CN112088780A - Automatic pig farm temperature and humidity adjusting system applying ground source heat pump technology - Google Patents
Automatic pig farm temperature and humidity adjusting system applying ground source heat pump technology Download PDFInfo
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- 238000005516 engineering process Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000003507 refrigerant Substances 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 238000007791 dehumidification Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 abstract description 17
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000009395 breeding Methods 0.000 abstract description 7
- 230000001488 breeding effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
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- 244000144977 poultry Species 0.000 abstract description 2
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- 230000009286 beneficial effect Effects 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
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- 238000009833 condensation Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
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- 230000003203 everyday effect Effects 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 230000006651 lactation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000008447 perception Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 230000003238 somatosensory effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
- A01K1/0076—Arrangement of heaters or heat exchangers
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
- A01K1/0082—Water misting or cooling systems
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/02—Pigsties; Dog-kennels; Rabbit-hutches or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/02—Pigsties; Dog-kennels; Rabbit-hutches or the like
- A01K1/035—Devices for use in keeping domestic animals, e.g. fittings in housings or dog beds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
- Y02A40/963—Off-grid food refrigeration
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Abstract
The invention relates to an automatic temperature and humidity adjusting system for a pig farm by applying a ground source heat pump technology, and belongs to the technical field of livestock and poultry breeding facilities. This pig farm humiture automatic regulating system of application ground source heat pump technique buries the heat exchange tube including heat pump set and U-shaped ground, bury the heat exchange tube with heat pump set's input is through first circulation pipeline intercommunication, heat pump set's circulation refrigerant pipeline is used for respectively carrying out the heat exchange with the second circulation pipeline in newborn stage piglet district, the third circulation pipeline in weaning stage piglet district and the fourth circulation pipeline in fattening pig district. Has the advantages that: the heating of the piglets in winter and the cooling of the piglets in summer are realized by the ground source heat pump; the temperature and the humidity are automatically adjusted in an energy-saving and environment-friendly manner; the U-shaped underground heat exchange tube technology does not damage an underground water system.
Description
Technical Field
The invention belongs to the technical field of livestock and poultry breeding facilities, and particularly relates to an automatic temperature and humidity adjusting system of a pig farm by applying a ground source heat pump technology.
Background
The pigs have different requirements on the temperature and the humidity of the environment in different growth stages, so that the disease probability, the feed conversion rate, the pork quality and the like of the pigs are influenced, and the economic benefits of farmers are directly related.
The pigs have different somatosensory critical temperatures in different growth stages, piglets in the newborn stage are 32-35 ℃, weaned piglets are 25-29 ℃, fattening pigs are 15-25 ℃, and the lowest limit of adult pigs is 12 ℃. The pig is in a proper temperature environment in the growth process, and the healthy growth of the pig is facilitated. Effect of lower critical temperature on live pig production: when the lower limit of the critical temperature of the piglets in the lactation period is 1 ℃, the metabolic energy needs to be improved by 2-5 percent; weaned pigs with the same feed intake reduce the growth by 1 g every day when the temperature is reduced by 1 ℃, and the feed needs to be added by 13 g every day. The daily gain of the growing pig is reduced by 15 g when the temperature is reduced by 1 ℃ from 20 ℃. The normal body temperature of the pig is maintained by increasing the metabolizable energy of 3 g of feed per kilogram of body weight of the pig per day. The growth and development of the pigs and the utilization rate of the feed are obviously different in different seasons. Under the condition of proper temperature (15-25 ℃), the pig has the fastest growth speed, the highest feed return and the best economic benefit
Pigs like to live in a comfortable and dry environment, if the pigsty is wet for a long time, the number of pathogenic bacteria is increased, the pigsty is easy to suffer from various diseases, and various factors can cause the pigsty to be too wet in the breeding process. In hot and rainy seasons in summer, the pigsty is wet for a long time due to high air humidity; in summer, the pigsty is flushed by frequent cold water for cooling the pigsty; and the humidity caused by long-term sealing of the pigsty due to heat preservation in the pigsty in winter is too high, and the like.
