CN204663594U - The feedwater flow control system of Power Plant Feedwater mercury vapour turbine - Google Patents
The feedwater flow control system of Power Plant Feedwater mercury vapour turbine Download PDFInfo
- Publication number
- CN204663594U CN204663594U CN201520240901.8U CN201520240901U CN204663594U CN 204663594 U CN204663594 U CN 204663594U CN 201520240901 U CN201520240901 U CN 201520240901U CN 204663594 U CN204663594 U CN 204663594U
- Authority
- CN
- China
- Prior art keywords
- pid controller
- feedwater
- rotating speed
- feedwater flow
- 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.)
- Expired - Fee Related
Links
Landscapes
- Flow Control (AREA)
Abstract
The utility model relates to the feedwater flow control system of Power Plant Feedwater mercury vapour turbine.The feedwater flow control system that object is to provide should be able to have the situation of intersection by the fast and pump power characteristic curve of quick solution boiler feed water change, avoids occurring robbing water phenomenon, thus guarantees the stable operation of system.Technological scheme is: the feedwater flow control system of Power Plant Feedwater mercury vapour turbine, comprise feedwater flow coherent system and several rotating speed PID controller, each rotating speed PID controller and each feed pump turbine one_to_one corresponding, and the signal input part of rotating speed PID controller connects with the speed probe of corresponding feed pump turbine, it is characterized in that: the control end of each rotating speed PID controller is connected with the signal input part of a valve PID controller respectively, the control end of valve PID controller is connected with water pump turbine governor valve, wireless connections between valve PID controller and feedwater flow coherent system.
Description
Technical field
The utility model relates to steam turbine technology field, particularly relates to a kind of feedwater flow control system for Power Plant Feedwater mercury vapour turbine.
Background technique
The feedwater flow control system of existing Power Plant Feedwater mercury vapour turbine is by power plant's water yield coherent system remote pilot requirement, provide water pump turbine speed remote control command, indirectly control feedwater flow by rotational speed governor again, when such normal table runs, the control overflow that feeds water can be ensured.But when thermal power plant's main generator load Rapid Variable Design, boiler feed capacity can be caused not catch up with the requirement of load variations, cause control to delay, affect the allotment of whole electrical network, and the economic benefit of remote-effects power plant.And, when three pump characteristics have multiple-spot detection, there will be between three water pumps and rob water phenomenon.For this reason; existing solution is the rate limit of rotational speed governor under increasing remote state; adopt the PID controller according to the automatic variable element of operating mode; the methods such as control command is biased are set; but effect is not fine, and in power plant RB (main generator gets rid of 50% load) and FCB (thermal power plant shuts down not blowing out) test, regulation and control speed is slow; fluctuation is frequent and amplitude is large, is difficult to meet power plant process requirement completely.
Model utility content
The purpose of this utility model overcomes the deficiency in above-mentioned background technology, a kind of improvement of the feedwater flow control system for Power Plant Feedwater mercury vapour turbine is provided, feedwater flow control system after improvement should be able to have the situation of intersection by the fast and pump power characteristic curve of quick solution boiler feed water change, avoid occurring robbing water phenomenon, thus guarantee the stable operation of system.
The utility model have employed following technological scheme:
The feedwater flow control system of Power Plant Feedwater mercury vapour turbine, comprise feedwater flow coherent system and several rotating speed PID controller, each rotating speed PID controller and each feed pump turbine one_to_one corresponding, and the signal input part of rotating speed PID controller connects with the speed probe of corresponding feed pump turbine, it is characterized in that: the control end of each rotating speed PID controller is connected with the signal input part of a valve PID controller respectively, the control end of valve PID controller is connected with water pump turbine governor valve, wireless connections between valve PID controller and feedwater flow coherent system.
The pressure range of described water pump turbine governor valve is 0.45-1.05MPa (g).
The beneficial effects of the utility model are: the utility model adopts rotating speed PID controller and valve PID controller as the core of control system, according to power plant's water yield coherent system remote pilot requirement, directly controls feed pump turbine modulating valve; When feed pump turbine is in rotating speed state of a control, by rotational speed governor regulating and controlling valve opening, control pump rotary speed; When needs feedwater universal time coordinated, feedwater remote control command, directly carry out regulating and controlling valve opening, rotating speed is only protected; Two PID export and follow the tracks of mutually, ensure no-harass switch between two states, and the control rate that feeds water like this is fast, can solve boiler feed water change soon and pump power characteristic curve have the situation of intersection, system running state is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing feedwater flow control system.
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 2, the feedwater flow control system of the Power Plant Feedwater mercury vapour turbine that the utility model provides, comprises feedwater flow coherent system 3 (prior art) and several rotating speed PID controller 1 (being generally 3).Each rotating speed PID controller and each feed pump turbine 5 one_to_one corresponding, and the signal input part of rotating speed PID controller connects with the speed probe 6 of corresponding feed pump turbine, the control end of each rotating speed PID controller is connected with the signal input part of a valve PID controller 2 respectively, the control end of valve PID controller is connected with water pump turbine governor valve 4, wireless connections between valve PID controller and feedwater flow coherent system, thus the feedwater remote control command receiving feedwater flow coherent system.The pressure range of described water pump turbine governor valve 4 is 0.45-1.05MPa (g).
Working principle of the present utility model is: under nominal situation, is controlled the aperture of water pump turbine governor valve, control pump rotary speed by rotating speed PID controller; When occurring special operation condition, confluent is not enough, feedwater flow coherent system sends feedwater remote control command, is controlled rapidly the aperture of water pump turbine governor valve, to ensure the stable operation of feed pump turbine after valve PID controller receives instruction by servo module and servovalve.
The equal buyable of described valve PID controller, rotating speed PID controller and each sensor obtains, and inner control program and working principle are routine techniques, do not describe in detail at this.
Finally, it should be noted that above what enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have a lot of distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed in the utility model, all should think protection domain of the present utility model.
Claims (2)
1. the feedwater flow control system of Power Plant Feedwater mercury vapour turbine, comprise feedwater flow coherent system (3) and several rotating speed PID controller (1), each rotating speed PID controller and each feed pump turbine (5) one_to_one corresponding, and the signal input part of rotating speed PID controller connects with the speed probe (6) of corresponding feed pump turbine, it is characterized in that: the control end of each rotating speed PID controller is connected with the signal input part of a valve PID controller (2) respectively, the control end of valve PID controller is connected with water pump turbine governor valve (4), wireless connections between valve PID controller and feedwater flow coherent system.
2. the feedwater flow control system of Power Plant Feedwater mercury vapour turbine according to claim 1, is characterized in that: the pressure range of described water pump turbine governor valve (4) is 0.45-1.05MPa (g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240901.8U CN204663594U (en) | 2015-04-20 | 2015-04-20 | The feedwater flow control system of Power Plant Feedwater mercury vapour turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240901.8U CN204663594U (en) | 2015-04-20 | 2015-04-20 | The feedwater flow control system of Power Plant Feedwater mercury vapour turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663594U true CN204663594U (en) | 2015-09-23 |
Family
ID=54133985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520240901.8U Expired - Fee Related CN204663594U (en) | 2015-04-20 | 2015-04-20 | The feedwater flow control system of Power Plant Feedwater mercury vapour turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663594U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129309A (en) * | 2016-08-30 | 2016-11-16 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106207051A (en) * | 2016-08-30 | 2016-12-07 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106870341A (en) * | 2017-02-06 | 2017-06-20 | 国家电网公司 | A kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method |
| CN110805477A (en) * | 2018-12-29 | 2020-02-18 | 四川广安发电有限责任公司 | Control method and control system for water feeding pump steam turbine |
-
2015
- 2015-04-20 CN CN201520240901.8U patent/CN204663594U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129309A (en) * | 2016-08-30 | 2016-11-16 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106207051A (en) * | 2016-08-30 | 2016-12-07 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106207051B (en) * | 2016-08-30 | 2018-07-10 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106129309B (en) * | 2016-08-30 | 2018-07-10 | 无锡溥汇机械科技有限公司 | A kind of lithium ion battery separator slurry spin coating amount intelligent PID control system and control method |
| CN106870341A (en) * | 2017-02-06 | 2017-06-20 | 国家电网公司 | A kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method |
| CN110805477A (en) * | 2018-12-29 | 2020-02-18 | 四川广安发电有限责任公司 | Control method and control system for water feeding pump steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204663594U (en) | The feedwater flow control system of Power Plant Feedwater mercury vapour turbine | |
| CN203224772U (en) | Primary frequency modulation control system for 660MW supercritical units | |
| CN105826936B (en) | A kind of fired power generating unit intelligence primary frequency modulation control method for power grid large frequency-difference | |
| CN204990045U (en) | Fluid flow pressure control device | |
| CN203573174U (en) | Deoxygenator water level automatic control system | |
| CN203285493U (en) | Steam turbine multi-steam source automatic switching control system | |
| CN204302776U (en) | A kind of fired power generating unit overheating steam temperature Dynamic matrix control optimization device | |
| CN104656688A (en) | Novel deaerator water level control system | |
| CN103777556A (en) | Priority adjusting method and system for primary frequency modulation of unit plant | |
| CN103412479B (en) | Paired running oxygen-eliminating device intelligent control method | |
| CN101504135B (en) | Steam pressure equalization controller for boiler-turbine unit | |
| CN204302777U (en) | A kind of fired power generating unit AGC Dynamic matrix control optimization device | |
| CN204287991U (en) | A kind of deaerator level automatic control system | |
| CN105019952A (en) | Control method for improving load response of primary frequency modulation | |
| CN204663593U (en) | The filling control system of Power Plant Feedwater mercury vapour turbine | |
| CN204127936U (en) | What be applicable to power plant boiler supplies water controlling equipment | |
| CN212901461U (en) | Steam drum water level three-impulse control system | |
| CN204009409U (en) | A kind of direct current cooker unit coordinatedcontrol system | |
| CN204476699U (en) | A kind of piston compressor frequency conversion cooling system based on PID | |
| CN109339872A (en) | Nuclear power station steam turbine control system | |
| CN203338180U (en) | Energy-efficient greenhouse humiture multi-index control system | |
| CN205079217U (en) | Integrative type exhaust -heat boiler low pressure boiler drum level controlling means that coordinates of power plant's valve pump | |
| CN102176176B (en) | Sliding-pressure operation unit optimizing control method in automatic gain control (AGC) mode | |
| CN204024728U (en) | A kind of steam turbine pitch redundancy control system | |
| CN203223901U (en) | Hearth pressure control system of large-sized boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |