JP2006299528A - Water supply method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water supply method which enables water to be easily and inexpensively supplied even from a water source away from a reservoir by a distance of no less than several dozen kilometers to several thousand kilometers. <P>SOLUTION: A vacuum tower 2, the bottom of which is opened in the reservoir 1, and the water sources 8a, 8b and 8c in various places are connected together via a pipeline 3; the water is sucked into the vacuum tower from the water sources 8a, 8b and 8c through the pipeline 3 by using a vacuum suction force of an absolute vacuum section 2a which is formed in the vacuum tower 2; and the sucked water is supplied to the reservoir 1. This enables the water to be easily and inexpensively supplied even from the water sources 8 and 8a away from the reservoir 1 by a distance of no less than several dozen kilometers to several thousand kilometers, even if a driving source such as a pump is not used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a water supply method that aggregates water from a plurality of water sources scattered in various places into a reservoir using the principle of potential energy and the principle of Torricelli's absolute vacuum.

  In a vast area, you may want to concentrate water in one place. As a water supply method in such a case, a water supply facility is proposed in which a reservoir in which water is to be concentrated and a plurality of water sources scattered throughout a wide area are connected by a pipeline.

  In this water supply facility, in order to condense water in the reservoir, a suction pump is installed in the water source, and if the pipeline is long, a water supply pump is installed in the middle of the pipeline, The water from the water source had to be concentrated in the reservoir.

  However, when water is concentrated from such a water source to a predetermined location (reservoir), providing a means (pump) for applying water pressure to each water source increases the installation cost of the water pressure applying means, and the water supply facility itself Cost. In particular, when the water source is a few tens of kilometers away from the reservoir, it is necessary to install a water pump in the middle of the pipeline, which increases the cost.

  In view of the above problems, an object of the present invention is to provide a water supply method capable of collecting water easily and inexpensively and supplying water to a reservoir even from a water source located at a long distance.

  In order to achieve the above-mentioned object, the present inventor pays attention to the principle of Trichelli's vacuum and utilizes the vacuum suction force of the absolute vacuum part formed there, and this suction force instantly allows water from a remote water source. Devised a water supply method that can suck in water.

  Toricelli's vacuum is filled with mercury in a sealed tube of about 1 m under 1 atm. When the tube is turned over on a plate filled with mercury, the mercury in the tube gradually falls and the height is 760 mm. It stops when it becomes. This is a phenomenon that occurs due to the balance between atmospheric pressure and mercury. However, in the cylinder filled with mercury, the upper part is in a vacuum state when mercury falls.

  In the present invention, the above-mentioned Torricelli's vacuum principle is utilized, and a vacuum tower is provided as an alternative to a cylinder, water is provided as an alternative to mercury, and a reservoir is provided as an alternative to a dish.

  That is, in the present invention, when collecting water from water sources existing in various locations in the reservoir, a water tower is constructed by connecting a vacuum tower whose bottom is opened in the reservoir and the water sources in various locations via a pipeline, It is characterized by using the vacuum suction force in the absolute vacuum section formed in the vacuum tower to suck water through the pipeline from various water sources and supply the sucked water to the reservoir.

  In the above configuration, Torricelli's absolute vacuum principle, which was far beyond the idea of practical use until now, is used as a means of water suction, and combined with modern advanced construction technology, a large-scale advanced vacuum A state is formed, and the suction force makes it possible to distribute a large amount of water over a wide range with a global standard.

  In order to form an absolute vacuum section in this vacuum tower, it is not possible to turn over the vacuum tower instead of the cylinder as in Tricelli's experiment. Instead, a top valve is provided at the top of the vacuum tower. By filling the inside with water and expelling the air inside the vacuum tower, and then closing the top valve and balancing the atmospheric pressure with the water column in the vacuum tower, an absolute vacuum is created at the top of the vacuum tower. Forming part.

  As another method, a vacuum tower that is open on one side and closed on the other side is placed in a horizontal state, and water is supplied into the vacuum tower from one side to fill the vacuum tower. There is also a way to stand vertically to the reservoir. In this case, as in the above method, the water in the vacuum tower is expelled downward from the bottom, the water level drops, the water level stops at a position where the atmospheric pressure and the water column in the vacuum tower are balanced, An absolute vacuum portion is formed on the top of the substrate.

  The absolute vacuum part has theoretically zero pressure, and the larger the volume, the stronger the suction force can be obtained. Therefore, the larger the vacuum tower in the radial direction and the height direction, the better. The shape of the vacuum tower is not particularly limited, and a cylindrical shape or a spherical shape can be exemplified.

