JPH06185446A - Movable blade water turbine device and disassembling and assembling method thereof - Google Patents

Abstract

PURPOSE:To disassemble and assemble a movable blade runner part without relationship with a generator or a water turbine main shaft by forming connection between an upper pressure oil introducing pipe and a lower pressure oil introducing pipe in a fitting structure, and connecting a connecting part between a part in the water turbine main shaft of an operation transmitting means and a part in a movable blade water turbine runner by means of a screw. CONSTITUTION:An upper pressure oil introducing pipe 10 and a lower pressure oil introducing pipe 11 are assembled so as to be slidably movable mutually in a shaft direction by being sealed oiltightly. When a movable blade runner part and a water turbine main shaft 4 are separated from each other, a tip screw part of an upper operation transmitting pipe 13 is unscrewed by a generator inside pressure oil introducing device part under remote control, and the upper operation transmitting pipe 13 and a lower operation transmitting pipe 14 are separated from each other. Next weight of the movable blade runner part is received by a stand or the like from below, and in a condition where the upper pressure oil introducing pipe 10 and the upper operation transmitting pipe 13 are installed in the water turbine main shaft 4 as they are, a fastening bolt 9 is loosened and removed. When the movable blade runner part is moved downward in this condition, the upper pressure oil introducing pipe 10 and the lower pressure oil introducing pipe 11 are separated from each other, and the movable blade runner part is separated from the water turbine main shaft 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure oil introduction pipe connection structure for a movable-blade turbine and a method for assembling and disassembling the movable-blade turbine.

[0002]

2. Description of the Related Art Hereinafter, a runner boss 1, a runner wing 2, a runner cone 3 and parts included therein are referred to as a "movable wing runner".

An example of the structure of a power generation facility using a movable turbine
As shown in FIG. In the equipment shown in FIG. 5, the pressure water guided from the upper pond to the casing 7 via the penstock is guided to the upper cover 5, the bottom ring 19 and the lower cover 6 and flows into the runner blade 2. Then, the energy becomes rotational force (torque) and is transmitted to the runner boss 1 and the water wheel axle 4, and the generated energy is
Becomes

An example of a conventional movable blade runner is shown in FIG.
The structure will be described below. The movable blade runner, which aims to operate most efficiently according to the amount of flow,
It has a runner blade manipulating device 20 for simultaneously operating a plurality of runner blades 2. The pressure oils 21a and 21b for operating the runner blade operating device 20 are pressurized outside the water turbine and the rotating part of the generator, and are introduced into the generator shaft center hole 24 from the pressure oil introducing device provided above the generator shaft 22. Then, the water turbine shaft center hole 23, and the upper pressure oil introduction pipe 10 and the lower pressure oil introduction pipe 11 in the center hole 23 are guided to the runner blade operating device 20.

Pressure oil 2 introduced to the runner wing operation device 20
By the force of 1a and 21b, the piston cylinder-25 of the movable device moves in the axial direction of the movable blade runner, and along with the movement of the piston cylinder-25, the piston cylinder-25.
A linkage 26 coupled to 25 likewise moves axially of the movable blade runner. The link mechanism 26 is pivotally attached to a lever member (not shown) fixed to the shaft portion of the runner blade 2, and the runner blade 2 rotates about its axis 2A as the link mechanism 26 moves in the axial direction. To do.

Stroke 27 of piston cylinder 25
Is transmitted to the stroke detection device provided on the upper part of the generator shaft 22, and the vertical operation transmission pipes 13 and 14 are the vertical pressure oil introduction pipes 1.
It is provided inside 0 and 11.

FIG. 7 shows the structure of the vertical pressure oil introduction pipe at the connecting portion between the water wheel shaft 4 and the runner boss 1 of the prior art (details of portion B in FIG. 6).
Shown in. The lower pressure oil introduction pipe 11 is provided in the center hole of the runner boss 1, and the upper flange 11A at the upper end thereof is fixed to the runner boss 1 by a pressure oil introduction pipe fixing bolt 12. The flange 10A at the lower end of the upper pressure oil introduction pipe 10 is fixed to the runner boss 1 by the pressure oil introduction pipe fixing bolt 12 via the upper flange 11A of the lower pressure oil introduction pipe 11.
The vertical operation transmission pipes 13 and 14 are the vertical pressure oil introduction pipes 10 and 1.
1 Fastened with operation transmission connection bolt 16 near the connection part,
Further, in the vicinity of the fastening portion of the vertical operation transmission pipes 13 and 14,
Restrain the radial movement of the vertical operation transmission pipes 13 and 14,
A guide plate 15 for smoothing the vertical movement (stroke) is installed.

With the conventional structure, the entire installation and assembly procedure including the water turbine and the generator is carried out by first arranging the movable blade runner at a fixed position except for the concrete burying portion, and then using the lower pressure oil contained in the movable blade runner. The upper pressure oil introduction pipe and the upper operation transmission pipe are bolted to the introduction pipe and the lower operation transmission pipe. After that, the turbine main shaft is assembled so as to wrap the upper pressure oil introduction pipe and the upper operation transmission pipe, all the turbines including the cover are assembled, and all the generators are assembled. The whole disassembly procedure including the turbine and generator is the reverse of the above assembly procedure.

Therefore, as in the conventional structure, when the connection portion of the vertical pressure oil introduction pipe and the vertical operation transmission pipe is the flange structure bolt connection, the movable blade runner is first assembled at the time of assembly and finally disassembled at the time of disassembly. It was a procedure to do.

[0010]

In the above conventional structure, when the equipment is assembled, the movable blade runner portion is first assembled, and when disassembling, the procedure is fixed such that the movable blade runner portion is disassembled last. Has been linked to one series, and, for example, if the acquisition of parts for the movable blade runner is delayed, the whole procedure will be delayed. Further, even when inspecting the movable blade runner portion after service, the movable blade runner portion cannot be disassembled unless the entire equipment is disassembled, making it difficult to shorten the inspection period.

An object of the present invention is to assemble and disassemble a movable-blade turbine in the entire turbine, including the entire turbine / generator, in which the movable-blade runner is assembled at any stage of the overall assembly / disassembly procedure. It is to be able to disassemble.

[0012]

DISCLOSURE OF THE INVENTION The present invention relates to a procedure for assembling and disassembling a movable turbine including a turbine and a generator as a whole.
In order to be able to assemble the movable vane runner at any stage and disassemble it at any stage, a cylindrical surface concentric with the axis of the turbine main shaft is provided below the upper pressure oil introduction pipe provided in the turbine main shaft. , A cylindrical counterbore hole concentric with the axis of the water turbine main shaft is provided on the inner peripheral side of the upper part of the lower pressure oil introduction pipe fixed in the runner boss, and the cylindrical surface of the counterbore hole and the upper pressure oil. The structure is such that it fits tightly to the cylindrical surface of the lower part of the introduction pipe, and a seal is made between the cylindrical surface of the lower part of the upper pressure oil introduction pipe and the cylindrical surface of the upper part of the lower pressure oil introduction pipe. A means is provided, and the connection portion between the portion of the operation transmission means in the pressure oil introduction pipe in the turbine main shaft and the portion in the movable vane turbine runner is screwed.

The connecting portion between the upper pressure oil introducing pipe and the lower pressure oil introducing pipe is
Instead of the above fitting, a female screw may be provided on the upper portion of the lower pressure oil introducing pipe and a male screw may be provided on the lower portion of the upper pressure oil introducing pipe, and both may be connected by screw connection.

[0014]

According to the above construction, when the connecting portion between the portion of the operation transmitting means in the pressure oil introducing pipe in the turbine main shaft and the portion in the movable vane turbine runner is separated, the portion of the operation transmitting means in the turbine main shaft is separated. When is turned from the water wheel side, the screw connection is released and the connection portion is separated. Since the pressure oil introduction pipe in the turbine main shaft and the pressure oil introduction pipe in the movable vane water turbine runner are only fitted to each other on the cylindrical surface, after separating the operation transmission means in the pressure oil introduction pipe, If the fastening bolts that fasten the turbine main shaft and the movable vane turbine runner are released and the turbine main shaft and / or the movable vane turbine runner are moved away from each other in the axial direction of the turbine main shaft, the pressure oil introduction pipes are fitted together. The part that is in contact with the hydraulic oil comes out with the movement, and the pressure oil introduction pipe in the turbine main shaft and the pressure oil introduction pipe in the movable vane turbine runner are separated. Since the portions of the pressure oil introducing pipe that are fitted to each other are sealed by the sealing means when they are fitted to each other, the pressure oil outside the pressure oil introducing pipe and the pressure oil inside the pressure oil introducing pipe are They don't mix with each other.

A female screw is provided concentrically with the water turbine main shaft on the inner peripheral side of the upper portion of the lower pressure oil introduction pipe fixed in the movable blade runner, and is concentric with the water turbine main shaft below the upper pressure oil introduction pipe provided in the water turbine main shaft. When a male screw is provided on the lower pressure oil introduction pipe and the upper pressure oil introduction pipe are screw-connected, after separating the operation transmission means, rotate the upper pressure oil introduction pipe from the turbine main shaft side to release the screw connection, By releasing the fastening bolts connecting the turbine main shaft and the movable-blade turbine runner, the turbine main shaft and the movable-blade turbine runner can be separated.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an assembly diagram of the entire inner structure of a movable blade runner of a movable blade turbine apparatus according to the present invention and a turbine shaft 4. The movable blade runner includes a cylindrical runner boss 1 having one end closed at a surface connected to the turbine main shaft 4 and the other end open, and a plurality of runner blades 2 radially connected to the axis of the runner boss 1. ,
A runner wing operation device 20 which is installed in the runner boss 1 to operate the runner wing 2 and a truncated cone-shaped runner cone 3 which is connected to an end of the runner boss 1 and covers the open end of the runner boss 1. Has been done.

The runner blade operating device 20 is a stepped cylindrical hollow fixed shaft 20A fixed on the central axis of the runner boss 1 and having an outer diameter successively reduced in four steps, and the fixed shaft 20A.
The outer diameter of the cylindrical moving cylinder upper part 20B, which is concentrically and slidably fitted on the outer periphery of the portion 20J having the outer diameter of the second step, and the outer diameter of the fixed shaft 20A, are the third step. A piston 20C fixed to a size portion 20K with a nut 20E and slidably fitted on an inner peripheral surface of the moving cylinder upper portion 20B, and an outer diameter of the fixed shaft 20A are in a fourth stage size. A moving cylinder lower portion 20D slidably fitted around the outer periphery of the portion 20L and coupled to the moving cylinder upper portion 20B, and a portion fixed to the moving cylinder lower portion 20D and having a fixed shaft 20A passing through the moving cylinder lower portion 20D. A fixed shaft cap 20F to be covered, a lower pressure oil introduction pipe 11 which is housed in the hollow portion of the fixed shaft 20A and has one end fixed to the inner peripheral surface of the hollow portion and the other end fixed to the runner boss 1; Installed in tube 11 End of the car spindle opposite the nut 20
The lower operation transmission pipe 14 fixed to the fixed shaft cap 20F by G, the link mechanism 26 fitted to the outer edge of the moving cylinder upper portion 20B and moving together with the moving cylinder upper portion 20B, and one end of the link mechanism 26. A lever member (not shown) that is pivotally attached to the runner blade 2 and is fixed to the shaft portion of the runner blade 2 at the other end.

The moving cylinder upper part 20B and the moving cylinder lower part 20D connected thereto constitute a piston cylinder 25, which is movable along a fixed axis, and the moving charge is represented by a stroke 27. .

The fixed portion of the lower pressure oil introducing pipe 11 to the runner boss 1 forms an upper flange 11A, and the inner peripheral portion of the upper flange 11A has a spot facing having a diameter larger than the inner diameter of the lower pressure oil introducing pipe 11. A hole 43 is formed. Lower pressure oil introduction pipe 1
An upper flange 14A is formed at an end of the lower operation transmission pipe 14 installed inside the turbine operation shaft side, and a screw portion 33 is formed on an inner peripheral surface of the flange 14A. The upper flange 14A is arranged at a position where the lower operation transmission pipe 14 does not project from the end surface of the runner boss 1 even when the piston cylinder 25 moves to the water turbine main shaft side to the stroke limit.

The water turbine main shaft 4 is a hollow shaft having a center hole 23 on its axis, and an upper pressure oil introducing pipe 10 is provided in the center hole 23, and the upper pressure oil introducing pipe 10 transmits an upper operation. Tube 13
Is decorated. At the end of the upper pressure oil introducing pipe 10 on the movable blade runner side, a boss portion 1 that fits into the inner diameter of the counterbore 43 is formed.
OB is formed and fitted in the counterbore 43. Two O-ring grooves are formed in the boss portion 10B, and O-rings 30 are attached to the boss portions 10B, respectively, so that the upper pressure oil introduction pipe 10 and the lower pressure oil introduction pipe 11 can slide in the axial direction and are oil-tight. It is sealed. A boss portion 13A is formed at an end portion of the upper operation transmission pipe 13 on the movable blade runner side, and a screw portion that is screwed into the screw portion 33 is formed on the boss portion 13A.
It is screwed to. The turbine main shaft 4 is fastened to the runner boss 1 by fastening bolts 9.

An outer pressure oil communication hole 17 is formed in the upper flange 11A of the lower pressure oil introducing pipe 11, and the upper flange 11A
Above and below A (hereinafter, the axial direction of the turbine main shaft is referred to as the vertical direction,
The movable turbine runner side is the lower side with respect to the water turbine main shaft). The upper operation of the upper flange 14A at the upper end of the lower operation transmission pipe 14 restrains the movements of the vertical operation transmission pipes 13 and 14 in the radial direction so that the movement in the vertical direction along the inner surface of the lower pressure oil introduction pipe 11 is smooth. Guide plate 15 is bolt 1
It is fixed at 6. An inner pressure oil communication hole 18 is formed in the upper flange 14A and the guide plate 15 to communicate the upper and lower sides of the upper flange 14A. The space formed by the upper space of the piston 20C, the inner peripheral surface of the hollow portion of the fixed shaft 20A, and the outer peripheral surface of the lower pressure oil introduction pipe 11 is a portion of the portion 20J in which the outer diameter of the fixed shaft 20A is the size of the second stage. The space formed by the space below the piston 20C, the inner peripheral surface of the lower pressure oil introduction pipe 11 and the outer peripheral surface of the lower operation transmission pipe 14 communicates with the communication hole 20M, and the outer diameter of the fixed shaft 20A is the fourth. They are communicated with each other through a communication hole 20N of a portion 20L having a step size.

The movable blade 2 has a shaft portion 2B at the inner diameter side end portion,
The shaft portion 2B is rotatably fitted in a fitting hole radially formed in a portion 20H having an outer diameter of the fixing portion 20A which is the size of the first step, and is also fitted to a cylindrical portion of the runner boss 1. Is also rotatably fitted.

The operation of the movable-blade turbine device having the above structure will be described below. Pressure oil 21 made outside the turbine / generator
a and 21b are the generator shaft center hole 24 and the turbine main shaft center hole 2
3 and runner boss 1 Vertical pressure oil introduction pipe 1 installed inside
The pressures of P1 and P2 are generated in the section separated by the piston 20C inside the piston cylinder 25 through 0 and 11. The piston cylinder 25 moves up and down due to the pressure difference between P1 and P2, and the link mechanism 26 moves up and down. For example, in the state of FIG. 1 and FIG.
Inner peripheral surface of the central hole 23 of the turbine main shaft 4 and the upper pressure oil introduction pipe 10
The pressure oil source of the pressure P1 is communicated with the section between the outer peripheral surfaces of the upper pressure oil introducing pipe 10 and the outer peripheral surface of the upper operation transmission pipe 13 with the pressure P2 (> P1). When the oil source is communicated, the pressure oil of pressure P1 is guided to the section on the outer peripheral side of the lower pressure oil introduction pipe 11 through the outer pressure oil communication hole 17 formed in the upper flange 11A, and further through the communication hole 20M. After that, it flows into the upper section of the piston 20C. Pressure oil of pressure P2 is
Inside pressure oil communication hole 18 formed in the upper flange 14A
Through the inner side of the lower pressure oil introducing pipe 11 and further flows into the lower section of the piston 20C through the communication hole 20N. Since P2> P1, piston cylinder 25
The force acting on is large downward, and the piston cylinder 25 moves downward. Along with this, the link mechanism 26 also moves downward and rotates the runner blade 2 in a predetermined direction around the axis 2A via a lever member (not shown).

Further, in order to control the stroke amount 27 (the rotation amount of the runner blade 2) in the vertical direction of the piston cylinder 25,
The stroke amount 27 is taken out to the outside of the water turbine / generator, which is installed in the vertical pressure oil introduction pipes 10 and 11 and is attached to the fixed shaft cap 20F which moves in synchronization with the stroke amount 27 of the piston cylinder 25. It is performed by the fixed vertical operation transmission pipes 13 and 14.

FIG. 2 shows details of the portion A in FIG. The lower pressure oil introduction pipe 11 is connected to the runner boss 1 by the upper flange 11A.
Are fastened by means of pressure oil introducing pipe fixing bolts 12.
A cylindrical contact portion 42 having the same center as that of the runner boss 1 is provided on the outer peripheral portion of the upper flange 11A of the lower pressure oil introduction pipe 11 so as to be in close contact with the inner peripheral surface of the runner boss 1, and the inner peripheral portion of the flange has the same center as the runner boss 1. A cylindrical counterbore 43 is provided. The boss portion 10B below the upper pressure oil introduction pipe 10 is provided with a cylindrical outer peripheral surface, and the boss portion 10B having this cylindrical outer peripheral surface is fitted into the counterbore hole 43 of the lower pressure oil introduction pipe 11 upper flange 11A. I am fit. Thereby, although the upper pressure oil introduction pipe 10 is fixed in the circumferential direction, it can freely move in the vertical direction with respect to the lower pressure oil introduction pipe 11. The outer peripheral surface of the boss portion 10B and the inner peripheral surface of the counterbore hole 43 form a cylindrical surface, but these surfaces do not rotate relative to each other, so they do not necessarily have to be cylindrical surfaces. However,
Since it slides relatively in the vertical direction, it is preferable that the surface is parallel to the axis of the turbine main shaft.

Lubricating oil supplied to the runner blade operating device 20 is filled inside the vertical operation transmitting pipes 13 and 14, and this lubricating oil and pressure oil on the outer peripheral portions of the vertical operating transmission pipes 13 and 14 are filled. In order to prevent the leakage of the lower operation transmission pipe 14, a counterbore hole at the lower portion of the screw portion 33 of the lower operation transmission pipe 14 is formed, and the lower end surface of the upper operation transmission pipe abuts against the upper surface of the counterbore hole through the packing B32 and is pressed. ing.

In the apparatus having the above structure, when the upper and lower operation transmission pipes 13 and 14 are separated, the screw portion 33 is unscrewed by rotating the upper operation transmission pipe 13 by the internal pressure oil introduction device of the generator, and the remote operation is performed. It is easily decomposed by operation.

FIG. 3 shows a state in which the movable blade runner portion and the turbine main shaft 4 of the embodiment shown in FIG. 1 are separated. The movable blade runner portion and the turbine main shaft 4 are separated by the following procedure. First,
As described above, by screwing the screw portion 33 back by rotating the upper operation transmission pipe 13 in the generator internal pressure oil introduction device portion,
The upper operation transmission pipe 13 and the lower operation transmission pipe 14 are separated. Next, the weight of the movable blade runner portion is received from below by a stand or the like, or is hung by a wire from above, and the upper pressure oil introduction pipe 10 and the upper operation transmission pipe 13 are kept installed in the turbine main shaft 4. , Loosen the fastening bolt 9 and remove it. By moving the movable blade runner portion downward in this state, the boss portion 10B of the upper pressure oil introduction pipe 10 is moved to the upper flange 11A of the lower pressure oil introduction pipe 11.
The upper pressure oil introducing pipe 10 and the lower pressure oil introducing pipe 11 are separated from the counterbore hole 43, and the movable blade runner portion is separated from the water turbine main shaft 4.

FIG. 4 shows a state in which the movable blade runner portion is suspended. As shown in the figure, the movable blade runner can be disassembled independently without disassembling the entire turbine / generator. FIG. 8 shows an example of the disassembly procedure. First, the hanging metal fitting 34 is installed on the outer surface (water contact surface) of the runner boss 1 (step 81), and a plurality of wire through holes 35 for hanging the movable blade runner portion provided on the upper cover 5 main plate of the turbine fixed side are provided. (Step 82, this through hole 35 prevents water leakage by the closing flange during normal operation).

From the inside of the water turbine pit 36, a suspending device 37 is used to pass a suspending wire 38 through a through hole 35 and the suspending metal fitting 34.
The weight of the movable blade runner portion is supported by the suspension device 37 via the suspension wire 38 (procedure 83). On the other hand, in the lower cover 6 which is the facing portion of the runner blade 2, the runner blade 2 has the axis 2
In order to maintain the gap between the blade tip of the runner blade 2 and the lower cover at a predetermined value even when it is rotated around A, it has a spherical surface similar to the outer peripheral surface of the blade tip of the runner blade 2 and has the same axis 2A. Bends in the direction of the center line of the runner boss 1 below. For this reason, when attempting to hang down the movable blade runner portion with the lower cover 6 as it is, the wing tip portion of the runner blade 2 is lowered by the lower cover 6.
Since it interferes with the inner peripheral surface and cannot be hung down, this embodiment has a structure in which the lower cover 6 and the upper suction pipe 8 can be divided into several pieces in advance. The lower cover 6 and the upper suction pipe 8 are disassembled and moved in a direction away from the center of the water turbine so that the outer peripheral surface of the runner blade 2 does not interfere (step 84). Next, the truck rail 40 and the truck 41 are installed above the lower suction pipe 39 (step 85).

As described above, the upper and lower operation transmission pipes 13,
14 is separated (procedure 86), the turbine main shaft 4 and the runner boss 1 are separated.
Loosen and remove the fastening bolts 9 that connect the
7). As a result, all the parts that mechanically connect the turbine main shaft 4 and the movable blade runner part are released. The movable blade runner section is suspended by the suspension device 37 described above (step 8).
8), and the boss portion 10 of the upper pressure oil introduction pipe 10 fitted in the counterbore hole 43 of the upper flange 11A of the lower pressure oil introduction pipe 11.
B is extracted, and the turbine main shaft 4 and the movable blade runner portion are completely separated. After fixing the separated movable blade runner portion on the carriage 41 (procedure 89), the carriage 41 carrying the movable blade runner portion is carried out (procedure 90). After this, disassembly and inspection of the turbine main shaft and generator, and disassembly and inspection of the movable blade runner will proceed in parallel.

If the above reverse procedure is followed, it is possible to assemble the movable blade runner portion regardless of the presence of the generator portion or the turbine main shaft.

As a result, it is possible to disassemble or assemble only the movable blade runner portion, which is frequently repaired, without disassembling other parts such as the water turbine main shaft and the generator.

The runner blades that are most susceptible to damage by pressure water from the upper pond generally need to be repaired every several years, but each time the entire hydroelectric power plant is disassembled and the movable blade runners are taken out, We were doing welding repairs. The entire repair period of the hydroelectric power generation equipment having the movable blade runner required three months, but according to this embodiment, the repair work of the movable blade runner alone can be performed without disassembling the entire hydroelectric power generation equipment. The time required for inspection and repair will be about one month, and the process can be shortened by about two months. The shortening of the process for about two months has the effect of reducing construction costs, securing labor, and enabling the early start-up of power generation facilities in response to power demand. Even during overhaul work in which the entire hydroelectric power generation facility is disassembled and all parts are inspected, it is possible to first disassemble the moving blade runner, which has many inspection items and requires a lot of repair time. Since the work and the disassembly inspection and assembly work of other parts can be performed in parallel, the construction period can be shortened. Further, when a new hydroelectric power generation facility is installed, the runner blade and the runner boss are often cast steel products, and new production of these cast steel products is a component that requires a production period of 1.5 to 2 years. Although it was not possible to undertake the on-site installation work until these parts were completed, according to the present embodiment, the turbine fixed part and the generator side were previously installed,
It is possible to assemble the movable blade runner portion, which requires the most manufacturing time, lastly, which has the effect of shortening the entire installation process.

In the above embodiment, as shown in FIG. 2, the O-ring groove is formed on the outer peripheral portion of the boss portion 10B of the upper pressure oil introduction pipe 10, but the upper flange 11A of the lower pressure oil introduction pipe 11 is formed. An O-ring groove may be formed on the inner peripheral surface of the spot-faced hole, and the O-ring 30 may be attached thereto. Further, the connecting portion between the upper pressure oil introducing pipe 10 and the lower pressure oil introducing pipe 11 may be screwed like the connecting portions between the operation transmitting pipes 13 and 14. In this case, it is preferable that a female screw is formed on the upper portion of the lower pressure oil introduction pipe 11 and a male screw is formed on the lower portion of the upper pressure oil introduction pipe 10.

Furthermore, instead of forming a flange on the lower pressure oil introducing pipe 11 and fixing this flange to the runner boss 1,
A flange is formed on the upper pressure oil introduction pipe 10, and this flange is fixed to the lower end of the water turbine main shaft 4, and a boss portion is formed on the upper end of the lower pressure oil introduction pipe 11 to form the flange of the upper pressure oil introduction pipe 10. You may make it fit in the counterbore hole. However, in this case, the joint cannot be screwed.
Although not shown, in both cases, the hole-side edge and the entry-side tip are tapered to facilitate fitting.

Regarding the connecting portion of the operation transmission pipes 13 and 14, the flange side and the boss side may be interchanged.

Although the above embodiment separates the connecting portion between the turbine main shaft 4 and the movable blade runner portion, even when the connecting portion between the turbine main shaft 4 and the generator shaft 22 is separated, the movable blade runner of the above embodiment is separated. If the structure on the side of the turbine is the structure of the turbine main shaft 4 and the structure on the side of the turbine main shaft 4 of the above embodiment is the structure of the generator shaft 22, the same idea can be applied.

[0039]

According to the present invention, the movable blade runner portion can be disassembled and carried in and carried in and assembled regardless of the assembly and disassembly of the generator and the turbine main shaft, and the movable blade runner portion can be inspected and maintained. It is possible to shorten the time required and the time required to install new power generation equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a movable blade runner according to an embodiment of the present invention.

FIG. 2 is a sectional view showing details of a portion A in FIG.

FIG. 3 is a cross-sectional view showing a state in which the movable blade runner of the embodiment shown in FIG. 1 is separated from the turbine main shaft.

FIG. 4 is an overall cross-sectional view showing a state of an operation of separating the movable blade runner of the embodiment shown in FIG. 1 from the turbine main shaft.

FIG. 5 is a cross-sectional view showing an example of an installed state of a water turbine having a movable blade runner.

FIG. 6 is a cross-sectional view of a conventional movable blade runner.

FIG. 7 is a detailed sectional view (a detailed view of a portion B in FIG. 6) of a pressure oil introducing pipe and an operation transmitting pipe connecting portion of a conventional movable blade runner.

FIG. 8 is a procedure diagram showing an example of a procedure for disassembling the embodiment shown in FIG.

[Explanation of symbols]

1 runner boss 2 runner blade 2A runner blade axis 3 runner cone 4 turbine main shaft 5 upper cover 6 lower cover 7 casing 8 upper suction pipe 9 fastening bolt 10 upper pressure oil introduction pipe 10A upper pressure oil introduction pipe lower flange 10B Upper pressure oil introduction pipe boss portion 11 Lower pressure oil introduction pipe 11A Lower pressure oil introduction pipe upper flange 12 Pressure oil introduction pipe fixing bolt 13 Upper operation transmission pipe 13A Upper operation transmission pipe boss portion 14 Lower operation transmission pipe 14A Lower operation transmission pipe Upper flange 15 Guide plate 16 Operation transmission pipe connecting bolt 17 Outer pressure oil communication hole 18 Inner pressure oil communication hole 19 Bottom ring 20 Runner blade operating device 20A Fixed shaft 20B Moving cylinder upper 20C Piston 20D Moving cylinder lower 20E Nut 20F Fixed shaft cap 20G Nut 20H Outer diameter is the first stage fixed shaft 20J Outer diameter is the second stage Fixed shaft 21a pressure oil of the fixed shaft 20K outer diameter fixed shaft 20L outer diameter of the third stage fourth stage
(Outside) 21b Pressure oil (Inside) 22 Generator shaft 23 Turbine spindle center hole 24 Generator shaft center hole 25 Piston cylinder 26 Link mechanism 27 Cylinder-stroke 30 O-ring 32 Packing B 33 Screw part 34 Hanging metal fitting 35 Through hole 36 Turbine pit 37 Lifting device 38 Wire 39 Lower suction pipe 40 Bogie rail 41 Bogie 42 Cylindrical contact part 43 Counterbore hole

Claims (15)

[Claims] 1. A movable vane turbine runner having a plurality of runner vanes and a turbine main shaft coupled to the movable vane turbine runner, wherein the runner vane is provided inside the movable vane turbine runner and the turbine main shaft. A movable body is equipped with a pressure oil introducing pipe for guiding pressure oil to a runner blade operating device that is rotated around, and an operation transmitting means for transmitting the rotation amount of the runner blade to the outside of the turbine main shaft in the pressure oil introducing pipe. In a wing water turbine device, a connecting portion between an upper pressure oil introduction pipe in the main shaft of the water turbine and a lower pressure oil introduction pipe in the movable wing water turbine runner is structured to be detached by remote control. . 2. The movable-blade turbine runner according to claim 1, wherein a cylindrical surface concentric with the axis of the turbine main shaft is provided below the upper pressure oil introducing pipe provided in the turbine main shaft. A cylindrical surface that is concentric with the axis of the turbine main shaft and that fits with the cylindrical surface is provided in the upper part of the lower pressure oil introduction pipe fixed inside, and both cylinder surfaces are fitted to each other in the axial direction of the turbine main shaft and the upper pressure is applied. A movable vane turbine device, wherein an oil introducing pipe and a lower pressure oil introducing pipe are connected to each other, and a sealing means for sealing between the fitted cylindrical surfaces is provided. 3. The movable vane turbine apparatus according to claim 2, wherein the cylindrical surface of the lower part of the upper pressure oil introducing pipe is formed on the outer peripheral surface of the lower part of the upper pressure oil introducing pipe. A movable-blade turbine device, wherein a cylindrical surface of the upper part of the pipe is an inner peripheral surface of a counterbore hole formed in the upper part of the lower pressure oil introduction pipe. 4. The movable vane turbine apparatus according to claim 2 or 3, wherein the sealing means includes an O-ring groove formed on the cylindrical surface and an O-ring groove mounted on the O-ring groove. A movable wing turbine device characterized in that 5. The movable blade water turbine device according to claim 4, wherein the O-ring groove is provided on a cylindrical surface formed on an outer peripheral surface of a lower portion of the upper pressure oil introduction pipe. Turbine equipment. 6. The movable-blade turbine device according to claim 1, wherein a male screw concentric with an axis of the turbine main shaft is formed on an outer peripheral surface of an upper pressure oil introduction pipe lower portion provided in the turbine main shaft, and is movable. A female screw that is concentric with the axis of the turbine main shaft and that engages with the male screw is formed in the upper portion of the lower pressure oil introduction pipe fixed in the blade turbine runner, and the upper pressure oil introduction pipe and the lower pressure oil introduction pipe are A movable-blade turbine device, which is connected by screwing a male screw and a female screw. 7. The movable blade turbine device according to claim 1, wherein the operation transmitting means transmits the amount of rotation of the runner blade as a mechanical movement amount of the member in the axial direction of the turbine main shaft. The operation transmission pipe includes an upper operation transmission pipe installed in the upper pressure oil introduction pipe and a lower operation transmission pipe installed in the lower pressure oil introduction pipe and screwed to the upper operation transmission pipe. A movable wing turbine device characterized in that 8. A movable-blade turbine runner comprising: a movable-blade turbine runner having a plurality of runner blades; a turbine main shaft coupled to the movable-blade turbine runner; and a generator shaft coupled to the turbine main shaft. , Inside the water turbine main shaft and the generator shaft, a pressure oil introducing pipe for guiding pressure oil to a runner vane operating device for rotating the runner vane around the shaft is installed, and the amount of rotation of the runner vane in the pressure oil introducing pipe. In a movable-blade turbine device equipped with an operation transmitting means for transmitting the water to the outside of the turbine main shaft, a connecting portion between an upper pressure oil introduction pipe in the turbine main shaft and a generator shaft pressure oil introduction pipe in the generator shaft is remotely controlled. A movable-wing turbine device having a structure to be removed by. 9. The movable turbine turbine device according to claim 8, wherein a cylindrical surface concentric with the axis of the turbine shaft is provided at the lower portion of the generator shaft pressure oil introduction pipe provided in the generator shaft. A cylindrical surface that is concentric with the axis of the water turbine main shaft and that fits with the cylindrical surface is provided above the fixed upper pressure oil introduction pipe, and both cylindrical surfaces are fitted to each other in the axial direction of the water turbine main shaft. A movable-blade turbine device, wherein an introducing pipe and an upper pressure oil introducing pipe are connected to each other, and a sealing means for sealing between the fitted cylindrical surfaces is provided. 10. The movable vane turbine apparatus according to claim 9, wherein the cylindrical surface of the lower portion of the generator axial pressure oil introduction pipe is formed on the outer peripheral surface of the lower portion of the generator axial pressure oil introduction pipe. A movable blade turbine device, wherein a cylindrical surface of the upper part of the oil introduction pipe is an inner peripheral surface of a counterbore hole formed in the upper part of the upper pressure oil introduction pipe. 11. The movable blade water turbine device according to claim 9 or 10, wherein the sealing means is an O formed on a cylindrical surface.
A movable-blade turbine device, comprising a ring groove and an O-ring groove mounted in the O-ring groove. 12. The movable wing water turbine device according to claim 11, wherein the O-ring groove is provided on a cylindrical surface formed on an outer peripheral surface of a lower portion of the generator axial pressure oil introduction pipe. Wing turbine equipment. 13. The movable-blade turbine device according to claim 8, wherein a male screw that is concentric with the axis of the turbine shaft is formed on the outer peripheral surface of the generator shaft pressure oil introduction pipe provided inside the generator shaft.
A female screw that is concentric with the axis of the turbine main shaft and that engages with the male screw is formed on the upper pressure oil introduction pipe fixed in the turbine main shaft, and the generator shaft pressure oil introduction pipe and the upper pressure oil introduction pipe are A movable-blade turbine device, which is connected by screwing a male screw and a female screw. 14. The movable blade turbine device according to claim 8, wherein the operation transmitting means transmits the amount of rotation of the runner blade as a mechanical movement amount of the member in the axial direction of the turbine main shaft. A transmission tube, the operating transmission tube comprising:
A movable wing including a generator shaft operation transmission pipe installed in the generator shaft pressure oil introduction pipe and an upper operation transmission pipe installed in the upper pressure oil introduction pipe and screwed to a lower portion of the generator shaft operation transmission pipe. Turbine equipment. 15. A movable-blade turbine runner having a plurality of runner blades, and a turbine main shaft coupled to a runner boss of the movable-blade turbine runner, wherein the movable-blade turbine runner and the turbine main shaft have runner blades therein. A pressure oil introduction pipe that guides pressure oil to the runner blade operation device that rotates around the shaft is installed.
In a method for disassembling and assembling a movable-blade turbine device in which an operation transmission means for transmitting the rotation amount of a runner blade to the outside of the turbine main shaft is installed in the pressure oil introducing pipe, first, the movable oil turbine device is installed in the pressure oil introducing pipe. The connection portion of the portion of the operation transmission means inside the movable vane turbine runner and the portion inside the turbine main shaft is released by remote control, and then the joint between the runner boss of the movable blade turbine runner and the turbine main shaft is released, and the movable blade turbine runner and / or A method for disassembling and assembling a movable-blade turbine, characterized in that the turbine main shafts are moved axially away from each other to release a joint between a portion of the pressure oil introduction pipe inside the movable-blade turbine runner and a portion inside the turbine main shaft. .