DD241126A1 - ARRANGEMENT FOR DIAGNOSIS OF SLIDING BEARINGS - Google Patents

Abstract

The invention "arrangement for the diagnosis of plain bearing damage" has the goal to increase the informativeness of temperature measurements for a technical diagnosis in plain bearings. By means of a special arrangement of temperature errors and a special evaluation technique, it is possible in particular to make statements about the point of damage in case of sliding bearing damage. The invention can be used in all plain bearings in power plants, in marine technology, in transportation, in agricultural technology and in the chemical industry.

Description

Area 1: T ₄ <T ₁ and T ₁ > T ₂

Rprsinh "> T, <r T, iinr) T,

tsereicn ι: 1 ₄ <ι! una ι τ> I ₂

Area 2: T ₄ <T ₁ and T ₁ <T ₂ and T ₁ > T ₃ Area 3: T ₄ <T ₁ and T ₁ <T ₂ and T ₁ <T ₃ and T ₂ > T ₃ Area 4: T ₄ <T ₁ and T ₁ <T ₂ and T ₁ <T ₃ and T ₂ <T ₃ Range 5: T ₄ > T ₁ and T ₄ > T ₅

Range 6: T ₄ > T ₁ and T ₄ <T ₅ and T ₄ > T ₆ Range 7: T ₄ > T, and T ₄ <T ₅ and T ₄ <T ₆ and T ₅ > T _f Range 8: T ₄ > T ₁ and T ₄ <T ₅ and T ₄ <T ₆ and T ₅ <'

Furthermore, the η temperature values in an analog or. Digital calculator that calculates the temperature distribution on the white metal surface.

Claims (3)

Invention claim: 1. Arrangement for the diagnosis of plain bearing damage using the thermoelectric voltage method or other Temperaturmeßeinrichtungen, characterized in that at several suitable locations of the bearing shell temperature sensors are mounted either directly or indirectly and they are connected to the inputs of a temperature signal unit whose output at the input of a comparator unit and a Calculator is applied and the output of the comparator unit with the input of a display unit and the output of the computer with an input of a display display and an input of an output unit are connected and that the comparator unit is designed so that determined from the η Temperaturmeßwerten the location of the maximum temperature on the bearing shell and that the computer is constructed such that it determines the temperature distribution on the surface of the bearing shell. 2. Arrangement according to claim!, Characterized in that temperature sensors are arranged in pairs at the narrowest lubrication gap at the lowest point of the bearing shell and between the narrowest lubrication gap and half shell edge. For this 3 pages drawings Field of application of the invention The invention relates to an arrangement for the diagnosis of plain bearing damage, in particular of plain bearings with a white metal layer, as z. B. in power plants, in marine engineering, in transportation, in agricultural technology and in the chemical industry occur. Characteristic of the known technical solutions Arrangements for the diagnosis of plain bearing damage are known which monitor the temperature, in particular white metal temperature, of the bearing shells in punctiform (PS 204730DD, PS 98144DD) or limited to small surface sections (PS 204034DD, PS 208494DD). In both cases, a high installation cost and a partial change in the white metal structure caused, also the type of damage is not adequately diagnosed. Object of the invention The aim of the invention is to monitor the temperature, in particular the white metal layer, of a sliding bearing with little technical effort, to diagnose damage and to allow statements about the location of damage. Explanation of the essence of the invention The invention has as its object to monitor the temperature of the bearing shells, in particular the white metal of a sliding bearing as is necessary for a technical diagnosis, so that a damage localization is possible, and the accuracy against punctual or tape-shaped measuring temperature introduced into the white metal layer to improve as well as to receive statements about the damage history. According to the invention, the object is achieved by distributing temperature sensors in the form of 2η thermoelectric suitable measuring wires, for example, into or onto the white metal surface of the bearing to be monitored. be attached to the white metal or to the bearing shell with screw connections and remove the thermal voltage directly from the bearing shell and the white metal. The η temperature signals are processed in a temperature signal preprocessing unit and are present at the inputs of a comparator unit and a computer. The comparator unit determines the location of the maximum temperature indicated by a display unit using the η conditioned thermovoltage values. Furthermore, the conditioned thermoelectric voltage is fed to a computer, which determines the temperature distribution on the bearing surface from the η temperature values. embodiment The invention sofl be explained below using an exemplary embodiment. The accompanying drawings are: Fig. 1: Thermo-voltage acceptance capabilities of a bearing shell;
Fig. 2: surface of a rolled-up bearing shell or bearing shell part;
Fig.3: Arrangement for the diagnosis of plain bearing damage. Advantageously distributed over the faces of the bearing shell thermospannungsmäßig suitable measuring wires for direct decrease of the thermal voltage between white metal and bearing shell attached. One possibility is indicated in FIG. FIG. 2 shows favorable connection locations. The points Ti to T ₆ denote the connection points of the terminals for the Thermospannungungsmeßverfahren. T ₂ and T ₅ are at the narrowest lubrication gap and T ₁ and T ₄ at the lowest point of the bearing shell. In the case of bearing damage, the following inequality system can be used to determine the location of the damage in the comparator: