CN213044024U - Refrigerating system with natural cooling technology - Google Patents
Refrigerating system with natural cooling technology Download PDFInfo
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- CN213044024U CN213044024U CN202021777418.0U CN202021777418U CN213044024U CN 213044024 U CN213044024 U CN 213044024U CN 202021777418 U CN202021777418 U CN 202021777418U CN 213044024 U CN213044024 U CN 213044024U
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Abstract
The utility model discloses a take refrigerating system of natural cooling technique, include: the system comprises a refrigerating unit, load equipment to be cooled, a buffer heating module and a power supply module for supplying power to the refrigerating unit; a cooling liquid outlet of the refrigerating unit is connected with a cooling liquid inlet of the load equipment to be cooled, and a cooling liquid outlet of the load equipment to be cooled is connected with a cooling liquid inlet of the refrigerating unit; a through valve and a temperature sensor are arranged at a cooling liquid inlet of the load equipment to be cooled, and the load equipment to be cooled also comprises a load bypass which is connected with the load equipment to be cooled in parallel and is provided with a bypass valve; when the temperature sensor detects that the temperature of the cooling liquid is lower than the condensation temperature, the bypass valve is opened, and the straight-through valve is closed, so that the cooling liquid is heated by the buffer heating module and then flows back to the refrigerating unit. The refrigerating system with the natural cooling technology can improve the cooling efficiency and the reliability of system operation.
Description
Technical Field
The utility model relates to a server cooling field, in particular to take refrigerating system of natural cooling technique.
Background
With the development of the internet and cloud computing service requirements, the integration level of high-density cabinet equipment in a data center is higher and higher, the power consumption is higher and higher, and the power Usage efficiency pue (power Usage efficiency) is the total energy consumption of the data center/the energy consumption of IT equipment, which is generally considered to be approximately equal to the sum of the energy consumption of the IT equipment and the energy consumption of IT cooling equipment) is still generally higher than 2.2. In addition, the cooling equipment of the data center needs to be started all year round, so the data center is a typical refrigeration application field which needs all year round refrigeration and pursues high-efficiency energy conservation.
The working operation environment temperature range of the existing compressor refrigeration system is about-15 ℃, and when the environment temperature is lower than-15 ℃, the operation range exceeds the operation range of the compressor, so that the safety and the reliability of the system operation cannot be ensured. However, in some industrial fields, cold water is still needed at low ambient temperature below-15 ℃, such as the field of data center refrigeration. The natural cooling technology is a green energy-saving refrigeration technology, and can exchange heat when the temperature of return water is higher than the ambient temperature, so that a large amount of cold energy can be obtained by using a small amount of fan power consumption, and low-temperature refrigeration can be realized at the ambient temperature at which the compressor cannot operate.
At present, the cooling mode of a load device (server) at the tail end of a data center refrigerating system is basically air cooling, and the mode has the problems of high energy consumption, high noise and poor heat dissipation effect; most importantly, the application of the refrigeration requirements of the novel server of the data center and the liquid cooling server cannot be met by the existing refrigeration system, and the cold water generated by the refrigeration system cannot be directly introduced into the liquid cooling server to cool the chip of the server, so that the problem of condensation of the chip of the liquid cooling server can be caused, and the problem of server damage is caused.
Therefore, how to improve the reliability of the cooling system of the data center becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take refrigerating system of natural cooling technique, this refrigerating system can promote the reliability of cooling efficiency and system operation.
In order to achieve the above object, the utility model provides a take refrigerating system of natural cooling technique, include: the system comprises a refrigerating unit, load equipment to be cooled, a buffer heating module and a power supply module for supplying power to the refrigerating unit;
a cooling liquid outlet of the refrigerating unit is connected with a cooling liquid inlet of the load equipment to be cooled, and a cooling liquid outlet of the load equipment to be cooled is connected with a cooling liquid inlet of the refrigerating unit; a through valve and a temperature sensor are arranged at a cooling liquid inlet of the load equipment to be cooled, and the load equipment to be cooled also comprises a load bypass which is connected with the load equipment to be cooled in parallel and is provided with a bypass valve;
when the temperature sensor detects that the temperature of the cooling liquid is lower than the condensation temperature, the bypass valve is opened, and the straight-through valve is closed, so that the cooling liquid is heated by the buffer heating module and then flows back to the refrigerating unit.
