CN207499912U - Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system - Google Patents
Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system Download PDFInfo
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- CN207499912U CN207499912U CN201721556536.7U CN201721556536U CN207499912U CN 207499912 U CN207499912 U CN 207499912U CN 201721556536 U CN201721556536 U CN 201721556536U CN 207499912 U CN207499912 U CN 207499912U
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- steam turbine
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- introduced machine
- control system
- power plant
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Abstract
The utility model is related to steam turbine technology fields.Purpose is to provide a kind of steam turbine of thermal power plant dragging asynchronous machine and air-introduced machine control system, which should have the characteristics that startup is quick, simple in structure, maintenance cost is low.Technical solution is：Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system, it is characterised in that：The system includes the servo valve being arranged on steam turbine steam inlet pipe, the speed probe being arranged on steam turbine and the rotating speed PID controller of connection servo valve and speed probe, the speed change clutch being connected in turn between steam turbine and air-introduced machine and asynchronous electric generator.
Description
Technical field
The utility model is related to steam turbine technology field, specifically a kind of steam turbine of thermal power plant dragging asynchronous machine and air inducing
Machine control system.
Background technology
Further with Environmental protective energy conservation emission reduction is paid attention to and implements, and the boiler induced-draft fan of most of power plant is
Through the Steam Turbine Driven mode that original motor drive mode is gradually upgraded to mainstream；Its operation principle is as shown in Figure 2：Steamer
Machine C power driving air-introduced machine B operatings, air-introduced machine after gear-box D decelerations extract the flue gas in boiler so as to maintain boiler out
Negative pressure, the flue gas of extraction are admitted to desulphurization system or are drained into chimney, and the air door on air-introduced machine is used to ensure boiler draft.
To ensure the rated speed of air-introduced machine, steam turbine is unable to standard-sized sheet into vapour tune valve A, thus it is fully sharp to limit waste heat
With；Meanwhile steam turbine must carry out warming-up on startup, in case of emergency air-introduced machine cannot come into operation immediately, and new
Production cost can then be increased for emergency start by increasing spare electric fan.
Utility model content
The purpose of the utility model is to overcome the deficiencies in above-mentioned background technology, and it is different to provide a kind of steam turbine of thermal power plant dragging
Motor and air-introduced machine control system are walked, which should have the characteristics that startup is quick, simple in structure, maintenance cost is low.
The technical solution of the utility model is：
Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system, it is characterised in that：The system includes being arranged on
Servo valve on steam turbine steam inlet pipe, the speed probe being arranged on steam turbine and connection servo valve and revolution speed sensing
The rotating speed PID controller of device, the speed change clutch being connected in turn between steam turbine and air-introduced machine and asynchronous electric generator.
The clutch connection steam turbine of the speed change clutch, the reduction box connection asynchronous electric power generation of speed change clutch
Machine.
The signal input part connection speed probe and control terminal connection servo valve of the rotating speed PID controller.
The beneficial effects of the utility model are：
The asynchronous electric generator of the utility model can between electric motor mode and generator mode no-harass switch, make
It obtains air-introduced machine to work in the case where pure eDrive state, vapour electricity combination drive state, vapour drive generating state, pure vapour drive state respectively, fill
Divide and waste heat is utilized, also solve the problem of steam turbine start-up course is long；Meanwhile rotating speed PID controller is as control system
Core using component is few, wiring is simple, construction debugging is convenient and time-saving, can save the operating cost of factory.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of existing air-introduced machine control system.
Specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model be not limited to
Lower embodiment.
As shown in Figure 1, steam turbine of thermal power plant dragging asynchronous machine and air-introduced machine control system, including servo valve A, rotating speed
Sensor 2, rotating speed PID controller 1, speed change clutch F and asynchronous electric generator E.
The servo valve is arranged on steam turbine steam inlet pipe, and speed probe is arranged on steam turbine, rotating speed PID control
The signal input part connection speed probe and control terminal connection servo valve of device.The speed change clutch is sent out with asynchronous electric
Motor is connected in turn between steam turbine and air-introduced machine, and the clutch connection steam turbine of speed change clutch, speed change clutch subtracts
Fast case connects asynchronous electric generator.
