CN113056167A - Liquid cooling server heat exchange equipment based on separate heat pipe heat exchanger - Google Patents
Liquid cooling server heat exchange equipment based on separate heat pipe heat exchanger Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 277
- 238000001816 cooling Methods 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000003507 refrigerant Substances 0.000 claims abstract description 53
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 230000008020 evaporation Effects 0.000 claims abstract description 30
- 238000009833 condensation Methods 0.000 claims abstract description 27
- 230000005494 condensation Effects 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims abstract description 17
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000003682 fluorination reaction Methods 0.000 description 28
- 238000001914 filtration Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000000306 component Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 7
- 239000008358 core component Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- H05K7/208—Liquid cooling with phase change
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Abstract
The invention provides a liquid cooling server heat exchange device based on a separated heat pipe exchanger, which comprises: the system comprises a liquid cooling server consisting of a server and a fluorinated liquid, a separated heat pipe heat exchanger loaded with a refrigerant, and a cooling box loaded with cold water; the server is immersed in the fluorinated liquid, one part of the separated heat pipe exchanger is immersed in the fluorinated liquid, the other part of the separated heat pipe exchanger is immersed in cold water, heat transfer among the fluorinated liquid, the refrigerant and the cold water is realized through phase change heat exchange of the refrigerant in the separated heat pipe exchanger, and the temperature of the server is reduced. The split heat pipe exchanger includes: the evaporation section, the condensation section, and the air duct and the liquid guide pipe for connecting the evaporation section and the condensation section. According to the heat exchange equipment, the heat exchange equipment is efficient, energy-saving, occupied area-saving and high in data stability and safety, meanwhile, the sealing performance and the safety of the liquid cooling server are improved, the non-conducting rate of the fluorinated liquid is guaranteed to the maximum extent, and the leakage rate of the fluorinated liquid is reduced.
Description
Technical Field
The invention belongs to the field of liquid cooling of data centers and servers, and particularly relates to liquid cooling server heat exchange equipment based on a separated hot tube heat exchanger.
Background
At present, the server cooling system of the traditional data center takes air as a medium to cool the servers of the data center. Heat emitted by the servers in the machine room is taken away by cold air heat exchange of the precise air conditioners (CRACs). The air conditioning mode comprises refrigeration units, water pumps, fans, precise air conditioners and other electric equipment. Under the condition that the data center is arranged in a region with low average air temperature all the year around, the PUE value of the IDC machine room is about 1.8-2.0 under the condition that the air cooling system is used with high energy efficiency. Meanwhile, the conventional air-cooled server data center has large power consumption, large occupied area, poor data stability and high maintenance cost.
The Ministry of industry and communications proposes that in order to accelerate the construction of green data centers, the average energy consumption of the data centers is required to basically reach the international advanced level by 2022 years, and the electric energy use efficiency value of newly-built large and ultra-large data centers reaches below 1.4. The method is used for accelerating the popularization and application of the green technical products, and the green data center is used for accelerating the popularization and application of the technical products, and the key field comprises a liquid cooling server system.
Therefore, server liquid cooling technology is the main direction of current technological innovation.
The liquid cooling is 100-2000 times higher than the air cooling heat exchange efficiency, so that the liquid cooling system has great advantage on the heat dissipation of the chip. The heat transfer medium of the server liquid cooling system is fluorinated liquid, so that the PUE value of the server liquid cooling system can be reduced to below 1.06 due to the improvement of the heat exchange efficiency, and the energy consumption of the data center is greatly reduced. Typically, the allowable operating temperature of the server CPU is below 70 ℃, and if the allowable operating temperature is exceeded, the reliability is reduced by 10% for every 2 ℃ increase. The specific heat capacity of the fluorinated liquid is in order of magnitude amplification compared with that of air, so that a large amount of heat can be absorbed to keep the temperature change small, the temperature of a key CPU and a GPU of the liquid cooling server can be well controlled, and the phenomenon that the temperature of a chip is instantly and greatly increased to influence the work of the server is avoided.
