CN204663593U - The filling control system of Power Plant Feedwater mercury vapour turbine - Google Patents
The filling control system of Power Plant Feedwater mercury vapour turbine Download PDFInfo
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- CN204663593U CN204663593U CN201520240905.6U CN201520240905U CN204663593U CN 204663593 U CN204663593 U CN 204663593U CN 201520240905 U CN201520240905 U CN 201520240905U CN 204663593 U CN204663593 U CN 204663593U
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- pressure
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- filling
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Abstract
The utility model relates to the filling control system of Power Plant Feedwater mercury vapour turbine.The filling control system that object is to provide should be able to regulate tonifying Qi source of the gas rapidly, thus guarantees the stable operation of steam turbine, and has the advantages that structure is simple, maintenance cost is lower.Technological scheme is: the filling control system of Power Plant Feedwater mercury vapour turbine, and comprise a rotating speed PID controller, its signal input part is connected with the speed probe of boiler feed pump turbine, and its control end is connected with the servo valve on main steam inlet tube road; Control system also comprises a pressure P ID controller, is arranged on the first pressure transmitter on main steam inlet tube road and is arranged on the second pressure transmitter of gas filling pipeline, first, second pressure transmitter is connected with the signal input part of pressure P ID controller, the control end of pressure P ID controller is connected with the pipeline modulating valve on filling steam line, is connected and both-way communication between described pressure P ID controller with described rotating speed PID controller.
Description
Technical field
The utility model relates to steam turbine technology field, particularly relates to a kind of feed pump turbine filling control system for thermal power plant.
Background technique
Steam turbine is due to application variation, low unstable again at power industry waste heat vapour source dates, and for making full use of the energy, adopt afterheat steam driving steam turbine, insufficient section needs are done work by the mode being switched to filling in the middle of steam turbine and supply.
As shown in Figure 1, current switching controls mode is the tach signal utilizing speed probe to gather steam turbine, be sent to rotating speed PID controller to compare with inner setting value, two path control signal is exported after amplifying, control the aperture of servo valve in main steam inlet tube road and the aperture of the modulating valve of filling steam line respectively, thus by regulating throttle flow to regulate adjustment steam turbine to exert oneself, make the stabilization of speed of steam turbine in setting value.Control filling when main inlet control valve standard-sized sheet with rotating speed PID to regulate; two modulating valve are controlled owing to all adopting same group of PID; when valve transfer; easily cause disturbance; and have delayed due to the change of speed feedback relative pressure, therefore this kind of mode filling regulating power is weak, is applicable to the operating conditions that filling amount is little; when filling amount is large or pressure surge time difficult to control, also easily cause the excessive and then protection of blade pressure reduction to shut down.
Model utility content
The purpose of this utility model overcomes the deficiency in above-mentioned background technology, a kind of feed pump turbine filling control system for thermal power plant is provided, this filling control system should be able to regulate tonifying Qi source of the gas rapidly, thus guarantee the stable operation of steam turbine, and have the advantages that structure is simple, maintenance cost is lower.
The utility model have employed following technological scheme:
The filling control system of Power Plant Feedwater mercury vapour turbine, comprise a rotating speed PID controller, its signal input part is connected with the speed probe of boiler feed pump turbine, and its control end is connected with the servo valve on main steam inlet tube road; It is characterized in that: described control system also comprises a pressure P ID controller, is arranged on the first pressure transmitter on main steam inlet tube road and is arranged on the second pressure transmitter of gas filling pipeline, first, second pressure transmitter is connected with the signal input part of pressure P ID controller, the control end of pressure P ID controller is connected with the pipeline modulating valve on filling steam line, is connected and both-way communication between described pressure P ID controller with described rotating speed PID controller.
The pressure range that described pipeline modulating valve connects is 0.3-0.9MPa (g).
