Vibration monitoring system technical state of equipment and structures VDM-14 (VDM14, VDM 14)
In those cases where it is necessary to organize vibration control and rapid diagnosis of equipment defects, optimal use of multi-channel monitoring system marks «VDM-14."
Vibration monitoring system technical state of equipment and structures VDM-14 can be used for vibration monitoring and vibration protection of rotating equipment.The greatest effect is obtained when using «VDM-14" to control the vibration parameters of high-voltage equipment of various designs and constructions.
For this purpose, to enhance diagnostic capabilities in the VDM-14 provides for registration of six process parameters, three temperatures, humidity, voltage and current. Consideration of these parameters allows more specifically to build diagnostic models of likely defects, taking into account the technological parameters of the controlled equipment.
- Example 1.
One of the strengths of the instrument system is vibration monitoring of technical condition of equipment and structures VDM-14 is an analysis of the transformer equipment.With this monitoring system and embedded software «Vesta», solves two major problems for the operation of transformers:
- Determine the quality of pressing the active elements of the transformer, the windings and core.The current values of these parameters depends on the dynamic resistance of the transformer for cutting short circuit, resulting in damage to the windings, and, ultimately, to the output of the transformer failure. To carry out such a diagnosis on a three phase transformer, made in the general tank must be mounted at least 6 in ibrodatchikov;
- Monitoring the technical condition of motor bearings and oil pumps impeller mounted in the cooling system transformer.To carry out such monitoring and diagnosis of each case on the oil pump to install a vibration sensor.
With a single instrument system vibration monitoring the technical state of equipment and structures VDM-14 can control the pressing, and all windings of the transformer core, as well as the technical condition of the oil pumps to 8.
Organization of vibration control of bearings and the stator, or high-voltage electric motor.
Control the vibration condition of bearings of the generator is carried by six vibration sensors mounted on each pole in three axes. To control the axial displacement of the channel is used to probe the axial shift.
Based on analysis of CPS and the spectra of vibration signals provides vibration protection, and rapid diagnosis of mechanical defects of the machine.
Number of sensors monitoring the vibration mounted on a package of active steel stator electrical machine depends on the size of the stator. At sufficiently high-voltage motors, two sensors mounted vibration of turbogenerator stator on their number increases to three. The maximum number of vibration sensors mounted on the stator hydro.
Based on the analysis of signals from these sensors, with built-in expert system «MDR», controlled by the mobility section of the stator winding in the slot and overhang area. To do this, consider the technological regimes of electrical machines using the additional channels of measurement.
With the help of the instrument system is vibration monitoring of technical condition of equipment and structures VDM-14 can organize the operational control of technical condition of various structures, buildings and bridges.You must use a special low-frequency sensors to measure vibrations to monitor the vibration, whose frequency has a value in units and shares of Hertz. The sensors are mounted, for example, in the middle of the bridge spans, and measure the vibrations of structures in three axes. Similarly, low-frequency vibration sensors can be used to monitor the state supports, foundations.
Special diagnostic software instrument vibration monitoring system technical state of equipment and structures VDM-14, based on modal analysis which allow to analyze the shape of oscillation-controlled design.
Specifications of vibrating devices for monitoring the technical state of equipment and structures VDM-14:
The number of recording channels of vibration - 15 (14 vibration, a marker of phase);
Frequency range - 10Hz-1000Hz;
The number of channels the device temperature vibration monitoring system technical condition of equipment and structures VDM-14 - 3;
Channel measuring the ambient humidity - 1;
Number of channels measure current, voltage monitoring device VDM-14 technical condition of rotating equipment - 1 1;
Port for connection to a computer - RS-1485;
Operating temperature range instrument vibration monitoring system technical state of equipment and structures VDM-14 - from -40 º C to +60 º C;
Dimensions - no more 170h120h180mm;
Mass of device without sensors - no more than 14.0 kg;
The manufacturer guarantees the quality of the instrument system is vibration monitoring of technical condition of equipment and structures VDM-14 technical requirements specifications subject to user terms and conditions of storage, transportation, installation, operation, established specifications and operational documentation.
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Built-in printer and a keyboard, memory, transfer data to a computer
Wheatstone bridge, resistance box measure, the resistance coils:
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