At present, in the liquid cooling technology of the server, most of the liquid cooling technologies are in a plate type heat exchange mode, and the fluorinated liquid of the server is cooled through cooling water. However, at present, the fluorinated liquid needs to enter a plate heat exchanger for heat exchange through a magnetic pump. The fluorinated liquid is extremely volatile, non-conductive, high in density compared with water, insoluble in water and expensive, and the fluorinated liquid increases the risk of leakage of the fluorinated liquid through a plate type heat exchange system; and the comdenstion water in the air gets into the liquid circulation system that fluoridizes easily, if water content is many, can increase the server and electrically conduct and burn out and lead to losing the risk of data.
Disclosure of Invention
The invention aims to provide a liquid cooling server heat exchange device based on a separated heat pipe heat exchanger, so that the problems that the leakage rate of a fluorinated liquid is high, and a server is easy to burn and lose data in the conventional liquid cooling system are solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a liquid cooling server indirect heating equipment based on disconnect-type heat pipe exchanger, liquid cooling server indirect heating equipment includes: the system comprises a liquid cooling server consisting of a server and a fluorinated liquid, a separated heat pipe heat exchanger loaded with a refrigerant, and a cooling box loaded with cold water; the server is immersed in the fluoridized liquid, one part of the separated heat pipe exchanger is immersed in the fluoridized liquid, the other part of the separated heat pipe exchanger is immersed in cold water, heat transfer among the fluoridized liquid, the cold medium and the cold water is realized through phase change heat exchange of a refrigerant in the separated heat pipe exchanger, and the temperature of the server is reduced.
According to a preferred aspect of the present invention, the split heat pipe heat exchanger includes: the device comprises an evaporation section, a condensation section, and an air duct and a liquid guide pipe which are used for connecting the evaporation section and the condensation section, wherein the evaporation section is immersed in fluorinated liquid, the condensation section is immersed in cold water, and the fluorinated liquid, a refrigerant and the cold water are not communicated with each other.
According to a preferable scheme of the invention, an evaporation section and a condensation section of the separated heat pipe heat exchanger are arranged vertically, and a plurality of radiating fins are densely distributed on the evaporation section and the condensation section.
According to a preferred embodiment of the present invention, the server and the fluorinated liquid are contained in a fluorinated liquid tank, and the fluorinated liquid tank and the cooling tank are independent from each other.
According to a preferable scheme of the invention, the liquid cooling server further comprises a fluorination liquid circulating pump arranged outside the fluorination liquid tank body, so that the circulation flow of the fluorination liquid is realized.
According to a preferable scheme of the invention, the liquid cooling server further comprises a fluorinated liquid filter arranged outside the fluorinated liquid tank body and used for removing impurities and water in the fluorinated liquid.
According to a preferable scheme of the invention, the liquid cooling server further comprises a filtration gas phase valve arranged at the top of the fluorination liquid tank body and used for ensuring that the interior of the fluorination liquid tank body is at normal pressure.
According to a preferable scheme of the invention, the heat exchange equipment further comprises an electric control cabinet which is used for supplying power to the server and the fluorinated liquid circulating pump.
According to a preferable scheme of the invention, the heat exchange equipment further comprises a UPS emergency power supply.
According to a preferable scheme of the invention, the number of the separated heat pipe heat exchangers is two, the number of the cooling boxes is two, the heat exchange equipment is accommodated in a cuboid cabinet, the fluorinated liquid tank is arranged in the cabinet in the middle, the server is immersed in the fluorinated liquid tank, and the two separated heat pipe heat exchangers and the two cooling boxes are symmetrically arranged on the left side and the right side of the server.
According to a preferred aspect of the invention, the server is a blade server.
According to a preferred scheme of the invention, the liquid cooling server heat exchange equipment based on the separated heat pipe exchanger mainly comprises four modules: firstly, place the liquid cooling server rack of blade server and liquid of fluoridizing, secondly the disconnect-type heat pipe exchanger of built-in refrigerant, thirdly the closed cooling box of heat pipe exchanger condensation segment, fourthly the liquid of fluoridizing of guaranteeing the normal operating of liquid cooling system is from circulating system cabinet body and automatically controlled cabinet body constitution.
