CN204190604U - A kind of heat management system for electric locomotive traction current transformer - Google Patents
A kind of heat management system for electric locomotive traction current transformer Download PDFInfo
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- CN204190604U CN204190604U CN201420714005.6U CN201420714005U CN204190604U CN 204190604 U CN204190604 U CN 204190604U CN 201420714005 U CN201420714005 U CN 201420714005U CN 204190604 U CN204190604 U CN 204190604U
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Abstract
The utility model discloses a kind of heat management system for electric locomotive traction current transformer, comprise cooling tower, evaporator and Inner eycle blower fan, cooling tower is connected with the converter cabinet of electric locomotive traction current transformer, and evaporator and Inner eycle assembling are in converter cabinet; Cooling tower is provided with compressor and condenser, and compressor to be connected with condenser by pipeline and to be become by the refrigerant compression in pipeline high temperature and high pressure steam to fall apart in environment through condenser by heat; Cold-producing medium is divided into two-way after becoming normal temperature high voltage liquid: a road enters in the heat abstractor of converter cabinet internal power device, becomes low-temp low-pressure gas-liquid mixed state and absorbs heat; Another road enters into evaporator, Inner eycle blower fan towards evaporator to blow a cold wind in converter cabinet.The utility model have improve current transformer overall heat exchange efficiency, working temperature be reduced and stable, not easily the advantage such as to be affected by the external environment.
Description
Technical field
The utility model is mainly concerned with the vehicular field of track traffic, refers in particular to a kind of heat management system being applicable to electric locomotive traction current transformer.
Background technology
In modernization high-power electric locomotive application, along with power of traction motor is increasing, the heat dissipation problem of traction convertor highlights day by day, and this, comprising there being the large power semiconductor device such as IGBT and diode, also comprises the devices such as transformer, reactor, electric capacity.Above-mentioned device heating is large, and the density of heat flow rate of actual heat radiation is also increasing, but the highest tolerable temperature is limited, and working temperature and the life and reliability of fluctuation on power electronic device thereof have very large impact; In addition, working temperature also has direct relation to some device by electric current.In this field, various heat dissipation technology emerges in an endless stream, and respectively has pluses and minuses, but there are some bottlenecks in existing design.
Although existing air-cooled, water-cooled, hot pipe technique, very ripe, but because its final heat exchange form still walks heat by airstrip, and the working temperature of current transformer is the just superposition on ring temperature basis, the temperature difference can only be positive number, and be decided by the efficiency of each link, therefore when ring temperature reaches some values, working temperature can meet and exceed permissible value.In other words, its heat exchange efficiency and the device operating temperature that can provide have arrived the limit, cannot meet the demands when ring temperature is higher.For application, along with the fast development of railway transportation, the scope of application of electric locomotive is more and more wider, and be therefore also faced with more and more severe external environment, in the area of some sweltering heat, ambient temperature even can higher than 50 DEG C.Meanwhile, said structure methods for cooling and structure, also need huge external heat sink to be taken away by its heat.Adopt the form of heat convection, rely on the thermal capacitance of gas and liquid to take away heat, cannot meet the radiating requirements under some particular cases.In addition, in existing methods for cooling, the working temperature of cooled device can be subject to the heating power of different operating mode and the impact of ring temperature fluctuation, and be actually unstable, under long-term temperature fluctuation, device can because thermal stress generation fatigue aging.And because its heat exchange area is relevant with the temperature difference and heat exchange efficiency, and the temperature difference is unsuitable excessive, and heat exchange efficiency also has the limit, therefore causes volume that is air-cooled or water cooling heat exchanger larger.
Utility model content
The technical problems to be solved in the utility model is just: the technical problem existed for prior art, and the utility model provides a kind of and improves current transformer overall heat exchange efficiency, working temperature is reduced and the heat management system for electric locomotive traction current transformer that is stable, that be not easily affected by the external environment.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
For a heat management system for electric locomotive traction current transformer, comprise cooling tower, evaporator and Inner eycle blower fan, described cooling tower is connected with the converter cabinet of electric locomotive traction current transformer, and described evaporator and Inner eycle assembling are in converter cabinet; Described cooling tower is provided with compressor and condenser, and described compressor to be connected with condenser by pipeline and to be become by the refrigerant compression in pipeline high temperature and high pressure steam to fall apart in environment through condenser by heat; Described cold-producing medium is divided into two-way after becoming normal temperature high voltage liquid: a road enters in the heat abstractor of converter cabinet internal power device, becomes low-temp low-pressure gas-liquid mixed state and absorbs heat; Another road enters into evaporator, described Inner eycle blower fan towards evaporator to blow a cold wind in converter cabinet.
As further improvement of the utility model: the heat abstractor of described power device is provided with cold drawing, described cold-producing medium passes in cold drawing; Or the heat abstractor of described power device is provided with the passage passed through for cold-producing medium.
As further improvement of the utility model: be provided with condensation fan in described cooling tower, be also provided with the oil cooling heat exchanger for cooling transformer in described cooling tower, described oil cooling heat exchanger is connected with cooling oil pump.
As further improvement of the utility model: be respectively arranged with cold-producing medium branch road between described condenser and each power device, described cold-producing medium branch road is provided with electric expansion valve, by electric expansion valve, throttling is carried out to cold-producing medium.
As further improvement of the utility model: cold-producing medium branch road described in each is equipped with hydraulic quick coupler.
As further improvement of the utility model: in each described power device, conflux in the port of export place of heat abstractor, after confluxing through a gas-liquid separator by gas-liquid separation, wherein gaseous state imports counterbalance valve by pipeline, liquid is imported in evaporator by pipeline.
As further improvement of the utility model: in each described power device, conflux in the port of export place of heat abstractor, after confluxing through a gas-liquid separator by gas-liquid separation, wherein liquidly to be imported in evaporator by pipeline.
As further improvement of the utility model: be provided with secondary condenser in described converter cabinet, be used for coordinating with Inner eycle blower fan.
Compared with prior art, the utility model has the advantage of:
1, the heat management system for electric locomotive traction current transformer of the present utility model is an independent temperature system, can improve current transformer overall heat exchange efficiency, be mainly used to refrigeration; It can use the refrigerating system of smaller power, and cost is lower, energy-conservation, and response rapidly; And the applicable most epipodium temperature of refrigerating system is higher, makes the environmental suitability of current transformer stronger.Because refrigerating system increases heat exchange efficiency by improving the condensation temperature difference, therefore more small-sized current transformer cooling system can be designed if desired.
2, the heat management system for electric locomotive traction current transformer of the present utility model, radiator pastes high power device caloric value when changing rapidly, and the control by electric expansion valve increases refrigerant flow rapidly, thus improves heat dissipation capacity.
3, the heat management system for electric locomotive traction current transformer of the present utility model, can also by the collection of evaporator outlet and spreader surface temperature, the adjustment of respective valves is completed by control unit, thus play the effect of stablizing each device operating temperature, can greatly improve device lifetime and reliability.
4, the heat management system for electric locomotive traction current transformer of the present utility model, is dehumidified by evaporator, and by attached condenser branch to blowing heating, greatly reduces relative air humidity in cabinet, greatly can improve device lifetime, reduces failure rate;
5, the heat management system for electric locomotive traction current transformer of the present utility model, is integrated with air conditioner function, simplifies the system on car, improves reliability, reduces total energy consumption.
6, the heat management system for electric locomotive traction current transformer of the present utility model, the heat exchanger of condenser and transformer oil puts into cooling tower jointly, power of fan can be reduced, reduce cooling tower volume, improve the most high ambient temperature that electric locomotive allows to run, can be all device heat radiations in converter cabinet, can dehumidify in cabinet simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural principle schematic diagram of the utility model embodiment 2.
