Monitoring method and system for tightening force of steam turbine red collar and high pressure inner cylinder red collar
A technology of steam turbines and red sleeves, applied in the direction of mechanical equipment, engine components, engine functions, etc.
Active Publication Date: 2017-09-22
SHANGHAI POWER EQUIP RES INST
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Problems solved by technology
In the design stage and use stage of the steam turbine, there is no suitable method for monitoring the tightening force between the red collar of the steam turbine and the red collar of the high-pressure inner cylinder.
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[0114] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0115] figure 1 It is a block diagram of the monitoring system of the tight force of the red collar of the steam turbine and the red collar of the high-pressure inner cylinder, and the monitoring system of the tight force of the red collar of the steam turbine and the red collar of the high-pressure inner cylinder includes a vernier caliper 1, a database server 2, a calculation server 3, a web page Server 4 and client browser ...
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The invention provides a method and system for monitoring the shrinkage fit tightening force of a turbine shrinkage ring and a high-pressure internal cylinder.The monitoring system comprises a database server, a computing server, a webpage server and a user-side browser.Firstly, the shrinkage fit tightening force of the high-pressure internal cylinder during delivery is worked out, in the use stage, the chord length between two measuring points on the shrinkage ring is measured during overhaul, the residual tightening force of the shrinkage ring is calculated, if the residual tightening force of the turbine shrinkage ring is smaller than the first shrinkage ring tightening force due to creep and relaxation, it shows that the shrinkage fit tightening force of the high-pressure internal cylinder is reduced and the shrinkage fit tightening force is not qualified; the thickness of a gasket between the shrinkage ring and the high-pressure internal cylinder is increased to guarantee that the shrinkage fit tightening force is not smaller than the first shrinkage fit tightening force value after overhaul, the shrinkage fit tightening force of the turbine shrinkage ring and the high-pressure internal cylinder is in a controlled state, the technical effect of controlling the shrinkage fit tightening force of the turbine shrinkage ring and the high-pressure internal cylinder is achieved, and a technical basis is provided for safe and economical operation of the turbine shrinkage ring and the high-pressure internal cylinder.
Description
technical field [0001] The invention relates to a monitoring method and system for the tightening force of a red collar of a steam turbine and a red collar of a high-pressure inner cylinder, and belongs to the technical field of steam turbines. Background technique [0002] At present, when the main steam pressure of an ultra-supercritical steam turbine reaches 28MPa to 38MPa, the high-temperature bolt strength of the faceted flange of the high-pressure inner cylinder is difficult to meet the requirements of the current steam turbine design specifications, and the high-pressure inner cylinder needs to adopt a middle-faced without overhang Flange barrel cylinder. The high-pressure inner cylinder of the steam turbine with the red collar is a commonly used cylindrical cylinder, which can not only withstand relatively high working pressure, but also has the characteristics of small thermal stress during startup, shutdown and load change. The cylindrical high-pressure inner cyli...
Claims
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IPC IPC(8): F01D21/00
CPCF01D21/00F01D21/003F05D2260/80
Inventor 史进渊邓志成汪勇危奇杨宇席会杰张成义林润达
Owner SHANGHAI POWER EQUIP RES INST