Process, sensor and diagnosis device for pump diagnosis
First Claim
1. Process for detecting the operating state of a pump in a pump system, comprising the steps of:
- detecting at least one of a pressure and a flow profile P(t) in the pump system,computing at least one characteristic value Kkal of the at least one of the pressure and flow profile P(t),determining the operating state of the pump by comparing the at least one computed characteristic value Kkal with at least one of a predefined characteristic value Kvor and a characteristic value range bordered by the characteristic value Kvor, andoutputting the operating state of the pump determined by the comparison,wherein the at least one computed characteristic value Kkal characterizes a pulsation of at least one of the pressure and flow profile P(t) in a computation time interval Δ
tB, a pulsation quotient being computed as the at least one computed characteristic value Kkal.
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Accused Products
Abstract
A process for detecting the operating state of a pump of a pump system, involves the steps of: detecting at least one pressure and/or flow profile P(t) in the pump system, computing of at least one characteristic value Kkal from the pressure and/or flow profile P(t), comparing the computed characteristic value Kkal with at least one defined characteristic value Kvor or with a range bordered by the characteristic value Kvor, the defined characteristic value Kvor or the characteristic value range corresponding to the operating state of the pump of interest, and outputting the operating state determined by the comparison. With the process, the operating states of pumps, pump systems and hydraulic systems is determined by the computed characteristic value Kkal characterizing the pulsation of the pressure and/or flow profile P(t) in a computation time interval ΔtB, the pulsation quotient being computed as the computed characteristic value Kkal.
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Citations
12 Claims
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1. Process for detecting the operating state of a pump in a pump system, comprising the steps of:
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detecting at least one of a pressure and a flow profile P(t) in the pump system, computing at least one characteristic value Kkal of the at least one of the pressure and flow profile P(t), determining the operating state of the pump by comparing the at least one computed characteristic value Kkal with at least one of a predefined characteristic value Kvor and a characteristic value range bordered by the characteristic value Kvor, and outputting the operating state of the pump determined by the comparison, wherein the at least one computed characteristic value Kkal characterizes a pulsation of at least one of the pressure and flow profile P(t) in a computation time interval Δ
tB, a pulsation quotient being computed as the at least one computed characteristic value Kkal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Process for detecting the operating state of a pump in a pump system, comprising the steps of:
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detecting at least one of a pressure and a flow profile P(t) in the pump system, computing at least one characteristic value Kkal of the at least one of the pressure and flow profile P(t), determining the operating state of the pump by comparing the at least one computed characteristic value Kkal with at least one of a predefined characteristic value Kvor and a characteristic value range bordered by the characteristic value Kvor and outputting the operating state of the pump determined by the comparison, wherein the at least one computed characteristic value Kkal characterizes a time change of at least one of the pressure and the flow profile P(t), the characteristic value Kvor defining a maximum/minimum time change of the at least one of the pressure and the flow profile P(t). - View Dependent Claims (10, 11)
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12. Process for detecting the operating state of a device with at least one hydraulic actuator, comprising the steps of:
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detecting a pressure profile P(t) in one of the at least one hydraulic actuator and a feed line to the at least one hydraulic actuator, comparing the detected pressure profile P(t) with a predefined pressure profile Pvor(t) and comparing at least one computed characteristic value Kkal which characterizes the detected pressure profile P(t) to at least one corresponding characteristic value Kvor which characterizes the predefined pressure profile Pvor(t), outputting an operating state of the device determined by the comparison, and wherein the characteristic values Kkal and Kvor computed from the detected and the predefined pressure profiles are based on a vibration analysis.
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Specification