JPH07228A - Turbine blade cleaning device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a cleaning device that can efficiently perform cleaning without damaging a coating applied to a surface of a turbine blade [Configuration] When a drive motor 5 is driven, a rotating chuck 7 rotates, Along with this, the rotary brush 2 also rotates. In this rotating state, when the side hairs 34 of the rotary brush are applied to the side surface of the blade protruding from the turbine shaft, the side hairs 34 rub the surface of the blade for cleaning. At this time, even if the rotary brush 2 is inserted all the way in, the tip hair body 35 provided on the tip end surface does not come into contact with the turbine shaft, and the hard shaft body 21 does not directly contact the turbine shaft and is applied to the surface of the turbine shaft. Does not damage the coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turbine blade cleaning device, and more particularly, to a turbine blade cleaning device used for cleaning a member having a large number of curved blades protruding around an axis thereof.

[0002]

2. Description of the Related Art As shown in FIG. 8, a turbine 70 is provided with a large number of curved blades 72 projecting around a long turbine shaft 71 so that a gas such as steam can be efficiently collided to obtain a large rotational force. It is set up. When the turbine 70 is used for a long period of time, contaminants are accumulated on the surfaces of the turbine shaft 71 and the blade 72, so that the cleaning is regularly performed. Here, the surface of the turbine shaft 71 and the blade 72
The surface of is covered with a relatively soft coating in consideration of corrosion resistance and abrasion resistance, and is carefully wiped and cleaned manually by using a waste cloth etc. so as not to damage this coating. Is the actual situation.

[0003]

Therefore, the cleaning work of the turbine is inefficient, and it has been desired to develop a cleaning device.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a turbine blade cleaning apparatus which can efficiently perform cleaning without damaging the coating.

[0005]

In order to achieve the above object, according to the present invention, a rotary brush includes a shaft body, side hairs provided around the shaft body, and a tip end of the shaft body. It is configured with a tip hair body provided facing toward.

[0006]

In the present invention constructed as described above, when the drive motor is driven, the rotary chuck rotates, and the rotary brush also rotates accordingly. In this rotating state, when the side bristles of the rotating brush are applied to the side surface of the blade protruding from the turbine shaft, the side bristles rub the surface of the blade for cleaning.
At this time, when the rotating brush body is inserted all the way, the tip bristles contact the turbine shaft and the tip of the hard rotating shaft does not directly contact the surface of the turbine shaft, damaging the coating applied to the surface of the turbine shaft. Absent.

[0007]

As described above, according to the present invention, the rotary brush has the shaft body, the side hairs provided around the shaft of the shaft body, and the tip provided at the tip of the shaft body toward the front. Since it is composed of hairs, it is possible to provide a turbine blade cleaning device that can efficiently clean the turbine without damaging it.

[0008]

EXAMPLE 1 Example 1 to which the present invention is applied based on FIGS. 1 to 7 below.
Will be described in detail. The first embodiment shows an example suitable for cleaning a large turbine blade. As shown in FIGS. 1 and 2, the cleaning device includes a cylindrical cleaner main body 1 that bends at an intermediate portion and the cleaner main body. 1 is composed of a rotating brush 2 that is replaceably attached to the tip of the cleaner 1.
The grippers 3 and 3 are provided on both sides of the cleaner 1, so that the cleaner body 1 can be carried.

The cleaner body 1 is provided with a housing case 6 for housing the drive motor 5 at one end of the tubular body 4, and a tip case having a rotary chuck 7 for fixing the rotary brush 2 at the other end. 8 is provided at a right angle to the body portion 4.

The drive motor 5 is configured to be turned on / off by a switch 9, and a rotary shaft 11 is connected to a drive shaft 10 of the drive motor 5. A first bevel gear 13 is connected to the other end of the rotary shaft 11 via a coupling 12. A second bevel gear 14 meshes with the first bevel gear 13 and is connected to a rotary chuck 7 that rotates in a direction perpendicular to the rotary shaft 11. This rotating chuck 7
Is rotatably fixed to a bearing 15 provided at the tip of the tip case 8, and the rotary brush 2 can be fastened and released at the tip by a tightening ring 16.

In the rotary brush 2, the base end of a long shaft 21 made of metal is used as a mounting portion 22, and is inserted into the rotary chuck 7 described above, and then a tightening ring 16 is tightened and fixed. There is. The shaft body 21 is provided on the front side of the mounting portion 22.
The flocked body 30 is wound around the peripheral surface up to the tip end of the blade, and is formed longer than the depth of the blade 72 that is the body to be cleaned. As shown in FIG. 4, the flocked body 30 is formed by sandwiching a large number of long bristled hair bodies 32 at the opening surface of a long sandwiching substrate 31 having a substantially U-shaped cross section. Then, the bottom surface of the sandwich substrate 31 is sequentially wound around the shaft body 21 in a spiral shape,
The side hairs 34 are fixed outward from the peripheral surface of the shaft body 21 and cover the peripheral surface of the shaft body 21. The hair body 32
Is formed of a soft material such as a nylon material so as not to damage the coating that covers the surface of the blade 72, and the bottom of the sandwiching substrate 31 is fixed by welding at the winding start point of the flocked body 30. There is.

