CN214700982U - Control system suitable for heat supply unit load is adjusted - Google Patents
Control system suitable for heat supply unit load is adjusted Download PDFInfo
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- CN214700982U CN214700982U CN202023291498.1U CN202023291498U CN214700982U CN 214700982 U CN214700982 U CN 214700982U CN 202023291498 U CN202023291498 U CN 202023291498U CN 214700982 U CN214700982 U CN 214700982U
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Abstract
The utility model discloses a control system suitable for heat supply unit load is adjusted, including heat supply unit, boiler controller, steam turbine side controller and heat supply side controller, be provided with coal supply conveyer, main steam governing valve and low pressure regulating valve in the heat supply unit, the boiler controller is transferred the conveyer with the coal supply and is connected, steam turbine side controller is connected with the main steam governing valve electricity, heat supply side controller is connected with the low pressure regulating valve electricity, boiler controller, steam turbine side controller and heat supply side controller intercommunication are connected, and the heat, the electric load coordination for the heat supply unit are adjusted and are provided the hardware support.
Description
Technical Field
The utility model belongs to the technical field of the heat supply unit, concretely relates to control system suitable for heat supply unit load is adjusted.
Background
As industrial structures are adjusted, more and more generator sets participate in heat supply. However, due to the thermoelectric coupling characteristic and the boiler-boiler coupling characteristic of the heating unit, the independent adjustment of the thermal load and the electric load is still a difficult problem. The adjustment process of the thermal load brings fluctuation to the generated power, and the change of the generated load also causes fluctuation of the heating load. And aiming at the problem that an effective load control system is lacked in the heat supply unit at present, a simple coordination control system is applied to the heat supply unit and cannot solve the problem that the heat and electric loads cannot be independently adjusted.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a control system suitable for heat supply unit load is adjusted.
The specific scheme is as follows:
the utility model provides a control system suitable for heat supply unit load is adjusted, includes heat supply unit, boiler controller, steam turbine side controller and heat supply side controller, be provided with coal feeding conveyer, main steam governing valve and low pressure regulating valve in the heat supply unit, boiler controller is transferred the conveyer with the coal feeding and is connected electrically, steam turbine side controller is connected with main steam governing valve electricity, heat supply side controller is connected with the low pressure regulating valve electricity, boiler controller, steam turbine side controller and heat supply side controller intercommunication connection.
The heat supply unit comprises a boiler, a steam turbine high-pressure cylinder, a steam turbine intermediate-pressure cylinder, a steam turbine low-pressure cylinder, a generator and a heat supply network, wherein a reheater is arranged in the boiler, a main steam regulating valve is fixed on the steam turbine high-pressure cylinder, the boiler is connected with a steam turbine high-pressure cylinder pipeline through the main steam regulating valve, and the steam turbine high-pressure cylinder is connected with the steam turbine intermediate-pressure cylinder pipeline through the reheater.
The steam outlet end on the steam turbine intermediate pressure jar still is provided with the extraction governing valve, the steam turbine intermediate pressure jar passes through the extraction governing valve and is connected with the heat supply network pipeline, low pressure governing valve sets up between steam turbine intermediate pressure jar and steam turbine low pressure jar, the steam outlet on the steam turbine intermediate pressure jar still passes through low pressure governing valve and steam turbine low pressure jar pipe connection, the steam turbine low pressure jar rotates with the generator and is connected.
Still be provided with condenser, feed pump and water supply control valve in the heat supply unit, the steam turbine low-pressure cylinder loops through condenser, feed pump and water supply control valve and is connected with the boiler pipeline.
The coal feeding conveyor is a conveying belt, and the boiler controller, the steam turbine side controller and the heat supply side controller are a PLC, a single chip microcomputer or an industrial personal computer.
The utility model relates to a load regulation control system for heat supply unit sets up boiler controller, steam turbine side controller and heat supply side controller in the heat supply unit, carries out the boiler respectively and gives the coal volume, and the control of steam turbine generating power and heat supply volume provides the hardware support for coal-fired volume, heat load and the electric load regulation of heat supply unit, has reduced the pressure oscillation in the heat supply unit.
Drawings
Fig. 1 is a schematic diagram of a heating unit load regulation system.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the implementations of the present invention, and not all implementations, and all other embodiments obtained by those skilled in the art without any inventive work are included in the scope of the present invention.
As shown in fig. 1, a control system suitable for load adjustment of a heat supply unit comprises the heat supply unit, a boiler controller 1, a steam turbine side controller 17 and a heat supply side controller 13, wherein a coal supply conveyor 4, a main steam regulating valve 16 and a low pressure regulating valve 11 are arranged in the heat supply unit, the boiler controller 1 is electrically connected with the coal supply conveyor 4, the steam turbine side controller 17 is electrically connected with the main steam regulating valve (16), the heat supply side controller 13 is electrically connected with the low pressure regulating valve 11, and the boiler controller 1, the steam turbine side controller 17 and the heat supply side controller 13 are in communication connection with each other.
The heat supply unit comprises a boiler 2, a steam turbine high-pressure cylinder 7, a steam turbine intermediate-pressure cylinder 8, a steam turbine low-pressure cylinder 9, a generator 10 and a heat supply network 14, wherein a reheater 3 is arranged in the boiler 2, a main steam regulating valve 16 is fixed on the steam turbine high-pressure cylinder 7, the boiler 2 is connected with the steam turbine high-pressure cylinder 7 through a main steam regulating valve 16 in a pipeline mode, and the steam turbine high-pressure cylinder 7 is connected with the steam turbine intermediate-pressure cylinder 8 through the reheater 3 in a pipeline mode.
And the steam exhaust port end on the steam turbine intermediate pressure cylinder 8 is also provided with a steam extraction regulating valve 15, and the steam turbine intermediate pressure cylinder 8 is connected with a heat supply network 14 through a pipeline of the steam extraction regulating valve 15.
The low pressure regulating valve 11 is arranged between the turbine intermediate pressure cylinder 8 and the turbine low pressure cylinder 9, and a steam outlet on the turbine intermediate pressure cylinder 8 is connected with the turbine low pressure cylinder 9 through a pipeline of the low pressure regulating valve 11.
The low-pressure turbine cylinder 9 is rotationally connected with a generator 10.
Still be provided with condenser 12, feed pump 6 and feedwater control valve 5 in the heat supply unit, steam turbine low pressure cylinder 9 loops through condenser 12, feed pump 6 and feedwater control valve 5 and boiler 2 pipe connection.
The coal feeding conveyor 4 is a conveyor belt.
The boiler controller 1, the steam turbine side controller 17 and the heat supply side controller 13 are a PLC, a single chip microcomputer or an industrial personal computer.
The control system suitable for the load regulation of the heat supply unit has the following specific working process:
the boiler 2 conveys the generated high-temperature steam to a main steam regulating valve 16 through a pipeline, a steam turbine side controller 17 regulates the opening degree of the main steam regulating valve 16, so that the high-temperature steam enters a steam turbine high-pressure cylinder 7, the steam is compressed to high-pressure high-temperature steam in the steam turbine high-pressure cylinder 7, then the steam turbine high-pressure cylinder 7 discharges the high-temperature high-pressure steam to a reheater 3, the steam is further heated through the reheater 3, the heated steam enters a steam turbine intermediate-pressure cylinder 8, the steam pushes the steam turbine intermediate-pressure cylinder 7 to do work and is output in two ways, one way is conveyed to a heat supply network through a steam extraction regulating valve 15 to supply heat for a heat supply network user, the other way enters a steam turbine low-pressure cylinder 9 through a low-pressure regulating valve 11, in the steam turbine low-pressure cylinder 9, the steam pushes the steam turbine low-pressure cylinder 9 to do work, and the steam turbine low-pressure cylinder 9 drives a generator 10 to rotate, converting the mechanical energy into electrical energy.
The steam after the work is discharged from the turbine low pressure cylinder 9, the steam discharged from the turbine low pressure cylinder 9 is condensed into water in the condenser 12, and the condensed water is sent to the boiler 2 again through the feed water pump 6 and the feed water control valve 5, thereby completing one operation cycle.
The heat supply unit is respectively provided with a boiler controller 1 for controlling the coal supply amount of the boiler, a steam turbine side controller 17 for controlling the opening of the main steam regulating valve 16, and the heat supply controller 13 for regulating the opening of the low pressure regulating valve 11.
