JPH0681760A - Method of assembling or disassembling turbine generator - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a hydraulic turbine generator capable of significantly shortening the assembly or disassembly time by freely assembling a hydraulic machine without being restricted by the generator. It is to provide an assembling method. According to a method of assembling a turbine generator of the present invention, an upper cover is arranged in a pit, a rotating electric machine and a turbine runner are attached to the upper cover, and a lower cover having a plurality of guide vanes and an operating unit is moved up and down. It is to move to the upper cover side by means and arrange the guide vanes and the water turbine runner between both covers. [Effect] As a result, the turbine side can be freely installed without being restricted by the installation of the generator, and the assembly or disassembly time can be greatly shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling or disassembling a water turbine power generator in which an operating device for operating guide vanes is arranged below a lower cover.

[0002]

2. Description of the Related Art Conventionally, a turbine power generator is disclosed in Japanese Patent Laid-Open No.
As in the publication, a vertical hole pit and a suction pipe are arranged on the lower side of the pit, a casing and a speed ring are arranged around the upper side of the pit, and an upper cover and a lower cover are arranged on the pit between the speed rings. A water turbine runner chamber and a water passage are formed between the covers, a main bearing is provided on the upper cover, a rotating electric machine is arranged on the upper cover, a water turbine runner and guide vanes are arranged in the water turbine runner chamber and the water passage, and guide vanes are arranged. An operating device for operation was provided on the upper cover.

In this method for assembling a turbine generator, a suction pipe is arranged on the lower side of the pit, a casing and a speed ring are arranged around the upper side of the pit, a lower cover is arranged on the pit between the speed rings, and a lower cover is arranged on the lower cover. The upper cover is placed and integrated to form the water turbine runner chamber and water channel. For this reason, the water turbine runner and the lower stem of the guide vane are inserted into the fitting holes inside and around the lower cover, and the lower cover is moved to the upper cover to be integrated, but the upper stem of the guide vane is fitted to the upper cover. A hole was inserted, and the operating device was attached to the upper stem exposed on the upper cover upper surface side.

The generator is fixed to the pit liner mounted on the upper surface of the pit, and the main shaft of the generator penetrating the upper cover is connected to the water turbine runner to complete the assembly of the hydraulic generator.

In this case, since the generator is arranged on the upper side of the operating unit, the water turbine runner and the guide vanes should be mounted between the covers and the operating unit should be mounted on the upper cover upper surface side before mounting the generator. Unable to assemble the generator.

[0006]

As a result, in terms of the method of assembling the hydraulic machine, the hydraulic machine must be assembled before the generator, and the assembly time is extremely limited. Further, the generator, the water turbine runner, the guide vanes, and the operating unit cannot be assembled and installed at the same time, which requires a lot of work time especially when disassembling the hydraulic machine.

An object of the present invention is to freely assemble or disassemble a hydraulic machine without being restricted by a generator,
It is an object of the present invention to provide a method for assembling a water turbine power generator that significantly reduces working time.

[0008]

SUMMARY OF THE INVENTION A method of assembling a turbine generator according to the present invention is a turbine generator including a turbine and a generator that are vertically coupled in a pit in the height direction. A cover is arranged, a rotating electric machine and a water turbine runner are attached to the upper cover, and the lower cover having a plurality of guide blades and an operating device is moved to the upper cover side by the elevating means, and the guide blade and the water turbine runner are placed between both covers. Is to place.

[0009]

As a result, if the main shaft of the rotating electric machine such as a generator is inserted into the main bearing of the upper cover, the guide vanes are placed on the upper surface of the lower cover with the water turbine runner connected to the main shaft at any time. Since the cover can be moved to the upper cover and the guide vanes can be placed between both covers, and the operating unit connected to the guide vanes can be placed under the lower cover, the turbine side can be installed without being restricted by the installation of the generator. I was able to do the installation work freely. When disassembling, the lower cover side can be removed from the upper cover, and then the generator, turbine runner, and guide vanes can be removed at the same time, so the disassembling time can be greatly reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
The method for assembling the water turbine generator 1 shown in FIG.

FIG. 1 is a completed view of the turbine generator 1. The main component of the turbine generator 1 is a generator machine 2 and a hydraulic machine 3, which are arranged in a pit and assembled as follows. . A method of assembling the water turbine generator 1 will be described with reference to FIGS. 2 to 9.