According to the liquid cooling server heat exchange equipment provided by the invention, three liquids are used together, wherein the three liquids are respectively a fluorinated liquid, cold water and a refrigerant different from the fluorinated liquid and the cold water. It should be understood that the refrigerant is a substance that readily absorbs heat to become a gas and releases heat to become a liquid. The heat transfer of first time is server and fluorination liquid, and the server soaks in airtight fluorination liquid box, and server work produces the heat, gives the fluorination liquid with the heat, and the fluorination liquid temperature risees. The second heat exchange is that the liquid refrigerant in the evaporation section of the heat pipe heat exchanger absorbs the heat of the fluorinated liquid to vaporize so as to realize heat conduction, the liquid refrigerant is loaded in the evaporation section of the heat pipe heat exchanger soaked in the fluorinated liquid, the temperature of the fluorinated liquid rises to exceed the vaporization temperature of the refrigerant, the refrigerant vaporizes to take away the heat in the fluorinated liquid, and the temperature of the fluorinated liquid is reduced; the third heat exchange is that the condensation section of the heat pipe heat exchanger is liquefied by a refrigerant in a steam state, the condensation section of the heat pipe heat exchanger is soaked in cold water of an independent cooling box body, gaseous refrigerant is liquefied into liquid refrigerant due to the cooling of the cold water, the heat generated by the liquefaction of the refrigerant is absorbed by the cold water, and the liquefied refrigerant flows to the evaporation section of the low heat pipe heat exchanger.
Furthermore, in order to ensure that the fluorinated liquid is clean and does not contain water, the fluorinated liquid filtering device is additionally arranged, the filter can filter impurities and water in the fluorinated liquid, is connected with the fluorinated liquid circulating pump and is positioned outside the fluorinated liquid tank body, and the filter element is convenient to replace and maintain in the fluorinated liquid filtering circulating system cabinet body.
Furthermore, in order to ensure the stable pressure in the server cabinet, the invention is additionally provided with a safety valve and a filtering gas phase valve. It should be understood that, the heat transfer process and server rack maintenance service all can cause the liquid of fluoridizing to volatilize when opening the server rack to arouse the internal gas space of jar to change, when the pressure reduces to the setting value in the jar, filter the gas phase valve and open, the jar gets into the air, and the moisture in the air is filtered through filtering the relief valve to the air, and the non-conductivity of liquid is fluoridized to the at utmost assurance, and dry air gets into in the jar, makes jar internal pressure rise, and jar internal pressure is in safe range. When the pressure in the tank rises to a set value, the safety valve is opened, air is discharged from the tank, the pressure in the tank is reduced, and the pressure in the tank is in a safe range. The whole process follows the phase change heat exchange principle of the heat pipe heat exchanger, and the heat exchange efficiency of the server cooling system is improved, so that the server runs in a low-temperature liquid environment, and the downtime condition is not easy to occur.
According to a preferred scheme of the invention, an electric control cabinet is added, and the electric control cabinet and the liquid are separated and independently controlled, so that the safety is high. Simultaneously, in order to avoid data loss caused by power failure of the server, an independent UPS emergency power supply is additionally arranged in an electric control cabinet area, and once the mains supply is powered off, the UPS emergency power supply can immediately supply power to the whole system.
According to the heat exchange equipment of the liquid cooling server, one of the core components is the separated heat pipe exchanger, the inside of the heat pipe exchanger is filled with the refrigerant, the heat pipe exchanger is sealed after being filled once, the leakage risk is reduced, and the heat pipe exchanger is recycled through phase change and has high cost performance. The evaporation section of the heat pipe exchanger is soaked in the fluorinated liquid, the condensation section is soaked in the cold water, in order to further increase the heat dissipation area of the heat pipe exchanger, the heat exchange is more sufficient, the evaporation section and the condensation section are respectively provided with the heat dissipation fins, and the heat exchange efficiency is higher.
The separated heat pipe exchanger is one heat transferring element with high heat conducting performance, and has the advantages of high heat conducting performance, excellent isothermal performance, capacity of changing heat transferring area, capacity of transferring heat remotely, controllable temperature, etc. The cold liquid and the hot fluid in the heat pipe exchanger flow separately, and the counter-flow heat exchange of the cold fluid and the hot fluid can be realized easily. The temperature at which the refrigerant vaporizes may be selected based on the temperature at which the fluorinated liquid can be raised, or the temperature at which the refrigerant liquefies may be selected based on the temperature of the in-situ cold water. The heat pipe heat exchanger is applied to the fluorinated liquid, and two liquids of fluorinated liquid and cold water in the prior art are directly subjected to heat exchange to be changed into heat exchange of three liquids, so that the space sealing of the fluorinated liquid can be ensured, the fluorinated liquid and the cold water are prevented from being contacted and leaked, condensed water is avoided, the risk of water containing of the fluorinated liquid is greatly reduced, the stability and the safety of a server are improved, the small size of equipment and high heat exchange efficiency are realized, the system cost is greatly reduced, the electric loss of the equipment is reduced due to the intervention of an intermediate refrigerant, and the economic benefit is remarkable.