At present, due to the limitations of initial investment, operation and the like, a pigsty usually adopts a large-house type breeding mode, and suitable temperature and humidity environments cannot be provided for pigs in different growth stages respectively, so that the modern breeding industry provides higher technical requirements for temperature and humidity regulation of the pigsty environment.
Disclosure of Invention
The invention provides an automatic temperature and humidity adjusting system of a pig farm applying a ground source heat pump technology to solve the technical problems, and the system can be used for heating piglets in winter and cooling the piglets in summer; the temperature and the humidity are automatically adjusted in an energy-saving and environment-friendly manner; the U-shaped underground heat exchange tube technology does not damage an underground water system.
The technical scheme for solving the technical problems is as follows: this pig farm humiture automatic regulating system who uses ground source heat pump technique includes heat pump set and the buried heat exchange tube of U-shaped ground, bury the heat exchange tube with heat pump set's input is through first circulation pipeline intercommunication, heat pump set's circulation refrigerant pipeline is used for respectively carrying out the heat exchange with the second circulation pipeline in newborn stage piglet district, the third circulation pipeline in weaning stage piglet district and the fourth circulation pipeline in fattening pig district.
Has the advantages that:
(1) the heating of the piglets in winter and the cooling of the piglets in summer are realized by the ground source heat pump; the temperature and the humidity are automatically adjusted in an energy-saving and environment-friendly manner;
(2) in the U-shaped geothermal well technology, circulating water is always circulated in a closed system consisting of a U-shaped buried pipe, a circulating water pump and a condenser/evaporator of a heat pump unit, so that heat transfer between the ground and the deep underground is realized. Therefore, compared with the traditional scheme, the method has the following advantages: on one hand, underground water is not pumped, and an underground water system is not damaged; on one hand, the circulating water quality is controllable, the problems of scaling, corrosion, sludge blockage and the like of circulating water can not occur, and the operation reliability of the ground source heat pump system is improved.
Further, a first circulating pump is installed on the pipeline of the first circulating pipeline.
The beneficial effect of adopting the further scheme is that: the water of the U-shaped buried pipe is extracted, the circulation effect of heat exchange is realized, and energy conservation and environmental protection are achieved.
Further, heat exchange is performed between the circulating refrigerant pipeline and the second circulating pipeline through a first heat exchanger, heat exchange is performed between the circulating refrigerant pipeline and the third circulating pipeline through a second heat exchanger, and heat exchange is performed between the circulating refrigerant pipeline and the fourth circulating pipeline through a third heat exchanger.
The beneficial effect of adopting the further scheme is that: circulating water in the pigsty and a refrigerant in the ground source heat pump unit exchange heat through the heat exchanger, so that the circulating water is used as hot water for heating in winter and is used as chilled water for cooling in summer.
Further, the heat exchanger is a plate heat exchanger.
The beneficial effect of adopting the further scheme is that: high heat exchange efficiency, convenient installation and disassembly and long service life.
Furthermore, electronic expansion valves are arranged on the circulating refrigerant pipeline between the heat pump unit and the first heat exchanger, the circulating refrigerant pipeline between the heat pump unit and the second heat exchanger and the circulating refrigerant pipeline between the heat pump unit and the third heat exchanger, first temperature sensors are arranged in the first heat exchanger, the second heat exchanger and the third heat exchanger, the first temperature sensors are in one-to-one correspondence with the electronic expansion valves, and the first temperature sensors are respectively electrically connected with the corresponding electronic expansion valves.
The beneficial effect of adopting the further scheme is that: the opening degree of the electronic expansion valves of different heat exchangers can be respectively adjusted, circulating water with different temperatures is obtained in different plate exchangers, and therefore the environmental temperatures of different functional areas in the pigsty are adjusted.
