CN214660378U - Optimized control system of waste heat steam turbine generator unit - Google Patents
Optimized control system of waste heat steam turbine generator unit Download PDFInfo
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- CN214660378U CN214660378U CN202120479918.4U CN202120479918U CN214660378U CN 214660378 U CN214660378 U CN 214660378U CN 202120479918 U CN202120479918 U CN 202120479918U CN 214660378 U CN214660378 U CN 214660378U
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Abstract
The utility model provides a waste heat turbo generator set's optimal control system, including steam turbine and the generator of being connected with the steam turbine, the steam turbine air inlet is equipped with pressure measurement and admits air the accent door, pressure measurement and controller electric connection, the controller control degree of accent door that admits air. The system can ensure the stable operation of the steam turbine and reduce the labor intensity of operators.
Description
Technical Field
The utility model belongs to waste heat turbo generator set's adjusting device field, in particular to waste heat turbo generator set's optimal control system.
Background
At present, the design of a machine-furnace coordination control system of a large-scale thermal power plant mainly comprises a coordination control system based on a furnace and a machine, and the coordination control mode is established on the basis of controlling pressure of a boiler and controlling power of a steam machine and has the advantage of stable load control. However, in the waste heat steam turbine generator unit, firstly, heat supply is ensured, and redundant heat energy is used for generating electricity. Because the gas load is unstable, the steam turbine can not be put into power control, manual control is basically adopted at present, the labor intensity of operators is high, the pressure in front of a main valve can not be stably controlled, the fluctuation of production process parameters is large, and the waste heat recovery efficiency is reduced.
Disclosure of Invention
The utility model aims to solve the technical problem that a waste heat turbo generator set's optimal control system is provided, can guarantee the steady operation of steam turbine, reduced operating personnel intensity of labour.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a waste heat turbo generator set's optimal control system, includes steam turbine and the generator of being connected with the steam turbine, the steam turbine air inlet is equipped with pressure measurement and admits air the transfer valve, pressure measurement and controller electric connection, the aperture of controller control admission transfer valve.
In a preferable scheme, an air inlet of the air inlet adjusting valve is connected with a main steam switch valve through a pipeline.
In a preferred scheme, the generator is electrically connected with the power detection device, and the power detection device is electrically connected with the controller.
The utility model provides a pair of waste heat turbo generator set's optimal control system detects the admission pressure of steam turbine through pressure measurement device, sets for steam turbine inlet pressure target value through the controller to set up steam turbine inlet pressure lower limit value and steam turbine inlet pressure upper limit value, through pressure limit value automatically regulated admission control door, make steam turbine inlet pressure stable, reduced operating personnel intensity of labour, the rate of rise waste heat recovery efficiency. The maximum value of the load of the generator is ensured through the power detection device, and the overload work of the generator is prevented.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a control flow chart of the present invention;
in the figure: the system comprises a steam turbine 1, a generator 2, a pressure detection device 3, an air inlet valve 4, a controller 5, a main steam switch valve 6 and a power detection device 7.
Detailed Description
As shown in fig. 1, the optimized control system of the waste heat steam turbine generator unit comprises a steam turbine 1 and a generator 2 connected with the steam turbine 1, wherein a pressure detection device 3 and an air inlet damper 4 are arranged at an air inlet of the steam turbine 1, the pressure detection device 3 is electrically connected with a controller 5, the pressure detection device 3 can be an EJA430E-JB1G-330DC pressure transmitter, the controller 5 is a siemens S7-312C (6ES7 312-5BD01-0AB0) controller, and the controller 5 controls the opening degree of the air inlet damper 4.
When the device is used specifically, preheated steam enters the steam turbine 1 to do work, the main shaft drives the generator to generate power, the steam inlet pressure of the steam turbine 1 is detected through the pressure detection device 3, the target value of the inlet pressure of the steam turbine is set through the controller 5, the lower limit value of the inlet pressure of the steam turbine and the upper limit value of the inlet pressure of the steam turbine are set, and the air inlet regulating valve 4 is automatically adjusted through the pressure limit value, so that the inlet pressure of the steam turbine is stable, the labor intensity of operators is reduced, and the waste heat recovery efficiency is improved.
Preferably, an air inlet of the air inlet valve 4 is connected with a main steam switch valve 6 through a pipeline.
The on-off of the whole steam supply is conveniently controlled through the main steam switch valve 6.
Preferably, the generator 2 is electrically connected to the power detection device 7, and the power detection device 7 is electrically connected to the controller 5. The power detection device 7 can be a PCS-988P generator power transmission device of the Nanrui relay protection.
Through setting up power detection device 7, conveniently detect the generated power of generator, prevent that generator 2 from the operation of overload.
As shown in fig. 2, when the pressure value of the pressure detection device 3 is lower than the lower limit value of the turbine inlet pressure, a deviation Δ P exists between the real-time value of the turbine inlet pressure and the target value of the turbine inlet pressure, and the intake air damper 4 is closed by Δ P × α by adjusting the coefficient α;
when the pressure value of the monitoring pressure detection device 3 is higher than the upper limit value of the turbine inlet pressure, the deviation delta P exists between the real-time value of the turbine inlet pressure and the target value of the turbine inlet pressure, and the air inlet adjusting valve 4 is opened by delta P alpha by adjusting the coefficient alpha.
When the pressure value of the pressure detection device 3 is between the upper limit value and the lower limit value, the air inlet regulating valve 4 is not adjusted, and the stable operation of the steam turbine is ensured.
During the adjustment process, it is first determined that the generator is not operating in overload. By comparing the power generation power of the monitoring generator 2 with the rated power of the generator, when the power generation power of the monitoring generator 2 is found to exceed the rated power of the generator, the air inlet throttle 4 is closed by 1%, and the stable work of the generator is ensured.
The adjusting speed of the turbine air inlet adjusting valve can be adjusted by correcting the adjusting coefficient alpha, and the turbine air inlet adjusting valve can be quickly adjusted when the pressure of the turbine inlet fluctuates greatly by matching with the upper limit value and the lower limit value of the pressure of the turbine inlet, so that the stability of the pressure of the turbine inlet is ensured.
Claims (3)
1. The utility model provides a waste heat turbo generator set's optimal control system, includes steam turbine (1) and generator (2) of being connected with steam turbine (1), its characterized in that: the steam turbine (1) air inlet is equipped with pressure measurement (3) and air inlet valve (4), and pressure measurement (3) and controller (5) electric connection, the aperture of controller (5) control air inlet valve (4).
2. The optimized control system of the waste heat steam turbine generator unit according to claim 1, characterized in that: and an air inlet of the air inlet adjusting valve (4) is connected with a main steam switch valve (6) through a pipeline.
3. The optimized control system of the waste heat steam turbine generator unit according to claim 1, characterized in that: the generator (2) is electrically connected with the power detection device (7), and the power detection device (7) is electrically connected with the controller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479918.4U CN214660378U (en) | 2021-03-05 | 2021-03-05 | Optimized control system of waste heat steam turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479918.4U CN214660378U (en) | 2021-03-05 | 2021-03-05 | Optimized control system of waste heat steam turbine generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660378U true CN214660378U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120479918.4U Active CN214660378U (en) | 2021-03-05 | 2021-03-05 | Optimized control system of waste heat steam turbine generator unit |
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| CN (1) | CN214660378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977747A (en) * | 2022-07-23 | 2023-04-18 | 江苏省镔鑫钢铁集团有限公司 | Power generation device and method capable of reducing shutdown of steam turbine with sintering waste heat |
-
2021
- 2021-03-05 CN CN202120479918.4U patent/CN214660378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977747A (en) * | 2022-07-23 | 2023-04-18 | 江苏省镔鑫钢铁集团有限公司 | Power generation device and method capable of reducing shutdown of steam turbine with sintering waste heat |
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