A METHOD FOR PROVIDING MAINTENANCE DATA

• US 20150363750A1
• Filed: 01/22/2014
• Published: 12/17/2015
• Est. Priority Date: 02/01/2013
• Status: Abandoned Application

• Current Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Original Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Inventors: SVENSSON, Rickard, LFBERG, Anders
• Application Number:
  US14/765,237
• Publication Number:
  US 20150363750A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01M 99/008 by doing functionality tests
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
• CPC Class Codes: G05B 23/0243 model based detection method, e.g. first-principles knowledge model
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: G06Q 10/20 Administration of product repair or maintenance

Abstract

A method for providing data related to the operating condition of a machine part of a liquid processing system is provided. The method comprises the steps of: selecting at least one machine part of the liquid processing system; calculating an expected remaining usable time based on an estimated life time of the machine part; determining at least one real-time operating condition of the at least one machine part; and providing the expected time for maintenance and the at least one operating condition as data for enabling a decision whether to perform maintenance of the machine part or not.

Claims

1. A method for providing data related to the operating condition of a machine part of a liquid processing system, comprising the steps of:

selecting at least one machine part of said liquid processing system;

calculating an expected remaining usable time based on a predictive life time of said machine part;

determining at least one real-time operating condition of said at least one machine part; and

providing said expected remaining usable time and said at least one operating condition as data for enabling a decision whether to perform maintenance of said machine part or not.

2. The method according to claim 1, wherein the step of providing said expected remaining usable time and said at least one condition further comprises presenting it to a system operator.

3. The method according to claim 1 or 2, wherein the calculated expected remaining usable time is a function of a desired risk of failure for said machine part.

4. The method according to claim 1, wherein said expected remaining usable time is a function of the actual operation time for said machine part.

5. The method according to claim 1, wherein said expected remaining usable time is a function of parameters representing the liquid product being processed during the actual operation time for said machine part.

6. The method according to claim 5, wherein said parameters representing the liquid product being processed are predefined.

7. The method according to claim 5, wherein said parameters representing the liquid product being processed are measured in real-time.

8. The method according to claim 1, wherein the step of providing said expected remaining usable time and said at least one operating condition comprises comparing said at least one operating condition with a predetermined threshold, and providing an indicator representing the relation between the at least one operating condition and the threshold.

9. The method according to claim 1, wherein said at least one real-time operating condition is a value representing a flow, a temperature, a pressure, a filling level, a rotational speed, electrical current or voltage, energy consumption, cycle time, vibration, sound, or oil level or pressure.

10. A method for administrating maintenance of a plurality of machine parts included in a liquid processing system, comprising the steps of:

performing the method according to claim 1 for each of said plurality of machine parts;

comparing the expected remaining usable time and/or said at least one operating condition for each machine parts;

determining intervals for the expected remaining usable times and/or said operating conditions; and

assigning each machine part to one of said intervals for enabling a decision whether to perform maintenance of said machine parts assigned to a specific interval or not.

11. A liquid processing system comprising a plurality of machine parts, and a controller connected to a computer-readable medium having embodied thereon a computer program for processing by a computer, the computer program comprising a code segment for performing the method according to claim 1.