New Product Release: PT5000 Machine Vibration Simulator

A machine vibration simulator is a scaled down model similar to a steam turbine generator in a power plant. This is an experimental device that enables you to gain practical experience on the dynamic behavior of turbine rotors and the oil film phenomenon of sliding bearings, and to study vibration control methods.

This simulation test bench is a model that simulates a two-stage turbine, namely a low-pressure (low pressure) turbine and a P (medium pressure) turbine. There are 8 blades on each side of each rotor stage, for a total of 16 blades. The I-part is resonance, which can generate up to the second critical velocity mode. By using an electric motor instead of a turbine generator, resonance can be clearly identified by performing a temperature distribution diagram of rotor vibration during start stop testing. By applying different clearances of bearings or shapes of sliding bearings, we study under what conditions oil film vortex and oil film oscillation occur, and adjust the lubricating oil pressure, temperature, and preload force appropriately to simulate and reproduce oil film vortex and oil film oscillation, and find conditions to control oil film vortex and oil film oscillation.

1: Introduction

1. The possibility of conducting various experiments

Similar to a steam turbine, a simulation test bench equipped with a long axis rotor can use sliding bearings to reproduce all kinds of vibration phenomena occurring in the rotor. You can test the mechanical vibration phenomena that occur in the rotor, such as unbalance, shaft misalignment, blade friction and seal friction, looseness, and fluid phenomena. The TSBT series is specifically designed to test oil film phenomena based on the design and operating conditions of sliding bearings. Installing multiple rotor discs instead of turbine blades on the shaft can produce the second mode (the second critical speed), which can reproduce the fluid phenomenon (oil whirl and oil oscillation) of sliding bearings. Oil film vortex and oil film oscillation are important unstable phenomena in rotor supported oil film bearings. It is necessary to adjust the bearing load (rotor disc weight), bearing clearance (bearing seat selection), and oil pressure (oil supply valve adjustment) appropriately. If selected, oil film vortex and oil film oscillation can be simulated, and the waterfall diagram can clearly identify the characteristic signals of oil film vortex and oil film oscillation vibration. One of the key concepts in rotor dynamics is to predict the behavior of the rotor by identifying key and high points. TS uses a proximity electric and eddy current probe installed in the 90 "direction and a key speed phase to analyze the axis trajectory based on the phase relationship between these two points.

2: Function

Use a touch screen control panel for easy operation and status display.

The rotor shaft is designed specifically for fluid film bearing rotor dynamics simulation.

Select different bearing clearances and controllable lubricating oil pressures for rotor dynamics research.

Install proximity eddy current displacement sensor probes in each bearing box.

Install the simulation test bench on a platform with a thick foundation and sufficient rigidity for adjustable height.

Separate the bracket bearing seat for easy replacement of the sliding bearing seat.

Provide various sliding bearing seats to study oil film phenomena.

A comprehensive oil circulation system: equipped with fuel tanks, heaters, pumps, and coolers, allowing for temperature and pressure control.

By installing the jack screws, it is easy to align the shaft.

By installing a dial gauge, it is easy to return to normal operating conditions after misalignment testing.

Test bench feature 3:

A turbine simulation test bench with a two-stage rotor structure that can simulate low pressure (LP) and medium low pressure (IP).

·Two shaft sizes: 40mm diameter, 1260mm length and diameter, 50mm, 1400mm length modulated straight steel shaft.

·Touch screen operation panel: Run/stop commands and display the pressure, temperature, and speed status values inside each sliding bearing on the test bench.

3.7KW variable frequency drive, built-in multifunctional front panel programmable controller,

Motor: 3-phase 3.7KW, equipped with a power plug for easy installation and disassembly.

·Speed display, outputting 1 pulse per rotation to simulate TTL signal.

4 bearing seats and sliding bearing seats, 2 holes for proximity eddy current displacement sensors, and 1 hole for temperature sensors.

·90 ° installation of eddy current sensors (8 proximity eddy current sensors, 1 key direction sensor).

·Fluid oil film sliding bearing seat with variable bearing clearance, length, and type (0.1, 0.2, 0.5mm clearance, elliptical, concave). Durable test bench: dimensions LxDxH=3200x1000x1300mm (including simulated test bench height)

·Oil circulation device: oil tank (with built-in heater), pressure regulating oil pump, cooler, distributor, pressure gauge, temperature sensor.

A simulation test bench with a rotor disk diameter of 460-200mm and 16 turbine blades.

·Install 18 or 36 M8 holes on each rotor disc for balancing and/or unbalance testing.

·Centered the mechanism and installed calibrated reference dial gauges and jack bolts.

·Installed four preloading devices (on each bearing seat)

Friction device: Install the friction frame and test the vertical, horizontal, axial, and oil seal friction faults of the rotor,

·Equipped with a jack bolt bracket for easy replacement of sliding bearing seats

·Anti impact transparent safety cover with safety interlock device.