The water turbine transporting pit 4A shown in FIG. 2 is vertically dug below the floor surface, and the lower suction pipe 5 is located below the pit 4A.
Is attached. With the casing 6 placed on a work table (not shown) that extends upward and is installed on the work surface 4B of the water turbine transport pit 4A, the casing 6 is solidified with concrete, as shown in FIGS.
The partition 7 of is made.

A generator storage pit 4C and a water turbine transportation pit 4A are formed inside and outside via a partition wall 7. The upper passage 8 and the lower passage 9 formed on the left side of the partition wall communicate with the casing 6 and the water turbine transport pit 4A. Partition 7
Fixes the casing 6 for guiding the pressurized water guided from the penstock, and attaches the speed ring 10 to the casing 6. FIG. 4 shows the step 1, and the speed ring 1
The upper cover 11 that covers the generator storage pit 4C is attached between 0 (step 1). The upper cover 11 is provided with a main bearing 12 and an upper bearing 13A.

5 to 6 show the step 2.
The electric generator 2 is the rotor 1 inserted in the stator 14A as shown in FIG.
4B and the main shaft 14C. The upper side and the lower side of the main shaft 14C are inserted into a thrust bearing 15 and a radial bearing 16. The thrust bearing 15 is attached to the main shaft 14C,
It is supported by the upper cover 11. The radial bearing 16 has the main shaft 14C inserted therein and is supported by a support seat 17. The support seat 17 is supported by the partition wall 7.

The hydraulic machine 3 comprises a turbine runner 20 and a plurality of guide vanes 21 radially arranged on the outer periphery of the turbine runner 20. When the turbine runner 20 is connected to the main shaft 14C, the piston 23 and the mounting table 24 are moved up and down in the arrow directions 1Y and 2Y by the servomotor 22 attached to the work surface 4B as shown in FIG. The water turbine runner 20 fixed to the mounting table 24 drives the servomotor 22 to move in the arrow direction 1Y, and is connected and fixed to the main shaft 14C.

Next, the servo motor 22 is driven to lower the mounting table 24 in the arrow direction 2Y and move it to the work surface 4B in FIG. The trolley | bogie 25 shown in FIG.7 and FIG.1 arrange | positioned at the work surface 4B mounts the lower cover 26 on this. 1 and 7
8 and FIG. 8 are views for explaining step 4. Lower cover 26
A water circulation hole 27 and a lower bearing 13B are formed on the inside and outside. A plurality of lower bearings 13B are formed at predetermined intervals along the outer peripheral direction of the water circulation hole 27, and the lower bearings 13B are the upper bearings 1B.
It is arranged corresponding to 3A. An upper stem 21A and a lower stem 21B are provided on the upper side and the lower side of the guide blade 21, respectively. The lower stem 21B is inserted into the lower bearing 13B.

In this state, the lower cover having the guide vanes 21 arranged as shown in FIG. 1 is placed on the mounting table 24, and the mounting table 24 drives the servomotor 22 to move in the arrow direction 1Y, that is, in the upper cover direction. Move the lower stem 17B to the upper bearing 13
Then, the lower cover 26 is brought into contact with the speed ring 10 and is tightened and fixed by a fastening means to form a water channel and a runner chamber between both covers. As shown in FIG. 8, a guide vane 21 is arranged in the water channel, and a water turbine runner 20 is arranged in the runner chamber. The lower stem 21B protruding downward from the lower cover 26 is connected to the operating mechanism 28. In addition, the lower side of pit 2 is shown in FIG.
The lower suction pipe 29 is attached as described above to complete the turbine generator 1.

As described above, according to the method of assembling the water turbine generator 1 of the present invention, the following operational effects can be achieved.

In the present invention, an upper cover 11 for covering the pit 4C is attached between the left and right speed rings 10,
If the main shaft 14C of the rotating electric machine, for example, the generator 2 is inserted into the main bearing 12 of the upper cover 11, the water turbine runner 20 is always available.
Is connected to the main shaft 14C, the guide blade 21 is placed on the upper surface of the lower cover, the lower cover 26 is driven by the servomotor 22 to move to the upper cover side, and the guide blade 21 is arranged between both covers. Since the operating device 28 connected to the guide vanes 21 can be arranged on the lower side of the lower cover, the turbine side can be freely installed without being restricted by the installation of the generator 2. Therefore, as is clear from the installation process shown in FIG. 13, the installation time of the present invention can be significantly shortened by about 7 months as compared with the conventional installation time. The main shaft of the generator 2 may be connected to the turbine runner after the turbine runner is supported by the lifting device.

