RU3840U1 - DEVICE FOR CONTROL OF WEAR OF FRICTION VAPORS - Google Patents

Abstract

A device for controlling wear of friction pairs, comprising a cup of non-magnetic material with an inductive coil covering it and a recording device, characterized in that the inductive coil is made in the form of an oscillating circuit tuned to resonance and connected to a recording device.

Description

DEVICE FOR CONTROL OF WEAR OF FRICTION VAPORS

The utility model relates to the field of mechanical engineering and can be used to diagnose gas pumping units, internal combustion engines, compressors, gearboxes, hydraulic systems, as well as individual parts and assemblies of this and other equipment.

Known electroinductive probe for active control of wear of machine parts, which is made in the form of a cylindrical stud, consisting of two coaxially arranged parts, a non-magnetic gap between which is formed at the end of the stud. The reduction, due to wear of the part into which the stud is pressed, the area of the nonmagnetic gap leads to a change in the signal obtained by the coils included in the signal indicator circuit, which is used to judge the wear of the part in the friction pair / 1 /. A disadvantage of the known device is the low degree of accuracy due to the fact that wear particles falling into the non-magnetic gap lead to a change in the signal detecting wear.

Closest to the utility model in terms of technical nature and the achieved effect is a device for controlling wear of friction pairs, including a glass of non-magnetic material with an inductive coil covering it and a recording device / 2 /.

A disadvantage of the known device is the low sensitivity, which is explained by the use of only an inductor. In addition, a permanent magnet located inside the sensor housing allows you to control only Fe wear particles.

MKM G01 N 3/56

Creation and accuracy of wear control of parts of various mechanisms made of both ferromagnetic materials and non-ferrous materials, alloys and some polymers.

This object is achieved in that the device for controlling wear of friction pairs, comprising a cup of non-magnetic material with an inductive coil covering it and a recording device, according to the application for a utility model in order to increase the sensitivity, accuracy and the possibility of determining wear particles, both Fe and non-ferrous metals, alloys and some polymers, the inductor is made in the form of an oscillatory circuit tuned to resonance.

Figure 1 shows a General view of the device, and figure 2 is an electrical diagram of the connections.

A device for controlling wear of friction pairs contains a cup 1 (Fig. 1) made of a non-magnetic material, with an inductive coil 2 covering it, made in the form of an oscillating circuit L C tuned to resonance (Fig. 2) and connected to a recording device 3.

The device operates as follows. During operation of the diagnosed mechanism, for example, plain bearings, wear products enter the lubricating oil. Their number depends on the wear rate of the plain bearings. When the device is installed on the oil drain pipe from the bearing, the non-ferrous alloy wear particles (for example, babbitt) fall into the cup 1, causing a mismatch of the oscillating circuit L С tuned to resonance with the inductive coil 2.

The specific embodiment example shown in Figs. 1 and 2 had the following electrical parameters optimized for tribodiagnostics of sliding bearings of a compressor installation of type 2GM4-1,3 / 12-250 PO AGNKS-5 Wrestler Mosavtogaz in Moscow (see the act on acceptance of a prototype particle wear analyzer in the lubrication system of the compressor CNG compressor):

- the device uses an oscillatory circuit with a resonant frequency of f 20 MHz.

coil inductance L 3 μH

B7-35.

The device’s operating time on the Borets software was T 48 hours. The mass of wear products of babbitt compressor liners according to the testimony of a recording device was 6.4 mg. Control weighing on an analytical balance with an accuracy of +0.002 mg. showed that the error of the claimed utility model did not exceed

The proposed utility model allows, in comparison with the existing one, to increase the sensitivity and accuracy of monitoring the wear of friction pairs made of both ferromagnetic materials and non-ferrous metals and alloys and can be used both for tribodiagnostics of compressors (see act) and for diagnostics of gas pumping units , internal combustion engines, turbines, gearboxes, hydraulic systems, as well as individual parts and assemblies of this and other equipment. This will allow timely information on the occurrence of wear failures and prevent emergency situations; maximize the use of the work resource embedded in the machine, extend the overhaul time and control the quality of the repair, which ultimately leads to a reduction in the time and labor costs, as well as a reduction in the consumption of spare parts; scientifically substantiate the timing of oil changes in the lubrication system of machines, select the optimal lubricant for specific friction pairs; improve the quality and culture of service.

Sources of information:

1. The author's certificate of the USSR N655342 G 01 N 3/56, 1979.

2. The author's certificate of the USSR N1104387 G 01 N 3/56, 1984. Author: U

- s B.R. Matveevsky

Claims (1)

A device for controlling wear of friction pairs, including a cup of non-magnetic material with an inductive coil covering it and a recording device, characterized in that the inductive coil is made in the form of an oscillating circuit tuned to resonance and connected to a recording device.