JPH03258925A - Compressed air storage tank in compressed air storage power generating system - Google Patents

Abstract

PURPOSE:To shorten the construction time and eliminate the need to handle large heavy cargos during constructing by providing compressed air storage tanks in pipe-piles for constructing buildings whose end faces have airtight structures. CONSTITUTION:When a plant is constructed, pipe-piles 1 whose end faces have airtight structures are driven. Compressed air storage tanks 2 are then provided in the pipe-piles 1. Thus, since the compressed air storage tanks 2 are used together with the pipe-piles 1 for plant-foundation, the construction time can be shortened, and the need to handle large heavy cargos during construction can also be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a compressed air storage tank used in a compressed air storage power generation system that utilizes surplus electric power.

[Conventional technology] Electricity demand is much greater during the day than at night. Therefore, by storing surplus electricity during the night in some form and supplying it during the day, it is possible to avoid increasing the electricity supply capacity by a significant amount. You can also use that ability to your fullest.

Therefore, several measures have been proposed or implemented in order to store the above-mentioned nighttime power.

For example, a system as shown in FIG. 2 of the accompanying drawings is known in which compressed air is produced using the above-mentioned surplus power and stored to prepare for regeneration during the day. In Figure 2,
The electric motor 51 drives the compressor 52 in response to surplus power at night, and compressed air is stored in the storage tank 53. The compressed air in the storage tank 53 is taken out during the day when power consumption is high and is used in the combustor. The combustion gas obtained here drives a gas turbine 55 and generates electric power from a generator 56. In this way, surplus electricity during the night is used during the day.

Here, as a concept for the air storage tank 53, a concept as shown in FIG. 3 has been proposed. That is, an above-ground compressed air tank 61. Semi-underground compressed air tank 62. Shallow underground compressed air tank 63. Large deep underground compressed air tank 64. A seabed installed compressed air tank 65 and the like have been proposed. These conventional compressed air tanks include pressure tank types, storage methods in underground cavities, storage methods installed in structures on the seabed, etc.
), but all of them have thick walls and are large due to their high pressure and large volume.In the figure, 66 is a gas turbine power plant, 67 is an offshore floating gas turbine power plant, and 68 is a reservoir. It is.

Furthermore, there is the Huntorf power plant in West Germany as a compressed air storage power generation system that is already in operation (Central Institute of Electric Power Industry Report U37094 July 1986), here 290
It has a capacity of MW and has a deep underground compressed air tank located in a strong rock salt layer.

First, the creator of this case filed a patent application No. 1-18591.
No. 4 proposes a compressed air storage power generation system, but the concept for the compressed air storage tank does not go beyond the range shown in FIG.

[Problems to be solved by the invention] The area around the neck of our country is composed of the geology shown in Figure 4, so it is difficult to use bedrock.

As mentioned above, conventional compressed air tanks have thick walls and are large, so construction time is long, construction costs are high, heavy objects must be handled during construction, and installation locations are also restricted. Therefore, there has been a demand for a large-volume, high-pressure compressed air tank that is easy to construct.

[Means for Solving the Problems] The compressed air storage tank according to this invention is an air storage tank for a compressed air storage power generation system, and the tank is made of a pipe pile of a building, and the end face of the pipe pile is It is characterized by having an airtight structure.

[Function] Since this invention is constructed as described above, the construction time is short and there is no need to handle heavy objects during construction.

[Example] This invention will be explained below using figures. Figure 1 (1) shows a pipe pile according to an embodiment of this invention.The vibrator installed during plant construction has an inner diameter of 1 m, a slightly larger diameter than a normal pipe pile, and a length of approximately 100 m to 1 m.
A tank for storing compressed air is installed inside this nokuib pile, which is 50 m long and is driven a little deeper than a normal tsumaib pile. The wall thickness of the pipe pile in this example is 27
It is mm. In Figure 0, where this pipe pile is also used as a pipe pile for a plant foundation, 1 is a nob pile, 2 is a tank for storing compressed air, and 3 is the ground.

Figure 1 (2) and Figure 1 (3) show in detail the situation of one construction method for pipe piles according to the above embodiment of this invention.
Figure (2) shows the situation when driving the pipe pile 21.
In the figure, 23 is a driving unit. The driving head pipe 24 is inserted into the inner surface of the pipe pile 21 to the position where it abuts against the driving arm 23 to prevent the upper surface flange 22 from being deformed by the impact of the driving hammer. A conical pile tip 25 is attached to the lower end of the pipe pile 21. As shown in FIG. 1 (3), when the driving of the vibrator pile 21 is completed, the driving head pipe 24 is removed and the bottom mirror plate 26 is dropped into the bottom of the pipe pile 21, and the pipe is circularly inserted to create an airtight structure. Weld the circumference completely. Thereafter, the upper mirror plate 27 is attached to the upper surface flange 22 via the gasket 28. A compressed air supply pipe 30 is attached to the upper end plate 27. Thereafter, the upper end plate 27 and the upper surface flange 22 are tightened with two annular clamps to form an airtight structure.

Figure 1 (4), Figure 1 (5) and Figure 1 (6) show in detail the situation of other construction methods for pipe piles according to the above embodiment of this invention. In Figure 0, which shows the situation when driving the pile 21, 23 is a driving web.The driving head pipe 24 is inserted into the inner surface of the pipe pile 21 until it contacts the driving web 23, and then the driving hammer is inserted. This is similar to the above example in that the top flange 22 is prevented from being deformed by the impact of 0
Next, when the pouring of the pipe pile 21 is completed as shown in FIG. The fresh concrete wraps around the lower end of the pipe pile 21 and solidifies to form a concrete mass 35 as shown in FIG.
As shown in 6>, the concrete pressure pipe 31 is removed, and the bottom end plate 26 is dropped into the bottom of the pipe pile 21, and the circumference is completely welded to create an airtight structure. Thereafter, the upper mirror plate 27 is attached onto the upper flange 22 via the gasket 34. A compressed air supply pipe 30 is provided on the upper end plate 27.
is installed. Thereafter, the upper end plate 27 and the upper surface flange 22 are tightened with a tightening bolt donut 33 to form an airtight structure.

In the situations shown in Fig. 1 (3) and Fig. 1 (6), the inside of the pipe pile 21 becomes a tank that stores about 80 kg/- of compressed air. Compressed air is supplied and discharged through the compressed air supply pipe 30. It stores and releases energy depending on what happens.

Figure 4 shows the geology around the neck of Japan. In Figure 0, the fourth group layer is soft and it is difficult to use the bedrock, and large pipe piles are built a little deeper than normal pipe piles. It is extremely easy to type in.

[Effects of the invention] In the compressed air storage power generation system of this invention, the compressed air storage tank is also used as the pipe pile for the plant foundation, so no installation space is required, construction time is short, and construction costs are also saved.

[Brief explanation of drawings]

Figure 1 (1) is a vertical cross-sectional view showing one embodiment of this invention, Figure 1 (2), Figure 1 (3), Figure 1 (4), Figure 1 (5).
) and Figure 1 (6) are longitudinal cross-sectional views showing the construction method of this invention, Figure 2 is an explanatory diagram showing the flow of the compressed air storage power generation system, and Figure 3 is a conventional compressed air storage power generation system. Fig. 4 is an explanatory diagram showing the compressed air storage tank in Fig. 4, and Fig. 4 is an explanatory diagram showing the geology around the neck of Japan. 1 - Pipe pile, 2... Tank, 3... Ground, 2-doped pipe pile, 22... Top flange, 23... Web for driving, 24... Head pipe for driving, 25...
Conical pile tip, 26... Bottom mirror plate, 27... Upper mirror plate, 2
8... Gasket, 2... Clamp, 30... Compressed air supply pipe, 31... Concrete pressure feed pipe, 32...
...Bottom plate, 33...Tightening bolt donut, 34...
・Gasket, 35... Concrete lump, 51...
Electric motor, 52... Compressor, 53... Air storage tank, 54.
...Combustor, 55... Gas turbine, 56... Generator, 61... Above ground compressed air tank, 62... Semi-underground compressed air tank, 63... Shallow underground compressed air tank , 64...
- Deep underground compressed air tank, 65... Seabed installed compressed air tank, 66... Gas turbine power plant, 67... Offshore floating gas turbine power plant, 68... Reservoir. Figure 1

Claims (1)

[Claims] 1. An air storage tank for a compressed air storage power generation system, characterized in that the tank is made of a pipe pile of a building, and the end surface of the pipe pile has an airtight structure.