CN111615307B - Regulation and control method of split type high-precision liquid cooling source system based on standardization - Google Patents

Regulation and control method of split type high-precision liquid cooling source system based on standardization Download PDF

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CN111615307B
CN111615307B CN202010489605.7A CN202010489605A CN111615307B CN 111615307 B CN111615307 B CN 111615307B CN 202010489605 A CN202010489605 A CN 202010489605A CN 111615307 B CN111615307 B CN 111615307B
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liquid cooling
module
temperature
source module
cooling source
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CN111615307A (en
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杨文�
刘石神
吕慧峰
殷珍珍
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CHANGZHOU INSTITUTE OF OPTOELECTRONIC TECHNOLOGY
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CHANGZHOU INSTITUTE OF OPTOELECTRONIC TECHNOLOGY
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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
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20263—Heat dissipaters releasing heat from coolant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D15/00—Devices not covered by group F25D11/00 or F25D13/00, e.g. non-self-contained movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm devices
    • 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
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20281—Thermal management, e.g. liquid flow control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/04—Controlling heat transfer

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention discloses a regulation and control method of a split type high-precision liquid cooling source system based on standardization, wherein the liquid cooling source system comprises a primary liquid cooling source module, a secondary liquid cooling source module, a cooling circulating working medium and an external equipment module; the primary liquid cooling source module cools down the cooling circulation working medium in the secondary liquid cooling source module through the heat exchange device, the secondary liquid cooling source module regulates and controls the temperature for the external equipment module through the cooling circulation working medium, when the set temperature of the secondary liquid cooling source module is the required temperature of the external equipment module, in order to achieve that the temperature control precision of the external equipment module reaches the ideal requirement, the temperature control precision of the external equipment module is met by adjusting the set temperature of the primary liquid cooling source module, namely if the temperature control precision of the secondary liquid cooling source module exceeds the ideal value, the exceeded part can be compensated through resetting the temperature of the primary liquid cooling source module, and the requirement of adapting to various different external equipment modules can be achieved through the regulation and control method of the liquid cooling source system.

Description

Regulation and control method of split type high-precision liquid cooling source system based on standardization
Technical Field
The invention belongs to the field of aerospace liquid cold sources, and particularly relates to a regulation and control method of a split type high-precision liquid cold source system based on standardization.
Background
The liquid cooling source is a device which is commonly used for providing a certain temperature, pressure and flow cooling working medium for equipment adopting a liquid cooling mode, has high cooling efficiency and relatively simple technology, is widely applied, occupies a large proportion in cooling aerospace supporting equipment, and particularly needs the cooling working medium to cool the equipment for thermal control equipment in each test unit, module and system, such as equipment cabinets, high-power electronic devices and the like. At present, liquid cooling sources on the market are mainly classified into three types: (1) liquid cooling sources for laser welding, material forming, mechanical cutting and the like; (2) cooling liquid sources for cooling a CPU (central processing unit) and a display card, a memory and a hard disk of a PC (personal computer) in the DIY market; the liquid cooling source is used for mounting the three telecommunication racks. Although the working principle of the products is similar, the use conditions, the cooling capacity, the electrical control and the mechanical structure of the products are greatly different, and the products are only suitable for specific occasions and cannot be used universally.
Due to the particularity of the aerospace corollary equipment: (1) the variety is various, the factors such as environmental conditions, mechanical structures and the like are different along with different application requirements of equipment, when liquid cold sources are configured for the equipment, the mechanical interface, the electrical interface and the pipeline interface are required to be redesigned and produced in a customized manner, the design and manufacturing period is long, and the cost is high; (2) the requirement on working media of access equipment is harsh, the components of the working media cannot be changed in the using process of any working media accessed into the aerospace matching equipment, and all raw materials in contact with the working media meet the requirements on compatibility and cleanliness. And the relevant indexes of the liquid cooling source in the market are difficult to meet the relevant requirements, so that the products connected with the aerospace matching equipment need to be strictly controlled. In order to realize the large-scale popularization and application of the liquid cooling source in the aerospace corollary equipment, the development of a general liquid cooling source system is urgent.
In the prior art, a single liquid cooling source device is generally directly used for temperature regulation, and the single liquid cooling source device is used for regulating and controlling the target temperature of the external device.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a regulation and control method of a split type high-precision liquid cooling source system based on standardization aiming at the defects of the prior art.
The technical scheme for realizing the invention is as follows:
the invention relates to a regulation and control method of a split type high-precision liquid cold source system based on standardization, which comprises the following steps:
step one, a secondary liquid cooling source module for regulating and controlling temperature is configured for an external equipment module, a primary liquid cooling source module is configured for a cooling circulation working medium of the secondary liquid cooling source module, the primary liquid cooling source module cools the cooling circulation working medium of the secondary liquid cooling source module, the set temperature of the secondary liquid cooling source module is set as the target temperature of the external equipment module according to the target temperature of the external equipment module, and the set temperature of the primary liquid cooling source module is lower than the set temperature of the secondary liquid cooling source module;
after the primary liquid cold source module, the secondary liquid cold source module and the external equipment module run stably, reading the liquid supply temperature of the cooling circulating working medium of the secondary liquid cold source module, and judging whether the liquid supply temperature meets the temperature control precision requirement of the external equipment module or not by comparing the liquid supply temperature with the target temperature of the external equipment module;
step three, according to the comparison result in the step two, if the liquid supply temperature does not meet the temperature control precision requirement of the external equipment module, the set temperature of the primary liquid cold source module is adjusted, so that the liquid supply temperature of the cooling circulating working medium read by the secondary liquid cold source module finally meets the temperature control precision requirement of the external equipment module;
and step four, obtaining the proper set temperature of the primary liquid cooling source module and the secondary liquid cooling source module according to the regulation result in the step three, and at the moment, realizing the regulation and control of the target temperature of the external equipment module through the combined regulation and control of the primary liquid cooling source module and the secondary liquid cooling source module.
According to a further preferred technical solution of the present invention, in the step one, the target temperature T of the external device module is determined according to the target temperature T of the external device module0Setting the temperature of the secondary liquid cooling module to T0The set temperature of the first-stage liquid cold source module is lower than the set temperature of the second-stage liquid cold source module, and is set to be T1Initially setting Δ T as T0-T1＝3。
Further, in the second step, after the initial temperatures of the primary liquid cooling source module and the secondary liquid cooling source module are set, the primary liquid cooling source module, the secondary liquid cooling source module and the external device module start to work until the primary liquid cooling source module and the secondary liquid supply module are reachedWhen the temperature of the cold source module reaches the stable temperature, the temperature of the primary liquid cooling source module is measured to be T1The temperature of the secondary liquid cooling module is T2To obtain the temperature T of the secondary liquid cooling module2Target temperature T with external device module0Temperature error of T0-T2Judging the temperature error T according to the temperature control precision requirement of the target temperature of the external equipment module0-T2And whether the precision meets the requirements or not, and further judging whether the temperature of the secondary liquid cooling source module meets the corresponding requirements or not.
Further, in the third step, according to the comparison result in the second step, if the temperature of the secondary liquid cold source module does not meet the corresponding requirement, the temperature value T of the primary liquid cold source module is used1Reset to T3At this moment, the temperature value after the secondary liquid cooling module is stabilized is T4Repeating the comparison method in the second step to obtain a result until the nth time, wherein the temperature error is T0-T2nThe temperature control precision requirement of the target temperature of the external equipment module is met, wherein after the nth regulation, T2nIs the temperature value T after the secondary liquid cooling module is stabilized2n-1And the temperature value is the optimum temperature value after the primary liquid cooling source module is adjusted.
Further, in the fourth step, the temperature difference value between the first-stage liquid cooling source module and the second-stage liquid cooling source module is T according to the regulation and control result in the third step0-T2n-1And at the moment, the target temperature of the external equipment module is regulated and controlled by the combination regulation and control of the primary liquid cooling source module and the secondary liquid cooling source module.
Preferably, the primary liquid cooling source module adopts a single liquid cooling source device to provide cooling circulating working media for the secondary liquid cooling source module, and the secondary liquid cooling source module is a universal liquid cooling source and provides constant cooling circulating working media with constant temperature, pressure and flow for the external device module.
Preferably, a heat exchange water tank is arranged between the primary liquid cooling source module and the secondary liquid cooling source module, the heat exchange water tank comprises an upper water tank and a lower water tank, the upper water tank circularly conveys cooling circulating working media in the secondary liquid cooling source module, and the lower water tank circularly conveys cooling circulating working media in the primary liquid cooling source module.
Preferably, the cooling circulation working medium in the primary liquid cold source module is conveyed into a lower water tank of the heat exchange water tank, heat exchange is carried out on the upper layer of the heat exchange water tank, the cooling circulation working medium in the secondary liquid cold source module in the upper water tank of the heat exchange water tank is cooled, the cooled cooling circulation working medium is heated to a set temperature through a heating module in the secondary liquid cold source, the cooling circulation working medium enters the external equipment module through a conveying pipeline, and the cooling circulation working medium conveyed out of the external equipment module circularly enters an upper water tank of the heat exchange water tank to carry out heat exchange; the upper layer and the lower layer of the heat exchange water tank completely separate the cooling circulation working medium of the first-stage liquid cooling source module and the cooling circulation working medium of the second-stage liquid cooling source module from each other, only the cooling circulation working medium of the second-stage liquid cooling source module is contacted with the external equipment module, all raw materials contacted with the cooling circulation working medium of the second-stage liquid cooling source module meet the compatibility requirement, because important materials in a single liquid cooling source device form a copper pipe, and important materials of the external equipment module form an aluminum material, only the cooling circulation working medium of the second-stage liquid cooling source module is contacted with the external equipment module, the phenomenon that the electrochemical corrosion is caused by the mixed use of copper and aluminum to introduce pollutants into the.
Preferably, the cooling cycle working medium is ethylene glycol aqueous solution, and the primary liquid cooling source module, the secondary liquid cooling source module and the external equipment module are connected through hose pipelines.
By utilizing the technical scheme, the invention has the following beneficial effects:
(1) in the regulation and control method, the primary liquid cooling source module cools and cools the cooling circulating working medium in the secondary liquid cooling source module through the heat exchange device, the secondary liquid cooling source module regulates and controls the temperature of the external equipment module through the cooling circulating working medium, aiming at different requirements of different loads of the external equipment module, when the set temperature of the secondary liquid cooling source module is the temperature required by the external equipment module, in order to realize that the temperature control precision in the secondary liquid cooling source module reaches the ideal requirement, the regulation and control method is realized by adjusting the set temperature of the primary liquid cooling source module, namely if the temperature control precision of the secondary liquid cooling source module exceeds the ideal value of the external equipment module, the temperature of the primary liquid cooling source module can be reset to compensate the exceeded part so as to reach the ideal temperature control precision of the external equipment module, so that the regulation and control method can realize the requirement of adapting to various, the purpose of controlling the temperature precision of the cooling circulating working medium in the liquid cold source system can be realized.
(2) According to the invention, the heat exchange water tank arranged between the primary liquid cooling source module and the secondary liquid cooling source module is divided into an upper layer and a lower layer, and cooling circulating working media in the primary liquid cooling source module and the secondary liquid cooling source module are separated from each other, so that the layered heat exchange water tank can ensure that the primary liquid cooling source module can take away heat of an external equipment module flowing through the secondary liquid cooling source module, the primary liquid cooling source module reaches a set temperature, the cooling circulating working media circulating in the secondary liquid cooling source module can be prevented from being overcooled, the problem that the secondary liquid cooling source module cannot reach the target temperature of the external equipment is prevented, and the liquid supply temperature of the cooling circulating working media of the secondary liquid cooling source module reaches the target temperature of.
(3) According to the regulation and control method, the secondary liquid cooling source module is configured for the external equipment module matched with the space aviation, the primary liquid cooling source module is configured for the secondary liquid cooling source module, the target temperature of the external equipment module is achieved by integrally matching regulation and control through setting the temperature difference between the primary liquid cooling source module and the secondary liquid cooling source module, the regulation and control method has high temperature control precision, can shorten the development period and reduce the production cost, and is easy to realize the production requirements of standardization, universalization and combination.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a block diagram of the structure of the regulation method of the present invention.
FIG. 2 is a block diagram of a secondary liquid cooling module according to an embodiment;
fig. 3 is a block diagram of an upper computer in the secondary liquid cooling source module in the embodiment.
In the figure, 1-a primary liquid cold source module, 2-an external equipment module, 3-a heat exchange water tank, 4-a temperature control water tank, 41-a heating plate, 42-a relay, 43-a temperature controller, 5-a diaphragm pump, 6-a buffer tank, 7-a first pressure sensor, 8-a temperature sensor, 9-a filter, 10-a second pressure sensor, 11-a flow meter and 12-an upper computer.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a regulation and control method of a split type high-precision liquid cooling source system based on standardization comprises the following steps:
step one, a secondary liquid cooling source module for regulating and controlling temperature is configured for an external equipment module, a primary liquid cooling source module is configured for a cooling circulating working medium of the secondary liquid cooling source module, the primary liquid cooling source module cools the cooling circulating working medium of the secondary liquid cooling source module, and the target temperature T of the external equipment module is determined according to the target temperature T of the external equipment module0Setting the temperature of the secondary liquid cooling module to T0The set temperature of the first-stage liquid cold source module is lower than the set temperature of the second-stage liquid cold source module, and is set to be T1Initially setting Δ T as T0-T1＝3；
Step two, after the initial temperatures of the primary liquid cold source module and the secondary liquid cold source module are set, the primary liquid cold source module, the secondary liquid cold source module and the external equipment module start to work, and when the temperatures of the primary liquid cold source module and the secondary liquid cold source module reach stable values, the temperature of the primary liquid cold source module is measured to be T1The temperature of the secondary liquid cooling module is T2To obtain the temperature T of the secondary liquid cooling module2Target temperature T with external device module0Temperature error of T0-T2Judging the temperature error T according to the temperature control precision requirement of the target temperature of the external equipment module0-T2Whether the precision meets the requirements or not, and further judging whether the temperature of the secondary liquid cooling source module meets the corresponding requirements or not;
step three, according to the comparison result in the step two, if the temperature of the secondary liquid cold source moduleIf the temperature value T of the primary liquid cooling source module does not meet the corresponding requirement, the temperature value T of the primary liquid cooling source module is used1Reset to T3At this moment, the temperature value after the secondary liquid cooling module is stabilized is T4Repeating the comparison method in the second step to obtain a result until the nth time, wherein the temperature error is T0-T2nThe temperature control precision requirement of the target temperature of the external equipment module is met, wherein after the nth regulation, T2nIs the temperature value T after the secondary liquid cooling module is stabilized2n-1The optimal temperature value is adjusted by the primary liquid cooling source module;
step four, obtaining the proper temperature difference value T of the primary liquid cooling source module and the secondary liquid cooling source module according to the regulation result in the step three0-T2n-1And at the moment, the target temperature of the external equipment module is regulated and controlled by the combination regulation and control of the primary liquid cooling source module and the secondary liquid cooling source module.
In the regulation and control method, the related primary liquid cooling source module adopts single liquid cooling source equipment to provide cooling circulating working media for the secondary liquid cooling source module, the secondary liquid cooling source module is a universal liquid cooling source and provides constant temperature, pressure and flow cooling circulating working media for the external equipment module, and the primary liquid cooling source module, the secondary liquid cooling source module and the external equipment module are connected through hose pipelines.
The primary liquid cooling module is communicated with the secondary liquid cooling module through a heat exchange water tank, and the secondary liquid cooling module comprises a cooling circulating working medium, a temperature control module, a conveying module, a backflow module and a heat exchange water tank; the intercommunication is provided with accuse temperature module and transport module on the circulation pipeline of cooling cycle working medium, transport module carries the cooling cycle working medium after will accuse temperature to supply liquid mouth interface, the cooling cycle working medium gets into external equipment module 2 through supplying liquid mouth interface, flow out through returning liquid mouth interface behind external equipment module 2, the cooling cycle working medium flows back to the backward flow module through returning liquid mouth interface, backward flow module and heat exchange water tank intercommunication, heat exchange water tank and accuse temperature module intercommunication, one-level liquid cold source module 1 is through the cooling cycle working medium cooling of heat exchange water tank in to second grade liquid cooling source module.
In this embodiment, the cooling circulating working medium in the cooling secondary liquid cooling module preferably adopts a glycol aqueous solution, as shown in fig. 2, the temperature control module includes a temperature control water tank 4, a heating device and a temperature controller 43, the conveying module includes a diaphragm pump 5, a buffer tank 6, a first pressure sensor 7, a temperature sensor 8 and a filter 9, the reflux module includes a second pressure sensor 10 and a flow meter 11, and the heat exchange water tank 3 includes two layers of heat exchange water tanks; wherein the temperature control water tank 4, the diaphragm pump 5, the buffer tank 6, the first pressure sensor 7, the temperature sensor 8 and the filter 9 are sequentially communicated through a hose, a liquid supply port interface is arranged at the tail end of the filter, a cooling circulation working medium in the secondary liquid cooling source module is communicated with the external equipment module 2 through the liquid supply port interface and flows back to the liquid return port interface through the external equipment module 2, the second pressure sensor 10 and the flowmeter 11 are sequentially communicated through the hose between the liquid return port interface and the heat exchange water tank, the heat exchange water tank 3 is communicated with the temperature control water tank 4 through the hose, the heat exchange water tank 3 is provided with two layers, the cooling circulation working medium in the cooling secondary liquid cooling source module of the secondary liquid cooling source module sequentially circularly flows through the temperature control water tank 4, the diaphragm pump 5, the buffer tank 6, the first pressure sensor 7, the temperature sensor 8, the filter 9, The external equipment module 2, the second pressure sensor 10 and the flowmeter 11 finally flow back to the upper layer of the heat exchange water tank 3 and then continue to circulate; a heating device is installed on the temperature control water tank, the heating device preferably adopts a heating sheet 41, a temperature controller 43 is electrically connected with the heating sheet 41, the temperature controller 43 adjusts the temperature of the temperature control water tank 4 by controlling the opening and closing of the heating sheet 41, in order to safely protect the heating sheet 41, a relay 42 is arranged on a connecting circuit between the temperature controller 43 and the heating sheet, a temperature sensor 8 can measure the liquid supply temperature of a cooling circulation working medium in a cooling secondary liquid cooling source module of the secondary liquid cooling source module in real time, the measured liquid supply temperature of the cooling circulation working medium in the secondary liquid cooling source module is fed back to the temperature controller 43 through the temperature sensor 8, and the temperature controller 43 controls the opening and closing of the heating sheet 41 according to the liquid supply temperature so as to; the buffer tank 6 is arranged behind the flowing direction of the cooling cycle working medium in the diaphragm pump 5 in the conveying module, namely the buffer tank 6 is arranged at the outlet of the diaphragm pump 5 and is used for buffering the pulsation of the diaphragm pump, the buffer tank 6 maintains the stability of the pressure and the flow of the cooling cycle working medium in the secondary liquid cooling source module, the vibration of a circulating pipeline is eliminated, downstream instruments and equipment of the diaphragm pump 5 are protected, the diaphragm pump 5 is used for conveying the cooling cycle working medium in the secondary liquid cooling source module for an external equipment module, the diaphragm pump 5 preferably adopts a KNF company NF300 KTDC 24V diaphragm pump, the maximum output flow of the diaphragm pump is 3L/min, the suction lift is 3m and the lift is 10m, the actual output flow of the diaphragm pump can be adjusted by setting a PWM duty ratio to drive a diaphragm pump speed regulator for liquid cooling, and the linear adjustment can be carried out, the heat consumption of the cooling circulating working medium in the secondary liquid cooling module under different working conditions is matched; the diaphragm pump 5 can convey corrosive liquid, has good compatibility with a cooling circulating working medium in the secondary liquid cooling source module, and the flow of the cooling circulating working medium can be adjusted and maintained within a required range; in order to enable the cooling circulating working medium in the conveyed secondary liquid cold source module to meet the requirement of cleanliness, the filter 11 preferably adopts a filter with the filtering precision of 5 um; the flowmeter 11 on the backflow module adopts a corrosion-resistant glass float flowmeter for monitoring the flow of the cooling circulating working medium in the secondary liquid cooling source module, and has the advantages of reliable performance, simple use and convenient reading.
The material of the heat exchange water tank 3 of the secondary liquid cooling source module is 2A12 aluminum alloy, a brazed water cooling plate type heat exchange structure is adopted, the structure is divided into an upper layer and a lower layer, the upper layer of the heat exchange water tank 3 is used for circulation of cooling circulation working media in the secondary liquid cooling source module, the cooling circulation working media in the secondary liquid cooling source module is used for being conveyed to the external equipment module 2, the primary liquid cooling source module 1 adopts single liquid cooling source equipment, the cooling circulation working media in the primary liquid cooling source module 1 is ethylene glycol water solution, the cooling circulation working media in the primary liquid cooling source module is conveyed to the lower layer of the heat exchange water tank 3, the cooling circulation working media in the secondary liquid cooling source module on the upper layer of the heat exchange water tank 3 are conveyed to the upper layer of the heat exchange water source module through the cooling circulation working media in the primary liquid cooling source module on the lower layer of the heat exchange water tank 3, and the cooling circulation working media in the secondary liquid cooling source module are Cooling, the heat exchange water tank 3 separates the cooling circulation working medium in the secondary liquid cooling source module and the cooling circulation working medium in the primary liquid cooling source module, only the cooling circulation working medium in the upper secondary liquid cooling source module of the heat exchange water tank 3 contacts with the external equipment module, thereby realizing the compatibility requirement, the cooling temperature of the cooling circulating working medium in the primary liquid cold source module can be set through the liquid cooling equipment module 1, the temperature of the cooling circulating working medium in the secondary liquid cooling source module can be better adjusted, the heat of the cooling circulating working medium in the secondary liquid cooling source module flowing through the external equipment module is taken away by the cooling circulating working medium in the primary liquid cooling source module through the heat exchange water tank, the primary liquid cold source module reaches the set temperature, and the cooling circulating working medium in the secondary liquid cold source module is not overcooled, so that the liquid supply temperature of the cooling circulating working medium in the secondary liquid cold source module cannot reach the temperature required by the external equipment module; the upper layer and the lower layer of the heat exchange water tank 3 can separate the cooling circulation working medium in the secondary liquid cooling module from the cooling circulation working medium in the primary liquid cooling module, only the cooling circulation working medium in the secondary liquid cooling module on the upper layer of the heat exchange water tank 3 is contacted with the external equipment module 2, thereby realizing compatibility, because the conventional single liquid cold source equipment adopts a single-stage compressor for refrigeration, wherein the circulation pipeline of the cooling circulation working medium in the primary liquid cooling source module is communicated by a copper pipe, the communication pipeline of the cooling circulation working medium in the secondary liquid cooling source module is connected by a hose, and the main material of the external equipment module is an aluminum material, because the heat exchange water tank completely separates the heat exchange of the cooling circulating working medium in the secondary liquid cooling source module and the cooling circulating working medium in the primary liquid cooling source module, can effectively avoid the introduction of pollutants to an external equipment module due to electrochemical corrosion generated during the mixed use of copper and aluminum.
As shown in fig. 3, the secondary liquid cooling module in this embodiment further includes an upper computer 12 and an alarm module, the upper computer 12 communicates with the temperature controller 43, the diaphragm pump speed regulator, the first pressure sensor 7 and the second pressure sensor 10 via a communication module, the communication module can preferentially adopt an RS485 communication module, and the working process of the upper computer is as follows: after the equipment in the embodiment is powered on, firstly, the upper computer is started to ensure that RS485 communication among the temperature controller 2, the diaphragm pump speed regulator, the first pressure sensor 7, the second pressure sensor 10 and the upper computer is normal, secondly, the temperature controller 43 is set with corresponding temperature according to the temperature required by external equipment, a certain duty ratio is set for the diaphragm pump speed regulator according to the flow required by cooling circulating working medium in the secondary liquid cooling source module, at the moment, the diaphragm pump 5 is started, the whole device starts to work, meanwhile, the temperature sensor 8 detects the liquid supply temperature of the cooling circulating working medium in the secondary liquid cooling source module, if the liquid supply temperature is lower than the set temperature of the temperature controller, the heating plate 41 is placed in a heating mode, and the temperature of the cooling circulating working medium in the secondary; when the temperature of the cooling circulating working medium in the secondary liquid cooling source module rises to a set temperature, the temperature controller 43 closes the heating sheet 41 and stops heating the cooling circulating working medium in the secondary liquid cooling source module; the upper computer 12 monitors the pressure and the pressure difference of the cooling circulating working medium in the secondary liquid cooling source module in real time through data signals transmitted by the first pressure sensor 7 and the second pressure sensor 10, when the temperature, the pressure and the pressure difference of the cooling circulating working medium in the secondary liquid cooling source module are higher than the pre-warning value set by the upper computer 12, the upper computer 12 gives an alarm through the alarm module and displays corresponding fault information, the alarm module comprises a loudspeaker alarm and an indicator lamp alarm, and the loudspeaker alarm and the indicator lamp alarm can arouse the attention of a supervisor from the aspects of hearing and vision, so that the fault information can be rapidly checked; the temperature, the pressure and the pressure difference of the cooling circulation working medium in the secondary liquid cooling source module are monitored in real time through the upper computer 12, the operation safety of equipment is guaranteed in real time, the upper computer 12 controls the temperature of the cooling circulation working medium in the secondary liquid cooling source module through the temperature sensor and the heating plate 41, the upper computer 12 can also monitor the inlet and outlet pressure and the temperature of the cooling circulation working medium at the outlet of the cooling circulation working medium in the secondary liquid cooling source module in real time, the upper computer 12 sets different duty ratios for the diaphragm pump speed regulator to adjust the internal flow of the secondary liquid cooling source module, the flow resistance characteristic of the secondary liquid cooling source module is linearly adjusted, and the heat consumption is matched with the heat consumption of the secondary liquid cooling source module under different working conditions. The upper computer is provided with the intensive protection functions of heat overload protection of the replacement hot water tank and the temperature control water tank, water hammer pumping phenomenon protection and the like, so that the safety and reliability of the whole equipment are improved.
The secondary liquid cooling source module in this embodiment can adjust external device module target temperature to different external device different load requirements, when the temperature controller set temperature is the required temperature of external device module, in order to make the temperature control precision of temperature controller reach the ideal requirement, can realize through the set temperature of adjusting the primary liquid cooling source module, if temperature controller temperature control precision surpasses the ideal value, can compensate the part that surpasses through the set temperature of resetting the primary liquid cooling source module, thereby reach the ideal temperature control precision requirement of external device module, use through the cooperation of temperature controller and primary liquid cooling source module in the whole secondary liquid cooling source module, realize the requirement that adapts to different external device loads.
According to the regulation and control method in the embodiment, the secondary liquid cooling source module is configured for the external equipment module matched with the space aviation, the primary liquid cooling source module is configured for the secondary liquid cooling source module, the target temperature of the external equipment module is achieved by integrally matching regulation and control by setting the temperature difference between the primary liquid cooling source module and the secondary liquid cooling source module, the regulation and control method has high temperature control precision, can shorten the development period, reduce the production cost, and is easy to realize the production requirements of standardization, universalization and combination; in the regulation and control method of the embodiment, the primary liquid cooling source module cools and cools the cooling circulation working medium in the secondary liquid cooling source module through the heat exchange water tank, the secondary liquid cooling source module regulates and controls the temperature of the external equipment module through the cooling circulation working medium, aiming at different requirements of loads of different external equipment modules, when the set temperature of the secondary liquid cooling source module is the temperature required by the external equipment module, in order to realize that the temperature control precision in the secondary liquid cooling source module reaches an ideal requirement, the regulation and control method is realized by adjusting the set temperature of the primary liquid cooling source module, namely if the temperature control precision of the secondary liquid cooling source module exceeds the ideal value of the external equipment module, the temperature of the primary liquid cooling source module can be reset to compensate the exceeded part, thereby reaching the ideal temperature control precision of the external equipment module, so that the regulation and control method of the embodiment can be, the purpose of controlling the temperature precision of the cooling circulating working medium in the liquid cold source system can be realized.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A regulation and control method of a split type high-precision liquid cooling source system based on standardization is characterized by comprising the following steps:
step one, a secondary liquid cooling source module for regulating and controlling temperature is configured for an external equipment module, a primary liquid cooling source module is configured for a cooling circulation working medium of the secondary liquid cooling source module, the primary liquid cooling source module cools the cooling circulation working medium of the secondary liquid cooling source module, the set temperature of the secondary liquid cooling source module is set as the target temperature of the external equipment module according to the target temperature of the external equipment module, and the set temperature of the primary liquid cooling source module is lower than the set temperature of the secondary liquid cooling source module;
after the primary liquid cold source module, the secondary liquid cold source module and the external equipment module run stably, reading the liquid supply temperature of the cooling circulating working medium of the secondary liquid cold source module, and judging whether the liquid supply temperature meets the temperature control precision requirement of the external equipment module or not by comparing the liquid supply temperature with the target temperature of the external equipment module;
step three, according to the comparison result in the step two, if the liquid supply temperature does not meet the temperature control precision requirement of the external equipment module, the set temperature of the primary liquid cold source module is adjusted, so that the liquid supply temperature of the cooling circulating working medium read by the secondary liquid cold source module finally meets the temperature control precision requirement of the external equipment module;
and step four, obtaining the proper set temperature of the primary liquid cooling source module and the secondary liquid cooling source module according to the regulation result in the step three, and at the moment, realizing the regulation and control of the target temperature of the external equipment module through the combined regulation and control of the primary liquid cooling source module and the secondary liquid cooling source module.
2. The method according to claim 1, wherein the step one comprisesAccording to the target temperature T of the external equipment module0Setting the temperature of the secondary liquid cooling module to T0The set temperature of the first-stage liquid cold source module is lower than the set temperature of the second-stage liquid cold source module, and is set to be T1Initially setting Δ T as T0-T1＝3。
3. The method according to claim 2, wherein in the second step, after the initial temperatures of the primary liquid cooling module and the secondary liquid cooling module are set, the primary liquid cooling module, the secondary liquid cooling module and the external device module start to operate, and when the temperatures of the primary liquid cooling module and the secondary liquid cooling module reach a stable state, the measured temperature of the primary liquid cooling module is T1The temperature of the secondary liquid cooling module is T2To obtain the temperature T of the secondary liquid cooling module2Target temperature T with external device module0Temperature error of T0-T2Judging the temperature error T according to the temperature control precision requirement of the target temperature of the external equipment module0-T2And whether the precision meets the requirements or not, and further judging whether the temperature of the secondary liquid cooling source module meets the corresponding requirements or not.
4. The method according to claim 3, wherein in the third step, if the temperature of the secondary liquid cooling source module does not meet the corresponding requirement according to the comparison result in the second step, the temperature value T of the primary liquid cooling source module is determined1Reset to T3At this moment, the temperature value after the secondary liquid cooling module is stabilized is T4Repeating the comparison method in the second step to obtain a result until the nth time, wherein the temperature error is T0-T2nThe temperature control precision requirement of the target temperature of the external equipment module is met, wherein after the nth regulation, T2nIs the temperature value T after the secondary liquid cooling module is stabilized2n-1And the temperature value is the optimum temperature value after the primary liquid cooling source module is adjusted.
5. The method for regulating and controlling of claim 4, wherein in step four, according to stepThe regulation and control result in the third step obtains that the proper temperature difference value of the primary liquid cooling source module and the secondary liquid cooling source module is T0-T2n-1And at the moment, the target temperature of the external equipment module is regulated and controlled by the combination regulation and control of the primary liquid cooling source module and the secondary liquid cooling source module.
6. The regulation and control method according to claim 1, wherein the primary liquid cooling source module adopts a single liquid cooling source device, the cooling circulation working medium of the primary liquid cooling source module is cooled by the heat exchange device and the cooling circulation working medium of the secondary liquid cooling source module, and the secondary liquid cooling source module is a universal liquid cooling source and provides constant temperature, pressure and flow cooling circulation working medium for the external device module.
7. The regulation and control method according to claim 6, wherein a heat exchange water tank is arranged between the primary liquid cooling source module and the secondary liquid cooling source module, the heat exchange water tank comprises an upper water tank and a lower water tank, the upper water tank circularly conveys the cooling circulating working medium in the secondary liquid cooling source module, and the lower water tank circularly conveys the cooling circulating working medium in the primary liquid cooling source module.
8. The regulation and control method according to claim 7, wherein the cooling circulation working medium in the primary liquid cooling source module is delivered to a lower water tank of the heat exchange water tank, heat exchange is performed on an upper layer of the heat exchange water tank, the cooling circulation working medium in the secondary liquid cooling source module located in the upper water tank of the heat exchange water tank is cooled, the cooled cooling circulation working medium is heated to a set temperature by a heating module in the secondary liquid cooling source, the cooling circulation working medium enters the external equipment module through a delivery pipe, and the cooling circulation working medium delivered from the external equipment module circulates to an upper water tank of the heat exchange water tank for heat exchange.
9. The method as claimed in claim 1, wherein the cooling cycle fluid is an ethylene glycol aqueous solution, and the primary liquid cooling module, the secondary liquid cooling module and the external device module are connected by hose lines.
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