CN104362837B - A kind of current transformer cooling system - Google Patents
A kind of current transformer cooling system Download PDFInfo
- Publication number
- CN104362837B CN104362837B CN201410683689.2A CN201410683689A CN104362837B CN 104362837 B CN104362837 B CN 104362837B CN 201410683689 A CN201410683689 A CN 201410683689A CN 104362837 B CN104362837 B CN 104362837B
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- China
- Prior art keywords
- vaporizer
- cold
- current transformer
- compressor
- cooling system
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- 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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20936—Liquid coolant with phase change
Abstract
The invention discloses a kind of current transformer cooling system, including heat dissipating cabinet body, vaporizer and interior circulating fan, vaporizer and interior circulating fan are installed in converter cabinet body, are provided with main condenser and compressor in heat dissipating cabinet body, and main condenser is connected by pipeline with compressor；Refrigerant compression is become high temperature and high pressure steam to send into converter cabinet after main condenser by compressor, by each power model in pipeline access current transformer；Flow through the cold-producing medium after each power model and send into vaporizer by pipeline, return in compressor after vaporizer；Interior circulating fan is arranged towards vaporizer, is used for blowing a cold wind over converter cabinet intracoelomic cavity.The present invention has can improve current transformer overall heat exchange efficiency, reduce the advantages such as ambient temperature impact.
Description
Technical field
Present invention relates generally to the technical field of heat dissipation of power electronic equipment, refer in particular to a kind of heat radiation being applicable to current transformer
System.
Background technology
Along with high speed development and the continuous innovation of power electronic devices of Power Electronic Technique, present power electronics dress
The power grade put is increasing, and structure is the compactest, and therefore heat radiation density is increasing, and the problem brought therewith is gradually
Highlight.Operating temperature and fluctuation thereof have the biggest impact, additionally operating temperature to the life and reliability of power electronic devices
Some device is also had direct relation by electric current, and in this field, various heat dissipation technologys emerge in an endless stream, and are respectively arranged with pluses and minuses,
But existing design has existed some bottlenecks.
Existing air-cooled, water-cooled, hot pipe technique, the most highly developed, but its heat exchange efficiency and the device work being provided that
Make temperature and arrived the limit, requirement cannot be met ring temperature is higher when, simultaneously need to huge external heat sink is by it
Heat is taken away.Above-mentioned traditional approach is still taken away heat by air due to final heat exchange form, and the operating temperature of current transformer is
Positive superposition on the basis of ring temperature, the temperature difference is only positive number, and is decided by the efficiency of each link, therefore reaches a certain in ring temperature
During individual value, operating temperature can meet and exceed permissible value；In other words, the form of heat convection, dependence gas and liquid are used
Thermal capacitance takes away heat, cannot meet the radiating requirements under some particular cases.And, when using above-mentioned traditional approach, quilt
The operating temperature of cooling device can be fluctuated affected by the heating power of different operating modes and ring temperature, actually instability
, under long-term temperature fluctuates, device can be because thermal stress produces fatigue aging；Meanwhile, its heat exchange area and the temperature difference and heat exchange
Efficiency is relevant, and the temperature difference is unsuitable excessive, and heat exchange efficiency also has the limit, therefore causes the volume of air-cooled or water cooling heat exchanger relatively
Greatly.
Summary of the invention
The technical problem to be solved in the present invention is that the technical problem existed for prior art, and the present invention provides one
Plant the current transformer cooling system that can improve current transformer overall heat exchange efficiency, reduce ambient temperature impact.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of current transformer cooling system, including heat dissipating cabinet body, vaporizer and interior circulating fan, described vaporizer and interior follow
Ring assembling, in converter cabinet body, is provided with main condenser and compressor in described heat dissipating cabinet body, described main condenser with
Compressor is connected by pipeline；Refrigerant compression is become high temperature and high pressure steam to send into current transformer after main condenser by described compressor
Cabinet, by each power model in pipeline access current transformer；Flow through the cold-producing medium after each power model and send into institute by pipeline
State vaporizer, return in compressor after described vaporizer；Described interior circulating fan is arranged towards vaporizer, is used for unsteady flow
Device cabinet inner chamber is blown a cold wind over.
