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A control method for a steam turbine unit driven by a boiler

A technology for a steam turbine unit and a control method, which is applied to engine components, machines/engines, and mechanical equipment, etc., can solve problems such as reduced economy and reduced operating efficiency, and achieve improved operating economy, reduced plant power consumption, and reduced energy. Effects of Transform Steps

Active Publication Date: 2017-01-04
门冉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: the purpose of the present invention is that the present invention aims to make full use of the steam turbine of the steam turbine generator set, and solve the problem that the operating efficiency of the currently applied water supply implementation method decreases under variable loads by designing a boiler-driven steam turbine set and its control method , the technical problem of economical reduction

Method used

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  • A control method for a steam turbine unit driven by a boiler
  • A control method for a steam turbine unit driven by a boiler
  • A control method for a steam turbine unit driven by a boiler

Examples

Experimental program
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Embodiment 1

[0047] Such as figure 1 As shown, the hydraulic planetary gear compound transmission device 7 in this embodiment is an RWE type hydraulic planetary gear transmission compound device, but this embodiment can also use an RW type hydraulic planetary gear compound transmission device without affecting Implementation of this embodiment. The steam turbine set driven by the boiler in this embodiment is composed of a steam turbine high and medium pressure combined cylinder 1, a first steam turbine low pressure cylinder 2, a second steam turbine pneumatic cylinder 3, a steam turbine turning device 4, a generator 5, a feed water front pump 6, a hydraulic planetary The compound gear transmission device 7 and the water feed pump 8 are sequentially connected in series through the main shaft 9 of the turbogenerator set, the feed water prepump 6 is connected to the water supply pipe, and the outlet of the feed water prepump 6 is connected to the inlet of the feed water pump 8, as figure 1 T...

Embodiment 2

[0052] Such as image 3 As shown, the hydraulic planetary gear compound transmission device 7 in this embodiment is a RW type hydraulic planetary gear transmission compound device, but this embodiment can also use an RWE type hydraulic planetary gear compound transmission device without affecting Implementation of this embodiment. The steam turbine set driven by the boiler in this embodiment consists of a steam turbine high and medium pressure combined cylinder 1, a first steam turbine low pressure cylinder 2, a second steam turbine pneumatic cylinder 3, a steam turbine barring device 4, a generator 5, a hydraulic planetary gear compound transmission device 7 and The feed water pump 8 is sequentially connected in series through the main shaft 9 of the turbogenerator set. This embodiment is also provided with a feedwater prepump motor 10 and a feedwater prepump 6 connected sequentially through the shaft system 12 of the feedwater prepump group, the feedwater prepump 6 is conne...

Embodiment 3

[0057] Adopt the device of embodiment 1, as Figure 8 As shown, the controller controls the feed water flow as follows:

[0058] 1) Read the water supply pressure P under the target load of the unit 1 ,

[0059] 2) will P 1 and measured water pressure value P 0 , to compare in the controller;

[0060] 3) If P 1 0 If the comparison result is "Yes", the controller sends a signal to the hydraulic planetary gear compound transmission to increase the transmission ratio of the hydraulic planetary gear compound transmission by X 1 , P 0 increase, and then the measured water supply pressure value P 0 feedback to the controller;

[0061] 4) If P 10 If the comparison result is "No", the controller sends a signal to the hydraulic planetary gear compound transmission to reduce the transmission ratio of the hydraulic planetary gear compound transmission by X 1 , P 0 Decrease, then the measured water supply pressure value P 0 feedback to the controller;

[0062] 5) Repeat steps...

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Abstract

The invention discloses a novel turboset driven through a boiler. The novel turboset driven through the boiler comprises a turbine, a water feed pump and a hydraulic planetary gear composite transmission device. The turbine is provided with a turbo generator unit main shaft and drives the water feed pump through the hydraulic planetary gear composite transmission device, and the water feed pump is connected to the boiler. When the novel turboset driven through the boiler operates under variable working conditions, water feeding economical efficiency is improved; specifically, under the variable working conditions, the efficiency of dragging the water feed pump to operate by the hydraulic planetary gear composite transmission device is higher than that of dragging the water feed pump to operate by a hydraulic coupler, and water feeding economical efficiency is improved.

Description

technical field [0001] The invention relates to a steam turbine unit driven by a boiler and a control method thereof, and relates to the technical field of energy saving and efficiency improvement of the steam turbine generator unit. Background technique [0002] In my country, the configuration methods of the water supply system of thermal power units are as follows: equipped with 2×50% maximum continuous evaporation capacity (MCR) steam-driven feed water pump and equipped with a 30% MCR electric water feed pump, under normal circumstances, the steam-driven water pump participates in the water flow The realization of control and adjustment, the electric feed water pump participates in the feed water control and adjustment during the start / stop process of the unit; equipped with 2×50% MCR electric feed water pumps and equipped with a 30%-50% BMCR standby electric water feed pump; steam driven The water supply method is driven by a special small steam turbine to drive the water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D15/08F01D15/10F01D21/14
Inventor 门冉盛昌栋张振魏昌淼樊双陈媛范鹏慧李波
Owner 门冉
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