The coal supply amount determines the amount of steam generated by the steam turbine, the opening of the main steam regulating valve 16 determines the amount of steam pressure entering the high-pressure cylinder of the steam turbine, and in turn determines the amount of generated power, and the opening of the low-pressure regulating valve 11 determines the amount of steam discharged by the intermediate-pressure cylinder 7 of the steam turbine, and in turn determines the amount of heat supplied to the heat supply network. When the heat load and the electric load are changed, namely the heat supply load and the power generation demand are changed, the boiler controller 1, the steam turbine side controller 17 and the heat supply side controller 13 are in coordination control, the boiler controller 1 adjusts the coal supply amount, the steam turbine side controller 17 adjusts the opening of the main steam adjusting valve 16, and the heat supply side controller 13 adjusts the opening of the low-pressure adjusting valve 11, so that the fluctuation change of the heat supply unit is minimum after the heat load and the electric load are changed.
In the load control system suitable for the heat supply unit described in this embodiment, control programs may be stored in the boiler controller 1, the steam turbine side controller 17, and the heat supply side controller 13 to improve fluctuation of the heat load of the heat supply unit and the front pressure of the steam turbine in the process of adjusting the electrical load, and fluctuation of the electrical load of the heat supply unit and the front pressure of the steam turbine in the process of adjusting the thermal load, so that a favorable guarantee is provided for the supply of the heat and electrical loads of the heat supply unit.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a control system suitable for heat supply unit load is adjusted which characterized in that: including heat supply unit, boiler controller (1), steam turbine side controller (17) and heat supply side controller (13), be provided with in the heat supply unit and supply coal conveyer (4), main steam control valve (16) and low pressure regulating valve (11), boiler controller (1) is connected with supply coal conveyer (4) electricity, steam turbine side controller (17) is connected with main steam control valve (16) electricity, heat supply side controller (13) is connected with low pressure regulating valve (11) electricity, boiler controller (1), steam turbine side controller (17) and heat supply side controller (13) intercommunication connection.
2. A control system adapted for heating unit load regulation according to claim 1, wherein: the heat supply unit comprises a boiler (2), a steam turbine high-pressure cylinder (7), a steam turbine intermediate-pressure cylinder (8), a steam turbine low-pressure cylinder (9), a generator (10) and a heat supply network (14), wherein a reheater (3) is arranged in the boiler (2), a main steam regulating valve (16) is fixed on the steam turbine high-pressure cylinder (7), the boiler (2) is connected with the steam turbine high-pressure cylinder (7) through a main steam regulating valve (16) in a pipeline mode, and the steam turbine high-pressure cylinder (7) is connected with the steam turbine intermediate-pressure cylinder (8) through the reheater (3) in a pipeline mode.
3. A control system adapted for heating unit load regulation according to claim 2, wherein: the steam outlet end on the steam turbine intermediate pressure cylinder (8) still is provided with extraction governing valve (15), steam turbine intermediate pressure cylinder (8) are connected with heat supply network (14) pipeline through extraction governing valve (15), low pressure governing valve (11) set up between steam turbine intermediate pressure cylinder (8) and steam turbine low pressure cylinder (9), the steam outlet on steam turbine intermediate pressure cylinder (8) still presses cylinder (9) pipe connection through low pressure governing valve (11) and steam turbine low pressure, steam turbine low pressure cylinder (9) rotate with generator (10) and are connected.
4. A control system adapted for heating unit load regulation according to claim 2, wherein: still be provided with condenser (12), feed pump (6) and water supply control valve (5) among the heat supply unit, steam turbine low pressure cylinder (9) loop through condenser (12), feed pump (6) and water supply control valve (5) and boiler (2) pipe connection.
5. A control system adapted for heating unit load regulation according to claim 1, wherein: the coal feeding conveyor (4) is a conveyor belt, and the boiler controller (1), the steam turbine side controller (17) and the heat supply side controller (13) are a PLC, a single chip microcomputer or an industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023291498.1U CN214700982U (en) | 2020-12-30 | 2020-12-30 | Control system suitable for heat supply unit load is adjusted |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023291498.1U CN214700982U (en) | 2020-12-30 | 2020-12-30 | Control system suitable for heat supply unit load is adjusted |
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| CN214700982U true CN214700982U (en) | 2021-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594776A (en) * | 2020-12-30 | 2021-04-02 | 华电郑州机械设计研究院有限公司 | Control method and system suitable for load adjustment of heat supply unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594776A (en) * | 2020-12-30 | 2021-04-02 | 华电郑州机械设计研究院有限公司 | Control method and system suitable for load adjustment of heat supply unit |
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