat exchange chamber, and the conversion mechanism is used to connect or separate the three chambers to make the first phase change energy storage medium (161), the second phase change energy storage medium (162), and the third phase change energy storage medium (163) contact and conduct heat or be separated.

2. The livestock shed integrating phase change energy storage and solar heating according to claim 1, characterized in that, The phase change energy storage system further includes a heat-insulated water tank (14), a first heat-insulated water tank heat exchange coil (151), a second heat-insulated water tank heat exchange coil (153), and an intermediate heat exchange coil (155); Both ends of the first heat-insulated water tank heat exchange coil (151) are respectively communicated with a first water inlet pipe (145) and a first water return pipe (146), and the first water inlet pipe (145) and the first water return pipe (146) are respectively communicated with the heat-insulated water tank (14); the first heat-insulated water tank heat exchange coil (151) is located in the solar heat exchange chamber; Both ends of the second heat-insulated water tank heat exchange coil (153) are respectively communicated with a second water inlet pipe (143) and a second water return pipe (144), and the second water inlet pipe (143) and the second water return pipe (144) are respectively communicated with the heat-insulated water tank (14); the second heat-insulated water tank heat exchange coil (153) is located in the soil heat exchange chamber; Both ends of the intermediate heat exchange coil (155) are respectively communicated with a third water inlet pipe (141) and a third water return pipe (142), and the third water inlet pipe (141) and the third water return pipe (142) are respectively communicated with the heat-insulated water tank (14); the intermediate heat exchange coil (155) is located in the common heat exchange chamber.

3. The livestock shed integrating phase change energy storage and solar heating according to claim 2, characterized in that, The solar heating system includes a solar collector (2), the solar collector (2) is installed on the top of the heat-insulated shed (3), and the water inlet end and the water drainage end of the solar collector (2) are respectively communicated with both ends of the solar heat exchange coil (152) through a collector water inlet pipe (201) and a collector water return pipe (202); The soil heat storage system includes a heat-insulating foundation pit (12), a connecting pipe (11), and a soil heat storage pipe (10); backfill soil (9) and the soil heat storage pipe (10) are arranged in the heat-insulating foundation pit (12), the soil heat storage pipe (10) communicates with the connecting pipe (11), and two ends of the connecting pipe (11) communicate with two ends of the soil heat exchange coil pipe (154) through a soil heat storage water inlet pipe (111) and a soil heat storage water return pipe (112) respectively; Two ends of a second three-way valve (02) are arranged and communicated on the collector water inlet pipe (201), and a third end of the second three-way valve (02) communicates with the soil heat storage water inlet pipe (111); two ends of a third three-way valve (03) are arranged and communicated on the collector water return pipe (202), and a third end of the third three-way valve (03) communicates with the soil heat storage water return pipe (112); By changing the directions of the second three-way valve (02) and the third three-way valve (03), the solar collector (2) and the soil heat storage pipe (10) are made to form a circulating flow.

4. The livestock shed integrating phase change energy storage and solar heating according to claim 3, characterized in that, An insulating layer (8), a floor heating layer (7), and a heat-insulating brick layer (6) are sequentially arranged above the backfill soil (9) from bottom to top; A flow channel is arranged in the floor heating layer (7), one end of the flow channel communicates with a floor heating water inlet pipe (701), and the other end of the flow channel communicates with a floor heating water return pipe (702); a first flow dividing valve (05) is arranged and communicated on the soil heat storage water inlet pipe (111), and a third end of the first flow dividing valve (05) communicates with the floor heating water inlet pipe (701); a second flow dividing valve (06) is arranged and communicated on the soil heat storage water return pipe (112), and a third end of the second flow dividing valve (06) communicates with the floor heating water return pipe (702).

5. The livestock shed integrating phase change energy storage and solar heating according to claim 4, characterized in that, A feed trough (4) is arranged on the heat-insulating brick layer (6), a fence and a heat preservation mechanism (5) are arranged on the side of the feed trough (4), and the fence and the heat preservation mechanism (5) are connected to the soil heat storage system for heating the feed trough (4).

