CN110996617A - Server water-cooling heat dissipation system with redundant phase change heat transfer element and control method - Google Patents
Server water-cooling heat dissipation system with redundant phase change heat transfer element and control method Download PDFInfo
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- CN110996617A CN110996617A CN201911250626.7A CN201911250626A CN110996617A CN 110996617 A CN110996617 A CN 110996617A CN 201911250626 A CN201911250626 A CN 201911250626A CN 110996617 A CN110996617 A CN 110996617A
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- 238000001816 cooling Methods 0.000 title claims abstract description 121
- 238000012546 transfer Methods 0.000 title claims abstract description 82
- 230000008859 change Effects 0.000 title claims abstract description 77
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 353
- 239000000498 cooling water Substances 0.000 claims description 34
- 239000008400 supply water Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 16
- 238000012423 maintenance Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 230000001932 seasonal effect Effects 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
- H05K7/20763—Liquid cooling without phase change
- H05K7/20772—Liquid cooling without phase change within server blades for removing heat from heat source
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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
- H05K7/20809—Liquid cooling with phase change within server blades for removing heat from heat source
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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
- H05K7/20836—Thermal management, e.g. server temperature control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a server water-cooling heat dissipation system with redundant phase change heat transfer elements and a control method, wherein the server water-cooling heat dissipation system comprises at least one phase change heat transfer unit and a water-cooling conveying unit, wherein the at least one phase change heat transfer unit is connected with the water-cooling conveying unit through a parallel connection head; the phase change heat transfer unit comprises a fixing plate, an auxiliary phase change heat transfer element, a main cooling cavity, an auxiliary cooling cavity and a water inlet parallel connector; the water-cooling conveying unit comprises a first four-way joint, a main pump, an auxiliary pump, a filter, a water outlet union joint, a main water tank, a water inlet pump, a cold water tank, an intermediate pump, a hot water tank and a water outlet pump; the invention can effectively and accurately radiate the core unit of the data center and ensure the safe and reliable operation of the data center.
Description
Technical Field
The invention relates to the field of water-cooling heat dissipation, in particular to a server water-cooling heat dissipation system with redundant phase change heat transfer elements and a control method.
Background
With the rapid development of internet technology and communication technology, especially the arrival of 5G technology, data centers are more and more widely used. The core electronic components (such as the north bridge chip, the south bridge chip and the memory bank) of the server in the data center generate a large amount of heat when operating efficiently, if the heat cannot be dissipated in time, the performance and operation of the server are inevitably affected, the possibility of data damage or loss is greatly increased, and even the whole data center may be paralyzed. Therefore, how to quickly remove the heat generated by the data center is particularly important.
At present, a traditional data center machine room generally adopts a method for installing an air conditioner to dissipate heat, and although the method can effectively solve the heat dissipation problem of the data center, the air conditioner must be continuously turned on throughout the year, so that the consumed electric quantity is very large. According to statistics, the traditional data center adopts an air conditioner heat dissipation method, the electric quantity consumed by the air conditioner can reach 40% -50% of the electric quantity consumed by the whole machine room at most, and more seriously, the electric quantity consumed by the air conditioner is not directly acted on key electronic components directly heated in a server, but is mostly wasted in the machine room environment. For such problems, researchers have proposed using a water-cooled heat pipe heat dissipation method to dissipate heat from key heat-generating chips of the server. Although the method can realize direct heat dissipation of key components of the server, the method brings additional problems, namely when the water-cooled heat pipe adopted at present dissipates heat, a water-cooled pipeline can be blocked due to water quality or water scale in the long-term circulating flow process, more seriously, the heat pipe directly contacts the chip to dissipate heat and does not adopt a redundant design or a backup design, once the heat pipe module fails or breaks, the heat of the chip cannot be timely transferred to the water-cooled end of the heat pipe, and the heat of the chip rises instantly and even causes the failure of the whole server.
Disclosure of Invention
To overcome the disadvantages and shortcomings of the prior art, it is a primary object of the present invention to provide a server water-cooling heat dissipation system with redundant phase change heat transfer elements. The invention is a reliable water-cooling heat dissipation system with redundant phase change heat transfer elements, which can effectively ensure the stable, reliable and continuous operation of a data center.
The invention provides a control method of a server water-cooling heat dissipation system with redundant phase change heat transfer elements, which achieves the purposes of energy conservation and high efficiency by controlling each device in the heat dissipation system in the process of realizing heat dissipation.
The invention adopts the following technical scheme for realizing the primary purpose:
a server water-cooling heat dissipation system with redundant phase change heat transfer elements comprises at least one phase change heat transfer unit and a water-cooling conveying unit, wherein the at least one phase change heat transfer unit is connected with the water-cooling conveying unit through a parallel connection head;
the phase change heat transfer unit comprises a fixing plate, an auxiliary phase change heat transfer element, a main cooling cavity, an auxiliary cooling cavity and a water inlet parallel connector;
the main phase change heat transfer element is fixed on the heat source part through a fixing plate, and the main phase change heat transfer element, the main cooling cavity and the water inlet parallel connector are communicated in sequence;
the auxiliary phase change heat transfer element is fixed on the heat source part through a fixing plate, and the auxiliary phase change heat transfer element, the auxiliary cooling cavity and the water inlet parallel connector are sequentially communicated;
the water-cooling conveying unit comprises a first four-way joint, a main pump, an auxiliary pump, a filter, a water outlet union joint, a main water tank, a water inlet pump, a cold water tank, an intermediate pump, a hot water tank and a water outlet pump;
the first four-way joint, the main pump, the filter and the main water tank are communicated through a water pipe;
the first four-way joint, the auxiliary pump, the filter and the main water tank are communicated through a water pipe;
the water inlet pump, the cold water tank, the intermediate pump, the hot water tank and the water outlet pump are communicated through water pipes;
the main water tank is respectively communicated with the water inlet pump and the water outlet pump through water pipes.
Preferably, an inlet of the auxiliary cooling cavity is sequentially communicated with a first normally closed switch valve, a second four-way joint and a first safety valve through water pipes, and the first safety valve is connected with a water inlet parallel connection joint;
the outlet of the auxiliary cooling cavity is sequentially communicated with a third four-way joint and a second safety valve through water pipes, and the second safety valve is communicated with the outlet parallel joint.
Preferably, the outlet of the main cooling cavity is communicated with a second four-way joint, and the second four-way joint is connected with the water inlet parallel connection joint;
the inlet of the main cooling cavity is connected with a third four-way joint through a water pipe, and the third four-way joint is connected with a water outlet parallel connection joint.
Preferably, the main water tank is connected with a second normally closed switch valve as a cooling water outlet, and the cold water tank is connected with a third normally closed switch valve as a hot water outlet.
Preferably, the safety valve further comprises an alarm, and the alarm is connected with the fixing plate, the first normally closed switch valve, the first safety valve, the second safety valve, the third safety valve, the auxiliary pump and the main pump through electric wires.
Preferably, the fixing plate is provided with a temperature sensor, and the temperature sensor is connected with the first normally closed switch valve and controls the first normally closed switch valve to be opened and closed;
a flow rate measuring sensor is arranged on a water pipe connected with the first safety valve, the second safety valve and the third safety valve, and the flow rate measuring sensor is used for controlling the opening and closing of the first safety valve, the second safety valve and the third safety valve;
the auxiliary pump is connected with the main pump through a speed sensor;
the main water tank is provided with a temperature sensor which is connected with the water outlet pump;
the main water tank is provided with a water level sensor which is connected with a water inlet pump;
the cold water tank is provided with a temperature sensor.
A control method of a server water-cooling heat dissipation system with redundant phase change heat transfer elements comprises the following steps:
firstly, respectively filling cooling water in a main water tank and a cold water tank, and connecting all sensors, all water pumps and related electric devices with a power supply, wherein the hot water tank is empty, secondly, when a main pump fails, a water pipe and a main cooling cavity are not blocked, the temperature of a fixing plate is below a set temperature T0, the water level in the main water tank is above H2 and the water temperature in the main water tank is below T1, the main pump pumps the cooling water out of the main water tank, the cooling water firstly passes through a filter, then flows through a first four-way joint, a water inlet parallel joint and a second four-way joint and then enters the main cooling cavity;
the main phase-change heat transfer element transfers heat generated by the heat source part to the main cooling cavity, cooling water in the main cooling cavity takes away the heat, and the third four-way joint and the water outlet parallel joint of the cooled water mirror after temperature rise flow into the main water tank.
Preferably, when the main pump stops due to a fault, the speed measuring sensor sends a signal to the auxiliary pump, and the auxiliary pump continues to supply water to the system.
Preferably, when the temperature of the fixed plate rises to T0 due to a fault in the main phase change heat transfer element, the temperature sensor on the fixed plate immediately transmits a signal to the first normally closed switch valve and the alarm, so that the cooling water in the second four-way joint flows into the auxiliary cooling cavity and simultaneously warns related workers;
at the moment, the auxiliary phase-change heat transfer element takes away heat generated by the heat source part in time through cooling water in the auxiliary cooling cavity, and heated hot water flows into the main water tank after flowing through the third four-way joint and the unblocked pipeline.
Preferably, the first normally closed switch valve and the alarm are deactivated when the temperature of the fixed plate falls below T0.
The invention has the beneficial effects that:
(1) the invention can adopt N phase change heat transfer units, and the N phase change heat transfer unit bodies are connected with the water-cooling conveying unit through the parallel connection joint, thereby realizing the rapid heat dissipation of a plurality of heat source pieces at the same time.
(2) The invention arranges a main pump, an auxiliary pump, a main phase change heat transfer element and an auxiliary phase change heat transfer element in the heat dissipation system, when one of the main pump, the auxiliary pump and the auxiliary phase change heat transfer element has a problem, the auxiliary part can be started immediately to maintain the continuous operation of the whole system.
(3) The invention adopts multi-channel heat dissipation, and can ensure that the heat dissipation effect of the data center is not influenced by weather seasons and regional environments, thereby realizing the aim of high-efficiency, reliable and uninterrupted operation of the data center.
Drawings
FIG. 1 is a schematic of a two-dimensional structure of the present invention;
FIG. 2 is a schematic of the three-dimensional structure of the present invention;
FIG. 3 is a schematic diagram of the logical relationship in the control process of the present invention;
FIG. 4(a) is a front view of an auxiliary phase change heat transfer element;
FIG. 4(b) is an isometric view of an auxiliary phase change heat transfer element;
FIG. 5(a) is a front view of the primary phase change heat transfer element;
FIG. 5(b) is an isometric view of the primary phase change heat transfer element;
FIG. 6(a) is an oblique top view of the main cooling chamber;
FIG. 6(b) is an oblique bottom view of the main cooling chamber;
FIG. 7 is a schematic three-dimensional structure of the main water tank;
FIG. 8(a) is a cross-sectional view of a four-way joint;
fig. 8(b) is an isometric view of a four-way joint.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Examples
As shown in fig. 1 and 2, a server water-cooling heat dissipation system with redundant phase change heat transfer elements includes at least one phase change heat transfer unit and a water-cooling conveying unit, where the phase change heat transfer unit includes a fixing plate 1, an auxiliary phase change heat transfer element 2, an auxiliary cooling cavity 3, a main phase change heat transfer element 18, a main cooling cavity 17, a first normally closed switch valve 4A, second and third four- way joints 5B and 5C, first and second safety valves 6A and 6B, a water pipe 22, a parallel connection joint 16A, an alarm 20, and an electric wire 21.
The fixing plate fixes the auxiliary phase change heat transfer element and the main phase change heat transfer element on a heat source element for heat conduction, and the heat source element is a key electronic component mainly generating heat in the server, such as a north bridge chip, a south bridge chip, a memory bank and other electronic components with high heat generation.
The auxiliary phase change heat transfer element 2 is connected with the auxiliary cooling cavity 3, and the main phase change heat transfer element 18 is connected with the main cooling cavity 17. And a first normally closed switch valve 4A, a second four-way joint 5B, a first safety valve 6A and a water inlet parallel connection joint 16A are connected in series at the inlet of the auxiliary cooling cavity 3 through a water pipe. And a third four-way joint 5C and a second safety valve 6B are connected in series at the outlet of the auxiliary cooling cavity 3 through a water pipe, and the second safety valve 6B is communicated with a water outlet parallel joint 16B.
The entrance of the main cooling cavity 17 is connected with a second four-way joint 5B in series through a water pipe, and the second four-way joint 5B is connected with a water inlet parallel connection joint 16A. The outlet of the main cooling cavity 17 is connected with a third four-way joint 5C in series through a water pipe 22, and the third four-way joint is connected with a water outlet parallel connection head 16B.
The water-cooling conveying unit II comprises a first four-way joint 5A, an auxiliary pump 7, a main pump 15, a filter 14, a water inlet parallel connection head 16A, a water outlet parallel connection head 16B, an alarm 20, a water pipe 22, second and third normally closed switch valves 4B and 4C, a main water tank 8, a water inlet pump 9, a cold water tank 10, an intermediate pump 11, a hot water tank 12, a water outlet pump 13 and a third safety valve 6C;
the first four-way joint 5A, the main pump 15, the filter 14 and the main water tank 8 in the water-cooling conveying unit II are connected in series through water pipes. Similarly, the first four-way joint 5A, the auxiliary pump 7, the filter 14 and the main water tank 8 are connected in series through water pipes. The water inlet pump 9, the cold water tank 10, the intermediate pump 11, the hot water tank 12 and the water outlet pump 13 are connected in series through water pipes. The main water tank 8 is respectively connected with a water inlet pump 9 and a water outlet pump 13 through water pipes. The main water tank 8 is connected with a second normally closed switch valve 4B as a cooling water inlet, and the cold water tank 10 is connected with a third normally closed switch valve 4C as a hot water outlet. The alarm 20 is respectively connected with the fixing plate 1, the first normally closed switch valve 4A, the first safety valve 6A, the second safety valve 6B, the third safety valve 6C, the auxiliary pump 7 and the main pump 15 through electric wires 21, wherein the dotted line parts are the connection positions of the electric wires and the related sensors.
The first four-way joint 5A is connected with a water inlet parallel connection joint 16A.
The working process of the whole heat dissipation system is as follows:
first, the main water tank 8 and the cold water tank 10 are filled with cooling water and all sensors, all water pumps and associated electrical consumers are connected to the power supply, wherein the hot water tank 12 is left empty. Next, when the main pump 15 is not broken, the water pipe and the main temperature reduction chamber 17 are not clogged, the temperature of the fixing plate is below the set temperature T0, the water level in the main water tank 8 is above H2, and the water temperature in the main water tank 8 is below T1, the main pump 15 draws the cooling water from the main water tank 8, passes through the filter 14, flows through the first four-way joint 5A, the water inlet and connecting head 16A, and the second four-way joint 5B, and then enters the main temperature reduction chamber 17.
At this time, the main phase change heat transfer element 18 transfers the heat generated by the heat source 19 to the main cooling cavity 17, at this time, the cooling water in the main cooling cavity 17 takes away the heat, and then the heated hot water in the main cooling cavity 17 flows through the third four-way joint 5C and the water outlet parallel joint 16B and then flows back to the main water tank 8.
When the main pump 15 is out of service due to a malfunction, the sensors on the main pump 15 immediately transmit relevant signals to the auxiliary pump 7 and the alarm 20 so that the auxiliary pump 7 continues to supply water to the system while the relevant staff is alerted by the alarm 20.
When any section of the main section of the water pipe 22 is blocked, the flow rate sensors on the two ends of the water pipe immediately transmit related signals to the first safety valve 6A or the second safety valve 6B or the third safety valve 6C and the alarm 20 on the opposite side, so that the first safety valve 6A or the second safety valve 6B or the third safety valve 6C is opened and related workers are warned at the same time.
When the temperature of the fixed plate 1 rises to T0 due to the increase of the thermal resistance in the main phase change heat transfer element 18 or other reasons, the temperature sensor on the fixed plate 1 immediately transmits relevant signals to the first normally closed switch valve 4A and the alarm 20, so that the cooling water in the second four-way joint 5B flows into the auxiliary cooling cavity 3 and simultaneously warns relevant workers. At this time, the auxiliary phase change heat transfer element 2 takes away the heat generated by the heat source 19 in time through the cooling water in the auxiliary cooling chamber 3, and the heated hot water flows through the third four-way joint 5C and the unblocked pipeline and then flows into the main water tank 8.
The first normally closed switch valve 4A and the alarm 20 are stopped only when the temperature of the fixed plate 1 falls below T0. Otherwise, the first normally closed on-off valve 4A is always opened and the alarm 20 is always warned.
When the temperature of the water in the main water tank 8 reaches T1, the temperature sensor on the main water tank 8 immediately sends a relevant signal to the water pump 13 and makes the water pump operate for a certain period of time and then automatically stops, so that part of the hot water in the main water tank 8 flows into the hot water tank 12. When the water level of the main water tank 8 drops to H2 and the water temperature of the cold water tank 10 is lower than T2 due to the operation of the water outlet pump 13, the water level sensor of the main water tank 8 and the temperature sensor of the cold water tank 10 immediately transmit related signals to the water inlet pump 9, so that the water inlet pump 9 pumps the cooling water in the cold water tank 10 into the main water tank 8, and similarly, the water inlet pump 9 also automatically stops after working for a period of time.
When the water level in the cold water tank 10 drops below H1 and the water level in the hot water tank 12 rises above the water level H0, the water level sensors on the cold water tank 10 and the hot water tank 12 simultaneously transmit related signals to the intermediate pump 11, so that the intermediate timing operation is automatically stopped after a period of time. The hot water in the hot water tank 12 flows into the cold water tank 10 and then is automatically cooled naturally to wait for the next operation of the water inlet pump 9 to enter the next circulation. When the water level of the main water tank 8 drops to H2 due to the operation of the outlet pump 13 and the water temperature of the cold water tank 10 is higher than T2, the water level sensor on the main water tank 8 and the temperature sensor on the cold water tank 10 immediately transmit related signals to the second normally closed switch valve 4B and the third normally closed switch valve 4C and open them at regular time, so that the cooling water flows into the main water tank 8 through the second normally closed switch valve 4B while the hot water in the cold water tank 10 is discharged through the third normally closed switch valve 4C. The water inlet parallel connection head 16A and the water outlet parallel connection head 16B are used for connecting a plurality of phase change heat transfer units I in parallel on a water-cooling conveying unit II and simultaneously emitting heat of a plurality of server chips in the data center.
That is to say: under the condition that the heat dissipation double-channel system normally operates, only the main cooling cavity and the main phase change heat transfer element dissipate heat of the heat source unit, and the auxiliary cooling cavity, the auxiliary phase change heat transfer element, the normally closed switch valve and the safety valve do not work. Only when the main phase change heat transfer element fails or the main cooling cavity is blocked and the like, the heat dissipation cannot be realized to cause the temperature on the fixed plate to rise, the temperature sensor on the fixed plate transmits related signals to the alarm and the normally closed switch valve, and the normally closed switch valve starts to act to guide cooling water into the auxiliary cooling cavity, so that the auxiliary phase change heat transfer element and the auxiliary cooling cavity start to perform the heat dissipation effect. Therefore, the double-path water-cooling heat dissipation protection of the heating chip can be achieved.
The safety valve is used when the opposite water pipe is blocked and the flow velocity sensors at the two ends of the opposite water pipe transmit related signals to the safety valve. Similarly, the related signals are transmitted to the alarm to remind related staff to carry out maintenance work on the related staff timely. Because the two-channel system composition structure of the phase change heat transfer unit is similar, namely the heat dissipation effect of the two-channel system is similar, maintenance workers do not need to maintain the two-channel system at once, so that the maintenance workers can reasonably arrange maintenance time, and the maintenance workers can not influence the normal work of the whole heat dissipation system when performing maintenance work, thereby achieving the purposes of reducing maintenance cost and simultaneously not influencing the continuous operation of a data center.
As a further improvement of the technical scheme, a first four-way joint, a main pump, a filter and a main water tank in the water-cooling conveying unit are connected in series through water pipes. Similarly, the first four-way joint, the auxiliary pump, the filter and the main water tank are connected in series through a water pipe. Under the condition that the cooling system normally runs, the main pump mainly supplies water to the whole cooling system, only when the main pump goes wrong and stops running and a sensor on the main pump transmits a related signal to the auxiliary pump, the auxiliary pump starts to supply water to the system, and meanwhile, the alarm also can give an alarm to remind related workers of timely maintenance. Similarly, the maintenance personnel do not influence the normal water supply of the auxiliary pump when maintaining the main pump, thereby ensuring the uninterrupted operation of the data center. As a further improvement of the technical scheme, a safety valve in the water-cooling conveying unit connects the main water tanks together through a water pipe. When the water pipe on the opposite side is blocked, the safety valve starts to act when the flow velocity sensors at the two ends of the water pipe on the opposite side transmit related signals to the safety valve. Similarly, the related signals can be transmitted to the alarm to remind related staff of carrying out maintenance work on the alarm in due time. As a further improvement of the technical scheme, a water inlet pump, a cold water tank, an intermediate pump, a hot water tank and a water outlet pump in the water-cooling conveying unit are connected in series through water pipes. The main water tank is respectively connected with a water inlet pump and a water outlet pump through water pipes. The main water tank is connected with a normally closed switch valve to serve as a cooling water inlet, and the cold water tank is connected with a normally closed switch valve to serve as a hot water outlet. The main water tank is provided with a temperature sensor and is connected with the water outlet pump through an electric wire, and the water outlet pump is controlled to be opened at fixed time through the temperature sensor. The water inlet pump is connected with the water inlet pump through a wire, and the water inlet pump and the normally closed switch valve are controlled to be opened at regular time through the water level sensor of the main water tank and the temperature sensor of the water inlet tank. The water level sensor is arranged in the cold water tank, the water level sensor is arranged in the hot water tank, and the intermediate pump is controlled to be opened at regular time through the water level sensor of the cold water tank and the water level sensor of the hot water tank. Therefore, the heat dissipation effect of the heat dissipation system on the data center can not be influenced by the seasonal area environment. As a further improvement of the technical scheme, the parallel connection joint can connect a large number of phase change heat transfer units to the same water-cooling conveying unit, so that the power consumption is greatly reduced, and the operation cost of the heat dissipation system is saved.
As shown in fig. 3, the logic control flow chart of the present invention mainly includes 27 steps, which are respectively:
step A00: setting the angular speed of the main pump 15 as W0, setting the water flow speeds of two ends in the side water pipes of the safety valves 6A, 6B and 6C as V1, V2 and V3, respectively, setting the temperature of the fixed plate 1 as T0, setting the water level in the main water tank 8 as H2, setting the water temperature of the cold water tank 10 as T2, setting the water level of the hot water tank 12 as H0, setting the water level of the cold water tank 10 as H1 and setting the water temperature in the main water tank 8 as T1 on a related control system;
step B01: measuring the rotating speed through an angular speed sensor on the main pump 15 and judging whether the rotating speed of the main pump 15 is greater than W0 through a control system;
step B02: the related instructions output by the control system are kept unchanged, and the main pump 15 operates normally;
step B03: the control system outputs related instructions to start the auxiliary pump 7, and outputs related instructions to stop the main pump 15 and sound the alarm 20;
step C01: the safety valve 6A measures the water flow speed of the speed sensors at the two ends in the water pipe on the opposite side, and the control system judges whether the related water flow speed is less than V1;
step C02: the control system outputs relevant instructions to open the safety valve 6A and sound the alarm 20;
step C03: the related instruction output by the control system is kept unchanged, and the safety valve 6A is kept closed;
step D01: the safety valve 6B measures the water flow speed of the speed sensors at the two ends in the water pipe on the opposite side, and the control system judges whether the related water flow speed is less than V2;
