JPS5992739A - Rotor lifting device for vertical shaft type rotary electric machine - Google Patents

Abstract

PURPOSE:To enable to shorten the inspecting period of a vertical shaft type rotary electric machine by lifting a rotor of the machine to a height capable of inspecting it without disassembling the rotor. CONSTITUTION:A water wheel upper cover 6 is raised to a height which does not disturb the rise of a water wheel runner 5 and fixed perior to the inspection of thrust bearings 9 and the runner 5,and guide bearings are disassembled, and shaft supports 15, 16 are mounted. A lifting element of a lifting device 12 which is arranged on a lower bracket 8 under a rotor 1 is driven by a hydraulic mechanism or the like, a rotor 10 is lifted to the upper limit of the lifting element, and a supporting piece 13 is placed on the device 12. Then, the lifting element is disposed at the lower limit, and a control piece is placed on the element. Thrust bearings 9, the runner 5 of the rotor 10 are lifted to the height capable of inspecting them by repeatedly performing the above-described operation several times. The bearings 9 and the runner 5 are inspected in this state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a device for pushing up the rotating part of a vertical shaft type rotating electric machine such as a water turbine generator in order to fully inspect the thrust bearing or water wheel/runner of the vertical shaft type rotating electric machine! f.

In general, a water turbine generator has the structure shown in Figure 1. In the figure, (!) is the rotor of the water turbine generator, and the lower shaft (!) is the rotor of the water turbine generator.
2) It has +31 trays on the lower side. (4) is the same trochanter (1)
The lower shaft i31 is a water wheel shaft directly connected to K, and a water wheel runner (6) is connected to the lower end. (61 is the water wheel upper cover, (7) is the upper bracket), +81i is the lower bracket, (9 is
) The rotating part 1101 is equipped on the lower bracket (8) and consists of a rotor fl+, a water wheel shaft (4), and a water type launch (5).
Fully supporting thrust bearing (Ill is the lower bracket (81)
It is a support device provided on the top of the rotor, and supports the rotor (11) in place of the first thrust receiver T91.

Inspection test 1a] will be briefly explained. Without unscrewing, remove the upper bracket t7+ k molecule 'l' 4, disassemble the upper shaft (2), rotor +11 and lower shaft (3), and remove the upper shaft (η11+).
21 and the rotor (11).
3) and the water wheel shaft (4).

This 1. F, I may be disassembled in advance. Then, lift out the lower shaft (3) with the lower bracket (8) to the full thrust shaft (9), disassemble it, and inspect the thrust bearing (91). In this state, either fully inspect the thrust bearing (9) or lower bracket (8).
) and then inspect the thrust bearing (f month?).Next, lift out the water wheel shaft (4) and water wheel launch (5) and inspect the entire water wheel runner (5).

However, in the conventional type described above, the thrust bearing (9)
To inspect everything, check the upper bracket (7), upper shaft (2), rotor tl+, lower shaft (3), and lower bracket if necessary) 1
81k It is necessary to disassemble it and hang it out. In addition, in order to fully inspect the water turbine launcher (5), it is necessary to further disassemble and hang out the water wheel shaft (4) and water wheel runner (51), that is, the rotating part (+01 'i).

Also, assembly after inspection requires the same work as installation. Therefore, the inspection period is long, and the labor and expense involved are extremely large.

This invention was made in view of the above-mentioned drawbacks of the conventional ones, and by raising the rotating part of the rotating electric machine to a height that can be inspected without disassembling the entire rotating part, it is possible to shorten the inspection period. Labor, expenses? The object of the present invention is to provide a device for pushing up the rotating part of a vertical shaft type rotating electrical machine that can significantly reduce the amount of pressure.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In each of these figures, +11 or lO
) is similar to the configuration of the conventional water turbine generator described above. O
This is a push-up device having a plurality of push-up bodies (12a) f which are disposed on the lower bracket (8) below the rotor +11 and move up and down, and the movement of the push-up bodies (12a) causes the rotor +11'i, That is, the rotating part (101 is a thrust bearing (9),
The water wheel launch (6) is pushed up, and the push-up body (12a) is driven by a hydraulic mechanism (not shown) or the like. When the push-up body (12a) is located at the upper limit at a3, the push-up device q';
Q41 is an adjustment piece that is placed on the push-up body (12a) when the push-up body (1za) is at the lower limit after the support piece 03 is placed on the push-up device mouth. , a9
When inspecting the QGI-m thrust bearing (9) and the water turbine runner (5), the support fittings 9 and the rotating part (lO(
It can prevent the axis from tilting as it rises, and it also serves as a guide for a smooth rise.

Next, the operation will be explained. First, before inspecting the thrust bearing (9) and the water turbine runner (5), raise and fix the water turbine upper cover (6: all water turbine runners (5) to a height that does not hinder the rise of the water turbine runner (5), and also secure the guide bearing part. Disassemble and support shaft d9.
α(il'i can be picked up. After that, the push-up body (tza) of the push-up device @ disposed on the lower bracket (8) below the rotor 11 k is driven by a hydraulic mechanism etc. 11J, Push up the rotating part +101 to the upper limit of the suppressor (1za),
Place the support piece (13i) on the push-up device QZ. After that,
Oshiage body (12a) '! Adjustment piece 04) is placed on the push-up body (12a) at the lower limit of r. By repeating the above operation, the rotating part 1101'i thrust bearing (9) and water wheel launch (5) are pushed up to a height where they can be inspected. (5) Inspect everything.In this way, in the past, it was necessary to disassemble the rotating part 1101f and hang it out, but in the present invention, there is no need to completely disassemble the rotating part 101, so assemble it after inspection. This can be easily done without requiring the same work as during installation.

In the above embodiment, the lifting device a'zrvc moves the rotor 1] of the rotating part (10), the water wheel shaft; 4), and the water wheel runner (
5), but the thrust bearing (9)
When fully inspecting only the lower shaft (31 and water-'M
Connection of t41? Release the rotor (1) of the rotating part 1101
It is also possible to use a pusher device tua to lower the pusher.

As explained above, in this invention, after the rotating part of the vertical shaft type rotating electrical machine is pushed up to the upper limit of the push-up body of the push-up device and the support piece is placed on the push-up device, the support piece is positioned at the lower limit of the push-up body sound and the push-up body is pushed up. Since the adjustment piece is placed on the body and the push-up body is moved all the way up, it is possible to push up the vertical weight 1 il type rotating electrical machine to a height where it can be inspected without disassembling all the rotating parts, reducing the inspection time. This has the effect of shortening the process and significantly reducing labor and costs.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a conventional water turbine generator, and FIGS. In Figure 1, Il+ is the rotor, (10) is the rotating part, and a
2 is a push-up device, (12a) is a push-L body, 03 is a support piece,
04 is the adjustment piece. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Kuzuno Ijf- Figure 1 Figure 2

Claims (1)

[Claims] a push-up device that has a push-up body that moves up and down, and pushes up a rotating part of a vertical shaft type rotating electrical machine by moving the push-up body upward; and an adjustment piece that is placed on the push-up body when the push plate body is located at the lower limit after the support piece is placed on the push-up device. This is a device for pushing up the rotating part of a vertical tuyere-type rotating electrical machine.