CN202205549U - Subway-use dry-type transformer matched with pulse-width modulation rectification system - Google Patents
Subway-use dry-type transformer matched with pulse-width modulation rectification system Download PDFInfo
- Publication number
- CN202205549U CN202205549U CN2011203081784U CN201120308178U CN202205549U CN 202205549 U CN202205549 U CN 202205549U CN 2011203081784 U CN2011203081784 U CN 2011203081784U CN 201120308178 U CN201120308178 U CN 201120308178U CN 202205549 U CN202205549 U CN 202205549U
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- type transformer
- width modulation
- pulse
- clamping piece
- subway
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Abstract
A subway-use dry-type transformer matched with a pulse-width modulation rectification system for use comprises an iron core, a coil winding, an upper clamping piece, a pulling plate, and a lower clamping piece, wherein the iron core is arranged on a support base; the lower clamping piece is connected with a lower cushion block; the support base is arranged on the inner side of the lower cushion block; more than two upper cushion blocks provided with pressing nails are arranged on the coil winding and are distributed along the circumferential direction of the coil winding; and the two pressing nails are arranged along the radial direction of the coil winding. By adopting the technical scheme, the stability of the entire dry-type transformer is improved greatly; given technical indexes are reached under impact load, and the requirements on the dry-type transformer matched with the pulse-width modulation rectification system can be fully met. The utility model has the characteristics of simple and reasonable structure and good stability.
Description
Technical field
The utility model relates to a kind of dry-type transformer, and particularly a kind of subway of pulse-width modulation commutation system that cooperates is used dry-type transformer.
Background technology
At present; What the urban rail transit in China electric supply installation adopted is the diode rectification system; This diode rectification system can use till today by many decades; Its great advantage is simple, reliable, but in the today of advocating " energy-saving and emission-reduction ", it exists weak point to highlight day by day: 1) significant amount of energy feedback direct current network; 2) the output voltage fluctuation is big; 3) there is harmonic pollution in AC network.
Novel pulse-width modulation commutation system can be realized four quadrant running, and power factor is high, and harmonic current is little; And VD is controlled; Both guaranteed that direct current supply net voltage was stable, again can energy savings, be the important component part of urban rail transit in China great-leap-forward development; Also be the important embodiment of building a resource-conserving and environment-friendly society, with the developing direction that becomes future city track traffic traction power supply gradually.This formula tractive power supply system of presenting based on the pulse-width modulation commutation system requires to realize two-way admittance; Require transformer to guarantee that commutation system is reliable and stable, output voltage is steadily adjustable, reduces the harmonic pollution to electrical network; Transformer self band high impedance; Cutting the instructions for use of commutation system to commutating reactance, and equipment reduces the number of as far as possible, reduces appropriation of land.Therefore, dry-type transformer must provide safeguard for the stable of pulse-width modulation commutation system as the important component part of this pulse-width modulation commutation system.
Chinese patent document number CN201222407Y discloses a kind of transformer sheet folder structure on April 15th, 2009; Comprise upper clamping piece, lower clamping piece, arm-tie and base; Upper clamping piece, lower clamping piece are to be bent into section bar by having certain thickness steel plate, and bar hole is set on section bar; Upper clamping piece is connected through the bar shaped arm-tie that is made into by certain thickness steel plate with lower clamping piece, and lower clamping piece is connected with the base that is bent into section bar by steel plate.Through facts have proved, this transformer sheet folder structure is for the dry-type transformer that cooperates the pulse-width modulation commutation system, and is stable inadequately.
The utility model content
The purpose of the utility model aims to provide a kind of subway of cooperation pulse-width modulation commutation system of simple and reasonable, good stability and uses dry-type transformer, to overcome weak point of the prior art.
A kind of subway of pulse-width modulation commutation system that cooperates by this purpose design is used dry-type transformer; Comprise iron core and coil windings and upper clamping piece, arm-tie, lower clamping piece; Its architectural feature is that iron core is arranged on the base for supporting; Lower clamping piece and lower cushion block join, and base for supporting is arranged on the inboard of lower cushion block.
Said coil windings is provided with the last cushion block that band is pressed nail.
Said upward cushion block is more than two, along the circumferential arrangement of coil winding.
Said pressure nail is more than two, along the radial arrangement of coil winding.
The bottom central of said iron core is arranged on the base for supporting.
After the utility model adopts above-mentioned technical scheme; The main load of whole dry-type transformer is born by base for supporting; The stability of whole dry-type transformer is greatly improved; Even under shock loading, also can reach the technical indicator of regulation, can satisfy the demand of the dry-type transformer that cooperates the pulse-width modulation commutation system fully; And through to the selecting for use of arm-tie, improved the bonding strength of whole dry-type transformer, guaranteed to transport and install, the fail safe when moving.
The utlity model has characteristics simple and reasonable, good stability.
Description of drawings
Fig. 1 looks and the broken section structural representation for the master of the utility model.
Structural representation when Fig. 2 installs for the utility model.
Broken section structural representation when Fig. 3 is upper clamping piece or lower clamping piece and pin, the iron core assembling in the utility model.
Among the figure: 1 is upper clamping piece, and 2 is arm-tie, and 3 is iron core, and 4 is coil windings, and 5 is last cushion block, and 6 for pressing nail, and 7 is lower clamping piece, and 8 is base for supporting, and 9 is lower cushion block, and 10 are pin, and 11 is mounting, and A is the pin stress surface.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Referring to Fig. 1-Fig. 2; The subway of this cooperation pulse-width modulation commutation system is used dry-type transformer, comprises iron core 3 and coil windings 4 and upper clamping piece 1, arm-tie 2, lower clamping piece 7, and iron core 3 is arranged on the base for supporting 8; Lower clamping piece 7 joins with lower cushion block 9, and base for supporting 8 is arranged on the inboard of lower cushion block 9.
Said coil windings 4 is provided with the last cushion block 5 that band is pressed nail 6.Last cushion block 5 is more than two, along the circumferential arrangement of coil winding 4.Wherein, pressing nail 6 is more than two, along the radial arrangement of coil winding 4.Upper clamping piece 1 joins with arm-tie 2.
In the present embodiment, the bottom central of iron core 3 is arranged on the base for supporting 8, and lower cushion block 9 is arranged on the outside of base for supporting 8.
Referring to Fig. 3, pin 10 generally is used to connect upper clamping piece 1 and iron core 3, and connects lower clamping piece 7 and iron core 3; Upper clamping piece 1 is connected through arm-tie 2 with lower clamping piece 7.When carrying out the selecting for use of arm-tie 2, must satisfy formula :=m*g/6/s＜205MPa,
Wherein, be the tension stress of arm-tie 2 at pin 10 places;
M is the total weight of iron core 3 and coil windings 4, and unit is kg;
G is an acceleration of gravity, and unit is N/kg;
S is the conversion area of pin stress surface, s=pin diameter * arm-tie thickness, and unit is m
2
Example one, the total weight of iron core and coil windings is 4875kg, the width * thickness=80*8 (mm*mm) of arm-tie, the diameter ф=31mm of pin,
The conversion area s=31*10 of pin stress surface
-3* 8*10
-3=2.48*10
-4(m
2).
This arm-tie 2 the pin 10 places tension stress :=4875*9.8/6/ (2.48*10
-4)=32.1MPa＜205MPa meets the demands.
Example two, the total weight of iron core and coil windings is 2765kg, the width * thickness=60*6 (mm*mm) of arm-tie, the diameter ф=25mm of pin,
Conversion area=the 25*10 of pin stress surface
-3* 6*10
-3=1.5*10
-4(m
2).
This arm-tie 2 the pin 10 places tension stress :=2765*9.8/6/ (1.5*10
-4)=30.1MPa＜205MPa meets the demands.
Example three, the total weight of iron core and coil windings is 7490kg, the width * thickness=100*10 (mm*mm) of arm-tie, the diameter ф=41mm of pin,
Conversion area=the 41*10 of pin stress surface
-3* 10*10
-3=4.1*10
-4(m
2).
This arm-tie 2 the pin 10 places tension stress :=7490*9.8/6/ (4.1*10
-4)=29.8MPa＜205MPa,, meet the demands.
Claims (5)
1. one kind cooperates the subway of pulse-width modulation commutation system to use dry-type transformer; Comprise iron core (3) and coil windings (4) and upper clamping piece (1), arm-tie (2), lower clamping piece (7); It is characterized in that iron core (3) is arranged on the base for supporting (8); Lower clamping piece (7) joins with lower cushion block (9), and base for supporting (8) is arranged on the inboard of lower cushion block (9).
2. the subway of cooperation pulse-width modulation commutation system according to claim 1 is used dry-type transformer, it is characterized in that said coil windings (4) is provided with the last cushion block (5) that band is pressed nail (6).
3. the subway of cooperation pulse-width modulation commutation system according to claim 2 is used dry-type transformer, it is characterized in that said upward cushion block (5) is more than two, along the circumferential arrangement of coil winding (4).
4. use dry-type transformer according to the subway of claim 2 or 3 described cooperation pulse-width modulation commutation systems, it is characterized in that said pressure nail (6) is more than two, along the radial arrangement of coil winding (4).
5. the subway of cooperation pulse-width modulation commutation system according to claim 4 is used dry-type transformer, it is characterized in that the bottom central of said iron core (3) is arranged on the base for supporting (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203081784U CN202205549U (en) | 2011-08-23 | 2011-08-23 | Subway-use dry-type transformer matched with pulse-width modulation rectification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203081784U CN202205549U (en) | 2011-08-23 | 2011-08-23 | Subway-use dry-type transformer matched with pulse-width modulation rectification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202205549U true CN202205549U (en) | 2012-04-25 |
Family
ID=45969655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203081784U Expired - Fee Related CN202205549U (en) | 2011-08-23 | 2011-08-23 | Subway-use dry-type transformer matched with pulse-width modulation rectification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202205549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360779A (en) * | 2011-08-23 | 2012-02-22 | 顺特电气设备有限公司 | Subway dry-type transformer matched with pulse width modulation rectifying system and control method thereof |
-
2011
- 2011-08-23 CN CN2011203081784U patent/CN202205549U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360779A (en) * | 2011-08-23 | 2012-02-22 | 顺特电气设备有限公司 | Subway dry-type transformer matched with pulse width modulation rectifying system and control method thereof |
| CN102360779B (en) * | 2011-08-23 | 2013-07-31 | 顺特电气设备有限公司 | Subway dry-type transformer matched with pulse width modulation rectifying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |