JP3226205U - Drainage pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage pump device which prevents flooding of a river when a large-scale natural disaster occurs. A drainage pump device (1) is provided with a support column (2) extending vertically and having an upper end extending above the water surface of a river, and a water pump section (3) fixed to the support column (2) for circulating water by an electric motor. And having a substantially cylindrical shape, one opening surface of which serves as a water intake port 4a facing the upstream side of the river, and the other opening surface serves as a water discharge port 4b facing the downstream side, and the water circulated from the water pump section 3 is The engine unit 4 that drains water by rotating a screw with water pressure is provided. With this configuration, the drainage pump device 1 can prevent the flooding of the river when a large-scale natural disaster occurs. [Selection diagram] Figure 1

Description

  The present invention relates to a drainage pump device used to prevent flooding in a river.

  In recent years, environmental problems caused by the use of fossil fuels such as global warming have become serious, and large natural disasters are frequently occurring not only in Japan but also in various parts of the world. Among them, there are cases where the river water level exceeds the dangerous water area and floods due to heavy rain such as typhoons.

  As a conventional flood inflow prevention measure, for example, a pumping device used by inserting an underwater motor pump unit into water is disclosed (for example, refer to Patent Document 1). In addition, a drainage pump device that floats in water while using a vertical volute pump has been realized, and a drainage pump device capable of responding to a large disaster such as a flood, which allows higher head and more drainage, has been disclosed. See, for example, Patent Document 2). Further, an artificial river system having a water supply / drainage pipe for discharging natural river water absorbed by a suction port (with a valve) through a discharge port (with a valve) by a water supply / drainage control system with an electric pump is also disclosed ( See, for example, Patent Document 3).

Japanese Patent No. 3979514 JP 2007-262999 JP Utility model registration No. 3146975

  However, most conventional flood prevention measures are evacuation information issued when the river water level rises to a flood inundation value during heavy rain and reinforcement of river banks, and almost no dedicated equipment for flood prevention measures. It is currently not used.

  The present invention has been made in view of the above problems, and an object thereof is to provide a drainage pump device that prevents flooding of a river when a large-scale natural disaster occurs.

  In order to achieve the above-mentioned object, the drainage pump device according to the present invention has a column extending vertically and an upper end extending above the water surface of a river, and a column fixed to the column to circulate water by an electric motor. And a water pump portion having a substantially cylindrical shape, one opening surface of which serves as a water inlet facing the upstream side of the river, the other opening surface serves as a water outlet facing the downstream side, and is circulated from the water pump portion. An engine unit for draining water by rotating a screw by the water pressure of water.

  In this drainage pump device, it is preferable that the engine portion is attached to the column so that the lower end position thereof is arranged near the normal water level of the river.

  In this drainage pump device, the drainage pump may further include a solar panel and a communication device that receives power from the solar panel and that operates the water pump unit in response to a command from the outside. preferable.

  In this drainage pump device, the engine section is pressurized by the substantially cylindrical housing section attached to the support column along the river flow direction, the screw section provided in the housing section, and the water pump section. And a pipe path for ejecting water to the outer peripheral surface of the screw portion, the screw portion being a substantially cylindrical screw drum rotatably supported with respect to the inner wall of the housing portion via a bearing. And a plurality of fins, one end of which is connected and fixed to the inner wall of the screw drum part and rotatable with the rotation of the screw drum part, and the screw drum part rotates on its outer peripheral surface. It is divided into a plurality of sections by having a plurality of convex partition walls arranged side by side in the direction orthogonal to the direction. Against the partition wall, wherein the water pump unit is pressurized water is jetted through the piping path, it is preferable that the said fins and the screw drum unit by the rotational force generated when the rotate integrally.

  In this drainage pump device, it is preferable that the screw parts are continuously arranged in a plurality of stages in the housing part.

  In this drainage pump device, a cylindrical cylinder is inserted and fixed to the other end side of the fin of the screw part, and an extension of the cylinder along the flow direction of the river is provided in the opening part of the cylinder to collect the water flow in the fin. It is preferable that the above-mentioned gauling portion is installed.