When disassembling, the lower cover 26 side is placed on the upper cover 1
Since the generator 2, the water turbine runner 20, and the guide vanes 21 can be removed at the same time after removing them from 1, the disassembling time can be greatly shortened.

In the embodiment shown in FIGS. 9 and 10, the plurality of guide vanes 21 are made to stand on the lower cover. That is, the lower stem 2 is attached to the plurality of lower bearings 13B of the lower cover 26.
Insert 1B. In order to make the plurality of guide blades 21 self-support on the lower cover, the inner template piece 30A and the outer template piece 30B are arranged for each of the plurality of guide blades 21.

The upper stem 21 is provided at the corresponding end where the inner template piece 30A and the outer template piece 30B correspond.
A semicircular semicircular portion 30C into which A is inserted is formed.
When the pair of semi-circular portions 30C are combined, a circular shape that can accommodate the upper stem 21A is formed. A flange 30D extending upward is formed on the corresponding surface of the inner template piece 30A and the outer template piece 30B corresponding to the semicircular portion 30C.
Therefore, the inner template piece 30A and the outer template piece 30B are brought into contact with each other and tightened by the tightening means 30E provided on the flange 30D, and the upper stem 21A is attached to the semicircular portion 30C.
Can be self-supported without falling over the plurality of guide vanes 21.

A wire 31 hung at a plurality of locations on a lower cover 26 having a plurality of guide vanes 21 that are self-supporting by a template 30 is inserted into a main bearing of the upper cover 11 and the wire 31 is raised to lower the lower cover 26. Is moved toward the upper cover, the upper stem 20A is inserted into the upper bearing 13A, the upper cover 11 is brought into contact with the speed ring 10, and is fastened by fastening means such as bolts to fix the guide blade 2 between both covers.
1 and a water turbine runner 20 are arranged. Guide blade 21
After disposing between the covers, the template 30 is disassembled and removed. In this way, the guide blade 21 is prevented from falling down by the template 30 during the movement, so that the movement work is facilitated.

FIG. 11 shows the upper stem 21A of the guide vane 21.
A vertical groove 33 is provided on the lower cover 26, the wire 31 is lifted to move the lower cover 26 toward the upper cover, and the upper stem 20A is inserted into the upper bearing 13A. Since the vertical groove 33 inserted into the guide pin 34 provided on the upper guide 21A is guided, the work of inserting the upper stem 21A into the upper bearing 13A is facilitated.

[0025]

As described above, according to the method for assembling the turbine power generator of the present invention, by disposing the operating mechanism on the lower side of the lower cover, after the generator is installed on the upper cover provided between the speed rings, the power generation is performed. After connecting the turbine runner to the main shaft of the machine, the lower cover can be fixed to the upper cover while the guide vanes are self-supporting, so that the turbine side can be freely assembled before installing the generator. Therefore, the installation time of the present invention can be significantly shortened by about 7 months as compared with the conventional installation time.

Further, when disassembling the turbine generator, if the operating mechanism is removed from the lower cover and the lower cover is removed from the speed ring, the generator, turbine runner and guide vanes fixed to the upper cover can be removed at the same time. Compared with the prior art in which these are removed separately, the disassembly work time can be shortened significantly.

[Brief description of drawings]

FIG. 1 is an exploded view of a water turbine power generator shown as an embodiment of the present invention.

FIG. 2 is a side sectional view of the water turbine transportation pit used in FIG.

FIG. 3 is a side sectional view of the vicinity of a water turbine transportation pit in which the casing is attached to FIG. 2.

FIG. 4 is a side sectional view near the pit in which the generator storage pit is formed in FIG.

FIG. 5 is a side sectional view of a generator facility when the generator is incorporated in FIG.

FIG. 6 is a side sectional view of the turbine generator equipment when the turbine runner is incorporated in FIG.

FIG. 7 is a side cross-sectional view in which a lower cover is placed on the carriage used in FIG.

FIG. 8 is a side sectional view when the hydraulic machine is incorporated in FIG.

FIG. 9 is a side sectional view of the turbine generator equipment when the lower suction gap is incorporated in FIG. 8.

FIG. 10 is a partially exploded view of a water turbine generator shown as another embodiment of the present invention.

11 is a partial plan view of the template used to secure the guide vane of FIG.

FIG. 12 is a partially exploded view of a water turbine power generator shown as another embodiment of the present invention.

FIG. 13 is a process diagram showing the assembly of the water turbine generator shown as the embodiment of the present invention.

[Explanation of symbols]

2 ... Electric generator, 4A, 4C ... Pit, 11 ... Top cover,
20 ... Water turbine runner, 21 ... Guide vanes, 26 ... Cover, 2
8 ... Operation machine.

Claims (9)

[Claims] 1. A turbine generator comprising a turbine and a generator coupled in a vertical pit in a height pit, wherein a turbine casing and a speed ring are installed in the middle of the pit, and an upper cover is provided on the top of the speed ring. A method for assembling a water turbine generator, characterized in that the turbine is installed, and then the generator is attached from above the upper cover and the turbine is attached from below the upper cover. 2. A water turbine casing and a speed ring are installed in the middle of the pit, an upper cover is provided on the upper portion of the speed ring, and then a generator is installed from above the upper cover and a turbine is installed from below the upper cover at the same time. The method for assembling the turbine power generator according to claim 1. 3. A water turbine and a generator are provided at an intermediate position in the height direction of the pit, and work spaces are provided at a lower portion of the water turbine and an upper portion of the generator, respectively.
The method for assembling a turbine power generator according to claim 1, wherein the turbine is assembled from the lower space and the generator is assembled from the upper space. 4. A water turbine and a generator are provided at an intermediate position in the pit height direction, and working spaces are provided at a lower portion of the water turbine and an upper portion of the generator, respectively.
2. The method for assembling a turbine power generator according to claim 1, wherein the assembling work of the water turbine from the lower space and the assembling work of the generator from the upper space are performed at the same time. 5. A turbine generator comprising a turbine and a generator, which are vertically coupled in a pit in the height direction, wherein the turbine and the generator are provided at an intermediate position in the pit height direction and the turbine lower part and the generator. A method for disassembling a turbine power generator, characterized in that a work space is provided in each of the upper portions, the turbine is disassembled into the lower space, and the generator is disassembled into the upper space. 6. A water turbine and a generator are provided at an intermediate position in the height direction of the pit, and working spaces are provided below the water turbine and above the generator, respectively.
The method for disassembling a water turbine generator according to claim 5, wherein the disassembling work of the water turbine into the lower space and the disassembling work of the generator into the upper space are performed at the same time. 7. A water turbine power generator comprising a water turbine and a generator connected in a vertical pit in a height direction pit, a first step of disposing an upper cover in the pit, and a rotating electric machine and a water turbine on the upper cover. A second step of attaching the runner, and a third step of attaching the plurality of guide vanes and the operating device to the lower cover,
A method for assembling a water turbine power generator, comprising the fourth step of moving the lower cover to the upper cover side by the elevating means and disposing the guide vanes and the water turbine runner between both covers. 8. A turbine generator in which a lower turbine and an upper generator are connected in a vertical axis and installed in a pit in a height direction, wherein an upper cover is arranged in the pit and a rotating electric machine is provided on the upper cover. And a turbine runner are installed, a plurality of guide vanes are radially arranged on the lower cover, the upper part of the guide vanes is fixed with a template, the lower cover is moved to the upper cover side by the elevating means, and the guide vanes and the water turbine are placed between the covers. A method for assembling a turbine generator, which comprises disposing a runner. 9. A turbine generator in which a lower turbine and an upper generator are connected in a vertical axis and installed in a pit in a height direction, wherein an upper cover is arranged in the pit and a rotating electric machine is provided in the upper cover. And a water turbine runner are attached to the guide pin provided on the upper cover when the lower cover, on which a plurality of guide vanes radially arranged and having vertical grooves on the upper part are placed, is moved to the upper cover side by the elevating means. A method for assembling a water turbine power generator, comprising moving by inserting a groove.