The range of speeds of the asynchronous electric generator is 747~753rpm.Unit nominal situation, steam turbine steam inlet condition
For：Pressure 10.6MPa (a), 535 DEG C, exhaust steam pressure 1.49MPa (a), steam turbine rated speed 7702r/min of temperature, steam turbine
Rated output power 9250kW.Pressure into vapour vapour source is 11.3MPa and temperature is 538 DEG C.
The operation principle of the utility model is：Asynchronous electric generator (electric motor mode) drives air-introduced machine fortune during startup
Row, the clutch of speed change clutch are in disengaged condition, and steam turbine does not follow rotation；After steam parameter meets, steam turbine is pressed
Near red switch rate raising speed to synchronous rotational speed, air-introduced machine is by asynchronous electric generator before the clutch engagement of speed change clutch
(electric motor mode) drives；Steam turbine is by being incorporated to rate raising speed, the clutch engagement of speed change clutch, steam turbine and speed change clutch
Device, air-introduced machine and axis operation；Steam Turhine Adjustment steam valve continues out big (until standard-sized sheet) and rotating speed rises, at this time steam turbine with it is different
Walk dynamotor combination drive air-introduced machine；When turbine speed continues to rise and is more than synchronous rotational speed, asynchronous electric generator
It is run with generator mode, asynchronous electric generator is driven to be run with air-introduced machine simultaneously for steam turbine at this time, steam turbine is had more than needed
Power, which is converted by asynchronous electric generator after electric energy, to be sent to dissolving in station service electrical system；When insufficient, the turbine speed into vapour
When declining and being less than synchronous rotational speed, asynchronous electric generator is run with electric motor mode, and asynchronous electric generator and steam turbine are same
When driving air-introduced machine operation；When turbine speed is less than the driving rotating speed of asynchronous electric generator (electric motor mode), steam turbine
It is detached from asynchronous electric generator, air-introduced machine operation is operated alone by asynchronous electric generator；Steam Turhine Adjustment steam valve is according to warm
Load (heating load+auxiliary vapour dosage+oxygen-eliminating device dosage) adjusts steam flow, and air-introduced machine movable vane controls air quantity, and in entire shafting
Unbalanced power is then responsible for balance by asynchronous electric generator.
The equal buyable of the rotating speed PID controller, speed probe, speed change clutch, asynchronous electric generator obtains, interior
The control program and operation principle in portion are routine techniques, are not described in detail herein.
Finally it should be noted that listed above is only specific embodiment of the utility model.Obviously, this practicality is new
Type is not limited to above example, can also there is many variations.Those of ordinary skill in the art can be from disclosed in the utility model
All deformations for directly exporting or associating in content, are considered as the scope of protection of the utility model.
Claims (3)
1. steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system, it is characterised in that：The system includes being arranged on vapour
Servo valve (A) on turbine steam inlet pipe, the speed probe (2) being arranged on steam turbine and connection servo valve and rotating speed
The rotating speed PID controller (1) of sensor, the speed change clutch (F) being connected in turn between steam turbine and air-introduced machine and asynchronous electricity
Dynamic generator (E).
2. steam turbine of thermal power plant dragging asynchronous machine according to claim 1 and air-introduced machine control system, it is characterised in that：
The clutch connection steam turbine of the speed change clutch, the reduction box connection asynchronous electric generator of speed change clutch.
3. steam turbine of thermal power plant dragging asynchronous machine according to claim 2 and air-introduced machine control system, it is characterised in that：
The signal input part connection speed probe and control terminal connection servo valve of the rotating speed PID controller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556536.7U CN207499912U (en) | 2017-11-20 | 2017-11-20 | Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556536.7U CN207499912U (en) | 2017-11-20 | 2017-11-20 | Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207499912U true CN207499912U (en) | 2018-06-15 |
Family
ID=62505470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721556536.7U Expired - Fee Related CN207499912U (en) | 2017-11-20 | 2017-11-20 | Steam turbine of thermal power plant drags asynchronous machine and air-introduced machine control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207499912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814915A (en) * | 2023-02-14 | 2023-03-21 | 山东埃尔派粉体科技有限公司 | Particle size regulating and controlling method of jet mill |
-
2017
- 2017-11-20 CN CN201721556536.7U patent/CN207499912U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814915A (en) * | 2023-02-14 | 2023-03-21 | 山东埃尔派粉体科技有限公司 | Particle size regulating and controlling method of jet mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20211120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |