CN101235732A - Exhaust heat steam turbine air-supplementary regulation system and its control method - Google Patents
Exhaust heat steam turbine air-supplementary regulation system and its control method Download PDFInfo
- Publication number
- CN101235732A CN101235732A CNA2008100599900A CN200810059990A CN101235732A CN 101235732 A CN101235732 A CN 101235732A CN A2008100599900 A CNA2008100599900 A CN A2008100599900A CN 200810059990 A CN200810059990 A CN 200810059990A CN 101235732 A CN101235732 A CN 101235732A
- Authority
- CN
- China
- Prior art keywords
- steam
- filling
- complementing
- pressure
- valve
- Prior art date
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 29
- 230000001276 controlling effect Effects 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 13
- 230000003628 erosive effect Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a residual heat utilization steam turbine steam complementing adjusting system and a control method, which comprises an adjustable steam complementing adjusting steam valve, a pressure steam turbine, a transducer, a steam-water separator and an adjustor, a steam complementing hole is arranged on the interpolar position of a steam turbine, a steam complementing pipeline is connected on the steam complementing hole, a steam-water separator is arranged on the steam complementing pipeline, the adjustable steam complementing adjusting steam valve is arranged on the steam complementing pipeline between the steam-water separator and the steam complementing hole, executing signals of the adjustable steam complementing adjusting steam valve are connected with the adjuster output control signals, a pressure transducer is arranged on the steam complementing pipeline, the steam complementing signals of the pressure transducer is connected with the adjuster pressure output signals. Steam complementing steam firstly passes through the steam-water separator, and wet steam is conversed to be dry steam to reduce waterworn. The residual heat utilization steam turbine steam complementing adjusting system which is got by the invention effectively solves the problem which exists in the existing technique, the system achieves automatic adjustment of steam complementing when a steam complementing system which is stably operated is guaranteed. Thereby residual heat utilization is led to be the highest.
Description
Technical field
The present invention relates to a kind of control technique of UTILIZATION OF VESIDUAL HEAT IN steam turbine, particularly a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system and controlling method thereof.
Background technique
Industries such as cement, steel mill, petrochemical industry often produce the steam of different parameters in process of production, some low-grade (low-pressure saturated steams) often can not get effective utilization, directly emptying not only wastes energy, and goes back befouling environment, and this part low pressure steam temperature is low and flow is big.Domestic existing steam compensating turbine structure fails fully to be provided with and can not to regulate voluntarily according to the performance of steam compensating turbine, causes the unstability and the unadjustable property of filling, thereby influences turbine exhaust heat utilization ratio and stability.
Summary of the invention
The objective of the invention is provides a kind of when guaranteeing the filling system stable operation for the deficiency that solves above-mentioned technology, also realize the adjusting voluntarily of filling, reached the filling regulating system and the controlling method thereof of the UTILIZATION OF VESIDUAL HEAT IN steam turbine of the highest UTILIZATION OF VESIDUAL HEAT IN efficient.
In order to achieve the above object, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system that the present invention is designed, it comprises adjustable filling adjusting steam valve, the pressure steam turbine, transmitter, steam-water separator, regulator, inter-stage position at steam turbine is provided with filling mouth, be connected with gas filling pipeline on the filling mouth, gas filling pipeline is provided with steam-water separator, on the gas filling pipeline between steam-water separator and the filling mouth, be provided with adjustable filling and regulate steam valve, the execution signal that steam valve is regulated in adjustable filling is connected with regulator output control signal, pressure transmitter is set on gas filling pipeline, and the filling pressure signal of pressure transmitter is connected with the regulator pressure input signal.It is characterized in that being provided with the filling quick-closing valve in gas filling pipeline, be provided with the main steam quick-closing valve on main steam line, filling quick-closing valve and main steam quick-closing valve are chain and form speed with electro-control converter, hydraulic circuit and solenoid valve and close composite set.Described steam-water separator can adopt centrifugal spiral steam-water separator; Described regulator can adopt Digital Controller, and adopts electricity-liquid regulative mode;
A kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method, it comprises that exhaust heat boiler produces two-way steam, one tunnel main steam enters the former levels of steam turbine and carries out work done, another road steam is filling steam, it is characterized in that filling mouth being set in the inter-stage position of steam turbine, filling steam at first passes through steam-water separator, and wet vapor is converted into dry steam, to reduce water erosion; Pressure transmitter is set on gas filling pipeline, the pressure signal input regulator, with setting value relatively back output carry out signal, make adjustable filling regulate the steam valve action, thereby when making the filling variation in pressure, realize that the automatic control of pressure is regulated, make force value be returned to setting value.