The piglet feed is characterized by further comprising a dehumidification system, wherein the dehumidification system is arranged in the newborn stage piglet area, the weaning stage piglet area and the fattening pig area.
The beneficial effect of adopting the further scheme is that: improve the moist environment of pig house, and play the effect of supplementary cooling.
Furthermore, the dehumidification system comprises a chilled water circulation pipeline and a fourth heat exchanger, the circulating refrigerant pipeline of the heat pump unit exchanges heat with the chilled water circulation pipeline through the fourth heat exchanger, and the chilled water circulation pipeline is arranged in the newborn-stage piglet area, the weaning-stage piglet area and the fattening pig area.
The beneficial effect of adopting the further scheme is that: the chilled water prepared by the heat pump unit and the fourth heat exchanger in summer realizes the dehumidification function in the pigsty through the chilled water circulation pipeline, and plays a role in auxiliary cooling to improve the humid environment.
Further, the second circulation pipeline, the third circulation pipeline and the chilled water circulation pipeline are all provided with second circulation water pumps.
The beneficial effect of adopting the further scheme is that: the circulating water in the pigsty area can be recycled, the energy is saved, and the use is convenient.
Furthermore, electric regulating valves are arranged at the output end of the second circulating pipeline, the output end of the third circulating pipeline and the output end of the third circulating pipeline, second temperature sensors are arranged in the newborn-stage piglet area, the weaning-stage piglet area and the fattening pig area, the electric regulating valves are in one-to-one correspondence with the second temperature sensors, and the electric regulating valves are electrically connected with the corresponding second temperature sensors.
The beneficial effect of adopting the further scheme is that: the temperature is detected through a temperature sensor in the pigsty area, and the opening degree of the electric adjusting valve is controlled through an electric signal according to the temperature detected in the pigsty.
Further, the second circulation pipeline, the third circulation pipeline and the third circulation pipeline are buried pipes.
The beneficial effect of adopting the further scheme is that: through the temperature and the flow of control cold water, guarantee that pig house ground can not the condensation to reach and give the pig house cooling, avoid the risk of falling ill that the high humid environment leads to simultaneously.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a newborn stage piglet area; 2. weaning stage piglet area; 3. a pig fattening area; 4. a second circulating water pump; 5. an electric control valve; 6. a first heat exchanger; 7. an electronic expansion valve; 8. a heat pump unit; 9. a first circulation pump; 10. burying the heat exchange tube; 11. a first circulation line; 12. a chilled water circulation pipe; 13. a circulating refrigerant line; 14. a second circulation line; 15. a third circulation line; 16. a pig fattening area; 17. a second heat exchanger; 18. a third heat exchanger; 19. and a fourth heat exchanger.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the pigsty area of the present embodiment includes a newborn-stage piglet area 1, a weaning-stage piglet area 2, and a fattening-pig area 3, and the number of the newborn-stage piglet area 1, the weaning-stage piglet area 2, and the fattening-pig area 3 is not limited, and may be provided in plurality. This embodiment provides an use ground source heat pump technology's pig farm humiture automatic regulating system, includes: the heat pump unit 8 and the U-shaped buried heat exchange tube 10, the buried heat exchange tube 10 is communicated with the input end of the heat pump unit 8 through a first circulation pipeline 11, and a circulation refrigerant pipeline 13 of the heat pump unit 8 is respectively used for exchanging heat with a second circulation pipeline 14 of the newborn-stage piglet area 1, a third circulation pipeline 15 of the weaning-stage piglet area 2 and a fourth circulation pipeline 15 of the fattening pig area 3.
The application provides an automatic temperature and humidity adjusting system of a pig farm applying a ground source heat pump technology, which realizes heating of piglets in winter and cooling of piglets in summer through a ground source heat pump unit 8; energy-saving and environment-friendly automatic temperature and humidity regulation. In the geothermal well technology of the U-shaped underground heat exchange tube 10, circulating water is always circulated in a closed system formed by the U-shaped underground heat exchange tube 10, the first circulating water pump 9 and a condenser/evaporator of the heat pump unit 8, so that heat transfer between the ground and the deep underground is realized, and the geothermal well technology has the following advantages compared with the traditional scheme: on one hand, underground water is not pumped, and an underground water system is not damaged; on one hand, the circulating water quality is controllable, the problems of scaling, corrosion, sludge blockage and the like of circulating water can not occur, and the operation reliability of the ground source heat pump system is improved.
Preferably, in this embodiment, the first circulation pump 9 is installed on the pipeline of the first circulation pipeline, and pumps water in the U-shaped buried pipe 10, so as to realize the circulation function of heat exchange, and achieve energy saving and environmental protection.
Preferably, in this embodiment, heat exchange is performed between the circulating refrigerant pipeline 13 and the second circulating pipeline 14 through the first heat exchanger 6, heat exchange is performed between the circulating refrigerant pipeline 13 and the third circulating pipeline 15 through the second heat exchanger 17, heat exchange is performed between the circulating refrigerant pipeline 13 and the fourth circulating pipeline 16 through the third heat exchanger 18, and heat exchange is performed between circulating water in the pig house and a refrigerant in the ground source heat pump unit 8 through the heat exchangers, so that the circulating water is used as hot water for heating in winter and is chilled water for cooling in summer. The heat exchanger is a plate heat exchanger, so that the heat exchange efficiency is high, the installation and the disassembly are convenient, and the service life is long.
Preferably, in this embodiment, electronic expansion valves 7 are disposed on a circulating refrigerant pipeline 13 between the heat pump unit 8 and the first heat exchanger 6, a circulating refrigerant pipeline 13 between the heat pump unit 8 and the second heat exchanger 17, and a circulating refrigerant pipeline 13 between the heat pump unit 8 and the third heat exchanger 18, first temperature sensors are disposed in the first heat exchanger 6, the second heat exchanger 17, and the third heat exchanger 18, the first temperature sensors are disposed in one-to-one correspondence with the electronic expansion valves 7, the first temperature sensors are respectively electrically connected with the corresponding electronic expansion valves 7, and can respectively adjust the opening degrees of the electronic expansion valves 7 of different heat exchangers, so as to obtain circulating water with different temperatures in different plate exchangers, thereby adjusting the ambient temperatures of different functional areas in the pig house.
Preferably, in the embodiment, the piglet breeding house further comprises a dehumidification system, the dehumidification system is arranged in the newborn stage piglet area 1, the weaning stage piglet area 2 and the fattening pig area 3 and comprises a chilled water circulation pipeline 12 and a fourth heat exchanger 19, a circulation refrigerant pipeline 13 of the heat pump unit 8 exchanges heat with the chilled water circulation pipeline 12 through the fourth heat exchanger 19, the chilled water circulation pipeline 12 is arranged in the newborn stage piglet area 1, the weaning stage piglet area 1 and the fattening pig area 3, the chilled water prepared by the heat pump unit in summer realizes a dehumidification function in the pig house through the chilled water circulation pipeline, and meanwhile, the auxiliary cooling effect is achieved, and the humid environment is improved. The moisture content of the high-humidity environment in the pigsty is reduced in a condensation mode, and the pigsty is particularly suitable for high-temperature and high-humidity areas in the south of China. The length and the pipe diameter of the pipeline system are determined according to the summer high-humidity working condition of the location.