According to the invention, the fluorinated liquid is in a separate circulating working space and is not in contact with the other two liquids. The normal operating condition of the whole system is equivalent to a closed storage tank, the liquid is fluorinated in the tank through filling, the liquid circulation is fluorinated for ensuring, the better flow of the fluorinated liquid is ensured, the more uniform overall temperature of the heat transfer of the fluorinated liquid is made to be different as much as possible, the self-circulation pump of the fluorinated liquid is increased, the fluorinated liquid enters the self-circulation pump from the bottom, the tank body is entered from the top, the fluorinated liquid is made to flow circularly, and the temperature diffusion is accelerated.
In summary, the present invention provides a liquid cooling server heat exchange device based on a separated heat pipe heat exchanger, wherein the heat exchange process includes firstly conducting the heat dissipated by the server chip to the fluorinated liquid in the cabinet, secondly vaporizing the refrigerant in the heat pipe heat exchanger by absorbing the heat of the fluorinated liquid, and thirdly liquefying the vaporized refrigerant in the condensation section of the heat pipe by cooling the cold water and then returning the liquefied refrigerant to the evaporation section of the heat pipe. In the liquid-cooled phase-change heat exchange process of the server, the temperature raised by the server after heat dissipation is higher than the vaporization temperature of the refrigerant, and the temperature of cold water is lower than the condensation temperature of the refrigerant, namely the temperature of the server is reduced through the phase change of the refrigerant, the temperature of a server chip can be reduced by 10-20 ℃, and the calculation performance of the chip is improved. From the energy-saving point of view, the PUE value of the conventional IDC machine room is about 1.8-2.0. By the device, the PUE value of the server liquid cooling system based on the separated hot tube heat exchanger can be reduced to below 1.06, and compared with an air cooling data center, the device saves energy consumption by 42-48%. According to the invention, the sealing performance and the safety of the liquid cooling system of the server are improved, the moisture in the air can be prevented from entering the fluorinated liquid, the non-conductivity of the fluorinated liquid is ensured to the maximum extent, and the leakage rate of the fluorinated liquid in the liquid cooling system is reduced. The equipment disclosed by the invention is a heat dissipation equipment supporting a high-power density server, is efficient and energy-saving, and greatly reduces the occupied area and the damage rate of the server, so that the data stability and reliability of a data center are provided, and the data security is higher.
Drawings
Fig. 1 is a perspective view of the cabinet of a heat exchange device of a liquid cooling server according to a preferred embodiment of the present invention;
fig. 2 is a three-dimensional schematic view of the inside of the cabinet of the heat exchange device of the liquid cooling server shown in fig. 1;
FIG. 3 is a front view of the interior of the cabinet of the liquid cooled server heat exchange apparatus shown in FIG. 2;
FIG. 4 is a front view of a functional combination section of a cabinet body of the heat exchange equipment of the liquid cooling server shown in FIG. 2;
FIG. 5 is a simplified model of the distribution diagram of three different liquids and the schematic view of the direction of the liquid flow inside the heat pipe exchanger as shown in FIG. 3;
FIG. 6 is a simplified schematic illustration of the sealed cabinet assembly for storing and circulating the filtered fluorinated liquid and the flow direction of the fluorinated liquid shown in FIG. 3;
FIG. 7 is a three-dimensional schematic diagram of a heat pipe exchanger as a core component of the heat exchange device of the liquid cooling server shown in FIG. 2;
fig. 8 is a front view of a heat pipe exchanger as a core component of the heat exchange device of the liquid cooling server shown in fig. 2.
Wherein the meanings of the reference symbols are as follows:
system reference description: 1. a liquid-cooled server cabinet; 2. a heat pipe heat exchanger; 3. a blade-type liquid cooling server; 4. filtering the gas phase valve; 5. a safety valve; 6. a fluorinated liquid filter; 7. a fluorination liquid self-circulating pump; 8. an electric control cabinet; 9. a UPS emergency power supply; A. a fluorination liquid; B. a refrigerant; C. cold water; 101. A fluorinated liquid tank body; 102. a cooling box body of the heat pipe heat exchanger; 103. a fluorinated liquid filtering self-circulation system cabinet body; 104. an electric control cabinet body; 201. an evaporation section of the heat pipe heat exchanger; 202. a gas guide tube of the heat pipe heat exchanger; 203. A condensation section of the heat pipe heat exchanger; 204. a liquid guide tube of the heat pipe heat exchanger; 205. and (4) radiating fins.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 4, the heat exchange device of the liquid cooling server according to a preferred embodiment of the present invention mainly uses three heat exchange liquids: the server comprises a fluorinated liquid A, a refrigerant B and cold water C, wherein the refrigerant B is a fluid different from the fluorinated liquid and the cold water, the fluid is easy to absorb heat to become gas and easy to release heat to become liquid, the refrigerant B is a liquid with the liquefaction and vaporization temperature customized according to the requirement, and the temperature of the server is finally reduced through the temperature transmission of the three liquids. The structure and function of each component are described in detail below.
The server in the data center is divided into two forms of air cooling and liquid cooling at present, the implementation of the invention requires the type of the server suitable for the liquid cooling, and according to the invention, as the server needs to be immersed in the fluorinated liquid, all materials forming the server are required to be insoluble in the fluorinated liquid or can not be extracted by the fluorinated liquid. The cold water tank is connected with the condensation section of the heat pipe exchanger, and the cold water heat exchange technology is a conventional technology known in the air conditioner industry.
As shown in fig. 3, the liquid cooling server cabinet 1 is a whole cabinet shell, and is mainly manufactured by processing a stainless steel tank body, and does not contain installation components in each cabinet body, as can be seen from fig. 4, the whole exterior of the liquid cooling server cabinet 1 is a cuboid, and is divided into four component areas, namely a fluorinated liquid tank body 101; the heat pipe exchanger cools the case 102; a fluorinated liquid self-circulation system cabinet body 103; the four areas of the electric control cabinet body 104 are respectively independent. The fluorination liquid tank body 101 is a stainless steel tank body, a fluorination liquid A is filled in the fluorination liquid tank body, the blade type liquid cooling server 3 and the evaporation section 201 of the heat pipe exchanger are placed, and the upper top cover is provided with a filtration gas phase valve 4 and a safety valve 5. The cooling box body 102 of the heat pipe exchanger is a stainless steel water tank which can be used for water inlet and water outlet, is arranged in bilateral symmetry, is filled with cold water C inside, and is provided with a condensing section 203 of the heat pipe exchanger. The fluorination liquid self-circulation system cabinet body 103 is a stainless steel cabinet body, a fluorination liquid filter 6 is placed inside, and the fluorination liquid self-circulation pump 7. The electric control cabinet body 104 is a stainless steel cabinet body, and the electric control cabinet 8 and the UPS emergency power supply 9 are arranged inside the electric control cabinet body.
The heat pipe exchanger 2 is a core component of the present invention, and as shown in fig. 7 to 8, the heat pipe exchanger 2 mainly includes five components: the heat pipe heat exchanger comprises a heat pipe heat exchanger evaporation section 201, a heat pipe heat exchanger air duct 202, a heat pipe heat exchanger condensation section 203, a heat pipe heat exchanger liquid guide pipe 204 and radiating fins 205. Referring to fig. 3 and 8, the evaporation section 201 and the condensation section 203 of the heat pipe exchanger are respectively located in two different boxes, and are respectively immersed in two different liquids, so that the heat pipe exchanger is a separate heat pipe exchanger. The evaporation section 201 of the heat pipe exchanger and the condensation section 203 of the heat pipe exchanger are connected with a liquid guide pipe 204 of the heat pipe exchanger through a gas guide pipe 202 of the heat pipe exchanger, the gas guide pipe 202 of the heat pipe exchanger and the liquid guide pipe 204 of the heat pipe exchanger both penetrate through two boxes, an internal refrigerant B can circulate, and the outside and the walls of the boxes are fully welded to ensure that independent liquid of the two boxes is not communicated. The heat dissipation fins 205 are a current mature process and are densely distributed on all heat exchange tubes, so that the heat dissipation area is increased, and the heat exchange efficiency of the whole system is increased.
The blade type liquid cooling server 3 is a working component, a large number of chips are integrated on the server, and the whole set of system has the functions that the heat emitted by the blade type liquid cooling server 3 during working is transferred through a proper way, so that the blade type liquid cooling server 3 can normally work, data is stored, and the whole data center is controllable.
The filtering gas phase valve 4 is a mechanical valve element provided with a spring, is closed in a normal state, is not communicated with the inside and the outside, is opened to supplement pressure in the tank when the pressure in the tank is less than a set value of the valve element, is closed again when the pressure in the tank is increased to the set value, and has the function of filtering water in air. According to the invention, the filtering gas phase valve 4 is arranged at the top of the fluorination liquid tank body 101, when the internal pressure of the fluorination liquid tank body 101 is reduced to be less than the set pressure of the valve element, the filtering gas phase valve 4 is opened, external air enters the tank, and the condition that excessive negative pressure is not generated in the tank is ensured. After the air enters the filtering gas phase valve 4, the air is firstly absorbed by the filtering filter element to ensure that the air entering the tank is dry air, so that the water does not enter the tank, the electric conduction is avoided, and the working safety of the blade type liquid cooling server 3 is improved.
The safety valve 5 is also a mechanical valve element provided with a spring, is closed in a normal state, is not communicated with the inside and the outside, is opened when the pressure in the tank is greater than a set value of the valve element, releases pressure in the tank, and is closed again when the pressure in the tank is less than the set value. According to the invention, the safety valve 5 is arranged at the top of the fluorinated liquid tank body 101, when the internal pressure of the fluorinated liquid tank body 101 rises to be higher than the set pressure of the valve, the safety valve 5 is opened, and air in the tank is discharged, so that the internal pressure of the fluorinated liquid tank body 101 is not too high, excessive positive pressure is not generated in the tank, and the safety is improved.
The fluorination liquid filter 6 is a filter, and an internally-installed filter element can filter out impurities and moisture in the fluorination liquid A, so that the fluorination liquid A in the whole set of system is ensured to be clean and free of water, and the filter element in the fluorination liquid filter 6 is convenient and simple to replace.
Fluoridize the liquid and be a magnetic drive pump from circulating pump 7, can circulate the liquid A of fluoridizing in the liquid jar body 101, fluoridize the liquid and communicate with the liquid jar body 101 bottom of fluoridizing from circulating pump 7 import, fluoridize the liquid and communicate from circulating pump 7 export and the liquid jar body 101 top of fluoridizing, should fluoridize the circulation that the liquid can realize jar internal fluoride from circulating pump 7, the diffusion because flow with higher speed temperature.
The electric control cabinet 8 is used for electric power central control of the whole system, on one hand, the fluorinated liquid self-circulation pump 7 is controlled to be started through electric power, on the other hand, the blade type liquid cooling server 3 is supplied with power and network supply signals, one circuit of the electric control cabinet 8 is provided by commercial power, and the other circuit is a standby circuit and is communicated with the UPS emergency power supply 9. The UPS emergency power supply 9 is a standby circuit of the whole system, and once the commercial power is cut off, the UPS emergency power supply can be started immediately, so that the blade type liquid cooling server 3 and the whole system are not powered off, and the data are ensured to be safer.
After the system components are introduced, the phase change working principle of the heat pipe exchanger 2, which is the core component of the heat exchange equipment of the whole set of liquid cooling server, is described below, and as shown in fig. 5, the model is a simplified model of the whole set of system. In the first aspect, distribution diagrams of three different liquids are shown, wherein a fluorinated liquid A is filled in a fluorinated liquid tank 101, a refrigerant B is filled in a heat pipe exchanger 2, and cold water C is filled in a cooling tank body 102 of the heat pipe exchanger. In the second aspect, the liquid flow directional diagram inside the heat pipe exchanger 2 is shown, the evaporation section 201 of the heat pipe exchanger is soaked in the fluorinated liquid a, the refrigerant B in the evaporation section 201 of the heat pipe exchanger absorbs heat in the fluorinated liquid a to vaporize, the gaseous refrigerant enters the cooling box 102 of the heat pipe exchanger through the air duct 202 of the heat pipe exchanger, the refrigerant B releases heat in the cold water C to liquefy into the liquid refrigerant B, and the liquid refrigerant B flows back to the evaporation section 201 of the heat pipe exchanger through the air duct 204 of the heat pipe exchanger. The air duct 202 of the heat pipe heat exchanger and the liquid guide pipe 204 of the heat pipe heat exchanger both penetrate through the fluorinated liquid tank body 101 and the cooling tank body 102 of the heat pipe heat exchanger, the internal refrigerant B can circulate, and the exterior and the wall of the tank body are fully welded, so that the fluorinated liquid A and the cold water C in the two tank bodies are not communicated.
