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Extraction regulation type turbo generator unit, load control method and primary frequency regulation method

A technology for steam turbine generator set and extraction steam regulation, which is applied to steam engine installations, engine components, machines/engines, etc., can solve problems such as throttling loss of steam flow, vibration of steam turbine shafting, etc., so as to reduce economic losses and reduce heat consumption. , the effect of reducing heat consumption

Active Publication Date: 2017-07-28
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] With this adjustment method, the steam regulating device can be fully opened, most of the steam has no throttling loss, but part of the steam flow through the supplementary steam valve still has throttling loss
On the other hand, the use of steam intake valve load adjustment method may cause vibration of steam turbine shafting

Method used

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  • Extraction regulation type turbo generator unit, load control method and primary frequency regulation method
  • Extraction regulation type turbo generator unit, load control method and primary frequency regulation method
  • Extraction regulation type turbo generator unit, load control method and primary frequency regulation method

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Embodiment 1

[0049] Such as figure 1 As shown, the turbogenerator set for steam extraction adjustment in this embodiment includes a steam turbine 1, a generator 2, a condenser 5, a low-pressure heating system 3 and a load regulation system, and the generator 2 is driven by the steam turbine 1, and the steam turbine 1 is equipped with There are steam extraction ports 10 and steam exhaust ports 11, and the steam extraction ports are respectively connected to the low-pressure heater in the low-pressure heating system 3 through steam extraction pipelines, wherein all steam extraction pipelines are equipped with extraction steam flow regulating devices 9, Of course, in practical applications, it is also possible to install the extraction steam flow regulating device only on part of the extraction steam pipeline according to the work requirements, which will not be described in detail here. The exhaust port is connected to the input port of the condenser 5 through the exhaust pipeline, and the o...

Embodiment 2

[0062] Present embodiment except following features other structures are with embodiment 1: see figure 2 , the present embodiment adds a deaerator 12 in the turbogenerator set regulated by steam extraction, the input end of the deaerator is respectively connected with the output port of the steam turbine and the output port of the low-pressure heating system, and the output end is connected with the deaerator through the deaeration pipeline. The boiler is connected, and a feed water pump 13 is provided on this pipeline.

[0063] The extraction steam flow regulating device may be installed on the connecting pipe between the deaerator and the turbine extraction steam. The extraction steam flow regulating device is connected with the load regulating system. The above-mentioned extraction steam flow regulating device can participate in the load regulation and primary frequency regulation functions of the steam turbine.

Embodiment 3

[0065] Other structures of this embodiment are the same as embodiment 2 except the following features: see image 3 In this embodiment, a high-pressure heating system 14 is added to the steam-extraction regulated steam turbine generator set. The high-pressure heating system is installed on the water supply pipeline. The input port is connected to the output port of the feed water pump, and the water side output port is connected to the boiler.

[0066] The high-pressure heating system 14 includes several high-pressure heaters connected in series, and an extraction steam flow regulating device may be installed on all or part of the steam extraction pipelines between the high-pressure heater and the steam turbine. The extraction steam flow regulating device is connected with the load regulating system. The above-mentioned extraction steam flow regulating device can participate in the load regulation and primary frequency regulation functions of the steam turbine.

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Abstract

The invention discloses an extraction regulation type turbo generator unit, as well as a load control method and a primary frequency regulation method based on the turbo generator unit. The turbo generator unit comprises a steam turbine, an electric generator, a condenser, a steam heating system and a load regulation system; the electric generator is driven by the steam turbine; an extraction opening formed in the steam turbine is connected with the steam heating system through an extraction pipeline; an exhaust opening formed in the steam turbine is connected with the condenser; steam entering from the extraction pipeline and condensation water entering from a condensation water pipeline are subjected to heat exchange through the steam heating system and then conveyed into a boiler; the condensation water is heated by the boiler, and thus, steam with the appropriate parameter is produced; the output end of the boiler is in corresponding connection with the input end of the steam turbine through the steam pipeline; and the load regulation system is connected with a steam regulation device on an input end pipeline of the steam turbine, and an extraction flow regulation device on the extraction pipeline so as to control the opening degree of the steam regulation device and the opening degree of the extraction flow regulation device. According to the extraction regulation type turbo generator unit, as well as the load control method and the primary frequency regulation method based on the turbo generator unit, control over the load of the turbo generator unit and primary frequency regulation can be achieved, and the advantages that the throttling loss is small, and the response time is short are achieved.

Description

technical field [0001] The invention relates to the research field of steam turbine generator sets, in particular to a steam turbine generator set regulated by steam extraction, and a load control method and a primary frequency regulation method based on the set. Background technique [0002] Steam turbine is one of the prime movers commonly used in the field of industrial production, which can be used to drive various loads (such as: fans, water pumps, generators, etc.). In the process of electric power production, steam turbines are often used to drive generators to form turbogenerator sets to supply power to the grid (or a single electric user or multiple electric users). [0003] The output power of the steam turbine generator set needs to meet the power requirements of the power grid in real time. For this reason, the steam turbine should be equipped with a load regulation system. When the demand power of the power grid changes, the steam turbine load regulation system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/34F01D17/00F01K7/38
Inventor 裴顺杨桂罗颖坚刘宇穗范永春
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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