step D02: the control system outputs relevant instructions to open the safety valve 6B and sound the alarm 20;
step D03: the related instruction output by the control system is kept unchanged, and the safety valve 6B is kept closed;
step E01: the safety valve 6C measures the water flow speed of the speed sensors at the two ends in the side water pipe, and the control system judges whether the related water flow speed is less than V3;
step E02: the control system outputs relevant instructions to open the safety valve 6C and sound the alarm 20;
step E03: the related instruction output by the control system is kept unchanged, and the safety valve 6C is kept closed;
step F01: measuring the temperature through a temperature sensor of the fixing plate 1 and judging whether the temperature of the fixing plate 1 is greater than T0 through a control system;
step F02: the control system outputs related instructions to open the normally closed switch valve 4A and sound the alarm 20;
step F03: the related instruction output by the control system keeps unchanged, and the normally closed switch valve 4A keeps closed;
step G01: detecting the water level by a water level sensor in the main water tank 8 and judging whether the water level is lower than H2 by a control system;
step G02: the related instructions output by the control system are kept unchanged, and the water inlet pump 9 is kept closed;
step G03: detecting the water temperature through a temperature sensor in the cold water tank 10 and judging whether the water temperature is lower than T2 through a control system;
step G04: the control system outputs related instructions to enable the water inlet pump 9 to work regularly so as to pump cooling water in the cold water tank 10 into the main water tank 8;
step G05: the control system outputs related instructions to stop the water inlet pump 9, and the normally closed switch valve 4B is opened at a certain time to introduce cooling water into the main water tank 8, and the normally closed switch valve 4C is also opened at a certain time to drain hot water in the cold water tank 10;
step H01: respectively detecting the water level heights by water level sensors in the hot water tank 12 and the cold water tank 10, and judging whether the water level in the hot water tank 12 is higher than H0 and the water level in the cold water tank 10 is lower than H1 by a control system;
step H02: the control system outputs related instructions to enable the intermediate pump 11 to work regularly so as to pump hot water in the hot water tank 12 into the cold water tank 10;
step H03: the related command output by the control system is kept unchanged, and the intermediate pump 11 is kept closed;
step I01: the water temperature is detected by a temperature sensor in the main water tank 8, and whether the water temperature is higher than T1 is judged by a control system;
step I02: the control system outputs related instructions to enable the water outlet pump 13 to work regularly so as to pump the hot water in the main water tank 8 into the hot water tank 12;
step I03: the relevant command output by the control system is kept unchanged, and the water outlet pump 13 is kept closed.
The logical relationship of the control method of the whole system is as follows: step a00 is performed first, and then step B01, step C01, step D01, step E01, step F01, step G01, step H01, and step I01 are performed simultaneously.
B: when step B01 is executed, it is determined by the control system whether the rotational speed of the main pump 15 is greater than W0. If so, go to step B02; otherwise, step B03 is performed.
C: when step C01 is executed, it is determined by the control system whether the water flow velocity in both ends of the side water pipe of the safety valve 6A is less than V1. If so, go to step C02; otherwise, step C03 is performed.
D: when the step D01 is executed, the control system determines whether the water flow speed in the two ends of the side water pipe of the safety valve 6B is less than V2. If so, go to step D02; otherwise, step D03 is performed.
E: when step E01 is executed, it is determined by the control system whether the water flow velocity in both ends of the side water pipe of the safety valve 6C is less than V3. If so, go to step E02; otherwise, step E03 is performed.
F: in step F01, it is determined by the control system whether the temperature of the fixing plate 1 is greater than T0. If so, go to step F02; otherwise, step F03 is performed.
G: when step G01 is executed, it is determined by the control system whether the water level in the main water tank 8 is lower than H2. If not, go to step G02; otherwise, step G03 is executed, that is, the control system determines whether the water temperature in the cold water tank 10 is lower than T2, if yes, step G04 is executed, otherwise, step G05 is executed.
H: in step H01, the control system determines whether the water level in the hot water tank 12 is higher than H0 and the water level in the cold water tank 10 is lower than H1. If so, go to step H02; otherwise, step H03 is performed.
I: when step I01 is executed, the control system determines whether the water temperature in the main water tank 8 is higher than T1. If so, performing step I02; otherwise, step I03 is performed.
Fig. 4(a) is a front view of the auxiliary phase change heat transfer element, and fig. 4(b) is an isometric view. Wherein the auxiliary phase change heat transfer element fixing part 021 is fixed on the heat source element 19 through the fixing plate 1, and the auxiliary phase change heat transfer element liquid cooling part 022 at the other end is arranged in the auxiliary cooling cavity 3. After the heat generated by the heat source 19 is transferred to the auxiliary phase change heat transfer element fixing part 021, the heat is rapidly transferred to the auxiliary phase change heat transfer element liquid cooling part 022 through the phase change of the working medium in the auxiliary phase change heat transfer element 2, and finally the heat is dissipated in the auxiliary cooling cavity 3.
Fig. 5(a) is a front view and fig. 5(b) is an isometric view of the main phase change heat transfer element. The fixing part 0181 of the main phase change heat transfer element is fixed on the heat source part 19 through the fixing plate 1, and the liquid cooling part 0182 of the main phase change heat transfer element at the other end is arranged in the main cooling cavity 17. After the heat generated by the heat source 19 is transferred to the fixing part 0181 of the main phase change heat transfer element, the heat is rapidly transferred to the liquid cooling part 0182 of the main phase change heat transfer element through the phase change of the working medium in the main phase change heat transfer element 18, and finally the heat is dissipated in the main cooling cavity 17.
Fig. 6(a) is an oblique top view of the main cooling chamber, and fig. 6(b) is an oblique bottom view of the main cooling chamber. The main phase change heat transfer element 18 inserts the main phase change heat transfer element liquid cooling part 0182 into the first liquid cooling cavity 0172, the second liquid cooling cavity diverging part 0178 and the second liquid cooling cavity 0177 through the phase change heat transfer element fixing groove 0171 respectively, and after cooling water flows in from the cooling cavity inlet 0174, the cooling water is divided into two parts through the second liquid cooling cavity diverging part 0178 and then enters the first liquid cooling cavity 0172 and the second liquid cooling cavity 0177 respectively. The two liquid cooling chambers are separated by a partition plate 0179, cooling water in the two chambers respectively flows out from different flow channels, and the cooling water in the first liquid cooling chamber 0172 flows into the first chamber outlet channel 01710 from the first chamber outlet 0173, then flows out from the first chamber outlet 0175, finally converges with the cooling water in the second liquid cooling chamber 0177 and flows out from the cooling chamber outlet 0176. The cooling water in the liquid cooling chamber 0177 is directly converged with the liquid cooling chamber 0172 and flows out from the outlet 0176 of the cooling chamber. The auxiliary cooling cavity 3 adopts the same structure as the main cooling cavity 17. The main cooling cavity 17 and the auxiliary cooling cavity 3 are of a laminated structure in the whole system, wherein the auxiliary cooling cavity 3 is arranged on the upper layer, and the main cooling cavity 17 is arranged on the lower layer.
Fig. 7 is a schematic three-dimensional structure of the main water tank 8, in which hot water flows into the main water tank 8 from the hot water inlet 083 or the hot water inlet 084, and when the water pump 13 is activated, the hot water flows through the hot water inlet chamber 082 and then flows into the water pump 13 from the hot water outlet 081. When the water outlet pump 13 is not in operation, hot water flows in and then passes through the elongated slot formed by the partition plate 0810 to increase the heat dissipation effect, then flows into the cold water outlet cavity 087, and finally flows out from the cold water upper outlet 085 or the cold water lower outlet 086. When the water inlet pump 9 is activated, cooling water flows from the cold water inlet 089 to the cold water outlet 087. When the normally closed on-off valve 4B is opened, the cooling water flows from the cold water-inlet port 088 into the cold water-outlet chamber 087. The internal structures of the hot water tank 12 and the cold water tank 10 are also close to the main water tank 8, and both have long grooves partitioned by partition boards.
Fig. 8(a) is a cross-sectional view of the four-way joint, and fig. 8(b) is an isometric view. The two inlets and the two outlets of the inner chamber 051 are communicated with each other. Under normal conditions, water flows into the inner cavity 051 from the main inlet 053 and then flows out from the main outlet 054. The auxiliary inlet 052 is only filled with water when the flow of water over the primary inlet 053 is blocked or otherwise malfunctions. Likewise, the auxiliary outlet 055 can only have water flow out when the water flow at the primary outlet 054 is blocked or otherwise fails.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A server water-cooling heat dissipation system with redundant phase change heat transfer elements is characterized by comprising at least one phase change heat transfer unit and a water-cooling conveying unit, wherein the at least one phase change heat transfer unit is connected with the water-cooling conveying unit through a parallel connection head;
the phase change heat transfer unit comprises a fixing plate, an auxiliary phase change heat transfer element, a main cooling cavity, an auxiliary cooling cavity and a water inlet parallel connector;
the main phase change heat transfer element is fixed on the heat source part through a fixing plate, and the main phase change heat transfer element, the main cooling cavity and the water inlet parallel connector are communicated in sequence;
the auxiliary phase change heat transfer element is fixed on the heat source part through a fixing plate, and the auxiliary phase change heat transfer element, the auxiliary cooling cavity and the water inlet parallel connector are sequentially communicated;
the water-cooling conveying unit comprises a first four-way joint, a main pump, an auxiliary pump, a filter, a water outlet union joint, a main water tank, a water inlet pump, a cold water tank, an intermediate pump, a hot water tank and a water outlet pump;
the first four-way joint, the main pump, the filter and the main water tank are communicated through a water pipe;
the first four-way joint, the auxiliary pump, the filter and the main water tank are communicated through a water pipe;
the water inlet pump, the cold water tank, the intermediate pump, the hot water tank and the water outlet pump are communicated through water pipes;
the main water tank is respectively communicated with the water inlet pump and the water outlet pump through water pipes.
