Device For Monitoring A Pump

Abstract

A device and a method for monitoring rotating components in centrifugal pumps or systems which comprise centrifugal pumps is provided. The device includes a first unit which is located on or in the component to be monitored having at least one component property sensor, a sensor signal evaluation unit, a transmitting unit for transmitting analysis results to a receiver arranged spatially separate from the monitored component, and a source for supplying power. The device further includes a second unit having a receiver unit, a transmitted signal evaluation unit, and a sensed component property display and/or information communication element. The analysis result transmission from the first unit to the second unit is acoustic.

What is claimed is: 
     
         1 . A device for monitoring rotating components in centrifugal pumps or systems which comprise centrifugal pumps, comprising:
 a first unit which is arranged at least one of in or on a component to be monitored, the first unit comprising a source for supplying energy, at least one sensor, a sensor signal evaluation unit, and a transmitting unit for transmitting a signal from the microprocessor; and   a second unit spatially separate from the monitored component, the second unit comprising a receiver unit configured to receive the signal from the transmitting unit, a transmitted signal evaluation unit, and a communication unit for communicating information derived from the transmitted signal from the second unit,   wherein the signal is transmitted acoustically.   
     
     
         2 . The device as claimed in  claim 1 , wherein liquid and solid sound-conducting media are provided on a transmission link between the transmitting unit and the receiver unit. 
     
     
         3 . The device as claimed in  claim 1 , wherein the first unit sensor signal evaluation unit includes a setpoint value memory. 
     
     
         4 . The device as claimed in  claim 1 , wherein a frequency and phase position of the transmitted signal is different from system noise frequencies. 
     
     
         5 . The device as claimed in  claim 4 , wherein the second unit includes a soundwave sensor for sensing ambient noise. 
     
     
         6 . The device as claimed in  claim 1 , wherein the first unit is integrated into the monitored component. 
     
     
         7 . The device as claimed in  claim 6 , wherein the first unit is integrated by being cast into the monitored component. 
     
     
         8 . The device as claimed in  claim 1 , wherein the first unit source for supplying energy is an energy supply device. 
     
     
         9 . The device as claimed in  claim 1 , wherein the at least one sensor senses operating parameters of at least one of the centrifugal pump and the centrifugal pump system. 
     
     
         10 . The device as claimed in  claim 1 , wherein the at least one sensor senses component properties of at least one of the centrifugal pump and of the centrifugal pump system. 
     
     
         11 . The device as claimed in  claim 10 , wherein the at least one sensor is a fracture sensor. 
     
     
         12 . The device as claimed in  claim 1 , wherein the at least one sensor senses properties of the delivery medium. 
     
     
         13 . A method for monitoring rotating components having a device according to  claim 1 , comprising the acts of:
 interrogating the at least one sensor at cyclically recurring intervals;   comparing sensor data obtained in the interrogating act with setpoint values from a setpoint value memory of the sensor signal evaluation unit;   transmitting the signal to the receiving unit when a threshold value is exceeded;   evaluating the signal received by the receiving unit;   communicating the results of the signal evaluation to at least one of a displays and a superordinate system controller.   
     
     
         14 . The method claimed in  claim 12 , wherein
 in the evaluating step the evaluation of the signal takes into account an ambient noise of at least one of the centrifugal pump and the centrifugal pump system.   
     
     
         15 . An impeller wheel of a centrifugal pump, comprising:
 the first unit as claimed in  claim 1 .   
     
     
         16 . The impeller wheel as claimed in  claim 15 , wherein the impeller wheel is formed from a polymer material, in particular polymer concrete. 
     
     
         17 . The impeller wheel as claimed in  claim 16 , wherein the polymer material is a polymer concrete material.