CN110381698B - Serial-type liquid-gas double-channel data center refrigerating system - Google Patents
Serial-type liquid-gas double-channel data center refrigerating system Download PDFInfo
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- CN110381698B CN110381698B CN201910511951.8A CN201910511951A CN110381698B CN 110381698 B CN110381698 B CN 110381698B CN 201910511951 A CN201910511951 A CN 201910511951A CN 110381698 B CN110381698 B CN 110381698B
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- 238000001816 cooling Methods 0.000 claims abstract description 149
- 239000007788 liquid Substances 0.000 claims abstract description 90
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 34
- 239000011737 fluorine Substances 0.000 claims abstract description 34
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 230000017525 heat dissipation Effects 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 239000003507 refrigerant Substances 0.000 claims description 17
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000000875 corresponding Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20763—Liquid cooling without phase change
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
Abstract
The invention provides a serial-type liquid-gas dual-channel data center refrigerating system, which belongs to the technical field of data center refrigeration and comprises a cooling tower, a secondary side of a first heat exchanger and a secondary side of a second heat exchanger which are circularly communicated to form a natural radiating system; the primary side of the first heat exchanger, the liquid storage tank, the fluorine pump, the air conditioner tail end, the electromagnetic valve and the compressor are communicated in a circulating mode to form an air cooling system; the gas cooling system is also internally provided with a first one-way valve connected with the fluorine pump in parallel and a second one-way valve connected with the electromagnetic valve and the compressor series pipeline in parallel; the primary side of the second heat exchanger is communicated with the liquid cooling server cabinet in a circulating mode to form a liquid cooling system; the air cooling system and the liquid cooling system exchange heat with the natural heat dissipation system through the first heat exchanger and the second heat exchanger respectively. The serial-type liquid-gas dual-channel data center refrigerating system provided by the invention has the advantages of small occupied space and low energy consumption.
Description
Technical Field
The invention belongs to the technical field of data center refrigeration, and particularly relates to a serial type liquid-gas dual-channel data center refrigeration system.
Background
With the rapid development of big data and cloud computing, data centers are developing in the direction of increasing size, high density, high reliability and green energy conservation. The liquid-air double-channel cooling technology is used as a branch of the liquid cooling technology, and has the advantages of supporting a high-power server, being capable of cooling by using natural air, being low in energy consumption and the like, so that the liquid-air double-channel cooling technology is widely applied to a refrigerating system of a data center. The liquid-air dual channel technology generally employs two independent systems, a liquid cooling system and an air cooling system. The heating value of electronic components such as a server CPU and the like accounts for 70-80% of the heating value of the whole data center, and the heat is taken away by the liquid cooling system; the remaining 20% -30% of the heat in the data center is removed by the air cooling system at the air conditioning end.
The liquid cooling system and the air cooling system are respectively and independently arranged, so that the occupied area is large, more required equipment and pipelines are needed, the cost is high, and the integrated development is not facilitated. And since 20% of the heat in the data center is usually carried away by mechanical refrigeration of the compressor, part of the electric energy resource is consumed. According to the requirements of T/CIE 051-.
At present, a liquid-gas double-channel refrigerating system for a data center is in urgent need of improvement.
Disclosure of Invention
The invention aims to provide a serial type liquid-gas double-channel data center refrigerating system, and aims to solve the technical problems that the existing data center refrigerating system is large in occupied area, needs more equipment and pipelines and is high in energy consumption.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a serial-type liquid-gas dual-channel data center refrigerating system, comprising: the system comprises a cooling tower, a first heat exchanger, a liquid storage tank, a fluorine pump, an expansion valve, an air conditioner tail end, an electromagnetic valve, a compressor, a second heat exchanger and a liquid cooling server cabinet;
the cooling tower, the secondary side of the first heat exchanger and the secondary side of the second heat exchanger are communicated in a circulating mode to form a natural cooling system;
the primary side of the first heat exchanger, the liquid storage tank, the fluorine pump, the air conditioner tail end, the electromagnetic valve and the compressor are communicated in a circulating mode to form an air cooling system; the gas cooling system is also internally provided with a first one-way valve connected with the fluorine pump in parallel and a second one-way valve connected with the electromagnetic valve and the compressor series pipeline in parallel;
the primary side of the second heat exchanger is communicated with the liquid cooling server cabinet in a circulating mode to form a liquid cooling system;
the air cooling system and the liquid cooling system exchange heat with the natural heat dissipation system through the first heat exchanger and the second heat exchanger respectively.
Further, a third one-way valve is also connected in series between the compressor and the primary side of the first heat exchanger, the electromagnetic valve, the compressor and the third one-way valve are connected in series to form a compressor refrigeration pipeline, and the compressor refrigeration pipeline is connected in parallel with the second one-way valve.
Further, a first circulating pump is further arranged between an outlet of the primary side of the second heat exchanger and an inlet of the liquid cooling server cabinet.
Furthermore, a first bypass which is communicated with an outlet and an inlet of a primary side of the second heat exchanger and a first three-way valve which is used for adjusting the supply amount of the outlet water of the liquid cooling server cabinet to the inlet of the first bypass and/or the inlet of the primary side of the second heat exchanger are arranged in the liquid cooling system;
the outlet water of the liquid cooling server cabinet can flow to the inlet of the second heat exchanger through the inlet and the first outlet of the first three-way valve, and can also flow together and flow back to the inlet of the liquid cooling server cabinet through the inlet of the first three-way valve, the second outlet of the first three-way valve, and the outlet water of the first bypass and the second heat exchanger.
Furthermore, a first temperature detection device for detecting the water temperature at the secondary side inlet of the first heat exchanger, a second temperature detection device for detecting the water temperature at the secondary side outlet of the first heat exchanger, a third temperature detection device for detecting the water temperature at the secondary side inlet of the second heat exchanger and a fourth temperature detection device for detecting the water temperature at the secondary side outlet of the second heat exchanger are further arranged in the natural cooling system.
Furthermore, a second bypass communicated with the outlet and the inlet of the cooling tower, a third bypass communicated with the inlet of the secondary side of the first heat exchanger and the inlet of the secondary side of the second heat exchanger, a second three-way valve used for adjusting the supply amount of the secondary side effluent of the first heat exchanger to the inlet of the cooling tower and/or the inlet of the second bypass, and a third three-way valve used for adjusting the supply amount of the confluence liquid of the secondary side effluent of the cooling tower and the second bypass to the inlet of the primary side of the first heat exchanger and/or the inlet of the third bypass are also arranged in the natural heat dissipation system.
Further, the first temperature detection device, the second temperature detection device, the third temperature detection device, the fourth temperature detection device, the second three-way valve and the third three-way valve are respectively connected with a control device;
the control device can adjust the opening degree of the second three-way valve and/or the third three-way valve by the temperatures of the first heat exchanger and the second heat exchanger.
Further, a second circulation pump is arranged between the outlet of the cooling tower and the second bypass outlet.
Furthermore, a fourth bypass which is communicated with an inlet and an outlet of the secondary side of the second heat exchanger and a fourth three-way valve which is used for adjusting the supply amount of the mixed liquid of the secondary side effluent of the first heat exchanger and the third bypass effluent to the inlet of the secondary side of the second heat exchanger and/or the outlet of the secondary side of the second heat exchanger are arranged in the natural heat dissipation system.
The serial-type liquid-gas double-channel data center refrigerating system provided by the invention has the beneficial effects that: compared with the prior art, the serial-type liquid-gas dual-channel data center refrigerating system has the advantages that the liquid cooling system and the gas cooling system are connected in series and share the cooling tower, so that equipment and pipeline investment is greatly reduced, purchase and production cost is reduced, space is saved, unified management and regulation control are facilitated, refrigerating efficiency is improved, and the serial-type liquid-gas dual-channel data center refrigerating system is suitable for a large-scale data center, is suitable for refrigerating a container data center with a small size, and has the characteristic of modularization. And because the inlet water temperature of the secondary side of the second heat exchanger in the liquid cooling system can reach 40 ℃, the liquid cooling system and the air cooling system are connected in series, and the higher-temperature water exchanged by the air cooling system through the first heat exchanger enters the second heat exchanger to be used for heat exchange of the liquid cooling system, the inlet and outlet water temperature of the liquid cooling system is effectively improved, and the aim of saving energy is fulfilled.
In addition, 5% -10% of heat of the data center can be taken away by using the compressor for refrigeration approximately all the year round, and the refrigeration system consumes more electric energy at the moment. The fluorine pump system can fully utilize natural air cooling of the cooling tower to dissipate heat all the year round, and can take away about 10% -15% of heat of the data center. In summary, an integrated system combining a liquid-air dual channel and a fluorine pump can take away 90% -95% of heat of a data center (wherein the liquid cooling system accounts for 80%, and the fluorine pump system accounts for 10% -15%), and only 5% -10% of heat of the data center is mechanically refrigerated by a compressor, so that the energy conservation and consumption reduction of the data center are remarkable. And because the serial-type liquid-gas dual-system data center refrigerating system with the fluorine pump provided by the invention is adopted, the compressor is required to be started only when the temperature is higher in summer, the service life of the compressor is effectively reduced, and natural cooling in most of the whole year is realized, so that the heat dissipation problem of a large-scale high-heat-power-density data center is solved, and the electric energy consumption is further reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a serial liquid-air dual channel data center refrigeration system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a control structure outline according to an embodiment of the present invention.
In the figure: 1. a cooling tower; 2. a first heat exchanger; 3. a liquid storage tank; 4. a fluorine pump; 5. an expansion valve; 6. an air conditioner terminal; 7. an electromagnetic valve; 8. a compressor; 9. a second heat exchanger; 10. a control device; 11. a liquid-cooled server cabinet; 12. a first check valve; 13. a second one-way valve; 14. a third check valve; 15. a first circulation pump; 16. a first bypass; 17. a first three-way valve; 18. a first temperature detection device; 19. a second temperature detection device; 20. a third temperature detection device; 21. a fourth temperature detection device; 22. a second circulation pump; 23. a second bypass; 24. a third bypass; 25. a second three-way valve; 26. a third three-way valve; 27. a fourth bypass; 28. and a fourth three-way valve.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a serial liquid-air dual channel data center cooling system according to an embodiment of the present invention will be described. The serial-type liquid-gas dual-channel data center refrigerating system comprises a cooling tower 1, a first heat exchanger 2, a liquid storage tank 3, a fluorine pump 4, an expansion valve 5, an air conditioner tail end 6, an electromagnetic valve 7, a compressor 8, a second heat exchanger 9 and a liquid cooling server cabinet 11. The cooling tower 1, the secondary side of the first heat exchanger 2 and the secondary side of the second heat exchanger 9 are communicated in a circulating mode to form a natural heat dissipation system. The primary side of the first heat exchanger 2, the liquid storage tank 3, the fluorine pump 4, the air conditioning terminal 6, the solenoid valve 7 and the compressor 8 are in circulating communication to form an air cooling system. The air cooling system is also provided with a first one-way valve 12 connected with the fluorine pump 4 in parallel and a second one-way valve 13 connected with the series pipeline of the electromagnetic valve 7 and the compressor 8 in parallel. The primary side of the second heat exchanger 9 and the liquid cooling server cabinet 11 are in circulating communication to form a liquid cooling system. The air cooling system and the liquid cooling system exchange heat with the natural heat dissipation system through the first heat exchanger 2 and the second heat exchanger 9 respectively.
During refrigeration, 80% of heat in the data center server is transferred to the primary side of the second heat exchanger 9 through the liquid cooling server cabinet 11 and the corresponding liquid cooling pipeline, heat exchange is carried out between the primary side and the secondary side, the heat is transferred to the natural heat dissipation system, and finally the heat is dissipated to the atmosphere through the cooling tower 1. 20% of heat in the data center server is transferred to the primary side of the first heat exchanger 2 through the air conditioner terminal 6 and a corresponding air cooling pipeline, the heat is exchanged between the primary side and the secondary side, the heat is transferred to a natural heat dissipation system, and finally the heat is dissipated to the atmosphere through the cooling tower 1.
Wherein, the liquid cooling system is opened and refrigerated all the year round, can take away 80% data center heat. The air cooling system selects a corresponding refrigeration mode according to different regions and different seasons, and the operation is as follows:
when the temperature is higher (such as summer), the fluorine pump 4 is disconnected, the compressor 8 and the electromagnetic valve 7 are started, and the refrigerant flowing out of the primary side outlet of the first heat exchanger 2 sequentially passes through the liquid storage tank 3, the first one-way valve 12, the air conditioner tail end 6, the electromagnetic valve 7 and the compressor 8 and flows back to the primary side inlet of the first heat exchanger 2. Wherein the liquid storage tank 3 is used for providing enough liquid refrigerant for the fluorine pump 4.
When the temperature is cold (such as spring, autumn or winter), the fluorine pump 4 is turned on, the compressor 8 is turned off, and the electromagnetic valve 7 is closed. The refrigerant from the primary side outlet of the first heat exchanger 2 flows through the liquid storage tank 3, the fluorine pump 4, the air conditioner tail end 6 and the second one-way valve 13 in sequence and flows back to the primary side inlet of the first heat exchanger 2.
And in the transition season, when the temperature is between the critical value of the fully-opened fluorine pump 4 and the running critical temperature of the fully-opened compressor 8, the fluorine pump 4 is started, the compressor 8 is started, and the electromagnetic valve 7 is opened. The refrigerant from the outlet of the primary side of the first heat exchanger 2 flows through the liquid storage tank 3, the fluorine pump 4, the expansion valve 5, the air conditioner tail end 6, the electromagnetic valve 7 and the compressor 8 in sequence and flows back to the inlet of the primary side of the first heat exchanger 2.
Compared with the prior art, the serial liquid-gas dual-system data center refrigerating system with the fluorine pump provided by the embodiment of the invention has the advantages that the liquid cooling system and the gas cooling system are connected in series and share the cooling tower 1, so that the equipment and pipeline investment is greatly reduced, the purchase and production cost is reduced, the space is saved, the unified management and regulation control are convenient, the refrigerating efficiency is improved, the serial liquid-gas dual-system data center refrigerating system with the fluorine pump is suitable for a large-scale data center, is suitable for refrigerating a container data center with a small size, and has the characteristic of modularization. And because the temperature of the inlet water on the secondary side of the second heat exchanger 9 in the liquid cooling system can reach 40 ℃, the liquid cooling system and the air cooling system are connected in series, and the higher-temperature water exchanged by the air cooling system through the first heat exchanger 2 enters the second heat exchanger 9 to be used for heat exchange of the liquid cooling system, the temperature of the inlet water and the outlet water of the liquid cooling system is effectively increased, and the purpose of energy conservation is further achieved.
In addition, 5% -10% of heat of the data center can be taken away by using the compressor for refrigeration approximately all the year round, and the refrigeration system consumes more electric energy at the moment. The natural air cooling of the cooling tower 1 can be fully utilized by the fluorine pump system to dissipate heat all the year round, and about 10% -15% of heat of the data center can be taken away. In summary, an integrated system combining a liquid-air dual channel and a fluorine pump can take away 90% -95% of heat of a data center (wherein the liquid cooling system accounts for 80%, and the fluorine pump system accounts for 10% -15%), and only 5% -10% of heat of the data center is mechanically refrigerated by a compressor, so that the energy conservation and consumption reduction of the data center are remarkable. And because the serial-type liquid-gas dual-system data center refrigerating system with the fluorine pump provided by the invention is adopted, the compressor 8 is required to be started only when the temperature is higher in summer, the service life of the compressor 8 is effectively reduced, and natural cooling in most of the whole year is realized, so that the heat dissipation problem of a large-scale high-heat-power-density data center is solved, and the electric energy consumption is further reduced.
Specifically, water flows in pipelines between the cooling tower 1 and the secondary sides of the first heat exchanger 2 and the second heat exchanger 9; the first heat exchanger 2 carries refrigerant on the primary side; the second heat exchanger 9 is fed with refrigerant, deionized water, ethylene glycol, etc. on the primary side.
As a specific embodiment of the serial two-channel liquid-gas data center refrigeration system provided by the present invention, please refer to fig. 1, a third check valve 14 is further connected in series between the compressor 8 and the primary side of the first heat exchanger 2, the electromagnetic valve 7, the compressor 8 and the third check valve 14 are connected in series to form a compressor refrigeration pipeline, and the compressor refrigeration pipeline is connected in parallel with the second check valve 13.
An outlet of a primary side of the first heat exchanger 2 is communicated with an inlet of a liquid storage tank 3, an outlet of the liquid storage tank 3 is communicated with an inlet of a fluorine pump 4, an outlet of the fluorine pump 4 is communicated with an inlet of an expansion valve 5, and an outlet of the expansion valve 5 is communicated with an inlet of an air conditioner tail end 6. The air-conditioning terminal 6 mainly comprises an evaporator and a variable frequency fan, and the air-conditioning terminal 6 can be a room-level air conditioner, a train air conditioner or other air conditioners. The outlet of the air conditioner terminal 6 is communicated with the inlet of the electromagnetic valve 7, the outlet of the electromagnetic valve 7 is communicated with the inlet of the compressor 8, the outlet of the compressor 8 is communicated with the inlet of the third check valve 14, and the outlet of the third check valve 14 is communicated with the primary side inlet of the first heat exchanger 2. Wherein, the first one-way valve 12 bypasses the fluorine pump 4, the inlet of the first one-way valve 12 is positioned between the liquid storage tank 3 and the fluorine pump 4, and the outlet of the first one-way valve 12 is positioned between the fluorine pump 4 and the expansion valve 5. The second check valve 13 can bypass a pipeline formed by connecting the third check valve 14, the compressor 8 and the electromagnetic valve 7 in series, the inlet of the second check valve 13 is positioned between the electromagnetic valve 7 and the outlet of the air conditioning end 6, and the outlet of the second check valve 13 is positioned between the third check valve 14 and the inlet of the primary side of the first heat exchanger 2.
The third check valve 14 effectively prevents the refrigerant flowing out of the second check valve 13 from flowing back into the compressor 8, and reduces the risk of damage to the compressor 8.
Referring to fig. 1, as a specific embodiment of the serial liquid-air dual-channel data center refrigeration system provided by the present invention, a first circulation pump 15 is further disposed between an outlet of a primary side of the second heat exchanger 9 and an inlet of the liquid-cooled server cabinet 11.
The outlet of the primary side of the second heat exchanger 9 is communicated with the inlet of the first circulating water pump, the outlet of the first circulating water pump is communicated with the inlet of the liquid cooling server cabinet 11, and the outlet of the liquid cooling server cabinet 11 is connected with the inlet of the primary side of the second heat exchanger 9.
The arrangement of the first circulating pump 15 ensures that the refrigerant in the liquid cooling system circulates smoothly, and the refrigeration effect is ensured.
Referring to fig. 1, a first bypass 16 for communicating the primary outlet and the primary inlet of the second heat exchanger 9 and a first three-way valve 17 for adjusting the supply amount of the outlet water of the liquid cooling server cabinet 11 to the inlet of the first bypass 16 and/or the primary inlet of the second heat exchanger 9 are disposed in the liquid cooling system.
The outlet water of the liquid cooling server cabinet 11 can flow to the inlet of the second heat exchanger 9 through the inlet and the first outlet of the first three-way valve 17, and can also flow together with the outlet water of the second heat exchanger 9 through the inlet, the second outlet and the first bypass 16 of the first three-way valve 17 and flow back to the inlet of the liquid cooling server cabinet 11.
An inlet of the first three-way valve 17 is communicated with an outlet of the liquid cooling server cabinet 11 through a pipeline, a first outlet is communicated with an inlet of a primary side of the second heat exchanger 9 through a pipeline, a second outlet is communicated with an inlet of the first bypass 16, and an outlet of the first bypass 16 is communicated with a pipeline communicated with an outlet of the primary side of the second heat exchanger 9 and an inlet of the liquid cooling server cabinet 11. When the temperature of the liquid cooling server cabinet 11 is not high, the first outlet and the second outlet can be simultaneously conducted, a part of liquid flowing out from the outlet of the liquid cooling server cabinet 11 flows into the second heat exchanger 9 through the first outlet for heat exchange, and the other part of liquid flows back to the liquid cooling server cabinet 11 after being converged with the liquid flowing out from the outlet of the primary side of the second heat exchanger 9 through the first bypass 16, so that the temperature of the refrigerant entering the liquid cooling server cabinet 11 is increased. In summary, the adjustment of the cooling capacity in the liquid cooling system can be realized by adjusting the opening of the bypass (i.e. the second outlet) of the first three-way valve 17.
Referring to fig. 1, a first temperature detection device 18 for detecting a secondary side inlet water temperature of the first heat exchanger 2, a second temperature detection device 19 for detecting a secondary side outlet water temperature of the first heat exchanger 2, a third temperature detection device 20 for detecting a secondary side inlet water temperature of the second heat exchanger 9, and a fourth temperature detection device 21 for detecting a secondary side outlet water temperature of the second heat exchanger 9 are further disposed in the natural cooling system.
The arrangement of the first temperature detection device 18, the second temperature detection device 19, the third temperature detection device 20 and the fourth temperature detection device 21 enables an operator to accurately know the temperatures of the secondary sides of the first heat exchanger 2 and the second heat exchanger 9 in real time, and adjusts the temperature of supply return water in the natural cooling system according to the detection result, so that the whole cooling system can always meet the cooling requirement of a data center.
Specifically, when the temperatures of the secondary side of the first heat exchanger 2 and the secondary side of the second heat exchanger 9 are detected to be low, an operator can adjust the opening degree of the variable frequency fan and the variable frequency water pump of the cooling tower 1 according to the refrigeration requirement of the data center, so that the temperature of the supply water and the return water in the natural cooling system is increased.
Referring to fig. 1, a second bypass 23 communicating an outlet and an inlet of a cooling tower 1, a third bypass 24 communicating an inlet on a secondary side of a first heat exchanger 2 and an inlet on a secondary side of a second heat exchanger 9, a second three-way valve 25 for adjusting supply of secondary side outlet water of the second heat exchanger 9 to the inlet of the cooling tower 1 and/or the inlet of the second bypass 23, and a third three-way valve 26 for adjusting supply of confluence liquid of outlet water of the cooling tower 1 and outlet water of the second bypass 23 to the inlet of the primary side of the first heat exchanger 2 and/or the inlet of the third bypass 24 are further disposed in the natural heat dissipation system.
When the secondary side temperature of the first heat exchanger 2 and the secondary side temperature of the second heat exchanger 9 are detected to be lower, the parameters of the cooling tower 1 are not adjusted, and the bypass valve of the second three-way valve 25 is opened, so that the inlet of the second three-way valve 25 is communicated with the second outlet, and thus the return water with higher temperature flowing out of the secondary side outlet of the second heat exchanger 9 can be mixed with the water supply with lower temperature flowing out of the outlet of the cooling tower 1 through the second bypass 23 and then enter the first heat exchanger 2 again. The adjusting mode skillfully utilizes the temperature of the return water in the natural cooling system to improve the temperature of the supplied water, and reduces the amount of the return water received by the cooling tower 1, thereby not only improving the temperature of the return water in the natural cooling system, but also reducing the energy consumption required by the natural cooling system for refrigeration, and achieving the requirement of energy-saving refrigeration.
When the first temperature detection device 18 and the second temperature detection device 19 detect that the secondary side temperature of the first heat exchanger 2 is low and the third temperature detection device 20 and the fourth temperature detection device 21 detect that the secondary side temperature of the second heat exchanger 9 is high, the bypass valve of the third three-way valve 26 can be opened and adjusted, so that the inlet of the third three-way valve 26 is communicated with the first outlet and the second outlet, and part of the low-temperature effluent of the cooling tower 1 can directly enter the second heat exchanger 9 after being mixed with the secondary side effluent of the first heat exchanger 2 through the third bypass 24, thereby effectively reducing the secondary side temperature of the second heat exchanger 9 and ensuring good refrigeration effect of the liquid cooling system.
The second three-way valve 25 and the third three-way valve 26 are arranged to realize communication between pipelines at different positions, so that when the temperature of the natural heat dissipation system or the liquid cooling system is higher, parameters of the cooling tower 1 do not need to be adjusted or equipment does not need to be replaced, and cooling of the secondary side of the second heat exchanger 9 for supplying backwater or cooling the liquid cooling system in the natural heat dissipation system can be realized directly by means of the temperature difference of the backwater in the pipelines at different positions in the natural heat dissipation system, so that the operation is convenient, and the energy conservation and the high efficiency.
Referring to fig. 2, as a specific embodiment of the serial liquid-air dual-channel data center refrigeration system provided by the present invention, a first temperature detection device 18, a second temperature detection device 19, a third temperature detection device 20, a fourth temperature detection device 21, a second three-way valve 25, and a third three-way valve 26 are respectively connected to a control device 10. The control device 10 is able to adjust the degree of opening of the second three-way valve 25 and/or the third three-way valve 26 by the temperature of the first heat exchanger 2 and the second heat exchanger 9.
The first temperature detection device 18, the second temperature detection device 19, the third temperature detection device 20, and the fourth temperature detection device 21 may respectively employ temperature sensors, and the second three-way valve 25 and the third three-way valve 26 may respectively employ electrically controlled three-way valves. The use-time control device 10 acquires detection data of each temperature sensor, performs data analysis through a built-in program, and controls the opening degrees of the second three-way valve 25 and the third three-way valve 26 to realize the regulation of the temperature of the supply water and the return water in the natural heat dissipation system and the temperature of the secondary side of the second heat exchanger 9.
The control device 10 realizes automatic control of the second three-way valve 25 and the third three-way valve 26, manual operation is not needed, and the timeliness and the accuracy of adjustment of the second three-way valve 25 and the third three-way valve 26 are greatly improved.
Specifically, the control device 10 may adopt a PLC control system, and a required execution program is pre-stored in the PLC control system before use, so that when the control device 10 recognizes that the temperature values detected by the first temperature detection device 18, the second temperature detection device 19, the third temperature detection device 20, and the fourth temperature detection device 21 are respectively lower than the respective corresponding temperature thresholds, the bypass valve of the second three-way valve 25 is controlled to be opened, so that the inlet of the second three-way valve 25 is communicated with the second outlet, and thus the higher-temperature return water flowing out from the secondary side outlet of the second heat exchanger 9 can be mixed with the lower-temperature supply water flowing out from the outlet of the cooling tower 1 through the second bypass 23 and then enter the first heat exchanger 2 again.
When the control device 10 recognizes that the temperature values detected by the first temperature detection device 18 and the second temperature detection device 19 are respectively lower than the corresponding temperature threshold values, and the temperature values detected by the third temperature detection device 20 and the fourth temperature detection device 21 are respectively higher than the corresponding temperature threshold values, the bypass valve of the third three-way valve 26 is controlled to be opened by a certain angle, so that the inlet of the third three-way valve 26 is communicated with the first outlet and the second outlet, and thus, part of the low-temperature effluent of the cooling tower 1 can directly pass through the third bypass 24 to be mixed with the secondary-side effluent of the first heat exchanger 2 and then enter the second heat exchanger 9.
Referring to fig. 1, a second circulation pump 22 is disposed between an outlet of the cooling tower 1 and an outlet of the second bypass 23 as a specific embodiment of the serial liquid-air dual-channel data center refrigeration system provided by the present invention.
An outlet of the cooling tower 1 is communicated with an inlet of a second circulating pump 22, an outlet of the second circulating pump 22 is communicated with a secondary side inlet of the first heat exchanger 2, a secondary side outlet of the first heat exchanger 2 is communicated with a secondary side inlet of the second heat exchanger 9, and a primary side outlet of the second heat exchanger 9 is communicated with an inlet of the cooling tower 1.
The second circulating pump 22 ensures the smoothness of the circulation of the supply water and the return water in the natural heat dissipation system, and ensures the good refrigeration effect of the natural heat dissipation system.
Referring to fig. 1, a fourth bypass 27 communicating an inlet and an outlet of the secondary side of the second heat exchanger 9 and a fourth three-way valve 28 for adjusting the supply amount of the mixed liquid of the secondary side effluent of the first heat exchanger 2 and the effluent of the third bypass 24 to the inlet of the secondary side of the second heat exchanger 9 and/or the outlet of the secondary side of the second heat exchanger 9 are further disposed in the natural heat dissipation system.
When a certain pipeline in the liquid cooling system breaks down, the bypass valve of the fourth three-way valve 28 can be completely opened, so that the inlet of the fourth three-way valve 28 is communicated with the second outlet, the secondary side inlet valve of the second heat exchanger 9 is turned off, the liquid cooling system is removed from the refrigerating system, the air cooling system bears all heat loads, and emergency and certain time can be delayed.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. Series-type liquid-gas double-channel data center refrigerating system, its characterized in that: the system comprises a cooling tower, a first heat exchanger, a liquid storage tank, a fluorine pump, an expansion valve, an air conditioner tail end, an electromagnetic valve, a compressor, a second heat exchanger and a liquid cooling server cabinet;
the cooling tower, the secondary side of the first heat exchanger and the secondary side of the second heat exchanger are connected in series and communicated in a circulating manner to form a natural heat dissipation system;
the primary side of the first heat exchanger, the liquid storage tank, the fluorine pump, the air conditioner tail end, the electromagnetic valve and the compressor are communicated in a circulating mode to form an air cooling system; the gas cooling system is also internally provided with a first one-way valve connected with the fluorine pump in parallel and a second one-way valve connected with the electromagnetic valve and the compressor series pipeline in parallel;
the primary side of the second heat exchanger is communicated with the liquid cooling server cabinet in a circulating mode to form a liquid cooling system;
the air cooling system is connected with the liquid cooling system in parallel and the air cooling system is not communicated with the liquid cooling system; the air cooling system and the liquid cooling system exchange heat with the natural heat dissipation system through the first heat exchanger and the second heat exchanger respectively.
2. The series liquid-air dual channel data center refrigerant system of claim 1, wherein: a third one-way valve is further connected in series between the compressor and the primary side of the first heat exchanger, the electromagnetic valve, the compressor and the third one-way valve are connected in series to form a compressor refrigeration pipeline, and the compressor refrigeration pipeline is connected in parallel with the second one-way valve.
3. The series liquid-air dual channel data center refrigerant system of claim 1, wherein: and a first circulating pump is also arranged between the outlet of the primary side of the second heat exchanger and the inlet of the liquid cooling server cabinet.
4. The series liquid-air dual channel data center refrigerant system of claim 1, wherein: a first bypass which is communicated with an outlet and an inlet of the primary side of the second heat exchanger and a first three-way valve which is used for adjusting the supply of the outlet water of the liquid cooling server cabinet to the inlet of the first bypass and/or the inlet of the primary side of the second heat exchanger are arranged in the liquid cooling system;
the outlet water of the liquid cooling server cabinet can flow to the inlet of the second heat exchanger through the inlet and the first outlet of the first three-way valve, and can also flow together and flow back to the inlet of the liquid cooling server cabinet through the inlet of the first three-way valve, the second outlet of the first three-way valve, and the outlet water of the first bypass and the second heat exchanger.
5. The series liquid-air dual channel data center refrigerant system of any one of claims 1-4, wherein: and a first temperature detection device for detecting the water temperature at the secondary side inlet of the first heat exchanger, a second temperature detection device for detecting the water temperature at the secondary side outlet of the first heat exchanger, a third temperature detection device for detecting the water temperature at the secondary side inlet of the second heat exchanger and a fourth temperature detection device for detecting the water temperature at the secondary side outlet of the second heat exchanger are also arranged in the natural heat dissipation system.
6. The series liquid-air dual channel data center refrigerant system of claim 5, wherein: the natural heat dissipation system is also internally provided with a second bypass communicated with the outlet and the inlet of the cooling tower, a third bypass communicated with the secondary side inlet of the first heat exchanger and the secondary side inlet of the second heat exchanger, a second three-way valve used for adjusting the supply amount of the secondary side effluent of the first heat exchanger to the inlet of the cooling tower and/or the inlet of the second bypass, and a third three-way valve used for adjusting the supply amount of the confluence liquid of the secondary side effluent of the cooling tower and the second bypass to the primary side inlet of the first heat exchanger and/or the inlet of the third bypass.
7. The series liquid-air dual channel data center refrigerant system of claim 6, wherein: the first temperature detection device, the second temperature detection device, the third temperature detection device, the fourth temperature detection device, the second three-way valve and the third three-way valve are respectively connected with a control device;
the control device can adjust the opening degree of the second three-way valve and/or the third three-way valve by the temperatures of the first heat exchanger and the second heat exchanger.
8. The series liquid-air dual channel data center refrigerant system of claim 6, wherein: and a second circulating pump is arranged between the outlet of the cooling tower and the second bypass outlet.
9. The series liquid-air dual channel data center refrigerant system of any one of claims 6-8, wherein: and a fourth bypass communicated with an inlet and an outlet of the secondary side of the second heat exchanger and a fourth three-way valve used for adjusting the supply amount of mixed liquid of the secondary side effluent of the first heat exchanger and the outlet of the third bypass to the inlet of the secondary side of the second heat exchanger and/or the outlet of the secondary side of the second heat exchanger are/is further arranged in the natural heat dissipation system.
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| CN202110364962.5A CN114698329A (en) | 2019-06-13 | 2019-06-13 | Serial-type liquid-gas double-channel data center refrigerating system |
| CN201910511951.8A CN110381698B (en) | 2019-06-13 | 2019-06-13 | Serial-type liquid-gas double-channel data center refrigerating system |
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| CN111988973A (en) * | 2020-10-09 | 2020-11-24 | 北京百度网讯科技有限公司 | Air-cooled heat dissipation equipment and cooling system |
| CN112153878B (en) * | 2020-10-22 | 2022-06-21 | 苏州浪潮智能科技有限公司 | Pipeline device for switching liquid cooling pipes in series-parallel connection, heat dissipation system and switching method |
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| CN106979569A (en) * | 2017-03-24 | 2017-07-25 | 广东申菱环境系统股份有限公司 | Interior circulation stand alone type twin-stage liquid gas binary channels natural cooling data center heat dissipation system |
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Address after: 361000 108, zone a, Huaxun building, software park, torch hi tech Zone, Xiamen City, Fujian Province Patentee after: XIAMEN HUARUISHENG INTELLIGENT TECHNOLOGY Co.,Ltd. Patentee after: Kehua Data Co.,Ltd. Address before: 361000 108, zone a, Huaxun building, software park, torch hi tech Zone, Xiamen City, Fujian Province Patentee before: XIAMEN HUARUISHENG INTELLIGENT TECHNOLOGY Co.,Ltd. Patentee before: XIAMEN KEHUAHENGSHENG LIMITED BY SHARE Ltd. |