JPS6179869A - Submersion depth adjustment device for front end wall of air chamber for coastal fixed wave power generation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for adjusting the submersion depth of a front end wall in an air chamber for fixed coastal wave power generation. In particular, the present invention relates to a submersion depth adjustment device suitable for cases where the water level difference is large.

[Prior art]

In general, coastal fixed wave power generation devices are used when the water level rises or
Alternatively, if the submerged depth of the front end wall in the coastal fixed air chamber for wave power generation is d, and the water depth at the front end wall installation location is D,
When d'/D becomes large, the wave energy exchange efficiency decreases significantly regardless of the length of the wavelength.

Therefore, it is desirable that the depth of submersion of the front end wall of the air chamber for fixed-shore wave power generation be as shallow as possible.

However, in coastal fixed wave power generation devices, the depth of submersion of the front end wall in the air chamber is shallow (if installed, the water surface may be affected by fluctuations in tide level, incidence of large wave heights, HaVesat down phenomenon, and surf beats). When the water level drops significantly, the water level separates from the front end wall of the air chamber, resulting in loss of wind wave energy.

In order to prevent the above losses, there was an idea to change the submerged part of the front end wall, but changing the submerged part requires energy loss for the driving device, durability of drive equipment, and lubrication of sliding parts in seawater. There were problems with the method and watertightness.

[Purpose of the invention]

Therefore, the present invention provides a submersion depth adjusting device with a U-shaped handle that can maintain watertightness while adjusting the submersion depth of the front end wall to follow changes in the water surface without supplying a driving force. , the purpose is to prevent wave energy loss.

(Structure of the Invention) That is, the submergence depth adjustment device of the front end wall of the air chamber for coastal fixed type wave power generation according to the present invention allows the door body, which has a certain submerged depth due to buoyancy, to be It is an oil-free lubrication system that has a seawater lubricant on the front end wall of the chamber, and is characterized by being slidably disposed while maintaining watertightness.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the air chamber 30 is surrounded by a front end wall 31, a rear end wall 32, a ceiling 33, and a side wall (not shown), and a generator 34 is installed on the ceiling 33. The symbol W indicates the reference water level. The symbol d indicates the depth of water submersion of the front end wall, and the symbol d indicates the water depth at the location where the front end wall is installed.

As shown in FIG. 2, a door body 2 that can slide along the front end wall 31 is disposed on the lower front surface of the front end wall 31 of the air chamber 30. This door body 2 is formed into a thin box shape, and the inside thereof is hollow. The buoyancy is adjusted by the ballast 4 so that it is thick at a constant submersion depth d.

A stopper 14 is fixed at the sliding top dead center of the door body 2, and a cushioning material 3 is fixed to this stopper 14. Further, a cushioning material 30 is fixed to the slide bottom dead center 26 of the door body 2. This lower end point 26 is the I4 on both the left and right sides that guide the door body 2.
Corresponds to the bottom of 27.

Each groove 27 has three sets of bearings B as shown in FIG.
It is equipped with a, Bb, and Bc. And bearing Ba
The rubber packing 11a4 housed between the pair of mixing plates 13a, 13a is attached to the bushing housing 9a (the bushing 10a is made of a single-digit seawater-resistant lubricant).
is configured to press against a sleeve metal 7a fixed to the front surface of the door body 2. Also, is the hair ring BC anti-heavy water moisture attached to the bush housing 9c? ? Sleeve metal 7 fixed to the rear surface of the door body 2 with a bush loc made of
It is configured to make contact with C. Furthermore, hair ring B
b is the coaming bar 13b and the bushing housing 9c
A bushing 10b made of a damping material is pressed against a sleeve metal 7b fixed to an end face of the door body 2 by a rubber packing X1b housed between the bushing 10b and a counterweight 7 attached to a bushing housing 9b.

Here, the seawater lubricant refers to a material that becomes slippery when it comes into contact with seawater, such as phenol resin or lignum hydroxide.

The sliding surface between the bushing [02] and the sleeve metal 7a and the sliding surface between the bushing tOa and the sleeve metal 7a are kept water-tight by the rubber packing lla, and the sliding surface between the bushing 101) and the sleeve metal 7b is kept water-tight by the rubber packing 111). The ttI dynamic surface of the ttl is kept watertight.

In addition, as shown in FIG. 2, a rolling gasket 5 is provided between the front end wall 31 and the upper part of the door body 2 to temporarily support the impact pressure of the waves acting on the front end wall 31. 1
8 from impact pressure. In order to prevent the rolling gasket 5 from falling off, the upper end plate 28 of the door body 2 is slightly protruded as shown in FIG.
); A combing bar 20 is fixed to the front surface of one end wall 31.

The airtight gasket 18 is mounted between a pair of gasket retainers 19 fixed to the lowermost edge of the front end wall 31, and is secured by bolts 21.

As shown in FIG. 6, the airtight gasket 18 is arranged so as to slide in close contact with the side surface of the sleeve metal 7C and the rear surface of the door body 2, so as to prevent moisture.

The structure is designed to maintain confidentiality. In addition, as shown in FIG. 7, this moisture seal 18 has a double structure on the inside consisting of a comb section 22 and a sponge section 23, and the outside is entirely covered with neoprene rubber (or Teflon) 24. It is constructed in a convex shape.

Next, the operation of the above device will be explained.

When the water level W rises to the water level Wl, the door body 2 floats due to its buoyancy, reaches the stopper 14 and stops as shown by the two-dot chain line.

Conversely, when the water level falls to the water level W2, the door body 2 also falls and stops against the buffer material 30 as shown by the solid line.

As a result, a submersion depth movable range d1 is obtained, and even if the water level fluctuates, waves do not substantially separate from the front end wall of the counter.

〔Effect of the invention〕

As described above, the present invention maintains watertightness by using an oil-free lubrication method with a seawater lubricant to maintain a door body having a certain submersion depth d against the front end wall of an air chamber for coastal fixed wave power generation. Since it is arranged so that it can slide freely, it can prevent the wave set down phenomenon from occurring due to changes in the tide level or when large wave heights occur.
Also, when the water level drops significantly, such as when a surf beat occurs, the water level does not separate from the front end wall of the air chamber.
In addition, the watertightness of the sliding parts can be maintained and there is no risk of loss of wave energy.

Therefore, it becomes possible to install it in places where it could not be installed due to large fluctuations in wave height.

In addition, since the sliding part of the door body is lubricated without oil, seawater contamination can be prevented. Since buoyancy is used to drive the door body, no driving equipment is required and energy loss can be prevented.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a coastal fixed wave power generation device, Figure 2 is an enlarged view of its main parts, Figure 3 is a sectional view taken along the line m-■ in Figure 2, and Figure 4 is 5 is a sectional view taken along line V-V in FIG. 2, FIG. 6 is a sectional view taken along line vr-■ in FIG. 5, and FIG.
It is a sectional view taken along the line -■. 2... Door body, 31... Front end wall of the air chamber for coastal fixed wave power generation. Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] The door body, which has a certain submersion depth due to buoyancy, is slidably placed against the front end wall of the air chamber for fixed-shore wave power generation, using an oil-free lubrication method with a seawater lubricant, while maintaining watertightness. A device for adjusting the submersion depth of a front end wall of an air chamber for fixed-shore wave power generation, characterized by: