CN113932634A - Cryogenic fluid cold energy recycling system - Google Patents
Cryogenic fluid cold energy recycling system Download PDFInfo
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- CN113932634A CN113932634A CN202111303899.0A CN202111303899A CN113932634A CN 113932634 A CN113932634 A CN 113932634A CN 202111303899 A CN202111303899 A CN 202111303899A CN 113932634 A CN113932634 A CN 113932634A
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- 239000012530 fluid Substances 0.000 title claims abstract description 30
- 238000004064 recycling Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004378 air conditioning Methods 0.000 claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims description 131
- 238000004804 winding Methods 0.000 claims description 57
- 239000007788 liquid Substances 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000003949 liquefied natural gas Substances 0.000 claims description 11
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- 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
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Abstract
The invention discloses a cryogenic fluid cold energy recycling system which comprises a cold exchange device, a first cold storage tank, a second cold storage tank, an ice maker, an air conditioning unit and a water return tank, wherein the first cold storage tank is connected with the cold exchange device; the cold exchange device is connected with a first cold storage tank through a first pipeline, the first cold storage tank is connected with the ice maker through a second pipeline, the ice maker is connected with the water return tank through a third pipeline, and the water return tank is connected with the cold exchange device through a fourth pipeline; the cold exchange device is connected with a second cold storage tank through a fifth pipeline, the second cold storage tank is connected with an air conditioning unit through a sixth pipeline, and the air conditioning unit is connected with a water return tank through a seventh pipeline; the first cold storage tank and the second cold storage tank are both connected with the return water tank. The system has strong technical reliability and effectively saves energy.
Description
Technical Field
The invention relates to cold energy recycling equipment, in particular to a system for recycling cold energy of cryogenic fluids such as liquid natural gas, liquid nitrogen, liquid oxygen and the like.
Background
Cryogenic fluids such as liquid natural gas, liquid nitrogen, liquid oxygen, and the like, need to be gasified to gas when used at the end. In the pressure boosting gasification process, a large amount of heat needs to be absorbed, and a large amount of cold energy is released. The inventor carries out technical research and develops a cryogenic fluid cold energy recycling system, and a large amount of cold energy released in the process of boosting and gasifying cryogenic fluids such as liquid natural gas, liquid nitrogen, liquid oxygen and the like is recycled and used for ice making, refrigeration house refrigeration or air conditioner refrigeration, so that the cold energy is effectively utilized. The method conforms to the national guidance of energy conservation and emission reduction, and effectively reduces the carbon emission.
Disclosure of Invention
The invention aims to provide a cryogenic fluid cold energy recycling system which is high in technical reliability and can effectively save energy.
In order to achieve the purpose, the invention adopts the technical scheme that:
the cryogenic fluid cold energy recycling system comprises a cold exchange device, a first cold storage tank, a second cold storage tank, an ice maker, an air conditioning unit and a water return tank;
the cold exchange device is connected with a first cold storage tank through a first pipeline, the first cold storage tank is connected with the ice maker through a second pipeline, the ice maker is connected with the water return tank through a third pipeline, and the water return tank is connected with the cold exchange device through a fourth pipeline;
the cold exchange device is connected with a second cold storage tank through a fifth pipeline, the second cold storage tank is connected with an air conditioning unit through a sixth pipeline, and the air conditioning unit is connected with a water return tank through a seventh pipeline;
the first cold storage tank and the second cold storage tank are both connected with the return water tank.
Cryogenic fluid cold energy recycle system still includes the freezer, first cold-storage tank passes through eighth tube coupling freezer, the freezer passes through the ninth tube coupling return water tank.
Preferably, a first control valve is arranged on the first pipeline, a second control valve is arranged on the fifth pipeline, a first refrigerant pump is arranged on the second pipeline, a second refrigerant pump is arranged on the sixth pipeline, a third refrigerant pump is arranged on the eighth pipeline, a fourth refrigerant pump is arranged on the fourth pipeline, a first temperature detector is arranged on the first cold storage box, and a second temperature detector is arranged on the second cold storage box.
Preferably, the temperature value of the refrigerant in the first cold storage box is between a first set value and a second set value, when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage box is higher than the second set value, the controller starts the first control valve and the fourth refrigerant pump, the refrigerant led into the heat exchange device cools the refrigerant in the first cold storage box, and when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage box reaches the first set value, the controller closes the first control valve and the fourth refrigerant pump.
Preferably, the temperature value of the refrigerant in the second cold storage box is between a third set value and a fourth set value, when the second temperature detector detects that the temperature value of the refrigerant in the second cold storage box is higher than the fourth set value, the controller starts the second control valve and the fourth refrigerant pump, the refrigerant led into the heat exchange device cools the refrigerant in the second cold storage box, and when the second temperature detector detects that the temperature value of the refrigerant in the second cold storage box reaches the third set value, the controller closes the second control valve and the fourth refrigerant pump.
Preferably, the refrigerant in the first cold storage tank is delivered to the ice maker by a first refrigerant pump, the refrigerant in the first cold storage tank is delivered to the refrigeration house by a third refrigerant pump, and the refrigerant in the second cold storage tank is delivered to the air conditioning unit by a second refrigerant pump.
Preferably, when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage tank is higher than a second set value, the second temperature detector detects that the temperature value of the refrigerant in the second cold storage tank is higher than a fourth set value;
the controller firstly opens the first control valve and the fourth refrigerant pump, the refrigerant led into the heat exchange device cools the refrigerant in the first cold storage box, and when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage box reaches a first set value, the controller closes the first control valve and the fourth refrigerant pump;
and the controller starts the second control valve and the fourth refrigerant pump again, the refrigerant led into the heat exchange device cools the refrigerant in the second cold storage box, and when the second temperature detector detects that the temperature value of the refrigerant in the second cold storage box reaches a third set value, the controller closes the second control valve and the fourth refrigerant pump.
Preferably, the cold exchange device comprises a shell and an inner cylinder, the inner cylinder is arranged in the shell, a cold exchange cavity is formed between the shell and the inner cylinder, N winding pipes are arranged in the cold exchange cavity, and N is a natural number; the winding pipes are wound around the inner cylinder from top to bottom, and are respectively a first winding pipe, a second winding pipe, a third winding pipe … … and an Nth winding pipe from the inner cylinder to the outside, and the winding rotation directions of the adjacent winding pipes are opposite.
Preferably, the winding density of the first winding tube, the second winding tube, the third winding tube … … and the Nth winding tube gradually becomes lower; the liquid inlet ends of the N winding pipes are connected to the first busbar, and the liquid outlet ends of the N winding pipes are connected to the second busbar; the confluence port of the first busbar is a liquid inlet, and the liquid inlet is positioned above the shell; the confluence port of the second confluence bar is a liquid outlet, and the liquid outlet is positioned below the shell; the diameter of the liquid outlet is larger than that of the liquid inlet; the lower part of the shell is provided with a refrigerant inlet, and the upper part of the shell is provided with a refrigerant outlet; the lower part of the shell is arc-shaped, the lower part of the inner cylinder is arc-shaped, and the center of the lower end of the shell is provided with a refrigerant inlet; two temperature sensors are arranged in the cold exchange cavity at the upper part of the shell; the upper part of the shell is provided with a cleaning hole.
Preferably, the N winding pipes flow liquid natural gas, liquid nitrogen or liquid oxygen, and a refrigerant medium flows in the cooling exchange cavity.
The invention has the beneficial effects that:
cryogenic fluid cold energy recycle system utilizes and trades cold charge device to retrieve cryogenic fluid such as liquid natural gas, liquid nitrogen, liquid oxygen, the cold energy of releasing in the gasification process that steps up. The cold exchanging device is respectively communicated with the first cold storage box and the second cold storage box through pipelines, and the cold medium is stored in the first cold storage box and the second cold storage box. The first cold storage box is connected with the ice maker through a second pipeline, and ice is made by using cold energy carried by a refrigerant. The first cold storage box is connected with the refrigeration house through an eighth pipeline, the cold energy carried by the refrigerant is used for cooling the refrigeration house, the second cold storage box is connected with the air conditioning unit through a sixth pipeline, and the cold energy carried by the refrigerant is used for refrigerating a user. The cryogenic fluid cold energy recycling system efficiently and intelligently utilizes cold energy, is used for practical application of ice making, refrigeration houses, air conditioners and the like, accords with national energy conservation and emission reduction policies, and effectively reduces carbon emission.
Drawings
FIG. 1 is a schematic diagram of connection of components of a cryogenic fluid cold energy recycling system.
