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Shanghai Hangzhen Instrument Co., Ltd
HE-TTM03 intelligent tachometer impactor monitoring
NegotiableUpdate on 03/12
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Overview
HE-TTM03 intelligent tachometer impact sub monitoring is an important operational monitoring parameter for steam turbine units. When the unit speed reaches 110% of the rated speed, the steam turbine should be shut down urgently. To achieve this goal, the unit security system is equipped with an emergency governor in the front bearing box of the steam turbine. The emergency governor impactor is "ejected" by the centrifugal force generated at 110% of the rated speed, which can cause the steam turbine to shut down urgently.
Product Details
HE-TTM03 intelligent tachometer impactor monitoringIt is an important operating monitoring parameter for steam turbine units. When the unit speed reaches110%At rated speed,The turbine should be shut down urgently. To achieve this goal, the unit security system is equipped with an emergency governor in the front bearing box of the steam turbine, and the emergency governor impactor is located110%Under the centrifugal force generated at rated speed, the turbine can be "knocked out" to cause emergency shutdown.
Before the new unit is put into operation or the unit is connected to the grid for each major overhaul, the speed of the impactor action must be measured. To prevent collision and jamming, the manufacturer stipulates that the unit should operate continuously2000An impact sub fuel injection activity test should be conducted after hours. But the installation location of the emergency governor cannot observe the state of its impactor "striking" and "retracting",It is also impossible to determine the rotational speed at which the impactor acted.
Turbine speed/The impactor monitoring device adopts microcomputer intelligent technology to solve the problems of speed monitoring and impactor monitoring together,Normally, the turbine speed is displayed and the "highest" speed of the unit is captured and recorded. When the emergency governor collides with the "striking" or "retracting" sub, the internal memory function stores the speed at the time of "striking" or "retracting" in the instrument. By pressing the "setting" button on the panel, the speed at the time of "highest", "striking" or "retracting" can be conveniently displayed in the display window.
HE-TTM03 intelligent tachometer impactor monitoring
