CN107230941B - A kind of power cabinet of parallel air duct heat dissipation - Google Patents
A kind of power cabinet of parallel air duct heat dissipation Download PDFInfo
- Publication number
- CN107230941B CN107230941B CN201710593656.2A CN201710593656A CN107230941B CN 107230941 B CN107230941 B CN 107230941B CN 201710593656 A CN201710593656 A CN 201710593656A CN 107230941 B CN107230941 B CN 107230941B
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- China
- Prior art keywords
- radiator
- crimping
- air duct
- cabinet
- heat dissipation
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Abstract
The invention discloses a kind of power cabinets of parallel air duct heat dissipation, including the blower inside and outside cabinet body and connection cabinet body, interior of the cabinet is equipped with valve string location, valve string location includes multiple crimping radiators and several switching devices, crimping radiator is successively intervally arranged with switching device to be connect, each switching device is arranged between two neighboring crimping radiator, and each extending direction for crimping radiator air passage is consistent；Interior of the cabinet is additionally provided with insulating barrier, interior of the cabinet is divided into air inlet area and wind outlet area by the insulating barrier, multiple through-holes are provided on insulating barrier, crimping radiator one-to-one correspondence insertion through-hole is simultaneously sealed around with through-hole, and air inlet area is located at the air duct two sides for crimping radiator with wind outlet area and is connected to by the air duct of crimping radiator.The temperature rise of each switching device of power cabinet of the invention is consistent, effectively raises radiating efficiency, increases the power density of cabinet body, and small-sized fan can be used, and reduces noise level, and blocking design is easy to the realization of different topology structure.
Description
Technical field
The present invention relates to a kind of power cabinets, pass through group string crimping shape using switching devices such as thyristors more particularly to a kind of
The power cabinet to radiate at parallel air duct.
Background technique
Current compression joint type switching device power cabinet, such as large-scale generator excitation unit, heavy-duty rectifier, are adopted mostly
Unit is connected into single switching device and two trapezoidal radiators, layered arrangement between each unit is connected by copper bar
Mode makes to form series connection air duct between each layer radiator.The air inlet position switch device radiating condition in this series connection air duct is obvious
Better than outlet air position, cause the temperature between each switching device uneven.And since radiator is trapezoidal, air duct leakproofness
Difference, part air quantity is directly entered blower without radiator, so that radiating efficiency is low, limits cabinet body maximum output.
Summary of the invention
Goal of the invention: it is an object of the present invention to provide a kind of power cabinet of parallel air duct heat dissipation, which can make respectively to open
It is consistent to close component temperature rise, and the radiating efficiency in air duct can be effectively improved, increases the power density of cabinet body.
Technical solution: a kind of power cabinet of parallel air duct heat dissipation of the present invention, including in cabinet body and connection cabinet body
Outer blower, the interior of the cabinet are equipped with valve string location, and valve string location includes multiple crimping radiators and several switching devices,
Crimping radiator is successively intervally arranged with switching device and connect, each switching device be arranged two neighboring crimping radiator it
Between, each extending direction for crimping radiator air passage is consistent；Interior of the cabinet is additionally provided with insulating barrier, and the insulating barrier will be in cabinet body
Part is divided into air inlet area and wind outlet area, is provided with multiple through-holes on insulating barrier, crimping radiator correspond insertion through-hole and with
Through-hole is sealed around, enters the wind area and wind outlet area is located at the air duct two sides of crimping radiator and is connected by the air duct of crimping radiator
It is logical.
The utility model has the advantages that a kind of power cabinet of parallel air duct heat dissipation of the present invention is used using crimping radiator and switch
Device is successively intervally arranged connection, forms the valve string location of parallel air duct, so that the temperature rise of each switching device is consistent in valve string, leads to
The gap between insulating barrier sealing valve string location and cabinet body is crossed, so that whole air quantity is flowed through crimping radiator, effectively raises
Radiating efficiency increases the power density of cabinet body, can choose small-sized fan when other conditions are identical, reduces noise level；And
And every group of valve string is a unit, facilitates the realization of different topology structure.
Detailed description of the invention
Fig. 1 is the power cabinet and schematic illustration of parallel air duct heat dissipation；
Fig. 2 is the structural schematic diagram for crimping radiator；
Fig. 3 is valve string component structure diagram；
Fig. 4 is parallel air duct windage and equivalent windage schematic diagram；
Fig. 5 is step air duct schematic diagram；
Fig. 6 is step air duct windage and equivalent windage schematic diagram.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawing.
As shown in Figure 1-3, a kind of power cabinet of parallel air duct heat dissipation of the present invention, including cabinet body 1 and setting exist
The blower 2 at the top of cabinet body 1 is connected to inside blower 2 and cabinet body 1, can inside cabinet body 1 outside exhausting.Valve string is equipped with inside cabinet body 1
Unit, valve string location includes n switching device 4 and n+1 crimping radiator 3, between crimping radiator 3 and switching device 4 successively
It is arranged between adjacent crimping radiator 3 every arrangement mutually crimping, each switching device 4.Crimping radiator 3 is that end face is smooth
Two-sided crimping radiator, and crimp radiator 3 inlet and outlet 32 cross sectional shape rule, advantageously form closing in this way
Radiating efficiency is improved in air duct, and the end face of crimping radiator 3 is equipped with contact surface 31, and switching device 4 is crimped on contact surface 31,
The direction that each crimping radiator 3 is arranged is identical, i.e., the air duct extending direction of each crimping radiator 3 is consistent.It is additionally provided with inside cabinet body 1
Insulating barrier 5, insulating barrier 5 will be divided into air inlet area 6 and wind outlet area 7, the extending direction and pressure of insulating barrier 5 inside cabinet body 1
The extending direction for connecing 3 air duct of radiator is orthogonal, multiple through-holes is provided on insulating barrier 5, it is logical that crimping radiator 3 corresponds insertion
Hole inscribe and through-hole are sealed around, enter the wind area 6 and wind outlet area 7 is located at the air duct two sides of crimping radiator 3, enter the wind area 6 and outlet air
By the air duct connection of crimping radiator 3, insulating barrier 5 between each crimping radiator 3 and will crimp radiator 3 and cabinet in area 7
The gap seals of 1 inner wall of body make the whole air quantity for entering the wind area 6 all flow through crimping radiator 3 and enter wind outlet area 7.In addition, for existing
There is absorption resistance in technology to be placed on air outlet frequently with cylindricality wire resistor or aluminum casing resistor and radiate, heat dissipation performance and
Absorbent properties can only compromise and consider the problems of, are additionally provided with while absorption resistance is equipped with inside cabinet body 1 of the present invention and inhale for adhering to
The resistive dissipation device 8 of resistance is received, absorption resistance uses high-power planar resistance, it is radiated by resistive dissipation device 8, resistive dissipation device
8 are arranged at the air outlet of crimping radiator 3, and the corresponding crimping radiator 3 of a resistive dissipation device 8 is radiated using crimping
The outlet air of device 3 is radiated to resistive dissipation device 8, forms step air duct.Using high-power planar resistance with by the way of resistance radiator 8
Space optimization and heat dissipation problem when solution absorption resistance power consumption is larger, are especially apparent in mesohigh occasion.Planar resistor is specified
Power is big, heat resistance with higher, and resistance power consumption is much smaller with respect to 4 power consumption of switching device, therefore crimps radiator 3 and electricity
It hinders and does not have to sealing between radiator 8, the wind part that crimping radiator 3 comes out flows through resistive dissipation device 8, and rest part is directly by wind
Machine 2 is taken away, so that air duct windage increase caused by two kinds of radiator tandems is not obvious, will not be substantially reduced and flow through crimping heat dissipation
The air quantity of device 3 can take into account the heat dissipation problem of two kinds of different heat sources of switching device 4 and absorption resistance, meanwhile, it contracts to greatest extent
Short the distance between absorption resistance circuit and switching device 4 reduce loop stray parameter, and the voltage for reducing switching device 4 is answered
Power is additionally provided with the wind pressure sensor of real-time detection crimping 3 air duct pressure at both sides of radiator inside cabinet body 1, is sentenced by wind pressure state
Cutout further judges heat dissipation effect through crimping the air quantity of radiator 3.
Such as Fig. 4, the total windage of parallel air duct is about 1/ (n+1) of single switch device radiator, and Rheat is a derailing switch
The windage of part radiator, Rheat/ (n+1) is the windage in parallel of n+1 radiator, then 7 crimping radiator groups in the present embodiment
At parallel air duct windage equivalent windage be Rheat/7.The windage relationship and equivalent windage such as Fig. 5, Fig. 6 in step air duct, wherein
Rheat_R is the windage of resistive dissipation device 8, and Rheat_A is to enter blower 2 directly out of cabinet body 1 after crimping 3 outlet air of radiator
Windage, three's quantitative relation are as follows:
Rheat> Rheat_R> > Rheat_AFormula (1)
So
I.e. the total windage in step air duct is approximately equal to the windage for crimping radiator 3, therefore resistive dissipation device 8 can't be to derailing switch
The air quantity of the crimping radiator 3 of part 4 generates big influence, and the air quantity for flowing through resistive dissipation device 8, which is much smaller than, flows through crimping radiator 3
Air quantity, conform exactly in power cabinet absorption resistance power consumption and be much smaller than 4 power consumption of switching device, the feature small to air quantity demand.Very
The good heat dissipation problem for having taken into account two kinds of different heat sources of switching device 4 and absorption resistance.
Claims (4)
1. a kind of power cabinet of parallel air duct heat dissipation, including the blower inside and outside cabinet body and connection cabinet body, it is characterised in that: described
Interior of the cabinet is equipped with valve string location, and valve string location includes multiple crimping radiators and several switching devices, crimp radiator and
Switching device is successively intervally arranged connection, and each switching device is arranged between two neighboring crimping radiator, and each crimping is radiated
The extending direction in device air duct is consistent；Interior of the cabinet is additionally provided with insulating barrier, and interior of the cabinet is divided into air inlet by the insulating barrier
Area and wind outlet area, are provided with multiple through-holes on insulating barrier, and it is simultaneously sealed around with through-hole that crimping radiator corresponds insertion through-hole,
Air inlet area is located at the air duct two sides of crimping radiator with wind outlet area and the air duct by crimping radiator is connected to；
The interior of the cabinet is additionally provided with absorption resistance and resistive dissipation device, and the absorption resistance is adhered on resistive dissipation device, electricity
Radiator setting is hindered at crimping radiator air outlet, and the corresponding crimping radiator of a resistive dissipation device is dissipated using crimping
The outlet air of hot device is radiated to resistive dissipation device, forms step air duct；It crimps and does not have to sealing between radiator and resistive dissipation device, pressure
It connects the wind part that radiator comes out and flows through resistive dissipation device, rest part is directly taken away by blower, so that two kinds of radiator tandems
Caused air duct windage increase is not obvious, and will not be substantially reduced the air quantity for flowing through crimping radiator, be taken into account switching device and suction
Receive the heat dissipation problem of two kinds of different heat sources of resistance.
2. the power cabinet of parallel air duct heat dissipation according to claim 1, it is characterised in that: the absorption resistance uses plane
Resistance.
3. the power cabinet of parallel air duct heat dissipation according to claim 1, it is characterised in that: the crimping radiator is end face
Smooth two-sided crimping radiator.
4. the power cabinet of parallel air duct heat dissipation according to claim 1, it is characterised in that: the interior of the cabinet is additionally provided with reality
When detection crimping radiator air duct pressure at both sides wind pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593656.2A CN107230941B (en) | 2017-07-19 | 2017-07-19 | A kind of power cabinet of parallel air duct heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593656.2A CN107230941B (en) | 2017-07-19 | 2017-07-19 | A kind of power cabinet of parallel air duct heat dissipation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107230941A CN107230941A (en) | 2017-10-03 |
| CN107230941B true CN107230941B (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710593656.2A Active CN107230941B (en) | 2017-07-19 | 2017-07-19 | A kind of power cabinet of parallel air duct heat dissipation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110829796A (en) * | 2019-10-29 | 2020-02-21 | 大力电工襄阳股份有限公司 | Quick detach formula forced air cooling's thyristor valves |
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| CN105141111A (en) * | 2015-09-29 | 2015-12-09 | 索肯和平(上海)电气有限公司 | Maintenance-free frequency converter |
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| CN203398979U (en) * | 2013-08-02 | 2014-01-15 | 广东明阳龙源电力电子有限公司 | Large-power wind power converter with high-efficiency air channel to radiate heat |
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|---|---|---|---|---|
| CN2819623Y (en) * | 2005-07-21 | 2006-09-20 | 桐乡市三精自动化科技有限公司 | Frequency-variable speed adjuster of separated cooled air flue |
| CN201146655Y (en) * | 2007-12-10 | 2008-11-05 | 广州电器科学研究院 | Clamp-mounting type heat radiation structure |
| CN102447260A (en) * | 2011-10-31 | 2012-05-09 | 中国电力科学研究院 | High-voltage reactive power compensation IGBT power cabinet |
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| CN107230941A (en) | 2017-10-03 |
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