Model selection of steam turbine reluctance speed probe

The following aspects need to be considered in the selection of turbine magneto-resistive speed probe:
Speed range: when selecting the speed probe, select the appropriate model according to the speed range of the turbine to ensure that the maximum speed of the probe is not lower than the maximum speed of the turbine.
Ambient temperature: When selecting the speed probe, it is necessary to consider the ambient temperature of the probe and select the appropriate model to ensure that the probe can work normally.
Installation method: Different types of speed sensors have different installation methods, including direct installation, clamping installation, screw installation, etc. You need to select the speed probe suitable for your own installation method.
Signal output: When selecting the speed probe, it is necessary to consider whether its signal output mode is suitable for its own control system, such as whether analog signal output or digital signal output is required.
According to different manufacturers and different models, the price of the magneto-resistive speed probe of steam turbine will vary, generally between several hundred and one thousand RMB.

Characteristics of speed probe of steam turbine

The speed probe of steam turbine generally needs to work in harsh environment such as high temperature, high pressure, strong vibration and strong electromagnetic interference, so it has the following characteristics:
High temperature resistance: the speed probe needs to withstand high temperature environment, and the common thermal stability is required to reach above 200 ℃.
High pressure resistance: the turbine needs to withstand high pressure environment when working, and the speed probe needs to have high pressure resistance
Vibration resistance: the steam turbine will produce strong vibration when it works. The speed probe needs to have anti-vibration performance to ensure data accuracy and long-term stability.
Corrosion resistance: there may be corrosive media inside the turbine, and the speed probe needs to have corrosion resistance.
Anti-interference: strong electromagnetic interference will be generated inside the turbine, and the speed probe needs to have anti-interference performance to ensure the accuracy of data.
High accuracy: the speed probe needs to have high accuracy to ensure the accuracy and stability of the data. At the same time, it also needs to have certain sensitivity to adapt to different speed ranges.
Convenient installation: the speed probe needs to be easy to install, disassemble and maintain to save labor and time costs.

Advantages and disadvantages of steam turbine low-speed speed probe

The turbine low-speed speed probe is a sensor used to measure the low-speed speed, which is usually used for the monitoring and control of the turbine shafting. Its main advantages and disadvantages are as follows:
Advantage:
High sensitivity: the low-speed speed probe has high speed measurement accuracy at low speed, can measure the small range of speed change, and can provide more accurate speed information.
Wide measuring range: the low-speed speed probe has a wide measuring range, usually measuring the speed range from hundreds to thousands of revolutions, which is applicable to the monitoring and control of low-speed speed sensor.
High reliability: the low-speed speed probe adopts high-precision sensor elements and advanced signal processing technology, which has high reliability and stability.
Disadvantages:
High cost: compared with other types of speed probes, low-speed speed probes have higher cost and require more complex sensor elements and signal processing technology.
High installation position requirements: the low-speed speed probe needs to be matched with the position, direction and other factors of the measured object during installation, otherwise the measurement accuracy will be affected.
High environmental requirements: the low-speed speed probe has high environmental requirements during use, such as avoiding vibration and high temperature, otherwise the accuracy and service life of the sensor will be affected.