CN2722400Y - Distillation cooling transformer of electric locomotive - Google Patents
Distillation cooling transformer of electric locomotive Download PDFInfo
- Publication number
- CN2722400Y CN2722400Y CN 200420084157 CN200420084157U CN2722400Y CN 2722400 Y CN2722400 Y CN 2722400Y CN 200420084157 CN200420084157 CN 200420084157 CN 200420084157 U CN200420084157 U CN 200420084157U CN 2722400 Y CN2722400 Y CN 2722400Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- pressure vessel
- cooling
- electric locomotive
- chiller
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to the distillation cooling transformer of an electric locomotive, which belongs to the technical field of the electric network equipment, comprising a chiller, a pressure vessel and a transformer body. The chiller is communicated with the pressure vessel through an evaporation pipe and a liquid-back pipe; the pressure vessel is provided with coolant, and the transformer body is immersed in the coolant. The transformer of the utility model applies the existing ring core transformer into the field of the electric locomotive; thus, the transformer in the electric locomotive has simple structure and the auxiliary devices are decreased. By making use of the phase change cooling principle, the cooling efficiency of the transformer is improved; the heat transfer capacity in the unit cross-sectional area of the cooling pipe line between the chiller and the pressure vessel is improved, and the heat dissipation capacity in the unit surface area of the chiller and the unit volume power density of the entire transformer are improved. The utility model has the advantages of high functional reliability, good safety, long service life, simple operational maintenance, etc.
Description
Technical field
The utility model relates to a kind of evaporation and cooling power transformer for electric engine, relates in particular to a kind of evaporative cooling power transformer that is applicable to electric locomotive and electric motor car group, belongs to the power network equipment technical field.
Technical background
Main transformer on AC electric locomotive and the electric motor car group is to be used for the 25kV high-tension electricity on the contact line is reduced to the low tension with multiple voltage, to satisfy the vitals of the various motors of locomotive, electrical work needs.
Along with the requirement to main performances such as the hauling capacity of a locomotive and travel speeds constantly promotes, to having higher requirement of the indexs such as weight, volume and power loss of locomotive main transformer, therefore how weight reduction, reduced volume, reduce the wastage and electromagnetic interference becomes electric locomotive and electric motor car group design of transformer and makes key subjects.
So far electric locomotive and the main type of electric motor car group transformer are still oil-cooled transformer, but oil-cooled transformer has himself unsurmountable defective because with oil be coolant to take heat out of be limited, and easily right, oil strain, the expense of changing oil height.At present its improved technical method is considered from optimizing cooling oil circuit and radiator aspect mostly, with the further heat-sinking capability of improving, but to electric locomotive and electric motor car group transformer, the improvement of technical indicators such as its weight, volume, power loss and electromagnetic interference difficulty has bigger lifting.
Existing ring structure iron core transformer, its structure as shown in Figure 1, ring structure iron core has wherein made full use of the directivity of silicon steel sheet, thereby has reduced because of the inconsistent power loss that increases of magnetic circuit and silicon steel sheet orientation.Down long-pending at equal core section, the housing of ring structure iron core is the R type for four jiaos, and the junction that two " O " type sections are the semicircular internal frame body of ladder has two magnetic circuit do not had the triangular space of influence so the existing laminated core structure few 10~12% that is used for oil-cooled transformer of the weight ratio of ring structure iron core.And the slim silicon steel sheet of the processing technology of ring structure iron core employing preferably carries out, and slim silicon steel sheet has good characteristic of magnetization, thereby can reduce the eddy current loss of the iron core of converter.Ring structure iron core need not fastening integral body owing to self be one, improved the anti-short circuit capability of transformer, and the noise that when operation, only has only the magnetostrictive amplitude of silicon steel sheet to be produced, and laminated core structure also has from generation noises such as seam crossing and iron core clamping out-of-flatnesses, so the ring structure iron core noise of transformer is extremely low, can be called environment-friendly type " green transformer ".The ring structure iron core transformer has reduced unloaded excitatory power, has improved power factor, has reduced the electric network reactive-load loss, has improved the mains supply quality.
Though the ring structure iron core transformer has above-mentioned all structural advantages, this so far transformer also is not used in the electric locomotive field.
Summary of the invention
The purpose of this utility model is to propose a kind of evaporation and cooling power transformer for electric engine, change the structure of the existing transformer of electric locomotive and electric motor car group, existing ring structure iron core transformer with superior structural performance is used for the electric locomotive field, and with special cooling fluid, utilize the phase transformation cooling principle, the device body is cooled off, to alleviate the weight of whole electric locomotive transformer, dwindle its volume, reduce the power loss of electric locomotive.
The evaporation and cooling power transformer for electric engine that the utility model proposes, comprise condenser, pressure vessel and transformer body, described condenser is connected with pressure vessel by evaporation tube and liquid back pipe, be provided with cooling fluid in the pressure vessel, transformer body is immersed in the cooling fluid, and the boiling point of cooling fluid is-30 ℃~0 ℃.
The evaporation and cooling power transformer for electric engine that the utility model proposes, its characteristics and advantage are that existing annular core transformer is used for the electric locomotive field, make the simple in structure of use for electric locomotive power transformer, and auxiliary equipment reduces.The cooling of transformer has utilized the phase transformation cooling principle, the cooling effectiveness height, thereby improved the thermal heat transfer capability of the cooling line unit cross-sectional area between condenser and the pressure vessel and the heat-sinking capability of condenser per surface area greatly, effectively improved the power density of whole power transformer unit volume.Link to each other by pipeline between pressure vessel in the power transformer and the condenser, can grow distance and separate, be convenient to the design and installation layout of equipment.This power transformer has high functional reliability, and fail safe is good, long service life, operation maintenance are simple.Compare with existing oil-filled transformer, therefore this power transformer in light weight significantly reduced equipment cost.
Description of drawings
Fig. 1 is the structural representation of existing ring structure iron core transformer.
Fig. 2 is the structural representation of the power transformer of the utility model design.
Among Fig. 1, the 1st, Transformer Winding binding post, the 2nd, interior ring iron core, the 3rd, outer shroud iron core, the 4th, Transformer Winding, the 5th, the annular core window, among Fig. 2, the 6th, condenser, the 7th, cooling fan, the 8th, evaporation tube, the 9th, vaporization chamber, the 10th, pressure vessel, the 11st, cooling fluid, the 12nd, liquid back pipe.
Embodiment
The evaporation and cooling power transformer for electric engine that the utility model proposes, its structure comprise condenser 6, pressure vessel 10 and transformer body as shown in Figure 2.Condenser 6 is connected with pressure vessel 10 by evaporation tube 8 and liquid back pipe 12, is provided with cooling fluid 11 in the pressure vessel 10, and transformer body is immersed in the cooling fluid 11, and the boiling point of cooling fluid is-30 ℃~0 ℃.
The operation principle of the evaporation and cooling power transformer for electric engine of the utility model design is, the winding and unshakable in one's determination the immersion in the coolant of existing annular core transformer are cooled off, coolant absorbs heat from heaters such as winding and iron core surface and vaporizes, steam after the vaporization rises, enter condenser 6 from the vaporization chamber 9 on pressure vessel 10 tops by evaporation tube 8, flow back to pressure vessel 10 by liquid back pipe 12 after in condenser 6, being condensed into liquid.This phase transformation type of cooling makes the simple in structure of transformer, and the cooling of device body evenly.And the heat exchange efficiency height, cooling is significantly.
Used cooling fluid in the utility model transformer can be a dichlorodifluoromethane, and molecular formula is CF
2Cl
2, boiling point is-29.8 ℃, or the difluoro monochlorethane, molecular formula is C
2H
3F
2Cl, boiling point are-9.25 ℃, or HFC-134a, and molecular formula is C
2H
2F
4, boiling point is-26.5 ℃.
Transformer of the present utility model, the temperature rise of cooling fluid thereby adopts transpiration-cooled transformer life to prolong greatly far below the temperature rise of existing oil-cooled transformer top layer oil in the pressure vessel.
Used ring structure iron core transformer in the utility model transformer can be the ring-like volume iron core of the serial three-phase non-excitation pressure adjustment of S11 (S11-M.R) distribution transformer of being produced by the auspicious transformer in capital, Beijing Manufacturing Co., Ltd (being called for short Jing Rui company).
Claims (1)
1, a kind of evaporation and cooling power transformer for electric engine, it is characterized in that this transformer comprises condenser, pressure vessel and transformer body, described condenser is connected with pressure vessel by evaporation tube and liquid back pipe, be provided with cooling fluid in the pressure vessel, transformer body is immersed in the cooling fluid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420084157 CN2722400Y (en) | 2004-07-23 | 2004-07-23 | Distillation cooling transformer of electric locomotive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200420084157 CN2722400Y (en) | 2004-07-23 | 2004-07-23 | Distillation cooling transformer of electric locomotive |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2722400Y true CN2722400Y (en) | 2005-08-31 |
Family
ID=35012770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200420084157 Expired - Fee Related CN2722400Y (en) | 2004-07-23 | 2004-07-23 | Distillation cooling transformer of electric locomotive |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2722400Y (en) |
-
2004
- 2004-07-23 CN CN 200420084157 patent/CN2722400Y/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |