CN114433254A - Device and method applied to high-power electronic cooling medium purification - Google Patents
Device and method applied to high-power electronic cooling medium purification Download PDFInfo
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- CN114433254A CN114433254A CN202111602132.8A CN202111602132A CN114433254A CN 114433254 A CN114433254 A CN 114433254A CN 202111602132 A CN202111602132 A CN 202111602132A CN 114433254 A CN114433254 A CN 114433254A
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- 239000002826 coolant Substances 0.000 title claims abstract description 155
- 238000000746 purification Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 238000013461 design Methods 0.000 claims abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000007853 buffer solution Substances 0.000 abstract 2
- 150000002500 ions Chemical class 0.000 description 212
- 230000001276 controlling effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002242 deionisation method Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/02—Column or bed processes
- B01J47/04—Mixed-bed processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/14—Controlling or regulating
-
- 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
-
- 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
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention provides a device and a method for purifying a high-power electronic cooling medium, which are applied to a high-power electronic cooling medium purification device and a method, and comprise an ion exchange tank body, resin, a filter, a pipeline and a valve; an inlet of a tank body of the ion exchanger is connected with an outlet of a main pump of the high-power electronic cooling system, an outlet of the tank body of the ion exchanger is connected with an inlet of a filter, an outlet of the filter is connected with an inlet of an expansion buffer system, and an outlet of the expansion buffer system is connected with an inlet of the main pump of the high-power electronic cooling system. The invention is based on the switching design of the tank body and the pipeline valve of the ion exchanger, so that the cooling medium of the high-power electronic cooling system maintains extremely low conductivity index, the insulation and cooling requirements of the stable operation of the high-power electronic device are met, and the reliability and the service life of the ion exchange purification device are prolonged.
Description
Technical Field
The invention relates to the technical field of cooling equipment of power devices, in particular to a device and a method for purifying a cooling medium applied to high-power electronics.
Background
The high-power electronic equipment such as the direct current transmission converter valve, the flexible direct current converter valve, the high-voltage frequency converter, the high-power reactive compensation device and the like has the characteristics of extremely high reliability requirement, high power density and high heat loss, wherein the electric conductivity of the cooling medium directly influences the insulating property of high-power electronics due to the fact that the power electronic device is in electric contact with the cooling medium, so that the requirement on the electric conductivity of the cooling medium is extremely high, and if the electric conductivity of the cooling medium rises, the leakage current of the power electronic device is increased. In order to ensure the reliability of the device,
the cooling medium of the high-power electronic equipment adopts deionized water with extremely low conductivity or deionized water and a certain proportion of antifreeze, and the cooling medium can meet the operation requirement of the high-power electronic equipment after purification treatment; in the prior art, according to engineering experience, an ion exchanger is connected in series in a main circulation loop of a cooling system for reducing the conductivity of a cooling medium. However, the flow rate of the cooling medium in the main circulation loop is high, generally more than 1.5m/s, and if the impurity ions in the cooling medium are to be effectively removed, the flow rate of the ion exchanger in the purification device must be less than 100m/h, and because of the mismatching of the flow rates, in order to meet the requirement of the cooling cycle, the cooling medium in some ion exchangers passes through at a flow rate higher than 100m/h, which causes that the conductivity of the cooling medium cannot be reduced to the required value or the reduction rate is too slow, and the insulation requirement of the high-power electronic device during operation cannot be met, so that a safety hazard exists; in addition, all the pipelines of the main circulation loop of the cooling system are made of stainless steel, aluminum and other materials and are processed by a strict cleaning process, and when the ion exchangers connected in series cannot effectively filter out ionic impurities in the cooling medium, the metal materials of the pipelines are gradually corroded and electrolyzed under the flushing of the cooling medium in the high-speed operation process of the cooling medium, so that the conductivity of the cooling medium is increased, and greater risks and hidden dangers are caused. In practical engineering application, the purification devices connected in series are adopted, and in order to reduce the flow velocity of the cooling medium entering the ion exchanger, the volume of the ion exchanger needs to be designed to be large, so that the occupied area is increased, and the engineering construction is not facilitated. More importantly, the key equipment in the purification device, the ion exchanger, has certain service life, and is subject to the continuous requirements of cooling and insulation when the high-power electronic device runs, the purification devices connected in series can bring about the interruption of cooling and insulation when needing to be overhauled and replaced, the technical problem is solved by adopting a standby cooling system in engineering, the floor area and the equipment investment are increased, the pipeline structure is complex, the switching operation is complex, and the engineering implementation is not facilitated.
Prior art 1(CN 201584884U) "closed circulation cooling system with conductivity control function" includes a main circulation water pump, a cooling tower, a converter valve interface, a heater, and a degassing tank connected by pipes to form a circulation loop, wherein a deionization loop is connected in parallel to the converter valve interface of the circulation loop. In the prior art 1, the deionization loop connected in parallel with the main circulation loop is arranged to remove ions contained in water, so that the conductivity of a circulation medium is effectively reduced, the stable operation of the whole circulation cooling system is ensured, and the stable operation of the converter valve is reliably ensured. However, in the prior art 1, the inlet of the ion exchanger is connected to the outlet of the cooling tower, and the purpose is to prevent the temperature of the cooling medium from exceeding the working temperature of the ion exchange resin, to cool the cooling medium in the cooling tower and then enter the ion exchanger, and only when the temperature of the cooling medium is lower than the working temperature of the ion exchange resin, the cooling medium enters the ion exchanger, and in addition, the prior art 1 does not relate to the problem of how to realize stable conductivity in the parallel and series design and maintenance process of the ion exchanger. The design and control method of the ion exchanger for improving the system reliability and ensuring the stable conductivity are not involved.