As a further improvement on the present invention: described interior circulating fan is arranged between vaporizer and compressor, in described
The blowing of circulating fan is towards vaporizer.
As a further improvement on the present invention: in described converter cabinet body, be provided with secondary condenser, described secondary condenser leads to
Crossing pipeline and form loop with main condenser, described vaporizer is between secondary condenser and interior circulating fan.
As a further improvement on the present invention: in described power template, be provided with cold drawing, described cold-producing medium is passed through in cold drawing
Flowing；Or offer refrigerant flow path in described power template, the cold-producing medium stream that described cold-producing medium is passed directly on power model
In road.
As a further improvement on the present invention: described heat dissipating cabinet body is provided with the condensation fan of more than.
As a further improvement on the present invention: described condensation fan is installed on the top of heat dissipating cabinet body.
As a further improvement on the present invention: between described main condenser and each power device, be respectively arranged with cold-producing medium
Branch road, described cold-producing medium branch road is provided with electric expansion valve.
As a further improvement on the present invention: on each described cold-producing medium branch road, be equipped with hydraulic quick coupler.
As a further improvement on the present invention: the cold-producing medium in all power devices confluxes at the port of export, after confluxing
Imported in vaporizer by pipeline.
As a further improvement on the present invention: on the pipeline between described vaporizer and compressor, be additionally provided with counterbalance valve.
Compared with prior art, it is an advantage of the current invention that:
1, the current transformer cooling system of the present invention, uses independent refrigeration system, can use the refrigeration system of smaller power
System, has the advantages such as cost is relatively low, energy-conservation, response is rapid.Whole cooling system is little affected by the impact of ambient temperature, energy
Enough it is applied under the operating mode of relatively epipodium temperature so that the environmental suitability of current transformer is higher.
2, the current transformer cooling system of the present invention, owing to using independent refrigeration system, therefore can be condensed by raising
The temperature difference increases heat exchange efficiency, can design smaller current transformer cooling system the most if desired.
3, the current transformer cooling system of the present invention, when radiator pasted high power device caloric value changes rapidly, can lead to
The control crossing electric expansion valve increases rapidly refrigerant flow, thus improves heat dissipation capacity；By evaporator outlet and radiator
The collection of surface temperature, is completed the regulation of respective valves, thus plays the work stablizing each device operating temperature by control unit
With, it is greatly improved device lifetime and reliability.
4, the current transformer cooling system of the present invention, is dehumidified by vaporizer, and by secondary condenser branch road inner loop
Wind heats, and is substantially reduced relative air humidity in cabinet, is greatly improved device lifetime, reduces fault rate；Secondary condenser branch road can
Play the effect of heater when cold start-up, to improve temperature in current transformer, protection device is not by low temperature effect.
5, the current transformer cooling system of the present invention, the use of hydraulic quick coupler can improve maintenance efficiency so that current transformer can
Flexible combination, improves its autgmentability.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the structural principle schematic diagram of the embodiment of the present invention 2.
Marginal data:
1, copped wave resistance；2, power electronics electric capacity；3, transformator；4, reactor；5, condensation fan；6, compressor；7, main
Condenser；8, rectification module；9, interior circulating fan；10, inversion module；11, vaporizer；13, copped wave module；14, electronic expansion
Valve；15, hydraulic quick coupler；16, counterbalance valve；17, secondary condenser；18, heat dissipating cabinet body；19, converter cabinet.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Embodiment 1: as it is shown in figure 1, a kind of current transformer cooling system of the present invention, including heat dissipating cabinet body 18, vaporizer
11 and interior circulating fan 9, vaporizer 11 and interior circulating fan 9 be installed in converter cabinet 19, be provided with in heat dissipating cabinet body 18
Main condenser 7 and compressor 6, main condenser 7 is connected by pipeline with compressor 6.By compressor 6 by the cold-producing medium pressure in system
Shortening high temperature and high pressure steam into, be scattered in environment by the heat of cold-producing medium by main condenser 7, now cold-producing medium becomes normal temperature high voltage
Liquid sends into converter cabinet 19.After entering converter cabinet 19, cold-producing medium accesses each power model in current transformer by pipeline
On (heater members), becoming low-temp low-pressure gas-liquid mixed state and absorb its heat, complete heat exchange, power template includes rectification module
8, more than one inversion module 10 and copped wave module 13.Flow through the cold-producing medium after each power model and send into vaporizer by pipeline
11, return to after vaporizer 11 in compressor 6.Interior circulating fan 9 is arranged towards vaporizer 11, is used for converter cabinet 19
Inner chamber blow a cold wind over, to take away other heats not leading to cold-producing medium parts, such as: the copped wave resistance being positioned in converter cabinet 19
1, power electronics electric capacity 2, transformator 3 and reactor 4.
In the present embodiment, interior circulating fan 9 is arranged between vaporizer 11 and compressor 6, and the blowing of interior circulating fan 9
Towards vaporizer 11.
In the present embodiment, power template (heater members) being provided with cold drawing, cold-producing medium flows to realize in being passed through cold drawing
Cooling to power model.It is of course also possible to offer refrigerant flow path in power template (heater members), cold-producing medium is direct
It is passed through on power model and carries out heat exchange operation.
In the present embodiment, heat dissipating cabinet body 18 is provided with condensation fan 5, is used for improving the heat exchange efficiency of main condenser 7.This
In example, condensation fan 5 is arranged at the top of heat dissipating cabinet body 18, it will be understood that the most according to actual needs, also may be used
To be arranged at other positions of heat dissipating cabinet body 18, it is also possible to install multiple stage condensation fan 5.
In the present embodiment, heat dissipating cabinet body 18 can be connected fastening with converter cabinet 19 and be integrated, it is possible to individually placed.Become
Stream device cabinet 19 can have one or more, when for time multiple, can be connected by multiple converter cabinets 19 by snap joint
And cabinet.
Embodiment 2: a kind of current transformer cooling system of the present invention, including heat dissipating cabinet body 18, vaporizer 11 and interior circulation
Blower fan 9, vaporizer 11 and interior circulating fan 9 are installed in converter cabinet 19, are provided with main condenser 7 He in heat dissipating cabinet body 18
Compressor 6, main condenser 7 is connected by pipeline with compressor 6.Become high temperature high refrigerant compression in system by compressor 6
Pressure steam, is scattered to the heat of cold-producing medium in environment by main condenser 7, and now cold-producing medium becomes the feeding change of normal temperature high voltage liquid
Stream device cabinet 19.After entering converter cabinet 19, cold-producing medium accesses each power model (heater members) in current transformer by pipeline
On, become low-temp low-pressure gas-liquid mixed state and absorb its heat, complete heat exchange, power template include rectification module 8, more than one
Inversion module 10 and copped wave module 13.Flow through the cold-producing medium after each power model and send into vaporizer 11 by pipeline, through evaporation
Return to after device 11 in compressor 6.Interior circulating fan 9 is arranged towards vaporizer 11, is used for blowing cold to converter cabinet 19 inner chamber
Wind, to take away other heats not leading to cold-producing medium parts, such as: the copped wave resistance 1 that is positioned in converter cabinet 19, power electronics
Electric capacity 2, transformator 3 and reactor 4.
In the present embodiment, interior circulating fan 9 is arranged between vaporizer 11 and compressor 6, and the blowing of interior circulating fan 9
Towards vaporizer 11.
In the present embodiment, power template (heater members) being provided with cold drawing, cold-producing medium flows to realize in being passed through cold drawing
Cooling to power model.It is of course also possible to offer refrigerant flow path in power template (heater members), cold-producing medium is direct
It is passed through on power model and carries out heat exchange operation.
In the present embodiment, heat dissipating cabinet body 18 is provided with condensation fan 5, is used for improving the heat exchange efficiency of main condenser 7.This
In example, condensation fan 5 is arranged at the top of heat dissipating cabinet body 18, it will be understood that the most according to actual needs, also may be used
To be arranged at other positions of heat dissipating cabinet body 18, it is also possible to install multiple stage condensation fan 5.
In the present embodiment, being respectively arranged with cold-producing medium branch road between main condenser 7 and each power device, this cold-producing medium props up
It is provided with electric expansion valve 14 on road, utilizes electric expansion valve 14 that cold-producing medium is throttled so that pressure drops to suitably be worth,
Become Low temperature low pressure liquid, required for guaranteeing that evaporating temperature is as device, also ensure that energy-conservation simultaneously.Due to swollen through electronics
Entering several electric power electronic module after swollen valve 14, evaporation endothermic in it is mounted with the cold drawing of heater element, its evaporating temperature can
Adjust according to the humiture in cabinet, to guarantee dew condensation phenomenon on cold drawing.
In the present embodiment, each cold-producing medium branch road is equipped with hydraulic quick coupler 15, such as, can use and withhold flexible pipe
Hydraulic quick coupler 15 is installed, facilitates its layout in cabinet, can with pressure take apart when safeguarding simultaneously and change.
In the present embodiment, the cold-producing medium in all power devices confluxes at the port of export, is imported by pipeline after confluxing
In vaporizer 11, interior circulating fan 9 its blowing being carried out heat exchange so that cold-producing medium evaporates further, pressure continues simultaneously
Reduce, until being down to the acceptable pressure of inspiration(Pi) of compressor 6, to ensure the operation safety of compressor 6.
In the present embodiment, the pipeline between vaporizer 11 and compressor 6 is additionally provided with counterbalance valve 16, utilizes counterbalance valve 16
Can be further by the pressure drop pressure of inspiration(Pi) that as little as compressor 6 allows, to ensure its safe operation.
In the present embodiment, being additionally provided with secondary condenser 17 in converter cabinet 19, secondary condenser 17 directly passes through pipeline
Form loop with main condenser 7, be used for coordinating with interior circulating fan 9, improve air-cooled efficiency and air-cooled quality.This example
In, secondary condenser 17 is placed on the rear end of vaporizer 11, i.e. vaporizer 11 is between secondary condenser 17 and interior circulating fan 9,
Make interior circulated air first pass through vaporizer 11 to lower the temperature, the steam coagulation in air is discharged, is then passed through secondary condenser 17 and adds
Heat, reduces its relative humidity so that the air that air is cold drying of air cooler part in supply converter cabinet 19.Meanwhile,
Secondary condenser 17 also can be by controlling, with the humiture of abundant regulation air-supply.
In the present embodiment, heat dissipating cabinet body 18 can be connected fastening with converter cabinet 19 and be integrated, it is possible to individually placed.Become
Stream cabinet can have one or more, when for time multiple, can be connected and cabinet by multiple unsteady flow cabinets by snap joint.
From the foregoing, it will be observed that the present invention is directed to power electronic devices different in current transformer, it is divided into two kinds at converter cabinet 19
Radiating mode: directly contact heat radiation and wind-cooling heat dissipating, for power model (large power semiconductor device, such as IGBT), use with
Cold drawing directly contacts the mode of heat radiation, and other device jointly realizes supply cold wind by interior circulating fan 9 and vaporizer 11 and realizes
Heat radiation.
In preferred embodiment, the present invention can also can arrange related transducer further according to the actual load of system
Device collecting temperature pressure parameter is supplied to control system, control system be adjusted throttling arrangement and compressor 6, to ensure
The stable operation of system and energy-conservation.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, should be regarded as the protection of the present invention
Scope.
Claims (8)
1. a current transformer cooling system, it is characterised in that include heat dissipating cabinet body (18), vaporizer (11) and interior circulating fan
(9), described vaporizer (11) and interior circulating fan (9) are installed in converter cabinet (19), peace in described heat dissipating cabinet body (18)
Equipped with main condenser (7) and compressor (6), described main condenser (7) is connected by pipeline with compressor (6)；Described compressor
(6) refrigerant compression becomes high temperature and high pressure steam send into converter cabinet (19) after main condenser (7), is accessed by pipeline and become
In stream device on each power model；Flow through the cold-producing medium after each power model and send into described vaporizer (11) by pipeline, through described
Return to after vaporizer (11) in compressor (6)；Described interior circulating fan (9) is arranged towards vaporizer (11), is used for unsteady flow
Device cabinet (19) inner chamber is blown a cold wind over；Described interior circulating fan (9) is arranged between vaporizer (11) and compressor (6), described interior
The blowing of circulating fan (9) is towards vaporizer (11)；Secondary condenser (17), described pair it is provided with in described converter cabinet (19)
Condenser (17) forms loop by pipeline with main condenser (7), and described vaporizer (11) is positioned at secondary condenser (17) and follows
Between ring blower fan (9)；Described secondary condenser (17) plays the effect of heater with temperature in raising current transformer when cold start-up.
Current transformer cooling system the most according to claim 1, it is characterised in that be provided with cold on described power model
Plate, described cold-producing medium is passed through flowing in cold drawing；Or offering refrigerant flow path on described power model, described cold-producing medium directly leads to
Enter in the refrigerant flow path on power model.
Current transformer cooling system the most according to claim 1, it is characterised in that described heat dissipating cabinet body (18) is provided with one
Condensation fan (5) more than platform.
Current transformer cooling system the most according to claim 3, it is characterised in that described condensation fan (5) is installed on scattered
The top of hot cabinet (18).
Current transformer cooling system the most according to claim 1, it is characterised in that described main condenser (7) and each merit
It is respectively arranged with cold-producing medium branch road between rate device, described cold-producing medium branch road is provided with electric expansion valve (14).
Current transformer cooling system the most according to claim 5, it is characterised in that on each described cold-producing medium branch road all
It is provided with hydraulic quick coupler (15).
Current transformer cooling system the most according to claim 5, it is characterised in that the cold-producing medium in all power devices exists
The port of export confluxes, and is imported in vaporizer (11) by pipeline after confluxing.
Current transformer cooling system the most according to claim 5, it is characterised in that described vaporizer (11) and compressor
(6) counterbalance valve (16) it is additionally provided with on the pipeline between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683689.2A CN104362837B (en) | 2014-11-25 | 2014-11-25 | A kind of current transformer cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683689.2A CN104362837B (en) | 2014-11-25 | 2014-11-25 | A kind of current transformer cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104362837A CN104362837A (en) | 2015-02-18 |
| CN104362837B true CN104362837B (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410683689.2A Active CN104362837B (en) | 2014-11-25 | 2014-11-25 | A kind of current transformer cooling system |
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| Country | Link |
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| CN (1) | CN104362837B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3364735A1 (en) * | 2017-02-15 | 2018-08-22 | Siemens Aktiengesellschaft | Cooling device, converter with a cooling device and method for cooling a converter |
| CN116031780B (en) * | 2023-02-20 | 2023-07-28 | 国网山东省电力公司潍坊市寒亭区供电公司 | Intelligent box-type substation and internal air conditioning method of box-type substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486752A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Power electronic device cooling system and distributed power generation system |
| CN103490595A (en) * | 2013-09-27 | 2014-01-01 | 深圳市禾望电气有限公司 | Converter cabinet |
| CN103648252A (en) * | 2013-11-15 | 2014-03-19 | 深圳市禾望电气有限公司 | Cooling system for electrical device |
| CN204216773U (en) * | 2014-11-25 | 2015-03-18 | 南车株洲电力机车研究所有限公司 | A kind of current transformer cooling system |
-
2014
- 2014-11-25 CN CN201410683689.2A patent/CN104362837B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486752A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Power electronic device cooling system and distributed power generation system |
| CN103490595A (en) * | 2013-09-27 | 2014-01-01 | 深圳市禾望电气有限公司 | Converter cabinet |
| CN103648252A (en) * | 2013-11-15 | 2014-03-19 | 深圳市禾望电气有限公司 | Cooling system for electrical device |
| CN204216773U (en) * | 2014-11-25 | 2015-03-18 | 南车株洲电力机车研究所有限公司 | A kind of current transformer cooling system |
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| CN104362837A (en) | 2015-02-18 |
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