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A Protection System Based on Emergency Interruption of Steam Turbine

A critical blocking and protection system technology, applied in the direction of mechanical equipment, engine components, machines/engines, etc., can solve the problems of unit malfunction increase, malfunction, etc., to reduce the probability of malfunction, prevent malfunction, and output strong signals Effect

Active Publication Date: 2022-06-21
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the single-point protection, and the number of vibration probes in the general steam turbine unit is between 14-16, the vibration probe may malfunction due to signal interference or probe failure, which greatly increases the probability of unit malfunction

Method used

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  • A Protection System Based on Emergency Interruption of Steam Turbine
  • A Protection System Based on Emergency Interruption of Steam Turbine
  • A Protection System Based on Emergency Interruption of Steam Turbine

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Embodiment Construction

[0018] In order to make the technical means and effects realized by the present invention easy to understand, the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0019]

[0020] figure 1 It is a schematic diagram of the overall structure of the protection system based on the emergency shutdown of the steam turbine in the embodiment of the present invention.

[0021] like figure 1 As shown, the protection system 100 based on the emergency interruption of the steam turbine in this embodiment is used for the safety protection of the steam turbine, and includes two first lubricating oil pressure transmitters 10, two second lubricating oil pressure transmitters 20, and three lubricating oil pressure transmitters 20. Vacuum pressure transmitter 30 , ETS analog input board 40 , bearing vibration sensor 50 , front end device, TSI controller 70 , EST switch output board 80 and ETS controller 90 .

[0022] The tw...

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Abstract

The invention provides a protection system based on steam turbine emergency interruption, which is used for the safety protection of the steam turbine, including: two first lubricating oil pressure transmitters, used to collect the lubricating oil pressure analog signal at the front box; Two lubricating oil pressure transmitters, used to collect the lubricating oil pressure analog signal at the cranking place; three vacuum pressure transmitters, used to collect the vacuum pressure analog signal; ETS analog input board, used to receive and output Analog signal; bearing vibration sensor, used to collect vibration signal; pre-processor, used to convert signal into analog signal; TSI controller, used to judge signal and output switch signal; EST switch output board; and The ETS controller is connected with the ETS analog input board and the EST digital output board through a cable, and is used to receive the lubricating oil pressure analog signal, the lubricating oil pressure analog signal and the switching signal, and control according to the received signal The protection logic judgment is carried out in the device logic.

Description

technical field [0001] The invention belongs to the technical field of protection of large steam turbine units, in particular to a protection system based on emergency interruption of steam turbines. Background technique [0002] Turbine emergency interrupt system is an indispensable safety protection device to ensure the normal operation of steam turbine. During the operation of the steam turbine, when there is some critical situation that may cause damage to the operation of the unit, the ETS device can make all the inlet valves of the steam turbine close urgently to protect the safety of the steam turbine. Modern high-parameter and large-capacity steam turbine units are generally designed to use a pressure switch as a primary measuring element for low lubricating oil pressure and low vacuum pressure protection. The large vibration protection of steam turbine bearings generally adopts a single point protection of a certain steam turbine bearing vibration greater than the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/00
CPCF01D21/00
Inventor 王嘉颢程智海韩新海
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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