JP2803972B2 - Oiling system for spot lubrication type tilting pad journal bearing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubrication system for a spot lubrication type tilting pad type journal bearing device .
System , even when the power supply of the refueling pump motor is lost,
An appropriate oil film is formed on the bearing sliding surface.

[0002]

2. Description of the Related Art Generally, in an oil film bearing for supporting a rotating body, it is sufficient that an appropriate oil film is established on the sliding surface between the rotating body and the bearing pad. As a result, the oil is agitated, resulting in an extra loss. For this reason, by using a spot lubrication type bearing that supplies lubricating oil only to the sliding surface as a minimum necessary part for establishing an oil film, bearing loss can be reduced.

Conventionally, such a spot lubricated bearing has been proposed in, for example, "Thermo-fluid lubrication performance of spot lubricated tilting pad journal bearing" (1988), Proceedings of the 33rd Annual Convention of the Japan Lubrication Society (Okayama). FIG. 3 is a side view showing the spot-lubricated tilting pad journal bearing, and FIG. 4 is a plan view. In the figure, reference numeral 1 denotes a rotating body provided in a rotary machine or the like, 2 denotes a segment type oil film bearing pad radially disposed around the rotating body 1, and 3 denotes sliding of the rotating body 1 and the segment type oil film bearing pad 2. An oil supply pipe installed to supply the lubricating oil 4 in the vicinity of the surface, 5 is an oil supply pump for supplying the lubricating oil 4 to the oil supply pipe 3, 6 is a motor for driving the oil supply pump 5, and 7 is An oil tank containing a segment type oil film bearing pad 2 and an oil supply pipe 3, 8 is an oil tank 7
-External piping for circulating the lubricating oil 4 between the oil supply pump 5 and the oil tank 7.

The conventional spot lubrication type tilting pad journal bearing device is configured as described above. When the power supply of the motor 6 for driving the lubrication pump 5 is established, the external piping 8 and the lubrication opening piping are provided. The lubricating oil 4 is circulated through 3 and can be supplied to the vicinity of the sliding surface between the rotating body 1 and the segment type oil film bearing pad 2.

[0005]

Since the conventional spot lubrication type tilting pad journal bearing device is constructed as described above, the lubrication of the rotating body 1 and the segment type oil film bearing pad 2 is performed by the lubrication oil pump 5. When the power supply of the motor 6 is lost, the oil supply pump 5 does not operate, so that the lubrication oil 4 cannot be circulated and supplied, and the segment type oil film bearing pad 2 cannot be lubricated. There has been a problem that the rotating body 1 cannot be supported by the oil film.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a simple structure in which one pump is shared even when the power supply to the oil pump motor is lost.
And to provide a fuel supply system of the tilting pad journal bearing of spot-type oil feeder which is capable of allowing the lubrication of segmented oil film bearing pads in concrete.

[0007]

According to a first aspect of the present invention, there is provided a lubrication system in a spot lubrication type bearing device .
Whether to drive the oil pump motor constantly or in an emergency
Regardless, the motor of the oil supply pump is always driven by the rotational force of the rotating body.

According to a second aspect of the present invention, there is provided a lubricating system for a spot lubricating type bearing device , in which a generator is driven by the rotating force of a rotating body to generate electric power, and the electric power is supplied to an oil pump motor. It is.

[0009]

According to the first aspect of the present invention, there is provided a lubricating system for a spot lubricating type bearing device , wherein the lubricating system includes a lubricating system which is driven only by the rotating force of a rotating body.
Since the motors of the oil pumps are driven, lubricating oil can be supplied to the segment-type oil film bearing pads as long as the rotating body is rotating regardless of the loss of power to the oil pump motors. Can be lubricated.

In the lubricating system for the spot lubricating type bearing device according to the second aspect of the present invention, since the permanent magnet generator is driven only by the rotating force of the rotating body to generate power, the rotating body is rotating. As long as the power of the motor that rotates the oil supply pump is secured, the segment type oil film bearing pad can be lubricated.

