CN101299571A - Circulation cold air apparatus for high voltage frequency conversion equipment - Google Patents
Circulation cold air apparatus for high voltage frequency conversion equipment Download PDFInfo
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- CN101299571A CN101299571A CNA2008101020083A CN200810102008A CN101299571A CN 101299571 A CN101299571 A CN 101299571A CN A2008101020083 A CNA2008101020083 A CN A2008101020083A CN 200810102008 A CN200810102008 A CN 200810102008A CN 101299571 A CN101299571 A CN 101299571A
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Abstract
A cycle cold wind device used in the high pressure frequency conversion device, includes a high pressure frequency conversion device cabinet for the cooling process to the heating components in the cabinet, a heat exchange cabinet for the separating cool to the hot air by the water in the disk pipeline, an air intake connecting channel for delivering the hot air discharged from the high pressure frequency conversion device into the air inlet of the heat exchange cabinet, and an air outtake connecting channel for delivering the cold air discharged from the heat exchange cabinet into the air inlet of the high pressure frequency conversion device. The air in the high pressure frequency conversion device and the heat exchange cabinet constitutes a sealing space of the cold and hot air cycle flow through the air intake connecting channel and the air outtake connecting channel. The device is changed into the sealing door from the traditional high pressure frequency conversion device, then is added with a heat exchange cabinet and two vent channels, thereby better solving the defect on the heat radiation of the high pressure frequency conversion device, with the advantage of simple structure, practicality, low cost of the manufacture, the use and the maintenance, long service life and marked efficacy.
Description
Technical field
The present invention relates to a kind of corollary apparatus of high voltage frequency conversion equipment, exactly, relate to a kind of circulation cold air apparatus that is used for high voltage transducer power unit cabinet, transformer case or other high voltage frequency conversion equipment, belong to the power electronic equipment technical field.
Background technology
Be accompanied by the development of microelectronics, power electronic technology, electronic computer technology and Theory of Automatic Control, converter technique has entered a brand-new era, has not only obtained extensive use in a lot of fields, but also has developed rapidly with rapid changepl. never-ending changes and improvementsly.
As everyone knows, the essence of converter technique is dc inverter to be become alternating current or alternating current become behind the direct current another mistake becomes the alternating current of different frequency or direct current is become alternating current becomes direct current to alternating current again.In these changed, just frequency changed usually.High voltage converter is exactly the transformation of electrical energy device that a kind of speed-sensitive switch effect that utilizes semiconductor power device is transformed to power frequency supply frequency adjustable.Because power electronic power device in ongoing high speed opening and closing process, makes the junction temperature of its semi-conducting material rise rapidly.For this reason, the frequency conversion equipment parts that power electronic power device is formed all are equipped with fin usually, and are provided with air-cooled passage in high voltage converter, make these frequency conversion equipment parts of being made up of power electronic power device can access effective heat radiation and lower the temperature.Outside drawing referring to the critical piece-power cell in the high voltage converter shown in Figure 1, side in power cell casing A just is provided with the air-cooled channel B of heat radiation (being illustrated as the air inlet of this passage) for circulation of air, utilizes flow air and the fin that power device is installed to carry out the working temperature that heat exchange reduces device.
Now, high voltage frequency conversion equipment has obtained extensive use in many fields of national economy (for example different industries such as cement, chemical industry, oil, metallurgy, generating, colliery), and is bringing into play more and more important effect.
Because the temperature of power electronic power device raises, heating, makes the high voltage transducer power unit cabinet that 2% power thermal losses be arranged usually approximately.Especially for powerful high voltage transducer power unit cabinet, this loss that causes because of the power device heating is just more considerable and serious.
Because the case temperature when power electronic power device is in operate as normal should be no more than 85 ℃, this just requires the cabinet internal temperature of high voltage frequency conversion equipment could guarantee that like this high voltage frequency conversion equipment is in normal, stable operating state below 65 ℃.
Introduce two kinds of conventional methods of the solution power device heat radiation of two kinds of high voltage frequency conversion equipments (high voltage transducer power unit cabinet and transformer case) employing now below respectively.