The specific phase change heat exchange working process is as follows: the evaporation section 201 of the phase change heat exchanger is externally immersed in fluorinated liquid A provided with the blade type liquid cooling server 3, and a refrigerant B is arranged inside the evaporation section 201, when the blade type liquid cooling server 3 works, a large amount of heat is generated, the temperature of the fluorinated liquid A rises, the refrigerant B in a liquid state in the evaporation section 201 of the phase change heat exchanger is heated, the refrigerant B absorbs the heat and then changes from a liquid state to a gaseous state, the vaporization process absorbs the heat, the temperature of the fluorinated liquid A is reduced, and therefore the temperature of the blade type liquid cooling server 3 is reduced. The refrigerant B in a gas state is sent to the phase change heat exchanger condensation section 203 through the gas guide pipe 202, the refrigerant B in the phase change heat exchanger condensation section 203 is in a gas state, the cold water C in a liquid state is outside, the temperature of the cold water C is reduced, the refrigerant B in the phase change heat exchanger condensation section 203 is converted from the gas state to the liquid state, and the heat emitted in the liquefaction process is absorbed by the cold water C. The liquid refrigerant B is transported back to the inside of the evaporation section 201 of the phase-change heat exchanger through the liquid guide pipe 204. The heat transfer is realized through phase change in the process, and the heat generated when the blade type liquid cooling server 3 works is taken out to cold water C through the refrigerant B in the heat pipe exchanger 2. Refrigerant B, cold water C and fluoridize liquid A and all do not contact in this in-process, fluoridize liquid A safety seal, the efficiency is good, and the security is high, has practiced thrift a large amount of power losses, and the data center's that has significantly reduced occupation of land and follow-up maintenance cost.
As shown in fig. 6, a schematic diagram of the fluoride liquid filtering cycle and the valve installation of the whole set of liquid-cooled server heat exchange equipment is shown. Fluoridize liquid A and be located an independent circulation working space and fluoridize the liquid jar body 101 in, the whole system normal operating condition is equivalent to a closed storage tank, and liquid A is fluoridized in the jar interior filling, and blade formula liquid cooling server 3 submergence is in this fluoridize liquid A, for guaranteeing to fluoridize liquid A circulation, has increased and has fluoridized liquid from circulating pump 7, guarantees that the liquid A that flows is higher with server inner core piece heat exchange efficiency. The fluorination liquid A enters the fluorination liquid from the bottom of the fluorination liquid tank body 101 and enters the fluorination liquid tank body 101 from the top from the circulating pump 7, so that the fluorination liquid A circularly flows, and the temperature is more uniform by accelerating the temperature diffusion. Fluoridize liquid itself and have the extraction nature, can dissolve mutually with many organic substances, for the operation of assurance system, in order to guarantee to fluoridize liquid A totally and not contain water, server rack peripheral hardware is supplementary from the clean liquid filter 6 that fluoridizes, can filter impurity and moisture in the liquid A of fluoridizing, and link to each other with the liquid circulating pump 7 of fluoridizing, is in the liquid jar body 101 outside of fluoridizing, convenient renew cartridge and maintenance. The fluoridizing liquid A of server rack is non-dielectric medium, moisture gets into in the air then the conductivity can rise in the fluoridizing liquid, the proportion of moisture then can influence the use of liquid cooling system in the fluoridizing liquid rises, for guaranteeing server rack internal pressure stability, for guaranteeing safety, fluoridizing liquid tank body 101 top has increased relief valve 5 and filtration gas phase valve 4, when jar internal pressure reduces the setting value, filtration gas phase valve 4 is opened, the jar internal admission air, the air filters the moisture in the air through filtering gas phase valve 4, maximum assurance water does not get into the fluoridizing liquid tank body 101 in, dry air gets into in the jar, make jar internal pressure rise, after jar internal pressure reaches the setting value, filtration gas phase valve 4 closes. When the pressure in the tank rises to a set value, the safety valve 5 is opened, air is discharged from the tank, the pressure in the tank is reduced, the pressure in the tank is in a safety range and reaches a set lowest value of the safety valve 5, and the safety valve 5 is closed. The design capacity of the whole heat pipe heat exchanger 2 ensures that the fluoridized liquid can not reach a boiling point state, so that the gas space does not change greatly.