Example 2
As shown in fig. 1, the pigsty area of the present embodiment includes a newborn-stage piglet area 1, a weaning-stage piglet area 2, and a fattening-pig area 3, and the number of the newborn-stage piglet area 1, the weaning-stage piglet area 2, and the fattening-pig area 3 is not limited, and may be provided in plurality. This embodiment provides an use ground source heat pump technology's pig farm humiture automatic regulating system, includes: the heat pump unit 8 and the U-shaped buried heat exchange tube 10, the buried heat exchange tube 10 is communicated with the input end of the heat pump unit 8 through a first circulation pipeline 11, and a circulation refrigerant pipeline 13 of the heat pump unit 8 is respectively used for exchanging heat with a second circulation pipeline 14 of the newborn-stage piglet area 1, a third circulation pipeline 15 of the weaning-stage piglet area 2 and a fourth circulation pipeline 15 of the fattening pig area 3.
The application provides an automatic temperature and humidity adjusting system of a pig farm applying a ground source heat pump technology, which realizes heating of piglets in winter and cooling of piglets in summer through a ground source heat pump unit 8; energy-saving and environment-friendly automatic temperature and humidity regulation. In the geothermal well technology of the U-shaped underground heat exchange tube 10, circulating water is always circulated in a closed system formed by the U-shaped underground heat exchange tube 10, the first circulating water pump 9 and a condenser/evaporator of the heat pump unit 8, so that heat transfer between the ground and the deep underground is realized, and the geothermal well technology has the following advantages compared with the traditional scheme: on one hand, underground water is not pumped, and an underground water system is not damaged; on one hand, the circulating water quality is controllable, the problems of scaling, corrosion, sludge blockage and the like of circulating water can not occur, and the operation reliability of the ground source heat pump system is improved.
Preferably, in this embodiment, the first circulation pump 9 is installed on the pipeline of the first circulation pipeline, and pumps water in the U-shaped buried pipe 10, so as to realize the circulation function of heat exchange, and achieve energy saving and environmental protection.
Preferably, in this embodiment, heat exchange is performed between the circulating refrigerant pipeline 13 and the second circulating pipeline 14 through the first heat exchanger 6, heat exchange is performed between the circulating refrigerant pipeline 13 and the third circulating pipeline 15 through the second heat exchanger 17, heat exchange is performed between the circulating refrigerant pipeline 13 and the fourth circulating pipeline 16 through the third heat exchanger 18, and heat exchange is performed between circulating water in the pig house and a refrigerant in the ground source heat pump unit 8 through the heat exchangers, so that the circulating water is used as hot water for heating in winter and is chilled water for cooling in summer. The heat exchanger is a plate heat exchanger, so that the heat exchange efficiency is high, the installation and the disassembly are convenient, and the service life is long.
Preferably, in this embodiment, electronic expansion valves 7 are disposed on a circulating refrigerant pipeline 13 between the heat pump unit 8 and the first heat exchanger 6, a circulating refrigerant pipeline 13 between the heat pump unit 8 and the second heat exchanger 17, and a circulating refrigerant pipeline 13 between the heat pump unit 8 and the third heat exchanger 18, first temperature sensors are disposed in the first heat exchanger 6, the second heat exchanger 17, and the third heat exchanger 18, the first temperature sensors are disposed in one-to-one correspondence with the electronic expansion valves 7, the first temperature sensors are respectively electrically connected with the corresponding electronic expansion valves 7, and can respectively adjust the opening degrees of the electronic expansion valves 7 of different heat exchangers, so as to obtain circulating water with different temperatures in different plate exchangers, thereby adjusting the ambient temperatures of different functional areas in the pig house.
Preferably, in the embodiment, the piglet breeding house further comprises a dehumidification system, the dehumidification system is arranged in the newborn stage piglet area 1, the weaning stage piglet area 2 and the fattening pig area 3 and comprises a chilled water circulation pipeline 12 and a fourth heat exchanger 19, a circulation refrigerant pipeline 13 of the heat pump unit 8 exchanges heat with the chilled water circulation pipeline 12 through the fourth heat exchanger 19, the chilled water circulation pipeline 12 is arranged in the newborn stage piglet area 1, the weaning stage piglet area 1 and the fattening pig area 3, the chilled water prepared by the heat pump unit in summer realizes a dehumidification function in the pig house through the chilled water circulation pipeline, and meanwhile, the auxiliary cooling effect is achieved, and the humid environment is improved. The moisture content of the high-humidity environment in the pigsty is reduced in a condensation mode, and the pigsty is particularly suitable for high-temperature and high-humidity areas in the south of China. The length and the pipe diameter of the pipeline system are determined according to the summer high-humidity working condition of the location.