  In this drainage pump device, it is preferable that the piping path is provided so that an angle at which water is jetted is an acute angle with respect to the screw drum portion.

  The drainage pump device according to the present invention includes a support column extending vertically and an upper end thereof extending above the water surface of a river, a water pump unit fixed to the support column and circulating water by an electric motor, Having a cylindrical shape, one opening surface serves as a water inlet facing the upstream side of the river, the other opening surface serves as a water outlet facing the downstream side, and the screw is rotated by the water pressure of the water circulated from the water pump section. It has an engine part for draining water. With this configuration, the drainage pump device according to the present invention can prevent flooding of a river when a large-scale natural disaster occurs.

It is a figure which shows the whole structure of the drainage pump apparatus which concerns on embodiment. It is a reference photograph figure of the engine part with which the above-mentioned drainage pump device is equipped. It is a perspective view of the screw part with which an engine part same as the above is equipped. (A) It is a perspective side view of the engine part same as the above, and (b) is a front view of the engine part same as the above. It is explanatory drawing of the propulsive force which arises in an engine part same as above. It is a schematic diagram for demonstrating the propulsive force which arises in an engine part same as the above. It is an image figure regarding installation in the downstream area of a drainage pump device same as the above. It is a functional block diagram of a drainage pump apparatus same as the above.

  A drainage pump device according to an embodiment of the present invention will be described with reference to the drawings. The drainage pump device 1 shown in FIG. 1 is used as a flood control device for a river. Flooding of rivers occurs when the drainage capacity of the river reaches a saturation state, and the cause is mostly geopolitical, and is due to the stall of the river water flow. In other words, the flow of the river becomes stagnant and the flow in the downstream direction changes direction. In order to eliminate the flooding of rivers, it is necessary to constantly flow water downstream when the dangerous water level is exceeded.

  First, the overall structure of the drainage pump device 1 will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the drainage pump device 1 includes a column 2, a water pump unit 3, an engine unit 4, a solar panel 5, a communication device 6, and a navigation obstacle light 7.

  The pillar 2 is fixedly installed, for example, at the river bottom of the river in the downstream region, extends vertically, and the upper end side extends above the water surface of the river. The water pump unit 3 is fixed to the column 2 and circulates water by an electric motor. The engine unit 4 has a substantially cylindrical shape as shown in FIG. 2, one opening surface of which serves as a water intake port 4a facing the upstream side of the river, and the other opening surface of which serves as a water discharge port 4b facing the downstream side. The screw is rotated by the water pressure of the water circulated from the pump unit 3 to drain the water. The engine part 4 is attached to the support column 2 so that the lower end position thereof is arranged near the normal water level of the river, and the cylinder diameter of the engine part 4 is, for example, 2500 mm and the cylinder length is 5000 mm.

  The solar panel 5 is a panel for generating electricity by sunlight, and supplies electric power to the communication device 6 and the navigation obstacle light 7. The communication device 6 receives power from the solar panel and receives a command from the outside to operate the water pump unit 3. The navigation obstacle light 7 is a red or white electric light used to indicate the presence of the drainage pump device 1 to a ship or the like, and performs lighting or blinking such that it becomes bright or dark. Here, as shown in FIG. 1, a pair of pillars 2 are erected upright along the river direction, and a solar panel 5 is horizontally installed on the uppermost surface thereof. The water pump unit 3 is installed below the solar panel 5, and a pair of engine units 4 are installed on the side surfaces of the support columns 2 along the river flow direction.

  Next, description will be made with reference to details of the structure of the engine unit 4. The engine part 4 includes a substantially cylindrical housing part 41 that is rotationally fixed to the support column 2, a screw part 42 provided in the housing part 41, and water pressurized by the water pump part 3 in the screw part 42. And a piping path for ejecting to the outer peripheral surface. The front surface and the rear surface of the housing part 41 are opened so as to pass the water of the river, and a piping path for circulating water from the water pump part 3 is communicated with the inside of the housing part 41.

  FIG. 3 is a perspective view showing details of the screw section 42 provided in the engine section 4. The screw part 42 includes a screw drum part 42a and fins 42b. The screw drum portion 42a is a substantially cylindrical member rotatably supported by the inner wall of the housing portion 41 via a bearing. More specifically, the screw drum portion 42a has a cylinder on the center side and two annular members on the outer peripheral surface of the cylinder, and the partition wall 42e is provided in the groove portion between the two annular members. It is provided. The fins 42b are a plurality of fins whose one end side (outer end) is connected and fixed to the inner wall of the screw drum portion 42a and which are rotatable as the screw drum portion 42a rotates. The fins 42b have various shapes, and are not limited to the shapes shown in this figure.

  More specifically, the screw portion 42 has a plurality of fins 42b, which is eight in the present embodiment, and is provided inside the ring of the screw drum portion 42a. For example, as shown in FIG. 3, the outer end of the fin 42b is inserted into a fixed portion 42c, which is a recess formed in conformity with the shape of the fin 42b provided on the inner peripheral side of the screw drum portion 42a, to form an integral body. It is fixed. It is desirable that the screw drum portion 42a and the fin 42b be integrally molded.

  Further, a cylindrical cylinder 42d is inserted and fixed to the other end side (rotation center side) of the fin 42b of the screw portion 42, and an opening portion of this cylinder 42d collects a water flow in the fin 42b to propel the hull in the propelling direction. A gauling portion 8 extended along the above is installed. Note that the structure of the gauling portion 8 is not an essential requirement.

  As shown in FIG. 3, the screw drum portion 42a is divided into a plurality of sections on the outer peripheral surface thereof by having a plurality of convex partition walls 42e arranged in parallel at a predetermined interval in a direction orthogonal to the rotation direction. ing. Then, as shown in FIG. 4, water is jetted to the partition wall 42e through a pipe path 31 for jetting water pressurized by the water pump portion 3 to the outer peripheral surface of the screw drum portion 42a. To be done. Then, the screw drum portion 42a and the fins 42b are integrally rotated (that is, the screw portion 42 is rotated) by the rotating force generated at that time, thereby obtaining a large drainage force.

  There are many configurations in which the screw portion 42 is rotatably held inside the housing portion 41. As an example, as shown in FIG. 4 (a), an annular groove is formed on the inner wall of the housing part 41 to fit the outer surface of the screw drum part 42 a, and the screw drum part 42 a and the housing part 41 The bearing 43 is interposed between the groove and the groove. With this configuration, the screw drum portion 42a is rotatably supported with respect to the housing portion 41. The bearings 43 are provided, for example, in units of about 0.5 mm between the screw drum portion 42a and the front surface side and the rear surface side.

  The piping path 31 for ejecting the water pressurized by the water pump section 3 to the outer peripheral surface of the screw drum section 42a becomes a pair of piping paths 31 as shown in FIG. 4B. In the present embodiment, the pair of piping paths 31 are arranged at positions facing each other at an interval of 180 degrees, and the openings of the piping paths 31 are provided so as to face in opposite directions.

  Further, the piping path 31 is provided so that the angle at which the pressurized fluid is ejected is an acute angle, more preferably the tangential direction, with respect to the screw drum portion 42a. The acute angle referred to here means that the angle between the tangent line and the jetting direction of the water jetted from the pipe passage 31 is 90 degrees or less with reference to the tangent line to the peripheral wall forming the annular screw drum portion 42a. Refers to. When water is applied perpendicularly to the screw drum portion 42a, rotational force is less likely to be generated in the screw drum portion 42a. Therefore, by adjusting the angle in this way, the screw drum portion 42a can easily obtain rotational force by water. become.

  Further, the water jetted from the pipe passage 31 is jetted to one of the sections of the screw drum portion 42a where the jet holes of the pipe passage 31 are close to each other, and the water jetted to the partition wall 42e exerts a rotational force. Add. As a result, the screw drum portion 42a and the fins 42b fixed to the screw drum portion 42a rotate in either direction, and drainage is started.

  When the screw drum portion 42a rotates, the water jetted from the pipe path 31 is jetted into the next compartment, and thus the rotational force is sequentially applied to the screw drum portion 42a. Then, the water jetted into each section in the screw drum portion 42a by the pipe passage 31 circulates to the outside of the screw drum portion 42a when the screw drum portion 42a rotates and reaches the position of the opposing pipe passage 31. To be done.

  It should be noted that it is conceivable to use a thermoplastic resin called polyoxymethylene as the material of the engine part 4 and the screw part 42. This resin has excellent impact resistance and abrasion resistance and is suitable for mass production. In particular, since its specific gravity is about 1.1, it is possible to make the engine unit 4 much lighter than the conventional one.

  As shown in FIGS. 5 and 6, in the engine section 4, in particular, the screw sections 42 are arranged side by side in a plurality of stages inside the housing section 41. The same water pressure is applied to the outer peripheral surface of the screw portion 42 from the water pump portion 3 via the pipe path 31. However, in this structure, the number of rotations of the screw portion 42 becomes faster as it comes to the position after the water flow. For example, in the case of the four screw parts 42 shown in FIG. 5, the rotation speed of the screw part 42 located on the downstream side of the water flow is gradually increased by about 30 to 50%, such as 200 rpm, 300 rpm, 450 rpm, and 680 rpm. Since the propulsive force of the hull itself is mainly determined by the number of revolutions of the screw section 42 at the last stage, by arranging the screw sections 42 in parallel in a plurality of stages, as a result, a very large propulsive force of the hull is obtained. Can be obtained. The number of stages of the screw portion 42 is not limited to four as shown in FIGS. 5 to 7, and a larger number of stages for obtaining a larger propulsive force may be arranged in parallel. In this case, the propulsive force can be improved without increasing the size and weight of the propulsion mechanism (engine).

  As shown in FIG. 5, when a plurality of screw parts 42 are rotated in the same direction, a biased force may be applied. Therefore, it is conceivable that adjacent screw parts 42 are alternately rotated in opposite directions.

  As shown in FIG. 7, a plurality of drainage pump devices 1 according to the present embodiment are installed over the downstream region of a river to maintain the flow of the river downstream, and are large-scale pump devices for flood prevention measures. Function as. For example, if the drainage amount of one drainage pump device 1 is 12.5 t / sec, the drainage amount per hour will be about 240,000 t, and if, for example, 10 drainage pump devices 1 are combined in the downstream region, the Tokyo Dome will be completed in 7 hours. One cup of drainage (about 1.24 million m3) becomes possible. In this way, it is possible to adjust the number of drainage pump devices 1 in advance according to the drainage capacity of rainfall in each river so that the water level will not exceed the standard value (2,500 mm). Become.

  Next, the functional configuration of the drainage pump device 1 according to the present embodiment will be described with reference to FIG. The drainage pump device 1 includes a water pump unit 3, an engine unit 4, a solar panel 5, a communication device 6, and a water level sensor 9. When the communication device 6 receives a command from the outside, the water pump unit 3 is started and the engine unit 4 rotates to start draining. Further, when the water level of the river detected by the water level sensor 9 exceeds the dangerous water level, the water pump unit 3 may be started and the engine unit 4 may rotate to start draining.

  As described above, the drainage pump device 1 according to the present embodiment is a water pump in which water is circulated by an electric motor and a column 2 that extends vertically and has an upper end extending above the water surface of a river. The part 3 and one opening face of the water intake port 4a facing the upstream side of the river, the other opening face of the water discharge port 4b facing the downstream side, the screw is rotated by the water pressure of the water circulated from the water pump part 3. And an engine unit 4 that drains water by doing so. Then, high-pressure water generated by the rotational power of the water pump unit 3 is jetted to a plurality of partition walls 42e arranged in parallel on the outer peripheral surface of the screw unit 42. With this structure, a large amount of river water can be drained by giving a rotating force to the screw portion 42, and the rise of the water level of the river can be prevented. As a result, the flood of the river can be prevented when a large-scale natural disaster occurs. For example, the drainage pump device 1 can control the flow of a river so that the water level does not exceed a reference value (for example, 2,500 mm). For this reason, it is possible not only to prevent enormous human and physical damage due to river flooding that has frequently occurred in recent years, but also to basically eliminate the need for reinforcement and repair work that will be required in the future, thus reducing enormous public expenses. Connected to.

  In addition, the water pump unit 3 does not generate combustion heat of an engine using fossil fuel, does not vibrate by a piston, and produces little noise, so that the environmental load can be reduced, which is particularly essential for realizing a decarbonized society. Can be a non-technical technique.

  Further, in the engine section 4, the screw sections 42 are arranged in parallel inside the housing section 41 in a plurality of stages. With this configuration, the rotation speed of the screw part 42 can be effectively and gradually improved in the subsequent screw part 42, and a sufficient drainage force can be obtained.

  Further, by using a resin such as polyoxymethylene for the material of the engine part 4, it is possible to mass-produce at a low price and to have an economically excellent hull structure. Further, since the pressurized fluid such as water is directly jetted to the outer peripheral surface of the screw portion 42, it is possible to prevent the cavitation effect caused by the compressed air covering the surfaces of the fins 42b of the screw portion 42, which is efficient. It becomes possible to realize drainage of river water.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, the partition of the screw drum portion 42a may be provided with a discharge port for discharging the water jetted into the partition formed by the partition wall 42e to the outside of the partition. By providing this discharge port, water can be efficiently discharged from the discharge port to the outside of the housing part 41 and the screw drum part 42a.

DESCRIPTION OF SYMBOLS 1 Drain pump device 2 Support 3 Water pump part 31 Piping path 4 Engine part 4a Water inlet 4b Water outlet 41 Housing part 42 Screw part 42a Screw drum part 42b Fin 42c Fixed part 42d Cylinder 42e Partition wall 5 Solar panel 6 Communication device 7 Navigation obstacle light 8 Gauling section 9 Water level sensor

Claims (7)

A pillar that extends vertically and the upper end extends above the water surface of the river,
A water pump unit fixed to the column and circulating water with an electric motor,
It has a substantially cylindrical shape, one opening surface is a water inlet facing the upstream side of the river, the other opening surface is a water outlet facing the downstream side, the screw by the water pressure of the water circulated from the water pump section. A drainage pump device, comprising: an engine unit that drains water by rotating.   2. The drainage pump device according to claim 1, wherein the engine part is attached to the pillar so that a lower end position of the engine part is arranged near a normal water level of a river.   The drainage pump further includes a solar panel and a communication device that receives power from the solar panel and that operates the water pump unit in response to a command from the outside. Or the drainage pump device according to 2. The engine section is
A substantially cylindrical housing part attached to the column along the flow direction of the river,
A screw portion provided in the housing portion,
A pipe path for ejecting the water pressurized by the water pump section to the outer peripheral surface of the screw section,
The screw part is
A substantially cylindrical screw drum portion rotatably supported to the inner wall of the housing portion via a bearing,
One end side is connected and fixed to the inner wall of the screw drum part, and a plurality of fins rotatable with the rotation of the screw drum part are provided,
The screw drum portion is divided into a plurality of partitions on the outer peripheral surface thereof by having a plurality of convex partition walls that are arranged in parallel in a direction orthogonal to the rotation direction. 4. The water pressurized by a pump is jetted out through the piping path, and the screw drum and the fin are integrally rotated by a rotational force generated at that time. The drainage pump device according to 1 above.   The drainage pump device according to claim 4, wherein the screw portion is continuously arranged in a plurality of stages in the housing portion.   A cylindrical cylinder is inserted and fixed on the other end side of the fin of the screw part, and a gauling part extended along the flow direction of the river is installed in the opening part of the cylinder to collect the water flow in the fin. The drainage pump device according to claim 4 or 5, wherein   The drainage pump device according to any one of claims 4 to 6, wherein the pipe path is provided so that an angle at which water is jetted is an acute angle with respect to the screw drum portion.