Optionally, the refrigerating unit is connected in parallel with a standby refrigerating unit, and the refrigerating unit and a cooling liquid inlet of the standby refrigerating unit are both provided with a liquid inlet gate valve.
Optionally, the refrigeration unit and the backup refrigeration unit both include a compressor refrigeration unit and an air-cooled heat exchanger connected in series with the compressor refrigeration unit.
Optionally, the cooling liquid outlets of the refrigerating unit and the standby refrigerating unit are both provided with a liquid outlet gate valve and a one-way valve.
Optionally, a fan shared with the compressor refrigeration unit is arranged at the air-cooled heat exchanger.
Optionally, the buffer heating module comprises a buffer water tank and an electric heater arranged in the buffer water tank; the electric heater is connected with the power supply module, when the bypass valve is opened, the electric heater is started to heat, and the compressor refrigerating unit stops running.
Optionally, the power supply module is specifically a mains power supply cabinet.
Optionally, the power supply module further includes a standby power supply cabinet and a dual power supply switching cabinet, and the mains supply cabinet and the standby power supply cabinet are both connected to the dual power supply switching cabinet.
Optionally, the buffer tank further comprises a liquid supplementing module, and a liquid supplementing outlet of the liquid supplementing module is connected with the buffer tank.
Compared with the prior art, the refrigerating system with the natural cooling technology provided by the utility model cools the cooling liquid through the refrigerating unit and leads the cooling liquid into the load equipment to be cooled for cooling, and the power supply module is used for supplying power to the refrigerating unit; for avoiding the coolant temperature to hang down excessively, when setting up the temperature sensor at the coolant liquid entrance of treating cooling load equipment and detecting the temperature and be less than the condensation temperature, through valve closes, the bypass valve is opened, the coolant liquid flows back to refrigerating unit after heating buffer module, through valve opens when treating the temperature is higher than the condensation temperature and treats cooling load equipment and cool off, avoided the coolant liquid to hang down the chip that causes load equipment such as condensation damage server excessively, the setting up of buffering heating module can make coolant liquid temperature promote fast and satisfy the entry temperature requirement of treating cooling load equipment simultaneously. The reliability of the cooling system is improved, and the state that the straight-through valve is closed for a long time is avoided. And when the buffer heating module starts heating, the output of the refrigerating unit can be properly reduced, the temperature of the cooling liquid at the inlet of the load equipment to be cooled is ensured to be proper, and the cooling efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a system diagram of a refrigeration system with natural cooling technology according to an embodiment of the present invention;
fig. 2 is a system diagram of a refrigeration system with natural cooling technology according to another embodiment of the present invention.
The system comprises a 1-mains supply cabinet, a 2-standby power supply cabinet, a 3-double power supply switching cabinet, a 4-refrigerating unit, a 5-standby refrigerating unit, a 6-compressor refrigerating unit, a 7-air cooling heat exchanger, an 8-fan, a 9-liquid inlet gate valve, a 10-liquid outlet gate valve, an 11-one-way valve, a 12-buffer water tank, a 13-electric heater, a 14-bypass valve, a 15-direct-way valve, a 16-temperature sensor, 17-to-be-cooled load equipment, an 18-liquid supplementing water tank, a 19-liquid supplementing normally-open valve, a 20-liquid supplementing water pump, a 21-liquid supplementing one-way valve and a 22-floating ball liquid level switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a system diagram of a refrigeration system with natural cooling technology according to an embodiment of the present invention, and fig. 2 is a system diagram of a refrigeration system with natural cooling technology according to another embodiment of the present invention.
The utility model provides a take refrigerating system of natural cooling technique when treating cooling load equipment 17 and cool off, need detect the coolant temperature of treating cooling load equipment 17's coolant liquid entrance through temperature sensor 16, avoid coolant temperature low let in cause condensation and condensation drippage when treating cooling load equipment 17 to damage server chip etc.. The present application provides in particular a load bypass arranged and connected in parallel with the load device 17 to be cooled, the load bypass being provided with a bypass valve; when the temperature sensor 16 detects that the temperature of the cooling liquid is lower than the condensation temperature, the through valve 15 is closed, the bypass valve 14 is opened to introduce the cooling liquid into the buffer heating module for heating, the heated cooling liquid flows back to the refrigerating unit 4 and is conveyed to a cooling liquid inlet of the load equipment 17 to be cooled again, and after the temperature sensor 16 detects that the temperature meets the cooling requirement, the bypass valve 14 is closed, the through valve 15 is opened, and the load equipment 17 to be cooled is cooled.
The cooling requirement of the load equipment 17 to be cooled is met, the damage to the load equipment 17 to be cooled caused by condensation caused by too low temperature of the cooling liquid is avoided, the problems that the cooling liquid always maintains a low temperature, the straight-through valve 15 is closed for a long time and the load equipment 17 to be cooled cannot be cooled are effectively solved due to the arrangement of the buffering heating module, and therefore the cooling efficiency and the reliability of a cooling system are improved.
The present invention provides a refrigeration system with natural cooling technology, which is described in more detail below with reference to the accompanying drawings and specific embodiments.
In the embodiment shown in fig. 1, the power supply module adopts the mains supply cabinet 1, also the refrigerating unit 4 is connected with the mains supply cabinet 1, the coolant outlet of the refrigerating unit 4 is connected with the coolant inlet of the load equipment 17 to be cooled through the through valve 15, the coolant outlet of the load equipment 17 to be cooled is communicated with the coolant inlet of the refrigerating unit 4, and the load bypass is connected in parallel with the load equipment 17 to be cooled. The outlet of the load bypass and the outlet of the load device 17 to be cooled are jointly collected to the buffer heating module.
When the temperature sensor 16 detects that the temperature of the coolant at the coolant inlet of the load equipment 17 to be cooled is higher than the condensation temperature, the bypass valve 14 is closed, the coolant enters the heat exchanger of the load equipment 17 to be cooled through the through valve 15, the coolant flows to the buffer heating module after being subjected to heat exchange cooling on the load equipment 17 to be cooled, at the moment, the buffer heating module only plays a role in storing the buffer coolant and does not heat the coolant, and the coolant of the buffer heating module flows to the coolant inlet of the refrigerating unit 4 to be cooled and circulates in the next round.
When the temperature sensor 16 detects that the temperature of the coolant at the coolant inlet of the load equipment 17 to be cooled is lower than the condensation temperature, the through valve 15 is closed, the coolant enters the buffer heating module through the bypass valve 14 to be heated, and the power of the refrigerating unit 4 can be reduced as required at the moment, so that the coolant with the increased temperature can meet the temperature requirement of the coolant inlet of the load equipment 17 to be cooled.
The through valve 15, the bypass valve 14, the buffer heating module and the power adjustment of the refrigerating unit 4 can be manually controlled by an operator according to the temperature sensor 16, or a controller such as a single chip microcomputer, a PLC or an industrial control computer connected with the temperature sensor 16, the through valve 15, the bypass valve 14, the buffer heating module and the refrigerating unit 4 can be set for automatic switching, and the through valve 15 and the bypass valve 14 can be selected from floating point electromagnetic valves. The power supply module further comprises a standby power supply cabinet 2, and the standby power supply cabinet 2 is connected with the mains supply cabinet 1 through a dual power supply switching cabinet 3, so that the power supply requirement is met.
In the above embodiment, the buffer heating module specifically adopts the buffer water tank 12 and the electric heater 13 disposed in the buffer water tank 12, and the electric heater 13 is connected to the controller and the mains power supply cabinet 1. A temperature detection mechanism can be arranged in the buffer water tank 12 according to requirements, and when the cooling liquid is heated to a preset temperature value, the electric heater 13 is controlled to be powered off to stop heating.
