Geothermal energy heating system suitable for factory circulating water shrimp culture

Abstract

The utility model discloses a geothermal energy heating system suitable for factory circulating water shrimp culture, which comprises a geothermal energy heat taking system, a ground source heat pump system, a water distribution main pipe, a shrimp culture pond bottom heating system, a water storage pond bottom heating system, a shrimp culture shed indoor heating heat exchange system, a water return main pipe and a heating water circulating pump, the water supply main pipe is connected with the input end of the shrimp culture pond bottom heating system, the input end of the water storage pond bottom heating system and the input end of the shrimp culture shed indoor heating and heat exchange system through pipelines. An efficient, environment-friendly and economical solution is provided for factory-like circulating water shrimp culture, and the method is an important technical innovation for promoting the aquaculture industry to develop towards the green and sustainable direction.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal energy, in particular to a geothermal energy heating system suitable for factory-scale circulating water shrimp farming. Background Art

[0002] Factory-scale recirculating aquaculture is a breeding model that transforms traditional fisheries into industrialized ones. It uses modern science and technology to carry out high-density and intensive production of aquatic products, and can achieve the aquaculture industry's business goals of small land occupation, low pollution, low risk and high efficiency.

[0003] Shrimp meat is rich in protein, various vitamins, and trace elements such as calcium, phosphorus, and selenium. It has antioxidant and immunity-enhancing effects. It is considered to be the best substitute for pork and has huge market demand.

[0004] At present, the factory-based farming of white shrimp in the fully enclosed recirculating water farming method mainly includes shrimp greenhouses, shrimp ponds, circulating water treatment and other auxiliary facilities. The most commonly used material for shrimp ponds is PP board. Shrimp ponds are generally round, with a diameter of 8m and an effective depth of 1 to 1.5m. The water volume of a single shrimp pond is about 50 to 75m. 3 A shrimp farm consists of dozens or even hundreds of shrimp ponds. Since the water in the shrimp ponds emits heat into the shrimp shed, the water in the shrimp ponds needs to be heated to maintain the water temperature.

[0005] Due to high-density shrimp farming, impurities in the pond water cannot be naturally degraded, so the water in the shrimp pond needs to be treated continuously. Aquaculture water treatment includes sedimentation, filtration, and removal of soluble harmful substances. According to the water quality, the water change rate of the shrimp pond is 100-200% per day. For large-scale shrimp farms, a water storage tank should be set up to store the qualified water treated by the above links and the fresh water added from outside in the water storage tank. Then, according to the physiological requirements of shrimp, it is disinfected, temperature-adjusted, and oxygenated, and then transported to each breeding pond for repeated use. Therefore, the water in the water storage tank needs to be heated.

[0006] In summary, for off-season shrimp farming in winter in cold northern regions, the water in the shrimp pond will radiate heat to the greenhouse, and the water in the shrimp pond will drop in the circulating water treatment process, sewage discharge, water replenishment and other links. Maintaining the temperature of the aquaculture water is a necessary condition to ensure safe and efficient shrimp farming. In order to achieve the best farming effect, the water temperature of the shrimp pond for white shrimp is generally maintained between 28 and 30°C, and the indoor temperature of the shrimp shed is not lower than 10°C. For off-season shrimp farming in winter in cold northern regions, electric heating is often used, which consumes huge energy.

[0007] Therefore, it is urgent to develop a geothermal heating system suitable for high-density circulating water shrimp farming, using geothermal energy to provide heat for shrimp ponds, thereby achieving the goal of energy conservation and emission reduction and improving economic benefits. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides a geothermal heating system suitable for factory-scale circulating water shrimp farming, which solves the problem of large energy consumption due to the frequent use of electric heating in off-season shrimp farming in winter in cold northern regions.

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: a geothermal heating system suitable for factory-scale circulating water shrimp farming, including a geothermal heat extraction system, a ground source heat pump system, a water supply main pipe, a shrimp pond bottom heating system, a water storage tank bottom heating system, a shrimp shed indoor heating and heat exchange system, a return water main pipe, and a heating water circulation pump;

[0010] The geothermal heat pump system includes a heat pump unit, in which an evaporator and a condenser are arranged. The evaporator is connected to the output end of the geothermal energy heat extraction system through an evaporator inlet pipeline, and is connected to the input end of the geothermal energy heat extraction system through an evaporator outlet pipeline. The condenser is connected to the water supply main pipe through the condenser outlet pipeline. The water supply main pipe is respectively connected to the input ends of the shrimp pond bottom heating system, the water reservoir bottom heating system and the shrimp shed indoor heating and heat exchange system through pipelines. The output ends of the shrimp pond bottom heating system, the water reservoir bottom heating system and the shrimp shed indoor heating and heat exchange system are connected to the input end of the return water main pipe, and the output end of the return water main pipe is connected to the condenser inlet pipeline through a heating water circulation pump.

