JP5681738B2 - Siphon drainage system - Google Patents

Description

  In the present invention, the water stored in a reservoir (flooded portion) generated upstream of a natural dam (river blockage) generated by an earthquake, rainfall, or the like is drained to a lowland downstream by siphon action. The present invention relates to a new siphon drainage system.

  When a natural dam (river blockage) occurs due to a large-scale landslide caused by an earthquake or rainfall, the water level of the reservoir (reservoir) generated upstream of the natural dam rises abnormally and the natural dam When water begins to overflow from the weir, the sediment of the weir breaks all at once, and the collapsed sediment becomes a debris flow and flows into the lowland on the downstream side, attacking the village in the lowland and causing a serious accident Therefore, it is required to quickly drain the reservoir to a safe place.

  Therefore, conventionally, drainage work such as a drainage pump and a generator for operating the drainage pump is installed at the site to perform drainage work.

  However, since it is assumed that the approach road to the natural dam occurrence site is severed, drainage pumps and generators need to be transported by air transport means such as helicopters. Naturally, there is a limit, and it is practically difficult to drain large volumes of water in a short time. It is necessary to keep refueling the generator for operating the drainage pump. It takes time to transport the fuel, and the drainage pump is likely to be clogged with earth and sand, and there are many drainage interruptions and breakdowns of the drainage pump. There is a problem that it is difficult to ensure a desired drainage capacity due to a limitation in weight.

  The present invention has been made in view of such circumstances, eliminates the use of conventional drainage pumps and generators, can be quickly and easily installed on the site, and can ensure a desired drainage capacity immediately. Thus, an object of the present invention is to provide a novel siphon drainage system that can solve the conventional problems.

In order to achieve the above object, the invention of claim 1 is a siphon drainage system for draining water stored in a reservoir upstream of a natural dam to a lowland downstream of the natural dam,
A drainage control unit installed at the top of the natural dam, a suction unit floating on the water surface of the reservoir and capable of detecting the water level, a drainage unit having a discharge valve installed in the lowland, Supported by a drainage control unit, and configured by a connection hose that communicates the suction unit and the drainage unit,
The drainage control unit includes a drive source, a vacuum pump driven thereby, a suction circuit communicating the vacuum pump and the connection hose, and a full water detector for detecting the fullness of the suction circuit,
When the water level of the suction unit is detected, the drive source is activated to operate the vacuum pump, and the inlet valve of the vacuum pump and the discharge valve of the drain unit are closed, and thereafter the inlet valve is opened. The intake of the water in the reservoir is started, and when the full water detector detects the full water, the inlet valve is closed and the discharge valve is opened to stop the operation of the drive source after the siphon action is established. The water stored in the reservoir is continuously drained to the outside through the suction unit, the connecting hose, and the drain unit.

  In order to achieve the above object, the invention of claim 2 is the invention of claim 1, wherein the drainage control unit controls the operation of the drive source, the vacuum pump, the full water detector, the suction circuit, and various devices. And a joint pipe is provided on the outer side surface of the casing, and the connection hose is supported by the joint pipe.

  To achieve the above object, the invention of claim 3 is the invention of claim 2, wherein the joint pipe comprises a plurality of joint pipes for supporting a plurality of connection hoses, respectively. It is characterized by being provided symmetrically on the outer surfaces of the left and right side walls.

  In order to achieve the above object, the invention of claim 4 is the invention of claim 1, wherein the drainage control unit, the suction unit and the drainage unit are all portable and have air transportation means on the upper surface thereof. It is characterized by having a hanging tool for hanging and transporting.

  In order to achieve the above object, according to a fifth aspect of the present invention, in the first or fourth aspect of the invention, the suction unit is floated on the water storage surface of the reservoir by a float, and the suction port is formed by a mesh member. It is characterized by being surrounded by a filter.

  According to the invention of each claim, a driving source such as a small and light engine generator and a vacuum required for establishing a siphon action without using a conventional large and heavy drain pump or generator. With the drainage system equipped with the pump, the water stored upstream of the natural dam can be drained quickly, easily, accurately and efficiently into the lowland downstream.

  According to the invention of claim 2, the drainage control unit is unitized and can be easily installed on the top of the natural dam, and does not require external power, and the suction unit and the drainage unit. By automatically controlling the siphon effect, the reservoir water can be drained to low ground, and the connection hose is supported by the drainage control unit, and the drainage control unit quickly sucks into the connection hose. The siphon action can be established quickly and reliably.

  According to the invention of claim 3, the joint pipe is composed of a plurality of pipes for supporting a plurality of connection hoses, respectively, and the joint pipes are provided symmetrically on the outer surfaces of the left and right side walls of the casing. Therefore, it is possible to support a plurality of connection hoses in a balanced manner.

  According to the invention of claim 4, the drainage control unit, the suction part unit and the drainage part unit are all portable and can be suspended and transported by air transportation means on the upper surface thereof. Even if the approach road is cut off, it can be placed in a predetermined place without difficulty.

  According to the invention of claim 5, since the suction unit is floated on the water storage surface of the reservoir by the float, and the suction port is surrounded by the filter, foreign matter such as coarse dust or driftwood can be sucked in. In addition, it does not inhale the sediment at the bottom of the water and can perform the intake of stored water without any trouble.

Overall side view of siphon drainage system FIG. 1 is a partially broken plan view of the drainage control unit shown by the arrow 2 in FIG. 3 arrow view of FIG. Sectional view along line 4-4 in FIG. FIG. 1 is a plan view of the suction unit shown in the direction of arrow 5 in FIG. Sectional drawing which follows the 6-6 line of FIG. FIG. 7 is a plan view of the drainage unit as seen from the arrow 7 in FIG. Sectional drawing which follows the 8-8 line of FIG. Siphonic drainage system control block diagram

  Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

  In the following description, based on the flow direction of the drained water, the upstream side of the water flow direction is “front”, the downstream side is “rear”, the left and right sides of the water flow direction are “left and right”, The top and bottom with respect to the flow direction is “up and down”.

  As shown in FIG. 1, the siphon drainage system according to the present invention includes a drainage control unit U1 installed at the top of a natural dam (river blockage) 1 generated by a large-scale landslide caused by an earthquake or rainfall. , A suction unit U2 suspended in a reservoir (flooding unit) 2 generated upstream of the natural dam 1, a drain unit U3 installed in a lowland 3 downstream of the natural dam 1, and the drainage Four systems of connecting hoses H are connected to the suction unit U2 and the discharge unit U3, and are supported by the control unit U1, and the water stored in the reservoir 2 is siphoned to the lowland 3 Continuously and automatically drained quickly and reliably.

  Next, the configuration of the drainage control unit U1 will be described with reference to FIGS.

  The drainage control unit U1 installed at the top of the natural dam 1 is a portable type and includes a casing 10 formed in a rectangular parallelepiped shape from an aluminum alloy. The casing 10 includes a casing body 10a and its casing 10a. A lid plate 10 b that closes the entrance through a sealing member 13 is formed in a more sealed shape, and various devices described below are accommodated in the housing 10. A plurality of base jacks 11 that can be adjusted in height are provided at the bottom of the housing 10, and the housing 10 is suspended on a top surface of the housing 10 by a suspension cable and transported in the air by air transportation means such as a helicopter. The hanger 12 is provided.

  In the case 10, various devices for controlling the operation of the siphon drainage system according to the present invention are housed in a unit. That is, the portable generator 14 as a drive source, the generator A vacuum pump 15 driven by the electric power of the machine 14, a full water detector 16 having a full water detection sensor S2 for detecting a full water state of a suction circuit 21 to be described later, and a control panel 18 with a capacitor 17 for controlling the operation of various devices. In addition, an inlet valve V1 composed of four normally-open electromagnetic open / close valves connected to a suction circuit 21 that communicates the suction port of the vacuum pump 15 with a connection hose H through a full water detector 16. Is provided. Further, a main switch S for operating the siphon drainage system is provided at a suitable location outside the housing 10.

  On the outer surfaces of the left and right side walls of the housing 10, two connection hoses H, each including four suction hoses 22 ...; 23 ... on the suction side and the drain side, are symmetrically supported.

  A total of four support members 26 are vertically and symmetrically provided integrally with each other at the center in the front-rear direction of the outer surfaces of the left and right side walls of the housing 10. Four joint pipes 25 are integrally supported by these supporting members 26. As shown in FIG. 4, the pair of left and right joint pipes 25, 25 are provided symmetrically on the outer surfaces of the left and right side walls of the housing 10 with a space in the vertical direction. Each joint pipe 25 extends along the front-rear direction of the housing 10, and the downstream end of the suction side suction hose 22 and the upstream end of the drain side suction hose 23 are respectively connected to the front and rear opening ends of the case 10 in a cam lock manner. Removably connected via a metal fitting J (known in the art). At the front and rear opening ends of the joint pipe 25, connection male portions Jm of the connection fitting J are provided, respectively, and at the downstream end of the suction side suction hose 22 and the upstream end of the drain side suction hose 23, the connection fitting J Are connected to each other.

  Thus, on the outer surfaces of the left and right side walls of the housing 10 of the drainage control unit U1, there are two systems of connection hoses H each consisting of a plurality of suction hoses 22 ...; Therefore, the drainage control unit U1 can support the four connection hoses H in a well-balanced manner.

  As shown in FIG. 2, the four joint pipes 25 are connected in communication with four normally open electromagnetic on-off valves connected to the suction circuit 21, that is, inlet valves V <b> 1. According to the open / close control of V1 (control signal from the control panel 18), the four joint pipes 25 are communicated with the suction port of the vacuum pump 15, and the communication is cut off. .

  Next, the configuration of the suction unit U2 will be described with reference to FIGS.

  The suction unit U2 is a portable type and is suspended and transported by a suspension cable by an air transportation means such as a helicopter and floated in a reservoir (flooding portion) 2 on the upstream side of the natural dam 1. The suction unit main body 30 is formed in the shape of a rectangular parallelepiped by integrally connecting four sets of the single suction units 30a, and a plurality of (five) floats 31 connected to the suction unit main body 30. Yes. Each inhalation single body 30a is configured by stretching a mesh member (metal mesh) 33 functioning as a filter over the entire outer periphery of a framework 32 made of aluminum alloy. Further, the five floats 31 are respectively attached to the front surface and the left and right side surfaces of the suction portion main body 30, and the suction portion unit U2 floats in a substantially horizontal state on the water storage in the reservoir 2 by the floats 31. Has been. The suction pipes 34 are respectively attached to the four suction single bodies 30a. Each suction pipe 34 is bent in an elbow shape, and its inlet side is inserted into the suction unit 30a, its suction port is opened downward, and its outlet side is the rear surface of the suction unit 30a. It extends toward the rear (intake water flow direction), and its outlet is opened substantially horizontally. The inlet of the suction side suction hose 22 is detachably connected to the connection female portion Jf of the connection fitting J provided at the outlet of the four suction pipes 34 through the connection male portion Jm of the connection fitting J provided there. Is done.

  A water level detection sensor S1 is suspended and connected to the suction portion main body 30 of the suction portion unit U2 via a flexible wire 35. This water level detection sensor S1 is landed on the bottom of the reservoir 2 in which the suction unit U2 is floated so that the water level of the reservoir 2 can be detected, and the detected value is obtained through the signal line through the drainage control unit U1. Are transmitted to the control panel 18. Then, when the water level detection sensor S1 detects a preset water level in the reservoir 1, as will be described later, the suction force is applied to the four connection hoses H, and the four connection hoses H are provided with four suction hoses. The stored water is sucked through the suction pipe 34.

  Thus, since the suction ports of the four suction pipes 34 are surrounded by the mesh member 33 functioning as a filter, foreign matters such as coarse dust and driftwood are not sucked. In addition, the floating suction unit U2 does not suck in sediment at the bottom of the water.

  A suspension tool 36 is provided on the upper surface of the suction section main body 30 to suspend the suction section main body 30 by a suspension cable and transport it in the air by air transportation means such as a helicopter.

  Next, the configuration of the drainage unit U3 will be described with reference to FIGS.

