JPS63263210A - Detecting device for abrasion of cylinder liner and piston ring - Google Patents

Abstract

PURPOSE:To exactly detect engine abrasion by picking oil on an inner surface of a cylinder liner through an automatic sampling valve device opened closed synchronously with engine rotation to store it in an oil reserving vessel for its stirring there, and quantitatively measuring abrasion powder. CONSTITUTION:An automatic sampling valve device 30 opened and closed synchronously with engine rotation opens a valve to pick oil on an inner surface of a cylinder liner 1 through a conduit 9, and feeds the oil into an oil reservoir 11 through an oil feed pipe 17, a vapor-liquid separator 18, and an oil feed pipe 20 with a heater 21. Oil solvent in an oil solvent tank 22 is fed to the oil feed pipe 17 through a pipe 23 and an electromagnetic valve 24, and into the oil reservoir 11 through a pipe 25 and an electromagnetic valve 26. The oil in the oil reservoir 11 is stirred by an oil stirring device 13, and fed through an intake pipe 14 with the heater 21 and a pump 15 to an abrasion detecting device 40, where abrasion powder in the oil is quantitatively measured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wear detection device applied to piston rings and cylinder liners of diesel engines.

[Conventional technology]

In diesel engines, especially large marine diesel engines, as a means of achieving long-term piston opening,
Detection of wear during operation of piston rings (hereinafter referred to as ring rings) and cylinder liners (hereinafter referred to as liners) has become an important issue.

FIGS. 8 and 9 show the configuration of a conventionally used apparatus for collecting oil and detecting ring and liner wear.

In the figure, 1 is liner, 2 is piston, 3 is ring, 4
5 is a scavenging port of the liner, 5 is an oil receiver attached to the lower end of the liner 1, 6 is an oil conduit connecting the oil receiver 5 and an oil collection container 7, and 7 is an oil collection container.

Further, 8 is a hole for oil collection, and 9 is an oil conduit connecting the hole 8 and the collection container 7.

The abrasion powder generated on the sliding surface between the ring 3 and the liner 1 enters the lubricating oil, and this oil is collected by the oil receiver 5 provided at the lower end of the liner 1 as shown in FIG. Alternatively, the oil is collected from the oil hole 8 provided slightly above the scavenging port 4 of the liner 1 and stored in the oil collection container 7.

The oil collected in the above manner was analyzed by spectroscopic analysis, etc.
Acidity and binary values are measured to determine the amount of wear on the iron and the cause of the wear. At present, by repeating such measurements, changes in wear over time are monitored. This method has been widely used as a method for evaluating wear without removing the piston 2.

[Problem that the invention seeks to solve]

However, such conventional methods have the following problems.

(1) Oil is collected from locations with relatively good lubrication, such as the lower end of the liner 1 and the vicinity of the scavenging port 4.
Information on the most worn parts of the liner (amount of wear and acidity,
It is difficult to obtain pi (value, etc.), and the variation in wear is also large.

(2) Since oil is sampled every time, it is necessary to obtain it by manual analysis such as spectroscopic analysis, which is labor-intensive and labor-intensive.

The present invention is intended to solve the above problems, and has the following two objectives.

(1) Accurately understand liner and ring wear and reduce variations in wear detection.

(2) By automatically collecting oil from the liner and detecting the amount of wear, it saves manpower and effort.

[Operation of Means 9 to Solve the Problem] In order to solve the above-mentioned problems, the present invention is characterized by the following structure.

(1) In order to accurately understand liner and ring wear, oil is collected from above the liner, where liner and ring wear tends to be relatively high, thereby reducing variations in wear.

(2) Collection of oil adhering to the liner surface, detection of the amount of wear debris, detection of the amount of wear debris and acidity, -value, system
In addition to having a function that allows automatic cleaning of the brake line etc. online, it is also equipped with a system that can simultaneously detect acidity and binary values to understand the amount of wear debris and its cause.

(3) In (1) above, some of the collected oil is used to detect acidity and -, and the remaining oil is used to detect the amount of wear debris.
Simultaneous recording was performed so that measurements could be performed separately, improving the accuracy of each measurement.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a configuration diagram of the glue/liner wear detection device of the present invention, and FIG. 2 is a schematic sectional view of an automatic oil sampling device.
Figure 3 shows the basic configuration of ferrography for wear detection.
FIG. 4 similarly shows a basic configuration diagram of the wear detection X-ray device.

In Fig. 1, 1 is a liner, 2 is a piston, 3 is a ring, 8 is a hole for oil sampling, 9 is an oil conduit, 11 is an oil sump, 30 is an automatic sampling valve device, 17 is an oil feed pipe. , 18 is an oil and gas separator, 19 is a gas relief hole, 20
1 is an oil feeder connecting the separator 18 and the oil sump 1.
2 is a relief pipe, 13 is an oil stirring device, 14 is a suction/throttle, 15 is a metered oil feed pump, 16 is an oil feed/throat, 4
0 is a wear detection device, 48 is a relief pipe, 47 is a lead wire, 49 is an automatic recorder, 21 is a heater, 22 is an oil solvent tank, 23 is a pipe, 24 is a solenoid valve, 25 is a solvent supply nozzle, 26 is a solvent supply solenoid valve, 28 is a discharge pipe, 2
7 is a discharge solenoid valve.

Further, in FIG. 2, 30 is an automatic sampling valve device;
36 is a valve body, 31 is a needle valve, 35 is an electromagnetic coil,
32 is Stotsuno? -, 33 are lead wires, and 34 is a synchronous opening/closing control circuit.

FIG. 3 shows a conceptual diagram of the configuration of ferrography as a wear detection device 40, in which 41 is the ferrography body, 44 is a magnet, 42 is a light source, 43, 45 is an optical fiber, 46 is a photodetector, and 48 is a It is a relief pipe.

FIG. 4 shows an X LQ device as the wear detection device 40, in which 51 is a sample cell, 52 is an X-ray generator, and 5
3 indicates an X-ray counter, and 54 indicates an X-ray. The sample cell 51 is installed between the oil feed pipe 16 and the relief pipe 48 in FIG.

The oil sampling hole 8 is bored in the upper part of the liner 1 where the liner 1 and ring 3 are relatively prone to wear. This is because when oil is collected from below the liner 1, the wear particles above the liner 1 are dispersed in the circumferential direction below the liner 1 as the piston 2 descends, which tends to cause variations in the amount of wear measured. This is to prevent this.

The oil stirring device 13 is provided with a stirring propeller 13a to stir the oil accumulated in the oil reservoir 11.

In the wear detection system with the above configuration, oil containing wear particles passes through the oil collection sump hole 8 above the liner 1 and the oil conduit 9 and enters the automatic sampling valve device 30. In this device 30, as shown in FIG. 2, an electromagnetic coil 35, a valve 31, and a valve are connected by a control circuit 34 and a lead wire 33, which outputs valve opening/closing signals in synchronization with the crank angle of the engine. The valve 31 opens when the piston 2 rises, and oil is sent to the oil pipe 17. Since the collected oil contains compressed air and gas, these are separated by the oil and gas separator 18, and the gas is discharged to the outside through the gas relief hole 1'9.

The oil supply/mother eve 17 is connected to the solvent tank 22 via the pipe 23.
The solvent is mixed into the oil at an appropriate timing, and the diluted oil flows through the oil pipe 20 and into the oil sump 11.
sent to.

In the oil sump 11, an oil solvent tank 22 and a separately provided pipe 25 are supplied with a solenoid valve 26 at an appropriate timing.
Sent by opening and closing. In the oil reservoir 11, a mixture of oil and solvent (including sludge) is stirred by a stirring device 13 having a propeller 13a. oil.

Is the mixture of sludge and abrasion powder etc. inhaled? A fixed amount of oil is sent to the wear detection device 40 via the oil feed pipe 16 and the fixed amount oil feed cylinder 15 .

Note that the oil pipe 20. An electric heater 21 is wrapped around each of the oil sump 11, the suction pipe 14, and the oil supply pipe 16, and increases the temperature of the oil to a certain extent to improve its fluidity and reduce sludge. This improves the separation between wear particles and wear particles.

The wear detection device 40 includes a commercially available ferrography device as shown in FIG. 3, or a transmission type X-ray device (this may be an excitation type X-ray device) as shown in FIG.

The ferrography shown in FIG.
This method utilizes the principle that when oil containing wear particles passes through the magnetic field of a magnet 44 installed at 1, the wear particles are arranged in order of size. 4
3, and the transmitted light is sent to a photodetector 46 through an optical fiber 45, and is displayed and recorded as an abrasion risk index determined by the size and amount of abrasion powder.

The X-ray apparatus shown in FIG. 4 emits X-rays 54 from an X-ray generator 52 while passing oil containing wear particles through a sample cell 51 partially constructed with a transparent wall. It is used to quantitatively detect the amount of elements that are wear particles.

The data obtained from the wear detection device 40 as described above is sent to the automatic recorder 49 via the lead wire 47 and recorded therein. After the wear has been detected, the oil flows through the relief pipe 48.
It is discharged to the outside.

As described above, the amount of wear of the oil sampled from above the liner 1 is automatically measured and recorded. When repeating this process, if wear debris remains in the oil collected last time, it will affect the next time's data and reduce measurement accuracy. To prevent this, the various parts such as the grooves 20, 14, 16, oil retainer 11, etc. are installed in the oil solvent tank 22 so that they can be automatically cleaned.・Guib 23, 25. It is equipped with electromagnetic valves 24, 26, 27, etc. that are electrically controlled.

FIG. 5 shows a second embodiment of the invention.

In the figure, reference numeral 61 indicates an electrode 64 inserted into the oil reservoir 11, a recorder, 62 a lead wire connecting the electrode 61 and the recorder 64, and 63 a lead connecting the recorder 64 and the wear detection device 40. It is a line.

In this embodiment, an electrode 61 for measuring the acidity or pH value of oil is provided in the oil reservoir 11, and a lead wire 62 is provided.
After that, the acidity and pH values are recorded by a recorder 64.

That is, in this embodiment, the acidity or PII value and the amount of wear of the oil sampled from above the liner 1 are automatically recorded. The rest of the structure is the same as that of the first embodiment, and the same members are designated by the same reference numerals.

FIG. 6 shows a third embodiment of the invention.

In the figure, 70 is a suction pipe, 71 is a pump, and 72.7
4.78 is a solenoid valve, 73 is an oil reservoir for oil separation, 75 is an electrode provided in the oil reservoir 73, 76 is a lead wire, and 79 is an automatic recorder. In this embodiment, some of the oil remaining in separator 18 is used to detect acidity or pH, and the remaining oil is used to measure wear. sent to the system. First, the former is sent to an oil sump 73 for oil separation by a suction pipe 70 and a bonder 71. The oil reservoir 73 is provided with an electrode 75 for measuring the acidity or binary value of the oil, and the electrically measured μ value is sent to the acidity or single value recorder 7 via a lead wire 76.
Recorded at 7.

On the other hand, the latter is sent to the oil sump 11 by the solenoid valve 78 and the oil pipe 7620. Solvent is sent to the nuclear oil reservoir 11 from an oil solvent tank 22 via a solenoid valve 26, and a mixture of oil and solvent (this also includes ° sludge) is sent to a stirring device 13 with a propeller. It will be stirred.

A mixture of oil, sludge, wear powder, etc. is passed through the suction/flat tube 21 and the constant oil feed pump 15, and a fixed amount is sent to the wear detection device 40 via the oil feed tube 16.

The measurement results obtained by the wear detection device 40 described above are sent to an automatic recorder 79 via a lead wire 47. The recorder 7
9, the value measured by the recorder 77 is also recorded at the same time.

That is, the automatic recorder 79 records the acidity or pH value;
An index value indicating the amount of wear is recorded at the same time. 7th
The figure shows -■ values, wear index values, abnormal wear zones ■, ■, and normal wear zones. In the figure, I
In the zone where the pH value is low and there is a lot of wear (l/1), it is clear that so-called corrosive wear is the cause, and it is necessary to reduce the increase in alkalinity and the production of sulfuric acid.