Preferably, in this embodiment, the second circulation pipeline 14, the third circulation pipeline 15, the third circulation pipeline 16 and the chilled water circulation pipeline 12 are all provided with the second circulation water pump 4, so that circulation of the circulating water in the piggery area is realized, energy is saved, and the use is convenient.
Preferably, in this embodiment, the output end of the second circulation pipeline 14, the output end of the third circulation pipeline 15, and the output end of the third circulation pipeline 16 are all provided with an electric control valve 5, the newborn-stage piglet area 1, the weaning-stage piglet area 2, and the fattening pig area 3 are all provided with a second temperature sensor, the electric control valves 5 and the second temperature sensors are arranged in a one-to-one correspondence manner, the electric control valves 5 are electrically connected with the corresponding second temperature sensors, the electric control valve 5 is installed on the output end of the pre-buried pipe of each pigsty functional area, and the opening degree of the electric control valve 5 can be adjusted according to the temperature in the pigsty, so as to reach the expected pigsty temperature, and if the environmental temperature difference is larger, an electric signal is sent to control the electric control valve 5 and adjust the opening degree of the electric control valve.
Preferably, in this embodiment, the second circulation pipeline 14, the third circulation pipeline 15 and the third circulation pipeline 16 are buried pipes, the pipe diameters, lengths, forms and the like of the buried pipes are determined according to the specific conditions of different functional partitions in the pigsty, and the ground of the pigsty is ensured not to be condensed by controlling the temperature and flow of cold water, so that the temperature of the pigsty is reduced, and meanwhile, the risk of diseases caused by a high-humidity environment is avoided. The rest of the present embodiment is the same as that disclosed in embodiment 1.
When the environmental low-temperature working condition in winter is lower than 5 ℃, the ground source heat pump unit 8 is automatically started according to the detected temperature and humidity in the pigsty, the circulating water in the U-shaped buried pipe 10 is circulated, the circulating water with lower temperature in the evaporator of the heat pump unit 8, such as 5 ℃, and underground water, soil and the like in the underground deep layer generate wall-type heat exchange through the U-shaped pipe, so that the temperature of the circulating water is increased, such as the outlet water temperature is 25 ℃, and then the circulating water enters the evaporator of the heat pump unit 8, the heat absorbed from the underground is transferred to the heat pump unit, and the heat transfer is realized. The heat pump unit 8 prepares a refrigerant through fluorine circulation, and hot water with different temperatures is prepared through the control of the plate heat exchanger. For example, the water supply temperature to the pigsty in the piglet area is 50 ℃, the water supply temperature to the pigsty in the weaning piglet area is 40 ℃, and the water supply temperature to the pigsty in the fattening pig area is 30 ℃. An electric adjusting valve 5 is installed at the water outlet of the embedded pipe of each pigsty functional area, and linkage automatic adjustment of temperature and humidity sensors in the pigsty can be realized. If the temperature in the pigsty is too low, opening the electric regulating valve 5; and if the temperature in the pigsty is too high, the opening degree of the electric regulating valve 5 is reduced. The heat in the functional area of the pigsty is supplied by controlling the opening of the electric regulating valve 5, so that the temperature in the pigsty can meet the requirement.
The ventilation system can be properly opened to the pig house during winter, improves the air quality in the pig house, because the pig house adopts the ground heating mode, consequently the ventilation of short time can not reduce the ambient temperature of pig perception in the pig house, guarantees that the pig lives all the time in the ambient temperature who suits.
