JPH0287955A - Assembling method in inspection shaft of electric rotary machine - Google Patents

Abstract

PURPOSE:To eliminate work in the limited space in an inspection shaft by blocking buses, piping and the like then assembling then at the outside of the inspection shaft and arranging the joints of respective blocks in the vicinity od the opposite ends of the inspection shaft. CONSTITUTION:A bus 1 and a piping 7 are secured to a base fixing seat 8 in an inspection shaft 2. The bus 1 and a bus base 4 are blocked and suspended in the inspection shaft 2. Joint 2 is made at the outside of the inspection shaft 2 when assembling work is carried out. Then they are suspended in the inspection shaft 2 and secured to the base fixing seat 8 thereafter jointed at the opposite end joints A of the inspection shaft 2. The piping 7 is assembled similarly. By such arrangement, work in the inspection shaft can be eliminated while the possibility of falling of parts can be eliminated and the shift of assembling work position can be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an assembly within an inspection shaft of a rotating electric machine, and in particular,
It relates to a structure suitable for assembling busbars, piping, etc.

[Conventional technology]

In the conventional structure, as described in Japanese Utility Model Application Publication No. 60-181153, the bus bar, piping, protective wire mesh, etc. are arranged inside the inspection shaft, but these parts were brought into the inspection shaft and assembled. .

[Problem to be solved by the invention]

The above conventional technology does not take into account the following items.

(1) Due to the large capacity ratio of the valve water turbine generator, the bus bar, piping, etc. inside the inspection shaft are large, but the inspection shaft itself has problems such as water pressure, so in order to keep it from increasing in size as much as possible, the work space is necessary. As the diameter becomes smaller, it becomes difficult or impossible to work inside the inspection shaft.

(2) Each part such as the bus bar and piping becomes heavier due to the larger size, but if these parts are divided and made lighter, the number of each part increases,
Assembling work within the inspection shaft increases, and the risk of parts falling increases accordingly.

(3) As the capacity increases, the inspection shaft becomes longer and the parts themselves have more connecting parts, making it necessary to move the assembly position more frequently.

The aim of the invention is to minimize these drawbacks.

[Means to solve the problem]

In order to achieve the above objectives, the following items will be carried out.

(1) By dividing busbars, piping, etc. into blocks for each configuration, and providing connection parts for each block near both ends of the assembly 1 inspection shaft outside the inspection shaft, work in the small space inside the inspection shaft can be eliminated.

(2) If a connection part is required for each part in the middle of the inspection shaft, do it during assembly outside the inspection shaft.

This makes it possible to omit the assembly work within the inspection shaft, thereby reducing the likelihood of the assembled parts falling.

(3) By attaching the mount mounting seat of the busbar mount and the connecting portion of the busbar to both ends of the inspection shaft, movement of the assembly work position within the inspection shaft can be reduced.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, a bus bar 1, piping, etc. 7 are fixed to the inspection shaft by a frame mounting seat 8 inside the inspection shaft 2. Second
The figure shows a state in which the busbar 1 and the busbar mount 4 are made into blocks and suspended within the inspection shaft 2, and the connecting portion B is connected outside the inspection shaft 2 during assembly. After suspending this into the inspection shaft 2 and fixing it to the pedestal mounting seat 8, it is connected at the connecting portions A at both ends of the inspection shirt 1-2. The same assembly method is used for piping, etc.

FIG. 3 shows a state in which the bus bar, piping, etc. are assembled inside the inspection shaft 2. FIG. 4 shows an overall sectional view of the valve generator, and the same working method can be used when passing it through the inspection shaft 2 on the upstream side.

According to this embodiment, there is no need to work in a small space inside the inspection shirt 1 to 2, the number of parts to be assembled is reduced, and the danger of parts falling is eliminated. Less movement during assembly work.

In addition, in the figure, 3 is a reinforcing plate, 5 is a duct, 6 is a protective wire mesh, 1
0 is the water wheel room.

〔Effect of the invention〕

According to the present invention, (1) Since the pedestal mount and the connecting portion at the end of the inspection shaft can be assembled from both ends of the inspection shaft, that is, from the protective cover side and the water turbine side, there is no need to work inside the inspection shaft.

(2) Since the assembly inside the inspection shaft is completed outside the inspection shaft, there is no need to assemble parts, and the risk of parts falling during assembly can be eliminated.

(3) Since there is no need to assemble inside the inspection shaft, the only scaffolding needed for assembly work during assembly is at both ends of the inspection shaft, reducing movement during assembly.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of an inspection shaft portion according to an embodiment of the present invention, Fig. 2 is a side view of the bus bar and bus bar mount assembled outside the inspection shaft and before hanging it into the inspection shirt 1. 3 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 4 is a cross-sectional view of the valve water turbine generator. 1... Bus bar, 2... Inspection shaft, 3... Reinforcement plate, mount for 4 bus bars, 5... Duct, 6... Protective wire mesh,
7... Piping, 8... Frame mounting stand, 9... Upstream inspection shaft, 10... Water turbine room.ゞguξノ′ th! #3 Ward inspection chart

Claims (1)

[Scope of Claims] 1. In the inspection shaft of a valve water turbine generator, a bus bar, a mount for the bus bar, a mounting seat for the mount, piping, a mount for the piping,
In assembling parts consisting of a piping mounting seat, a protective wire mesh, etc., assembling the bus bar and the bus bar mount, the piping and the piping mount as each block outside the inspection shaft,
A method for assembling an inspection shaft of a rotating electric machine, characterized in that the assembled product is suspended into the inspection shaft and assembled from both ends of the inspection shaft to each of the mount mounting seats in the inspection shaft.