In zone (2), the - value is high and there is a lot of wear, and it can be seen that so-called mechanical wear is the cause, and that it is necessary to increase the amount of lubrication. In short, in the above embodiment, the magnitude of the amount of wear and its cause can be determined simultaneously or independently from the automatically recorded values.

In the third embodiment, the structure of the pond is the same as that in the first embodiment, and the same members are designated by the same reference numerals.

〔Effect of the invention〕

As described above, according to the present invention, there is provided a device that automatically collects oil from areas where a relatively large amount of wear occurs on liners and rings, and also automatically measures wear particles in the oil. Moreover, since it also serves as a device that can automatically clean the device during repeated measurements, it is possible to measure the state of wear of rings and liners more accurately than conventional devices.

Therefore, there is an advantage that the wear condition can be measured without requiring much manpower and effort.

[Brief explanation of drawings]

Fig. 1 is an explanatory block diagram of a ring and liner wear detection device according to the present invention, Fig. 2 is a schematic sectional view of an automatic oil sampling device, Fig. 3 is a basic block diagram of wear detection, and Fig. 4 is a schematic cross-sectional view of an automatic oil sampling device. FIG. 2 is a basic configuration diagram of a wear detection X-ray device. 5 and 6 are views corresponding to FIG. 1 showing another embodiment of the present invention, and FIG. 7 is an explanatory view of the wear effect. FIGS. 8 and 9 show the configuration of a conventional oil sampling device for detecting ring and shear wear. 1... Cylinder liner, 3... Piston ring, 8
...Sampling hole, 11...Oil sump, 13...Oil stirring device, 30...Automatic sampling valve device, 40...
・Abrasion detection device, 61...electrode, 49.64,79・
...Recorder. 40 i'+"J[', tj"'11 Apparatus Figure 3 Figure 4 Figure 7 ゛ Figure 8 Figure 9

Claims (4)

[Claims] (1) An automatic sampling valve device that has an electric excitation circuit that opens and closes in synchronization with the rotation of the engine, into which oil sampled from the inner surface of the cylinder liner is introduced, and an automatic sampling valve device that stores oil sent from the first half sampling valve device. It is characterized by comprising an oil sump container, a means for stirring the oil in the oil sump container, and a wear detection device that quantitatively measures wear powder in the oil sent from the oil sump container. Cylinder liner and piston ring wear detection device. (2) An automatic sampling valve device that has an electric excitation circuit that opens and closes in synchronization with the rotation of the engine and into which oil sampled from the inner surface of the cylinder liner is introduced, and a reservoir for storing the oil supplied from the sampling valve device. an oil sump container, a means for stirring the oil in the oil sump container, and an abrasion detection device that quantitatively measures wear powder in the oil sent from the oil sump container;
A wear detection device for cylinder liners and piston rings, comprising an electrode that measures the acidity and pH value of oil, and a recording device that records the acidity and pH value measured by the electrode. (3) An automatic sampling valve device that has an electric excitation circuit that opens and closes in synchronization with the rotation of the engine and into which oil sampled from the inner surface of the cylinder liner is introduced, and an oil that stores the oil supplied from the sampling valve. a reservoir, a means for agitating the oil in the oil reservoir, a wear detection device for quantitatively measuring wear powder in the oil sent from the oil reservoir, and a wear detection device for quantitatively measuring wear powder in the oil sent from the oil reservoir; A wear detection device for cylinder liners and pistons, comprising: a container in which a part is branched, and a means for detecting the acidity and pH value of oil in the container. (4) An automatic sampling valve device that has an electric excitation circuit that opens and closes in synchronization with the rotation of the engine, into which oil sampled from the inner surface of the cylinder liner is introduced, and an automatic sampling valve device that stores oil sent from the first half sampling valve device. an oil sump container, a means for stirring the oil in the oil sump container, a wear detection device for quantitatively measuring wear powder in the oil sent from the oil sump container, the automatic sampling valve device, and an oil sump container; A wear detection device for cylinder liners and piston rings, comprising an automatic cleaning device for cleaning oil passing members such as reservoir containers.