CN106837436A - Turbine by-pass control system and control method with voltage stabilizing function - Google Patents
Turbine by-pass control system and control method with voltage stabilizing function Download PDFInfo
- Publication number
- CN106837436A CN106837436A CN201510879428.2A CN201510879428A CN106837436A CN 106837436 A CN106837436 A CN 106837436A CN 201510879428 A CN201510879428 A CN 201510879428A CN 106837436 A CN106837436 A CN 106837436A
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- China
- Prior art keywords
- pressure
- valve
- low
- turbine
- connection
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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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
- F01D17/085—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure to temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Turbines (AREA)
Abstract
A kind of turbine by-pass control system and control method with voltage stabilizing function.Steam turbine is combustion gas
-
One of main equipment that steam combined cycle power generating engineering generates electricity, is rotating mechanical energy using the thermal energy of steam.
A kind of turbine by-pass control system with voltage stabilizing function, its composition includes：Boiler
(1)
, boiler respectively with high pressure cylinder
(2)
, intermediate pressure cylinder
(3)
Connection, intermediate pressure cylinder and low pressure (LP) cylinder
(4)
Connection, low pressure (LP) cylinder and condenser
(5)
Connection, condenser bottom and condensate pump
(12)
Connection, condensate pump and solidifying water demineralizer
(11)
Connection, coagulates water demineralizer and booster
(10)
Connection, booster and low-pressure heater
(9)
Connection, low-pressure heater and oxygen-eliminating device
(6)
Connection, oxygen-eliminating device and feed pump
(8)
Connection, feed pump and high-pressure heater
(7)
Connection, high-pressure heater is connected with described boiler.Present invention application and electric turbine.
Description
Technical field：
The present invention relates to a kind of turbine by-pass control system and control method with voltage stabilizing function.
Background technology：
Steam turbine is combustion gas
-
One of main equipment that steam combined cycle power generating engineering generates electricity; it is rotating mechanical energy using the thermal energy of steam; because steam turbine power generation unit runs while high speed rotates under HTHP again, therefore turbine control system chain control, protect significant.
Steam turbine system is used
DCS
System is controlled, main detection including steam turbine vapour system pressure, temperature etc., bypath system,
EH
Oil system, lubricating oil system, condensate system, the detection of vacuum system and relevant control.The bypath system of steam turbine is high-low pressure train, can accelerate the cyclic process of working medium during unit starting, improves intensification, the rate of rise of unit, and controls the aperture of pressure-reducing valve to make the system will not superpressure according to pressure set points.The safe operation of unit can effectively be ensured in load rejection, various automatic protection equipment are typically provided with steam turbine.When operational factor exceedes the scope that unit safety operation is allowed, it will be acted in time, make steam turbine autostop, it is to avoid the further expansion of accident.Bypath system device is the important equipment of generating set, and the reliability of bypath system equipment is larger on power plant safety and economical operation influence, it assures that heat power equipment starts and operation safety；Extend the service life of unit as far as possible；Improve the overall economic efficiency of unit.
The content of the invention：
It is an object of the invention to provide a kind of turbine by-pass control system and control method with voltage stabilizing function.
Above-mentioned purpose is realized by following technical scheme：
A kind of turbine by-pass control system with voltage stabilizing function, its composition includes：Boiler, it is characterized in that：Described boiler is connected with high pressure cylinder, intermediate pressure cylinder respectively, and described intermediate pressure cylinder is connected with low pressure (LP) cylinder, and described low pressure (LP) cylinder is connected with condenser, described condenser bottom and condensate pump（Connection, described condensate pump is connected with solidifying water demineralizer, described solidifying water demineralizer is connected with booster, described booster is connected with low-pressure heater, described low-pressure heater is connected with oxygen-eliminating device, described oxygen-eliminating device is connected with feed pump, and described feed pump is connected with high-pressure heater, and described high-pressure heater is connected with described boiler.