Referring to Fig. 2, introduce the process that air in the air-cooled passage of heat radiation of high voltage transducer power unit cabinet and cabinet air outside circulate: in the cabinet of cold air via Air Filter 4 ingoing power unit cabinets 3, carry out heat exchange and become hot-air via the air-cooled channel B of the heat radiation of power cell 2 and parts-radiator that the power cell 2 of power electronic device is installed again, the driving of the blower fan of being installed by power cell cabinet 3 top sides 1 again makes the cabinet outside of this hot-air through the annular seal space 5 and the ducting outlet 6 deliverying unit cabinets of cabinet.Ducting outlet 6 can be directly installed on outdoor, perhaps just is installed in indoor.Usually, the heat dissipation problem that solves low-power high-voltage frequency converter unit cabinet adopts this traditional approach exactly, and its ducting outlet 6 can be selected any one in above-mentioned two kinds of structures.
The dry-type transformer that high voltage converter uses also has about 1.5～3.5% power thermal losses according to the difference of its capacity.For the transformer case of powerful high voltage converter, the heating problem that this thermal losses loss is caused also is quite serious, and it also can have a direct impact the temperature rise of the power cell cabinet of the work that matches with it.This just requires the technical staff must solve the heat dissipation problem of transformer case.
Referring to Fig. 3, introduce the solution of the heat dissipation problem of high voltage converter transformer case, it also is to adopt cabinet inside that cold air and the cabinet air outside that transformer cools off circulated, its process is as follows: cold air enters in the cabinet of transformer case 7 via the Air Filter 4 of cabinet downside, and in the cabinet of transformer case 7, carry out heat exchange and become hot-air with transformer 8, but under the common driving of the blower fan of installing in the top side of the breeze fan 9 of transformer 8 downsides and transformer case 71, this hot-air is discharged the cabinet outside of transformer cases 7 through the air channel 6 at cabinet 7 tops.Being directly installed on that the outlet in air channel 6 has is outdoor, and just being installed in of also having is indoor.Usually, the heat dissipation problem that solves low-power high-voltage frequency converter transformer case also is to adopt this traditional approach, and, any one in the above-mentioned two kinds of structures of its same selection of air channel 6 outlets.
Because high voltage converter mostly is used for the serious industries of environmental pollution such as cement, iron and steel, chemical industry, power plant, colliery, the traditional approach of above-mentioned solution high voltage frequency conversion equipment heat dissipation problem just presents following unfavorable factor:
Set up Air Filter on the cabinet door of rack, nature can increase product design, processing and assembly technology, use and the workload of maintenance etc.If it is the outlet in air channel 6 is straight-through outdoor, then the air in the workshop can not be recycling, the cold air of sending in the rack just needs to be replenished by the air in the external environment continuously, owing to filling the air dust, sandy soil and molecule in the air of heavy chemical industry surrounding environment, will cause bigger pollution to equipment like this.And, because constantly the air in the workshop is discharged to outdoorly via rack, make airtight workshop have negative pressure, this just makes the door and window in workshop be difficult to open.For fear of this thing happens, the installation environment of high voltage frequency conversion equipment just can not be in sealing state, so also can cause the above-mentioned air that has dust, sandy soil to enter in the rack, influences the useful life of electronic device.
If the outlet in air channel 6 is installed in indoor, the hot blast of discharging from unit cabinet or transformer case will make air themperature in the workshop than higher like this, and this hot-air is sent to again in the rack, just can not realize sufficient heat exchange and cooling effect.At this moment, in order to reduce the temperature in the workshop, common employing is provided with the air-conditioning unit and reduces room temperature, causes the raising of capital expenditure and use cost.
In addition, to also have a kind of mode that solves heat dissipation problem be to adopt water-cooled to the power cell cabinet of high voltage converter.But water-cooling pattern also has its disadvantage: because the piping erection of water is near power cell about having, cause the power supply plug of power cell very inconvenient; The serious hidden danger that also has pipe leakage, it is also very not convenient to operate.Moreover the running of high voltage frequency conversion equipment can make cooling water generation ionization and produce a lot of ions, for the safety of the support equipment electric insulation and the person, water ion absorber device just becomes the auxiliary equipment that must add, thus, cost also just improves, and installs, safeguards also more loaded down with trivial details.
Summary of the invention
In view of this; the purpose of this invention is to provide a kind of circulation cold air apparatus that is used for high voltage frequency conversion equipment; this device not only can solve various defectives or the problem that the existing heat dissipation technology of high voltage frequency conversion equipment exists; and it is simple in structure, practical; make, operation and maintenance with low cost, and can not pollute surrounding environment, also help protecting high voltage frequency conversion equipment; prolong the useful life of its electronic device, effect is remarkable.
In order to achieve the above object, the invention provides a kind of circulation cold air apparatus that is used for high voltage frequency conversion equipment, comprising: the high voltage frequency conversion equipment cabinet that need carry out cooling processing the generating component in its cabinet; It is characterized in that: this device also comprises following parts: the heat exchange cabinet of hot-air being isolated cooling by the ducted water of its plate-like, be used for the hot-air that the high voltage frequency conversion equipment cabinet is discharged is sent into the air intake interface channel of the air inlet of heat exchange cabinet, and the air-out interface channel of the cold air that the heat exchange cabinet is discharged being sent into the air inlet of high voltage frequency conversion equipment cabinet; The space constitutes the seal cavity that a cold and hot air circulation flows via described air intake, two interface channels of air-out in the cabinet of described high voltage frequency conversion equipment cabinet and heat exchange cabinet.
Described high voltage frequency conversion equipment cabinet is power cell cabinet, transformer case.
The structure of described power cell cabinet is formed: arrange in rack, overlappingly be placed with a plurality of power cells that are provided with the cooling heat dissipation air channel, after the cabinet door of rack is closed, be sealing state in the cabinet and be provided with annular seal space; Be installed in the blower fan of cabinet top side, can with flow through each power cell heat dissipation wind channel and be summarized in hot-air in the annular seal space and carry out supercharging after, send into the intake stack that connects power cell cabinet and heat exchange cabinet, enter the heat exchange cabinet at last.
The structure of described transformer case is formed: install the dry-type transformer that its downside has cooling blower in rack, after the cabinet door of rack is closed, be sealing state in the cabinet; Be installed in the blower fan of cabinet top side, can with the coil surface of the transformer of flowing through and on every side the space carry out heat exchange and after the hot-air that becomes carries out supercharging, send into the intake stack that connects transformer case and heat exchange cabinet, enter the heat exchange cabinet at last.
The structure of described heat exchange cabinet is formed: be provided with top-down plate-like copper water pipe in rack, this water pipe runs through, be close to the paliform fin is installed, the water inlet of described water pipe and water return outlet are separately positioned on the downside and the upside in the cabinet outside, and the top of rack and downside or bottom are respectively equipped with air inlet and air outlet; When hot-air runs through through the fin time from top to bottom, water at low temperature is flowed through by water inlet behind the copper water pipe, again in the process that is flowed out by return pipe, absorbs the heat of hot-air and finishes heat exchange.
The air that carries out heat exchange that circulates in the seal cavity that described circulation cold air apparatus constitutes can keep its cleanliness factor, not be subjected to external environmental.
The present invention is a kind of circulation cold air apparatus that is used for high voltage frequency conversion equipment; this device makes full use of the heat radiation approach of existing high voltage frequency conversion equipment; need not carry out large-scale technological transformation (in fact to existing high voltage frequency conversion equipment; apparatus of the present invention can play the effect of simplifying to the structure of high pressure frequency conversion equipments such as unit cabinet); as long as change the cabinet door of traditional high voltage frequency conversion equipment band Air Filter into hermatic door; dispose a heat exchange cabinet and two air handling connection roads again; the various defectives of existing various high voltage frequency conversion equipment on heat dissipation technology just can have been solved preferably; this apparatus structure is simple; practical; make; operation and maintenance with low cost; the operation of this device neither can be subjected to the influence of its main application occasion-weight chemical industry environmental pollution; can not produce new pollution to surrounding environment yet; help protecting high voltage frequency conversion equipment; prolong the useful life of its electronic device; the high-temperature water of heat exchange cabinet can carry out comprehensive utilization of energy, and effect is remarkable.Therefore, apparatus of the present invention have good popularization and application prospect.