Therefore, a device and a method for purifying a cooling medium applied to high-power electronics are needed to be researched to ensure that the conductivity of the cooling medium of the high-power electronics meets the operation requirement.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a device and a method for purifying a high-power electronic cooling medium.
The invention adopts the following technical scheme.
The invention provides a purifying device for a cooling medium applied to high-power electronics, wherein the cooling medium reaches the inlet end of the inner cooling heat exchange equipment of the high-power electronics from the outlet end of the inner cooling heat exchange equipment of the high-power electronics through a main circulation loop; according to the flowing direction of the cooling medium, a main pump and an external cooling heat exchange device are sequentially arranged on the main circulation loop.
The purification device is connected with the main circulation loop in parallel, the outlet end of the purification device is connected with the inlet end of the main pump, and the inlet end of the purification device is connected with the outlet end of the external cooling heat exchange equipment;
the purification device comprises a first ion exchanger and a second ion exchanger; the connection mode of the first ion exchanger and the second ion exchanger comprises the following steps: connected in parallel and connected in series;
when the first ion exchanger and the second ion exchanger are connected in parallel, one of the ion exchangers is in a working state, and the other ion exchanger is in a standby state;
when the first ion exchanger and the second ion exchanger are connected in series, the two ion exchangers are in a working state, and a cooling medium sequentially passes through the two ion exchangers;
the flow rate of the cooling medium in the main circulation loop is not lower than 1.5m/s, and the flow rate of the cooling medium in the working ion exchanger is less than 100 m/h.
The outlet pipeline of the first ion exchanger is provided with a first conductivity sensor for monitoring the conductivity of the cooling medium treated by the first ion exchanger;
an outlet pipeline of the second ion exchanger is provided with a second conductivity sensor for monitoring the conductivity of the cooling medium treated by the second ion exchanger;
and when the conductivity of the cooling medium treated by the ion exchanger in the working state is not less than the first conductivity index, the operation is quitted, and the ion exchanger in the standby state is put into operation.
The inlet end of the purification device is provided with a first valve; the inlet end of the inner cooling heat exchange equipment of the high-power electronic device is provided with a third conductivity sensor which is used for monitoring the conductivity of the cooling medium at the inlet end of the inner cooling heat exchange equipment of the high-power electronic device; the conductivity of a cooling medium at the inlet end of the internal cooling heat exchange equipment of the high-power electronic device is regulated by the control device, so that the flow of the cooling medium in the purification device is controlled;
when the measured value of the conductivity of the cooling medium is not less than the first conductivity index, adjusting the first valve, and operating the purification device at the designed flow;
when the measured value of the conductivity of the cooling medium is not greater than the second conductivity index, adjusting the first valve and operating the purification device at the first flow rate; wherein the first flow rate is 5-10% of the design flow rate;
wherein the second conductivity indicator is less than the first conductivity indicator. The first conductivity index was 0.20. mu.s/cm and the second conductivity index was 0.15. mu.s/cm.
The purification device comprises: the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve;
the inlet end of the second valve and the inlet end of the fifth valve are both connected with the outlet end of the first valve;
the outlet end of the second valve is connected with the inlet end of the third valve and the inlet end of the first ion exchanger; the outlet end of the fifth valve is connected with the inlet end of the fourth valve and the inlet end of the second ion exchanger;
the outlet end of the third valve is connected with the outlet end of the second ion exchanger and the inlet end of the ninth valve through an eighth valve;
the outlet end of the fourth valve is connected with the outlet end of the first ion exchanger and the inlet end of the sixth valve through a seventh valve;
the outlet end of the sixth valve and the outlet end of the ninth valve are connected to the point A.
When the first ion exchanger and the second ion exchanger are connected in parallel, the second valve is opened and the opening degree of the second valve is adjustable, the sixth valve and the ninth valve are opened and the opening degree of the sixth valve is 100%, the fifth valve is opened and the opening degree of the fifth valve is 5%, the third valve, the fourth valve, the seventh valve and the eighth valve are closed and the closing degree of the third valve, the fourth valve, the seventh valve and the eighth valve is 100%, the first ion exchanger is in a working state, and the second ion exchanger is in a standby state; wherein, the opening degree of the second valve is adjusted by the control device to control the flow of the cooling medium in the first ion exchanger;
when the first ion exchanger and the second ion exchanger are connected in parallel, the fifth valve is opened and the opening degree of the fifth valve is adjustable, the sixth valve and the ninth valve are opened and the opening degree of the sixth valve is 100 percent, the second valve is opened and the opening degree of the second valve is 5 percent, the third valve, the fourth valve, the seventh valve and the eighth valve are closed and the closing degree of the third valve, the fourth valve, the seventh valve and the eighth valve is 100 percent, the first ion exchanger is in a standby state, and the second ion exchanger is in a working state; wherein, the opening degree of the fifth valve is adjusted by the control device to control the flow of the cooling medium in the second ion exchanger.
In the ion exchanger in the standby state, the flow rate of the cooling medium is 5-10% of the design flow rate, and the resin in the ion exchanger in the standby state is in a wet state;
wherein, the resins in the first ion exchanger and the second ion exchanger both adopt mixed bed resins.
When the first ion exchanger and the second ion exchanger are connected in series, the second valve is opened and the opening degree of the second valve is adjustable, the fourth valve, the seventh valve and the ninth valve are opened and the opening degree of the fourth valve, the seventh valve and the ninth valve is 100%, the third valve, the fifth valve, the sixth valve and the eighth valve are closed and the closing degree of the eighth valve is 100%, and the cooling medium flows through the first ion exchanger and then flows through the second ion exchanger; wherein, the opening degree of the second valve is adjusted by the control device, and the flow of the cooling medium in the first ion exchanger and the second ion exchanger is controlled;
when the first ion exchanger and the second ion exchanger are connected in series, the fifth valve is opened and the opening degree is adjustable, the third valve, the sixth valve and the eighth valve are opened and the opening degree is 100%, the second valve, the fourth valve, the seventh valve and the ninth valve are closed and the closing degree is 100%, and the cooling medium flows through the second ion exchanger and then flows through the first ion exchanger; wherein, the opening degree of the fifth valve is adjusted by the control device, and the flow of the cooling medium in the second ion exchanger and the first ion exchanger is controlled.
The outlet ends of the first ion exchanger and the second ion exchanger are both connected with a first filter; a first filter for preventing the resin from flowing into the main circulation circuit with the cooling medium after being crushed, the filtration accuracy being not more than 10 μm;
a third filter is arranged in the first ion exchanger, a fourth filter is arranged in the second ion exchanger, and the filters are positioned at the outlet end of the ion exchanger;
and the third filter and the fourth filter are used for preventing the resin in the ion exchanger from leaking, and the filtering precision is not more than 250 mu m.
The purification device further comprises: an expansion buffer tank, a nitrogen cylinder and a flowmeter; the purification device is connected with the inlet end of the main pump through an expansion buffer tank;
the expansion buffer tank is used for buffering pressure fluctuation generated after the volume of a cooling medium in the cooling system is changed due to temperature change;
the nitrogen cylinder is used for supplementing nitrogen to the expansion buffer tank when the pressure of the expansion buffer tank is lower than the working pressure so as to ensure the pressure balance of the expansion buffer tank;
and the flowmeter is used for monitoring the flow of the cooling medium purified by the purifying device.
The invention provides a method for purifying a cooling medium applied to high-power electronics, which comprises the following steps:
step 1, obtaining the design flow Q of a main circulation loop of a cooling system1And rated total capacity Q of cooling medium2；
F＝max(α1Q1,α2Q2)
in the formula, alpha1Designing the flow proportionality coefficient, alpha, for the main circulation loop2Is the rated total capacity proportionality coefficient of the cooling medium;
step 4, collecting the conductivity sigma of the cooling medium at the outlet of the first ion exchanger or the second ion exchanger1(ii) a The conductivity sigma of the cooling medium at the outlet of the first ion exchanger or the second ion exchanger1Comparing with the conductivity index, and controlling one ion exchanger to be in a standby state when the other ion exchanger is controlled to be in operation by the control device according to the comparison result.
Preferably, in step 2, the main circulation loop designs a flow proportionality coefficient alpha1The value is not less than 2%, and the proportional coefficient alpha of the rated total capacity of the cooling medium2The value is not less than 25%.
Preferably, step 2 comprises:
step 2.1, calculating the design flow F of the first ion exchanger and the second ion exchanger;
step 2.2, the resin capacities of the first ion exchanger and the second ion exchanger are the same, and the resin capacity V is calculated according to the following relation:
V＝F×(1÷X)
in the formula, X is 1m3The resin capacity is used for treating the capacity of a cooling medium, and the value of X is not more than 90%;
step 2.3, the diameters of the first ion exchanger and the second ion exchanger are the same, and the diameter d is calculated according to the resin capacity V and the constraint condition that the flow rate is not more than 80 m/h;
step 2.4, the heights of the first ion exchanger and the second ion exchanger are the same, and the height H is calculated according to the following relation:
V＝πr2H
wherein r is the radius of the first ion exchanger and the second ion exchanger;
when H is more than 1000mm, the height of the ion exchanger is designed according to the actual calculation result; when H is less than or equal to 700mm, the height of the ion exchanger is designed according to 900 mm; when the height of the ion exchanger is more than or equal to 1000mm and more than H is more than 700mm, the height of the ion exchanger is designed according to 1000 mm.
Preferably, in step 3,
1) when sigma is0When the flow rate is more than or equal to 0.20 mu s/cm, the first ion exchanger or the second ion exchanger operates at the designed flow rate;
2) when sigma is0And when the flow rate is less than or equal to 0.15 mu s/cm, the first ion exchanger or the second ion exchanger is operated at a first flow rate, wherein the first flow rate is 5-10% of the design flow rate.
Preferably, in step 4, when σ is1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves, and under the condition that the two ion exchangers keep a parallel operation mode, the ion exchanger in the current working state quits operation and the ion exchanger in the current standby state is put into operation.
Preferably, step 4 further comprises, when σ1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves to switch the operation mode of the two ion exchangers from the parallel operation mode to the serial operation mode.
The beneficial effects of the invention are that compared with the prior art: the invention provides a device and a method for purifying a high-power electronic cooling medium, which are applied to the purification of the high-power electronic cooling medium, wherein an ion exchange loop connected with a main circulation loop in parallel is arranged, and the capacity of the ion exchanger is ensured to meet the design requirement by switching a tank body of the ion exchanger and a pipeline valve, so that the flow rate of the purification of the cooling medium is controlled within a reasonable range, the cooling medium of a high-power electronic cooling system is kept at an extremely low conductivity index, the insulation and cooling requirements of the stable operation of a high-power electronic device are met, and the service life of the ion exchange purification device is prolonged.
The invention also has the following beneficial effects:
1) the purification device and the main circulation loop are connected in parallel, so that the flow velocity of a cooling medium in the main circulation loop is not lower than 1.5m/s, and the flow velocity of an ion exchanger in the purification device is smaller than 100m/h, thereby ensuring effective removal of ionic impurities in the cooling impurities, improving the working efficiency of the purification device, meeting the conductivity index of the cooling medium of a high-power electronic cooling system, and ensuring the operation safety of high-power electronic equipment;
2) in the high-speed operation process of the purified cooling medium, the damage to the metal materials of the pipeline, such as scouring, corrosion, electrolysis and the like, is obviously reduced, the cooling medium continuously meets the conductivity index of a high-power electronic cooling system, and the operation and maintenance cost of the main circulation loop pipeline is also reduced;
3) the purification devices connected in parallel are adopted, the pipeline length of the main circulation loop cannot be increased, and the occupied area is effectively reduced and the construction cost is saved by means of engineering design such as stacking, high-position arrangement and the like;
4) the key equipment in the purification device, ion exchanger, adopts the mode of working one by one and is equipped with, and when work ion exchanger need overhaul the change, through simple valve combination operation, switch to reserve ion exchanger, do not have any influence to refrigerated continuation and insulating continuation when high-power electronic device moves, effectively reduce area and equipment investment, pipeline structure is simple, and the switching operation is convenient, is favorable to the engineering popularization to implement.
5) According to the requirement of high-power electronic equipment on the conductivity of a cooling medium, based on the design flow of an ion exchanger, indexes of the diameter, the height and the resin volume of the ion exchanger are provided;
6) the inlet of the ion exchange loop is provided with an electric valve, and the electric valve is automatically adjusted according to the conductivity detection index of the main circulation loop, so that the service life of the ion exchanger resin is prolonged while the system operation is met.
7) Through the switching of the valve and the pipeline, the redundancy and the series combination operation of the ion exchanger are realized, and the service life of the ion exchange purification device is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a cooling medium purification device applied to high-power electronics in the invention;
1-main pump;
2-external cooling heat exchange equipment;
3-high power electronic heating device;
4-a first valve;
5-a second valve;
6-a third valve;
7-a fourth valve;
8-a fifth valve;
9-a sixth valve;
10-a seventh valve;
11-an eighth valve;
12-a ninth valve;
13-a first filter;
14-a flow meter;
15-a second filter;
16-tenth valve;
17-a first ion exchanger;
18-a second ion exchanger;
19-an expansion buffer tank;
20-nitrogen gas cylinder;
21-a third filter;
22-a fourth filter;
23-a control device;
24-a first conductivity sensor;
25-a second conductivity sensor;
26-a third conductivity sensor;
fig. 2 is a block diagram of the steps of a method for purifying a cooling medium applied to high-power electronics in accordance with the present invention.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
The invention adopts the following technical scheme.
On one hand, the invention provides a purifying device applied to a high-power electronic cooling medium, wherein the cooling medium reaches the inlet end of the internal cooling heat exchange equipment of the high-power electronic device 3 from the outlet end of the internal cooling heat exchange equipment of the high-power electronic device 3 through a main circulation loop; according to the flowing direction of the cooling medium, a main pump 1 and an external cold heat exchange device 2 are sequentially arranged on the main circulation loop.
As shown in fig. 1, the purification device is connected in parallel with the main circulation loop, the outlet end of the purification device is connected with the inlet end of the main pump 1, and the inlet end of the purification device is connected with the outlet end of the external cold heat exchange device 2;
the purification device comprises a first ion exchanger 17, a second ion exchanger 18; the first ion exchanger 17 and the second ion exchanger 18 are connected in a manner that includes: connected in parallel and connected in series.
When the first ion exchanger and the second ion exchanger are connected in parallel, one of the ion exchangers is in a working state, and the other ion exchanger is in a standby state; the key equipment in the purification device, ion exchanger, adopts the mode of working one by one and is equipped with, and when work ion exchanger need overhaul the change, through simple valve combination operation, switch to reserve ion exchanger, do not have any influence to refrigerated continuation and insulating continuation when high-power electronic device moves, effectively reduce area and equipment investment, pipeline structure is simple, and the switching operation is convenient, is favorable to the engineering popularization to implement.
When the first ion exchanger and the second ion exchanger are connected in series, both the two ion exchangers are in a working state, and the cooling medium passes through the two ion exchangers in sequence.
The flow rate of the cooling medium in the main circulation loop is not lower than 1.5m/s, and the flow rate of the cooling medium in the working ion exchanger is less than 100 m/h.
The outlet pipeline of the first ion exchanger 17 is provided with a first conductivity sensor 24 for monitoring the conductivity of the cooling medium processed by the first ion exchanger 17;
the outlet pipeline of the second ion exchanger 18 is provided with a second conductivity sensor 25 for monitoring the conductivity of the cooling medium processed by the second ion exchanger 18;
and when the conductivity of the cooling medium treated by the ion exchanger in the working state is not less than the first conductivity index, the operation is quitted, and the ion exchanger in the standby state is put into operation.
The inlet end of the purification device is provided with a first valve 4; a third conductivity sensor 26 is arranged at the inlet end of the inner cooling heat exchange equipment of the high-power electronic device 3 and is used for monitoring the conductivity of the cooling medium at the inlet end of the inner cooling heat exchange equipment of the high-power electronic device; the conductivity of the cooling medium at the inlet end of the inner cooling heat exchange equipment of the high-power electronic device 3 is adjusted by the control device 23, so that the flow of the cooling medium in the purification device is controlled; the inlet of the ion exchange loop is provided with an electric valve, and the electric valve is automatically adjusted according to the conductivity detection index of the main circulation loop, so that the service life of the ion exchanger resin is prolonged while the system operation is met.
When the measured value of the conductivity of the cooling medium is not less than the first conductivity index, adjusting the first valve, and operating the purification device at the designed flow;
when the measured value of the conductivity of the cooling medium is not greater than the second conductivity index, adjusting the first valve and operating the purification device at the first flow rate; wherein the first flow rate is 5-10% of the design flow rate;
wherein the second conductivity index is less than the first conductivity index, the first conductivity index is 0.20 μ s/cm, and the second conductivity index is 0.15 μ s/cm. It is noted that in the preferred embodiment of the present invention, the values of the first conductivity indicator and the second conductivity indicator are a non-limiting preferred choice. And a return difference of a value of 0.05 is set between the first conductivity index and the second conductivity index, so that frequent switching is avoided.
The purification device comprises: a second valve 5, a third valve 6, a fourth valve 7, a fifth valve 8, a sixth valve 9, a seventh valve 10, an eighth valve 11, a ninth valve 12, a first ion exchanger 17, and a second ion exchanger 18;
the inlet end of the second valve 5 and the inlet end of the fifth valve 8 are both connected with the outlet end of the first valve 4;
the outlet end of the second valve 5 is connected with the inlet end of the third valve 6 and the inlet end of the first ion exchanger 17; the outlet end of the fifth valve 8 is connected with the inlet end of the fourth valve 7 and the inlet end of the second ion exchanger 18;
the outlet end of the third valve 6 is connected with the outlet end of the second ion exchanger 18 and the inlet end of the ninth valve 12 through an eighth valve 11;
the outlet end of the fourth valve 7 is connected with the outlet end of the first ion exchanger 17 and the inlet end of the sixth valve 9 through a seventh valve 10;
the outlet of the sixth valve 9 is connected to the outlet of the ninth valve 12 at point a.
When the first ion exchanger 17 and the second ion exchanger 18 are connected in parallel, the second valve 5 is opened and the opening degree is adjustable, the sixth valve 9 and the ninth valve 12 are opened and the opening degree is 100%, the fifth valve 8 is opened and the opening degree is 5%, the third valve 6, the fourth valve 7, the seventh valve 10 and the eighth valve 11 are closed and the closing degree is 100%, the first ion exchanger 17 is in a working state, and the second ion exchanger 18 is in a standby state; wherein, the control device 23 adjusts the opening degree of the second valve 5, controls the flow rate of the cooling medium in the first ion exchanger 17, and realizes the control of the conductivity;
when the first ion exchanger 17 and the second ion exchanger 18 are connected in parallel, the fifth valve 8 is opened and the opening degree is adjustable, the sixth valve 9 and the ninth valve 12 are opened and the opening degree is 100%, the second valve 5 is opened and the opening degree is 5%, the third valve 6, the fourth valve 7, the seventh valve 10 and the eighth valve 11 are closed and the closing degree is 100%, the first ion exchanger 17 is in a standby state, and the second ion exchanger 18 is in a working state; wherein, the control device 23 adjusts the opening degree of the fifth valve 8 to control the flow rate of the cooling medium in the second ion exchanger 18, thereby realizing the control of the conductivity.
Through the switching of the valve and the pipeline, the redundancy and the series combination operation of the ion exchanger are realized, and the service life of the ion exchange purification device is prolonged.
In the ion exchanger in the standby state, the flow rate of the cooling medium is 5-10% of the design flow rate, and the resin in the ion exchanger in the standby state is in a wet state;
wherein, the resins in the first ion exchanger and the second ion exchanger are mixed bed resins.
When the first ion exchanger 17 and the second ion exchanger 18 are connected in series, the second valve 5 is opened and the opening degree is adjustable, the fourth valve 7, the seventh valve 10 and the ninth valve 12 are opened and the opening degree is 100%, the third valve 6, the fifth valve 8, the sixth valve 9 and the eighth valve 11 are closed and the closing degree is 100%, the cooling medium flows through the first ion exchanger 17 and then flows through the second ion exchanger 18; wherein, the control device 23 adjusts the opening degree of the second valve 5, controls the flow rate of the cooling medium in the first ion exchanger 17 and the second ion exchanger 18, and realizes the control of the conductivity;
when the first ion exchanger 17 and the second ion exchanger 18 are connected in series, the fifth valve 8 is opened and the opening degree is adjustable, the third valve 6, the sixth valve 9 and the eighth valve 11 are opened and the opening degree is 100%, the second valve 5, the fourth valve 7, the seventh valve 10 and the ninth valve 12 are closed and the closing degree is 100%, the cooling medium flows through the second ion exchanger 18 first and then flows through the first ion exchanger 17; wherein, the control device 23 adjusts the opening degree of the fifth valve 8, and controls the flow rate of the cooling medium in the second ion exchanger 18 and the first ion exchanger 17, so as to realize the control of the conductivity.
The outlet ends of the first ion exchanger 17 and the second ion exchanger 18 are both connected with the first filter 13; a first filter 13 for preventing the resin from flowing into the main circulation circuit with the cooling medium after being crushed, the filtration accuracy being not more than 10 μm;
a third filter 21 is arranged inside the first ion exchanger 17, a fourth filter 22 is arranged inside the second ion exchanger 18, and the filters are positioned at the outlet end of the ion exchanger;
the third filter 21 and the fourth filter 22 are used for preventing the resin in the ion exchanger from leaking, and the filtering precision is not more than 250 μm.
The purification device further comprises: an expansion buffer tank 19, a nitrogen gas cylinder 20, a first filter 13 and a flowmeter 14; the purification device is connected with the inlet end of the main pump 1 through an expansion buffer tank 19;
the expansion buffer tank 19 is used for buffering pressure fluctuation generated after the volume of a cooling medium in the cooling system is changed due to temperature change;
the nitrogen cylinder 20 is used for supplementing nitrogen to the expansion buffer tank when the pressure of the expansion buffer tank is lower than the working pressure so as to ensure the pressure balance of the expansion buffer tank;
and a flow meter 14 for monitoring the flow rate of the cooling medium purified by the purification apparatus.
The invention also provides a method for purifying the cooling medium applied to the high-power electronics, as shown in figure 2, and the method comprises the steps 1 to 4.
Step 1, obtaining the design flow Q of a main circulation loop of a cooling system1And rated total capacity Q of cooling medium2。
F＝max(α1Q1,α2Q2)
in the formula, alpha1Designing the flow proportionality coefficient, alpha, for the main circulation loop2And the rated total capacity proportionality coefficient of the cooling medium.
Specifically, in step 2, the main circulation loop designs a flow proportionality coefficient alpha1The value is not less than 2%, and the proportional coefficient alpha of the rated total capacity of the cooling medium2The value is not less than 25%.
It is noted that in the preferred embodiment of the present invention, the main circulation loop is designed with a flow proportionality coefficient α1And the proportional coefficient alpha of the rated total capacity of the cooling medium2The value of (b) is a non-limiting preferred choice.
Specifically, step 2 comprises:
step 2.1, calculating the design flow F of the first ion exchanger and the second ion exchanger;
step 2.2, the resin capacities of the first ion exchanger and the second ion exchanger are the same, and the resin capacity V is calculated according to the following relation:
V＝F×(1÷X)
in the formula, X is 1m3The resin capacity is used for treating the capacity of a cooling medium, and the value of X is not more than 90%;
step 2.3, the diameters of the first ion exchanger and the second ion exchanger are the same, and the diameter d is calculated according to the resin capacity V and the constraint condition that the flow rate is not more than 80 m/h;
step 2.4, the heights of the first ion exchanger and the second ion exchanger are the same, and the height H is calculated according to the following relation:
V＝πr2H
wherein r is the radius of the first ion exchanger and the second ion exchanger;
when H is more than 1000mm, the height of the ion exchanger is designed according to the actual calculation result; when H is less than or equal to 700mm, the height of the ion exchanger is designed according to 900 mm; when the height of the ion exchanger is more than or equal to 1000mm and more than H is more than 700mm, the height of the ion exchanger is designed according to 1000 mm.
Specifically, in the step 3,
1) when sigma is0When the flow rate is more than or equal to 0.20 mu s/cm, the first ion exchanger or the second ion exchanger operates at the designed flow rate;
2) when sigma is0And when the flow rate is less than or equal to 0.15 mu s/cm, the first ion exchanger or the second ion exchanger is operated at a first flow rate, wherein the first flow rate is 5-10% of the design flow rate.
Step 4, collecting the first ion exchanger or the second ion exchangerConductivity sigma of cooling medium at outlet of two ion exchanger1(ii) a The conductivity sigma of the cooling medium at the outlet of the first ion exchanger or the second ion exchanger1Comparing with the conductivity index, and controlling one ion exchanger to be in a standby state when the other ion exchanger is controlled to be in operation by the control device according to the comparison result.
Specifically, in step 4, when σ is1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves, and under the condition that the two ion exchangers keep a parallel operation mode, the ion exchanger in the current working state quits operation and the ion exchanger in the current standby state is put into operation.
Specifically, step 4 further includes when σ1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves to switch the operation mode of the two ion exchangers from the parallel operation mode to the serial operation mode.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (16)
1. A is applied to the high-power electronic cooling medium purifying plant, the cooling medium is from the outlet end of the inner-cooling heat exchanger rig of the high-power electronic device, via the main circulation loop, reach the inlet end of the inner-cooling heat exchanger rig of the high-power electronic device; according to the flowing direction of the cooling medium, a main pump and an external cold heat exchange device are sequentially arranged on the main circulation loop,
the purification device is connected with the main circulation loop in parallel, the outlet end of the purification device is connected with the inlet end of the main pump, and the inlet end of the purification device is connected with the outlet end of the external cooling heat exchange equipment;
the purification device comprises a first ion exchanger and a second ion exchanger; the connection mode of the first ion exchanger and the second ion exchanger comprises the following steps: connected in parallel and connected in series;
when the first ion exchanger and the second ion exchanger are connected in parallel, one of the ion exchangers is in a working state, and the other ion exchanger is in a standby state;
when the first ion exchanger and the second ion exchanger are connected in series, the two ion exchangers are in a working state, and a cooling medium sequentially passes through the two ion exchangers;
the flow rate of the cooling medium in the main circulation loop is not lower than 1.5m/s, and the flow rate of the cooling medium in the working ion exchanger is less than 100 m/h.
2. The high-power electronic cooling medium purification device as claimed in claim 1,
the outlet pipeline of the first ion exchanger is provided with a first conductivity sensor for monitoring the conductivity of the cooling medium treated by the first ion exchanger;
the outlet pipeline of the second ion exchanger is provided with a second conductivity sensor for monitoring the conductivity of the cooling medium treated by the second ion exchanger;
and when the conductivity of the cooling medium treated by the ion exchanger in the working state is not less than the first conductivity index, the operation is quitted, and the ion exchanger in the standby state is put into operation.
3. The high power electronic cooling medium purification device as claimed in claim 2,
the inlet end of the purification device is provided with a first valve (4); the inlet end of the inner cooling heat exchange equipment of the high-power electronic device is provided with a third conductivity sensor which is used for monitoring the conductivity of the cooling medium at the inlet end of the inner cooling heat exchange equipment of the high-power electronic device; the conductivity of a cooling medium at the inlet end of the internal cooling heat exchange equipment of the high-power electronic device is adjusted by the control device, so that the flow of the cooling medium in the purification device is controlled;
when the measured value of the conductivity of the cooling medium is not less than the first conductivity index, adjusting the first valve, and operating the purification device at the designed flow;
when the measured value of the conductivity of the cooling medium is not greater than the second conductivity index, adjusting the first valve and operating the purification device at the first flow rate; wherein the first flow rate is 5-10% of the design flow rate;
wherein the second conductivity indicator is less than the first conductivity indicator.
4. The high power electronic cooling medium purification device as claimed in claim 3,
the first conductivity index was 0.20. mu.s/cm and the second conductivity index was 0.15. mu.s/cm.
5. The high power electronic cooling medium purification device as claimed in any one of claims 1 to 4,
the purification device comprises: a second valve (5), a third valve (6), a fourth valve (7), a fifth valve (8), a sixth valve (9), a seventh valve (10), an eighth valve (11), and a ninth valve (12);
the inlet end of the second valve (5) and the inlet end of the fifth valve (8) are both connected with the outlet end of the first valve (4);
the outlet end of the second valve (5) is connected with the inlet end of the third valve (6) and the inlet end of the first ion exchanger (17); the outlet end of the fifth valve (8) is connected with the inlet end of the fourth valve (7) and the inlet end of the second ion exchanger (18);
the outlet end of the third valve (6) is connected with the outlet end of the second ion exchanger (18) and the inlet end of the ninth valve (12) through an eighth valve (11);
the outlet end of the fourth valve (7) is connected with the outlet end of the first ion exchanger (17) and the inlet end of the sixth valve (9) through a seventh valve (10);
the outlet end of the sixth valve (9) and the outlet end of the ninth valve (12) are connected to the point A.
6. The high power electronic cooling medium purification device as claimed in claim 5,
when the first ion exchanger and the second ion exchanger are connected in parallel, the second valve (5) is opened and the opening degree of the second valve is adjustable, the sixth valve (9) and the ninth valve (12) are opened and the opening degree of the sixth valve is 100%, the fifth valve (8) is opened and the opening degree of the fifth valve is 5%, the third valve (6), the fourth valve (7), the seventh valve (10) and the eighth valve (11) are closed and the closing degree of the fifth valve is 100%, the first ion exchanger (17) is in a working state, and the second ion exchanger (18) is in a standby state; wherein, the opening degree of the second valve (5) is adjusted by the control device to control the flow of the cooling medium in the first ion exchanger (17);
when the first ion exchanger and the second ion exchanger are connected in parallel, the fifth valve (8) is opened and the opening degree of the fifth valve is adjustable, the sixth valve (9) and the ninth valve (12) are opened and the opening degree of the sixth valve is 100%, the second valve (5) is opened and the opening degree of the second valve is 5%, the third valve (6), the fourth valve (7), the seventh valve (10) and the eighth valve (11) are closed and the closing degree of the second valve is 100%, the first ion exchanger (17) is in a standby state, and the second ion exchanger (18) is in a working state; wherein the opening degree of the fifth valve (8) is adjusted by the control device to control the flow of the cooling medium in the second ion exchanger (18).
7. The high-power electronic cooling medium purification device as claimed in claim 6,
in the ion exchanger in the standby state, the flow rate of the cooling medium is 5-10% of the design flow rate, and the resin in the ion exchanger in the standby state is in a wet state;
wherein, the resins in the first ion exchanger and the second ion exchanger are mixed bed resins.
8. The high power electronic cooling medium purification device as claimed in claim 5,
when the first ion exchanger and the second ion exchanger are connected in series, the second valve (5) is opened and the opening degree is adjustable, the fourth valve (7), the seventh valve (10) and the ninth valve (12) are opened and the opening degree is 100%, the third valve (6), the fifth valve (8), the sixth valve (9) and the eighth valve (11) are closed and the closing degree is 100%, the cooling medium firstly flows through the first ion exchanger (17) and then flows through the second ion exchanger (18); wherein, the control device adjusts the opening degree of the second valve (5) and controls the flow of the cooling medium in the first ion exchanger (17) and the second ion exchanger (18);
when the first ion exchanger and the second ion exchanger are connected in series, the fifth valve (8) is opened and the opening degree is adjustable, the third valve (6), the sixth valve (9) and the eighth valve (11) are opened and the opening degree is 100%, the second valve (5), the fourth valve (7), the seventh valve (10) and the ninth valve (12) are closed and the closing degree is 100%, the cooling medium firstly flows through the second ion exchanger (18) and then flows through the first ion exchanger (17); wherein the opening degree of the fifth valve (8) is adjusted by the control device, and the flow rates of the cooling medium in the second ion exchanger (18) and the first ion exchanger (17) are controlled.
9. The high power electronic cooling medium purification device as claimed in claim 2,
the outlet ends of the first ion exchanger and the second ion exchanger are both connected with a first filter; a first filter for preventing the resin from flowing into the main circulation circuit with the cooling medium after being crushed, the filtration accuracy being not more than 10 μm;
a third filter is arranged in the first ion exchanger, a fourth filter is arranged in the second ion exchanger, and the filters are positioned at the outlet end of the ion exchanger;
and the third filter and the fourth filter are used for preventing the resin in the ion exchanger from leaking, and the filtering precision is not more than 250 mu m.