6. The livestock shed integrating phase change energy storage and solar heating according to claim 5, wherein The fence and the heat preservation mechanism (5) include fence vertical rods (503), heat conduction rods (502), and heat transfer sleeves (512); The fence vertical rods (503) are arranged vertically, the fence vertical rods (503) are of a hollow structure, and the heat conduction rods (502) are slidably arranged in the fence vertical rods (503); the bottom of the insulating layer (8) is fixedly connected to the heat transfer sleeve (512), the heat transfer sleeve (512) is adapted to the heat conduction rod (502), the heat transfer sleeve (512) is located in the backfill soil (9), and the heat conduction rod (502) is used for sliding into the heat transfer sleeve (512) and transferring part of the heat of the backfill soil (9) to the feed trough (4).

7. The livestock shed integrating phase change energy storage and solar heating according to claim 6, characterized in that The bottom of the feed trough (4) is fixedly connected to a heat preservation housing (504). A heat conduction filler (505) and a hollow tube (506) are arranged inside the heat preservation housing (504). The heat conduction filler (505) is located outside the hollow tube (506). The top and bottom of the hollow tube (506) are respectively fixedly connected to the heat preservation housing (504). Guide through holes communicating with the hollow tube (506) are respectively arranged at the top and bottom of the heat preservation housing (504). Through holes coaxial with and communicating with the guide through holes are arranged on the heat insulation layer (8), the floor heating layer (7) and the heat preservation brick layer (6). The hollow tube (506) is coaxially arranged with the heat conduction rod (502). The bottom of the fence vertical rod (503) is fixedly connected to the heat preservation housing (504). A waterproof board (510) is arranged inside the feed trough (4). A heat conduction board (508) is arranged at the bottom of the waterproof board (510). The bottom of the heat conduction board (508) is fixedly connected to a heat conduction column (507). The heat conduction column (507) passes through the bottom of the feed trough (4) and the top of the heat preservation housing (504). The bottom of the heat conduction column (507) is inserted into the heat conduction filler (505).

8. The livestock shed integrating phase change energy storage and solar heating according to claim 2, characterized in that, A hollow seat (156) is fixedly arranged inside the heat preservation box. The two sides of the hollow seat (156) are a solar energy heat exchange chamber and a soil heat exchange chamber, and the inside of the hollow seat (156) is a common heat exchange chamber. The conversion mechanism includes an inner cylinder (157), a heat insulation filler (158), an outer cylinder (159), a motor (164), a bottom plate (168) and a medium circulation pipe (160). The outer cylinder (159) is rotatably arranged inside the hollow seat (156). The outer cylinder (159) is sleeved on the inner cylinder (157). The heat insulation filler (158) is arranged between the outer cylinder (159) and the inner cylinder (157). The bottom of the outer cylinder (159) and the inner cylinder (157) is fixedly connected to the bottom plate (168). The bottom plate (168) is connected to the rotating shaft of the motor (164). Openings (165) communicating with the solar energy heat exchange chamber and the soil heat exchange chamber are respectively arranged on the two sides of the hollow seat (156). A medium circulation pipe (160) adapted to the opening (165) is fixedly connected to the outer cylinder (159). The medium circulation pipe (160) passes through the outer cylinder (159), the heat insulation filler (158) and the inner cylinder (157). A second phase change energy storage medium (162) is arranged inside the inner cylinder (157). The motor (164) is used to drive the bottom plate (168) to rotate, so that the medium circulation pipe (160) communicates with the opening (165) or the outer cylinder (159) covers the opening (165).

9. The livestock shed integrating phase change energy storage and solar heating according to claim 8, characterized in that Elastic pressure components are provided at the tops of the solar heat exchange chamber and the soil heat exchange chamber. The elastic pressure components include a spring (166) and a pressing plate (167). The spring (166) is located above the pressing plate (167), and the bottom of the pressing plate (167) abuts against the first phase change energy storage medium (161) and the third phase change energy storage medium (163).

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