[0011] Preferably, the geothermal energy heat extraction system includes several geothermal wells, in which buried pipes are arranged through soil filling, the input end of the buried pipes is connected to the buried pipe water distributor, and the output end is connected to the buried pipe water collector, the buried pipe water collector is connected to the evaporator inlet pipeline through a geothermal water supply pipeline, a geothermal water circulation pump is provided on the geothermal water supply pipeline, and the buried pipe water distributor is connected to the evaporator outlet pipeline through a geothermal water return pipeline.

[0012] Preferably, the shrimp pond bottom heating system includes a shrimp pond heating water supply pipe, a shrimp pond bottom heater, and a shrimp pond heating return pipe. One end of the shrimp pond heating water supply pipe is connected to the output end of the water supply mother pipe, and the other end is connected to the input end of the shrimp pond bottom heater. One end of the shrimp pond heating return pipe is connected to the output end of the shrimp pond bottom heater, and the other end is connected to the input end of the return water mother pipe.

[0013] Preferably, the water tank bottom heating system includes a water tank heating water supply pipe, a water tank bottom heater, and a water tank heating return pipe. One end of the water tank heating water supply pipe is connected to the output end of the water supply mother pipe, and the other end is connected to the input end of the water tank bottom heater. One end of the water tank heating return pipe is connected to the output end of the water tank bottom heater, and the other end is connected to the input end of the return water mother pipe.

[0014] Preferably, the indoor heating and heat exchange system of the shrimp farming shed includes a heating system water supply pipe, a shrimp farming shed indoor heating system heat exchanger, and a heating system return pipe. One end of the heating system water supply pipe is connected to the output end of the water supply mother pipe, and the other end is connected to the primary side input end of the shrimp farming shed indoor heating system heat exchanger. One end of the heating system return pipe is connected to the primary side output end of the shrimp farming shed indoor heating system heat exchanger, and the other end is connected to the return water mother pipe input end.

[0015] Preferably, the secondary side input end of the heat exchanger of the indoor heating system of the shrimp shed is connected to the return water pipeline of the radiator of the shrimp shed, and the output end is connected to the water supply pipeline of the radiator of the shrimp shed.

[0016] Preferably, the shrimp pond bottom heater and the water reservoir bottom heater both adopt a stainless steel coil structure.

[0017] Preferably, the buried pipe is a single-loop U-shaped pipe made of HDPE material.

[0018] Beneficial Effects

[0019] The utility model provides a geothermal heating system suitable for industrial circulating water shrimp farming, which has the following beneficial effects:

[0020] This system directly utilizes geothermal energy, effectively extracting underground constant-temperature heat energy through geothermal wells and buried pipe networks, reducing dependence on external energy sources and significantly reducing operating costs. It is especially suitable for shrimp farms that require continuous heating.

[0021] As the core, the heat pump unit not only seamlessly connects with the geothermal heating system, but also serves the heating of shrimp ponds and water storage tanks as well as the indoor heating of shrimp sheds, realizing multiple uses of one system and improving resource utilization and the overall efficiency of the system.

[0022] The ground source heat pump system controls the water temperature and indoor temperature to provide the most suitable growth environment for shrimp, which helps to improve the breeding yield and shrimp quality, while avoiding the temperature fluctuation problem of traditional heating methods.

[0023] This patent sets up a water storage tank, which can collect the water from many shrimp ponds after sedimentation, filtration and other processes, and centrally carry out disinfection, temperature adjustment, and oxygenation, and then transport it to each shrimp pond, which is beneficial to ensure the water quality and water temperature, and provide guarantee conditions for healthy shrimp farming.

[0024] This patent has unified the design of heat generation and heat use, using geothermal energy as the heat generation link, making the best use of clean energy and reducing primary energy consumption. In the heat use link, the hot water used in the shrimp pond, water storage tank and shrimp shed heating system is provided by the water distribution main pipe, and the return water of each heat use link is collected by the return water main pipe for unified management.

[0025] The shrimp pond bottom heating system, the water reservoir bottom heating system and the indoor heating and heat exchange system all use stainless steel coil structure, which ensures good heat exchange efficiency and long service life. The stainless steel material is corrosion-resistant and suitable for aquaculture environment.