As shown in FIG. 5, a fixing groove 23 is provided on the tip surface of the shaft body 21, and a mounting hole 24 is provided at the groove bottom of the fixing groove 23. The tip of the flocked body 30 is twisted and fixed by a screw 33 that is fitted into the fixing groove 23 and screwed into the mounting hole 24, as shown in FIG. Therefore, the hair body 32 is covered by the side hair body 34 standing on the peripheral surface of the shaft body 21, and the tip hair body 35 standing on the tip surface is formed.

The operation of cleaning the blade 72 of the turbine 70 shown in FIG. 8 by the cleaning device of the first embodiment having the above-mentioned structure will be described. The switch 9 is turned on to operate the drive motor 5. This causes the drive shaft 10 to rotate, and this rotation causes the rotary shaft 11 and the coupling 1 to rotate.
2, first bevel gear 13, second bevel gear 14, rotary chuck 7
Is driven to rotate the shaft body 21. Then, when the side hairs 34 are lightly pressed against the surface of the blade 72 while being rotated, the contaminants adhering along the curved surface of the blade are removed and cleaning is performed. At this time, insert the rotating brush 2 excessively or insert the rotating brush 2
Even if the insertion angle is incorrect, the tip of the rotary brush 2 is provided with the tip bristle 35 in the forward direction. Therefore, the tip bristle 35 hits the turbine shaft 71 or the blade 72, and the metallic shaft 21 It is prevented that the tip of the blade directly hits the turbine shaft 71. This prevents the coating applied to the surfaces of the turbine shaft 71 and the blade 72 from being damaged. Therefore, the cleaning operation can be smoothly performed without damaging the turbine shaft 71 and the blade 72.

<Embodiment 2> Embodiment 2 is an example in which the cleaner body 41 has a pistol shape as shown in FIG. The second embodiment is particularly suitable for cleaning a small turbine, and the grip portion 43 is provided on the base of the cylindrical cleaner main body 41.
Is bent and provided. The cleaning device main body 41 is provided with a storage case 46 for storing the drive motor 45 at one end of the tubular body 44, as in the first embodiment.
A rotary chuck 47 for fixing the rotary brush 42 to the tip thereof.
Is provided.

The drive motor 45 is turned on / off by a switch 49, and a drive shaft 50 of the drive motor 45 is connected to a rotary shaft 51. The other end of the rotary shaft 51 is connected to the rotary chuck 47 via a coupling 52. The rotary chuck 47 is rotatably fixed to a bearing 55 provided at the tip of the tip case 48, the mounting portion 52 of the shaft body 21 of the rotary brush 2 is inserted, and the rotary chuck 47 can be fastened by a fastening ring 56. .

The rotary brush 42 of the second embodiment is smaller than the rotary brush 2 of the first embodiment and has the same structure, so that the description thereof will be omitted.

The rotary brush 2 according to the first embodiment.
In the tip surface of the above, an example in which the flocked body 30 is fitted in the fixing groove 23 and fixed by the screw 33 is shown, but it is not always necessary to provide the fixing groove 23 or fix with the screw 33, and instead of these, the shaft body 21 Appropriate fixing means such as pinning or welding to the tip surface can be used.

In this embodiment, the bristle tip 30 is used to form the tip bristle 35. However, the tip bristle 35 need not necessarily be provided integrally with the side bristle 34, but is formed separately from the side bristle 34. You may.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view.

FIG. 2 is a side view.

FIG. 3 is a perspective view of a tip portion of a rotating brush.

FIG. 4 is a perspective view of a part of the hair transplant body.

FIG. 5 is a perspective view of a tip portion of a shaft body.

FIG. 6 is a cross-sectional view of a tip portion of a rotating brush.

FIG. 7 is a partially cutaway sectional view showing a second embodiment.

FIG. 8 is an exploded perspective view of the turbine.

[Explanation of symbols]

1 ... Cleaner body 2 ... Rotating brush 7 ... Rotating chuck
21 ... Shaft 34 ... Side hair 35 ... Tip hair

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeho Shibata 25 Shintomi, Futtsu-shi, Chiba Tokyo Electric Power Company Futtsu thermal power plant (72) Inventor Takayoshi Guri 5 of 228 Nishitomita-cho, Yokkaichi-shi, Mie ( 72) Inventor Toshiaki Suzuki 15-15, Uechi, Okazaki City, Aichi Prefecture

Claims (1)

[Claims] 1. A cleaning device for a turbine blade, wherein a main body of a cleaning machine is provided with a rotary chuck that is rotated by the drive of a drive motor, and a rotary brush is replaceably attached to the rotary chuck. A turbine blade cleaning device comprising: a body, a side hair body provided around an axis of the shaft body, and a tip hair body provided forward at a tip of the shaft body.