In summer, the ground source heat pump unit 8 is automatically started according to the temperature and humidity detection parameters in the pigsty, the circulation of circulating water in the U-shaped buried pipe 10 is started, the circulating water with higher temperature, such as 40 ℃, in the condenser of the heat pump unit 8 and underground water, soil and the like in the underground deep layer generate wall type heat exchange through a U-shaped pipe, so that the temperature of the circulating water is reduced, such as the outlet water temperature is reduced by 25 ℃, and then the circulating water enters the condenser of the heat pump unit 8 to absorb the heat of a refrigerant in the condenser into circulating water with the temperature of 40 ℃ so as to realize heat transfer. The heat pump unit 8 prepares a refrigerant through fluorine circulation, and prepares circulating water with different temperatures through the joint and automatic control of the electronic expansion valve 7EEV and the plate heat exchanger. For example, the water supply temperature to the pigsty in the piglet area is 20 ℃, the water supply temperature to the pigsty in the weaning piglet area is 15 ℃, and the water supply temperature to the pigsty in the fattening pig area is 10 ℃. An electric adjusting valve 5 is installed at the water outlet of the embedded pipe of each pigsty functional area, and linkage automatic adjustment of temperature and humidity sensors in the pigsty can be realized. If the temperature in the pigsty is too low, the opening degree of the electric regulating valve 5 is reduced; and if the temperature in the pigsty is too high, the opening degree of the electric regulating valve 5 is increased. The opening of the electric regulating valve 5 is controlled to regulate the cooling capacity supplied to the functional area of the pigsty, so that the temperature in the pigsty can meet the requirement. In addition, according to the detection humiture parameter in the pig house, adjust the aperture of electrical control valve 5, guarantee that the ground temperature of pig house is higher than dew point temperature, avoid the long-term moist scene of pig house.
Under the working condition of high temperature and high humidity in summer, for example, the temperature of the dry bulb in the environment exceeds 32 ℃ and the relative humidity exceeds 85%, the ground source heat pump unit 8 is automatically started to prepare cold water with lower temperature, for example, cold water with 5 ℃ flows through the chilled water circulating pipeline 12 reserved in the pigsty, water vapor in high-humidity air in the pigsty is condensed, and generated condensed water is timely discharged through the drainage system, so that the environmental temperature of the pigsty is reduced on the one hand, and the humidity in the pigsty is reduced on the other hand. Simultaneously, the temperature of the ground of the pigsty is higher than the dew point temperature of the environment through the control and adjustment of the water temperature in the underground embedded pipe of the pigsty, so that the purpose of cooling the pigsty is achieved, and the long-term humid environment which is not caused by condensation on the ground of the pigsty is guaranteed.
Has the advantages that: the heating of the piglets in winter and the cooling of the piglets in summer are realized by the ground source heat pump; the temperature and the humidity are automatically adjusted in an energy-saving and environment-friendly manner; in the U-shaped geothermal well technology, circulating water is always circulated in a closed system consisting of a U-shaped buried pipe, a circulating water pump and a condenser/evaporator of a heat pump unit, so that heat transfer between the ground and the deep underground is realized. Therefore, compared with the traditional scheme, the method has the following advantages: on one hand, underground water is not pumped, and an underground water system is not damaged; on one hand, the circulating water quality is controllable, the problems of scaling, corrosion, sludge blockage and the like of circulating water can not occur, and the operation reliability of the ground source heat pump system is improved.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an use ground source heat pump technology's pig farm humiture automatic regulating system which characterized in that includes:
the heat pump set (8) and the U-shaped buried heat exchange tube (10), the buried heat exchange tube (10) is communicated with the input end of the heat pump set (8) through a first circulation pipeline (11), and a circulation refrigerant pipeline (13) of the heat pump set (8) is respectively used for exchanging heat with a second circulation pipeline (14) of a newborn piglet area (1), a third circulation pipeline (15) of a weaning piglet area (2) and a fourth circulation pipeline (15) of a fattening pig area (3).
2. The automatic temperature and humidity regulating system for the pig farm applying the ground source heat pump technology as claimed in claim 1, wherein the first circulating pump (9) is installed on the first circulating pipeline (11).
3. The system for automatically adjusting the temperature and the humidity of the pig farm by applying the ground source heat pump technology according to claim 1, wherein the circulating refrigerant pipeline (13) exchanges heat with the second circulating pipeline (14) through a first heat exchanger (6), the circulating refrigerant pipeline (13) exchanges heat with the third circulating pipeline (15) through a second heat exchanger (17), and the circulating refrigerant pipeline (13) exchanges heat with the fourth circulating pipeline (16) through a third heat exchanger (18).
4. The automatic temperature and humidity regulating system for the pig farm applying the ground source heat pump technology as claimed in claim 3, wherein the heat exchanger (6) is a plate heat exchanger.
5. The automatic temperature and humidity regulating system for pig farm according to claim 3, characterized in that electronic expansion valves (7) are arranged on the circulating refrigerant pipeline (13) between the heat pump unit (8) and the first heat exchanger (6), the circulating refrigerant pipeline (13) between the heat pump unit (8) and the second heat exchanger (17) and the circulating refrigerant pipeline (13) between the heat pump unit (8) and the third heat exchanger (18), first temperature sensors are arranged in the first heat exchanger (6), the second heat exchanger (17) and the third heat exchanger (18), the first temperature sensors are arranged in one-to-one correspondence with the electronic expansion valves (7), and the first temperature sensors are respectively electrically connected with the corresponding electronic expansion valves (7).
6. The automatic temperature and humidity adjusting system for the pig farm applying the ground source heat pump technology according to claim 5, characterized by further comprising a dehumidifying system, wherein the dehumidifying system is arranged in the newborn-stage piglet area (1), the weaning-stage piglet area (2) and the fattening-pig area (3).
7. The automatic temperature and humidity regulating system for the pig farm applying the ground source heat pump technology as claimed in claim 6, wherein the dehumidification system comprises a chilled water circulation pipeline (12) and a fourth heat exchanger (19), the circulation refrigerant pipeline (13) of the heat pump unit (8) exchanges heat with the chilled water circulation pipeline (12) through the fourth heat exchanger (19), and the chilled water circulation pipeline (12) is arranged in the newborn-stage piglet area (1), the weaning-stage piglet area (2) and the fattening-pig area (3).
8. The automatic pig farm temperature and humidity regulating system applying the ground source heat pump technology as claimed in claim 7, wherein the second circulating pipeline (14), the third circulating pipeline (15), the third circulating pipeline (16) and the chilled water circulating pipeline (12) are all provided with a second circulating water pump (4).
9. The automatic temperature and humidity regulating system for the pig farm applying the ground source heat pump technology as claimed in claim 8, wherein electric regulating valves (5) are respectively arranged at the output ends of the second circulating pipeline (14), the third circulating pipeline (15) and the third circulating pipeline (16), second temperature sensors are respectively arranged in the newborn-stage piglet area (1), the weaning-stage piglet area (2) and the fattening pig area (3), the electric regulating valves (5) are arranged in one-to-one correspondence with the second temperature sensors, and the electric regulating valves (5) are electrically connected with the corresponding second temperature sensors.
10. The system for automatically adjusting the temperature and the humidity of the pig farm by using the ground source heat pump technology as claimed in any one of claims 1 to 9, wherein the second circulating pipeline (14), the third circulating pipeline (15) and the third circulating pipeline (16) are buried pipes.
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Cited By (1)
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| CN114279104A (en) * | 2021-11-15 | 2022-04-05 | 珠海格力电器股份有限公司 | Cold and heat source unit for breeding house and breeding house environment control system |
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