Described a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method, be to adopt electricity-liquid regulative mode, when the filling force value changes, pressure transmitter this moment the force value that measures export to regulator among the controller DCS, regulator is regulating deviation signal, be that filling pressure given value and deviation of measuring value 4-20mA current signal are defeated by the electro-control converter in the composite set of speed pass, electro-control converter changes into the secondary oil pressure to deviation signal, the secondary oil pressure is handled the aperture that steam valve is regulated in adjustable filling by oil engine, and the aperture that makes adjustable filling regulate steam valve increases or reduces.Filling quick-closing valve and main steam quick-closing valve set in the system are chain, if system's waste gas residual heat fluctuation is too big, and filling parameter instability, when influencing the safe and stable operation of steam turbine, can close the filling valve, stop filling, steam turbine still can safe and stable operation.
The resulting a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system of the present invention has solved problems of the prior art effectively, this system disposes by rational structure, when guaranteeing the filling system stable operation, also realized the adjusting voluntarily of filling, thereby made UTILIZATION OF VESIDUAL HEAT IN efficient reach the highest.
The resulting a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system filling flow of the present invention is big, and adapts to the wide variation (0～MAX) of flow; Filling fully mixes the back with main steam and regulates steam valve by filling in cylinder, the thermal efficiency is improved; Consider from aspects such as equipment, control mode and controller DCS control system are provided with between main inlet throttle-stop valve and the filling valve chain, protection, control, regulate, with the safe operation of assurance steam turbine; By the structure and the filling point of appropriate design steam turbine, improved the stability and the generated energy of system; This waste heat steam turbine filling regulating system adopts electric liquid to regulate, and the automaticity height is easy to control.
Be effective use of energy sources, the protection environment the purpose of this invention is to provide a kind of waste heat filling steam turbine, makes steam turbine by rational filling mode, reaches the comprehensive utilization of afterheat steam.
Description of drawings
Fig. 1 is an embodiment of the invention steam turbine filling regulating system structural representation;
Fig. 2 is the control principle figure of band control gear.
Wherein: steam valve 2, hydraulic circuit 3, solenoid valve 4, steam turbine 5, filling steam 6, steam-water separator 7, tonifying Qi quick-closing valve 8, pressure transmitter 9, filling pressure signal 10, condenser 11, filling mouth 12, gas filling pipeline 13, regulator 14, main steam line 15, main steam quick-closing valve 16, electro-control converter 17, inter-stage position 18 are regulated in main steam 1, adjustable filling.
Embodiment
The invention will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1
As shown in Figure 1, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system that present embodiment is described, it comprises adjustable filling adjusting steam valve 2, pressure steam turbine 5, transmitter 9, steam-water separator 7, regulator 14, inter-stage position 18 at steam turbine 5 is provided with filling mouth 12, be connected with gas filling pipeline 13 on the filling mouth 12, gas filling pipeline 13 is provided with steam-water separator 7, on the gas filling pipeline 13 between steam-water separator 7 and the filling mouth 12, be provided with adjustable filling and regulate steam valve 2, the execution signal that steam valve 2 is regulated in adjustable filling is connected with regulator 14 output control signals, pressure transmitter 9 is set on gas filling pipeline 13, and the filling pressure signal 10 of pressure transmitter 9 is connected with the pressure input signal of regulator 14.As shown in Figure 2, in gas filling pipeline 13, also can be provided with filling quick-closing valve 8, on main steam line 15, be provided with main steam quick-closing valve 16, filling quick-closing valve 8 and main steam quick-closing valve 16 are chain and form speed with electro-control converter 17, hydraulic circuit 3 and solenoid valve 4 and close composite sets, the solenoid valve 4 of filling quick-closing valve 8 is set, can closes filling steam 6 separately.Described steam-water separator 7 can adopt centrifugal spiral steam-water separator; Described regulator 14 can adopt Digital Controller.
A kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method, it comprises that exhaust heat boiler produces two-way steam, one tunnel main steam enters the former levels of steam turbine and carries out work done, another road steam is filling steam, inter-stage position 18 at steam turbine is provided with filling mouth 12, this inter-stage position 18 concrete determined can be different and adjust relatively according to the design parameter of filling pressure, filling steam 6 at first passes through steam-water separator 7, present embodiment is selected spiral steam-water separator for use, wet vapor is converted into dry steam, to reduce water erosion; Pressure transmitter 9 is set on gas filling pipeline 13, pressure signal input regulator 14, relatively export the execution signal in the back with setting value, make adjustable filling regulate steam valve 2 actions, thereby when making the filling variation in pressure, realize the automatic control adjusting of pressure, make force value be returned to setting value, guarantee that the pressure of filling mouth is relatively stable.
Described a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method, be to adopt electricity-liquid regulative mode, when the filling force value changes, pressure transmitter 9 this moment the force value that measures export to regulator 14 among the controller DCS, regulator 14 is regulating deviation signal, be that filling pressure given value and deviation of measuring value 4-20mA current signal are defeated by the electro-control converter 17 in the composite set of speed pass, electro-control converter 17 changes into the secondary oil pressure to deviation signal, the secondary oil pressure of present embodiment can be set in 1.5bar to 4.5bar, the secondary oil pressure is handled the aperture that steam valve 2 is regulated in adjustable filling by oil engine, and the aperture that makes adjustable filling regulate steam valve 2 increases or reduces.Filling steam 6 fully mixes the back with main steam 1 and regulates steam valve 2 by adjustable filling in cylinder, can improve the thermal efficiency and the unit safety of unit; Filling quick-closing valve 8 set in the system is chain with main steam quick-closing valve 16, if system's waste gas residual heat fluctuation is too big, and filling parameter instability, when influencing the safe and stable operation of steam turbine 5, can close filling quick-closing valve 8, stop filling, steam turbine 5 still can safe and stable operation.
Claims (4)
1, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system, it comprises adjustable filling adjusting steam valve (2), pressure steam turbine (5), transmitter (9), steam-water separator (7), regulator (14), it is characterized in that being provided with filling mouth (12) in the inter-stage position (18) of steam turbine (5), be connected with gas filling pipeline (13) on the filling mouth (12), gas filling pipeline (13) is provided with steam-water separator (7), on the gas filling pipeline (13) between steam-water separator (7) and the filling mouth (12), be provided with adjustable filling and regulate steam valve (2), the execution signal that steam valve (2) is regulated in adjustable filling is connected with regulator (14) output control signal, pressure transmitter (9) is set on gas filling pipeline (13), and the filling pressure signal of pressure transmitter (9) is connected with the regulator pressure input signal.
2, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system according to claim 1, it is characterized in that in gas filling pipeline (13), being provided with filling quick-closing valve (8), be provided with main steam quick-closing valve (16) on main steam line (15), filling quick-closing valve (8) and main steam quick-closing valve (16) are chain and form speed with electro-control converter (17), hydraulic circuit (3) and solenoid valve (4) and close composite set.
3, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method, it comprises that exhaust heat boiler produces two-way steam, one tunnel main steam enters the former levels of steam turbine and carries out work done, another road steam is filling steam, it is characterized in that filling mouth (12) being set in the inter-stage position (18) of steam turbine (5), filling steam (6) at first passes through steam-water separator (7), and wet vapor is converted into dry steam; Pressure transmitter (9) is set on gas filling pipeline (13), and pressure signal input regulator (14) is relatively exported the execution signal in the back with setting value, make adjustable filling regulate steam valve (2) action, thereby when making the filling variation in pressure, realize that the automatic control of pressure is regulated, make force value be returned to setting value.
4, a kind of UTILIZATION OF VESIDUAL HEAT IN steam turbine filling regulating system controlling method according to claim 3, it is characterized in that adopting electricity-liquid regulative mode, when the filling force value changes, pressure transmitter (9) this moment the force value that measures export to regulator (14) among the controller DCS, regulator (14) is regulating deviation signal, be that filling pressure given value and deviation of measuring value 4-20mA current signal are defeated by the electro-control converter (17) in the composite set of speed pass, electro-control converter (17) changes into the secondary oil pressure to deviation signal, the secondary oil pressure is handled the aperture that steam valve (2) is regulated in adjustable filling by oil engine, and the aperture that makes adjustable filling regulate steam valve (2) increases or reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100599900A CN101235732B (en) | 2008-03-07 | 2008-03-07 | Exhaust heat steam turbine air-supplementary regulation system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100599900A CN101235732B (en) | 2008-03-07 | 2008-03-07 | Exhaust heat steam turbine air-supplementary regulation system and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235732A true CN101235732A (en) | 2008-08-06 |
| CN101235732B CN101235732B (en) | 2010-07-14 |
Family
ID=39919601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100599900A Active CN101235732B (en) | 2008-03-07 | 2008-03-07 | Exhaust heat steam turbine air-supplementary regulation system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101235732B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886556A (en) * | 2010-06-28 | 2010-11-17 | 青岛捷能汽轮机集团股份有限公司 | Steam compensating turbine |
| CN101922315A (en) * | 2010-09-16 | 2010-12-22 | 青岛捷能汽轮机集团股份有限公司 | Steam supplementing type turbine and steam supplementing device thereof |
| CN101968216A (en) * | 2010-10-20 | 2011-02-09 | 成都四通新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN102661177A (en) * | 2010-10-15 | 2012-09-12 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN103334799A (en) * | 2013-06-06 | 2013-10-02 | 西安陕鼓动力股份有限公司 | Method and system for controlling air inflow of double air inflow condensation-type turbine |
| CN104074561A (en) * | 2014-06-03 | 2014-10-01 | 国家电网公司 | Throttling adjusting system of cogeneration turbine unit and method of ordering power by heat |
| CN106089328A (en) * | 2016-08-10 | 2016-11-09 | 西安热工研究院有限公司 | Steam turbine pitch rating curve discrimination method based on DCS data mining |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2593578B2 (en) * | 1990-10-18 | 1997-03-26 | 株式会社東芝 | Combined cycle power plant |
-
2008
- 2008-03-07 CN CN2008100599900A patent/CN101235732B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886556A (en) * | 2010-06-28 | 2010-11-17 | 青岛捷能汽轮机集团股份有限公司 | Steam compensating turbine |
| CN101886556B (en) * | 2010-06-28 | 2011-10-26 | 青岛捷能汽轮机集团股份有限公司 | Steam compensating turbine |
| CN101922315A (en) * | 2010-09-16 | 2010-12-22 | 青岛捷能汽轮机集团股份有限公司 | Steam supplementing type turbine and steam supplementing device thereof |
| CN101922315B (en) * | 2010-09-16 | 2011-10-26 | 青岛捷能汽轮机集团股份有限公司 | Steam supplementing type turbine and steam supplementing device thereof |
| CN102661177B (en) * | 2010-10-15 | 2014-09-17 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN102661177A (en) * | 2010-10-15 | 2012-09-12 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN101968216B (en) * | 2010-10-20 | 2013-02-20 | 成都昊特新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN101968216A (en) * | 2010-10-20 | 2011-02-09 | 成都四通新能源技术有限公司 | System for automatically adjusting temperature of smoke at outlet of waste heat boiler |
| CN103334799A (en) * | 2013-06-06 | 2013-10-02 | 西安陕鼓动力股份有限公司 | Method and system for controlling air inflow of double air inflow condensation-type turbine |
| CN103334799B (en) * | 2013-06-06 | 2015-04-15 | 西安陕鼓动力股份有限公司 | Method and system for controlling air inflow of double air inflow condensation-type turbine |
| CN104074561A (en) * | 2014-06-03 | 2014-10-01 | 国家电网公司 | Throttling adjusting system of cogeneration turbine unit and method of ordering power by heat |
| CN106089328A (en) * | 2016-08-10 | 2016-11-09 | 西安热工研究院有限公司 | Steam turbine pitch rating curve discrimination method based on DCS data mining |
| CN106089328B (en) * | 2016-08-10 | 2017-06-30 | 西安热工研究院有限公司 | Steam turbine pitch rating curve discrimination method based on DCS data minings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101235732B (en) | 2010-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101235732B (en) | Exhaust heat steam turbine air-supplementary regulation system and its control method | |
| CN103109047B (en) | Power plant facility, ship provided with same, and method for operating power plant facility | |
| CN107420874B (en) | Ultra-supercritical thermal generator set coordination control system | |
| WO2020181678A1 (en) | Primary frequency regulation optimization control method corrected based on stored exergy of thermal systems of coal-fired unit | |
| CN103791485B (en) | Optimal control method of water supply system of thermal power generating unit | |
| CN104714566B (en) | A kind of condensate throttling control system and its method of controlling security | |
| CN104197324B (en) | Fluidized-bed combustion boiler burning optimization adjustment control method and device | |
| CN108661725B (en) | Self-adjusting system and control method for heat supply steam extraction unit | |
| CN105180139A (en) | Main steam temperature control system and method for boiler | |
| CN102563598A (en) | Control optimizing method for master controller of supercritical unit boilers | |
| CN111255529B (en) | Rapid response automatic power generation control system and method during operation of heat supply cylinder cutting unit | |
| CN106090872B (en) | A kind of overcritical coal-fired level pressure unit RB optimal control methods | |
| CN105182925A (en) | Energy-saving coordination control method for coal-fired power units | |
| CN113483319A (en) | Variable-frequency energy-saving optimization control system and method for condensate pump of thermal power generating unit | |
| CN104232846B (en) | A kind of system and method to RH refining furnace steam supply | |
| CN115419478A (en) | Optimized control method for steel mill gas power generation | |
| CN112051793A (en) | Large-scale waste heat recovery control system | |
| CN201218519Y (en) | Reheating temperature-reduction auxiliary regulating mechanism for coal-gas mixed combustion boiler | |
| CN211851929U (en) | Quick response automatic power generation control system during operation of heat supply cylinder cutting unit | |
| CN113390099A (en) | Coordination control method under coal-fired cogeneration unit self-adaptive BTU | |
| CN201507945U (en) | Control, regulation and remote monitoring system for fuel/gas boilers | |
| CN102032588B (en) | Controlling, adjusting and remote monitoring system for fuel gas-fired boiler | |
| CN201599066U (en) | Steam supplementing and condensing steam turbine adjusting device utilizing pure low-temperature waste heat | |
| JP6290652B2 (en) | Power generation system and method for controlling power generation system | |
| CN110955141A (en) | Reheating steam temperature control method based on neural network inverse model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310018, No. 22, No. 18, Xiasha economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: Hangzhou Zhongneng Turbine Machinery Equipment Co.,Ltd. Country or region after: China Address before: 310018, No. 22, No. 18, Xiasha economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU CHINEN STEAM TURBINE POWER CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |