CN110513947A - A kind of liquid level controlling method for water cooling system surge tank - Google Patents
A kind of liquid level controlling method for water cooling system surge tank Download PDFInfo
- Publication number
- CN110513947A CN110513947A CN201910812147.3A CN201910812147A CN110513947A CN 110513947 A CN110513947 A CN 110513947A CN 201910812147 A CN201910812147 A CN 201910812147A CN 110513947 A CN110513947 A CN 110513947A
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- China
- Prior art keywords
- surge tank
- cooling system
- liquid level
- water cooling
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
Abstract
The present invention relates to a kind of liquid level controlling methods for water cooling system surge tank, comprising the following steps: S1: determining the total volume capacity of water cooling system；S2: the minimum temperature and maximum temperature of coolant liquid in water cooling system are determined；S3: volume change of the coolant liquid in minimum temperature and maximum temperature in water cooling system is calculated；S4: determining the diameter of surge tank, and calculates coolant liquid corresponding liquid level in surge tank in minimum temperature and maximum temperature；S5: the height of surge tank is determined；S6: the theoretical liquid level of surge tank under arbitrary height is determined；S7: the temperature of coolant liquid and the actual liquid level in surge tank in real-time monitoring water cooling system, and supplemented in time, keep actual liquid level equal with theoretical liquid level.Coolant liquid is added in Liquid level the present invention by the volume change factor that temperature change generates, to increase the accuracy of buffer tank's liquid level control, reduces the occupied space of entire water-cooling system.
Description
Technical field
The invention belongs to the cooling technical fields of water, and in particular to a kind of Liquid level side for water cooling system surge tank
Method.
Background technique
Currently, the type of cooling of large power power electronic appliance, based on water cooling, usual water cooling system is closed
The circulatory system, coolant liquid can expand with heat and contract with cold because of the variation of temperature, need to configure surge tank in systems cold to buffer
But liquid expand with heat and contract with cold caused by volume change, in addition surge tank can also maintain that whole system pressure is constant and medium is full of.
So surge tank is essential capital equipment in water-cooling system.
But the buffer tank's liquid level control in water cooling system is to start liquid level definite value (constant) by a moisturizing at present
Stop liquid level definite value (constant) Lai Shixian with moisturizing, as long as surge tank liquid level starts liquid level definite value, small pump lower than moisturizing
Start the moisturizing into system, stops liquid level until liquid level reaches moisturizing, this control mode does not account for temperature to coolant liquid
Influence, if minimum temperature by liquid level mend to moisturizing stop liquid level, when temperature is raised to maximum temperature, the liquid level of surge tank
It can steeply rise.In order to meet the expansion requirements of coolant liquid under this operating condition, the volume of surge tank needs to design very big, directly
Increase the occupied space of entire water cooling equipment.
Summary of the invention
The object of the present invention is to provide a kind of liquid level controlling methods for water cooling system surge tank, to solve because of buffering
Tank Liquid level is simple and causes its volume that excessive problem is arranged.
A kind of liquid level controlling method for water cooling system surge tank of the invention is achieved in that
A kind of liquid level controlling method for water cooling system surge tank, comprising the following steps:
S1: according to the pipeline diameter of water cooling system, the volume capacity of length and each equipment in addition to surge tank,
Determine the total volume capacity of water cooling system；
S2: the minimum temperature and maximum temperature of coolant liquid in water cooling system are determined；
S3: volume change of the coolant liquid in minimum temperature and maximum temperature in water cooling system is calculated；
S4: it determines the diameter of surge tank, and coolant liquid is calculated in minimum temperature and maximum temperature according to its cross-sectional area
Corresponding liquid level in surge tank；
S5: according to coolant liquid, in maximum temperature, corresponding liquid level determines the height of surge tank in surge tank；
S6: the theoretical liquid level of surge tank under arbitrary height is determined；
S7: the temperature of coolant liquid and the actual liquid level in surge tank in real-time monitoring water cooling system, and carry out in time
Supplement keeps actual liquid level equal with theoretical liquid level.
Further, in step S1, the equipment in water cooling system includes surge tank, cooling valve group, cooler and circulation
Pump.
Further, in step S3, the calculation of volume change are as follows:
In formula, V is water cooling system volume capacity, unit m3；
Δ V is coolant liquid volume change, unit m3；
T1For the minimum temperature of coolant liquid, unit is DEG C；
T2For the maximum temperature of coolant liquid, unit is DEG C；
For T1At a temperature of coolant liquid density, unit Kg/m3；
For T2At a temperature of coolant liquid density, unit Kg/m3。
Further, in step S4, according to mass conservation law, the temperature change front and back matter of the coolant liquid of water cooling system
Measure it is constant, then
In formula, S is the cross-sectional area of surge tank, unit m2；
It is T for temperature1When surge tank in liquid level, unit m；
It is T for temperature2When surge tank in liquid level, unit m；Then
Further, in step S5, the height of the surge tank
Further, in step S6, the theoretical liquid level H of surge tank under arbitrary temp TTAre as follows:
Further, in step S7, the temperature of the coolant liquid of water cooling system, which uses, is mounted on cooling valve group inlet
Temperature transmitter measures.