[0011]

[Embodiment 1] FIG. 1 is a structural diagram showing a spot lubrication type tilting pad journal bearing device according to Embodiment 1 of the present invention. In the figure, a plurality of segment type oil film bearing pads 2 are radially arranged around a rotating body 1 driven to rotate, and a lubricating oil 4 is provided near a sliding surface between the rotating body 1 and the segment type oil film bearing pads 2. Supply pipe 3 for supplying oil. Oil is supplied to the oil supply port pipe 3 by forcibly circulating the lubricating oil 4 through the external pipe 8 by an oil supply pump 5 driven by a motor. The motor of the oil supply pump 5 is driven only by the rotational force of the rotating body 1. Further, the segment type oil film bearing pad 2 and the oil supply pipe 3 are connected to an oil tank 7.
Both ends of an external pipe 8 that circulates the lubricating oil 4 via the oil supply pump 5 are connected to the oil tank 7.

Therefore, in this oil supply system, the oil supply pump 5 for circulating the lubricating oil 4 is directly driven by the rotational force of the rotating body 1. In such an oil supply system, as long as the rotating body 1 continues to rotate, the supply of the lubricating oil 4 to the segment type oil film bearing pad 2 becomes possible continuously, and the conventional problem of loss of motor power causes The problem that lubrication cannot be performed is solved.

Embodiment 2 FIG. FIG. 2 is a structural view of a spot refueling bearing device according to the second embodiment, in which a permanent magnet generator is driven by the rotating force of a rotating body to generate power, and this power is supplied to a motor for a refueling pump. 1 shows an example of a system. That is, in this system, the permanent magnet generator 20 is connected to the rotating body 1, the generator 20 is driven by the rotation of the rotating body 1, and the electric power generated by the generator 20 is supplied to the motor 6 so that the refueling pump is provided. 5 is driven. Other configurations are the same as those in the first embodiment.

In such a system, the rotating body 1
As long as the motor continues to rotate, the power of the motor 6 for driving the oil supply pump 5 is secured by the permanent magnet generator 20, the lubricating oil can be supplied to the segment type oil film bearing pads 2, and the problem caused by the loss of power is solved. Is done.

Embodiment 3 FIG. Furthermore, by providing means between the generator 20 and the motor 6 for storing and holding the power generated by the generator 20 and supplying a constant power to the motor 6,
Can be driven at a constant speed, and stable supply of the lubricating oil 4 can be realized.

[0016]

As described above, according to the present invention, the lubricating oil can be continuously supplied by operating the oil supply pump while the rotating body is rotating, so that the power supply of the motor of the oil supply pump is reduced. It can supply the lubricating oil to the rotating sliding surface regardless loss, safe to support the rotary shaft Rutotomoni, one refueling
With pumps, it can be shared regardless of time and emergency
Simple and easy to maintain.
You.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing a spot lubrication type bearing device according to Embodiment 1 of the present invention.

FIG. 2 is a structural diagram showing a spot lubrication type bearing device according to Embodiment 2 of the present invention.

FIG. 3 is a structural view showing a conventional spot lubrication type bearing device.

FIG. 4 is a plan view showing a conventional spot lubrication type bearing device.

[Explanation of symbols]

1 rotating body, 2 segment type oil film bearing pad, 3 oil supply pipe, 4 lubricating oil, 5 oil supply pump, 6 motor,
7 oil tank, 8 external piping, 20 permanent magnet generator.

Claims (2)

(57) [Claims] 1. A segment type oil film bearing pad for supporting a rotating body, an oil supply pipe for supplying lubricating oil to a sliding surface of the segment type oil film bearing pad, and an oil tank containing the segment type oil film bearing pad and the oil supply pipe. One lubrication pump for supplying lubricating oil to the lubrication port , and
Spot refueling tee with motor to drive oil pump
Luting pad journal bearing device in lubrication system
There is always the above
Driving with only the rotational force of the rolling element as the driving force
Lubricating the bearing pad with the lubrication pump
A lubrication system for a spot lubrication type tilting pad journal bearing device, characterized in that: 2. A generator is driven by the rotational force of a rotating body.
To generate power and supply this power to the refueling pump motor.
2. A lubrication system for a spot lubrication type tilting pad journal bearing device according to claim 1, wherein:
M