CN209742979U - heat load balance distribution control device for multiple steam turbine generator units - Google Patents
heat load balance distribution control device for multiple steam turbine generator units Download PDFInfo
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- CN209742979U CN209742979U CN201920354933.9U CN201920354933U CN209742979U CN 209742979 U CN209742979 U CN 209742979U CN 201920354933 U CN201920354933 U CN 201920354933U CN 209742979 U CN209742979 U CN 209742979U
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Abstract
the utility model relates to a steam turbine technical field. The technical scheme is as follows: the heat load balance distribution control device for the multiple turbo generator units comprises a plurality of pipeline regulating valves respectively arranged on a branch steam inlet pipeline of a steam turbine, a plurality of first pressure transmitters respectively arranged on a branch steam outlet pipeline of the steam turbine, a plurality of first pressure PID controllers matched with the pipeline regulating valves and the first pressure transmitters, a main pipe pressure regulating valve and a second pressure transmitter arranged on a main steam outlet pipe, and a second pressure PID controller matched with the main pipe pressure regulating valve and the second pressure transmitter; the method is characterized in that: the device also comprises a heat load balance distribution controller and a third pressure transmitter arranged on the steam exhaust main pipe; in each steam turbine, the signal input end of the first pressure PID controller is connected with the first pressure sensor, and the control end of the first pressure PID controller is connected with the pipeline regulating valve. The device should be able to quickly distribute and adjust the load for the steam turbine, thereby ensuring the steam supply stability of the steam turbine.
Description
Technical Field
The utility model relates to a steam turbine technical field specifically relates to a many turbo generator set heat load balance distribution control device.
Background
In the application of power generating units in domestic power and petrochemical industries, the main requirement of the operation of the steam turbine generator unit is to ensure the heat load of a rear-end user, and the electric load is only used as a secondary requirement. As shown in fig. 2, because of a large demand of thermal load, a plurality of turbo generator units D1 are often used in parallel, a branch steam exhaust pipeline L2 is connected to the same steam exhaust main pipe L3, and heat is supplied to a rear-end heat user through the steam exhaust main pipe, but the situation that each steam turbine seizes load mutually occurs in the operation process, and the specific reasons are as follows:
Collecting pressure signals through a first pressure transmitter P1 of each turbine, transmitting the pressure signals to a first pressure PID controller 1 to be compared with an internal set value, then controlling the opening degree of a pipeline regulating valve A1 on a branch steam inlet pipeline, and adjusting the output force of the turbine by changing the steam inlet quantity to stabilize the heat load of the turbine at the set value; because all steam turbine thermal loads all carry out the step-down regulation through main pipe pressure-regulating valve A2, if the load fluctuation is big during this period, the condition that the steam turbine snatched the load each other will appear, cause the operation disturbance, be difficult to guarantee the steady operation, often lead to the steam supply volume not enough and restrict and exert oneself, need artifical frequent intervention, can't adapt to the requirement of thermal load rapid change, influenced user's use and experienced, consequently need improve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the above-mentioned background art, providing a balanced distribution control device of many turbo generator set heat load, the device should be able to be fast for steam turbine distribution adjustment load to it is stable to guarantee that the steam turbine supplies vapour.
The technical scheme of the utility model is that:
the heat load balance distribution control device for the multiple turbo generator units comprises a plurality of pipeline regulating valves respectively arranged on a branch steam inlet pipeline of a steam turbine, a plurality of first pressure transmitters respectively arranged on a branch steam outlet pipeline of the steam turbine, a plurality of first pressure PID controllers matched with the pipeline regulating valves and the first pressure transmitters, a main pipe pressure regulating valve and a second pressure transmitter arranged on a main steam outlet pipe, and a second pressure PID controller matched with the main pipe pressure regulating valve and the second pressure transmitter; the method is characterized in that:
The device also comprises a heat load balance distribution controller and a third pressure transmitter arranged on the steam exhaust main pipe; in each steam turbine, the signal input end of a first pressure PID controller is connected with a first pressure sensor, and the control end of the first pressure PID controller is connected with a pipeline regulating valve;
the second pressure transmitter and the third pressure transmitter are arranged at two ends of the master pipe pressure regulating valve; the signal input end of the second pressure PID controller is connected with a second pressure sensor, and the control end of the second pressure PID controller is connected with a main pipe pressure regulating valve;
The signal input end of the heat load balance distribution controller is connected with the third pressure transmitter, the control end of the heat load balance distribution controller is connected with all the first pressure PID controllers, and the communication end of the heat load balance distribution controller is connected with the communication end of the second pressure PID controller.
The second pressure transmitter is positioned at the outlet of the main pipe pressure regulating valve, and the third pressure transmitter is positioned at the inlet of the main pipe pressure regulating valve.
The utility model has the advantages that:
the utility model discloses utilize balanced distribution controller of heat load and cascade pressure PID controller control steam turbine pipeline governing valve, according to the difference of female pipe pressure regulating valve preceding pressure and pressure target value as the distribution foundation, have the fast advantage of control speed, can solve the unstable condition of heat load rapid change control.
Drawings
Fig. 1 is a schematic view of the connection relationship of the present invention.
Fig. 2 is a schematic diagram of a connection relationship of the prior art.
Detailed Description
In the steam turbine generator unit, a steam inlet main pipe L0 is respectively connected with a steam inlet of a steam turbine through a plurality of branch steam inlet pipelines L1 which are arranged in parallel, a steam exhaust main pipe L3 is respectively connected with a steam exhaust port of the steam turbine through a plurality of branch steam exhaust pipelines L2 which are arranged in parallel, steam drives the steam turbine D1 to operate, the steam turbine drives a generator D2 to work, and exhaust steam supplies heat to a rear-end heat user.