The beneficial effects of the utility model are: the utility model adopts high performance rotating speed PID controller and pressure P ID controller as the core of control system, by the interlock of two PID controller, achieve filling vapour source auto-changeover control, ensure that the unperturbed in vapour source switches fast, safeguard the stable operation of steam turbine, save the operating cost of factory; The components and parts used are few, wiring simple, construction debugging is convenient and time-saving.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing filling 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 filling control system of the Power Plant Feedwater mercury vapour turbine that the utility model provides, comprise a rotating speed PID controller 1, its signal input part is connected with the speed probe 2 of boiler feed pump turbine E, and its control end is connected with the servo valve D on main steam inlet tube road L1.Described control system also comprises a pressure P ID controller 3, is arranged on the first pressure transmitter A on main steam inlet tube road and is arranged on the second pressure transmitter B of gas filling pipeline L2, first, second pressure transmitter is connected with the signal input part of pressure P ID controller, the control end of pressure P ID controller is connected with the pipeline modulating valve C on filling steam line, is connected and both-way communication between described pressure P ID controller with described rotating speed PID controller.The pressure range that described pipeline modulating valve connects (C) is 0.3-0.9MPa (g).
Working principle of the present utility model is: when occurring special operation condition, admission is not enough, pressure now in main steam inlet tube road reduces, admission tune valve opening reaches a larger aperture, pressure P ID controller controls gas filling pipeline modulating valve and opens rapidly, pressure P ID controller and rotating speed PID controller follow the tracks of switching mutually, and filling steam is sent into the stable operation ensureing boiler feed pump turbine; Simultaneously for ensureing turbine blade safety, filling pressure being set and vapour differential voltage protection of nourishing, controlling filling and adjusting valve, regulating and controlling reliable and stable, fast response time, reducing fluctuation.
The equal buyable of described pressure P ID 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 filling control system of Power Plant Feedwater mercury vapour turbine, comprise a rotating speed PID controller (1), its signal input part is connected with the speed probe (2) of boiler feed pump turbine (E), and its control end is connected with the servo valve (D) on main steam inlet tube road (L1); It is characterized in that: described control system also comprises a pressure P ID controller (3), is arranged on the first pressure transmitter (A) on main steam inlet tube road and is arranged on second pressure transmitter (B) of gas filling pipeline (L2), first, second pressure transmitter is connected with the signal input part of pressure P ID controller, the control end of pressure P ID controller is connected (C) with the pipeline modulating valve on filling steam line, is connected and both-way communication between described pressure P ID controller with described rotating speed PID controller.
2. the filling control system of Power Plant Feedwater mercury vapour turbine according to claim 1, is characterized in that: the pressure range that described pipeline modulating valve connects (C) is 0.3-0.9MPa (g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240905.6U CN204663593U (en) | 2015-04-20 | 2015-04-20 | The filling control system of Power Plant Feedwater mercury vapour turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520240905.6U CN204663593U (en) | 2015-04-20 | 2015-04-20 | The filling control system of Power Plant Feedwater mercury vapour turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663593U true CN204663593U (en) | 2015-09-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520240905.6U Expired - Fee Related CN204663593U (en) | 2015-04-20 | 2015-04-20 | The filling control system of Power Plant Feedwater mercury vapour turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663593U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242367A (en) * | 2019-07-17 | 2019-09-17 | 杭州汽轮机股份有限公司 | Steam extraction and condensing formula industrial steam turbine |
| CN110986024A (en) * | 2019-11-04 | 2020-04-10 | 中国能源建设集团华东电力试验研究院有限公司 | 660MW supercritical unit water supply system steam source switching control device and control method |
| CN113374539A (en) * | 2021-06-09 | 2021-09-10 | 攀钢集团攀枝花钢钒有限公司 | Steam inlet control system of double-cylinder double-pressure waste heat generating set and steam supplementing control method thereof |
-
2015
- 2015-04-20 CN CN201520240905.6U patent/CN204663593U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242367A (en) * | 2019-07-17 | 2019-09-17 | 杭州汽轮机股份有限公司 | Steam extraction and condensing formula industrial steam turbine |
| CN110986024A (en) * | 2019-11-04 | 2020-04-10 | 中国能源建设集团华东电力试验研究院有限公司 | 660MW supercritical unit water supply system steam source switching control device and control method |
| CN113374539A (en) * | 2021-06-09 | 2021-09-10 | 攀钢集团攀枝花钢钒有限公司 | Steam inlet control system of double-cylinder double-pressure waste heat generating set and steam supplementing control method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180420 |