JP2002130197A - Turbomachinery washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To almost uniformly clean the inside of turbomachinery over the whole turbomachinery. SOLUTION: This turbomachinery washer for cleaning the inside of the turbomachinery, has a supply means for supplying a cleaning fluid on a peripheral surface of an inner cylinder of the turbomachinery. The supply means has a nozzle on one end of the supply means, and cleans the inside of the turbomachinery by rotating the inner cylinder when injecting the cleaning liquid from the nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turbomachine cleaning apparatus for cleaning the inside of a turbomachine, particularly a blade of the turbomachine.

[0002]

2. Description of the Related Art An industrial turbomachine, for example, an air compressor or a gas turbine, has a plurality of moving blades provided around an inner cylinder and a plurality of moving blades provided on an inner surface of a vehicle cabin so as to face the moving blades. And a stationary blade. These turbomachines inhale various gases. Therefore, when these turbomachines are used for a long period of time, the blade surface of the turbomachine is contaminated, and the loss of dirt on the blade surface is increased, and the efficiency of the turbomachine is reduced.

[0003] In order to prevent such contamination of the blade surface, for example, in Japanese Patent Application Laid-Open No. 7-269302, blades for cleaning the blades of a compressor by introducing ice particles into an air inlet of a compressor. A method is disclosed. Further, Japanese Patent Laid-Open No. 6-1
Japanese Patent No. 46925 discloses a blade cleaning method in which the amount of a cleaning agent supplied from the suction side of the air compressor is adjusted in accordance with the amount of intake air of the air compressor.

[0004]

In these two prior art blade cleaning methods, a cleaning agent is introduced into the compressor from the air inlet side of the compressor, and the blade is cleaned by rotating the compressor. I have. Therefore, when cleaning a turbomachine having a plurality of stages, the upstream stage with respect to the air flow can be supplied with a sufficient amount of cleaning liquid to clean the inside of the turbomachine, for example, the blades. However, it is difficult to supply a sufficient amount of cleaning liquid for cleaning the inside of the turbomachine, for example, the blades, because the downstream stage is obstructed by the upstream moving blades / stationary blades. . In such a case, uneven cleaning may occur on the blades of the downstream stage.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides an outflow end on the peripheral surface of an inner cylinder and discharges a cleaning fluid from the outflow end so that the interior of the turbomachine is turbomachined. The purpose is to wash almost uniformly throughout. According to the present invention, in a turbomachine cleaning apparatus for cleaning the inside of a turbomachine, a supply unit for supplying a cleaning fluid is provided on a peripheral surface of an inner cylinder of the turbomachine, and the supply unit includes the cleaning fluid. The present invention relates to a turbomachine cleaning device that has a nozzle for injecting the cleaning fluid, and that rotates the inner cylinder while injecting the cleaning fluid from the nozzle, thereby cleaning the inside of the turbomachine.

[0006]

FIG. 1 shows a first embodiment of a turbomachine cleaning apparatus according to the present invention. Turbo machine 100
Has a rotating system inner cylinder 11, a stationary system inner cylinder or inner casing 12, and a vehicle compartment or outer casing 40. The stationary system inner cylinder 12 is, for example, a casing for a bearing, and has substantially the same diameter as the rotation system inner cylinder 11.
It is arranged on an extension of the rotation axis of the rotation system inner cylinder 11. A plurality of moving blades 20 are mounted on the peripheral surface of the rotating system inner cylinder 11. A plurality of stationary blades 30 are provided on the inner surface of the cabin 40.
Are mounted so as to face these rotor blades 20. Here, the moving blade 20 can rotate together with the rotating system inner cylinder 11, but the stationary blade 30 can be rotated in the casing 40 and the stationary system inner cylinder 1.
It does not rotate because it is attached to 2.

In this embodiment, a piping element 50, for example, a pipe, is provided in the inner cylinder 10 so that a cleaning fluid can flow through the piping element. The piping element 50 includes a stationary piping 51 and a rotating piping 52. The stationary piping 51 is disposed in the stationary inner cylinder 12, and the rotating piping 52 is disposed in the rotating inner cylinder 11. The rotating system pipe 52 includes an axial portion 55 and a radial portion 56. One end of the stationary piping 51 is connected to a cleaning fluid source (not shown) 60, and the other end of the stationary piping 51 is connected to one end of an axial portion 55 of the rotating piping 52 via a bearing 54. I have. The stationary system piping 5 is formed by the bearing 54.
1 and the axial portion 55 are in fluid communication. Therefore, the axial part 55 can rotate around the axis of the rotating system inner cylinder 11 together with the rotating system inner cylinder 11 while the stationary system piping 51 is stationary.

In order to balance in the circumferential direction during rotation,
The axial portion 55 is preferably arranged concentrically with the central axis of the inner cylinder 10. One end of the radial portion 56 is connected to the axial portion 55 and is formed so as to radially guide the fluid in the axial portion 55 to the peripheral surface of the rotary inner cylinder 11. The other end of the radial portion 56 is an outlet end 59
The outflow end 59 is formed by the rotating system inner cylinder 11.
Are arranged on the peripheral surface of the. The outflow end 59 is preferably located between a blade and a vane located adjacent thereto so that the cleaning fluid in the axial portion 55 can In the meantime, these wings are washed out intensively. By directing the outflow end 59 to the moving blade or the stationary blade, a specific blade can be easily cleaned. The outflow end 59 is a nozzle (not shown),
For example, a spray nozzle may be provided. Thereby, the cleaning fluid can be accelerated and ejected.

In the illustrated embodiment, another radial portion of the outflow end 59 is also provided at a position on the circumferential surface of the rotary system inner cylinder 11 on which the outflow end 59 is disposed on the opposite side in the circumferential direction.
Is arranged. Thus, the rotating system inner cylinder 11 including the radial portion 56 can rotate while maintaining a balance in the circumferential direction. As can be seen from the cross-sectional view shown in FIG. These radial portions 56 extend in the radial direction to the peripheral surface of the rotary system inner cylinder 11, and a plurality of outflow ends 59 are aligned at substantially equal intervals in the circumferential direction on the peripheral surface of the rotary system inner cylinder 11. Is provided. Therefore, the rotating system inner cylinder 11 can rotate while keeping a balance in the circumferential direction. By providing a plurality of outflow ends 59, the cleaning effect inside the turbomachine can be enhanced.

It is preferable that the number of outflow ends 59 arranged on the peripheral surface is determined according to the moving blade. Thus, by providing a single outflow end 59 with respect to one wing, the wing adjacent to each outflow end 59 can be particularly cleaning the vanes substantially evenly. In the present embodiment, one radial portion is formed to have one outflow end 59, but may have a plurality of outflow ends. For example, the circumferential portion of the pipe element extending in the circumferential direction may be connected to the circumferential end of the radial portion, and a plurality of outflow ends for discharging the cleaning fluid may be provided in the circumferential portion. Multiple outflow ends 5 for one vane or bucket
By providing 9, the cleaning effect inside the turbomachine can be further enhanced. These outflow ends 59
Can be placed across the turbomachine between stages of rotor blades and vanes to substantially evenly clean the entire interior of the turbomachine.

Here, the operation of the turbomachine cleaning apparatus of the present invention will be described. A cleaning fluid, for example, a cleaning liquid is supplied from a cleaning fluid source 60 (not shown) into the stationary system pipe 51. The flushing fluid then passes from the stationary system piping 51 through the bearing 54, the axial portion 55 of the rotating system piping 52, and one or more radial portions 56 to the discharge end 59.
And flows out from the outflow end portion 59. This makes it possible to clean the interior of the turbomachine, in particular the wings. By causing the cleaning fluid to flow out from the outflow end 59 while rotating the rotating system inner cylinder 11, the cleaning effect can be enhanced as described later.

By adjusting the outflow velocity of the cleaning fluid, the wing located far from the wing adjacent to the outflow end 59 can also be cleaned. By providing the outflow end 59 on the peripheral surface of the rotary system inner cylinder, particularly at a position distant from the air inlet, the blades located far from the air inlet can be easily cleaned. Since the cleaning fluid moves in the same direction as the flow direction F of the air by rotating the rotary system inner cylinder 11, the cleaning effect on the inside of the turbo machine can be further enhanced. Further, when the number of the outflow end portions 59 is smaller than the number of blades, for example, even when only one outflow end portion 59 is present, the outflow end portion 59 is rotated by rotating the rotary system inner cylinder 11. All vanes of the stage adjacent to end 59 can be cleaned.

In the above-described embodiment, the outflow end portion is arranged between the stationary blade and the moving blade in one stage. However, as shown in FIG.
The downstream end is further extended downstream with respect to and the second radial portion is further provided, so that the outflow end 59 can also be disposed between the stationary blade and the moving blade in a stage different from the stage described above. . This makes it possible to clean the inside of the turbomachine over the entire turbomachine. By providing a plurality of second radial portions, the cleaning effect inside the turbomachine can be further enhanced. Naturally, when a stationary system inner cylinder exists between two rotating system cylinders as in the illustrated embodiment, the stationary system cylinder needs to be connected to the stationary blade. Providing a nozzle at the outflow end 59 is included in the present embodiment.

FIG. 4 shows a second embodiment of the turbomachine cleaning apparatus of the present invention. As in the first embodiment,
The inner cylinder 10 is provided with a stationary system pipe 51 and a rotating system pipe 52 including an axial part 55 and a radial part 56, and the radial part 56 extends to the peripheral surface of the rotating system inner cylinder 11. In this embodiment, the cleaning fluid source 60
A supply pipe 58 that connects (not shown) and a substantially central portion of the stationary system pipe 51 is shown. As shown in FIG. 5, the supply pipe 58 penetrates the thick portion of the stationary blade 30 in the radial direction. The supply pipe 58 is connected to the stationary system pipe 51 from a cleaning fluid source (not shown) 60 through the wall of the casing 40, through the thick portion of the stationary blade 30. As a matter of course, in such an embodiment, the stationary system inner cylinder 12 needs to be connected to at least one stationary blade 30.

Further, in this embodiment, both ends of the stationary system pipe 51 are connected to two rotary system pipes 52 by a rotary joint 53, respectively. The rotary joint 53 has a bearing portion provided inside the static piping 51, and this bearing portion receives a part of the axial portion 55, whereby the static piping 51 and the axial portion 55 are received. And are in fluid communication. As in the previously described embodiments, each rotating system pipe 52 has one or more radial portions 56, whereby the upstream outlet end 59 and the downstream outlet end 59 with respect to the air flow direction F are provided. The outflow end 59 is arranged on the peripheral surface of the rotary system inner cylinder 11. Therefore, the upstream blade adjacent to the upstream outflow end 59 and the downstream blade adjacent to the downstream outflow end 59 can be simultaneously cleaned. By rotating the rotating system inner cylinder 11 as described above, the effect of cleaning inside the turbomachine can be further enhanced.

The number of the upstream outflow end 59 and the number of the downstream outflow end 59 may be one or more.
Number of upstream outflow ends 59 and downstream outflow ends 59
Is preferably equal to the number. This makes it possible to supply a substantially equal amount of the cleaning fluid to the upstream rotating system pipe and the downstream rotating system pipe, and to wash the upstream and downstream blades substantially uniformly.

It will be appreciated that the provision of one or more outflow ends 59 in one or more stages allows for substantially uniform cleaning throughout the turbomachine. Providing a nozzle at the outflow end 59 is also included in the present embodiment. A plurality of outflow end portions on the upstream side and a plurality of outflow end portions on the downstream side are arranged at equal intervals on the peripheral surface of the rotating system inner cylinder 11, and are circumferentially balanced when the rotating system inner cylinder 11 rotates. It is preferable to take

FIG. 6 shows a turbomachine cleaning apparatus according to a third embodiment of the present invention. In this embodiment, the outflow end 59 is provided on the outflow direction variable mechanism 80. As shown in FIG. 6, the outflow direction variable mechanism 80 includes a motor 81 and a base 8 inside or outside the rotating system inner cylinder 11.
Two. By driving the motor 81, the direction of the outflow end portion 59 located on the base 82 can be changed. To perform such an operation, a portion or all of the radial portion 56, including the outflow end 59, is preferably formed from a flexible material.

By changing the direction of the outflow end portion 59, the flow direction of the cleaning fluid can be changed. Therefore, by changing the direction of the cleaning fluid from, for example, the inner cylinder 10 side to the casing 40 side, the inside of the turbomachine, particularly, the entire blade adjacent to the outflow end can be cleaned. By providing a plurality of such outflow direction variable mechanisms 80, the blades adjacent to each outflow end portion 59 having these outflow direction variable mechanisms 80 can be washed substantially evenly. By rotating the rotating system inner cylinder 11, the effect of cleaning can be enhanced.

Naturally, such an outflow direction variable mechanism 80 is arranged at equal intervals on the peripheral surface of the rotating system inner cylinder 11 so as to balance in the circumferential direction at the time of rotation, and to allow the outflow end 59 to rotate. The provision of the nozzle in the present embodiment is included in the present embodiment.

[0021]

According to the invention described in each of the claims, the injection means is provided on the peripheral surface of the inner cylinder, and the cleaning fluid flows out from the injection means, so that the inside of the turbo machine extends over the entire turbo machine. This has a common effect that cleaning can be performed almost uniformly. Furthermore, according to the invention described in claim 3,
It is possible to achieve an effect that the blades of the turbomachine can be washed intensively.

Further, according to the invention described in claim 4,
There is an effect that a balance can be obtained in the circumferential direction when the rotation system inner cylinder rotates. Further, according to the fifth aspect of the present invention, the cleaning fluid can be almost uniformly sprayed from the inner cylinder side portion of the blade to the vehicle compartment side portion, so that the entire blade can be cleaned substantially uniformly.

Further, according to the invention described in claim 6,
An advantage is obtained in that the cleaning fluid can be easily supplied to the supply means located inside the inner cylinder.

[Brief description of the drawings]

FIG. 1 is an axial sectional view of a part of a turbomachine provided with a turbomachine cleaning device according to a first embodiment of the present invention.

FIG. 2 is a radial cross-sectional view of the turbomachine cleaning apparatus taken along line AA ′ of FIG. 1;

FIG. 3 is an axial sectional view of a part of a turbomachine provided with a turbomachine cleaning device according to another embodiment of the present invention.

FIG. 4 is an axial sectional view of a part of a turbomachine provided with a turbomachine cleaning device according to a second embodiment of the present invention.

5 is a cross-sectional view of a vane having a supply pipe provided inside along a line BB ′ in FIG. 4;

FIG. 6 is an axial sectional view of a part of a turbomachine provided with a turbomachine cleaning device according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Inner cylinder 11 ... Rotating system inner cylinder 12 ... Stationary system inner cylinder 20 ... Moving blade 30 ... Stationary blade 40 ... Car cabin 50 ... Piping element 51 ... Stationary system piping 52 ... Rotating system piping 53 ... Rotary joint 54 ... Bearing 55 ... Axial portion 56 ... Radial portion 58 ... Supply pipe 59 ... Outflow end 60 ... Cleaning fluid source 80 ... Outflow direction variable mechanism 81 ... Motor 82 ... Base 100 ... Turbomachinery

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H034 AA02 AA12 AA16 BB03 BB08 CC01 CC03 CC06 CC07 DD01 DD20 DD27 DD28 DD30 EE04 4F035 AA01 CA05 CD08 CE04 4F042 AA13 EA05

Claims (6)

[Claims] 1. A turbomachine cleaning apparatus for cleaning the inside of a turbomachine, comprising: an injection means for injecting a cleaning fluid on a peripheral surface of an inner cylinder of the turbomachine. 2. A turbomachine cleaning apparatus for cleaning the inside of a turbomachine, comprising: a supply unit for supplying a cleaning fluid on a peripheral surface of an inner cylinder of the turbomachine; A turbo machine cleaning device, comprising: a nozzle for injecting a fluid; and cleaning the inside of the turbo machine by rotating the inner cylinder while injecting the cleaning fluid from the nozzle. 3. The turbomachine cleaning apparatus according to claim 2, wherein the nozzle is arranged between a stationary blade and a moving blade of the turbomachine. 4. The turbomachine cleaning apparatus according to claim 2, wherein said supply means has a plurality of said nozzles, and said nozzles are arranged at equal intervals on a peripheral surface of said inner cylinder. 5. The turbomachine cleaning apparatus according to claim 2, wherein the nozzle is provided in an outflow direction variable mechanism for changing an outflow direction of the cleaning fluid. 6. The turbomachine according to claim 2, wherein the cleaning fluid is radially passed through a thick portion of a stationary blade of the turbomachine and supplied to the supply means. Cleaning equipment.