Marginal data:
1, reactor; 2, contactor; 3, electric capacity; 4, resistance; 5, condensation fan; 6, transformer; 7, oil cooling heat exchanger; 8, cooling oil pump; 9, compressor; 10, condenser; 11, auxiliary change module; 12, copped wave module; 13, evaporator; 14, inversion module; 15, Inner eycle blower fan; 16, rectification module; 17, electric expansion valve; 18, secondary condenser; 19, gas-liquid separator; 20, counterbalance valve; 21, hydraulic quick coupler; 22, cooling tower.
Embodiment
Below with reference to Figure of description and specific embodiment, the utility model is described in further details.
Embodiment 1: as shown in Figure 1, heat management system for electric locomotive traction current transformer of the present utility model, comprise a cooling tower 22 and be installed on compressor 9, the condenser 10 in cooling tower 22, this cooling tower 22 forms a holonomic system jointly with the converter cabinet of electric locomotive traction current transformer.Reactor 1, contactor 2, electric capacity 3, resistance 4, auxiliary change module 11, copped wave module 12, evaporator 13, inversion module 14, Inner eycle blower fan 15, rectification module 16 are installed in converter cabinet.Refrigerant compression in system is become high temperature and high pressure steam by compressor 9, falls apart in environment by condenser 10 by system thermal; After cold-producing medium becomes normal temperature high voltage liquid, be divided into two-way: a road enters in the heat abstractor of converter cabinet internal power device, such as: in the heat abstractor installed in auxiliary change module 11, copped wave module 12, inversion module 14, rectification module 16, the heat that low-temp low-pressure gas-liquid mixed state absorbs IGBT is become; Another road cold-producing medium also enters in evaporator 13, utilizes in Inner eycle blower fan 15 pairs of cabinets and blows a cold wind over, to take away the heat of other illogical cold-producing medium parts, such as: reactor 1, contactor 2, electric capacity 3, resistance 4 etc.These parts have been critical components of a circulation, for ensureing that other appurtenances of system stability reliability service do not embody.Cold-producing medium becomes low area overheat gas after said process, gets back to compressor 9, completes and once circulate.
When embody rule, for the heater members (above-mentioned each power device) of directly contact heat radiation, can adopt logical cold-producing medium in cold drawing, power device laminating cold drawing is also conducted heat to cold-producing medium by cold drawing; Also can adopt the inner directly logical cold-producing medium of heater members, make it at the inner evaporation and heat-exchange of power device and take away heat.
In the present embodiment, in each power device, conflux in the port of export place of heat abstractor, after confluxing through gas-liquid separator 19 by gas-liquid separation, wherein liquid by pipeline importing evaporator 13, by Inner eycle blower fan 15, heat exchange is carried out to its blowing, cold-producing medium is evaporated further, and pressure continues to reduce, until be down to the acceptable pressure of inspiration(Pi) of compressor 9 simultaneously.
In the present embodiment, in cooling tower 22, be provided with condensation fan 5, in this example, be positioned at the top of cooling tower 22.Also be provided with the oil cooling heat exchanger 7 for cooling transformer 6 in cooling tower 22, oil cooling heat exchanger 7 is connected with cooling oil pump 8.Like this, the condenser 10 of refrigerating system shares a condensation fan 5 with the oil cooling heat exchanger 7 of transformer 6, and is arranged on same inside cavity.
Compressor 9 can adopt frequency-changeable compressor according to actual needs.
Embodiment 2: as shown in Figure 2, heat management system for electric locomotive traction current transformer of the present utility model, comprise a cooling tower 22 and be installed on compressor 9, the condenser 10 in cooling tower 22, this cooling tower 22 forms a holonomic system jointly with the converter cabinet of electric locomotive traction current transformer.Reactor 1, contactor 2, electric capacity 3, resistance 4, auxiliary change module 11, copped wave module 12, evaporator 13, gas-liquid separator 19, inversion module 14, Inner eycle blower fan 15, rectification module 16 are installed in converter cabinet.Refrigerant compression in system is become high temperature and high pressure steam by compressor 9, falls apart in environment by condenser 10 by system thermal; After cold-producing medium becomes normal temperature high voltage liquid, be divided into two-way: a road enters in the heat abstractor of converter cabinet internal power device, such as: in the heat abstractor installed in auxiliary change module 11, copped wave module 12, inversion module 14, rectification module 16, the heat that low-temp low-pressure gas-liquid mixed state absorbs IGBT is become; Another road cold-producing medium also enters in evaporator 13, utilizes in Inner eycle blower fan 15 pairs of cabinets and blows a cold wind over, to take away the heat of other illogical cold-producing medium parts, such as: reactor 1, contactor 2, electric capacity 3, resistance 4 etc.These parts have been critical components of a circulation, for ensureing that other appurtenances of system stability reliability service do not embody.Cold-producing medium becomes low area overheat gas after said process, gets back to compressor 9, completes and once circulate.
When embody rule, for the heater members (above-mentioned each power device) of directly contact heat radiation, can adopt logical cold-producing medium in cold drawing, power device laminating cold drawing is also conducted heat to cold-producing medium by cold drawing; Also can adopt the inner directly logical cold-producing medium of heater members, make it at the inner evaporation and heat-exchange of power device and take away heat.
In the present embodiment, in cooling tower 22, be provided with condensation fan 5, in this example, be positioned at the top of cooling tower 22.Also be provided with the oil cooling heat exchanger 7 for cooling transformer 6 in cooling tower 22, oil cooling heat exchanger 7 is connected with cooling oil pump 8.Like this, the condenser 10 of refrigerating system shares a condensation fan 5 with the oil cooling heat exchanger 7 of transformer 6, and is arranged on same inside cavity.
In the present embodiment, cold-producing medium branch road is respectively arranged with between condenser 10 and each power device, this cold-producing medium branch road is provided with electric expansion valve 17, electric expansion valve 17 pairs of cold-producing mediums are utilized to carry out throttling, pressure is made to drop to suitable value, become Low temperature low pressure liquid, to guarantee that evaporating temperature is required for device, also ensure that energy-conservation simultaneously.Owing to entering several electric power electronic module after electric expansion valve 17, evaporation endothermic in the cold drawing that it has installed heater element, its evaporating temperature can adjust according to the humiture in cabinet, to guarantee on cold drawing, dew condensation phenomenon to occur.
In the present embodiment, each cold-producing medium branch road is equipped with hydraulic quick coupler 21, such as, can adopts and withhold flexible pipe to install hydraulic quick coupler 21, facilitate its layout in cabinet, can with pressurely take apart when safeguarding simultaneously and change.
In the present embodiment, in each power device, conflux in the port of export place of heat abstractor, after confluxing through gas-liquid separator 19 by gas-liquid separation, wherein gaseous state imports counterbalance valve 20 by pipeline, liquid by pipeline importing evaporator 13, carries out heat exchange by Inner eycle blower fan 15 to its blowing, cold-producing medium is evaporated further, pressure continues to reduce, until be down to the acceptable pressure of inspiration(Pi) of compressor 9, to ensure the security of operation of compressor 9 simultaneously.
Compressor 9 can adopt frequency-changeable compressor according to actual needs.
In the present embodiment, in cabinet, be also provided with secondary condenser 18, be used for coordinating with Inner eycle blower fan 15, improve air-cooled efficiency and air-cooled quality.
In preferred embodiment, according to the actual load of system, related sensor collecting temperature pressure parameter can also can be set and be supplied to control system, by control system, throttling arrangement and compressor 9 be regulated, to ensure the stable operation of system and energy-conservation.Further can also by gathering the temperature signal of each cold-producing medium branch road, according to the heat dissipation capacity of each cold-producing medium branch road, rapid adjusting refrigerant flow rate and evaporating pressure, thus the effect playing stable blowing temperature and spreader surface temperature, make device operating temperature fluctuate less.
When embody rule, when traction convertor cold-starting, can also by the conversion of cross valve, can play the effect of heating current transformer, improve its temperature to applicable scope, then play machine, refrigerating system converts back refrigerating state.
In sum, the utility model is for power electronic device different in electric locomotive traction current transformer, different radiating modes is adopted in same cabinet, be divided into directly contact heat radiation and wind-cooling heat dissipating, the inside modules of various power device adopts the mode directly contacting heat radiation with cold drawing, use hydraulic quick coupler 21 to connect, in cold drawing, pass into cold-producing medium, other device jointly realizes supply cold wind by Inner eycle blower fan 15 and evaporator 13 and realizes heat radiation.
Below be only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection range of the present utility model should be considered as.
Claims (8)
1. the heat management system for electric locomotive traction current transformer, it is characterized in that, comprise cooling tower (22), evaporator (13) and Inner eycle blower fan (15), described cooling tower (22) is connected with the converter cabinet of electric locomotive traction current transformer, and described evaporator (13) and Inner eycle blower fan (15) are installed in converter cabinet; Described cooling tower (22) is provided with compressor (9) and condenser (10), and described compressor (9) to be connected with condenser (10) by pipeline and to be become by the refrigerant compression in pipeline high temperature and high pressure steam to fall apart in environment through condenser (10) by heat; Described cold-producing medium is divided into two-way after becoming normal temperature high voltage liquid: a road enters in the heat abstractor of converter cabinet internal power device, becomes low-temp low-pressure gas-liquid mixed state and absorbs heat; Another road enters into evaporator (13), described Inner eycle blower fan (15) towards evaporator (13) to blow a cold wind in converter cabinet.
2. the heat management system for electric locomotive traction current transformer according to claim 1, is characterized in that, the heat abstractor of described power device is provided with cold drawing, and described cold-producing medium passes in cold drawing; Or the heat abstractor of described power device is provided with the passage passed through for cold-producing medium.
3. the heat management system for electric locomotive traction current transformer according to claim 1 and 2, it is characterized in that, condensation fan (5) is provided with in described cooling tower (22), also be provided with the oil cooling heat exchanger (7) for cooling transformer (6) in described cooling tower (22), described oil cooling heat exchanger (7) is connected with cooling oil pump (8).
4. the heat management system for electric locomotive traction current transformer according to claim 1 and 2, it is characterized in that, cold-producing medium branch road is respectively arranged with between described condenser (10) and each power device, described cold-producing medium branch road is provided with electric expansion valve (17), by electric expansion valve (17), throttling is carried out to cold-producing medium.
5. the heat management system for electric locomotive traction current transformer according to claim 4, is characterized in that, cold-producing medium branch road described in each is equipped with hydraulic quick coupler (21).
6. the heat management system for electric locomotive traction current transformer according to claim 4, it is characterized in that, in each described power device, conflux in the port of export place of heat abstractor, after confluxing through a gas-liquid separator (19) by gas-liquid separation, wherein gaseous state imports counterbalance valve (20) by pipeline, and liquid state is imported in evaporator (13) by pipeline.
7. the heat management system for electric locomotive traction current transformer according to claim 4, it is characterized in that, in each described power device, conflux in the port of export place of heat abstractor, after confluxing through a gas-liquid separator (19) by gas-liquid separation, wherein liquidly to be imported in evaporator (13) by pipeline.
8. the heat management system for electric locomotive traction current transformer according to claim 1 and 2, is characterized in that, is provided with secondary condenser (18) in described converter cabinet, is used for coordinating with Inner eycle blower fan (15).
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| CN201420714005.6U CN204190604U (en) | 2014-11-25 | 2014-11-25 | A kind of heat management system for electric locomotive traction current transformer |
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| CN201420714005.6U CN204190604U (en) | 2014-11-25 | 2014-11-25 | A kind of heat management system for electric locomotive traction current transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362836A (en) * | 2014-11-25 | 2015-02-18 | 南车株洲电力机车研究所有限公司 | Heat management system for electric locomotive traction converter |
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- 2014-11-25 CN CN201420714005.6U patent/CN204190604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362836A (en) * | 2014-11-25 | 2015-02-18 | 南车株洲电力机车研究所有限公司 | Heat management system for electric locomotive traction converter |
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