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A real-time monitoring system and monitoring method for the eccentric swing of the cylinder body of a 50mw steam turbine
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A real-time monitoring system and eccentric swing technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as inability to monitor in real time, improve the overall operation safety factor, avoid further deterioration of the situation, and eliminate the impact of measurement accuracy Effect
Active Publication Date: 2022-04-29
ZHEJIANG ZHENENG TECHN RES INST +2
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[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
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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
A real-time monitoring system and monitoring method for the eccentric swing of a cylinder block of a 50MW steam turbine belongs to the field of steam turbine operation status monitoring. The invention includes a remote measuring device and a mechanical displacement measuring device; both are installed at the front end platform of the steam turbinefuselage; the remote measuring device includes a distance measuring rod, multiple pairs of distance measuring sensors, a data acquisition device and a DCS upper computer; the distance measuring rod is installed on the steam turbine At the front end of the cylinder, the center lines are parallel to each other. Each pair of distance measuring sensors is arranged symmetrically along the center line of the distance measuring rod. The distance measuring sensors respectively measure the distance from the distance measuring rod in real time. The data acquisition device sends the real-time distance data to the DCS host computer, and the DCS The upper computer calculates the offset of the steam turbine cylinder and displays it on the monitor screen. The invention is used for monitoring the deflection of the steam turbine cylinder body of the 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...
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