Further, in step S7, the real-time level of the surge tank is carried out using the liquidometer being mounted in surge tank
Measurement.
Further, it is connected with replenisher tank in the water cooling system, and is provided between water cooling system and replenisher tank
Small pump.
After above-mentioned technical proposal, the device have the advantages that are as follows:
The volume change factor that the present invention generates coolant liquid because of temperature change is added in Liquid level, by surge tank
Control liquid level is designed to that a variable relevant to temperature passes through the controlling party to realize being precisely controlled for surge tank liquid level
Method can effectively compress the volume of surge tank, then reduce entire water cooling system occupied space.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structure chart of the water-cooling system of the preferred embodiment of the present invention；
In figure: surge tank 1, circulating pump 2, cooling valve group 3, temperature transmitter 4, small pump 5, replenisher tank 6 are cooling
Device 7.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
In water cooling system, surge tank 1 is coupled, and coolant liquid is sent into cooling valve group 3 through the cooling of subcooler 7
Middle carry out cooling operations, coolant liquid, which is fed again into cooler 7 after absorbing heat in cooling valve group 3 using circulating pump 2, to cool down, after
And carry out the cooling work of next time.And water cooling system in the process of work in, coolant liquid can generate loss, such as in high pressure
State the generations such as coolant liquid such as water can be decomposed, it is also possible to the case where will appear leakage, in order to guarantee entire water cooling system
Pressure be constantly in normal range, to realize the normal work of cooling valve group, it is therefore desirable to by surge tank liquid
Position is precisely controlled to adjust the pressure state of entire water cooling system.
In water cooling system provided in this embodiment, surge tank 1 is coupled, plays to 2 pressure stabilizing of circulating pump and alleviation
The problem of expanding with heat and contract with cold of coolant liquid, and the environment minimum temperature of the water cooling system is -20 DEG C, i.e. the minimum temperature of coolant liquidIt is -20 DEG C, environment maximum temperature is 45 DEG C, and the maximum temperature for the coolant liquid that cooled valve group 3 allows is 60 DEG C, water cooling
But the volume capacity of system is 1000L.
Unfrozen cooling fluid in order to prevent, the ethylene glycol solution that the coolant liquid that this implementation uses is 40% for volumetric concentration, root
It can be checked according to ASHRAE handbook 2005, density of the coolant liquid at -20 DEG C is 1071.98Kg/m3, coolant liquid is close at 60 DEG C
Degree is 1039.61Kg/m3.Equally, density of the coolant liquid between -20 DEG C to 60 DEG C can also be found, and be fitted using EXCEL
It is at density temperature function
ρT=-0.0024T2-0.3074T+1066.8
In formula, ρTFor the density of coolant liquid at a temperature of T, unit Kg/m3；
T is the temperature of coolant liquid, and unit is DEG C.
Coolant liquid volume change Δ V, unit m when calculating from -20 DEG C to 60 DEG C of maximum temperature of minimum temperature3, i.e.,
Wherein V is water cooling system volume capacity, unit m3；
T1For coolant liquid minimum temperature, unit is DEG C；
T2For coolant liquid maximum temperature, unit is DEG C；
For T1At a temperature of coolant liquid density, unit Kg/m3；
For T2At a temperature of coolant liquid density, unit Kg/m3；
Then it carries out surge tank 1 to design, the volume of surge tank 1 should be greater than coolant liquid volume change, the diameter of surge tank 1
Need to cooperate the national standard of end socket during selection, in the present embodiment, the sectional area of surge tank 1 takes S=0.0995m2
(selecting diameter for the cylinder of 356mm), when coolant temperature be -20 DEG C when, set 1 liquid level of surge tank as
According to formula above it can be concluded that the liquid level of surge tank 1 is when coolant temperature is 60 DEG C
Then the height of surge tank 1 takes H=0.4m, and the size of surge tank 1 is Φ 356X400mm.
In addition, surge tank diameter is its interior electrical path length.
And then the theoretical liquid level H of the surge tank 1 at arbitrary temp T can be calculatedT, unit m,
I.e.
By the formula ρ of densityT=-0.0024T2- 0.3074T+1066.8 brings above formula into and can obtain,
Temperature transmitter 4 is mounted on the inlet of cooling valve group 3, and the cold of cooling 3 inlet of valve group can be monitored in real time
But liquid temperature T, and utilize the actual liquid level h of liquidometer real-time monitoring surge tank 1T, and by 1 actual liquid level h of surge tankTWith it is current
The theoretical liquid level H of surge tank 1 under temperature TTIt compares, works as hT<HTWhen, starting small pump 5 is mended from replenisher tank 6 into system
Water, until hT=HTWhen, small pump 5 stops.
The factor of coolant liquid expanded with heat and contract with cold is added in the design of 1 specification of surge tank the present invention, can effectively solve the problem that mesh
The excessive problem of preceding 1 volume of surge tank because caused by 1 Liquid level of surge tank is simple, to reach to 1 liquid level of surge tank
It is precisely controlled, and reduces the volume of surge tank 1, then reduced the occupied space of entire water cooling system.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (9)
1. a kind of liquid level controlling method for water cooling system surge tank, which comprises the following steps:
S1: it according to the pipeline diameter of water cooling system, the volume capacity of length and each equipment in addition to surge tank, determines
The total volume capacity of water cooling system；
S2: the minimum temperature and maximum temperature of coolant liquid in water cooling system are determined；
S3: volume change of the coolant liquid in minimum temperature and maximum temperature in water cooling system is calculated；
S4: it determines the diameter of surge tank, and coolant liquid is calculated according to its cross-sectional area and is buffered in minimum temperature and maximum temperature
Corresponding liquid level in tank；
S5: according to coolant liquid, in maximum temperature, corresponding liquid level determines the height of surge tank in surge tank；
S6: the theoretical liquid level of surge tank under arbitrary height is determined；
S7: the temperature of coolant liquid and the actual liquid level in surge tank in real-time monitoring water cooling system, and supplemented in time,
Keep actual liquid level equal with theoretical liquid level.
2. the liquid level controlling method according to claim 1 for water cooling system surge tank, which is characterized in that step S1
In, the equipment in water cooling system includes surge tank, cooling valve group, cooler and circulating pump.
3. the liquid level controlling method according to claim 1 for water cooling system surge tank, which is characterized in that step S3
In, the calculation of volume change are as follows:
In formula, V is water-cooling system volume capacity, unit m3；
Δ V is coolant liquid volume change, unit m3；
T1For the minimum temperature of coolant liquid, unit is DEG C；
T2For the maximum temperature of coolant liquid, unit is DEG C；
For T1At a temperature of coolant liquid density, unit Kg/m3；
For T2At a temperature of coolant liquid density, unit Kg/m3。
4. the liquid level controlling method according to claim 3 for water cooling system surge tank, which is characterized in that step S4
In, according to mass conservation law, mass conservation before and after the temperature change of the coolant liquid of water cooling system, then
In formula, S is the cross-sectional area of surge tank, unit m2；
It is T for temperature1When surge tank in liquid level, unit m；
It is T for temperature2When surge tank in liquid level, unit m；Then
5. the liquid level controlling method according to claim 4 for water cooling system surge tank, which is characterized in that step S5
In, the height of the surge tank
6. the liquid level controlling method according to claim 4 for water cooling system surge tank, which is characterized in that step S6
In, the theoretical liquid level H of surge tank under arbitrary temp TTAre as follows:
7. the liquid level controlling method according to claim 2 for water cooling system surge tank, which is characterized in that step S7
In, the temperature of the coolant liquid of water cooling system is measured using the temperature transmitter for being mounted on cooling valve group inlet.
8. the liquid level controlling method according to claim 1 for water cooling system surge tank, which is characterized in that step S7
In, the real-time level of the surge tank is measured using the liquidometer being mounted in surge tank.
9. the liquid level controlling method according to claim 1 for water cooling system surge tank, which is characterized in that the water
It is connected with replenisher tank in cooling system, and is provided with small pump between water cooling system and replenisher tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812147.3A CN110513947A (en) | 2019-08-30 | 2019-08-30 | A kind of liquid level controlling method for water cooling system surge tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812147.3A CN110513947A (en) | 2019-08-30 | 2019-08-30 | A kind of liquid level controlling method for water cooling system surge tank |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187619A (en) * | 1984-03-06 | 1985-09-25 | Nippon Steel Corp | Method for controlling quantity of heat extraction of heat exchanger |
| CN201093814Y (en) * | 2007-08-22 | 2008-07-30 | 高秀明 | Energy accumulating and fluid compensating pot |
| CN201981574U (en) * | 2010-12-31 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Pressure stabilization and water supplementing device for closed-cycle water system |
| CN104374125A (en) * | 2014-11-04 | 2015-02-25 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner system device |
| CN107062717A (en) * | 2017-05-18 | 2017-08-18 | 绍兴西爱西尔数控科技有限公司 | Refrigerant is in temperature changing process by compensating the method for determining addition |
-
2019
- 2019-08-30 CN CN201910812147.3A patent/CN110513947A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187619A (en) * | 1984-03-06 | 1985-09-25 | Nippon Steel Corp | Method for controlling quantity of heat extraction of heat exchanger |
| CN201093814Y (en) * | 2007-08-22 | 2008-07-30 | 高秀明 | Energy accumulating and fluid compensating pot |
| CN201981574U (en) * | 2010-12-31 | 2011-09-21 | 北京京诚科林环保科技有限公司 | Pressure stabilization and water supplementing device for closed-cycle water system |
| CN104374125A (en) * | 2014-11-04 | 2015-02-25 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner system device |
| CN107062717A (en) * | 2017-05-18 | 2017-08-18 | 绍兴西爱西尔数控科技有限公司 | Refrigerant is in temperature changing process by compensating the method for determining addition |
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Application publication date: 20191129 |
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