Description of drawings
Fig. 1 is the outside drawing of the critical piece-power cell of high voltage converter.
Fig. 2 is that the structure of high voltage converter unit cabinet is formed schematic diagram.
Fig. 3 is that the structure of high voltage converter transformer case is formed schematic diagram.
Fig. 4 is that the example structure of apparatus of the present invention when being used for high voltage converter unit cabinet formed schematic diagram.
Fig. 5 is that the example structure of apparatus of the present invention when being used for the high voltage converter transformer case formed schematic diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 4, introduce the structure of the circulation cold air apparatus of one embodiment of the invention-be used for high voltage converter unit cabinet and form.This device includes four parts: the high voltage converter unit cabinet 3 that need carry out cooling processing to the generating component in its cabinet, the heat exchange cabinet 12 of hot-air being isolated cooling by the ducted cold water of its plate-like, be used for the hot-air that high voltage converter unit cabinet is discharged is sent into the air intake interface channel 10 of the air inlet of heat exchange cabinet, and the air-out interface channel 11 of the cold air that the heat exchange cabinet is discharged being sent into the air inlet of high voltage converter unit cabinet; Wherein the space constitutes the seal cavity that a cold and hot air circulation flows via air intake, two interface channels of air-out 10,11 in the cabinet of high voltage converter unit cabinet 3 and heat exchange cabinet 12.
High voltage converter unit cabinet among the present invention keeps original structure substantially: arrange in rack, overlappingly be placed with a plurality of power cells 2 that are provided with the cooling heat dissipation air channel, originally the anti-dust filter mesh on the rack 4 is simplified and is made hermatic door, as long as close cabinet behind the door, just be sealing state in the cabinet.Be installed in the blower fan 1 of cabinet top side, after being used for the heat dissipation wind channel B of each power cell 2 of flowing through and the hot-air that is summarized in annular seal space 5 carried out supercharging, send into the intake stack 10 that connects power cell cabinet 3 and heat exchange cabinet 12, enter heat exchange cabinet 12 at last.
In heat exchange cabinet 12, be provided with top-down plate-like copper water pipe 13, this water pipe runs through, be close to paliform fin 14 is installed, the water inlet 16 of this water pipe and water return outlet 15 are separately positioned on the downside in the cabinet outside and upside (really, the installation site of water inlet and water return outlet also can be arranged on other place), when hot-air runs through through fin from top to bottom from the air inlet at the top of rack, water at low temperature is flowed through by water inlet 16 behind the copper water pipe 13, again from the process that return pipe 15 flows out, absorb the heat of hot-air and make its cooling and finish heat exchange.After cooled air is discharged from the air outlet of heat exchange cabinet 12 bottoms, return the bottom side of unit cabinet again via wind pipe 11, begin again to carry out air-cooled power cell 2.
The working mechanism of apparatus of the present invention is: after the cold air that enters unit cabinet 3 passed the radiator air passage of power cell 2, the hot-air that becomes was summarized in the annular seal space 5.After utilizing the blower fan 1 at unit cabinet 3 tops will be arranged in the hot-air supercharging of annular seal space 5 again, send into the intake stack 10 of linkage unit cabinet 3 and heat exchange cabinet 12, enter heat exchange cabinet 12 at last.The hot-air of this moment begins to pass the fin 14 that is installed with copper water pipe 13 from top to bottom, reenters unit cabinet 3 by return air duct 11 again.Because extraneous water at low temperature enters heat exchange cabinet 12 by water inlet 16, through being installed with the copper water pipe 13 of fin 14, flow out the heat exchange cabinet from water return outlet 15 at last again.And when hot-air passes fin 14 from top to bottom, water at low temperature is then flowed through behind the water pipe 13 by water inlet 16, flow out from water return outlet 15, finish heat exchanging process: the cold water that promptly enters the heat exchange cabinet has absorbed the heat of hot-air in copper pipe 13, discharges heat exchange cabinet 12 from water return outlet; The hot-air of being discharged by unit cabinet 3 is then lowered the temperature and is become cold air, returns again and enters unit cabinet 3.Like this constantly circulation repeatable operation just constantly circulates the heat of power cell 2 by air and water carry out heat exchange and takes away.Solved the heat dissipation problem of the power electronic device in the power cell, power cell 2 has been played cooling effect.
Referring to Fig. 5, introduce the structure of the circulation cold air apparatus of another embodiment of the present invention-be used for high voltage converter transformer case and form.This device also includes four parts: the high voltage converter transformer case 7 that need carry out cooling processing to the generating component-dry-type transformer in its cabinet 8, the heat exchange cabinet 12 of hot-air being isolated cooling by the ducted cold water of its plate-like, be used for the hot-air that the high voltage converter transformer case is discharged is sent into the air intake interface channel 10 of the air inlet of heat exchange cabinet, and the air-out interface channel 11 of the cold air that the heat exchange cabinet is discharged being sent into the air inlet of high voltage converter transformer case 7.Wherein the space constitutes the seal cavity that a cold and hot air circulation flows via air intake, two interface channels of air-out 10,11 in the cabinet of high voltage converter transformer case 7 and heat exchange cabinet 12.
As can be seen, the structure of two embodiment is basic identical, and the main distinction is different high voltage frequency conversion equipment.Therefore, the structure of the transformer case 7 among following brief description second embodiment is formed: install the dry-type transformer 8 that its downside has cooling blower 9 in rack, originally the anti-dust filter mesh on the rack 4 is simplified and is made hermatic door, as long as close cabinet behind the door, just is sealing state in the cabinet.The blower fan 1 that is installed in the cabinet top side be used for flow through the coil surface of transformer 8 and on every side the space carry out heat exchange and after the hot-air that becomes carries out supercharging, send into the intake stack 10 that connects transformer case 7 and heat exchange cabinet 12, enter heat exchange cabinet 12 again.
Similarly, in this heat exchange cabinet 12, be provided with top-down plate-like copper water pipe 13, this water pipe runs through, be close to paliform fin 14 is installed, the water inlet 16 of this water pipe and water return outlet 15 are separately positioned on the downside and the upside in the cabinet outside, when hot-air runs through through fin from top to bottom from the air inlet at the top of rack, water at low temperature is flowed through by water inlet 16 behind the copper water pipe 13, again from the process that return pipe 15 flows out, absorb the heat of hot-air and make its cooling and finish heat exchange.After cooled air is discharged from the air outlet of heat exchange cabinet 12 bottoms, return the bottom side of transformer case 7 again via wind pipe 11, begin again transformer 8 is carried out air-cooled processing.
The working mechanism of this device is: the cold air that enters transformer case 7 is via after wherein forced draft fan 9 passes the coil surface and periphery of transformer 8, become hot-air and converge at the interior sky of sealing cabinet, the blower fan 1 of transformer case 7 top sides is again with after these hot-air superchargings, enter the intake stack 10 that connects transformer case 7 and heat exchange cabinet 12, enter heat exchange cabinet 12 at last.After this hot-air entered heat exchange cabinet 12, the fin 14 that is penetrated with copper water pipe 13 was passed in beginning from top to bottom, reenters transformer case 7 by return air duct 11 again.Because extraneous water at low temperature enters heat exchange cabinet 12 by water inlet 16, through being installed with the copper water pipe 13 of fin 14, flow out heat exchange cabinet 12 from water return outlet 15 at last again.When hot-air passes fin 14 from top to bottom, water at low temperature is flowed through by water inlet 16 behind the water pipe 13, flow out from water return outlet 15, finish heat exchanging process: the cold water that promptly enters the heat exchange cabinet has absorbed the heat of hot-air in copper pipe 13, discharges heat exchange cabinet 12 by water return outlet; The hot-air of being discharged by transformer case 7 is then lowered the temperature and is become cold air, returns at last and enters transformer case 7.Like this constantly circulation repeatable operation constantly circulates the heat of transformer 8 by air and water carry out heat exchange and to take away, and has solved the heat dissipation problems of transformer, and transformer case is played cooling effect.
Claims (6)
1, a kind of circulation cold air apparatus that is used for high voltage frequency conversion equipment comprises: the high voltage frequency conversion equipment cabinet that need carry out cooling processing to the generating component in its cabinet; It is characterized in that: this device also comprises following parts: the heat exchange cabinet of hot-air being isolated cooling by the ducted water of its plate-like, be used for the hot-air that the high voltage frequency conversion equipment cabinet is discharged is sent into the air intake interface channel of the air inlet of heat exchange cabinet, and the air-out interface channel of the cold air that the heat exchange cabinet is discharged being sent into the air inlet of high voltage frequency conversion equipment cabinet; The space constitutes the seal cavity that a cold and hot air circulation flows via described air intake, two interface channels of air-out in the cabinet of described high voltage frequency conversion equipment cabinet and heat exchange cabinet.
2, the circulation cold air apparatus that is used for high voltage frequency conversion equipment according to claim 1 is characterized in that: described high voltage frequency conversion equipment cabinet is power cell cabinet, transformer case.
3, the circulation cold air apparatus that is used for high voltage frequency conversion equipment according to claim 2, it is characterized in that, the structure of described power cell cabinet is formed: arrange in rack, overlappingly be placed with a plurality of power cells that are provided with the cooling heat dissipation air channel, after the cabinet door of rack is closed, be sealing state in the cabinet and be provided with annular seal space; Be installed in the blower fan of cabinet top side, can with flow through each power cell heat dissipation wind channel and be summarized in hot-air in the annular seal space and carry out supercharging after, send into the intake stack that connects power cell cabinet and heat exchange cabinet, enter the heat exchange cabinet at last.
4, the circulation cold air apparatus that is used for high voltage frequency conversion equipment according to claim 2, it is characterized in that, the structure of described transformer case is formed: install the dry-type transformer that its downside has cooling blower in rack, after the cabinet door of rack is closed, be sealing state in the cabinet; Be installed in the blower fan of cabinet top side, can with the coil surface of the transformer of flowing through and on every side the space carry out heat exchange and after the hot-air that becomes carries out supercharging, send into the intake stack that connects transformer case and heat exchange cabinet, enter the heat exchange cabinet at last.
5, the circulation cold air apparatus that is used for high voltage frequency conversion equipment according to claim 1, it is characterized in that, the structure of described heat exchange cabinet is formed: be provided with top-down plate-like copper water pipe in rack, this water pipe runs through, be close to the paliform fin is installed, the water inlet of described water pipe and water return outlet are separately positioned on the downside and the upside in the cabinet outside, and the top of rack and downside or bottom are respectively equipped with air inlet and air outlet; When hot-air runs through through the fin time from top to bottom, water at low temperature is flowed through by water inlet behind the copper water pipe, again in the process that is flowed out by return pipe, absorbs the heat of hot-air and finishes heat exchange.
6, the circulation cold air apparatus that is used for high voltage frequency conversion equipment according to claim 1 is characterized in that: the air that carries out heat exchange that circulates in the seal cavity that described circulation cold air apparatus constitutes can keep its cleanliness factor, not be subjected to external environmental.
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| CN2008101020083A CN101299571B (en) | 2008-03-14 | 2008-03-14 | Circulated cold air apparatus for high voltage frequency conversion equipment |
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| CN2008101020083A CN101299571B (en) | 2008-03-14 | 2008-03-14 | Circulated cold air apparatus for high voltage frequency conversion equipment |
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| CN101299571A true CN101299571A (en) | 2008-11-05 |
| CN101299571B CN101299571B (en) | 2011-05-11 |
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