JPS6345571Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of the package cage in which the package is stored.
This is an improved structure of the opening through which the irregularly shaped tube passes.

Conventionally, water turbine power generators and the like have often been used as a packaged cage to improve weather resistance against rain and snow, to improve equipment reliability, and to reduce noise.

For example, even in the case of the packaged cross-flow water turbine generator shown in Fig. 1, a cross-flow water turbine 2, a speed increaser 3, and a generator 4 are installed on a pedestal 1, and an air intake device 5, etc., as ancillary equipment for these are installed. The whole is housed in a package cage 6. This package 6 has an irregularly shaped pipe 7 passing through it that guides water to the cross-flow turbine 2, and is also formed with an intake port and an exhaust port 8. It is an opening for On the other hand, the penetration part where the irregularly shaped pipe 7 penetrates the package cage 6 is sealed to prevent insects, rats, etc. from entering through this part, and to prevent rain and snow from entering, as well as to prevent condensation from condensation passing through the irregularly shaped pipe 7. This prevents water droplets from entering the package cage 6.

However, the irregularly shaped tube 7 has a vertical rib 10 along its axial direction and a horizontal rib 19 perpendicular to this for reinforcement.
Since many pipes are installed on the outer wall, the structure is complicated to seal the penetrations, and if there are installation errors such as irregularly shaped pipes, it is necessary to match them on site. There is a problem.

The present invention aims to solve such conventional problems and provide a package structure for a water turbine that is simple in structure and is not affected by installation errors. The configuration of the present invention to achieve such an object is that, in a package in which a water turbine equipped with an irregularly shaped pipe that guides water to the water wheel is housed, an opening through which the irregularly shaped pipe passes is provided on the side of the package, and the opening is provided with an opening through which the irregularly shaped pipe is inserted. The present invention is characterized in that a cover surrounding the cover is provided to protrude outward, and a ventilation cover is formed at the opening inside the cover, and a drainage plate is provided below the ventilation cover.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

2 to 7a and 7b show an embodiment in which the package structure for a water turbine of the present invention is applied to a cross-flow water turbine. Incidentally, the same parts as those in the prior art are given the same numbers, and redundant explanations will be omitted.

A box-shaped package 6 is flange-bonded to the periphery of the pedestal 1 and fixed with bolts so as to surround the cross-flow water turbine 2 and other speed increasers and generators (not shown) installed on the pedestal 1. The side wall of this package 6 has an opening 11 through which the irregularly shaped pipe 7 for guiding water to the cross flow water turbine 2 passes, which is larger than the outer diameter of the irregularly shaped pipe 7 and has a sufficient size.

Bolt holes are drilled around the opening 11 at appropriate intervals. Furthermore, a cover 12 surrounding the irregularly shaped tube 7 is attached around the opening 11.
The cover 12 is provided so as to protrude outward from the side wall of the package cage 6, and is bolted to the package cage 6 via a flange provided at its base end. An example of how to attach the cover 12 is to cover the irregular-shaped tube 7 with an upper cover having a U-shaped cross section from above so as to surround the irregular-shaped tube 7, bolt it to the package cage 6, and attach a lower cover that is connected to the upper cover and closes the bottom. It is preferable to fix it to the package cage 6 with bolts or the like. A gap g is maintained between the cover 12 and the irregularly shaped tube 7 through which outside air flows. The gap g should be large enough to prevent insects, mice, etc. from entering, and generally
Just set it to 12.5mm or less.

Furthermore, a ventilation cover 1 made of wire mesh or punched metal is provided inside the base end of the installation side of the cover 12 to prevent insects, mice, etc. from entering and allow only air to flow in.
3 is formed to surround the irregularly shaped tube 7. The ventilation lid 13 includes a border frame 15a bolted to the peripheral edge of the opening 11, as shown in FIG.
It is formed of a wire mesh or the like 15b pasted on the inner periphery of the edging frame 15a, and a edging 15c provided on the inner periphery of the wire mesh or the like 15b.

Further, a drainage plate 15d is attached to the ventilation lid 13 at a position below the irregularly shaped pipe 7. The drainage plate 15d is inclined downward from the inside of the package toward the opening 11 in order to drain water droplets condensed on the outer wall of the irregularly shaped pipe 7 to the outside of the package 6, and its tip 15e protrudes into the cover 12 outside the package 6. Further, a side plate 15f is provided at the side end, and a reinforcing member 15g is provided below the side plate 15f.

Note that the ventilation lid 13 is preferably formed by being divided into two parts, upper and lower.

Next, another example of the ventilation lid 13 is shown in FIG. As shown in the figure, the side plate 15f provided at the side end of the drain plate 15d has a triangular shape and is formed wider toward the wire mesh 15b.
4 is also set higher than that in FIG.

In this embodiment, the side plate 15f also serves as a reinforcing material for the drain plate 15d, and the air flowing in through the wire mesh etc. 15b flows further along the deformed pipe 7, which has the advantage of improving the dehumidification effect described later.

Note that the ventilation lid 13 according to these embodiments has upper and lower parts.
Although the explanation has been made regarding a split type, it is not limited to a type that is divided into two parts, and may be formed integrally. In the case of the integrally formed ventilation lid 13, the ventilation lid 13 may be inserted into the irregularly shaped pipe 7 in advance before installing the water turbine, and the ventilation lid 13 may be fixed after the package 6 is attached.

Furthermore, other examples of the ventilation lid 13 are shown in FIGS. 7a and 7b. The embodiment shown in the figure facilitates adjustment of the mounting position of the wire mesh etc. 15b, and the border frame 1
5a and the wire mesh etc. 15b are formed separately.
A drainage plate 15d is attached to the edging frame 15a, and a edging 15c is provided to the wire mesh 15b. In order to fix these to the package cage 6, as shown in FIG.
The outer periphery of the wire mesh 15b is bordered by a frame 1.
5a, and tighten and fix it to the package cage 6 with bolts 15h.

According to the configuration of the present invention described above, even if there is some positional deviation between the irregularly shaped pipe 7 and the opening 11 of the package 6 when the crossflow turbine 2 is installed and the irregularly shaped pipe 7 is connected, the opening 11 Since the opening is larger than the outer diameter of the irregularly shaped pipe 7 by a predetermined gap or more, this positional shift can be absorbed, and workability during installation is extremely good. Additionally, air is sucked into the package 6 from the gap between the cover 12 and the irregularly shaped tube 7 as shown by the arrow in FIG. Deformed tube 7
Since the air is cooled by the water flowing inside and condenses on the irregularly shaped tube 7, dehumidified dry air is obtained. Since this dry air can cool the generator and internal equipment inside the package, it is possible to prevent the deterioration of the insulation and the occurrence of rust, thereby increasing the durability and reliability of the equipment. Incidentally, condensed water is smoothly drained by the drain plate. Next, the suction air is cooled by the irregularly shaped tube 7, so that the cooled dry air flows into the inside of the package, increasing the cooling effect.

Furthermore, since there is no need to provide an intake device inside the package as in the conventional case, a wide opening space for inspection can be secured and maintenance can be facilitated. In addition, there are few restrictions on the intake area and it can be set wide, so intake loss can be reduced, and the wind speed is slow, so noise can be reduced. Since the air intake port is located in the part that protrudes from the package, the air flow is good and there are no stagnation areas, so ventilation is improved, especially in the actuator part, and the cooling effect can be improved.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of a conventional package type cross-flow water turbine generator, Figs. 2 to 7a,
b relates to an embodiment of the present invention, FIG. 2 is a schematic sectional view thereof, FIG. 3 is a partial schematic sectional view of the opening, FIG. 4 a is an external view of the ventilation lid, and FIG. 5 is an external view of a ventilation lid according to another embodiment, FIG. 6 is a partial external view of a ventilation lid, and FIG. 7a is an explanatory diagram of a ventilation lid according to another embodiment. Figure b is an explanatory diagram of its installation. In the drawing, 1 is the frame, 2 is the water turbine, 3 is the speed increaser, 4
is a generator, 5 is an intake device, 6 is a package, 7 is an irregularly shaped pipe, 9 is a horizontal rib, 10 is a vertical rib, 11 is an opening, 12 is a cover, 13 is a ventilation lid, 14 is a division position, 15a is a border Frame, 15b is wire mesh, etc., 1
5c is the edging, 15d is the drainage plate, 15e is the tip,
15f is a side plate, 15g is a reinforcing plate, and 15h is a bolt.

Claims (1)

[Scope of utility model registration request] In a package that houses a water turbine equipped with an irregularly shaped pipe that leads water to the waterwheel, an opening through which the irregularly shaped pipe passes is provided on the side of the package, and a cover that surrounds the irregularly shaped pipe is provided in the opening and extends outward. . A package structure for a water turbine, further comprising: a ventilation lid provided at the opening inside the cover; and a drainage plate provided below the ventilation lid.