  Here, the water sucked into the vacuum tower is supplied to the reservoir from the bottom of the vacuum tower, but the relationship between the water level of the reservoir and the height of the water column in the vacuum tower is theoretically always constant (10 m30 cm). Therefore, if the water level of the reservoir rises, the water level of the water column in the vacuum tower will also rise, and the volume of the absolute vacuum part formed in the upper part will become smaller and the water suction force will decrease. Become.

  In order to ensure the absolute vacuum volume, the height of the water column in the vacuum tower must be adjusted. The height of the water column can be adjusted by adjusting the water surface of the reservoir based on the Torricelli vacuum principle.

  Therefore, in the present invention, the water level in the vacuum tower is adjusted to a predetermined level by adjusting the water level of the reservoir by the water level adjusting means. Examples of the water level adjusting means include a water level adjusting valve provided in the reservoir and an overflow hole formed in the side wall of the reservoir.

  With this water level adjustment means, the height of the water column in the vacuum tower can be adjusted to a predetermined level, ensuring the absolute vacuum volume and always using the global standard without using a pump or other drive source. Can automatically draw water from various water sources.

  As described above, according to the present invention, a vacuum tower whose bottom is opened in the reservoir and another water source are connected via a pipeline to form a water supply path, and vacuum suction in an absolute vacuum section formed in the vacuum tower. Using force, water is sucked from another water source through the pipeline, and the sucked water is supplied to the reservoir, so even if you do not use a drive source such as a pump, it is several tens to thousands of kilometers away from the reservoir. Water can be easily and inexpensively supplied from a water source.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a water supply facility for carrying out the water supply method according to the present invention, FIG. 2 is a schematic view showing a pipeline laying state between a reservoir and a water source, and FIG. It is the schematic which shows the state extended in the shape.

  As shown in the figure, the water supply facility has a reservoir 3 for concentrating water, a vacuum tower 2 standing in the reservoir, and a pipeline 3 connecting the reservoir 1 and water sources 8a, 8b, 8c scattered in various places. And.

  The reservoir 1 is formed in a place where water is to be concentrated. The reservoir 1 may be either a natural pond or an artificial pond whose upper side is open to the atmosphere. Adjacent to the reservoir 1, a second reservoir 7 is installed at a position lower than that, and a third reservoir 12 is installed at a position lower than the second reservoir 7 as appropriate. These reservoirs 1, 7, 12 are communicated with each other by water channels 9, 10, and a water level adjusting valve 6 is provided in each channel to adjust the water level of the reservoirs 1, 7. The water stored in the second reservoir 7 or the third reservoir 12 is distributed to each demand destination through a pipeline (not shown).

  The vacuum tower 2 has a semi-spherical top and a cylindrical main body, and is erected with its open bottom immersed in the reservoir 1. The vacuum tower 2 has an airtight state inside, and an absolute vacuum part 2a is formed in the upper part, and water is supplied from each water source 8a, 8b, 8c to the vacuum tower using the vacuum suction force of the absolute vacuum part 2a. 2 can be sucked into.

  The absolute vacuum portion 2a is formed by utilizing the Trichelli vacuum principle. As described above, the Torricelli vacuum is filled with mercury in a sealed tube of about 1 meter under 1 atm. When the tube is turned upside down on a plate filled with mercury, the mercury in the tube gradually falls. And stops when the height reaches 760 mm. This is a phenomenon that occurs due to the balance between atmospheric pressure and mercury. In the cylinder filled with mercury, the upper part is in a vacuum state when mercury falls. This vacuum part becomes an absolute vacuum.

  In the present invention, the above-mentioned Torricelli's vacuum principle is used, and a vacuum tower 2 is provided as an alternative to a cylinder, water is provided as an alternative to mercury, and a reservoir 1 is provided as an alternative to a dish. Since the vacuum tower 2 is difficult to reverse like a cylinder, a top valve 4 is provided instead. By opening and closing the top valve 4, an absolute vacuum part 2a is formed inside.

  That is, when the water in the reservoir 1 is pushed up into the vacuum tower 2 and filled, the top valve 4 is opened, and the water pushed up in the vacuum tower 2 causes the internal air to escape from the top valve 4 to the outside. If water is discharged from the top valve 4 to the outside, the valve is closed and the vacuum tower 2 is filled with water. Then, by closing the top valve 4, the water pressure of the reservoir is pushed, and the atmospheric pressure and the pressure in the vacuum tower (the pressure of the absolute vacuum section 2a + the pressure of the water column below the vacuum tower) are balanced, and the water column from the water surface of the reservoir Is stopped at a position where the height (water level) is constant (theoretically 10 m33 cm), and an absolute vacuum part 2a is formed on the top.

  In addition, a pump 1 is installed in the reservoir 1 in order to fill the vacuum tower 2 with water. The discharge side of the pump 13 is connected to the bottom of the vacuum tower 2, and the pump can pump water up to the top of the vacuum tower 2. If the height of the pumping water is high and cannot be covered by a single pumping pump, the vacuum tower may be efficiently filled with water by using a plurality of pumping pumps.

  The vacuum tower 2 is basically in a state where the bottom is open, but as shown in FIG. 1, the vacuum tower 2 is located at a position where the pumped pump 13 is connected to the closed bottom and a position where the reservoir 1 is opened. A bottom valve 5 consisting of a switchable three-way valve may be provided.

  Moreover, the absolute vacuum part 2a and the water sources 8a, 8b, 8c communicate with the tower wall of the vacuum tower 2 so that water from the water sources 8a, 8b, 8c can be sucked into the absolute vacuum part 2a. Pipeline connection port 2b is formed. The connection port 2 b is connected to the pipeline 3 and is provided with an on-off valve 3 a that closes the pipeline 3 when the absolute vacuum part 2 a is formed in the vacuum tower 2.

  Examples of the water sources 8a, 8b, and 8c may include lakes, reservoirs, and rivers scattered in a wide area. As shown in FIGS. 2 and 3, the pipeline 3 is arranged on a substantially horizontal line, extends radially or in a mesh shape (web shape), and is connected to the water sources 8a, 8b, 8c in various places, and the vacuum tower 2 The connection port 2b can be consolidated.

  In the water supply facility having the above configuration, in order to collect water from the water sources 8a, 8b, 8c into the reservoir 1, an absolute vacuum part 2a is formed in the vacuum tower 2, and the vacuum suction force of the absolute vacuum part 2a is used. Aspirate water. For that purpose, the absolute vacuum part 2 a must be formed in the vacuum tower 2.

  In order to form the absolute vacuum part 2 a, a Trichelli vacuum is formed at the top of the vacuum tower 2. For this, first, the on-off valve 3 a of the pipeline 3 is closed, the top valve 4 is opened, and the water in the reservoir 1 is filled into the vacuum tower 2 by the pumping pump 13. When filling the vacuum tower 2 with water, if the amount of water in the reservoir 1 cannot cover the water, the water may be supplied from the adjacent second reservoir 7 or third reservoir 12.

  When the vacuum tower 2 is filled with water, the pumping pump 13 is stopped and the top valve 4 is closed. As a result, the water level in the vacuum tower 2 is gradually lowered to form an absolute vacuum portion 2a called a so-called Torricelli vacuum, and the water column 15 in the vacuum tower 2 is balanced with the atmospheric pressure pushing the water surface of the reservoir 1. And stop. In this state, atmospheric pressure acts on the water surface of the reservoir 1, and the absolute vacuum part 2 a theoretically becomes an absolute vacuum, so that the water level of the water column 15 in the vacuum tower 2 is 10 m33 cm from the water surface of the reservoir 1. Of height.

  On the other hand, the absolute vacuum portion 2a is formed above the water column 15. The larger the volume, the larger the vacuum suction force. When the on-off valve 3a of the pipeline 3 is opened, a large amount of water is supplied from the water sources 8 and 8a. Water can be sucked in instantly.

If the vacuum tower 2 in the present embodiment is cylindrical with a radius of 17 m and a height of 140.33 m, the volume of the absolute vacuum part 2 a is
(140.33 m-10.33 m) × 17 m × 17 m × π (circumferential ratio) = 117,970 m ³
It becomes.

  Now, when the absolute vacuum part 2a and the water sources 8a, 8b, 8c are connected by the pipeline 3, the pressure of the absolute vacuum part 2a (theoretically pressure = 0) and the pressure pushing the water surface of the water sources 8a, 8b, 8c ( Due to the difference from the atmospheric pressure, water is sucked to the absolute vacuum part 2a side. This relationship is not related to the length of the pipeline 3. Therefore, water can be collected and supplied to the reservoir 1 even from the water sources 8a, 8b, and 8c that are remote from the reservoir 1.

  Here, the example in which the pipeline 3 is stretched on the horizontal line is shown, but as shown in FIG. 2, there is a slight difference in height when actually laid. Considering the pipeline 3 on the horizon as a reference, the water source 8b located at a position higher than the horizon can supply water to the pipeline 3 on the horizon using its potential energy.

  The water sources 8a and 8c at a position lower than the horizon line have absolute vacuum portions 2a due to the difference between the pressure of the absolute vacuum portion 2a (theoretically pressure = 0) and the pressure (atmospheric pressure) pushing the water surface of the water sources 8a and 8c. Since water is sucked to the side, it is theoretically possible to suck even if there is a height difference of 10 m33 cm.

  Actually, the suction force of the absolute vacuum part 2a is assumed to be that the pressure of the absolute vacuum part 2a is increased when bubbles are mixed into the water and supplied to the absolute vacuum part 2a. Ideally, the height difference from 8 is within 7 m with a tolerance of about 3 m. And when the position of the water source 8 is less than this, the water of the water source 8 may be set so as to fall within the allowable range by pumping up.

  For example, as shown in FIG. 2, in the case of a water source 8a having a water depth of 6 m, even if the allowable value (7 m) is taken into account, the entire amount of water can be sucked and supplied to the reservoir. Even in the case of the water source 8c having a water depth of 15 m and a water surface that is 3 m below the horizon, the pressure of the absolute vacuum portion 2a (theoretically pressure = 0) and the pressure that pushes the water surface of the water source 8c (atmospheric pressure) Therefore, the water from the water source 8c can be sucked and supplied to the reservoir 1 side without any problem practically.

  Thus, in the present invention, the absolute vacuum portion 2a is formed in the vacuum tower 2, and water is sucked from the water sources 8a, 8b, 8c in various places using the vacuum suction force of the absolute vacuum portion 2a. 1 can be aggregated. At this time, once the absolute vacuum portion 2a is formed on the upper portion of the vacuum tower 2 using the Torricelli vacuum principle, the power from the water sources 8a, 8b, and 8c in various places is efficiently used without any power thereafter. Suction can be performed well, and the cost can be greatly reduced.

  Next, the water sucked into the vacuum tower 2 from the connection port 2b of the vacuum tower 2 through the pipeline 3 increases the water level in the vacuum tower 2 and partly flows to the reservoir 1 side. However, even in this case, the principle of Trichelli's vacuum is acting, and the water level A of the water column 2 in the vacuum tower 2 always tries to keep constant. Therefore, as the water level of the reservoir 1 rises, the absolute water level of the water column of the vacuum tower 2 also rises. It is preferable to always keep the volume of the absolute vacuum part 2a constant, and as a standard, it is preferable that the connection port 2b is not blocked by the water column 15.

  In order to ensure such a volume of the absolute vacuum part 2a, it is necessary to adjust the water surface height of the reservoir 1. For this purpose, when the water level of the reservoir 1 rises due to the increase in the water supplied to the reservoir 1 from the water sources 8a, 8b, 8c, the water level control valve 6 is opened to supply the water in the reservoir 1 to the second reservoir 7 side. The water level of the reservoir 1 may be adjusted to a predetermined level.

  In this way, a water supply channel is constructed by connecting a vacuum tower whose bottom is opened in the reservoir and water sources in various places through a pipeline, and utilizing the vacuum suction force in the absolute vacuum part formed in the vacuum tower. Since water is sucked from the water source through the pipeline and the sucked water is supplied to the reservoir, it is easy and inexpensive even from a water source several tens to several thousand kilometers away from the reservoir without using a drive source such as a pump. Water can be supplied.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that many modifications and changes can be made within the scope of the present invention. For example, although the cylindrical vacuum tower is illustrated in the above embodiment, the present invention is not limited to this, and a spherical vacuum tower may be used. Moreover, although the water level control valve was illustrated as a means for adjusting the water level of the reservoir, an overflow hole is formed in the side wall of the reservoir, and the water level of the reservoir can be adjusted so as not to exceed a certain level.

  As described above, according to the water supply method of the present invention, water can be supplied easily and inexpensively even from a water source several tens to several thousand km away from the reservoir, and the water supply method can be used for irrigation or desert greening. Can be used as

Schematic showing a water supply facility for carrying out the water supply method of the present invention Schematic side view showing pipeline laying state between reservoir and water source Plan view showing a state where the pipeline between the reservoir and the water source is stretched around in a mesh pattern

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reservoir 2 Vacuum tower 2a Absolute vacuum part 3 Pipeline 4 Top valve 5 Bottom valve 6 Water level control valve 7 Second reservoir 8a, 8b, 8c Water source 9, 10 water channel A Water level in the vacuum tower B Height difference

Claims (3)

A water supply channel connecting a vacuum tower whose bottom is open in the reservoir and a water source existing in various places through a pipeline, and using the vacuum suction force in the vacuum section formed in the vacuum tower, A water supply method, wherein water is sucked from a water source through a pipeline and supplied to a reservoir. A top valve is provided at the top of the vacuum tower, and after filling the vacuum tower with water in an open state of the top valve, the top valve is closed, and the inside of the vacuum tower is communicated with the inside of the vacuum tower. The water supply method according to claim 1, wherein an absolute vacuum portion is formed according to the Trichelli vacuum principle. The water supply method according to claim 1 or 2, wherein the water level in the vacuum tower is adjusted to a predetermined level by adjusting the water level of the reservoir by a water level adjusting means.

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