CN2681452Y - Brushless excitation for steam turbo generator - Google Patents
Brushless excitation for steam turbo generator Download PDFInfo
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- CN2681452Y CN2681452Y CN 200420033158 CN200420033158U CN2681452Y CN 2681452 Y CN2681452 Y CN 2681452Y CN 200420033158 CN200420033158 CN 200420033158 CN 200420033158 U CN200420033158 U CN 200420033158U CN 2681452 Y CN2681452 Y CN 2681452Y
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- winding
- turbo generator
- excitation
- generator
- steam turbo
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Abstract
The utility model discloses a brushless excitation for a steam turbo generator with no environmental pollution and no ring fire. The brushless excitation for the steam turbo generator is characterized in that: A) the mechanical structure of the steam turbo generator is composed of a steam turbo generator rotor, a winding 1 thereof, a steam turbo generator stator and a winding 2 thereof, and the back bearing 3 of the steam turbo generator is positioned between the steam turbo generator and an AC excitation stator 4 and between an AC excitation armature 5 and a rectifier device 6; B) one head of the steam turbo generator rotor and the winding 1 is a steam turbo generator terminal, and the other head is concentric and coaxial with the AC exciter armature 5 passing through the back bearing 3 of the steam turbo generator; C) an electricity structure comprises two pairs of windings: a winding JLD and a winding JLS, a winding TFL and a winding TFD, and a rectifier TXZ and a control device LK which are between the two pairs of windings.
Description
Technical field
The utility model relates to a kind of electronic product, particularly a kind of turbo generator brushless excitation that is driven by steam turbine.
Technical background
Turbo generator is the latent level formula synchronous generator that is dragged by steam turbine, its rated speed 3000r/min, adjustment along with national energy policy, pure middle-size and small-size power station is banned, but encourages middle-size and small-size turbo generator to be used for the project that cogeneration, central heating, cogeneration, treatment of urban garbage etc. have environment protection significance.This just further improves the specification requirement of generator, and existing generator excitation mode mainly contains coaxial excitation, stationary silicon controlled field, three kinds of modes of brushless excitation.
Coaxial excitation is a kind of early stage excitation mode, and it is with low content of technology, and the operation maintenance amount is big, failure rate height, less at present employing.Though stationary silicon controlled field has been cancelled exciter, have characteristics such as little, the easy adjusting of maintenance, the reliable maturation of technology, but provide field power supply for generator amature owing to still adopt by collector ring, still can't fundamentally solve the ring fire problem that the environmental pollution that causes because of carbon brush wearing and tearing and collector ring produce, cause many extremely importantly and environmental requirement is higher, can not use as military, R﹠D institution.
Summary of the invention
Non-environmental-pollution and collector ring did not have the turbo generator brushless excitation that ring fire produces when the purpose of this utility model was to disclose a kind of easy maintenance, advanced technology, reliably maturation, and use.
The technical scheme that adopts for achieving the above object is
The turbo generator that mechanical structure of the present utility model is made of rotor of steam turbo generator and winding 1 thereof and stator of steam turbine generator and winding 2 thereof, and turbo generator rear bearing 3 is positioned at the centre of turbo generator and AC excitation stator 4, AC excitation armature 5 and rectifying device 6; One of the central shaft of rotor of steam turbo generator and winding 1 thereof is the steam turbine terminal, and turbo generator rear bearing 3 is passed in the other end, with AC exciter armature 5 concentric, coaxial formations.As shown in Figure 1.
The utility model electrical structure is first pair of winding by AC exciter stator winding JLD and exciter armature winding JLS, excitation winding TFL and Stator Coil TFD are second pair of winding, and are connected with excitation controlling device LK by coaxial rotating rectifier TXZ between the two pairs of windings and form.As shown in Figure 3.
Described coaxial rotating rectifier TXZ between AC exciter armature winding JLS and turbo generator excitation winding JFL, has (U, V, W) triple line to go here and there middle connection of rectifier diode of contacting and connecing with three respectively, and the resistor-capacitor unit and the L of series connection arranged
2End (positive pole) and L
1End (negative pole) also connects.As shown in Figure 4.
(U, V, W) three-phase output end of Stator Coil TFD, wired excitation controlling device LK that is linked into, excitation controlling device LK have output line also to connect with AC exciter stator winding JLD.AC exciter stator winding JLD has non-contact type monitoring coil JC that the AC exciter stator winding JLD signal of sensing is input to excitation controlling device LK.Shown in Fig. 3,4.
This brushless excitation operation principle is: turbo generator is under the driving of steam turbine, with the constant rotation of synchronous speed, supply with the certain exciting current of AC exciter by excitation unit, produce a stationary magnetic field, the rotating armature of AC exciter induces symmetrical electromotive force, through the rotating rectifier rectification, will exchange electromotive force and become DC potential for generator amature excitation winding excitation, the generator unit stator winding just induces three symmetrical electromotive forces.The variation of generator loading will cause the variation of generator voltage, and keeping the constant of terminal voltage is by excitation unit the control of supplying with the AC exciter exciting current to be realized that the mode of generator excitation is based on the residual voltage excitation, and it is auxilliary providing DC power supply for oneself.Brushless excitation system mainly is made up of four parts such as AC exciter, rotating rectifier, thyristor excitation device, brushless synchronous machine exciter monitors, and its systematic schematic diagram sees Fig. 2 for details.In addition, in this circuit, be bold in innovation, adopted " contactless " detection rotor electric current, voltage, rectifier cell and silicon controlled operation conditions etc.
The AC exciter operation principle
AC exciter mainly is made up of stator, rotating armature, signal coil etc., and after the AC exciter stator winding is imported certain exciting current, rotating armature will induce a rotating rectifier that exchanges electromotive force and directly flow to coaxial rotation.Rotating rectifier work operation logic is that the interchange electromotive force that the three-phase rotating armature winding of AC exciter is responded to is transferred on the three-phase commutation bridge, and rectifier bridge will exchange electromotive force and change DC potential into, resupply generator amature excitation winding excitation.Rotating diode in the rotating rectifier, resistance, electric capacity and fuse all are installed on the rotating ring.For preventing overvoltage or overcurrent breakdown diode, every brachium pontis adopts two diodes series connection, with guarantee when one breakdown after circuit can also operate as normal; For preventing that rotor of steam turbo generator step-out (or stator terminal shortcircuit) from producing overvoltage in the rotor-exciting winding, the rotary rectifier loop also is provided with rc protection circuit.The rotating rectifier fundamental diagram is seen Fig. 4.
Advantage of the present utility model is:
Along with the development of modern electronic technology and the raising of customer requirements, brushless excitation begins to be applied to middle-size and small-size turbo generator as a kind of advanced person's excitation mode.Its main feature is to have cancelled collector ring and carbon brush, is particularly useful for having anti-exposing to the sun and the occasion of fire protection requirement, and no dust pollution; This system has advanced person, characteristics such as stable, reliable, has especially adopted the monitoring of " contactless " detection rotor electric current, voltage, rectifier cell and silicon controlled operation conditions.
Embodiment
Description of drawings
Fig. 1 is turbo generator brushless excitation shape and structural representation.
Fig. 2 is a turbo generator brushless excitation shape and structure end view.
Fig. 3 is turbo generator brushless excitation operation logic figure.
Fig. 4 is the coaxial rotating excitation schematic diagram of turbo generator.
Wherein: 1, rotor of steam turbo generator; 2, stator of steam turbine generator; 3, turbo generator rear bearing; 4, AC excitation stator; 5, AC exciter armature; 6, rectifying device; 7, floor; 8, turbo generator lead-out terminal;
Code name: JLD, AC exciter stator winding; JLS, AC exciter armature winding; TFL, turbo generator excitation winding; TFD, Stator Coil; TXZ, coaxial rotating rectifier; LK, excitation controlling device; JC, magnetic test coil.
Embodiment
As shown in Figure 1.The turbo generator that mechanical structure of the present utility model is made of rotor of steam turbo generator and winding 1 thereof and stator of steam turbine generator and winding 2 thereof mechanical structure, and turbo generator rear bearing 3 is positioned at the centre of turbo generator and AC excitation stator 4, AC excitation armature 5 and rectifying device 6; 1 one of rotor of steam turbo generator and windings thereof are the steam turbine terminal, and turbo generator rear bearing 3 is passed in the other end, with AC exciter armature 5 concentric, coaxial formations.
As shown in Figure 3.The utility model electrical structure is first pair of winding by AC exciter stator winding JLD and exciter armature winding JLS, turbo generator excitation winding TFL and Stator Coil TFD are second pair of winding, and are connected with excitation controlling device LK by coaxial rotating rectifier TXZ between the two pairs of windings and form.
As shown in Figure 4.Described coaxial rotating rectifier TXZ has (U, V, W) triple line to go here and there middle connection of rectifier diode D of contacting and connecing with three respectively between AC exciter armature winding JLS and turbo generator excitation winding TFL, and the resistor-capacitor unit and the L of series connection arranged
2End (positive pole) and L
1End (negative pole) also connects.
Shown in Fig. 3,4.(U, V, W) three-phase output end of Stator Coil TFD, wired excitation controlling device LK that is linked into, excitation controlling device LK have output line also to connect with AC exciter stator winding JLD.AC exciter stator winding JLD has non-contact type monitoring coil JC that the AC exciter stator winding JLD signal of sensing is input to excitation controlling device LK.
Excitation controlling device LK is microcomputer (single board computer).
Claims (3)
1, a kind of non-environmental-pollution and do not have the turbo generator brushless excitation that ring fire produces is characterized in that:
A) turbo generator that constituted by rotor of steam turbo generator and winding (1) thereof and stator of steam turbine generator and winding (2) thereof of mechanical structure, and turbo generator rear bearing (3) is positioned at the centre of turbo generator and AC excitation stator (4), AC excitation armature (5) and rectifying device (6);
B) (1) one of rotor of steam turbo generator and winding thereof are the steam turbine terminal, and turbo generator rear bearing (3) is passed in the other end, and be concentric, coaxial with AC exciter armature (5);
C) electrical structure is by winding JLD and winding JLS, and winding TFL and two pairs of windings of winding TFD, and is made up of rectifier TXZ and control device LK between two pairs of windings.
2, turbo generator brushless excitation according to claim 1, it is characterized in that: the described coaxial rotating rectifier TXZ of electrical structure, between winding JLS and winding JFL, there is triple line to connect with the rectifier diode D centre that 3 string polyphones connect respectively, the resistor-capacitor unit and the L of series connection arranged
2End and L
1End also connects.
3, turbo generator brushless excitation according to claim 1 is characterized in that:
A) three-phase output end of Stator Coil TFD, wired access control apparatus LK, control device LK have output line also to connect with winding JLD;
B) winding JLD has non-contact type coil JC holding wire access control apparatus LK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033158 CN2681452Y (en) | 2004-03-09 | 2004-03-09 | Brushless excitation for steam turbo generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033158 CN2681452Y (en) | 2004-03-09 | 2004-03-09 | Brushless excitation for steam turbo generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681452Y true CN2681452Y (en) | 2005-02-23 |
Family
ID=34607393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420033158 Expired - Fee Related CN2681452Y (en) | 2004-03-09 | 2004-03-09 | Brushless excitation for steam turbo generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681452Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877969B (en) * | 2006-07-03 | 2010-05-12 | 四川东风电机厂有限公司 | Gas turbine generator |
| CN103401326A (en) * | 2013-07-31 | 2013-11-20 | 东方电气集团东风电机有限公司 | 60Hz full-rotation-speed turbine generator |
| CN105978424A (en) * | 2016-05-11 | 2016-09-28 | 株洲中车时代电气股份有限公司 | Excitation chopper |
-
2004
- 2004-03-09 CN CN 200420033158 patent/CN2681452Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877969B (en) * | 2006-07-03 | 2010-05-12 | 四川东风电机厂有限公司 | Gas turbine generator |
| CN103401326A (en) * | 2013-07-31 | 2013-11-20 | 东方电气集团东风电机有限公司 | 60Hz full-rotation-speed turbine generator |
| CN103401326B (en) * | 2013-07-31 | 2015-09-23 | 东方电气集团东风电机有限公司 | The full rotation-speed steam turbine generator of 60Hz |
| CN105978424A (en) * | 2016-05-11 | 2016-09-28 | 株洲中车时代电气股份有限公司 | Excitation chopper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050223 Termination date: 20110309 |