Real-time monitoring system and method for eccentric oscillation of cylinder body of 50MW steam turbine

A real-time monitoring system, eccentric swing technology, applied in the directions of machines/engines, mechanical equipment, engine components, etc., can solve problems such as inability to monitor real-time, achieve the effect of improving the overall operating safety factor and avoiding further deterioration of the situation

Active Publication Date: 2020-05-08
ZHEJIANG ZHENENG TECHN RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot monitor the problem in real time when the eccentric swing phenomenon occurs in the cylinder block of the steam turbine, and provides a real-time monitoring system and monitoring method for the eccentric swing of the cylinder block of the 50MW steam turbine

Method used

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  • Real-time monitoring system and method for eccentric oscillation of cylinder body of 50MW steam turbine
  • Real-time monitoring system and method for eccentric oscillation of cylinder body of 50MW steam turbine
  • Real-time monitoring system and method for eccentric oscillation of cylinder body of 50MW steam turbine

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specific Embodiment approach 1

[0034] Specific implementation mode one: the following combination Figure 1-Figure 3 Describe this embodiment, a real-time monitoring system for the eccentric swing of a 50MW steam turbine cylinder block described in this embodiment, the real-time monitoring system includes a remote measuring device and a mechanical displacement measuring device;

[0035] Both the remote measuring device and the mechanical displacement measuring device are installed on the front platform 1 of the steam turbine fuselage;

[0036] The remote measuring device includes a distance measuring rod 3, multiple pairs of distance measuring sensors 4, a data acquisition device 5 and a DCS host computer 6;

[0037] The mechanical displacement measuring device includes many pairs of mechanical displacement measuring instruments 7, and the logarithm of the mechanical displacement measuring instrument 7 is the same as that of the ranging sensor 4;

[0038] The distance measuring rod 3 is installed on the fr...

specific Embodiment approach 2

[0044] Specific implementation mode two: the following combination Figure 1-Figure 3 Describe this embodiment, the real-time monitoring method of a kind of 50MW steam turbine cylinder eccentric swing described in this embodiment, this real-time monitoring method is realized based on a kind of real-time monitoring system of 50MW steam turbine cylinder eccentric swing, the specific process of this real-time monitoring method is :

[0045] S1, two pairs of distance measuring sensors 4 respectively measure the distance with the distance measuring pole 3 in real time;

[0046] S2, the data acquisition device 5 collects the distance measured by the ranging sensor 4 in S1 in real time, and sends the real-time data to the DCS host computer 6;

[0047] S3, the DCS host computer 6 calculates and obtains the left offset and the right offset of the steam turbine cylinder block 2;

[0048] S4, the DCS upper computer 6 displays the left offset and the right offset obtained by S3 on the m...

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Abstract

The invention discloses a real-time monitoring system and method for eccentric oscillation of a cylinder body of a 50MW steam turbine, belongs to the field of monitoring of the running state of the steam turbine, and aims to solve the problem that the prior art cannot monitor the eccentric oscillation of the cylinder body of the steam turbine in real time when the cylinder body of the steam turbine has an eccentric oscillation phenomenon. The system comprises a remote measuring device and a mechanical displacement measuring device which are mounted at a platform at the front end of a steam turbine body; the remote measuring device comprises a distance measuring rod, a plurality of pairs of distance measuring sensors, data acquisition devices and a DCS upper computer; and the distance measuring rod is arranged at the front end of the cylinder body of the steam turbine, the center lines are parallel to each other, each pair of distance measuring sensors is symmetrically arranged along the center line of the distance measuring rod, the distance measuring sensors respectively measure the distance with the distance measuring rod in real time, the data acquisition devices send the real-time distance data to the DCS upper computer, and the DCS upper computer calculates and obtains the offset of the cylinder body of the steam turbine and displays the offset on a monitoring screen. Thereal-time monitoring system and method for eccentric oscillation of the cylinder body of the 50MW steam turbine are used for monitoring the eccentric oscillation of the steam turbine cylinder body ofthe small steam turbine.

Description

technical field [0001] The invention relates to a real-time monitoring system and a monitoring method for the eccentric swing of a cylinder body of a 50MW steam turbine, belonging to the field of monitoring the operating state of the steam turbine. Background technique [0002] At present, 50MW steam turbines are widely used in industrial production fields, and real-time monitoring of their operating status is very important. Taking 50MW thermal power units as an example, because of their flexible operating conditions, most of them are used for self-contained production or power grid peak regulation. Moreover, it is often scheduled to start and stop frequently to adapt to the load change of the power grid, which brings great challenges to the safe and stable operation of the steam turbine unit. [0003] Under normal circumstances, due to the different thicknesses of the rigid bodies in various parts of the steam turbine, it is difficult to ensure that the temperature change...

Claims

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Application Information

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IPC IPC(8): F01D21/00F01D15/10F01D25/00
CPCF01D21/003F01D15/10F01D25/00
Inventor 叶青童小忠吴春年石家魁赵卫正居国腾李丰均徐新果孙海龙姚坤万杰
Owner ZHEJIANG ZHENENG TECHN RES INST
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