The described turbine by-pass control system with voltage stabilizing function, there is side valve high between described boiler and described high pressure cylinder, described side valve high is connected with height spray valve, described spray valve high is connected with height spray isolating valve, and the other end of described spray isolating valve high is connected between described feed pump and described high-pressure heater.
The described turbine by-pass control system with voltage stabilizing function, there is low side valve between described boiler and described intermediate pressure cylinder, described low side valve is connected with described condenser and low spray valve respectively, described low spray valve is connected with low pressure irrigation pressure switch one, described low pressure irrigation pressure switch one is connected with low pressure water spray switch two, described low pressure water spray switch two is connected with three-level water injection valve, and described three-level water injection valve is connected with described condenser.
The described turbine by-pass control system with voltage stabilizing function, described low pressure water spray switch one, described low pressure water spray switch two is connected with described low-pressure heater and described booster respectively.
The control method of the described turbine by-pass control system with voltage stabilizing function, the method comprises the following steps：
Unit is starting, normal operation, under removal of load operating mode, each valve（Height spray valve, low spray valve, three-level water injection valve automatic or manual（Straighforward operation）Carrying out quickly start, can guarantee that when main vapour, reheated steam operating pressure, temperature exceed setting range when, shunting device（Side valve high, low side valve）Can be automatically opened or closed, and carry out pressure, temperature automatic adjustment by unit operation situation, until recovering normal value, when the pressure or temperature of steam are higher than the operating pressure for setting, can open in time, bleed off a part of steam, so as to ensure the pressure stability for entering main inlet throttle-stop valve in certain scope, steam into bypass eventually enters into condenser, because vapor (steam) temperature is higher, two grades of desuperheats are provided with bypath system, when some technological parameters are unsatisfactory in system, corresponding opening soon or quick closing valve action is produced.
Beneficial effects of the present invention：
（1 ）The present invention disclosure satisfy that unit starting, normal operation, under removal of load operating mode, each valve automatic or manual（Straighforward operation）Carrying out quickly start.Can guarantee that shunting device can be automatically opened or closed, and carry out pressure, temperature automatic adjustment by unit operation situation, until recovering normal value when main vapour, reheated steam operating pressure, temperature exceed setting range.
（
2
）When the present invention ensures the pressure or temperature of initial steam higher than the operating pressure for setting, can in time open, bleed off a part of steam, so as to ensure the pressure stability for entering main inlet throttle-stop valve in certain scope.Steam into bypass eventually enters into condenser, because vapor (steam) temperature is higher, two grades of desuperheats is provided with bypath system.In addition, having interlocking in bypath system, when some technological parameters are unsatisfactory in system, corresponding opening soon or quick closing valve action is produced.
（
3
）Startup function of the invention：The purpose is to what is set to improve the starting characteristic of unit.Combustion rate of the boiler in start-up course can be improved；Vapor (steam) temperature is set to obtain best match with cylinder of steam turbine temperature；So as to shorten the time of unit starting, life consumption is reduced.Relief function：What its purpose was actually set for the uncompensated load between absorption machine, stove.Residual steam of the unit in load transition transitional processes can be drained；The stable pressure of trying to make a good showing of adjustment；Maintain minimum steady combustion load of the boiler in the case of oil is not thrown.Security function：Replace the function of boiler safety valve.After unit bypath system input is standby, when actual pressure is more than bypass superpressure bias set value with unit high pressure turbine by pressure set points difference before the machine of unit, bypath system will automatically participate in pressure regulation, maintain main steam pressure to be equal to setting value.
Brief description of the drawings：
Accompanying drawing
1
It is structural representation of the invention.
Specific embodiment：
Embodiment
1
：
A kind of turbine by-pass control system with voltage stabilizing function, its composition includes：Boiler
1
, described boiler respectively with high pressure cylinder
2
, intermediate pressure cylinder
3
Connection, described intermediate pressure cylinder and low pressure (LP) cylinder
4
Connection, described low pressure (LP) cylinder and condenser
5
Connection, described condenser bottom and condensate pump
12
Connection, described condensate pump and solidifying water demineralizer
11
Connection, described solidifying water demineralizer and booster
10
Connection, described booster and low-pressure heater
9
Connection, described low-pressure heater and oxygen-eliminating device
6
Connection, described oxygen-eliminating device and feed pump
8
Connection, described feed pump and high-pressure heater
7
Connection, described high-pressure heater is connected with described boiler.
Embodiment
2
：
According to embodiment
1
The described turbine by-pass control system with voltage stabilizing function, has side valve high between described boiler and described high pressure cylinder
15
, described side valve high and spray valve high
13
Connection, described spray valve high and spray isolating valve high
20
Connection, the other end of described spray isolating valve high is connected between described feed pump and described high-pressure heater.
Embodiment
3
：
According to embodiment
1
Or
2
The described turbine by-pass control system with voltage stabilizing function, has low side valve between described boiler and described intermediate pressure cylinder
14
, described low side valve respectively with described condenser and low spray valve
17
Connection, described low spray valve and low pressure irrigation pressure switch one
18
Connection, described low pressure irrigation pressure switch one and low pressure water spray switch two
19
Connection, described low pressure water spray switch two and three-level water injection valve
16
Connection, described three-level water injection valve is connected with described condenser.
Embodiment
4
：
According to embodiment
1
Or
2
Or
3
The described turbine by-pass control system with voltage stabilizing function, described low pressure water spray switch one, described low pressure water spray switch two is connected with described low-pressure heater and described booster respectively.
Embodiment
5
：
A kind of embodiment
1
—
4
One of the described turbine by-pass control system with voltage stabilizing function control method, the method comprises the following steps：
Unit is starting, normal operation, under removal of load operating mode, each valve（Height spray valve, low spray valve, three-level water injection valve automatic or manual（Straighforward operation）Carrying out quickly start, can guarantee that when main vapour, reheated steam operating pressure, temperature exceed setting range when, shunting device（Side valve high, low side valve）Can be automatically opened or closed, and carry out pressure, temperature automatic adjustment by unit operation situation, until recovering normal value, when the pressure or temperature of steam are higher than the operating pressure for setting, can open in time, bleed off a part of steam, so as to ensure the pressure stability for entering main inlet throttle-stop valve in certain scope, steam into bypass eventually enters into condenser, because vapor (steam) temperature is higher, two grades of desuperheats are provided with bypath system, when some technological parameters are unsatisfactory in system, corresponding opening soon or quick closing valve action is produced.
Claims (5)
1. a kind of turbine by-pass control system with voltage stabilizing function, its composition includes：Boiler, it is characterized in that：Described boiler is connected with high pressure cylinder, intermediate pressure cylinder respectively, described intermediate pressure cylinder is connected with low pressure (LP) cylinder, described low pressure (LP) cylinder is connected with condenser, described condenser bottom is connected with condensate pump, described condensate pump is connected with solidifying water demineralizer, described solidifying water demineralizer is connected with booster, described booster is connected with low-pressure heater, described low-pressure heater is connected with oxygen-eliminating device, described oxygen-eliminating device is connected with feed pump, described feed pump is connected with high-pressure heater, and described high-pressure heater is connected with described boiler.
2. the turbine by-pass control system with voltage stabilizing function according to claim 1, it is characterized in that：There is side valve high, described side valve high is connected with height spray valve, and described spray valve high is connected with height spray isolating valve, and the other end of described spray isolating valve high is connected between described feed pump and described high-pressure heater between described boiler and described high pressure cylinder.
3. the turbine by-pass control system with voltage stabilizing function according to claim 1 and 2, it is characterized in that：There is low side valve between described boiler and described intermediate pressure cylinder, described low side valve is connected with described condenser and low spray valve respectively, described low spray valve is connected with low pressure irrigation pressure switch one, described low pressure irrigation pressure switch one is connected with low pressure water spray switch two, described low pressure water spray switch two is connected with three-level water injection valve, and described three-level water injection valve is connected with described condenser.
4. the turbine by-pass control system with voltage stabilizing function according to claim 1 or 2 or 3, it is characterized in that：Described low pressure water spray switch one, described low pressure water spray switch two is connected with described low-pressure heater and described booster respectively.
5. the control method of the described turbine by-pass control system with voltage stabilizing function of one of a kind of claim 1-4, it is characterized in that：The method comprises the following steps：
Unit is starting, normal operation, under removal of load operating mode, each valve（Height spray valve, low spray valve, three-level water injection valve automatic or manual（Straighforward operation）Carrying out quickly start, can guarantee that when main vapour, reheated steam operating pressure, temperature exceed setting range when, shunting device（Side valve high, low side valve）Can be automatically opened or closed, and carry out pressure, temperature automatic adjustment by unit operation situation, until recovering normal value, when the pressure or temperature of steam are higher than the operating pressure for setting, can open in time, bleed off a part of steam, so as to ensure the pressure stability for entering main inlet throttle-stop valve in certain scope, steam into bypass eventually enters into condenser, because vapor (steam) temperature is higher, two grades of desuperheats are provided with bypath system, when some technological parameters are unsatisfactory in system, corresponding opening soon or quick closing valve action is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879428.2A CN106837436A (en) | 2015-12-05 | 2015-12-05 | Turbine by-pass control system and control method with voltage stabilizing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879428.2A CN106837436A (en) | 2015-12-05 | 2015-12-05 | Turbine by-pass control system and control method with voltage stabilizing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837436A true CN106837436A (en) | 2017-06-13 |
Family
ID=59149326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510879428.2A Pending CN106837436A (en) | 2015-12-05 | 2015-12-05 | Turbine by-pass control system and control method with voltage stabilizing function |
Country Status (1)
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|---|---|
| CN (1) | CN106837436A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781630A (en) * | 2016-03-02 | 2016-07-20 | 王欣 | Bypass control system of electric power generation steam turbine |
| CN107143842A (en) * | 2017-06-29 | 2017-09-08 | 大唐贵州兴仁发电有限公司 | A kind of high-pressure heater quick start system |
| CN108708774A (en) * | 2018-04-09 | 2018-10-26 | 中国船舶重工集团公司第七O三研究所无锡分部 | Steam supply system for Turbo-generator Set dynamic performance testing |
| CN108954291A (en) * | 2018-07-18 | 2018-12-07 | 深能合和电力（河源）有限公司 | A kind of power station unit pipe-line system |
| CN109854317A (en) * | 2019-02-13 | 2019-06-07 | 大唐绥化热电有限公司 | Steam Turbine integrated-type bypath system and control method |
| CN112627923A (en) * | 2020-11-30 | 2021-04-09 | 重庆工程职业技术学院 | Steam turbine rotating speed control method based on valve characteristic curve under extreme working condition |
-
2015
- 2015-12-05 CN CN201510879428.2A patent/CN106837436A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781630A (en) * | 2016-03-02 | 2016-07-20 | 王欣 | Bypass control system of electric power generation steam turbine |
| CN107143842A (en) * | 2017-06-29 | 2017-09-08 | 大唐贵州兴仁发电有限公司 | A kind of high-pressure heater quick start system |
| CN108708774A (en) * | 2018-04-09 | 2018-10-26 | 中国船舶重工集团公司第七O三研究所无锡分部 | Steam supply system for Turbo-generator Set dynamic performance testing |
| CN108954291A (en) * | 2018-07-18 | 2018-12-07 | 深能合和电力（河源）有限公司 | A kind of power station unit pipe-line system |
| CN109854317A (en) * | 2019-02-13 | 2019-06-07 | 大唐绥化热电有限公司 | Steam Turbine integrated-type bypath system and control method |
| CN112627923A (en) * | 2020-11-30 | 2021-04-09 | 重庆工程职业技术学院 | Steam turbine rotating speed control method based on valve characteristic curve under extreme working condition |
| CN112627923B (en) * | 2020-11-30 | 2022-12-02 | 重庆工程职业技术学院 | Steam turbine rotating speed control method based on valve characteristic curve under extreme working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |
|
| WD01 | Invention patent application deemed withdrawn after publication |