Fig. 2 is a cross-sectional view of the cooling device.
Fig. 3 is a cross-sectional view of the cooling device.
Fig. 4 is a top view of the heat exchanger without the housing top cover.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
the cryogenic fluid cold energy recycling system comprises a cold exchange device 1, a first cold storage tank 21, a second cold storage tank 22, an ice maker 31, a cold storage 32, an air conditioning unit 33 and a water return tank 23. The cold exchanging device 1 is connected with a first cold storage tank 21 through a first pipeline 41, the first cold storage tank 21 is connected with an ice maker 31 through a second pipeline 42, the ice maker 31 is connected with a water return tank 23 through a third pipeline 43, and the water return tank 23 is connected with the cold exchanging device 1 through a fourth pipeline 44. The first cold storage tank 21 is connected with the cold storage 32 through an eighth pipeline 48, and the cold storage 32 is connected with the return tank 23 through a ninth pipeline 49.
The cold exchanging device 1 is connected with a second cold storage tank 22 through a fifth pipeline 45, the second cold storage tank 22 is connected with an air conditioning unit 33 through a sixth pipeline 46, and the air conditioning unit 33 is connected with a water return tank 23 through a seventh pipeline 47; the first cold storage tank 21 and the second cold storage tank 22 are both connected with a return tank 23.
The first pipeline 41 is provided with a first control valve 51, the fifth pipeline 45 is provided with a second control valve 52, the second pipeline 42 is provided with a first refrigerant pump 61, the sixth pipeline 46 is provided with a second refrigerant pump 62, the eighth pipeline 48 is provided with a third refrigerant pump 63, the fourth pipeline 44 is provided with a fourth refrigerant pump 64, the first cold storage box 21 is provided with a first temperature detector 71, and the second cold storage box 22 is provided with a second temperature detector 72.
The temperature value of the refrigerant in the first cold storage box 21 is between a first set value and a second set value (for example, between-19 ℃ and-15 ℃), when the first temperature detector 71 detects that the temperature value of the refrigerant in the first cold storage box 21 is higher than the second set value (-15 ℃), the controller starts the first control valve 51 and the fourth refrigerant pump 64, the refrigerant led into the heat exchanger 1 cools the refrigerant in the first cold storage box 21, and when the first temperature detector 71 detects that the temperature value of the refrigerant in the first cold storage box 21 reaches the first set value (-19 ℃), the controller closes the first control valve 51 and the fourth refrigerant pump 64.
The temperature value of the refrigerant in the second cold storage box 22 is between a third set value and a fourth set value (for example, between 5 ℃ and 12 ℃), when the second temperature detector 72 detects that the temperature value of the refrigerant in the second cold storage box 22 is higher than the fourth set value (12 ℃), the controller starts the second control valve 52 and the fourth refrigerant pump 64, the refrigerant led into the heat exchanger 1 cools the refrigerant in the second cold storage box 22, and when the second temperature detector 72 detects that the temperature value of the refrigerant in the second cold storage box 22 reaches the third set value (5 ℃), the controller closes the second control valve 52 and the fourth refrigerant pump 64.
The refrigerant in the first cold storage tank 21 is delivered to the ice maker 31 by the first refrigerant pump 61, the refrigerant in the first cold storage tank 21 is delivered to the refrigerator 32 by the third refrigerant pump 63, and the refrigerant in the second cold storage tank 22 is delivered to the air conditioning unit 33 by the second refrigerant pump 62.
When the first temperature detector 71 detects that the temperature value of the refrigerant in the first cold storage tank 21 is higher than a second set value (-15 ℃), and the second temperature detector 72 detects that the temperature value of the refrigerant in the second cold storage tank 22 is higher than a fourth set value (12 ℃). The two cold storage boxes need to supplement cold energy, and the controller preferentially supplements the cold energy to the first cold storage box 21 and then supplements the cold energy to the second cold storage box 22. The method comprises the following specific steps: the controller firstly opens the first control valve 51 and the fourth refrigerant pump 64, the refrigerant led into the heat exchange device 1 cools the refrigerant in the first cold storage box 21, and when the first temperature detector 71 detects that the temperature value of the refrigerant in the first cold storage box 21 reaches a first set value (-19 ℃), the controller closes the first control valve 51 and the fourth refrigerant pump 64. The controller then starts the second control valve 52 and the fourth refrigerant pump 64, the refrigerant introduced into the heat exchanger 1 cools the refrigerant in the second cool storage box 22, and when the second temperature detector 72 detects that the temperature of the refrigerant in the second cool storage box 22 reaches a third set value (5 ℃), the controller closes the second control valve 52 and the fourth refrigerant pump 64.
The cold exchanging device 1 comprises a shell 11 and an inner cylinder 12, wherein the inner cylinder 12 is arranged inside the shell 11, a cold exchanging cavity 13 is formed between the shell 11 and the inner cylinder 12, and four winding pipes are arranged in the cold exchanging cavity 13. The winding pipes are wound around the inner cylinder from top to bottom, and are respectively a first winding pipe 141, a second winding pipe 142, a third winding pipe 143 and a fourth winding pipe 144 from the inner cylinder 12 to the outside, and the winding rotation directions of the adjacent winding pipes are opposite. For example: the first winding tube 141 and the third winding tube 143 are wound from top to bottom in a clockwise direction, and the second winding tube 142 and the fourth winding tube 144 are wound from top to bottom in a counterclockwise direction.
The four winding tubes are connected to the first bus 151 at the inlet end and to the second bus 152 at the outlet end. The first winding tube 141, the second winding tube 142, the third winding tube 143 and the fourth winding tube 144 have gradually reduced winding density, the four winding tubes between the first bus bar 151 and the second bus bar 152 have equivalent lengths, and four fluid passages are provided for the fluid, so that the resistance of the winding tubes is equivalent, and the generation of fluid shortcuts is reduced. All the winding pipes are made of stainless steel pipes, and the outside of the pipe is finely polished, so that the generation of dirt outside the pipe is greatly reduced.
The confluence port of the first busbar 151 is a liquid inlet 161, and the liquid inlet 161 is located above the housing 11; the confluence port of the second confluence line 152 is a liquid outlet 162, and the liquid outlet 162 is located below the housing 11. The diameter of the liquid outlet 162 is larger than that of the liquid inlet 161, and the temperature of the cryogenic fluid such as natural gas, liquid nitrogen or liquid oxygen rises in the heat exchange device, so that the volume expands and the pressure rises, and the flow rate is ensured to be in a reasonable range.
The lower portion of the housing 11 is formed in an arc shape, the lower portion of the inner cylinder 12 is formed in an arc shape, a refrigerant inlet 171 is formed in the center of the lower end of the housing 11, and a refrigerant outlet 172 is formed in the upper portion of the housing 11.
An inner cylinder 12 is designed at the middle position inside the cold exchanging device, the top end of the inner cylinder 12 is welded on the inner side of a top cover of the shell 11, and the bottom end of the inner cylinder adopts an arc-shaped end socket, so that the refrigerant entering from the bottom can be uniformly distributed to peripheral winding pipeline areas, and shortcuts are avoided.
Two temperature sensors 18 are arranged in the cooling exchange cavity at the upper part of the shell 11. The temperature sensor 18 monitors the temperature in the shell in real time, and when the temperature is lower than a set value, the external valve mechanism is immediately linked to stop cryogenic fluids such as liquid natural gas, liquid nitrogen or liquid oxygen and the like from entering, so that the safety of the cold exchange device is ensured. The set temperature values of the two temperature sensors 18 have small difference, and the monitoring failure caused by the damage of one temperature sensor is avoided by adopting a double-protection principle.
The upper portion of the shell 11 is provided with a cleaning hole 19, so that the internal condition of the shell 11 can be observed conveniently, and when dirt is generated around the pipe, the cleaning hole can be cleaned by methods such as ultrasonic waves, a high-pressure water gun and chemical cleaning liquid.
The casing outside has heat insulation layer and inoxidizing coating parcel, avoids cold volume loss.
The following description of the cold exchange with liquid natural gas:
the high-pressure liquid natural gas is connected to the liquid inlet 161, and after being uniformly divided by the first bus bar 151, the liquid natural gas flows in the first winding pipe 141, the second winding pipe 142, the third winding pipe 143, and the fourth winding pipe 144, and flows out through the liquid outlet 162 of the second bus bar 152. The refrigerant flows into the heat exchange cavity 13 through the refrigerant inlet 171, the liquid natural gas absorbs heat and expands in volume, and the refrigerant absorbs cold and flows out from the refrigerant outlet 172 to carry out cold energy. The cooling exchanger 1 is communicated with the first cold storage tank 21 and the second cold storage tank 22 through pipelines, and stores the refrigerant in the first cold storage tank 21 and the second cold storage tank 22. The first cold storage box 21 is connected to an ice maker through a second pipeline, and ice is made using cold energy carried by a refrigerant. The first cold storage box 21 is connected with the refrigeration house 32 through an eighth pipeline 48, the refrigeration house 32 is cooled by using cold energy carried by a refrigerant, the second cold storage box 22 is connected with the air conditioning unit 33 through a sixth pipeline 46, and the user refrigerates by using the cold energy carried by the refrigerant.
The refrigerant is in liquid state in the technical implementation process of the invention, and glycol solution or similar solution can be selected.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The cryogenic fluid cold energy recycling system is characterized by comprising a cold exchange device, a first cold storage tank, a second cold storage tank, an ice maker, an air conditioning unit and a water return tank;
the cold exchange device is connected with a first cold storage tank through a first pipeline, the first cold storage tank is connected with the ice maker through a second pipeline, the ice maker is connected with the water return tank through a third pipeline, and the water return tank is connected with the cold exchange device through a fourth pipeline;
the cold exchange device is connected with a second cold storage tank through a fifth pipeline, the second cold storage tank is connected with an air conditioning unit through a sixth pipeline, and the air conditioning unit is connected with a water return tank through a seventh pipeline;
the first cold storage tank and the second cold storage tank are both connected with the return water tank.
2. The cryogenic fluid cold energy recycling system according to claim 1, further comprising a cold storage, wherein the first cold storage tank is connected with the cold storage through an eighth pipeline, and the cold storage is connected with the return water tank through a ninth pipeline.
3. The cryogenic fluid cold energy recycling system according to claim 2, wherein a first control valve is disposed on the first pipeline, a second control valve is disposed on the fifth pipeline, a first refrigerant pump is disposed on the second pipeline, a second refrigerant pump is disposed on the sixth pipeline, a third refrigerant pump is disposed on the eighth pipeline, a fourth refrigerant pump is disposed on the fourth pipeline, a first temperature detector is disposed on the first cold storage tank, and a second temperature detector is disposed on the second cold storage tank.
4. The cryogenic fluid cold energy recycling system according to claim 3, wherein the temperature of the refrigerant in the first cold storage tank is between a first set value and a second set value, when the first temperature detector detects that the temperature of the refrigerant in the first cold storage tank is higher than the second set value, the controller turns on the first control valve and the fourth refrigerant pump, the refrigerant introduced into the heat exchanger cools the refrigerant in the first cold storage tank, and when the first temperature detector detects that the temperature of the refrigerant in the first cold storage tank reaches the first set value, the controller turns off the first control valve and the fourth refrigerant pump.
5. The cryogenic fluid cold energy recycling system according to claim 4, wherein the temperature of the refrigerant in the second cold storage tank is between a third setting value and a fourth setting value, when the second temperature detector detects that the temperature of the refrigerant in the second cold storage tank is higher than the fourth setting value, the second control valve and the fourth refrigerant pump are turned on by the controller, the refrigerant introduced into the heat exchanger cools the refrigerant in the second cold storage tank, and when the second temperature detector detects that the temperature of the refrigerant in the second cold storage tank reaches the third setting value, the second control valve and the fourth refrigerant pump are turned off by the controller.
6. The cryogenic fluid cold energy recycling system according to claim 5, wherein the refrigerant in the first cold storage tank is delivered to the ice maker by a first refrigerant pump, the refrigerant in the first cold storage tank is delivered to the refrigerator by a third refrigerant pump, and the refrigerant in the second cold storage tank is delivered to the air conditioning unit by a second refrigerant pump.
7. The cryogenic fluid cold energy recycling system according to claim 5, wherein when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage tank is higher than a second set value, the second temperature detector detects that the temperature value of the refrigerant in the second cold storage tank is higher than a fourth set value;
the controller firstly opens the first control valve and the fourth refrigerant pump, the refrigerant led into the heat exchange device cools the refrigerant in the first cold storage box, and when the first temperature detector detects that the temperature value of the refrigerant in the first cold storage box reaches a first set value, the controller closes the first control valve and the fourth refrigerant pump;
and the controller starts the second control valve and the fourth refrigerant pump again, the refrigerant led into the heat exchange device cools the refrigerant in the second cold storage box, and when the second temperature detector detects that the temperature value of the refrigerant in the second cold storage box reaches a third set value, the controller closes the second control valve and the fourth refrigerant pump.
8. The cryogenic fluid cold energy recycling system according to any one of claims 1 to 7, wherein the cold exchanging device comprises a housing and an inner cylinder, the inner cylinder is arranged inside the housing, a cold exchanging cavity is formed between the housing and the inner cylinder, N winding pipes are arranged in the cold exchanging cavity, and N is a natural number; the winding pipes are wound around the inner cylinder from top to bottom, and are respectively a first winding pipe, a second winding pipe, a third winding pipe … … and an Nth winding pipe from the inner cylinder to the outside, and the winding rotation directions of the adjacent winding pipes are opposite.
9. The cryogenic fluid cold energy recycling system according to claim 8, wherein the winding density of the first winding pipe, the second winding pipe, the third winding pipe … … and the Nth winding pipe gradually decreases; the liquid inlet ends of the N winding pipes are connected to the first busbar, and the liquid outlet ends of the N winding pipes are connected to the second busbar; the confluence port of the first busbar is a liquid inlet, and the liquid inlet is positioned above the shell; the confluence port of the second confluence bar is a liquid outlet, and the liquid outlet is positioned below the shell; the diameter of the liquid outlet is larger than that of the liquid inlet; the lower part of the shell is provided with a refrigerant inlet, and the upper part of the shell is provided with a refrigerant outlet; the lower part of the shell is arc-shaped, the lower part of the inner cylinder is arc-shaped, and the center of the lower end of the shell is provided with a refrigerant inlet; two temperature sensors are arranged in the cold exchange cavity at the upper part of the shell; the upper part of the shell is provided with a cleaning hole.
10. The cryogenic fluid cold energy recycling system according to claim 9, wherein liquid natural gas, liquid nitrogen or liquid oxygen flows in the N bypass pipes, and a refrigerant medium flows in the cooling chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111303899.0A CN113932634A (en) | 2021-11-05 | 2021-11-05 | Cryogenic fluid cold energy recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111303899.0A CN113932634A (en) | 2021-11-05 | 2021-11-05 | Cryogenic fluid cold energy recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113932634A true CN113932634A (en) | 2022-01-14 |
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| CN108518904A (en) * | 2018-06-13 | 2018-09-11 | 南京工业大学 | It is a kind of to produce solid ice using LNG vaporization release cold energy and the device and its cold energy providing method of marine air-conditioning system low-temperature receiver are provided |
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| CN209027332U (en) * | 2018-09-28 | 2019-06-25 | 郑州朗润智能装备股份有限公司 | A kind of recycling of LNG cold energy is with around pipe type heat transfer system |
| CN110318833A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of cruise LNG air supply system cold energy gradient utilization system and energy management method |
| CN214095024U (en) * | 2020-12-29 | 2021-08-31 | 浙江大学常州工业技术研究院 | High-efficient heat exchanger for LNG idle call |
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| JP2866939B1 (en) * | 1998-02-03 | 1999-03-08 | 工業技術院長 | Liquefied natural gas vaporizer and refrigeration system using the same |
| CN201093819Y (en) * | 2007-08-06 | 2008-07-30 | 德化县农业局 | LNG cold energy step level, integrated utilization system |
| CN101650101A (en) * | 2009-09-15 | 2010-02-17 | 无锡市同力空调设备厂 | Heat exchanger with spiral heat exchange tube body |
| CN203501591U (en) * | 2013-08-27 | 2014-03-26 | 中海石油气电集团有限责任公司 | Comprehensive cold energy utilization equipment for liquefied natural gas (LNG) fishing boat |
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| CN108518904A (en) * | 2018-06-13 | 2018-09-11 | 南京工业大学 | It is a kind of to produce solid ice using LNG vaporization release cold energy and the device and its cold energy providing method of marine air-conditioning system low-temperature receiver are provided |
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| CN110318833A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of cruise LNG air supply system cold energy gradient utilization system and energy management method |
| CN214095024U (en) * | 2020-12-29 | 2021-08-31 | 浙江大学常州工业技术研究院 | High-efficient heat exchanger for LNG idle call |
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