JP5676925B2 - Oil smoke leak prevention device for vertical shaft rotating machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an oil smoke leakage prevention device for a vertical shaft rotating machine, and more particularly to a vertical shaft rotating machine suitable for preventing leakage of lubricating oil used for lubricating and cooling a bearing of the vertical shaft rotating machine. The present invention relates to an oil smoke leakage prevention device.

Conventionally, as shown in FIG. 4, lubricating oil 6 such as turbine oil has been used for lubricating and cooling the bearing 7 of the rotating shaft 2 of the vertical rotating machine 1, but due to frictional heat due to the rotation of the rotating shaft 2. The lubricating oil 6 becomes oil smoke and fills the bearing cover 3. Part of the oil smoke filled in the bearing cover 3 goes out from an oil mist seal portion 4 provided at the center of the upper surface of the bearing cover 3 and through which the rotary shaft 2 passes, and is an accessory of the vertical shaft rotating machine 1 Lubricate and stain with oil.
As a result, oil adheres to the stator, rotor, or peripheral equipment of the generator coaxial with the vertical axis rotating machine 1 and adsorbs dust in the air, which adversely affects the insulation performance.
Moreover, the periphery of the vertical shaft rotating machine 1 is soiled by the adhesion of oil and becomes slippery, which is a risk factor for work.

  In order to prevent such leakage of the lubricating oil 6 to the outside, labyrinth type, gland packing type, and carbon packing type are used.

In Patent Document 1 below, in a brush motor unit in which a helical gear is provided on the output shaft, a helical gear is provided on the output shaft in order to prevent grease oil from entering the motor housing from the helical gear portion. On the rotating shaft in the motor housing of the brush motor, only in one direction (when the helical gear rotates in that one direction, the helical gear's helical teeth push the grease oil in the helical gear part toward the brush motor). A rotating one-way fan is provided, and the blades of the one-way fan are configured to generate at least wind toward the gap between the output shaft and the bearing that supports the output shaft when the one-way fan is rotating. An oil intrusion prevention structure for a brush motor unit is disclosed
Patent Document 2 below describes a movable blade mechanism and a lubricating oil on the rotating labyrinth side in order to improve the sealing performance during operation and prevent leakage of the lubricating oil even if the operation / stop is repeated. A return mechanism, and when the movable blade mechanism stops rotating, the movable blade portion is guided by the female threaded portion by the biasing force of the spring and moves upward while rotating to close the lubricating oil return channel at the channel opening / closing unit. When rotating, the movable blade portion is guided by the female screw portion against the urging force of the spring due to the wind pressure acting on the blade portion and moves downward while rotating, and the flow channel opening / closing portion opens the lubricating oil return flow channel, When the lubricating oil return mechanism stops rotating, the ball moves radially inward by the biasing force of the spring to close the lubricating oil return flow path, and when rotating, the spherical force of the spring acts by the centrifugal force acting on the ball. To move radially outward against lubrication The return channel was to open, there is disclosed a labyrinth seal structure of the vertical shaft rotary machine.

JP 2009-65743 A Japanese Patent Laid-Open No. 2002-156048

  However, the conventional labyrinth type, gland packing type, and carbon packing type have a problem that the structure is complicated.

  An object of the present invention is to provide an oil smoke leakage prevention device for a vertical shaft rotary machine that can prevent the oil smoke of a lubricating oil with a simple structure.

The oil smoke leakage prevention apparatus for a vertical shaft rotating machine according to the present invention is a vertical shaft rotation provided with a bearing oil tank (5) in which lubricating oil (6) for lubricating and cooling the bearing (7) of the rotating shaft (2) is stored. a smoke security apparatus for machine (1), the oil together with the closing oil mist seal portion provided in the central portion of the upper surface of the bearing cover of the standing shaft rotary machine (3) to (4) via the inter-gap as blown toward the opposite side of the mist seal portion, a plurality mounted at equal intervals along the circumferential direction of the rotary shaft on an outer peripheral surface between said oil mist seal portion of the rotary shaft and the bearing oil vessel A plurality of wings (10) and the plurality of wings are provided so as to surround the wings along the circumferential direction of the rotating shaft with a gap therebetween, and an upper end surface is attached to an inner side surface of the upper surface of the bearing cover. And a plurality of the walls by rotation of the rotating shaft. Rotating the wings of the sheet so that the smoke of the lubricating oil generated by the frictional heat generated by the rotation of the rotating shaft is pushed back toward the bearing oil tank by the wings of the plurality of sheets so as not to leak out from the oil mist seal part. In addition, a part of the oil smoke of the lubricating oil is applied to the wall, returned to the oil droplets, and dropped into the bearing oil tank .
Here, before Symbol plurality of blades is, the band attached to the outer peripheral surface of the rotary shaft with (30) mounted on said rotary shaft, said plurality of blades each, of rectangular parallelepiped shape blade body (11) And a wing attachment member (12, 12 ') attached to the end side of the wing body, and a wing attachment member insertion hole (30a, 30a') into which the wing attachment member is inserted into the wing attachment surface side of the band. ) Are formed at predetermined intervals along the longitudinal direction of the band, and a screw hole (12a) to be screwed into a screw (40) at the center of the surface of the wing mounting member opposite to the wing body And a screw insertion hole (30b) for inserting the screw is formed at the center of the wing attachment member insertion hole on the surface opposite to the wing attachment surface of the band. Good.
Concave and convex strips are formed on the outer peripheral surface of the wing mounting member (12 ′), and are complementary to the concave and convex strips of the wing mounting member on the inner peripheral surface of the wing mounting member insertion hole (30a ′). Other uneven stripes may be formed.

The oil smoke leakage prevention device for a vertical shaft rotating machine of the present invention has the following effects.
(1) A plurality of wings are attached at equal intervals along the circumferential direction of the rotary shaft so as to block the oil mist seal provided at the center of the upper surface of the bearing cover with a slight gap. Since it is only necessary to provide a wall surrounding the wing along the circumferential direction of the rotating shaft on the upper surface of the bearing cover, leakage of lubricating oil can be prevented with a simple structure.
(2) Since leakage of lubricating oil smoke can be prevented, lubrication and fouling due to oil of vertical shaft rotating machine accessories, deterioration of insulation performance, surrounding fouling and work hazards can be eliminated.
(3) Since the smoke of the lubricating oil can be liquefied by being applied to the wall and then returned to the bearing oil tank, it is possible to prevent a decrease in the lubricating oil and to reduce the number of times the lubricating oil is replenished.

It is a figure for demonstrating the structure of the oil smoke leak prevention apparatus for vertical shaft rotating machines by one Example of this invention. It is a figure for demonstrating the attachment method to the rotating shaft 2 of the 16 wing | blade 10 shown in FIG.1 (b). It is a figure for demonstrating the modification of the wing | blade attachment member 12 shown to Fig.2 (a), and the modification of the wing attachment member insertion hole 30a shown in FIG.2 (b). It is a figure for demonstrating the subject of the conventional vertical axis | shaft rotary machine.

  For the above purpose, vertical shaft rotation is performed so that the oil mist seal portion provided at the center of the upper surface of the bearing cover of the vertical shaft rotating machine is closed with a slight gap and the air is blown toward the opposite side of the oil mist seal portion. Attaching a plurality of wings at equal intervals along the circumferential direction of the rotating shaft to the outer peripheral surface of the rotating shaft of the machine, and surrounding the plurality of wings along the circumferential direction of the rotating shaft through a slight gap, This was realized by providing a wall on the upper surface of the bearing cover of the vertical shaft rotating machine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an oil smoke leakage prevention device for a vertical shaft rotating machine according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 (a) and 1 (b), an oil smoke leakage prevention device for a vertical shaft rotating machine according to an embodiment of the present invention is provided with oil provided at the center of the upper surface of a bearing cover 3 of the vertical shaft rotating machine 1. The vertical shaft rotating machine 1 rotates so as to close the mist seal portion 4 with a slight gap (for example, about several centimeters) and to blow air toward the opposite side of the oil mist seal portion 4 (that is, downward or obliquely downward). The 16 wings 10 attached to the outer peripheral surface of the shaft 2 at equal intervals along the circumferential direction of the rotating shaft 2 and the 16 wings 10 are connected to the rotating shaft 2 through a slight gap (for example, about several centimeters). And a wall 20 provided on the upper surface of the bearing cover 3 of the vertical axis rotating machine 1 so as to surround the circumferential direction of the vertical axis rotating machine 1.

Next, a method for attaching the 16 wings 10 to the rotary shaft 2 will be described with reference to FIGS.
The 16 wings 10 are attached to the rotary shaft 2 using a band 30 (see FIG. 2B) attached to the outer peripheral surface of the rotary shaft 2.
Therefore, as shown in FIG. 2 (a), each wing 10 is composed of a rectangular parallelepiped wing body 11 and a wing mounting member 12 attached to the terminal side of the wing body 11 (the right side in the figure). Further, as shown in FIG. 2 (b), 16 wing attachment member insertion holes 30 a into which the wing attachment members 12 of the wing 10 are inserted are provided on the surface (wing attachment surface) side of the band 30. It is formed at 16 positions each having an interval of 22.5 ° when attached to the rotary shaft 2.
In addition, a screw hole 12 a that is screwed with a screw 40 (see FIG. 2C) is formed at the center of the surface of the wing mounting member 12 on the side opposite to the wing body 11. A screw insertion hole 30b for inserting the screw 40 is formed at the center of the wing attachment member insertion hole 30a.

The 16 wings 10 are attached to the rotating shaft 2 according to the following procedure.
(Procedure 1) As shown in FIG. 2 (c), after the wing mounting member 12 of the wing 10 is inserted into the wing mounting member insertion hole 30a of the band 30, the wing body 11 is blown with a desired wind pressure and direction. Adjust the angle.
(Procedure 2) As shown in FIG. 2D, after inserting the screw 40 from the screw insertion hole 30b of the band 30, the screw 40 is turned and screwed into the screw hole 12a formed in the wing mounting member 12. To attach the wing 10 to the band 30.
(Procedure 3) The remaining 15 wings 10 are attached to the band 30 by repeating Procedure 1 and Procedure 2.
(Procedure 4) After winding the band 30 attached with the 16 wings 10 to the position where the 16 wings 10 of the rotary shaft 2 of the vertical shaft rotating machine 1 are attached, band fixing means such as bolts and nuts are attached to both ends of the band 30 Use to fix.

In order to facilitate the angle adjustment of the wing body 11 in the above procedure 2, for example, 12 projections 12b are formed on the wing mounting member 12 ′ as in the wing mounting member 12 ′ shown in FIG. By providing the outer circumferential surface at equal intervals along the circumferential direction of the wing mounting member 12 ′, the ridges are formed on the outer circumferential surface of the wing mounting member 12 ′, and the wing mounting member insertion hole 30a shown in FIG. As shown in FIG. 5, the twelve protrusions 30c are provided on the inner peripheral surface of the wing mounting member insertion hole 30a ′ at equal intervals along the circumferential direction of the wing mounting member insertion hole 30a ′, thereby An uneven strip complementary to the strip may be formed on the inner peripheral surface of the wing mounting member insertion hole 30a ′.
Thereby, the angle adjustment of the wing body 11 can be performed at intervals of 30 °.

  By attaching the oil smoke leakage prevention device for the vertical shaft rotating machine configured as described above to the vertical shaft rotating machine 1, the 16 blades 10 can be rotated by the rotation of the rotating shaft 2. The oily smoke of the lubricating oil 6 generated by the frictional heat generated by the oil can be pushed back toward the bearing oil tank 5 by the 16 blades 10 so as not to leak out from the oil mist seal portion 4, and the oily smoke of the lubricating oil 6 A part can be applied to the wall 20 to return to the oil droplets and dropped into the bearing oil tank 5.

In the above description, the number of wings 10 is 16. However, the number of wings 10 may be determined according to the wind pressure.
Further, although the oil smoke leakage prevention device for the vertical shaft rotating machine has the wall 20, if the length of the wing 10 is increased, the oil smoke of the lubricating oil 6 is removed from the oil mist seal portion 4 without the wall 20. To prevent leakage.

DESCRIPTION OF SYMBOLS 1 Vertical axis | shaft rotary machine 2 Rotating shaft 3 Bearing cover 4 Oil mist seal part 5 Bearing oil tank 6 Lubricating oil 7 Bearing 10 Wing 11 Wing body 12, 12 'Wing mounting member 12a Screw hole 12b Projection 20 Wall 30 Bands 30a, 30a' Wing mounting Member insertion hole 30b Screw insertion hole 30c Projection 40 Screw

Claims (3)

An oil smoke leakage prevention device for a vertical shaft rotating machine (1) comprising a bearing oil tank (5) in which lubricating oil (6) for lubricating and cooling the bearing (7) of the rotating shaft (2) is stored ,
Oil mist seal portion provided in the central portion of the upper surface (4) to blow toward the opposite side of the oil mist seal portion with closing through the inter-gap of the bearing cover of the standing shaft rotary machine (3), wherein a plurality of blades mounted at equal intervals along the circumferential direction of the rotary shaft on an outer peripheral surface between the oil mist seal portion of the rotating shaft and the bearing oil vessel (10),
A wall (20) provided so as to surround the plurality of wings along the circumferential direction of the rotating shaft via a gap and having an upper end surface attached to an inner surface of the upper surface of the bearing cover. And
The plurality of blades are rotated by rotation of the rotating shaft, and the oil smoke generated by frictional heat generated by rotation of the rotating shaft is pushed back toward the bearing oil tank by the plurality of blades. In order to prevent leakage from the seal part to the outside, a part of the oil smoke of the lubricating oil was applied to the wall, returned to the oil droplets, and dropped into the bearing oil tank,
An oil smoke leakage prevention device for a vertical shaft rotating machine. The plurality of wings are attached to the rotary shaft using a band (30) attached to the outer peripheral surface of the rotary shaft,
Each of the plurality of wings includes a rectangular parallelepiped wing body (11) and a wing attachment member (12, 12 ') attached to the terminal side of the wing body,
On the wing mounting surface side of the band, wing mounting member insertion holes (30a, 30a ′) into which the wing mounting member is inserted are formed at predetermined intervals along the longitudinal direction of the band,
A screw hole (12a) to be screwed with the screw (40) is formed at the center of the surface of the wing mounting member opposite to the wing body,
A screw insertion hole (30b) for inserting the screw is formed at the center of the wing attachment member insertion hole on the surface side opposite to the wing attachment surface of the band.
The oil smoke leakage prevention device for a vertical shaft rotating machine according to claim 1 , characterized in that: Concave and convex strips are formed on the outer peripheral surface of the wing mounting member (12 ′),
On the inner peripheral surface of the wing mounting member insertion hole (30a ′), other concavo-convex strips complementary to the concavo-convex strips of the wing mounting member are formed.
The oil smoke leakage prevention device for a vertical shaft rotating machine according to claim 2 , characterized in that:

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