[0026] The system is designed with a closed-loop water cycle to ensure efficient recycling of water resources, reduce water consumption and pollution emissions, and comply with the environmental protection concept of sustainable development.

[0027] In summary, the geothermal heating system provides an efficient, environmentally friendly and economical solution for factory-scale circulating water shrimp farming by integrating key technologies such as geothermal energy utilization, circulating water heating, and indoor environment control. It is an important technological innovation to promote the green and sustainable development of the aquaculture industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model.

[0029] In the figure: 100, geothermal collection system; 101, buried pipe manifold; 102, geothermal well; 103, buried pipe; 104, buried pipe collector; 105, geothermal water supply pipeline; 105a, geothermal water circulation pump; 106, geothermal water return pipeline; 200, heat pump unit system; 201, heat pump unit; 201a, evaporator; 201b, condenser; 202, evaporator inlet pipeline; 203, evaporator outlet pipeline; 204, condenser inlet pipeline; 205, condenser outlet pipeline; 301, water supply main pipe; 302, shrimp pond bottom heater; 303, reservoir bottom heater; 304, shrimp shed indoor heating system heat exchanger; 305, return water main pipe; 306, heating water circulation pump. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 The utility model provides a technical solution: a geothermal heating system suitable for factory-scale circulating water shrimp farming, including a geothermal heat extraction system, a ground source heat pump system, a water supply main pipe 301, a shrimp pond bottom heating system, a water storage tank bottom heating system, a shrimp shed indoor heating and heat exchange system, a return water main pipe 305, and a heating water circulation pump 306;

[0032] The geothermal heat pump system includes a heat pump unit 201, in which an evaporator 201a and a condenser 201b are arranged. The evaporator 201a is connected to the output end of the geothermal heat extraction system through an evaporator inlet pipeline 202, and is connected to the input end of the geothermal heat extraction system through an evaporator outlet pipeline 203. The condenser 201b is connected to a water supply mother pipe 301 through a condenser outlet pipeline 205. The water supply mother pipe 301 is respectively connected to the input ends of a shrimp pond bottom heating system, a water reservoir bottom heating system, and an indoor heating and heat exchange system for shrimp sheds through pipelines. The output ends of the shrimp pond bottom heating system, the water reservoir bottom heating system, and the indoor heating and heat exchange system for shrimp sheds are connected to the input end of a return water mother pipe 305. The output end of the return water mother pipe 305 is connected to the condenser inlet pipeline 204 through a heating water circulation pump 306.

[0033] This embodiment is further configured as follows: the geothermal energy heat extraction system includes a plurality of geothermal wells 102, wherein a buried pipe 103 is provided in the geothermal well 102 through soil filling, wherein the input end of the buried pipe 103 is connected to a buried pipe water distributor 101, and the output end is connected to a buried pipe water collector 104, wherein the buried pipe water collector 104 is connected to an evaporator inlet pipeline 202 through a geothermal water supply pipeline 105, wherein a geothermal water circulation pump 105a is provided on the geothermal water supply pipeline 105, and wherein the buried pipe water distributor 101 is connected to the evaporator outlet pipeline 203 through a geothermal water return pipeline 106.

[0034] This embodiment is further configured as follows: the shrimp pond bottom heating system includes a shrimp pond heating water supply pipe, a shrimp pond bottom heater 302, and a shrimp pond heating return pipe, one end of the shrimp pond heating water supply pipe is connected to the output end of the water supply mother pipe 301, and the other end is connected to the input end of the shrimp pond bottom heater 302; one end of the shrimp pond heating return pipe is connected to the output end of the shrimp pond bottom heater 302, and the other end is connected to the input end of the return water mother pipe 305.

[0035] This embodiment is further configured such that the water tank bottom heating system includes a water tank heating water supply pipe, a water tank bottom heater, and a water tank heating return pipe. One end of the water tank heating water supply pipe is connected to the output end of the water supply mother pipe 301, and the other end is connected to the input end of the water tank bottom heater. One end of the water tank heating return pipe is connected to the output end of the water tank bottom heater, and the other end is connected to the input end of the return water mother pipe 305.

[0036] This embodiment is further configured as follows: the indoor heating and heat exchange system of the shrimp farming shed includes a heating system water supply pipe, a shrimp farming shed indoor heating system heat exchanger 304, and a heating system return pipe. One end of the heating system water supply pipe is connected to the output end of the water supply mother pipe 301, and the other end is connected to the primary side input end of the shrimp farming shed indoor heating system heat exchanger 304. One end of the heating system return pipe is connected to the primary side output end of the shrimp farming shed indoor heating system heat exchanger 304, and the other end is connected to the return water mother pipe 305 input end.

[0037] This embodiment is further configured such that the secondary side input end of the shrimp shed indoor heating system heat exchanger 304 is connected to the shrimp shed radiator return pipe, and the output end is connected to the shrimp shed radiator water supply pipe.

[0038] The present embodiment is further configured such that the shrimp pond bottom heater 302 and the water reservoir bottom heater both adopt a stainless steel coil structure.

[0039] The present embodiment is further configured such that the buried pipe 103 is a single-loop U-shaped pipe made of HDPE material.

[0040] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0041] Embodiment: A geothermal heating system suitable for factory-scale circulating water shrimp farming mainly includes a geothermal heat extraction system, a ground source heat pump system, a water supply main pipe 301, a shrimp pond bottom heating system, a water reservoir bottom heating system, a shrimp shed indoor heating system heat exchange system, a return water main pipe 305, and a heating water circulation pump 306.

[0042] The geothermal collection system 100 includes a buried pipe manifold 101, a geothermal well 102, a buried pipe 103, a buried pipe collector 104, a geothermal water supply pipeline 105, a geothermal water circulation pump 105a, and a geothermal water return pipeline 106. According to different geological conditions, the drilling depth of the geothermal well 102 is 120 to 300 meters. The underground soil temperature at this depth is basically not affected by the season and is basically constant. The spacing between each geothermal well 102 is controlled to be more than 4.5 meters. The buried pipe 103 is a single-loop U-shaped pipe, which is placed in the geothermal well 102, and the gap is filled with soil. The buried pipe 103 is made of HDPE (high-density polyethylene), which has good durability and corrosion resistance and can operate stably for a long time. A single-loop U-shaped buried pipe 103 is placed in each geothermal well 102, and the commonly used pipe diameter is DN 20 / 25 / 32 / 40mm, the flow rate in the pipe is controlled within 1.2m / s, water flows through the buried pipe 103, hereinafter referred to as working water, the working water exchanges heat with the underground soil through the buried pipe 103, and the final water temperature can reach 15-25°C. The number of buried pipes 103 is calculated based on the heat load of the shrimp shed, and generally several to several hundred are required. Therefore, a buried pipe water distributor 101 is set. When the water distributor 101 is connected to each buried pipe 103, a butterfly valve and a balancing valve are provided to ensure that the pressure of each buried pipe is balanced. After the working water exchanges heat with the soil through the buried pipe 103, it enters the buried pipe water collector 104, and then passes through the geothermal water supply pipeline 105 and the geothermal water circulating water pump 105a to supply the heat pump unit system 200. The heat pump unit system 200 returns water and passes through the geothermal water return pipeline 106 to the buried pipe water distributor 101 to continue to supply water to the buried pipe.

[0043] The heat pump unit system 200 includes a heat pump unit 201 and supply and return water pipelines. The heat pump unit 201 includes a heat pump unit evaporator 201a and a heat pump unit condenser 201b. The supply and return water pipelines include an evaporator inlet pipeline 202, an evaporator outlet pipeline 203, a condenser inlet pipeline 204, and a condenser outlet pipeline 205.

[0044] During the heating condition, the function of the heat pump unit is to transfer the heat in the working water to the shrimp pond and shrimp shed. The working water enters the evaporator 201a of the heat pump unit through the evaporator inlet pipe 202. In the evaporator, the heat of the working water is extracted and the water temperature is reduced. Then, it passes through the evaporator outlet pipe 203 and the geothermal water return pipe 106, enters the buried pipe water distributor 101, and then passes through the buried pipe 103. The working water is heated again by the underground soil and enters the buried pipe water collector 104, and then passes through the geothermal water supply pipe 105, the geothermal water circulation pump 105a, and the evaporator inlet pipe 202 to supply water to the evaporator 201a of the heat pump unit, and the cycle is repeated.

[0045] The temperature of the heating water for the shrimp pond, water storage tank and shrimp shed is set at 55°C. The heating water absorbs heat in the condenser 201b of the heat pump unit and is heated to 55°C. Then, it is divided into three routes through the condenser outlet pipe 205 and the water supply main pipe 301, and supplies water to the shrimp pond bottom heater 302, the water storage tank bottom heater 303 and the shrimp shed heating system heat exchanger 304 respectively. The return water of these three items enters the return water main pipe 305, and then enters the heat pump unit condenser 201b through the heating water circulation pump 306 and the condenser inlet pipe 204, and the heating water is heated to 55°C again, and the cycle is repeated.

[0046] The shrimp pond bottom heating system and the water reservoir bottom heating system are equipped with stainless steel coils at the bottom of the shrimp pond and the water reservoir. The heat exchange area of ​​the coils is calculated in the specific application project.

[0047] The heat exchange system of the indoor heating system of the shrimp shed is equipped with a plate heat exchanger. After the heating water exchanges heat with the secondary side circulating water of the heating, the secondary side circulating water of the heating provides hot water for the radiator of the shrimp shed to heat the shrimp shed.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geothermal heating system suitable for industrial circulating water shrimp farming, characterized in that: It includes a geothermal heat extraction system, a ground source heat pump system, a water supply main pipe (301), a shrimp pond bottom heating system, a water storage tank bottom heating system, a shrimp shed indoor heating and heat exchange system, a return water main pipe (305), and a heating water circulation pump (306); The geothermal heat pump system comprises a heat pump unit (201), wherein the heat pump unit (201) is provided with an evaporator (201a) and a condenser (201b), wherein the evaporator (201a) is connected to the output end of the geothermal heat extraction system via an evaporator inlet pipeline (202), and is connected to the input end of the geothermal heat extraction system via an evaporator outlet pipeline (203), and the condenser (201b) is connected to the water supply main pipe (301) via a condenser outlet pipeline (205). The water supply main pipe (301) is connected to the shrimp pond bottom heating system, the water storage tank bottom heating system and the shrimp shed indoor heating and heat exchange system through pipelines, respectively; the output ends of the shrimp pond bottom heating system, the water storage tank bottom heating system and the shrimp shed indoor heating and heat exchange system are connected to the input end of the return water main pipe (305); the output end of the return water main pipe (305) is connected to the condenser inlet pipe (204) through a heating water circulation pump (306).

2. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 1, characterized in that: The geothermal energy heat extraction system comprises a plurality of geothermal wells (102), wherein a buried pipe (103) is arranged in the geothermal well (102) by means of soil burial, wherein the input end of the buried pipe (103) is connected to a buried pipe water distributor (101), and the output end is connected to a buried pipe water collector (104), wherein the buried pipe water collector (104) is connected to an evaporator inlet pipe (202) via a geothermal water supply pipeline (105), wherein a geothermal water circulation pump (105a) is arranged on the geothermal water supply pipeline (105), and wherein the buried pipe water distributor (101) is connected to an evaporator outlet pipe (203) via a geothermal water return pipeline (106).

3. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 1, characterized in that: The shrimp pond bottom heating system comprises a shrimp pond heating water supply pipe, a shrimp pond bottom heater (302), and a shrimp pond heating return pipe. One end of the shrimp pond heating water supply pipe is connected to the output end of the water supply mother pipe (301), and the other end is connected to the input end of the shrimp pond bottom heater (302). One end of the shrimp pond heating return pipe is connected to the output end of the shrimp pond bottom heater (302), and the other end is connected to the input end of the return water mother pipe (305).

4. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 3, characterized in that: The water tank bottom heating system comprises a water tank heating water supply pipe, a water tank bottom heater (303), and a water tank heating return pipe. One end of the water tank heating water supply pipe is connected to the output end of the water supply mother pipe (301), and the other end is connected to the input end of the water tank bottom heater (303). One end of the water tank heating return pipe is connected to the output end of the water tank bottom heater (303), and the other end is connected to the input end of the return water mother pipe (305).

5. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 1, characterized in that: The indoor heating and heat exchange system of the shrimp farm comprises a heating system water supply pipe, a shrimp farm indoor heating system heat exchanger (304), and a heating system return pipe. One end of the heating system water supply pipe is connected to the output end of the water supply mother pipe (301), and the other end is connected to the primary side input end of the shrimp farm indoor heating system heat exchanger (304). One end of the heating system return pipe is connected to the primary side output end of the shrimp farm indoor heating system heat exchanger (304), and the other end is connected to the input end of the return water mother pipe (305).

6. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 5, characterized in that: The secondary side input end of the shrimp shed indoor heating system heat exchanger (304) is connected to the shrimp shed radiator return pipe, and the output end is connected to the shrimp shed radiator water supply pipe.

7. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 4, characterized in that: The shrimp pond bottom heater (302) and the water reservoir bottom heater (303) both adopt a stainless steel coil structure.

8. A geothermal heating system suitable for industrial circulating water shrimp farming according to claim 2, characterized in that: The buried pipe (103) is a single-loop U-shaped pipe made of HDPE material.

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