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.
as shown in fig. 1, the heat load balance distribution control device for multiple steam turbine generator units comprises a plurality of pipeline regulating valves a1, a main pipe pressure regulating valve a2, a plurality of first pressure transmitters P1, a second pressure transmitter P2, a third pressure transmitter P3, a plurality of first pressure PID controllers 1, a second pressure PID controller 2 and a heat load balance distribution controller 3.
Each steam turbine is respectively provided with a pipeline regulating valve, a first pressure transmitter and a first pressure PID controller, the pipeline regulating valve is arranged on a branch steam inlet pipeline, the first pressure transmitter is arranged on a branch steam exhaust pipeline, and the signal input end of the first pressure PID controller is connected with a first pressure sensor and the control end of the first pressure PID controller is connected with the pipeline regulating valve.
The third pressure transmitter, the main pipe pressure regulating valve and the second pressure transmitter are sequentially arranged on the steam exhaust main pipe along the steam flowing direction, the third pressure transmitter is positioned at the inlet of the main pipe pressure regulating valve, and the second pressure transmitter is positioned at the outlet of the main pipe pressure regulating valve. The signal input end of the second pressure PID controller is connected with a second pressure sensor, and the control end of the second pressure PID controller is connected with a main pipe pressure regulating valve;
The signal input end of the heat load balance distribution controller is connected with the third pressure transmitter, the communication end of the heat load balance distribution controller is connected with the communication end of the second pressure PID controller, and meanwhile, the control end of the heat load balance distribution controller is connected with all the first pressure PID controllers.
The utility model discloses each part all can purchase the acquisition outward.
The utility model discloses a theory of operation is:
When an emergency occurs, if a heat load is greatly removed or added, the pipeline regulating valves of the turbines are controlled by a first pressure sensor in cascade according to the difference value between the pressure before the main pipe pressure regulating valve and a pressure target value as a distribution basis, and curve correction is carried out according to the difference value between rated pressure and the pressure before the main pipe pressure regulating valve so that the pressure value of the main exhaust pipe is in a stable preset value, and then the load of each turbine is adjusted according to the pressure value on the branch exhaust pipe; therefore, the steam exhaust main pipe can be controlled at a stable preset value.
Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (2)
1. the heat load balance distribution control device for the multiple turbo generator units comprises a plurality of pipeline regulating valves (A1) which are respectively arranged on a branch steam inlet pipeline of a steam turbine, a plurality of first pressure transmitters (P1) which are respectively arranged on a branch steam exhaust pipeline of the steam turbine, a plurality of first pressure PID controllers (1) matched with the pipeline regulating valves and the first pressure transmitters, a main pipe pressure regulating valve (A2) and a second pressure transmitter (P2) which are arranged on a main steam exhaust pipe, and a second pressure PID controller (2) matched with the main pipe pressure regulating valve and the second pressure transmitter; the method is characterized in that:
the device also comprises a heat load balance distribution controller (3) and a third pressure transmitter (P3) arranged on the steam exhaust main pipe; in each steam turbine, the signal input end of a first pressure PID controller is connected with a first pressure sensor, and the control end of the first pressure PID controller is connected with a pipeline regulating valve;
The second pressure transmitter and the third pressure transmitter are arranged at two ends of the master pipe pressure regulating valve; the signal input end of the second pressure PID controller is connected with a second pressure sensor, and the control end of the second pressure PID controller is connected with a main pipe pressure regulating valve;
the signal input end of the heat load balance distribution controller is connected with the third pressure transmitter, the control end of the heat load balance distribution controller is connected with all the first pressure PID controllers, and the communication end of the heat load balance distribution controller is connected with the communication end of the second pressure PID controller.
2. The heat load balance distribution control device for a plurality of steam turbine generator units according to claim 1, characterized in that: the second pressure transmitter is positioned at the outlet of the main pipe pressure regulating valve, and the third pressure transmitter is positioned at the inlet of the main pipe pressure regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354933.9U CN209742979U (en) | 2019-03-20 | 2019-03-20 | heat load balance distribution control device for multiple steam turbine generator units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354933.9U CN209742979U (en) | 2019-03-20 | 2019-03-20 | heat load balance distribution control device for multiple steam turbine generator units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209742979U true CN209742979U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920354933.9U Expired - Fee Related CN209742979U (en) | 2019-03-20 | 2019-03-20 | heat load balance distribution control device for multiple steam turbine generator units |
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| CN (1) | CN209742979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266868A (en) * | 2021-04-15 | 2021-08-17 | 国电汉川发电有限公司 | Multi-unit cooperative heat supply heat load intelligent distribution control system and method |
| CN114483225A (en) * | 2022-02-24 | 2022-05-13 | 上海领晟制冷科技有限公司 | Expansion machine multi-parallel combined ORC power generation system and control method thereof |
-
2019
- 2019-03-20 CN CN201920354933.9U patent/CN209742979U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266868A (en) * | 2021-04-15 | 2021-08-17 | 国电汉川发电有限公司 | Multi-unit cooperative heat supply heat load intelligent distribution control system and method |
| CN114483225A (en) * | 2022-02-24 | 2022-05-13 | 上海领晟制冷科技有限公司 | Expansion machine multi-parallel combined ORC power generation system and control method thereof |
| CN114483225B (en) * | 2022-02-24 | 2024-03-15 | 上海领晟制冷科技有限公司 | Multi-parallel combined ORC power generation system of expansion machine and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |