CN219735650U - Cold storage terrace anti-freezing expansion parallel refrigerating system utilizing exhaust working medium heat - Google Patents
Cold storage terrace anti-freezing expansion parallel refrigerating system utilizing exhaust working medium heat Download PDFInfo
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- CN219735650U CN219735650U CN202320984533.2U CN202320984533U CN219735650U CN 219735650 U CN219735650 U CN 219735650U CN 202320984533 U CN202320984533 U CN 202320984533U CN 219735650 U CN219735650 U CN 219735650U
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- 238000007710 freezing Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 230000008014 freezing Effects 0.000 claims abstract description 19
- 238000010257 thawing Methods 0.000 claims abstract description 16
- 230000008961 swelling Effects 0.000 claims abstract description 12
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 30
- 238000005057 refrigeration Methods 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 208000001034 Frostbite Diseases 0.000 claims 1
- 239000002689 soil Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 206010042674 Swelling Diseases 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005399 mechanical ventilation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 235000013594 poultry meat Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model provides a parallel refrigerating system for freezing and swelling prevention of a cold storage terrace by utilizing exhaust working medium heat, wherein an exhaust gas collecting pipe (12) is divided into an exhaust branch pipe A (21) and a defrosting exhaust branch pipe B (22) after passing through a stop valve, the exhaust branch pipe A (21) is respectively connected with an inlet of an evaporative condenser (4) and a plate exchange heat exchange device (5) through a condenser inlet pipe (41) and a plate exchange right inlet pipe (51), a circulating water tank (6) is connected with the plate exchange heat exchange device (5) through a pipeline, the plate exchange heat exchange device (5) is connected with an inlet of a terrace heating calandria (7) through a pipeline, and an outlet of the terrace heating calandria (7) is connected to an inlet of a circulating water tank (6) through a water tank inlet pipe (61). The system utilizes the heat of the high-temperature high-pressure gaseous medium discharged by the parallel refrigerating unit (1), not only can heat and prevent freezing and swelling of the cold storage terrace, but also can further reduce the work load of the evaporative condenser (4).
Description
Technical Field
The utility model relates to the technical field of refrigeration houses, in particular to a parallel refrigeration system for preventing freezing and swelling of a refrigeration house terrace by utilizing exhaust working medium heat.
Background
The refrigeration house is used as an artificial refrigeration device, has important significance for the constant temperature and constant humidity storage of semi-finished products and finished products such as foods, dairy products, meat, aquatic products, poultry, fruits and vegetables, beverages, flowers, green plants, tea, medicines, chemical raw materials, electronic instrument and instrument, tobacco, alcoholic beverages and the like, and particularly has higher requirements on the quality of the stored matters in the refrigeration house along with the remarkable improvement of the quality of life of people and the pursuit of higher quality of life.
In the construction freezer in-process, the thermal-insulated layer that suits with the storehouse temperature has all been laid to the freezer terrace, but thermal-insulated layer can not completely isolate thermal transfer, only can reduce the heat transfer process between freezer storehouse body and the terrace, after the freezer cooling, will produce great temperature difference between freezer storehouse body temperature and the terrace soil layer, leads to the internal cold volume of freezer storehouse to be passed to the terrace soil layer by the storehouse body for terrace soil layer temperature reduces. The temperature of the cold storage body is at 0 ℃ or below throughout the year, if the terrace soil layer cannot be supplemented with heat, the isothermal line at 0 ℃ is gradually moved into the terrace soil layer, and due to the temperature difference between the cold storage body and the terrace soil layer and the formation of ice crystals in the terrace soil layer, the vapor partial pressure difference generated between the upper layer and the lower layer of the soil enables vapor in the lower layer of the soil to continuously move upwards, so that the frozen body is gradually enlarged. In addition, as time goes by, the isotherm at 0 ℃ continuously goes deep into the soil layer, the frozen ice body in the soil layer also continuously increases the volume expansion force generated by freezing water, and finally the frozen bulge of the terrace or the frozen expansion of the foundation is caused, so that the crisis building structure is safe.