The electric control cabinet 8 and the UPS 9 are located in the area of the strong and weak current electric control cabinet body 104, the area is an independent area with electric components, the electric-liquid separation is guaranteed, and the electric control cabinet is safer and more convenient to operate. Because the safety and the continuity of the data center are very important, the UPS 9 is added to ensure that the whole system can still work continuously in the state of mains supply cut-off, and data loss or equipment damage cannot be caused.
In conclusion, according to the liquid cooling server heat exchange equipment based on the separated heat pipe heat exchanger, the blade type liquid cooling server 3 of the data center can efficiently exchange heat, the occupied space is smaller, energy is saved, consumption is reduced, and the safety of data and equipment is greatly improved.
The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (10)
1. The utility model provides a liquid cooling server indirect heating equipment based on disconnect-type heat pipe exchanger which characterized in that, liquid cooling server indirect heating equipment includes: the system comprises a liquid cooling server consisting of a server and a fluorinated liquid, a separated heat pipe heat exchanger loaded with a refrigerant, and a cooling box loaded with cold water; the server is immersed in the fluorinated liquid, one part of the separated heat pipe exchanger is immersed in the fluorinated liquid, the other part of the separated heat pipe exchanger is immersed in cold water, heat transfer among the fluorinated liquid, the refrigerant and the cold water is realized through phase change heat exchange of the refrigerant in the separated heat pipe exchanger, and the temperature of the server is reduced.
2. The liquid cooled server heat exchange apparatus of claim 1, wherein the split heat pipe heat exchanger comprises: the device comprises an evaporation section, a condensation section, and an air duct and a liquid guide pipe which are used for connecting the evaporation section and the condensation section, wherein the evaporation section is immersed in fluorinated liquid, the condensation section is immersed in cold water, and the fluorinated liquid, a refrigerant and the cold water are not communicated with each other.
3. The liquid-cooled server heat exchange equipment according to claim 2, wherein the evaporation section and the condensation section of the split heat pipe exchanger are arranged perpendicular to each other, and a plurality of radiating fins are densely distributed on the evaporation section and the condensation section.
4. The liquid-cooled server heat exchange unit of claim 3, wherein the server and the fluorinated liquid are contained in a fluorinated liquid tank that is independent of the cooling box.
5. The liquid cooling server heat exchange device of claim 4, wherein the liquid cooling server further comprises a fluorinated liquid circulating pump arranged outside the fluorinated liquid tank body, so as to realize the circulating flow of the fluorinated liquid.
6. The liquid cooling server heat exchange device of claim 4, wherein the liquid cooling server further comprises a fluorinated liquid filter disposed outside the fluorinated liquid tank for removing impurities and water from the fluorinated liquid.
7. The liquid-cooled server heat exchange device of claim 4, wherein the liquid-cooled server further comprises a filtered gas phase valve mounted on top of the fluorinated liquid tank for ensuring that the interior of the fluorinated liquid tank is at atmospheric pressure.
8. The liquid-cooled server heat exchange unit of claim 5, further comprising an electrical control cabinet for powering the server and the fluorinated liquid circulation pump.
9. The liquid-cooled server heat exchange device of claim 1, further comprising a UPS emergency power supply.
10. The liquid-cooled server heat exchange device according to claim 5, wherein the number of the split heat pipe exchangers is two, the number of the cooling boxes is two, the liquid-cooled server heat exchange device is accommodated in a rectangular cabinet, the fluorinated liquid tank is centrally arranged in the cabinet, the server is immersed in the fluorinated liquid tank, and the two split heat pipe exchangers and the two cooling boxes are symmetrically arranged on the left side and the right side of the server.
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