10. The high-power electronic cooling medium purification device as claimed in claim 1,
the purification device further comprises: an expansion buffer tank, a nitrogen cylinder and a flowmeter; the purification device is connected with the inlet end of the main pump through an expansion buffer tank;
the expansion buffer tank is used for buffering pressure fluctuation generated after the volume of a cooling medium in the cooling system is changed due to temperature change;
the nitrogen cylinder is used for supplementing nitrogen to the expansion buffer tank when the pressure of the expansion buffer tank is lower than the working pressure so as to ensure the pressure balance of the expansion buffer tank;
and the flowmeter is used for monitoring the flow of the cooling medium purified by the purifying device.
11. A high-power electronic cooling medium purification method applied to the high-power electronic cooling medium purification apparatus as recited in any one of claims 1 to 10,
the method comprises the following steps:
step 1, obtaining the design flow Q of a main circulation loop of a cooling system1And rated total capacity Q of cooling medium2；
Step 2, the design flow rates of the first ion exchanger and the second ion exchanger are the same, and the design flow rate F is calculated according to the following relation:
F＝max(α1Q1,α2Q2)
in the formula, alpha1Designing a flow proportionality coefficient, alpha, for the main circulation loop2Is the rated total capacity proportionality coefficient of the cooling medium;
step 3, collecting the conductivity sigma of the cooling medium in the main circulation loop0(ii) a The conductivity sigma of the cooling medium in the main circulation circuit0Comparing the measured value with the conductivity index, and controlling the operation flow of the first ion exchanger or the second ion exchanger by the control device according to the comparison result;
step 4, collecting the first ion exchangeConductivity σ of cooling medium at outlet of exchanger or second ion exchanger1(ii) a The conductivity sigma of the cooling medium at the outlet of the first ion exchanger or the second ion exchanger1Comparing with the conductivity index, and controlling one ion exchanger to be in standby state when the other ion exchanger is controlled by the control device to work according to the comparison result.
12. The method for purifying a cooling medium applied to high-power electronics as claimed in claim 11,
in step 2, the main circulation loop designs a flow proportional coefficient alpha1The value is not less than 2%, and the proportional coefficient alpha of the rated total capacity of the cooling medium2The value is not less than 25%.
13. The method for purifying a cooling medium applied to high power electronics as claimed in claim 12,
the step 2 comprises the following steps:
step 2.1, calculating the design flow F of the first ion exchanger and the second ion exchanger;
step 2.2, the resin capacities of the first ion exchanger and the second ion exchanger are the same, and the resin capacity V is calculated according to the following relation:
V＝F×(1÷X)
in the formula, X is 1m3The resin capacity is used for treating the capacity of a cooling medium, and the value of X is not more than 90%;
step 2.3, the diameters of the first ion exchanger and the second ion exchanger are the same, and the diameter d is calculated by taking the flow rate not more than 80m/h as a constraint condition according to the resin capacity V;
step 2.4, the heights of the first ion exchanger and the second ion exchanger are the same, and the height H is calculated according to the following relation:
V＝πr2H
wherein r is the radius of the first ion exchanger and the second ion exchanger;
when H is more than 1000mm, the height of the ion exchanger is designed according to the actual calculation result; when H is less than or equal to 700mm, the height of the ion exchanger is designed according to 900 mm; when the H is more than 700mm and is more than or equal to 1000mm, the height of the ion exchanger is designed according to 1000 mm.
14. The method for purifying a cooling medium applied to high power electronics as claimed in claim 11,
in the step 3, the step of the method is that,
1) when sigma is0When the flow rate is more than or equal to 0.20 mu s/cm, the first ion exchanger or the second ion exchanger operates at the designed flow rate;
2) when sigma is0And when the flow rate is less than or equal to 0.15 mu s/cm, the first ion exchanger or the second ion exchanger is operated at a first flow rate, wherein the first flow rate is 5-10% of the design flow rate.
15. The method for purifying a cooling medium applied to high power electronics as claimed in claim 14,
in step 4, when σ is1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves, and under the condition that the two ion exchangers keep a parallel operation mode, the ion exchanger in the current working state quits operation and the ion exchanger in the current standby state is put into operation.
16. The method for purifying a cooling medium applied to high power electronics as claimed in claim 14,
step 4 also includes that when the sigma is1When the time is more than or equal to 0.20 mus/cm and lasts for 10s, the control device sends the failure alarm of the ion exchanger in the current working state; the control device switches the valves to switch the operation mode of the two ion exchangers from the parallel operation mode to the serial operation mode.
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| JP2007038128A (en) * | 2005-08-03 | 2007-02-15 | Miura Co Ltd | Ion exchange equipment |
| CN101264954A (en) * | 2008-04-29 | 2008-09-17 | 姚军 | Multi-standard type ion-exchanger |
| CN203128260U (en) * | 2013-03-26 | 2013-08-14 | 贵州黔东电力有限公司 | Internal cold water purification treatment device of electric generator |
| CN109264824A (en) * | 2018-09-18 | 2019-01-25 | 镇江华印电路板有限公司 | A kind of waste water of circuit board production processing system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007038128A (en) * | 2005-08-03 | 2007-02-15 | Miura Co Ltd | Ion exchange equipment |
| CN101264954A (en) * | 2008-04-29 | 2008-09-17 | 姚军 | Multi-standard type ion-exchanger |
| CN203128260U (en) * | 2013-03-26 | 2013-08-14 | 贵州黔东电力有限公司 | Internal cold water purification treatment device of electric generator |
| CN109264824A (en) * | 2018-09-18 | 2019-01-25 | 镇江华印电路板有限公司 | A kind of waste water of circuit board production processing system |
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