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Large protection signal interface device for shaft vibration of steam turbine

A technology for protecting signals and interface devices, applied in the field of signal transmission, can solve the problems of inconvenient operation and maintenance of the steam turbine protection system, complex structure of relay expansion cabinets, and numerous interface signals, so as to reduce the risk of misoperation and refusal to operate, and has a simple structure. , the effect of simplifying the interface structure

Active Publication Date: 2019-05-21
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems that the existing relay expansion cabinet has complex structure, many interface signals, many fault points, low reliability, and inconvenient operation and maintenance of the steam turbine safety monitoring and protection system

Method used

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  • Large protection signal interface device for shaft vibration of steam turbine
  • Large protection signal interface device for shaft vibration of steam turbine
  • Large protection signal interface device for shaft vibration of steam turbine

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0023] Specific implementation mode one: refer to Figure 1 to Figure 6 Describe this embodiment in detail, the steam turbine shaft vibration protection signal interface device described in this embodiment includes two relay card frames 1 and four relay cards 2,

[0024] The structures of the two relay card frames 1 are the same, and the front surface of each relay card frame 1 is provided with two relay card slots 3, and each relay card 2 enters a relay card frame 1 through a relay card slot 3, The adjacent side walls of the two relay card frames 1 are connected together, so that the two relay card frames 1 are connected as a whole;

[0025] The structures of the four relay cards 2 are the same, and each relay card 2 includes an RS232 programming configuration interface 7, a relay card controller main board 8, a relay card relay board 9, a controller 11 and a solid state relay 12,

[0026] The front panel of each relay card 2 is provided with an RS232 programming configurati...

Embodiment 1

[0038] as attached figure 2 As shown, the interface device mainly includes two relay card frames 1 of model IF30 and four relay cards 2 of model A30.

[0039] The two relay card frames 1 of model IF30 are mutually redundant in function and structure, and can be merged and connected through the frame connection hole 18 on the frame back panel;

[0040] After the two relay card frames 1 of model IF30 are merged and connected, they can be installed on the bracket of the steam turbine safety monitoring system cabinet and fixed through the frame mounting holes 17 .

[0041] After the frame is fixed, insert the 4 A30 relay card 2 into the slot 5 along the A30 relay card installation slideway 4, and confirm that the signal connector 10 of each A30 relay card 2 is indeed inserted into the A30 relay card. Slot connector 5 is well connected;

[0042] According to attached Figure 5 Complete the signal wiring between the steam turbine safety monitoring system, the large shaft vibration...

specific Embodiment approach 2

[0044] Specific embodiment 2: This embodiment is a further description of the steam turbine shaft vibration protection signal interface device described in specific embodiment 1. In this embodiment, each relay card 2 also includes a relay card signal connector 10,

[0045] Two groups of relay card slot connectors 5 are embedded in the back of each relay card frame 1,

[0046] Each relay card controller main board 8 and each relay card relay board 9 are respectively inserted into a relay card slot connector 5 through a relay card signal connector 10 .

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Abstract

The invention discloses a large protection signal interface device for the shaft vibration of a steam turbine, and relates to the field of signal transmission. The invention aims to solve the problemsthat a relay extension cabinet in the prior art is complex in structure, various in interface signals, multiple in fault points, low in reliability and inconvenient to operate and maintain security monitoring and protection systems of the steam turbines. The front panel of each relay card is provided with an RS232 programming configuration interface, the external equipment inputs software logic programming configuration to the relay cards through the RS232 programming configuration interface, a controller is arranged on a main board of each relay card controller, each controller is used for receiving 11 shaft vibration large trip signals and 22 shaft vibration large alarm signals, processing the input 11 shaft vibration large trip signals and the input 22 shaft vibration large alarm signals according to the software logic programming configuration and outputting driving instructions, and the types of the 11 shaft vibration large trip signals received by the two controllers in each relay card frame are different. The large protection signal interface device for the shaft vibration of a steam turbine is used for security monitoring of the steam turbines.

Description

technical field [0001] The invention relates to a steam turbine shaft vibration large protection signal interface device between a steam turbine safety monitoring system and a quadruple steam turbine protection system. It belongs to the field of signal transmission. Background technique [0002] In nuclear power projects such as Sanmen and Haiyang, the steam turbine generator set has 11 bearings in total, and the steam turbine safety monitoring system monitors the shaft vibration parameters of the steam turbine in the X and Y directions on both sides of each bearing, thus forming 11 bearings. Shaft vibration signal (X direction) and 11 shaft vibration signals (Y direction). The steam turbine safety monitoring system needs to send the monitored 22 large shaft vibration alarm signals (including X and Y directions) and 22 large shaft vibration trip signals (including X and Y directions) to the quadruple steam turbine protection system , to complete the logic operation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 崔栋良孙智超王靖博邵琦任晓岑
Owner HARBIN TURBINE