At present, three measures of overhead freezing expansion, ventilation freezing expansion and electric heating freezing expansion of the domestic refrigeration house terrace are generally adopted, wherein the overhead freezing expansion of the refrigeration house terrace is that the refrigeration house terrace is overhead, and although the freezing expansion effect of the terrace of the measure is good, the cost of the terrace is high, and excellent drainage facilities are required to be equipped; the ventilation and anti-freezing expansion is to embed ventilation pipes in the terrace for natural ventilation or mechanical ventilation, the arrangement of the natural ventilation pipes is parallel to the annual main ventilation, and the ventilation and anti-freezing expansion is only suitable for small refrigerators with outdoor temperature of not lower than 0 ℃ or lower than 0 ℃ in winter and short time, and the mechanical ventilation has large investment and high operation cost; the electric heating antifreezing expansion is characterized in that an electric heating steel wire mesh is buried in a heat insulation layer of the terrace, and although the measure has great advantages in construction, operation management and the like, the electric heating antifreezing expansion has higher power consumption and is only suitable for occupying less than 500m 2 Is a small-sized refrigeration house.
In view of the fact that a large amount of cold energy and heat exchange exists in the running process of the parallel refrigerating unit and the refrigeration house system, exhaust working medium heat of the parallel refrigerating unit is mainly discharged to the external environment through the condenser, and serious waste of the part of heat is caused. Therefore, how to efficiently utilize the exhaust working medium heat of the parallel refrigerating unit to heat the cold storage terrace so as to prevent the cold storage terrace from freezing and bulging or the foundation from frost heaving is a technical problem to be solved by the cold storage and the parallel refrigerating unit.
Disclosure of Invention
Aiming at the technical defects, the utility model provides a parallel refrigerating system for preventing freezing and swelling of a refrigeration house terrace by utilizing exhaust working medium heat in order to solve the technical problems of freezing and swelling of the refrigeration house terrace or foundation.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the parallel refrigerating system comprises a parallel refrigerating unit, a horizontal liquid storage device, an evaporative condenser, a plate heat exchange device, a circulating water tank and a terrace heating calandria, wherein an exhaust port of a compressor of the parallel refrigerating unit enters an exhaust gas collecting pipe through an exhaust branch pipe respectively, the exhaust gas collecting pipe is divided into an exhaust branch pipe A and a defrosting exhaust branch pipe B after passing through a stop valve, the defrosting exhaust branch pipe B is connected with an evaporator and then is connected with a defrosting return air header of the horizontal liquid storage device through a pipeline, the exhaust branch pipe A is connected with an inlet of the evaporative condenser and the plate heat exchange device through a condenser inlet pipe and a plate heat exchange right inlet pipe respectively, the evaporative condenser is connected with the horizontal liquid storage device through a condenser outlet pipe, the horizontal liquid storage device is connected with the evaporator and then is connected with a return air collecting pipe of the parallel refrigerating unit through a pipeline, the circulating water tank is connected with the plate heat exchange device through a pipeline, the plate heat exchange device is connected with an inlet of the terrace heating calandria water tank through a water tank inlet pipe, and an outlet of the heating calandria circulating water tank is connected to an inlet of the circulating water tank.
Further, the plate heat exchange device comprises a plate heat exchanger, a liquid viewing mirror, a gas-liquid separator, a temperature sensor and an electromagnetic valve, wherein an inlet at the left upper part of the plate heat exchanger is connected with a left inlet pipe of the plate heat exchanger, an outlet at the left lower part of the plate heat exchanger is connected with a left outlet pipe of the plate heat exchanger through a stop valve, an inlet at the right lower part of the plate heat exchanger is connected with a right inlet pipe of the plate heat exchanger through a stop valve, the electromagnetic valve is arranged on the right inlet pipe of the plate heat exchanger, an outlet at the right upper part of the plate heat exchanger is connected with the right outlet pipe of the plate heat exchanger, the liquid viewing mirror, the stop valve and the gas-liquid separator are sequentially arranged on the right outlet pipe of the plate heat exchanger, a gas outlet of the gas-liquid separator is connected with the condenser inlet pipe through a plate heat exchange-liquid reservoir branch pipe, and a liquid outlet of the gas-liquid separator is connected with the horizontal liquid reservoir through a plate heat exchange-liquid reservoir branch pipe.
Further, the circulating water tank is connected with the inlet at the upper left side of the plate heat exchanger through a plate-exchanging left inlet pipe, the circulating water pump is arranged on the plate-exchanging left inlet pipe and is close to the circulating water tank, and the stop valve is arranged on the plate-exchanging left inlet pipe and is close to the plate heat exchanger.
Further, the terrace heating calandria adopt aluminium calandria or plastics calandria, a plurality of terrace heating calandria evenly lays in the freezer terrace, evenly installs by a plurality of terrace temperature detecting element in the freezer terrace, the import and the exit of every terrace heating calandria all install the stop valve.
Further, a pressure-drainage detection device and a one-way valve are arranged on the condenser inlet pipe, the pressure-drainage detection device is close to the evaporative condenser, the pressure-drainage detection device comprises a pressure detection unit, a drainage unit and an exhaust unit, the pressure detection unit, the drainage unit and the exhaust unit are arranged on the condenser inlet pipe in a parallel connection mode, and the one-way valve is arranged at the front end of the pressure-drainage detection device along the medium flow direction in the condenser inlet pipe.
Further, the circulating water pump, the terrace temperature detection unit, the temperature sensor and the electromagnetic valve are all connected with a Programmable Logic Controller (PLC) of a control cabinet in the parallel refrigerating unit, the terrace temperature detection unit collects terrace temperature signals and transmits the terrace temperature signals to the PLC, the PLC transmits start or stop commands to the circulating water pump, the temperature sensor collection board changes the medium temperature signals in the left outlet pipe and transmits the start or stop commands to the PLC, and the PLC transmits the start or stop commands to the electromagnetic valve.
Drawings
FIG. 1 is a system diagram of the present utility model;
fig. 2 is a system diagram of a plate heat exchange device of the present utility model.
Marked in the figure as: 1: a parallel refrigerating unit; 11: a return air collecting pipe; 12: an exhaust gas collecting pipe; 21: an exhaust branch pipe I; 22: a defrosting exhaust branch pipe B; 3: a horizontal reservoir; 31: a liquid supply header; 32: defrosting return air collecting pipe; 4: an evaporative condenser; 41: a condenser inlet pipe; 411: pressure-bleed detection means; 412: a one-way valve; 42: a condenser outlet pipe; 5: a plate heat exchange device; 51: plate-changing right inlet pipe; 511: an electromagnetic valve; 52: the right outlet pipe is replaced by a plate; 521: plate change-reservoir manifold; 522: plate change-condenser branch pipes; 523: a gas-liquid separator; 524: a liquid viewing mirror; 53: plate-changing left inlet pipe; 54: the plate is replaced with a left outlet pipe; 541: a temperature sensor; 55: a plate heat exchanger; 6: a circulation water tank; 61: a water tank inlet pipe; 62: a circulating water pump; 7: floor heating calandria.
Description of the embodiments
In order to make the technical problems, technical solutions and implementation effects of the present utility model clearer, an embodiment of the present utility model will be further described with reference to fig. 1 and 2, where in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "both ends", "one end", "the other end" and the like are directions or positional relationships based on those shown in the drawings, which are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.
Referring to fig. 1 and 2, the parallel refrigeration system for freezing and swelling prevention of a cold storage terrace using exhaust working medium heat comprises a parallel refrigeration unit 1, a horizontal liquid storage device 3, an evaporative condenser 4, a plate heat exchange device 5, a circulating water tank 6 and a terrace heating calandria 7, wherein a compressor exhaust port of the parallel refrigeration unit 1 enters an exhaust gas collecting pipe 12 through an exhaust branch pipe respectively, the exhaust gas collecting pipe 12 is divided into an exhaust branch pipe A21 and a defrosting exhaust branch pipe B22 through a stop valve, the defrosting exhaust branch pipe B22 is connected with an evaporator and then is connected with a defrosting return air header 32 of the horizontal liquid storage device 3 through a pipeline, the exhaust branch pipe A21 is connected with an inlet of the evaporative condenser 4 and the plate heat exchange device 5 through a condenser inlet pipe 41 and a plate heat exchange right inlet pipe 51 respectively, the evaporative condenser 4 is connected with the horizontal liquid storage device 3 through a condenser outlet pipe 42, the horizontal liquid storage device 3 is connected with the evaporator through a liquid supply header 31 and then is connected with a return air collecting pipe 11 of the parallel refrigeration unit 1 through a pipeline, the circulating water tank 6 is connected with the plate heat exchange device 5 through a pipeline, the plate heat exchange device 5 is connected with the plate heat exchange device 5 through a pipeline and the plate heat exchange device 7 through the pipeline and then is connected with the water tank heating calandria water tank 7 through an inlet of the plate heat exchange device 6 and the inlet of the horizontal heat exchange device is connected with the water tank 7 through the inlet pipe 7.
In the parallel refrigeration system, the high-temperature high-pressure gaseous medium discharged by the parallel refrigeration unit 1 respectively enters the evaporator, the evaporative condenser 4 and the plate heat exchange device 5 through the defrosting exhaust branch pipe B22, the condenser inlet pipe 41 and the plate heat exchange right inlet pipe 51, wherein the gaseous medium enters the evaporative condenser 4 after cold and heat exchange of the high-temperature high-pressure gaseous medium entering the plate heat exchange device 5, and the liquid medium flows back to the horizontal liquid reservoir 3. The heat of the high-temperature high-pressure gaseous medium is only partially discharged to the external environment through the evaporative condenser 4, the rest of the heat not only carries out defrosting treatment on the evaporator, but also heats and prevents freezing and swelling treatment on the cold storage terrace, so that the waste heat of the parallel refrigerating system is fully utilized, and the energy utilization rate of the system is improved.
As a preferred embodiment, the plate heat exchange device 5 includes a plate heat exchanger 55, a liquid viewing mirror 524, a gas-liquid separator 523, a temperature sensor 541 and an electromagnetic valve 511, where an upper left inlet of the plate heat exchanger 55 is connected to a left plate inlet pipe 53, a lower left outlet of the plate heat exchanger 55 is connected to a left plate outlet pipe 54 through a stop valve, a lower right inlet of the plate heat exchanger 55 is connected to a right plate inlet pipe 51 through a stop valve, the electromagnetic valve 511 is mounted on the right plate inlet pipe 51, an upper right outlet of the plate heat exchanger 55 is connected to a right plate outlet pipe 52, the liquid viewing mirror 524, the stop valve and the gas-liquid separator 523 are sequentially mounted on the right plate outlet pipe 52, and a gas outlet of the gas-liquid separator 523 is connected to the condenser inlet pipe 41 through a plate-condenser branch pipe 522, and a liquid outlet of the gas-liquid separator 523 is connected to the horizontal reservoir 3 through a plate-reservoir branch pipe 521.
The plate heat exchange device 5 can be integrated on a rack of the parallel refrigerating unit 1, can be externally arranged in a machine room outside the parallel refrigerating unit 1, and is provided with stop valves on four connecting port pipelines at the left and right sides of the plate heat exchanger 55, so that the plate heat exchanger can be replaced or maintained timely and conveniently; meanwhile, in order to further improve the heat exchange efficiency of the plate heat exchange device 5 and the floor heating calandria 7, the circulating medium of the circulating water tank 6 can be liquid water, propylene glycol or unfrozen liquid, and a filter is additionally arranged behind the circulating water pump 62 of the circulating water tank 6, so that the circulating medium of the circulating water tank 6 is filtered, scaling or blockage of the plate heat exchange device 5 and the floor heating calandria 7 is prevented, and the heat exchange efficiency of the plate heat exchange device 5 and the floor heating calandria 7 is improved.
As a preferred embodiment, the circulating water tank 6 is connected with the inlet at the upper left side of the plate heat exchanger 55 through the plate-changing left inlet pipe 53, the circulating water pump 62 is installed on the plate-changing left inlet pipe 53 and is close to the circulating water tank 6, the stop valve is installed on the plate-changing left inlet pipe 53 and is close to the plate heat exchanger 55, wherein the circulating water pump 62 can be a variable-frequency motor driven water pump, and the water supply flow and the pressure of the circulating water pump 62 are adjusted according to the number of the floor heating calandria 7, so that the flow velocity of the circulating medium in the floor heating calandria 7 is in a design value range, and the heat exchange effect between the floor heating calandria 7 and the floor is ensured.
As a preferred embodiment, the floor heating calandria 7 adopts an aluminum calandria or a plastic calandria, a plurality of floor heating calandria 7 is evenly laid in a refrigeration house floor, a stop valve is evenly installed in the refrigeration house floor by a plurality of floor temperature detection units, the inlet and the outlet of each floor heating calandria 7 are all provided with stop valves, the plurality of floor temperature detection units monitor the temperature of the floor in real time, and the water supply flow and the pressure of the circulating water pump 62 are controlled by a Programmable Logic Controller (PLC) of a control cabinet in the parallel refrigerating unit 1.
As a preferred embodiment, the condenser inlet pipe 41 is provided with a pressure-drain detection device 411 and a one-way valve 412, the pressure-drain detection device 411 is close to the evaporative condenser 4, the pressure-drain detection device 411 includes a pressure detection unit, a drain unit and an exhaust unit, the pressure detection unit, the drain unit and the exhaust unit are installed on the condenser inlet pipe 41 in parallel, and the one-way valve 412 is installed at the front end of the pressure-drain detection device 411 along the medium flowing direction in the condenser inlet pipe 41.
The pressure detection unit of the pressure-leakage detection device 411 detects the pressure state of the inlet of the evaporative condenser 4 in real time, and reduces the pressure of the inlet of the evaporative condenser 4 through the leakage unit and the exhaust unit, so as to avoid damage to the evaporative condenser 4 caused by excessive air inlet pressure of the evaporative condenser 4; the check valve 412 of the condenser inlet tube 41 prevents the backflow of the circulating medium in the evaporative condenser 4.
As a preferred embodiment, the circulating water pump 62, the terrace temperature detection unit, the temperature sensor 541 and the electromagnetic valve 511 are all connected with a programmable logic controller PLC of a control cabinet in the parallel refrigeration unit 1, the terrace temperature detection unit collects terrace temperature signals and transmits the terrace temperature signals to the programmable logic controller PLC, the programmable logic controller PLC transmits a start or stop command to the circulating water pump 62, the temperature sensor 541 collects medium temperature signals in the left pipe 54 and transmits the medium temperature signals to the programmable logic controller PLC, and the programmable logic controller PLC transmits the start or stop command to the electromagnetic valve 511.
By adopting the technical scheme, the high-temperature high-pressure gaseous medium discharged by the parallel refrigerating unit 1 is subjected to defrosting treatment on the evaporator of the refrigerator through the defrosting exhaust branch pipe B22, and enters the evaporative condenser 4 and the plate heat exchange device 5 through the condenser inlet pipe 41 and the plate heat exchange right inlet pipe 51 respectively, after the high-temperature high-pressure gaseous medium in the plate heat exchange device 5 exchanges cold and heat with the medium of the circulating water tank 6, the high-temperature high-pressure gaseous medium presents a gaseous state and a liquid state, the gaseous circulating medium after passing through the gas-liquid separator 523 enters the evaporative condenser 4, so that the condensation efficiency of the evaporative condenser 4 is improved, and the liquid circulating medium flows back into the horizontal liquid reservoir 3; and the medium of the circulating water tank 6 is heated by the high-temperature high-pressure gaseous medium and then enters the terrace heating calandria 7, and the refrigeration house terrace is heated and subjected to anti-freezing expansion treatment. According to the technical scheme, the heat of the high-temperature high-pressure gaseous medium discharged by the parallel refrigerating unit 1 can be fully utilized, the refrigeration house terrace can be heated and subjected to anti-freezing expansion treatment, the work load of the evaporative condenser 4 is further reduced, and the condensation efficiency of the evaporative condenser 4 is improved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. Utilize hot freezer terrace of exhaust working medium to prevent frostbite and expand parallelly connected refrigerating system, including parallelly connected refrigerating unit (1), horizontal reservoir (3), evaporative condenser (4), board heat transfer device (5), circulation tank (6) and terrace heating calandria (7), its characterized in that: the compressor exhaust port of the parallel refrigerating unit (1) respectively enters an exhaust gas collecting pipe (12) through an exhaust branch pipe, the exhaust gas collecting pipe (12) is divided into an exhaust branch pipe A (21) and a defrosting exhaust branch pipe B (22) through a stop valve, the defrosting exhaust branch pipe B (22) is connected with an evaporator and then is connected with a defrosting return air collecting pipe (32) of the horizontal type liquid storage device (3) through a pipeline, the exhaust branch pipe A (21) is respectively connected with an inlet of the evaporative condenser (4) and a plate heat exchange device (5) through a condenser inlet pipe (41) and a plate change right inlet pipe (51), the evaporative condenser (4) is connected with the horizontal type liquid storage device (3) through a condenser outlet pipe (42), the horizontal type liquid storage device (3) is connected with the return air collecting pipe (11) of the parallel refrigerating unit (1) through a pipeline after being connected with the evaporator through a liquid supply collecting pipe (31), the circulating water tank (6) is connected with the plate change heat exchange device (5) through a pipeline, the plate change heat exchange device (5) is connected with an inlet of the floor heating pipe (7) through a pipeline, and an outlet of the floor heating pipe (7) is connected to an inlet of the water tank (6) through the water inlet pipe (61).
2. The parallel refrigerating system for freezing and swelling prevention of cold storage terrace by using exhaust working medium heat according to claim 1, which is characterized in that: the plate heat exchange device (5) comprises a plate heat exchanger (55), a liquid viewing mirror (524), a gas-liquid separator (523), a temperature sensor (541) and an electromagnetic valve (511), wherein an inlet at the left upper part of the plate heat exchanger (55) is connected with a plate left inlet pipe (53), an outlet at the left lower part of the plate heat exchanger (55) is connected with a plate left inlet pipe (54) through a stop valve, an inlet at the right lower part of the plate heat exchanger (55) is connected with a plate right inlet pipe (51) through a stop valve, the electromagnetic valve (511) is arranged on the plate right inlet pipe (51), an outlet at the right upper part of the plate heat exchanger (55) is connected with the plate right inlet pipe (52), the liquid viewing mirror (524), the stop valve and the gas-liquid separator (523) are sequentially arranged on the plate right inlet pipe (52), and a gas outlet of the gas-liquid separator (523) is connected with the condenser inlet pipe (41) through a plate condenser branch pipe (522), and a liquid outlet of the gas-liquid separator (523) is connected with the horizontal type liquid accumulator (521) through a plate condenser branch pipe (521).
3. The parallel refrigerating system for freezing and swelling prevention of cold storage terrace by using exhaust working medium heat according to claim 1, which is characterized in that: the circulating water tank (6) is connected with an inlet at the upper left side of the plate heat exchanger (55) through a plate-exchanging left inlet pipe (53), the circulating water pump (62) is arranged on the plate-exchanging left inlet pipe (53) and is close to the circulating water tank (6), and the stop valve is arranged on the plate-exchanging left inlet pipe (53) and is close to the plate heat exchanger (55).
4. The parallel refrigerating system for freezing and swelling prevention of cold storage terrace by using exhaust working medium heat according to claim 1, which is characterized in that: the floor heating calandria (7) adopts an aluminum calandria or a plastic calandria, a plurality of floor heating calandria (7) are evenly paved in a refrigeration house floor, a plurality of floor temperature detection units are evenly installed in the refrigeration house floor, and a stop valve is installed at the inlet and the outlet of each floor heating calandria (7).
5. The parallel refrigerating system for freezing and swelling prevention of cold storage terrace by using exhaust working medium heat according to claim 1, which is characterized in that: the condenser inlet pipe (41) is provided with a pressure-drainage detection device (411) and a one-way valve (412), the pressure-drainage detection device (411) is close to the evaporative condenser (4), the pressure-drainage detection device (411) comprises a pressure detection unit, a drainage unit and an exhaust unit, the pressure detection unit, the drainage unit and the exhaust unit are arranged on the condenser inlet pipe (41) in a parallel connection mode, and the one-way valve (412) is arranged at the front end of the pressure-drainage detection device (411) along the medium flow direction in the condenser inlet pipe (41).
6. The parallel refrigerating system for freezing and swelling prevention of cold storage terrace by using exhaust working medium heat according to claim 1, which is characterized in that: the circulating water pump (62), the terrace temperature detection unit, the temperature sensor (541) and the electromagnetic valve (511) are all connected with a Programmable Logic Controller (PLC) of a control cabinet in the parallel refrigerating unit (1), the terrace temperature detection unit collects terrace temperature signals and transmits the terrace temperature signals to the PLC, the PLC transmits start or stop commands to the circulating water pump (62), the temperature sensor (541) collects medium temperature signals in the left pipe (54) and transmits the medium temperature signals to the PLC, and the PLC transmits the start or stop commands to the electromagnetic valve (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320984533.2U CN219735650U (en) | 2023-04-27 | 2023-04-27 | Cold storage terrace anti-freezing expansion parallel refrigerating system utilizing exhaust working medium heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320984533.2U CN219735650U (en) | 2023-04-27 | 2023-04-27 | Cold storage terrace anti-freezing expansion parallel refrigerating system utilizing exhaust working medium heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219735650U true CN219735650U (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320984533.2U Active CN219735650U (en) | 2023-04-27 | 2023-04-27 | Cold storage terrace anti-freezing expansion parallel refrigerating system utilizing exhaust working medium heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219735650U (en) |
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2023
- 2023-04-27 CN CN202320984533.2U patent/CN219735650U/en active Active
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