State monitoring protection device

Abstract

The invention relates to a state monitoring protection device, which belongs to the field of measurement. The state monitoring protection device comprises a sensor. The invention is characterized in that: the sate monitoring protection device is a three-wire loop dual-channel transducer which transforms a bushing vibration signal acquired by a sensor system into a corresponding signal of between 4 and 20mA; the signal can be directly output to a fault diagnosis system, a DCS system, a paperless recorder and / or an equipment monitoring instrument; the state monitoring protection device carries out data communication with an upper computer by a data interface; and the user can carry out configuration programming on the state monitoring protection device by the upper computer, and also can externally arrange a relay module by a chassis to flexibly select a logical approach protected by the relay. The state monitoring protection device can transform the signal acquired by the sensor system into a standard instrument signal, has the function of intelligent data analysis / processing, has remote communication function, and can be widely used in the measurement / monitoring field of various bushing vibration (speed / intensity) monitoring systems.

Description

technical field [0001] The invention belongs to the field of measurement, and in particular relates to a state monitoring and protection device for a large operating unit. Background technique [0002] The equipment system of modern industrial mass production has the characteristics of continuous, high-speed, complex, large-scale, and high degree of automation. Therefore, when an unforeseen failure occurs, it will cause huge downtime losses. If predictive maintenance is achieved, the equipment system can be operated efficiently, safely, reliably and at low cost. [0003] Equipment failures can usually be divided into two types: lifetime failures and sporadic failures. [0004] Uniform wear occurs when the equipment is operated under the allowable working conditions. When the wear exceeds the specified value, a life-time failure will occur. The time of this failure can usually be predicted, and its ability can be restored through regular replacement, repair, and transformati...

AI Technical Summary

Problems solved by technology

[0014] So far, foreign / domestic manufacturers have researched / produced different types of measuring equipment in the measurement of speed and acceleration vibration systems in the large-scale rotating machinery and equipment industries such as electric power (thermal / hydraulic power plants), petrochemical, and metallurgy, but most of these equipment The tile vibration signal output by the collected sensor is simply amplified / remotely transmitted to the central monitoring device located in the control room, and then the central monitoring device performs signal regulation / conversion and provides it to the calculation / control module or unit for corresponding calculation, control, monitoring or data recording. Since the measurement data is a non-standard quantity signal during the transmission process, the transmitted analog measurement signal will have a large Distortion / deformation may even cause malfunction of the monitoring system in severe cases; at the same time, because the transmission is a non-standard signal, it brings difficulties to the interface matching of subsequent instruments and devices, and increases the intermediate signal specification matching link, which weakens the original The strength / accuracy of the measurement signal increases the intermediate link equipment and failure points, resulting in an increase in one-time investment costs, and also affects the safety, stability, and long-term operation of large-scale units

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