In the embodiment shown in fig. 2, the refrigeration system with the natural cooling technology further includes a liquid supplementing module, the liquid supplementing module is used for supplementing cooling liquid to the buffer water tank 12, that is, the whole circulation pipeline, the liquid supplementing module includes a liquid supplementing water tank 18, a liquid supplementing water pump 20 and a liquid supplementing check valve 21, the liquid supplementing check valve 21 enables the supplementing liquid to flow to the buffer water tank 12 only from the liquid supplementing water pump 20, a liquid supplementing normally open valve 19 is arranged between the liquid supplementing water tank 18 and the liquid supplementing water pump 20, a liquid level detection mechanism is arranged in the liquid supplementing water tank 18 as required, if a floating ball liquid level switch 22 is arranged, the liquid level in the liquid supplementing water tank 18 can be visually observed through the floating ball liquid level switch 22, so that the stable operation of the system is ensured, and the liquid supplementing water pump 20 is prevented from idling and.
Optionally, the refrigeration system with natural cooling technology further includes a backup refrigeration unit 5, the backup refrigeration unit 5 is connected in parallel with the refrigeration unit 4, in other words, a cooling liquid outlet of the backup refrigeration unit 5 is also connected to a cooling liquid inlet of the load device 17 to be cooled, and a cooling liquid inlet of the backup refrigeration unit 5 is connected to a cooling liquid outlet of the load device 17 to be cooled. Therefore, when the refrigerating unit 4 breaks down or the refrigerating capacity of the refrigerating unit 4 cannot meet the cooling requirement of the load equipment 17 to be cooled, the standby refrigerating unit 5 is started, and the reliability of the system is improved.
And cooling liquid inlets of the refrigerating unit 4 and the standby refrigerating unit 5 are respectively provided with a liquid inlet gate valve 9, and cooling liquid outlets of the refrigerating unit 4 and the standby refrigerating unit 5 are respectively provided with a liquid outlet gate valve 10 and a one-way valve 11, so that the refrigerating unit 4 or the standby refrigerating unit 5 can be switched to refrigerate through the liquid inlet gate valve 9 and the liquid outlet gate valve 10.
The refrigerating unit 4 and the backup refrigerating unit 5 both comprise an air-cooled heat exchanger 7 and a compressor refrigerating unit 6, in an optional embodiment, the compressor refrigerating unit 6 and the air-cooled heat exchanger 7 are connected in series, the compressor refrigerating unit 6 cools the cooling liquid by compressing a refrigerant and exchanging heat with the cooling liquid through the heat exchangers, and the air-cooled heat exchanger 7 cools the cooling liquid by means of the ambient temperature.
When the ambient temperature is too low and the compressor cannot operate, the cooling liquid can be cooled by the air-cooled heat exchanger 7 through natural cooling. When the ambient temperature is higher, start compressor refrigerating unit 6 and cool down to the coolant liquid can, one advantage of air-cooled heat exchanger 7 and compressor refrigerating unit 6 series connection is need not to carry out the switching of coolant liquid flow path.
And when the temperature of the cooling liquid is lower than the ambient temperature but the natural cooling capacity of the air-cooled heat exchanger 7 is not enough, starting the compressor refrigerating unit 6. The cooling liquid is primarily cooled by the air-cooled heat exchanger 7 and then further cooled by the compressor refrigerating unit 6, so that the economical efficiency of the refrigerating system is improved.
In another alternative embodiment, the compressor refrigerating unit 6 may be connected in parallel with the air-cooled heat exchanger 7, and at this time, the flow path of the cooling liquid needs to be switched according to the ambient temperature, when the ambient temperature is too high, the cooling liquid is cooled by the branch of the compressor refrigerating unit 6, and when the ambient temperature is low, the cooling liquid is cooled by the branch of the air-cooled heat exchanger 7, so that the operation economy is improved.
In order to enhance the heat exchange efficiency of the air-cooled heat exchanger 7, a fan 8 can be arranged at the air-cooled heat exchanger 7 to increase the heat convection capability of the air-cooled heat exchanger 7. The fan 8 preferably adopts the fan 8 shared with the compressor refrigerating unit 6, the heat exchange of the condenser is enhanced under the action of the fan 8 in the compressor refrigerating unit 6, and the fan 8 of the compressor refrigerating unit 6 is shared through the air cooling heat exchanger 7, so that the equipment cost is saved. The buffering heating module can be connected to a cooling liquid inlet of the refrigerating unit 4 or the standby refrigerating unit 5, a branch pipe can be led out through the one-way valve structure to be connected to a cooling liquid inlet of the load equipment 17 to be cooled, and the temperature requirement of the cooling liquid inlet of the load equipment 17 to be cooled is met through mixed heating of the cooling liquid.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The above is a detailed description of the refrigeration system with natural cooling technology provided by the present invention. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A refrigeration system with free cooling, comprising: the system comprises a refrigerating unit (4), load equipment (17) to be cooled, a buffer heating module and a power supply module for supplying power to the refrigerating unit (4);
a cooling liquid outlet of the refrigerating unit (4) is connected with a cooling liquid inlet of the load equipment (17) to be cooled, and a cooling liquid outlet of the load equipment (17) to be cooled is connected with a cooling liquid inlet of the refrigerating unit (4); a cooling liquid inlet of the load equipment (17) to be cooled is provided with a straight-through valve (15) and a temperature sensor (16), and the load equipment further comprises a load bypass which is connected with the load equipment (17) to be cooled in parallel and is provided with a bypass valve (14);
when the temperature sensor (16) detects that the temperature of the cooling liquid is lower than the condensation temperature, the bypass valve (14) is opened, the straight-through valve (15) is closed, and the cooling liquid flows back to the refrigerating unit (4) after being heated by the buffering heating module.
2. The refrigerating system with natural cooling technology as claimed in claim 1, characterized in that the refrigerating unit (4) is connected in parallel with a backup refrigerating unit (5), and the cooling liquid inlets of the refrigerating unit (4) and the backup refrigerating unit (5) are both provided with a liquid inlet gate valve (9).
3. Refrigeration system with free cooling technology according to claim 2, characterized in that the refrigeration unit (4) and the backup refrigeration unit (5) each comprise a compressor refrigeration unit (6) and an air-cooled heat exchanger (7) in series with the compressor refrigeration unit (6).
4. The refrigerating system with natural cooling technology as claimed in claim 3, characterized in that the cooling liquid outlets of the refrigerating unit (4) and the backup refrigerating unit (5) are provided with a liquid outlet gate valve (10) and a one-way valve (11).
5. The refrigerating system with natural cooling technology as claimed in claim 3, characterized in that a fan (8) shared with the compressor refrigerating unit (6) is arranged at the air-cooled heat exchanger (7).
6. The refrigerating system with natural cooling technology according to any one of claims 3 to 5, characterized in that the buffer heating module comprises a buffer water tank (12) and an electric heater (13) disposed inside the buffer water tank (12); the electric heater (13) is connected with the power supply module, when the bypass valve (14) is opened, the electric heater (13) is started to heat, and the compressor refrigerating unit (6) stops running.
7. Refrigeration system with free cooling technology according to claim 6, characterized in that the power supply module is in particular a mains power cabinet (1).
8. The refrigerating system with natural cooling technology as claimed in claim 7, characterized in that the power supply module further comprises a standby power supply cabinet (2) and a dual power supply switching cabinet (3), and the mains power supply cabinet (1) and the standby power supply cabinet (2) are both connected with the dual power supply switching cabinet (3).
9. The refrigerating system with natural cooling technology as recited in claim 8, further comprising a liquid supplementing module, wherein a liquid supplementing outlet of the liquid supplementing module is connected with the buffer water tank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021777418.0U CN213044024U (en) | 2020-08-21 | 2020-08-21 | Refrigerating system with natural cooling technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021777418.0U CN213044024U (en) | 2020-08-21 | 2020-08-21 | Refrigerating system with natural cooling technology |
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| CN213044024U true CN213044024U (en) | 2021-04-23 |
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| CN202021777418.0U Active CN213044024U (en) | 2020-08-21 | 2020-08-21 | Refrigerating system with natural cooling technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437386A (en) * | 2021-05-20 | 2021-09-24 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Thermal management system of power battery |
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2020
- 2020-08-21 CN CN202021777418.0U patent/CN213044024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437386A (en) * | 2021-05-20 | 2021-09-24 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Thermal management system of power battery |
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