  This drainage unit U3 is portable and is installed in the lowland 3 on the downstream side of the natural dam 1. The drainage unit U3 includes a rectangular parallelepiped water tank 40 made of FRP, and the bottom of the water tank 40 has a height. A plurality of adjustable base jacks 41 are provided, and a suspension tool 42 for hanging the drainage unit U3, hanging with a cable, and transporting in the air by air transportation means such as a helicopter is provided on the upper surface thereof. . Four inlet pipes 43 are fixed to the lower part of the front surface of the water tank 40 in parallel in the left-right direction. The inlet portions of the inlet pipes 43 are extended forward from the front surface of the water tank 40, and there are provided discharge valves V2 made up of electromagnetic butterfly valves for opening and closing the inlet pipes 43, respectively. A connecting female portion Jf of a connection fitting J for connecting the drain side suction hoses 23... Is provided at the inlet. Further, the outlet portion of each inlet pipe 43 is curved upward in an elbow shape, and the outlet thereof opens into the water tank 40. Further, five outlet pipes 44 are fixed in parallel in the left-right direction on the upper rear surface of the water tank 40. The inlet of each outlet pipe 44 is opened in the water tank 40, the outlet is opened to the outside, and the discharge pipe 45 is detachably connected to the outlet via a cam lock type fitting J. A connection female portion Jf of the connection fitting J is provided at the outlet of the outlet pipe 44, and a connection male portion Jm of the connection fitting J is provided at the connection end of the discharge pipe 44. The discharge port of the discharge pipe 45 is open to the outside. Then, the water stored in the water tank 40 is discharged directly into the safe area of the lowland 3 through the outlet pipes 44 and the discharge pipes 45, or is discharged into a water tank (not shown).

  The four connection hoses H are composed of four flexible synthetic resin materials, the suction side suction hose 22 and the drain side suction hose 23, and these suction hoses 22. Also, a plurality of single hoses having a fixed length are connected via the cam lock type connection fitting J. The suction hoses 22 and 23 are appropriately connected with floats so that they can float on the water surface.

  As described above, the four connection hoses H including the suction side suction hoses 22 and the drain side suction hoses 23 are supported in a balanced manner by the four joint pipes 25 of the drainage control unit U1.

  Next, the operation of this embodiment will be described mainly with reference to FIGS.

  (1) The drainage control unit U1 is installed on the top of the natural dam 1, and the suction unit U2 is floated on the water storage in the reservoir 2 upstream of the natural dam 1, and further the natural dam 1 The drainage unit U3 is installed in the lowland 3 on the downstream side.

  At this time, the height difference h (see FIG. 1) between the suction port of the suction pipe 34 of the suction unit U2 and the discharge port of the discharge pipe 45 of the drainage unit U3 is the difference in water level necessary to establish the siphon action. (For example, 4 to 8 m) is secured.

  If the main switch S of the drainage control unit U1 is turned ON directly or remotely, the siphon drainage system according to the present invention automatically enters the sequence operation state.

  When the water level detection sensor S1 of the suction unit U2 measures the water level and detects an arbitrarily set water level, the main switch S of the drainage control unit U1 is automatically turned on by this detection signal. Also good.

  (2) The water level detection signal detected by the water level detection sensor S1 of the suction unit U2 is sent to the control panel 18 of the drainage control unit U1. The normally open type electromagnetic on-off valve, that is, the inlet valve V1,... And the normally open type electromagnetic butterfly valve of the drainage unit U3, that is, the discharge valve V2, are closed.

  (3) After the vacuum pump 15 is operated by the electric power generated by the generator 14, the four inlet valves V1 are opened, and the suction force of the vacuum pump 15 is the suction circuit 21 in the negative pressure state, the joint It acts on the four connection hoses H through the pipes 25 and exerts a suction force on the suction unit U2 floating on the reservoir 2, and the suction of the stored water into the four connection hoses H is started. In addition, the suction circuit 21 is filled with suction water by discharging the remaining air therein.

  At this time, the suction unit U2 is floated by the floats 31 and so on, so that it does not suck in the sediment at the bottom of the water. By being surrounded, foreign objects such as driftwood and coarse dust are not sucked in.

  (4) When the full water detection sensor S2 is turned on by the rise of the water level of the full water detector 16 connected to the suction circuit 21, the ON signal is sent to the control panel 18, and the control signal from the control panel 18 The four inlet valves V1 of the drainage control unit U1 are closed, and the four discharge valves V2 of the drainage unit U3 are opened. As a result, the connection hose H is disconnected from the vacuum pump 15 and the discharge port of the discharge pipe 45 is opened to the outside. The suction water filled in the connection hose H is discharged from the drainage unit U3. The water is discharged from the outlet of the pipe 45 to the outside, and the water stored in the reservoir 2 can be continuously and automatically discharged to the lowland 3 through the connection hose H by the establishment of the siphon action. Then, after the siphon action is established, both the operation generator 14 and the vacuum pump 15 are stopped.

  The siphon state is confirmed with a pressure gauge (not shown) connected to the connection hose H.

  The waste water discharged to the outside from the discharge port of the discharge pipe 44 is discharged directly to a safe area such as a downstream river, or temporarily stored in a water storage tank (not shown) and then transported to another place by another transportation means.

  (5) If the water level in the reservoir 2 decreases due to the continuation of the drainage action and the siphon action is not established, the drainage action automatically stops.

  (6) When the water level of the reservoir 2 rises again due to rain or the like and reaches the set water level, the drainage action can be automatically restarted by the operations (2) to (4).

  Although one embodiment of the present invention has been described above, the present invention is not limited to that embodiment, and various embodiments are possible within the scope of the present invention.

  For example, in the above embodiment, the case where the generator generator 14 is used as the drive source of the drainage control unit U1 has been described, but instead of this, a storage battery and other drive sources that do not need to be refueled are used. May be.

1 ... Natural Dam 2 ... Reservoir 3 ... Lowland 10 ... Casing 12 ... Suspension 14 ...・ Drive source (motor generator)
15 .... Vacuum pump 16 .... Full detector 18 ... Control panel 21 ... Suction circuit 22 ... Suction side suction hose 23 ... …… Drain side suction hose 25 ・ ・ ・ ・ ・ Joint pipe 31 …… Float 33 ・ ・ ・ ・ ・ Filter (mesh member, wire mesh)
36 ······ Hanging tool 42 ······ Hanging device H ·················································· S2 ········· Full water detection sensor U1 ··· Drain control unit U2 ··· Suction unit U3 ··· Drain unit V1 ··· Inlet valve ( Solenoid valve)
V2 ... Discharge valve (electromagnetic butterfly valve)

Claims (5)

A siphon drainage system for draining the water stored in the reservoir (2) upstream of the natural dam (1) to the lowland (3) downstream of the natural dam (1),
A drainage control unit (U1) installed at the top of the natural dam (1), a suction unit (U2) floating on the water surface of the reservoir (2) and capable of detecting the water level, and the lowland (3) The drainage unit (U3) having a discharge valve (V2) installed in the unit and supported by the drainage control unit (U1) to communicate the suction unit (U2) and the drainage unit (U3). It consists of a connecting hose (H),
The drainage control unit (U1) includes a drive source (14), a vacuum pump (15) driven thereby, and a suction circuit (21) communicating the vacuum pump (15) and the connection hose (H). And a full water detector (16) for detecting full water in the suction circuit (21),
When the water level of the suction unit (U2) is detected, the drive source (14) is activated to operate the vacuum pump (15), and the inlet valve (V1) of the vacuum pump (15) and the drain unit ( The discharge valve (V2) of U3) is closed, and then the intake of the reservoir (2) is started by opening the inlet valve (V1), and the full water detection of the full water detector (16) After closing the inlet valve (V1) and opening the discharge valve (V2) to establish the siphon action, the operation of the drive source (14) is stopped and the water stored in the reservoir (2) is sucked into the suction valve. The siphon drainage system is characterized in that water is continuously drained through the unit (U2), the connection hose (H), and the drainage unit (U3).   The drainage control unit (U1) includes a control panel (18) for controlling the operation of the drive source (14), the vacuum pump (15), the full water detector (16), the suction circuit (21), and various devices. And a joint pipe (25) is provided on the outer side surface of the casing (10), and the connection hose (H) is supported by the joint pipe (25). The siphon drainage system according to claim 1, wherein   The joint pipe (25) includes a plurality of joint pipes (H) for supporting a plurality of connection hoses (H), and the joint pipes (25) are symmetrical to the outer surfaces of the left and right side walls of the housing (10). The siphon drainage system according to claim 2, wherein the siphon drainage system is provided.   The drainage control unit (U1), the suction unit (U2), and the drainage unit (U3) are all portable, and are suspended from the upper surface by air transportation means (12) 36; 42). The siphon drainage system according to claim 1, wherein the siphon drainage system is provided.   The suction unit (U2) is floated on the water storage surface of the reservoir (2) by a float (31), and the suction port is surrounded by a filter (33) made of a mesh member. The siphon drainage system according to claim 1 or 4.

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