2. The server water-cooling heat dissipation system of claim 1, wherein an inlet of the auxiliary cooling cavity is sequentially communicated with a first normally closed switch valve, a second four-way joint and a first safety valve through a water pipe, and the first safety valve is connected with a water inlet parallel connection joint;
the outlet of the auxiliary cooling cavity is sequentially communicated with a third four-way joint and a second safety valve through water pipes, and the second safety valve is communicated with the outlet parallel joint.
3. The server water-cooling heat dissipation system as recited in claim 1, wherein an outlet of the main cooling cavity is communicated with a second four-way joint, and the second four-way joint is connected with a water inlet parallel connection joint;
the inlet of the main cooling cavity is connected with a third four-way joint through a water pipe, and the third four-way joint is connected with a water outlet parallel connection joint.
4. The server water-cooling heat dissipation system as recited in claim 1, wherein the main water tank is connected to a second normally-closed switch valve as a cooling water outlet, and the cold water tank is connected to a third normally-closed switch valve as a hot water outlet.
5. The server water-cooling heat dissipation system according to claim 2, further comprising an alarm, wherein the alarm is connected with the fixing plate, the first normally closed switch valve, the first safety valve, the second safety valve, the third safety valve, the auxiliary pump and the main pump through electric wires.
6. The server water-cooling heat dissipation system as recited in claim 5, wherein the fixing plate is provided with a temperature sensor, the temperature sensor is connected with the first normally closed switch valve and controls the first normally closed switch valve to open and close;
a flow rate measuring sensor is arranged on a water pipe connected with the first safety valve, the second safety valve and the third safety valve, and the flow rate measuring sensor controls the first safety valve, the second safety valve and the third safety valve to be opened and closed;
the auxiliary pump is connected with the main pump through a speed sensor;
the main water tank is provided with a temperature sensor which is connected with the water outlet pump;
the main water tank is provided with a water level sensor which is connected with a water inlet pump;
the cold water tank is provided with a temperature sensor.
7. The method for controlling the water-cooling heat dissipation system of the server as claimed in claim 6, comprising the steps of:
firstly, respectively filling cooling water in a main water tank and a cold water tank, and connecting all sensors, all water pumps and related electric devices with a power supply, wherein the hot water tank is empty, secondly, when a main pump fails, a water pipe and a main cooling cavity are not blocked, the temperature of a fixing plate is below a set temperature T0, the water level in the main water tank is above H2 and the water temperature in the main water tank 8 is below T1, the main pump pumps the cooling water out of the main water tank, the cooling water firstly passes through a filter, then flows through a first four-way joint, a water inlet parallel joint and a second four-way joint and then enters the main cooling cavity;
the main phase-change heat transfer element transfers heat generated by the heat source part to the main cooling cavity, cooling water in the main cooling cavity takes away the heat, and the third four-way joint and the water outlet parallel joint of the cooled water mirror after temperature rise flow into the main water tank.
8. The control method of claim 7, wherein when the main pump is stopped due to a fault, the speed sensor sends a signal to the auxiliary pump, and the auxiliary pump continues to supply water to the system.
9. The control method according to claim 7, wherein when the temperature of the fixed plate rises to T0 due to a fault in the main phase change heat transfer element, the temperature sensor on the fixed plate immediately transmits a signal to the first normally closed switch valve and the alarm to allow the cooling water in the second four-way joint to flow into the auxiliary cooling chamber while warning the relevant staff;
at the moment, the auxiliary phase-change heat transfer element takes away heat generated by the heat source part in time through cooling water in the auxiliary cooling cavity, and heated hot water flows into the main water tank after flowing through the third four-way joint and the unblocked pipeline.
10. The control method of claim 7, wherein the first normally closed switch valve and the alarm are deactivated when the temperature of the fixed plate falls below T0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911250626.7A CN110996617B (en) | 2019-12-09 | 2019-12-09 | Server water cooling system with redundant phase change heat transfer element and control method |
| PCT/CN2020/122354 WO2021114878A1 (en) | 2019-12-09 | 2020-10-21 | Server water-cooling heat dissipation system having redundant phase change heat transfer element, and control method |
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| CN201911250626.7A CN110996617B (en) | 2019-12-09 | 2019-12-09 | Server water cooling system with redundant phase change heat transfer element and control method |
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Cited By (2)
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| CN112051911A (en) * | 2020-09-11 | 2020-12-08 | 山东工业职业学院 | Computer of circulative cooling |
| WO2021114878A1 (en) * | 2019-12-09 | 2021-06-17 | 华南理工大学 | Server water-cooling heat dissipation system having redundant phase change heat transfer element, and control method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118331405A (en) * | 2024-03-29 | 2024-07-12 | 广州市广能电气设备有限公司 | Microcomputer comprehensive monitoring protector and monitoring protecting method |
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| WO2021114878A1 (en) | 2021-06-17 |
| CN110996617B (en) | 2024-01-23 |
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